diff --git a/CONTRIBUTORS b/CONTRIBUTORS deleted file mode 100644 index d83c839..0000000 --- a/CONTRIBUTORS +++ /dev/null @@ -1,133 +0,0 @@ -$MirOS$ -$OpenBSD: CONTRIBUTORS,v 1.9 1999/07/14 13:37:23 millert Exp $ - -This is a partial history of this shell gleened from old change logs and -readmes and source code. -Hopefully it is correct and no contributors have been left out -(file a bug report if you spot a problem :-)). - -Release history: - * Eric Gisin (egisin@math.uwaterloo.ca), created pdksh, using - Charles Forsyth's public domain V7 shell as a base; also used parts - of the BRL shell (written by Doug A Gwyn, Doug Kingston, Ron Natalie, - Arnold Robbins, Lou Salkind, and others?, circa '87; the parts used in - pdksh included getopts, test builtin, ulimit, tty setting/getting, emacs - editing, and job control; the test builtin was based on code by Erik - Baalbergen). - '87..'89 ? - Released versions: .. 3.2 - * John R MacMillan (@yonge.csri.toronto.edu:chance!john@sq.sq.com) - takes over as maintainer - dates? - Released versions: 3.3 (?) - * Simon J. Gerraty (sjg@zen.void.oz.au) takes over as maintainer - Nov '91..July '94 ? - Released versions: 4.0 .. 4.9 - * Michael Rendell (michael@cs.mun.ca) takes over as maintainer - July, 1994 - Released versions: 5.0 .. 5.2 - * Thorsten Glaser (tg@66h.42h.de) releases mksh and is the guy - to blame for all mirbsdksh-specific or MirOS-specific bugs. - Released versions: 5.2.14 MirOS 1.1-1.x - -Major contributions: - * John R MacMillan (@yonge.csri.toronto.edu:chance!john@sq.sq.com), ?: - cleaned up configuration, many bug fixes (see misc/Changes.jrm). - * Simon Gerraty, (sjg@zen.void.oz.au), Nov '91..?: much improved emacs mode - ala at&t ksh, 386bsd port, sigaction routines for non-POSIX systems - (see misc/ChangeLog.sjg and misc/ReadME.sjg). - * Peter Collinson (pc@hillside.co.uk), July '92: added select, at&t ksh - style history file, original csh-style {} globbing, BSD/386 port, - misc bug fixes. - * Larry Bouzane (larry@compusult.nf.ca), Mar '89..'93: re-wrote job control, - added async job notification, added CDPATH and other cd fixes, misc bug - fixes. - * John Rochester (jr@cs.mun.ca), '87: wrote vi command line editor; various - bug fixes/enhancements. - * Jeff Sparkes (jsparkes@bnr.ca), Mar '89..Mar '90: added arrays, - merged John Rochester's vi code into pdksh, misc bug fixes. - * Michael Haardt (u31b3hs@POOL.Informatik.RWTH-Aachen.DE), Sept '94: - organized man page, filled in many of its copious blank spots; added - KSH ifdefs. - * Dale DePriest (daled@cadence.com): ported to OS/2 (initially based on - port of pdksh4.9 to OS/2 by Kai Rommel (rommel@ars.muc.de)); maintains - OS/2 port; misc bug fixes. - -Other contributors: - * Piercarlo Grandi (pcg@aber.ac.uk), Dec '93: fixes for linux port - * Neil Smithline (Neil.Smithline@eng.sun.com), Aug '92: emacs-style - filename completion. - * Mike Jetzer [mlj] (jetzer@studsys.mscs.mu.edu), ?;Nov '94: fixes for vi - mode (see misc/Changes.mlj), added v to vi, fixes for history; fixed - command redoing in vi; fixes to vi globbing. - * Robert J Gibson: mailbox checking code that was adapted for pdksh by - John R. MacMillan. - * ? (guy@demon.co.uk), ?: promptlen() function. - * J.T. Conklin (jtc@cygnus.com): POSIXized test builtin; miscellaneous - fixes/enhancements. - * Sean Hogan (sean@neweast.ca): fixes for ICS 3.0 Unix, found and helped - fix numerous problems. - * Gordan Larson (hoh@approve.se): fix to compile sans VI, ksh.1 typo. - * Thomas Gellekum (thomas@ghpc8.ihf.rwth-aachen.de): fixes for Makefile - typos, fixed CLK_TCK for FreeBSD, man page fixes. - * Ed Ferguson (Ed.Ferguson@dseg.ti.com): fix to compile sans VI. - * Brian Campbell (brianc@qnx.com): fixes to compile under QNX and - to compile with dmake. - * (guy@netapp.com), Oct '94: patch to use gmacs flag. - * Andrew Moore (alm@netcom.com): reported many bugs, fixes. - * William Bader (wbader@CSEE.Lehigh.Edu): fix to compile on SCO Unix - (strut winsize). - * Mike Long (mike.long@analog.com): makefile fix - use $manext, not 1. - * Art Mills (aem@hpbs9162.bio.hp.com): bug fix for vi file completion in - command mode. - * Tory Bollinger (tboll@authstin.ibm.com): allow ~ in vi mode to take - a count. - * Frank Edwards (): added macros to vi (@char). - * Fritz Heinrichmeyer (): fixes - to allow compile under Linux 1.4.3. - * Gabor Zahemszky (): SVR3_PGRP vs SYSV_PGRP, many - bug reports and man page fixes. - * Dave Kinchlea (): DEFAULT_ENV patches. - * Paul Borman (): j_exit: send HUP, then CONT; HUP fg process. - * DaviD W. Sanderson (): patches to allow { .. } instead - of in .. esac in case statements. - * ? (): partial patches to handle SIGWINCH for command line - editing. - * Jason Tyler (): fixes for bugs in fc. - * Stefan Dalibor (): fix for - COLUMNS never being set in x_init(). - * Arnon Kanfi (): fix for prompt. - * Marc Olzheim (): patches to ifdef KSH the mail check - code and aliases; enum patches for old K&R compilers; handle missing dup2. - * Lars Hecking (): fixes so shell compiles as sh - again. - * Bill Kish (): added prompt delimiter hack for - hidden characters (eg, escape codes). - * Andrew S. Townley (): fixes for NeXT machines: - get a controlling if one needed, use correct profile. - * Eric J. Chet (): fix for core dump in . (quitenv() called - too soon). - * Greg A. Woods : fix to make ^[_ in emacs work - as in at&t ksh. - * George Robbins : fix for sh mode to - keep exec'd file descriptors open. - * George White : fix here-doc problem under OS/2 - (memory allocated incorrectly). - * David E. Wexelblat : fix to avoid memory overrun - in aresize(); fix to not print un-named options. - * Clifford Wolf (): fix memory overrun in aresize(); - fixed sys_siglist[] problem. - * Theo de Raadt (): allow ". /dev/null". - * Eric Youngdale (): flag field incorrectly changed - in exec.c(flushcom). - * Todd. C Miller (Todd C. Miller ): fix - for coredump in jobs. - * Kevin Schoedel : fix for word location in file - completion. - * Martin Lucina : fix for argument parsing in exit command, - fix for KSH_CHECK_H_TYPE. - * Mark Funkenhauser : added $LINENO support. - * Corinna Vinschen and Steven Hein : - port to cyngin environment on win95/winnt. - * Martin Dalecki : changes for 8 bit emacs mode. - * Dave Hillman : patch for bug in test -nt. diff --git a/Makefile b/Makefile deleted file mode 100644 index fde5f7d..0000000 --- a/Makefile +++ /dev/null @@ -1,27 +0,0 @@ -# $MirOS: src/bin/ksh/Makefile,v 1.4 2005/08/29 20:54:39 tg Exp $ -# $OpenBSD: Makefile,v 1.18 2004/02/16 19:07:19 deraadt Exp $ - -PROG= ksh -SRCS= alloc.c c_ksh.c c_sh.c c_test.c c_ulimit.c edit.c emacs.c eval.c \ - exec.c expr.c history.c io.c jobs.c lex.c main.c misc.c missing.c \ - path.c shf.c syn.c table.c trap.c tree.c tty.c var.c vi.c -MAN= ksh.1 - -.include -COPTS+= -Wall -Wextra -pedantic -CPPFLAGS+= -DHAVE_CONFIG_H -I. -DMIRBSD_NATIVE -CLEANFILES+= emacs.out - -LINKS= ${BINDIR}/ksh ${BINDIR}/rksh -MLINKS= ksh.1 rksh.1 - -beforedepend: emacs.out - -emacs.out: emacs.c - ${SHELL} ${.CURDIR}/emacs-gen.sh ${.CURDIR}/emacs.c >emacs.out - -check: - /usr/bin/perl ${.CURDIR}/tests/th -s ${.CURDIR}/tests \ - -p ./ksh -C pdksh,sh,ksh,posix,posix-upu - -.include diff --git a/NOTES b/NOTES deleted file mode 100644 index db18e2e..0000000 --- a/NOTES +++ /dev/null @@ -1,305 +0,0 @@ -$MirOS: src/bin/ksh/NOTES,v 1.1.7.1 2005/03/06 15:42:53 tg Exp $ -$OpenBSD: NOTES,v 1.9 2003/10/26 15:07:25 jmc Exp $ - - -* http://www.research.att.com/~gsf/public/ifs.sh - # tests 6856 passed 5192 failed 1664 - - -General features of at&t ksh88 that are not (yet) in pdksh: - - exported aliases and functions (not in ksh93). - - set -t. - - signals/traps not cleared during functions. - - trap DEBUG, local ERR and EXIT traps in functions. - - ERRNO parameter. - - doesn't have posix file globbing (eg, [[:alpha:]], etc.). - - use of an 'agent' to execute unreadable/setuid/setgid shell scripts - (don't ask). - - read/select aren't hooked in to the command line editor - - the last command of a pipeline is not run in the parent shell - - MAIL, MAILPATH, MAILCHECK have been removed in mirbsdksh. - -Known bugs (see also BUG-REPORTS and PROJECTS files): - Variable parsing, Expansion: - - some specials behave differently when unset (eg, IFS behaves like - " \t\n") others lose their special meaning. IFS/PATH taken care of, - still need to sort out some others (eg, TMOUT). - Parsing,Lexing: - - line numbers in errors are wrong for nested constructs. Need to - keep track of the line a command started on (can use for LINENO - parameter as well). - - a $(..) expression nested inside double quotes inside another $(..) - isn't parsed correctly (eg, $(echo "foo$(echo ")")") ) - Commands,Execution: - - setting special parameters that have side effects when - changed/restored (ie, HISTFILE, OPTIND, RANDOM) in front - of a command (eg, HISTFILE=/foo/bar echo hi) effects the parent - shell. Note that setting other (not so special) parameters - does not effect the parent shell. - - 'echo hi | exec cat -n' causes at&t to exit, 'exec echo hi | cat -n' - does not. pdksh exits for neither. Don't think POSIX requires - an exit, but not sure. - - 'echo foo | read bar; echo $bar' prints foo in at&t ksh, nothing - in pdksh (ie, the read is done in a separate process in pdksh). - Misc: - -Known problems not caused by ksh: - - after stoping a job, emacs/vi is not re-entered. Hitting return - prints the prompt and everything is fine again. Problem (often - involving a pager like less) is related to order of process - scheduling (shell runs before 'stop'ed (sub) processes have had a chance - to clean up the screen/terminal). - -Known differences between pdksh & at&t ksh (that may change) - - vi: - - '^U': at&t: kills only what has been inserted, pdksh: kills to - start of line - - at&t ksh login shells say "Warning: you have running jobs" if you - try to exit when there are running jobs. An immediate second attempt - to exit will kill the jobs and exit. pdksh does not print a warning, - nor does it kill running jobs when it exits (it does warn/kill for - stopped jobs). - - TMOUT: at&t prints warning, then waits another 60 seconds. If on screwed - up serial line, the output could cause more input, so pdksh just - prints a message and exits. (Also, in at&t ksh, setting TMOUT has no - effect after the sequence "TMOUT=60; unset TMOUT", which could be - useful - pdksh may do this in the future). - - in pdksh, if the last command of a pipeline is a shell builtin, it is - not executed in the parent shell, so "echo a b | read foo bar" does not - set foo and bar in the parent shell (at&t ksh will). - This may get fixed in the future, but it may take a while. - - in pdksh, set +o lists the options that are currently set, in at&t ksh - it is the same as set -o. - - in pdksh emacs mode, ^T does what gnu emacs does, not what at&t ksh - does. - - in ksh93, '. name' calls a function (defined with function) with POSIX - semantics (instead of ksh semantics). in pdksh, . does not call - functions. - - test: "test -f foo bar blah" is the same as "test -f foo" (the extra - arguments, of which there must be at least 2, are ignored) - pdksh - generates an error message (unexpected operator/operand "bar") as it - should. Sometimes used to test file globs (e.g., if test -f *.o; ...). - - if the command 'sleep 5 && /bin/echo blah' is run interactively and - is the sleep is stopped (^Z), the echo is run immediately in pdksh. - In at&t ksh, the whole thing is stopped. - - LINENO: - - in ksh88 variable is always 1 (can't be changed) in interac mode; - in pdksh it changes. - - Value of LINENO after it has been set by the script in one file - is bizarre when used in another file. - -Known differences between pdksh & at&t ksh (that are not likely to change) - - at&t ksh seems to catch or ignore SIGALRM - pdksh dies upon receipt - (unless it's traped of course) - - typeset: - - at&t ksh overloads -u/-l options: for integers, means unsigned/long, - for strings means uppercase/lowercase; pdksh just has the - upper/lower case (which can be useful for integers when base > 10). - unsigned/long really should have their own options. - - at&t ksh can't have justified integer variables - (eg, typeset -iR5 j=10), pdksh can. - - in pdksh, number arguments for -L/-R/-Z/-i must follow the option - character, at&t allows it at the end of the option group (eg, - at&t ksh likes "typeset -iu5 j", pdksh wants "typeset -i5 -u j" - or "typeset -ui5 j"). Also, pdksh allows "typeset -i 5 j" (same - as "typeset -i5 j"), at&t ksh does not allow this. - - typeset -R: pdksh strips trailing space type characters (ie, - uses isspace()), at&t ksh only skips blanks. - - at&t ksh allows attributes of read-only variables to be changed, - pdksh allows only the export attribute to be set. - - (some) at&t ksh allows set -A of readonly variables, pdksh does not. - - at&t ksh allows command assignments of readonly variables (eg, YY=2 cat), - pdksh does not. - - at&t ksh does not exit scripts when an implicit assignment to an integer - variable fails due to an expression error: eg, - echo 2+ > /tmp/x - unset x; typeset -i x - read x < /tmp/x - echo still here - prints an error and then prints "still here", similarly for - unset x; typeset -i x - set +A x 1 2+ 3 - echo still here - and - unset x y; typeset -i x y; set +A y 10 20 30 - set +A x 1 1+y[2+] 3 - echo still here - pdksh exits a script in all the above cases. (note that both shells - exit for: - unset x; typeset -i x - for x in 1 2+ 3; do echo x=$x; done - echo still here - ). - - at&t ksh seems to allow function calls inside expressions - (eg, typeset -i x='y(2)') but they do not seem to be regular functions - nor math functions (eg, pow, exp) - anyone known anything about this? - - 'set -o nounset; unset foo; echo ${#foo}': at&t ksh prints 0; pdksh - generates error. Same for ${#foo[*]} and ${#foo[@]}. - - . file: at&t ksh parses the whole file before executing anything, - pdksh executes as it parses. This means aliases defined in the file - will affect how pdksh parses the file, but won't affect how at&t ksh - parses the file. Also means pdksh will not parse statements occurring - after a (executed) return statement. - - a return in $ENV in at&t ksh will cause the shell to exit, while in - pdksh it will stop executing the script (this is consistent with - what a return in .profile does in both shells). - - at&t ksh does file globbing for 'echo "${foo:-"*"}"', pdksh does not - (POSIX would seem to indicate pdksh is right). - - at&t ksh thinks ${a:##foo} is ok, pdksh doesn't. - - at&t does tilde expansion on here-document delimiters, pdksh does - not. eg. - $ cat << ~michael - ~michael - $ - works for pdksh, not for at&t ksh (POSIX seems to agree with pdksh). - - in at&t ksh, tracked aliases have the export flag implicitly set - and tracked aliases and normal aliases live in the same name space - (eg, "alias" will list both tracked and normal aliases). - in pdksh, -t does not imply -x (since -x doesn't do anything yet), and - tracked/normal aliases live in separate name spaces. - in at&t ksh, alias accepts + options (eg, +x, +t) - pdksh does not. - in pdksh, alias has a -d option to allow examination/changing of - cached ~ entries, also unalias has -d and -t options (unalias -d - is useful if the ~ cache gets out of date - not sure how at&t deals - with this problem (it does cache ~ entries)). - - at&t ksh will stop a recursive function after about 60 calls; pdksh - will not since the limit is arbitrary and can't be controlled - by the user (hit ^C if you get in trouble). - - the wait command (with and without arguments) in at&t ksh will wait for - stopped jobs when job control is enabled. pdksh doesn't. - - at&t ksh automatically sets the bgnice option for interactive shells; - pdksh does not. - - in at&t ksh, "eval $(false); echo $?" prints 1, pdksh prints 0 (which - is what POSIX says it should). Same goes for "wait $(false); echo $?". - (same goes for "set $(false); echo $?" if posix option is set - some - scripts that use the old getopt depend on this, so be careful about - setting the posix option). - - in at&t ksh, print -uX and read -uX are interrperted as -u with no - argument (defaults to 1 and 0 respectively) and -X (which may or - may not be a valid flag). In pdksh, -uX is interpreted as file - descriptor X. - - in at&t ksh, some signals (HUP, INT, QUIT) cause the read to exit, others - (ie, everything else) do not. When it does cause exiting, anything read - to that point is used (usually an empty line) and read returns with 0 - status. pdksh currently does similar things, but for TERM as well and - the exit status is 128+ - in future, pdksh's read will - do this for all signals that are normally fatal as required by POSIX. - (POSIX does not require the setting of variables to null so applications - shouldn't rely on this). - - in pdksh, ! substitution done before variable substitution; in at&t ksh - it is done after substitution (and therefor may do ! substitutions on - the result of variable substitutions). POSIX doesn't say which is to be - done. - - pwd: in at&t ksh, it ignores arguments; in pdksh, it complains when given - arguments. - - the at&t ksh does not do command substition on PS1, pdksh does. - - ksh93 allows ". foo" to run the function foo if there is no file - called foo (go figure). - - field splitting (IFS): ksh88/ksh93 strip leading non-white space IFS - chars, pdksh (and POSIX, I think) leave them intact. e.g. - $ IFS="$IFS:"; read x; echo "<$x>" - :: - prints "<>" in at&t ksh, "<::>" in pdksh. - - command completion: at&t ksh will do completion on a blank line (matching - all commands), pdksh does not (as this isn't very useful - use * if - you really want the list). - - co-processes: if ksh93, the write portion of the co-process output is - closed when the most recently started co-process exits. pdksh closes - it when all the co-processes using it have exited. - - pdksh accepts empty command lists for while and for statements, while - at&t ksh (and sh) don't. Eg., pdksh likes - while false ; do done - but ksh88 doesn't like it. - - pdksh bumps RANDOM in parent after a fork, at&t ksh bumps it in both - parent and child: - RANDOM=1 - echo child: $(echo $RANDOM) - echo parent: $RANDOM - will produce "child: 16838 parent: 5758" in pdksh, while at&t ksh - will produce "child: 5758 parent: 5758". - -Oddities in ksh (pd & at&t): - - array references inside (())/$(()) are strange: - $(( x[2] )) does the expected, $(( $x[2] )) doesn't. - - 'typeset -R3 X='x '; echo "($X)"' produces ( x) - trailing - spaces are stripped. - - typeset -R turns off Z flag. - - both shells have the following mis-feature: - $ x='function xx { - cat -n <<- EOF - here we are in xx - EOF - }' - $ (eval "$x"; (sleep 2; xx) & echo bye) - [1] 1234 - bye - $ xx: /tmp/sh1234.1: cannot open - - bizarre special handling of alias/export/readonly/typeset arguments - $ touch a=a; typeset a=[ab]; echo "$a" - a=[ab] - $ x=typeset; $x a=[ab]; echo "$a" - a=a - $ - - both ignore SIGTSTP,SIGTTIN,SIGTTOU in exec'd processes when talking - and not monitoring (at&t ksh kind of does this). Doesn't really make - sense. - (Note that ksh.att -ic 'set +m; check-sigs' shows TSTP et al aren't - ignored, while ksh.att -ic 'set +m^J check-sigs' does... very strange) - - when tracing (set -x), and a command's stderr is redirected, the trace - output is also redirected. so "set -x; echo foo 2> /tmp/O > /dev/null" - will create /tmp/foo with the lines "+ > /dev/null" and "+ echo foo". - - undocumented at&t ksh feature: FPATH is searched after PATH if no - executable is found, even if typeset -uf wasn't used. - -[...] - -POSIX sh questions (references are to POSIX 1003.2-1992) - - arithmetic expressions: how are empty expressions treated? - (eg, echo $(( ))). at&t ksh (and now pdksh) echo 0. - Same question goes for 'test "" -eq 0' - does this generate an error - or, if not, what is the exit code? - - should tilde expansion occur after :'s in the word part of ${..=..}? - (me thinks it should) - - if a signal is received during the execution of a built-in, - does the builtin command exit or the whole shell? - - is it legal to execute last command of pipeline in current - execution environment (eg, can "echo foo | read bar" set - bar?) - - what action should be taken if there is an error doing a dup due - to system limits (eg, not enough feil destriptors): is this - a "redirection error" (in which case a script will exit iff the - error occured while executing a special built-in)? - IMHO, shell should exit script. Couldn't find a blanket statement - like "if shell encounters an unexpected system error, it shall - exit non-interactive scripts"... - -POSIX sh bugs (references are to POSIX 1003.2-1992) - - in vi insert mode, ^W deletes to beginning of line or to the first - blank/punct character (para at line 9124, section 3). This means - "foo ^W" will do nothing. This is inconsistent with the vi - spec, which says delete preceding word including and interceding - blanks (para at line 5189, section 5). - - parameter expansion, section 3.6.2, line 391: 'in each case that a - value of word is needed (..), word shall be subjected to tilde - expansion, parameter expansion, ...'. Various expansions should not - be performed if parameter is in double quotes. - - the getopts description says assigning OPTIND a value other than 1 - produces undefined results, while the rationale for getopts suggests - saving/restoring the OPTIND value inside functions (since POSIX - functions don't do the save/restore automatically). Restoring - OPTIND is kind of dumb since getopts may have been in the middle - of parsing a group of flags (eg, -abc). - - unclear whether arithmetic expressions (eg, $((..))) should - understand C integer constants (ie, 0x123, 0177). at&t ksh doesn't - and neither does pdksh. - - `...` definition (3.6.3) says nothing about backslash followed by - a newline, which sh and at&t ksh strip out completely. e.g., - $ show-args `echo 'X - Y'` - Number of args: 1 - 1: - $ - POSIX would indicate the backslash-newline would be preserved. - - does not say how "cat << ''" is to be treated (illegal, read 'til - blank line, or read 'til eof). at&t ksh reads til eof, bourne shell - reads 'til blank line. pdksh reads 'til blank line. diff --git a/README b/README deleted file mode 100644 index 43c350f..0000000 --- a/README +++ /dev/null @@ -1,78 +0,0 @@ -$MirOS$ - -This is the README for mirbsdksh, developed as part of the MirBSD -operating system at The MirOS Project, and produced portably. -Legal information is provided about a screenpage farther down. - -To build mksh on MirOS, issue 'make obj && make depend && make'. - -To build mksh on other operating systems, read Builsd.sh first -or consult http://wiki.mirbsd.de/MirbsdKsh for further infos. - -Set the CC, CFLAGS, CPPFLAGS and LDFLAGS environment variables -to your likes. Don't complain if anything doesn't work. - - -LEGAL INFORMATION - -This package as a whole is placed under the MirOS licence template -as contained in the "Build.sh" source file in this distribution, -by having the project leader asserting a collective copyright. - -The file alloc.c by Marc Espie is provided under a 2-clause BSD licence. - -All files from the original pdksh distribution which were not public -domain have been removed from the source tree, with the exception of -aclocal.m4, from which only the functions which required the file to -be under the GNU GPL have been removed. - - -The information below is mostly unmaintained. -________________________________________________________________________ - -$OpenBSD: README,v 1.10 2003/03/10 03:48:16 david Exp $ - -Last updated Jul '99 for pdksh-5.2.14. - (check ftp://ftp.cs.mun.ca:/pub/pdksh/ or - http://www.cs.mun.ca/~michael/pdksh/ for new versions/patches) - -PD-ksh is a mostly complete AT&T ksh look-alike (see NOTES file for a list -of things not supported). Work is mostly finished to make it fully -compatible with both POSIX and AT&T ksh (when the two don't conflict). - -Since pdksh is free and compiles and runs on most common unix systems, it -is very useful in creating a consistent user interface across multiple -machines. For example, in the CS dept. of MUN, pdksh is installed on a -variety of machines including Suns, HPs, DecStations, pcs running Linux, -etc., and is the login shell of ~5200 users. - -If you would like to be notified via email of new releases as they become -available, send mail to pdksh-request@cs.mun.ca with subject -"send release notifications" (or "don't send release notifications" to stop -them). - -Newer versions of pdksh may be available from - ftp://ftp.cs.mun.ca:/pub/pdksh/ -[...] - -You can send bug reports, fixes, and enhancements to pdksh@cs.mun.ca (please -don't assume I will see bug reports that are posted to some newsgroup or -mailing list - I probably won't). -If you are reporting a bug (with or without a fix), please include - * the version of pdksh you are using (see version.c, or, if you are - running pdksh, try echo $KSH_VERSION), - * the machine, operating system and compiler you are using, - * and a description of how to repeat the bug (a small shell - script that demonstrates the bug is best). -as well as the following, if relevant (if you aren't sure, include them) - * what options you are using (both configure options and set -o options) - * the output of configure, with the verbose flag - (eg, make distclean; ./configure --verbose) - * the contents of config.log (this is created by the configure script) - * if you are using gcc (the GNU C compiler), which version it is. - -BTW, THE MOST FREQUENTLY REPORTED BUG IS - echo hi | read a; echo $a # Does not print hi -I'm aware of this and there is no need to report it. - -Michael Rendell, michael@cs.mun.ca diff --git a/alloc.c b/alloc.c deleted file mode 100644 index f349393..0000000 --- a/alloc.c +++ /dev/null @@ -1,122 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: alloc.c,v 1.7 2004/02/19 18:51:17 deraadt Exp $ */ - -/* - * Copyright (c) 2002 Marc Espie. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD - * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * area-based allocation built on malloc/free - */ - -#include "sh.h" - -struct link { - struct link *prev; - struct link *next; -}; - -Area * -ainit(Area *ap) -{ - ap->freelist = NULL; - return ap; -} - -void -afreeall(Area *ap) -{ - struct link *l, *l2; - - for (l = ap->freelist; l != NULL; l = l2) { - l2 = l->next; - free(l); - } - ap->freelist = NULL; -} - -#define L2P(l) ( (void *)(((char *)(l)) + sizeof(struct link)) ) -#define P2L(p) ( (struct link *)(((char *)(p)) - sizeof(struct link)) ) - -void * -alloc(size_t size, Area *ap) -{ - struct link *l; - - l = malloc(sizeof(struct link) + size); - if (l == NULL) - internal_errorf(1, "unable to allocate memory"); - l->next = ap->freelist; - l->prev = NULL; - if (ap->freelist) - ap->freelist->prev = l; - ap->freelist = l; - - return L2P(l); -} - -void * -aresize(void *ptr, size_t size, Area *ap) -{ - struct link *l, *l2, *lprev, *lnext; - - if (ptr == NULL) - return alloc(size, ap); - - l = P2L(ptr); - lprev = l->prev; - lnext = l->next; - - l2 = realloc(l, sizeof(struct link) + size); - if (l2 == NULL) - internal_errorf(1, "unable to allocate memory"); - if (lprev) - lprev->next = l2; - else - ap->freelist = l2; - if (lnext) - lnext->prev = l2; - - return L2P(l2); -} - -void -afree(void *ptr, Area *ap) -{ - struct link *l; - - if (!ptr) - return; - - l = P2L(ptr); - - if (l->prev) - l->prev->next = l->next; - else - ap->freelist = l->next; - if (l->next) - l->next->prev = l->prev; - - free(l); -} diff --git a/c_ksh.c b/c_ksh.c deleted file mode 100644 index a4d084e..0000000 --- a/c_ksh.c +++ /dev/null @@ -1,1406 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: c_ksh.c,v 1.18 2004/02/10 13:03:36 jmc Exp $ */ - -/* - * built-in Korn commands: c_* - */ - -#include "sh.h" -#include "ksh_stat.h" -#include - -#ifdef __CYGWIN__ -#include -#endif /* __CYGWIN__ */ - -__RCSID("$MirOS$"); - -int -c_cd(char **wp) -{ - int optc; - int physical = Flag(FPHYSICAL); - int cdnode; /* was a node from cdpath added in? */ - int printpath = 0; /* print where we cd'd? */ - int rval; - struct tbl *pwd_s, *oldpwd_s; - XString xs; - char *xp; - char *dir, *try, *pwd; - int phys_path; - char *cdpath; - - while ((optc = ksh_getopt(wp, &builtin_opt, "LP")) != EOF) - switch (optc) { - case 'L': - physical = 0; - break; - case 'P': - physical = 1; - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - - if (Flag(FRESTRICTED)) { - bi_errorf("restricted shell - can't cd"); - return 1; - } - - pwd_s = global("PWD"); - oldpwd_s = global("OLDPWD"); - - if (!wp[0]) { - /* No arguments - go home */ - if ((dir = str_val(global("HOME"))) == null) { - bi_errorf("no home directory (HOME not set)"); - return 1; - } - } else if (!wp[1]) { - /* One argument: - or dir */ - dir = wp[0]; - if (strcmp(dir, "-") == 0) { - dir = str_val(oldpwd_s); - if (dir == null) { - bi_errorf("no OLDPWD"); - return 1; - } - printpath++; - } - } else if (!wp[2]) { - /* Two arguments - substitute arg1 in PWD for arg2 */ - int ilen, olen, nlen, elen; - char *cp; - - if (!current_wd[0]) { - bi_errorf("don't know current directory"); - return 1; - } - /* substitute arg1 for arg2 in current path. - * if the first substitution fails because the cd fails - * we could try to find another substitution. For now - * we don't - */ - if ((cp = strstr(current_wd, wp[0])) == NULL) { - bi_errorf("bad substitution"); - return 1; - } - ilen = cp - current_wd; - olen = strlen(wp[0]); - nlen = strlen(wp[1]); - elen = strlen(current_wd + ilen + olen) + 1; - dir = alloc(ilen + nlen + elen, ATEMP); - memcpy(dir, current_wd, ilen); - memcpy(dir + ilen, wp[1], nlen); - memcpy(dir + ilen + nlen, current_wd + ilen + olen, elen); - printpath++; - } else { - bi_errorf("too many arguments"); - return 1; - } - - Xinit(xs, xp, PATH_MAX, ATEMP); - /* xp will have a bogus value after make_path() - set it to 0 - * so that if it's used, it will cause a dump - */ - xp = NULL; - - cdpath = str_val(global("CDPATH")); - do { - cdnode = make_path(current_wd, dir, &cdpath, &xs, &phys_path); -#ifdef S_ISLNK - if (physical) - rval = chdir(try = Xstring(xs, xp) + phys_path); - else -#endif /* S_ISLNK */ - { - simplify_path(Xstring(xs, xp)); - rval = chdir(try = Xstring(xs, xp)); - } - } while (rval < 0 && cdpath != NULL); - - if (rval < 0) { - if (cdnode) - bi_errorf("%s: bad directory", dir); - else - bi_errorf("%s - %s", try, strerror(errno)); - return 1; - } - - /* Clear out tracked aliases with relative paths */ - flushcom(0); - - /* Set OLDPWD (note: unsetting OLDPWD does not disable this - * setting in at&t ksh) - */ - if (current_wd[0]) - /* Ignore failure (happens if readonly or integer) */ - setstr(oldpwd_s, current_wd, KSH_RETURN_ERROR); - - if (!ISABSPATH(Xstring(xs, xp))) { - pwd = NULL; - } else -#ifdef S_ISLNK - if (!physical || !(pwd = get_phys_path(Xstring(xs, xp)))) -#endif /* S_ISLNK */ - pwd = Xstring(xs, xp); - - /* Set PWD */ - if (pwd) { -#ifdef __CYGWIN__ - char ptmp[PATH_MAX]; /* larger than MAX_PATH */ - cygwin_conv_to_full_posix_path(pwd, ptmp); -#else /* __CYGWIN__ */ - char *ptmp = pwd; -#endif /* __CYGWIN__ */ - set_current_wd(ptmp); - /* Ignore failure (happens if readonly or integer) */ - setstr(pwd_s, ptmp, KSH_RETURN_ERROR); - } else { - set_current_wd(null); - pwd = Xstring(xs, xp); - /* XXX unset $PWD? */ - } - if (printpath || cdnode) - shprintf("%s\n", pwd); - - return 0; -} - -int -c_pwd(char **wp) -{ - int optc; - int physical = Flag(FPHYSICAL); - char *p; - - while ((optc = ksh_getopt(wp, &builtin_opt, "LP")) != EOF) - switch (optc) { - case 'L': - physical = 0; - break; - case 'P': - physical = 1; - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - - if (wp[0]) { - bi_errorf("too many arguments"); - return 1; - } -#ifdef S_ISLNK - p = current_wd[0] ? (physical ? get_phys_path(current_wd) : current_wd) - : NULL; -#else /* S_ISLNK */ - p = current_wd[0] ? current_wd : NULL; -#endif /* S_ISLNK */ - if (p && eaccess(p, R_OK) < 0) - p = NULL; - if (!p) { - p = ksh_get_wd(NULL, 0); - if (!p) { - bi_errorf("can't get current directory - %s", - strerror(errno)); - return 1; - } - } - shprintf("%s\n", p); - return 0; -} - -int -c_print(char **wp) -{ -#define PO_NL BIT(0) /* print newline */ -#define PO_EXPAND BIT(1) /* expand backslash sequences */ -#define PO_PMINUSMINUS BIT(2) /* print a -- argument */ -#define PO_HIST BIT(3) /* print to history instead of stdout */ -#define PO_COPROC BIT(4) /* printing to coprocess: block SIGPIPE */ - int fd = 1; - int flags = PO_EXPAND|PO_NL; - char *s; - const char *emsg; - XString xs; - char *xp; - - if (wp[0][0] == 'e') { /* echo command */ - int nflags = flags; - - /* A compromise between sysV and BSD echo commands: - * escape sequences are enabled by default, and - * -n, -e and -E are recognized if they appear - * in arguments with no illegal options (ie, echo -nq - * will print -nq). - * Different from sysV echo since options are recognized, - * different from BSD echo since escape sequences are enabled - * by default. - */ - wp += 1; - while ((s = *wp) && *s == '-' && s[1]) { - while (*++s) - if (*s == 'n') - nflags &= ~PO_NL; - else if (*s == 'e') - nflags |= PO_EXPAND; - else if (*s == 'E') - nflags &= ~PO_EXPAND; - else - /* bad option: don't use nflags, print - * argument - */ - break; - if (*s) - break; - wp++; - flags = nflags; - } - } else { - int optc; - const char *options = "Rnprsu,"; - while ((optc = ksh_getopt(wp, &builtin_opt, options)) != EOF) - switch (optc) { - case 'R': /* fake BSD echo command */ - flags |= PO_PMINUSMINUS; - flags &= ~PO_EXPAND; - options = "ne"; - break; - case 'e': - flags |= PO_EXPAND; - break; - case 'n': - flags &= ~PO_NL; - break; - case 'p': - if ((fd = coproc_getfd(W_OK, &emsg)) < 0) { - bi_errorf("-p: %s", emsg); - return 1; - } - break; - case 'r': - flags &= ~PO_EXPAND; - break; - case 's': - flags |= PO_HIST; - break; - case 'u': - if (!*(s = builtin_opt.optarg)) - fd = 0; - else if ((fd = check_fd(s, W_OK, &emsg)) < 0) { - bi_errorf("-u: %s: %s", s, emsg); - return 1; - } - break; - case '?': - return 1; - } - if (!(builtin_opt.info & GI_MINUSMINUS)) { - /* treat a lone - like -- */ - if (wp[builtin_opt.optind] - && strcmp(wp[builtin_opt.optind], "-") == 0) - builtin_opt.optind++; - } else if (flags & PO_PMINUSMINUS) - builtin_opt.optind--; - wp += builtin_opt.optind; - } - - Xinit(xs, xp, 128, ATEMP); - - while (*wp != NULL) { - int c; - s = *wp; - while ((c = *s++) != '\0') { - Xcheck(xs, xp); - if ((flags & PO_EXPAND) && c == '\\') { - int i; - - switch ((c = *s++)) { - /* Oddly enough, \007 seems more portable than - * \a (due to HP-UX cc, Ultrix cc, old pcc's, - * etc.). - */ - case 'a': c = '\007'; break; - case 'b': c = '\b'; break; - case 'c': flags &= ~PO_NL; - continue; /* AT&T brain damage */ - case 'f': c = '\f'; break; - case 'n': c = '\n'; break; - case 'r': c = '\r'; break; - case 't': c = '\t'; break; - case 'v': c = 0x0B; break; - case '0': - /* Look for an octal number: can have - * three digits (not counting the - * leading 0). Truly burnt. - */ - c = 0; - for (i = 0; i < 3; i++) { - if (*s >= '0' && *s <= '7') - c = c*8 + *s++ - '0'; - else - break; - } - break; - case '\0': s--; c = '\\'; break; - case '\\': break; - default: - Xput(xs, xp, '\\'); - } - } - Xput(xs, xp, c); - } - if (*++wp != NULL) - Xput(xs, xp, ' '); - } - if (flags & PO_NL) - Xput(xs, xp, '\n'); - - if (flags & PO_HIST) { - Xput(xs, xp, '\0'); - source->line++; - histsave(source->line, Xstring(xs, xp), 1); - Xfree(xs, xp); - } else { - int n, len = Xlength(xs, xp); - int UNINITIALIZED(opipe); - - /* Ensure we aren't killed by a SIGPIPE while writing to - * a coprocess. at&t ksh doesn't seem to do this (seems - * to just check that the co-process is alive, which is - * not enough). - */ - if (coproc.write >= 0 && coproc.write == fd) { - flags |= PO_COPROC; - opipe = block_pipe(); - } - for (s = Xstring(xs, xp); len > 0; ) { - n = write(fd, s, len); - if (n < 0) { - if (flags & PO_COPROC) - restore_pipe(opipe); - if (errno == EINTR) { - /* allow user to ^C out */ - intrcheck(); - if (flags & PO_COPROC) - opipe = block_pipe(); - continue; - } - return 1; - } - s += n; - len -= n; - } - if (flags & PO_COPROC) - restore_pipe(opipe); - } - - return 0; -} - -int -c_whence(char **wp) -{ - struct tbl *tp; - char *id; - int pflag = 0, vflag = 0, Vflag = 0; - int ret = 0; - int optc; - int iam_whence = wp[0][0] == 'w'; - int fcflags; - const char *options = iam_whence ? "pv" : "pvV"; - - while ((optc = ksh_getopt(wp, &builtin_opt, options)) != EOF) - switch (optc) { - case 'p': - pflag = 1; - break; - case 'v': - vflag = 1; - break; - case 'V': - Vflag = 1; - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - - - fcflags = FC_BI | FC_PATH | FC_FUNC; - if (!iam_whence) { - /* Note that -p on its own is deal with in comexec() */ - if (pflag) - fcflags |= FC_DEFPATH; - /* Convert command options to whence options - note that - * command -pV uses a different path search than whence -v - * or whence -pv. This should be considered a feature. - */ - vflag = Vflag; - } - if (pflag) - fcflags &= ~(FC_BI | FC_FUNC); - - while ((vflag || ret == 0) && (id = *wp++) != NULL) { - tp = NULL; - if ((iam_whence || vflag) && !pflag) - tp = tsearch(&keywords, id, hash(id)); - if (!tp && !pflag) { - tp = tsearch(&aliases, id, hash(id)); - if (tp && !(tp->flag & ISSET)) - tp = NULL; - } - if (!tp) - tp = findcom(id, fcflags); - if (vflag || (tp->type != CALIAS && tp->type != CEXEC - && tp->type != CTALIAS)) - shprintf("%s", id); - switch (tp->type) { - case CKEYWD: - if (vflag) - shprintf(" is a reserved word"); - break; - case CALIAS: - if (vflag) - shprintf(" is an %salias for ", - (tp->flag & EXPORT) ? "exported " - : null); - if (!iam_whence && !vflag) - shprintf("alias %s=", id); - print_value_quoted(tp->val.s); - break; - case CFUNC: - if (vflag) { - shprintf(" is a"); - if (tp->flag & EXPORT) - shprintf("n exported"); - if (tp->flag & TRACE) - shprintf(" traced"); - if (!(tp->flag & ISSET)) { - shprintf(" undefined"); - if (tp->u.fpath) - shprintf(" (autoload from %s)", - tp->u.fpath); - } - shprintf(" function"); - } - break; - case CSHELL: - if (vflag) - shprintf(" is a%s shell builtin", - (tp->flag & SPEC_BI) ? " special" : null); - break; - case CTALIAS: - case CEXEC: - if (tp->flag & ISSET) { - if (vflag) { - shprintf(" is "); - if (tp->type == CTALIAS) - shprintf( - "a tracked %salias for ", - (tp->flag & EXPORT) ? - "exported " - : null); - } - shprintf("%s", tp->val.s); - } else { - if (vflag) - shprintf(" not found"); - ret = 1; - } - break; - default: - shprintf("%s is *GOK*", id); - break; - } - if (vflag || !ret) - shprintf(newline); - } - return ret; -} - -/* Deal with command -vV - command -p dealt with in comexec() */ -int -c_command(char **wp) -{ - /* Let c_whence do the work. Note that c_command() must be - * a distinct function from c_whence() (tested in comexec()). - */ - return c_whence(wp); -} - -/* typeset, export, and readonly */ -int -c_typeset(char **wp) -{ - struct block *l = e->loc; - struct tbl *vp, **p; - Tflag fset = 0, fclr = 0; - int thing = 0, func = 0, local = 0; - const char *options = "L#R#UZ#fi#lprtux"; /* see comment below */ - char *fieldstr, *basestr; - int field, base; - int optc; - Tflag flag; - int pflag = 0; - - switch (**wp) { - case 'e': /* export */ - fset |= EXPORT; - options = "p"; - break; - case 'r': /* readonly */ - fset |= RDONLY; - options = "p"; - break; - case 's': /* set */ - /* called with 'typeset -' */ - break; - case 't': /* typeset */ - local = 1; - break; - } - - fieldstr = basestr = NULL; - builtin_opt.flags |= GF_PLUSOPT; - /* at&t ksh seems to have 0-9 as options, which are multiplied - * to get a number that is used with -L, -R, -Z or -i (eg, -1R2 - * sets right justify in a field of 12). This allows options - * to be grouped in an order (eg, -Lu12), but disallows -i8 -L3 and - * does not allow the number to be specified as a separate argument - * Here, the number must follow the RLZi option, but is optional - * (see the # kludge in ksh_getopt()). - */ - while ((optc = ksh_getopt(wp, &builtin_opt, options)) != EOF) { - flag = 0; - switch (optc) { - case 'L': - flag = LJUST; - fieldstr = builtin_opt.optarg; - break; - case 'R': - flag = RJUST; - fieldstr = builtin_opt.optarg; - break; - case 'U': - /* at&t ksh uses u, but this conflicts with - * upper/lower case. If this option is changed, - * need to change the -U below as well - */ - flag = INT_U; - break; - case 'Z': - flag = ZEROFIL; - fieldstr = builtin_opt.optarg; - break; - case 'f': - func = 1; - break; - case 'i': - flag = INTEGER; - basestr = builtin_opt.optarg; - break; - case 'l': - flag = LCASEV; - break; - case 'p': /* posix export/readonly -p flag. - * typeset -p is the same as typeset (in pdksh); - * here for compatibility with ksh93. - */ - pflag = 1; - break; - case 'r': - flag = RDONLY; - break; - case 't': - flag = TRACE; - break; - case 'u': - flag = UCASEV_AL; /* upper case / autoload */ - break; - case 'x': - flag = EXPORT; - break; - case '?': - return 1; - } - if (builtin_opt.info & GI_PLUS) { - fclr |= flag; - fset &= ~flag; - thing = '+'; - } else { - fset |= flag; - fclr &= ~flag; - thing = '-'; - } - } - - field = 0; - if (fieldstr && !bi_getn(fieldstr, &field)) - return 1; - base = 0; - if (basestr && !bi_getn(basestr, &base)) - return 1; - - if (!(builtin_opt.info & GI_MINUSMINUS) && wp[builtin_opt.optind] - && (wp[builtin_opt.optind][0] == '-' - || wp[builtin_opt.optind][0] == '+') - && wp[builtin_opt.optind][1] == '\0') - { - thing = wp[builtin_opt.optind][0]; - builtin_opt.optind++; - } - - if (func && ((fset|fclr) & ~(TRACE|UCASEV_AL|EXPORT))) { - bi_errorf("only -t, -u and -x options may be used with -f"); - return 1; - } - if (wp[builtin_opt.optind]) { - /* Take care of exclusions. - * At this point, flags in fset are cleared in fclr and vise - * versa. This property should be preserved. - */ - if (fset & LCASEV) /* LCASEV has priority over UCASEV_AL */ - fset &= ~UCASEV_AL; - if (fset & LJUST) /* LJUST has priority over RJUST */ - fset &= ~RJUST; - if ((fset & (ZEROFIL|LJUST)) == ZEROFIL) { /* -Z implies -ZR */ - fset |= RJUST; - fclr &= ~RJUST; - } - /* Setting these attributes clears the others, unless they - * are also set in this command - */ - if (fset & (LJUST|RJUST|ZEROFIL|UCASEV_AL|LCASEV|INTEGER - |INT_U|INT_L)) - fclr |= ~fset & - (LJUST|RJUST|ZEROFIL|UCASEV_AL|LCASEV|INTEGER - |INT_U|INT_L); - } - - /* set variables and attributes */ - if (wp[builtin_opt.optind]) { - int i; - int rval = 0; - struct tbl *f; - - if (local && !func) - fset |= LOCAL; - for (i = builtin_opt.optind; wp[i]; i++) { - if (func) { - f = findfunc(wp[i], hash(wp[i]), - (fset&UCASEV_AL) ? true : false); - if (!f) { - /* at&t ksh does ++rval: bogus */ - rval = 1; - continue; - } - if (fset | fclr) { - f->flag |= fset; - f->flag &= ~fclr; - } else - fptreef(shl_stdout, 0, - f->flag & FKSH ? - "function %s %T\n" - : "%s() %T\n" - , - wp[i], f->val.t); - } else if (!typeset(wp[i], fset, fclr, field, base)) { - bi_errorf("%s: not identifier", wp[i]); - return 1; - } - } - return rval; - } - - /* list variables and attributes */ - flag = fset | fclr; /* no difference at this point.. */ - if (func) { - for (l = e->loc; l; l = l->next) { - for (p = tsort(&l->funs); (vp = *p++); ) { - if (flag && (vp->flag & flag) == 0) - continue; - if (thing == '-') - fptreef(shl_stdout, 0, vp->flag & FKSH ? - "function %s %T\n" - : "%s() %T\n", - vp->name, vp->val.t); - else - shprintf("%s\n", vp->name); - } - } - } else { - for (l = e->loc; l; l = l->next) { - for (p = tsort(&l->vars); (vp = *p++); ) { - struct tbl *tvp; - int any_set = 0; - /* - * See if the parameter is set (for arrays, if any - * element is set). - */ - for (tvp = vp; tvp; tvp = tvp->u.array) - if (tvp->flag & ISSET) { - any_set = 1; - break; - } - /* - * Check attributes - note that all array elements - * have (should have?) the same attributes, so checking - * the first is sufficient. - * - * Report an unset param only if the user has - * explicitly given it some attribute (like export); - * otherwise, after "echo $FOO", we would report FOO... - */ - if (!any_set && !(vp->flag & USERATTRIB)) - continue; - if (flag && (vp->flag & flag) == 0) - continue; - for (; vp; vp = vp->u.array) { - /* Ignore array elements that aren't set unless there - * are no set elements, in which case the first is - * reported on - */ - if ((vp->flag&ARRAY) && any_set && !(vp->flag & ISSET)) - continue; - /* no arguments */ - if (thing == 0 && flag == 0) { - /* at&t ksh prints things like export, integer, - * leftadj, zerofill, etc., but POSIX says must - * be suitable for re-entry... - */ - shprintf("typeset "); - if ((vp->flag&INTEGER)) - shprintf("-i "); - if ((vp->flag&EXPORT)) - shprintf("-x "); - if ((vp->flag&RDONLY)) - shprintf("-r "); - if ((vp->flag&TRACE)) - shprintf("-t "); - if ((vp->flag&LJUST)) - shprintf("-L%d ", vp->u2.field); - if ((vp->flag&RJUST)) - shprintf("-R%d ", vp->u2.field); - if ((vp->flag&ZEROFIL)) - shprintf("-Z "); - if ((vp->flag&LCASEV)) - shprintf("-l "); - if ((vp->flag&UCASEV_AL)) - shprintf("-u "); - if ((vp->flag&INT_U)) - shprintf("-U "); - shprintf("%s\n", vp->name); - if (vp->flag&ARRAY) - break; - } else { - if (pflag) - shprintf("%s ", - (flag & EXPORT) ? "export" : "readonly"); - if ((vp->flag&ARRAY) && any_set) - shprintf("%s[%d]", vp->name, vp->index); - else - shprintf("%s", vp->name); - if (thing == '-' && (vp->flag&ISSET)) { - char *s = str_val(vp); - - shprintf("="); - /* at&t ksh can't have justified integers.. */ - if ((vp->flag & (INTEGER|LJUST|RJUST)) - == INTEGER) - shprintf("%s", s); - else - print_value_quoted(s); - } - shprintf(newline); - } - /* Only report first 'element' of an array with - * no set elements. - */ - if (!any_set) - break; - } - } - } - } - return 0; -} - -int -c_alias(char **wp) -{ - struct table *t = &aliases; - int rv = 0, rflag = 0, tflag, Uflag = 0, pflag = 0; - int prefix = 0; - Tflag xflag = 0; - int optc; - - builtin_opt.flags |= GF_PLUSOPT; - while ((optc = ksh_getopt(wp, &builtin_opt, "dprtUx")) != EOF) { - prefix = builtin_opt.info & GI_PLUS ? '+' : '-'; - switch (optc) { - case 'd': - t = &homedirs; - break; - case 'p': - pflag = 1; - break; - case 'r': - rflag = 1; - break; - case 't': - t = &taliases; - break; - case 'U': /* kludge for tracked alias initialization - * (don't do a path search, just make an entry) - */ - Uflag = 1; - break; - case 'x': - xflag = EXPORT; - break; - case '?': - return 1; - } - } - wp += builtin_opt.optind; - - if (!(builtin_opt.info & GI_MINUSMINUS) && *wp - && (wp[0][0] == '-' || wp[0][0] == '+') && wp[0][1] == '\0') - { - prefix = wp[0][0]; - wp++; - } - - tflag = t == &taliases; - - /* "hash -r" means reset all the tracked aliases.. */ - if (rflag) { - static const char *const args[] = { - "unalias", "-ta", NULL - }; - - if (!tflag || *wp) { - shprintf( - "alias: -r flag can only be used with -t and without arguments\n"); - return 1; - } - ksh_getopt_reset(&builtin_opt, GF_ERROR); - return c_unalias((char **) args); - } - - - if (*wp == NULL) { - struct tbl *ap, **p; - - for (p = tsort(t); (ap = *p++) != NULL; ) - if ((ap->flag & (ISSET|xflag)) == (ISSET|xflag)) { - if (pflag) - shf_puts("alias ", shl_stdout); - shf_puts(ap->name, shl_stdout); - if (prefix != '+') { - shf_putc('=', shl_stdout); - print_value_quoted(ap->val.s); - } - shprintf(newline); - } - } - - for (; *wp != NULL; wp++) { - char *alias = *wp; - char *val = strchr(alias, '='); - char *newval; - struct tbl *ap; - int h; - - if (val) - alias = str_nsave(alias, val++ - alias, ATEMP); - h = hash(alias); - if (val == NULL && !tflag && !xflag) { - ap = tsearch(t, alias, h); - if (ap != NULL && (ap->flag&ISSET)) { - if (pflag) - shf_puts("alias ", shl_stdout); - shf_puts(ap->name, shl_stdout); - if (prefix != '+') { - shf_putc('=', shl_stdout); - print_value_quoted(ap->val.s); - } - shprintf(newline); - } else { - shprintf("%s alias not found\n", alias); - rv = 1; - } - continue; - } - ap = tenter(t, alias, h); - ap->type = tflag ? CTALIAS : CALIAS; - /* Are we setting the value or just some flags? */ - if ((val && !tflag) || (!val && tflag && !Uflag)) { - if (ap->flag&ALLOC) { - ap->flag &= ~(ALLOC|ISSET); - afree((void*)ap->val.s, APERM); - } - /* ignore values for -t (at&t ksh does this) */ - newval = tflag ? search(alias, path, X_OK, NULL) - : val; - if (newval) { - ap->val.s = str_save(newval, APERM); - ap->flag |= ALLOC|ISSET; - } else - ap->flag &= ~ISSET; - } - ap->flag |= DEFINED; - if (prefix == '+') - ap->flag &= ~xflag; - else - ap->flag |= xflag; - if (val) - afree(alias, ATEMP); - } - - return rv; -} - -int -c_unalias(char **wp) -{ - struct table *t = &aliases; - struct tbl *ap; - int rv = 0, all = 0; - int optc; - - while ((optc = ksh_getopt(wp, &builtin_opt, "adt")) != EOF) - switch (optc) { - case 'a': - all = 1; - break; - case 'd': - t = &homedirs; - break; - case 't': - t = &taliases; - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - - for (; *wp != NULL; wp++) { - ap = tsearch(t, *wp, hash(*wp)); - if (ap == NULL) { - rv = 1; /* POSIX */ - continue; - } - if (ap->flag&ALLOC) { - ap->flag &= ~(ALLOC|ISSET); - afree((void*)ap->val.s, APERM); - } - ap->flag &= ~(DEFINED|ISSET|EXPORT); - } - - if (all) { - struct tstate ts; - - for (twalk(&ts, t); (ap = tnext(&ts)); ) { - if (ap->flag&ALLOC) { - ap->flag &= ~(ALLOC|ISSET); - afree((void*)ap->val.s, APERM); - } - ap->flag &= ~(DEFINED|ISSET|EXPORT); - } - } - - return rv; -} - -int -c_let(char **wp) -{ - int rv = 1; - long val; - - if (wp[1] == NULL) /* at&t ksh does this */ - bi_errorf("no arguments"); - else - for (wp++; *wp; wp++) - if (!evaluate(*wp, &val, KSH_RETURN_ERROR)) { - rv = 2; /* distinguish error from zero result */ - break; - } else - rv = val == 0; - return rv; -} - -int -c_jobs(char **wp) -{ - int optc; - int flag = 0; - int nflag = 0; - int rv = 0; - - while ((optc = ksh_getopt(wp, &builtin_opt, "lpnz")) != EOF) - switch (optc) { - case 'l': - flag = 1; - break; - case 'p': - flag = 2; - break; - case 'n': - nflag = 1; - break; - case 'z': /* debugging: print zombies */ - nflag = -1; - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - if (!*wp) { - if (j_jobs(NULL, flag, nflag)) - rv = 1; - } else { - for (; *wp; wp++) - if (j_jobs(*wp, flag, nflag)) - rv = 1; - } - return rv; -} - -#ifdef JOBS -int -c_fgbg(char **wp) -{ - int bg = strcmp(*wp, "bg") == 0; - int UNINITIALIZED(rv); - - if (!Flag(FMONITOR)) { - bi_errorf("job control not enabled"); - return 1; - } - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - wp += builtin_opt.optind; - if (*wp) - for (; *wp; wp++) - rv = j_resume(*wp, bg); - else - rv = j_resume("%%", bg); - /* POSIX says fg shall return 0 (unless an error occurs). - * at&t ksh returns the exit value of the job... - */ - return (bg || Flag(FPOSIX)) ? 0 : rv; -} -#endif - -struct kill_info { - size_t num_width; - size_t name_width; -}; -static char *kill_fmt_entry(void *arg, int i, char *buf, int buflen); - -/* format a single kill item */ -static char * -kill_fmt_entry(void *arg, int i, char *buf, int buflen) -{ - struct kill_info *ki = (struct kill_info *) arg; - - i++; - if (sigtraps[i].name) - shf_snprintf(buf, buflen, "%*d %*s %s", - ki->num_width, i, - ki->name_width, sigtraps[i].name, - sigtraps[i].mess); - else - shf_snprintf(buf, buflen, "%*d %*d %s", - ki->num_width, i, - ki->name_width, sigtraps[i].signal, - sigtraps[i].mess); - return buf; -} - - -int -c_kill(char **wp) -{ - Trap *t = NULL; - char *p; - int lflag = 0; - int i, n, rv, sig; - - /* assume old style options if -digits or -UPPERCASE */ - if ((p = wp[1]) && *p == '-' && (digit(p[1]) || isupper(p[1]))) { - if (!(t = gettrap(p + 1, true))) { - bi_errorf("bad signal '%s'", p + 1); - return 1; - } - i = (wp[2] && strcmp(wp[2], "--") == 0) ? 3 : 2; - } else { - int optc; - - while ((optc = ksh_getopt(wp, &builtin_opt, "ls:")) != EOF) - switch (optc) { - case 'l': - lflag = 1; - break; - case 's': - if (!(t = gettrap(builtin_opt.optarg, true))) { - bi_errorf("bad signal '%s'", - builtin_opt.optarg); - return 1; - } - break; - case '?': - return 1; - } - i = builtin_opt.optind; - } - if ((lflag && t) || (!wp[i] && !lflag)) { - shf_fprintf(shl_out, -"Usage: kill [ -s signame | -signum | -signame ] {pid|job}...\n\ - kill -l [exit_status]\n" - ); - bi_errorf(null); - return 1; - } - - if (lflag) { - if (wp[i]) { - for (; wp[i]; i++) { - if (!bi_getn(wp[i], &n)) - return 1; - if (n > 128 && n < 128 + NSIG) - n -= 128; - if (n > 0 && n < NSIG && sigtraps[n].name) - shprintf("%s\n", sigtraps[n].name); - else - shprintf("%d\n", n); - } - } else if (Flag(FPOSIX)) { - p = null; - for (i = 1; i < NSIG; i++, p = space) - if (sigtraps[i].name) - shprintf("%s%s", p, sigtraps[i].name); - shprintf(newline); - } else { - int i; - size_t w, mess_width; - struct kill_info ki; - - for (i = NSIG, ki.num_width = 1; i >= 10; i /= 10) - ki.num_width++; - ki.name_width = mess_width = 0; - for (i = 0; i < NSIG; i++) { - w = sigtraps[i].name ? strlen(sigtraps[i].name) - : ki.num_width; - if (w > ki.name_width) - ki.name_width = w; - w = strlen(sigtraps[i].mess); - if (w > mess_width) - mess_width = w; - } - - print_columns(shl_stdout, NSIG - 1, - kill_fmt_entry, (void *) &ki, - ki.num_width + ki.name_width + mess_width + 3, 1); - } - return 0; - } - rv = 0; - sig = t ? t->signal : SIGTERM; - for (; (p = wp[i]); i++) { - if (*p == '%') { - if (j_kill(p, sig)) - rv = 1; - } else if (!getn(p, &n)) { - bi_errorf("%s: arguments must be jobs or process IDs", - p); - rv = 1; - } else { - /* use killpg if < -1 since -1 does special things for - * some non-killpg-endowed kills - */ - if ((n < -1 ? killpg(-n, sig) : kill(n, sig)) < 0) { - bi_errorf("%s: %s", p, strerror(errno)); - rv = 1; - } - } - } - return rv; -} - -void -getopts_reset(int val) -{ - if (val >= 1) { - ksh_getopt_reset(&user_opt, - GF_NONAME | (Flag(FPOSIX) ? 0 : GF_PLUSOPT)); - user_opt.optind = user_opt.uoptind = val; - } -} - -int -c_getopts(char **wp) -{ - int argc; - const char *options; - const char *var; - int optc; - int ret; - char buf[3]; - struct tbl *vq, *voptarg; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - wp += builtin_opt.optind; - - options = *wp++; - if (!options) { - bi_errorf("missing options argument"); - return 1; - } - - var = *wp++; - if (!var) { - bi_errorf("missing name argument"); - return 1; - } - if (!*var || *skip_varname(var, true)) { - bi_errorf("%s: is not an identifier", var); - return 1; - } - - if (e->loc->next == NULL) { - internal_errorf(0, "c_getopts: no argv"); - return 1; - } - /* Which arguments are we parsing... */ - if (*wp == NULL) - wp = e->loc->next->argv; - else - *--wp = e->loc->next->argv[0]; - - /* Check that our saved state won't cause a core dump... */ - for (argc = 0; wp[argc]; argc++) - ; - if (user_opt.optind > argc - || (user_opt.p != 0 - && user_opt.p > strlen(wp[user_opt.optind - 1]))) - { - bi_errorf("arguments changed since last call"); - return 1; - } - - user_opt.optarg = NULL; - optc = ksh_getopt(wp, &user_opt, options); - - if (optc >= 0 && optc != '?' && (user_opt.info & GI_PLUS)) { - buf[0] = '+'; - buf[1] = optc; - buf[2] = '\0'; - } else { - /* POSIX says var is set to ? at end-of-options, at&t ksh - * sets it to null - we go with POSIX... - */ - buf[0] = optc < 0 ? '?' : optc; - buf[1] = '\0'; - } - - /* at&t ksh does not change OPTIND if it was an unknown option. - * Scripts counting on this are prone to break... (ie, don't count - * on this staying). - */ - if (optc != '?') { - user_opt.uoptind = user_opt.optind; - } - - voptarg = global("OPTARG"); - voptarg->flag &= ~RDONLY; /* at&t ksh clears ro and int */ - /* Paranoia: ensure no bizarre results. */ - if (voptarg->flag & INTEGER) - typeset("OPTARG", 0, INTEGER, 0, 0); - if (user_opt.optarg == NULL) - unset(voptarg, 0); - else - /* This can't fail (have cleared readonly/integer) */ - setstr(voptarg, user_opt.optarg, KSH_RETURN_ERROR); - - ret = 0; - - vq = global(var); - /* Error message already printed (integer, readonly) */ - if (!setstr(vq, buf, KSH_RETURN_ERROR)) - ret = 1; - if (Flag(FEXPORT)) - typeset(var, EXPORT, 0, 0, 0); - - return optc < 0 ? 1 : ret; -} - -int -c_bind(char **wp) -{ - int rv = 0, macro = 0, list = 0; - char *cp; - int optc; - - while ((optc = ksh_getopt(wp, &builtin_opt, "lm")) != EOF) - switch (optc) { - case 'l': - list = 1; - break; - case 'm': - macro = 1; - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - - if (*wp == NULL) /* list all */ - rv = x_bind((char*)NULL, (char*)NULL, 0, list); - - for (; *wp != NULL; wp++) { - cp = strchr(*wp, '='); - if (cp != NULL) - *cp++ = '\0'; - if (x_bind(*wp, cp, macro, 0)) - rv = 1; - } - - return rv; -} - -/* A leading = means assignments before command are kept; - * a leading * means a POSIX special builtin; - * a leading + means a POSIX regular builtin - * (* and + should not be combined). - */ -const struct builtin kshbuiltins [] = { - {"+alias", c_alias}, /* no =: at&t manual wrong */ - {"+cd", c_cd}, - {"+command", c_command}, - {"echo", c_print}, - {"*=export", c_typeset}, - {"+fc", c_fc}, - {"+getopts", c_getopts}, - {"+jobs", c_jobs}, - {"+kill", c_kill}, - {"let", c_let}, - {"print", c_print}, - {"pwd", c_pwd}, - {"*=readonly", c_typeset}, - {"=typeset", c_typeset}, - {"+unalias", c_unalias}, - {"whence", c_whence}, -#ifdef JOBS - {"+bg", c_fgbg}, - {"+fg", c_fgbg}, -#endif - {"bind", c_bind}, - {NULL, NULL} -}; diff --git a/c_sh.c b/c_sh.c deleted file mode 100644 index daf54a3..0000000 --- a/c_sh.c +++ /dev/null @@ -1,861 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: c_sh.c,v 1.25 2004/12/22 18:48:56 millert Exp $ */ - -/* - * built-in Bourne commands - */ - -#include "sh.h" -#include -#include -#include - -__RCSID("$MirOS$"); - -static void p_time(struct shf *, int, struct timeval *, int, char *, char *); - -/* :, false and true */ -int -c_label(char **wp) -{ - return wp[0][0] == 'f' ? 1 : 0; -} - -int -c_shift(char **wp) -{ - struct block *l = e->loc; - int n; - long val; - char *arg; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - arg = wp[builtin_opt.optind]; - - if (arg) { - evaluate(arg, &val, KSH_UNWIND_ERROR); - n = val; - } else - n = 1; - if (n < 0) { - bi_errorf("%s: bad number", arg); - return (1); - } - if (l->argc < n) { - bi_errorf("nothing to shift"); - return (1); - } - l->argv[n] = l->argv[0]; - l->argv += n; - l->argc -= n; - return 0; -} - -int -c_umask(char **wp) -{ - int i; - char *cp; - int symbolic = 0; - mode_t old_umask; - int optc; - - while ((optc = ksh_getopt(wp, &builtin_opt, "S")) != EOF) - switch (optc) { - case 'S': - symbolic = 1; - break; - case '?': - return 1; - } - cp = wp[builtin_opt.optind]; - if (cp == NULL) { - old_umask = umask(0); - umask(old_umask); - if (symbolic) { - char buf[18]; - int j; - - old_umask = ~old_umask; - cp = buf; - for (i = 0; i < 3; i++) { - *cp++ = "ugo"[i]; - *cp++ = '='; - for (j = 0; j < 3; j++) - if (old_umask & (1 << (8 - (3*i + j)))) - *cp++ = "rwx"[j]; - *cp++ = ','; - } - cp[-1] = '\0'; - shprintf("%s\n", buf); - } else - shprintf("%#3.3o\n", old_umask); - } else { - mode_t new_umask; - - if (digit(*cp)) { - for (new_umask = 0; *cp >= '0' && *cp <= '7'; cp++) - new_umask = new_umask * 8 + (*cp - '0'); - if (*cp) { - bi_errorf("bad number"); - return 1; - } - } else { - /* symbolic format */ - int positions, new_val; - char op; - - old_umask = umask(0); - umask(old_umask); /* in case of error */ - old_umask = ~old_umask; - new_umask = old_umask; - positions = 0; - while (*cp) { - while (*cp && strchr("augo", *cp)) - switch (*cp++) { - case 'a': positions |= 0111; break; - case 'u': positions |= 0100; break; - case 'g': positions |= 0010; break; - case 'o': positions |= 0001; break; - } - if (!positions) - positions = 0111; /* default is a */ - if (!strchr("=+-", op = *cp)) - break; - cp++; - new_val = 0; - while (*cp && strchr("rwxugoXs", *cp)) - switch (*cp++) { - case 'r': new_val |= 04; break; - case 'w': new_val |= 02; break; - case 'x': new_val |= 01; break; - case 'u': new_val |= old_umask >> 6; - break; - case 'g': new_val |= old_umask >> 3; - break; - case 'o': new_val |= old_umask >> 0; - break; - case 'X': if (old_umask & 0111) - new_val |= 01; - break; - case 's': /* ignored */ - break; - } - new_val = (new_val & 07) * positions; - switch (op) { - case '-': - new_umask &= ~new_val; - break; - case '=': - new_umask = new_val - | (new_umask & ~(positions * 07)); - break; - case '+': - new_umask |= new_val; - } - if (*cp == ',') { - positions = 0; - cp++; - } else if (!strchr("=+-", *cp)) - break; - } - if (*cp) { - bi_errorf("bad mask"); - return 1; - } - new_umask = ~new_umask; - } - umask(new_umask); - } - return 0; -} - -int -c_dot(char **wp) -{ - char *file, *cp; - char **argv; - int argc; - int i; - int err; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - - if ((cp = wp[builtin_opt.optind]) == NULL) - return 0; - file = search(cp, path, R_OK, &err); - if (file == NULL) { - bi_errorf("%s: %s", cp, err ? strerror(err) : "not found"); - return 1; - } - - /* Set positional parameters? */ - if (wp[builtin_opt.optind + 1]) { - argv = wp + builtin_opt.optind; - argv[0] = e->loc->argv[0]; /* preserve $0 */ - for (argc = 0; argv[argc + 1]; argc++) - ; - } else { - argc = 0; - argv = NULL; - } - i = include(file, argc, argv, 0); - if (i < 0) { /* should not happen */ - bi_errorf("%s: %s", cp, strerror(errno)); - return 1; - } - return i; -} - -int -c_wait(char **wp) -{ - int UNINITIALIZED(rv); - int sig; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - wp += builtin_opt.optind; - if (*wp == NULL) { - while (waitfor(NULL, &sig) >= 0) - ; - rv = sig; - } else { - for (; *wp; wp++) - rv = waitfor(*wp, &sig); - if (rv < 0) - rv = sig ? sig : 127; /* magic exit code: bad job-id */ - } - return rv; -} - -int -c_read(char **wp) -{ - int c = 0; - int expand = 1, history = 0; - int expanding; - int ecode = 0; - char *cp; - int fd = 0; - struct shf *shf; - int optc; - const char *emsg; - XString cs, xs; - struct tbl *vp; - char UNINITIALIZED(*xp); - - while ((optc = ksh_getopt(wp, &builtin_opt, "prsu,")) != EOF) - switch (optc) { - case 'p': - if ((fd = coproc_getfd(R_OK, &emsg)) < 0) { - bi_errorf("-p: %s", emsg); - return 1; - } - break; - case 'r': - expand = 0; - break; - case 's': - history = 1; - break; - case 'u': - if (!*(cp = builtin_opt.optarg)) - fd = 0; - else if ((fd = check_fd(cp, R_OK, &emsg)) < 0) { - bi_errorf("-u: %s: %s", cp, emsg); - return 1; - } - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - - if (*wp == NULL) - *--wp = "REPLY"; - - /* Since we can't necessarily seek backwards on non-regular files, - * don't buffer them so we can't read too much. - */ - shf = shf_reopen(fd, SHF_RD | SHF_INTERRUPT | can_seek(fd), shl_spare); - - if ((cp = strchr(*wp, '?')) != NULL) { - *cp = 0; - if (isatty(fd)) { - /* at&t ksh says it prints prompt on fd if it's open - * for writing and is a tty, but it doesn't do it - * (it also doesn't check the interactive flag, - * as is indicated in the Kornshell book). - */ - shellf("%s", cp+1); - } - } - - /* If we are reading from the co-process for the first time, - * make sure the other side of the pipe is closed first. This allows - * the detection of eof. - * - * This is not compatible with at&t ksh... the fd is kept so another - * coproc can be started with same output, however, this means eof - * can't be detected... This is why it is closed here. - * If this call is removed, remove the eof check below, too. - * coproc_readw_close(fd); - */ - - if (history) - Xinit(xs, xp, 128, ATEMP); - expanding = 0; - Xinit(cs, cp, 128, ATEMP); - for (; *wp != NULL; wp++) { - for (cp = Xstring(cs, cp); ; ) { - if (c == '\n' || c == EOF) - break; - while (1) { - c = shf_getc(shf); - if (c == '\0') - continue; - if (c == EOF && shf_error(shf) - && shf_errno(shf) == EINTR) - { - /* Was the offending signal one that - * would normally kill a process? - * If so, pretend the read was killed. - */ - ecode = fatal_trap_check(); - - /* non fatal (eg, CHLD), carry on */ - if (!ecode) { - shf_clearerr(shf); - continue; - } - } - break; - } - if (history) { - Xcheck(xs, xp); - Xput(xs, xp, c); - } - Xcheck(cs, cp); - if (expanding) { - expanding = 0; - if (c == '\n') { - c = 0; - if (Flag(FTALKING_I) && isatty(fd)) { - /* set prompt in case this is - * called from .profile or $ENV - */ - set_prompt(PS2, NULL); - pprompt(prompt, 0); - } - } else if (c != EOF) - Xput(cs, cp, c); - continue; - } - if (expand && c == '\\') { - expanding = 1; - continue; - } - if (c == '\n' || c == EOF) - break; - if (ctype(c, C_IFS)) { - if (Xlength(cs, cp) == 0 && ctype(c, C_IFSWS)) - continue; - if (wp[1]) - break; - } - Xput(cs, cp, c); - } - /* strip trailing IFS white space from last variable */ - if (!wp[1]) - while (Xlength(cs, cp) && ctype(cp[-1], C_IFS) - && ctype(cp[-1], C_IFSWS)) - cp--; - Xput(cs, cp, '\0'); - vp = global(*wp); - /* Must be done before setting export. */ - if (vp->flag & RDONLY) { - shf_flush(shf); - bi_errorf("%s is read only", *wp); - return 1; - } - if (Flag(FEXPORT)) - typeset(*wp, EXPORT, 0, 0, 0); - if (!setstr(vp, Xstring(cs, cp), KSH_RETURN_ERROR)) { - shf_flush(shf); - return 1; - } - } - - shf_flush(shf); - if (history) { - Xput(xs, xp, '\0'); - source->line++; - histsave(source->line, Xstring(xs, xp), 1); - Xfree(xs, xp); - } - /* if this is the co-process fd, close the file descriptor - * (can get eof if and only if all processes are have died, ie, - * coproc.njobs is 0 and the pipe is closed). - */ - if (c == EOF && !ecode) - coproc_read_close(fd); - - return ecode ? ecode : c == EOF; -} - -int -c_eval(char **wp) -{ - struct source *s; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - s = pushs(SWORDS, ATEMP); - s->u.strv = wp + builtin_opt.optind; - if (!Flag(FPOSIX)) { - /* - * Handle case where the command is empty due to failed - * command substitution, eg, eval "$(false)". - * In this case, shell() will not set/change exstat (because - * compiled tree is empty), so will use this value. - * subst_exstat is cleared in execute(), so should be 0 if - * there were no substitutions. - * - * A strict reading of POSIX says we don't do this (though - * it is traditionally done). [from 1003.2-1992] - * 3.9.1: Simple Commands - * ... If there is a command name, execution shall - * continue as described in 3.9.1.1. If there - * is no command name, but the command contained a command - * substitution, the command shall complete with the exit - * status of the last command substitution - * 3.9.1.1: Command Search and Execution - * ...(1)...(a) If the command name matches the name of - * a special built-in utility, that special built-in - * utility shall be invoked. - * 3.14.5: Eval - * ... If there are no arguments, or only null arguments, - * eval shall return an exit status of zero. - */ - exstat = subst_exstat; - } - - return shell(s, false); -} - -int -c_trap(char **wp) -{ - int i; - char *s; - Trap *p; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - wp += builtin_opt.optind; - - if (*wp == NULL) { - int anydfl = 0; - - for (p = sigtraps, i = NSIG + 1; --i >= 0; p++) { - if (p->trap == NULL) - anydfl = 1; - else { - shprintf("trap -- "); - print_value_quoted(p->trap); - shprintf(" %s\n", p->name); - } - } - return 0; - } - - /* - * Use case sensitive lookup for first arg so the - * command 'exit' isn't confused with the pseudo-signal - * 'EXIT'. - */ - s = (gettrap(*wp, false) == NULL) ? *wp++ : NULL; /* get command */ - if (s != NULL && s[0] == '-' && s[1] == '\0') - s = NULL; - - /* set/clear traps */ - while (*wp != NULL) { - p = gettrap(*wp++, true); - if (p == NULL) { - bi_errorf("bad signal %s", wp[-1]); - return 1; - } - settrap(p, s); - } - return 0; -} - -int -c_exitreturn(char **wp) -{ - int how = LEXIT; - int n; - char *arg; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - arg = wp[builtin_opt.optind]; - - if (arg) { - if (!getn(arg, &n)) { - exstat = 1; - warningf(true, "%s: bad number", arg); - } else - exstat = n; - } - if (wp[0][0] == 'r') { /* return */ - struct env *ep; - - /* need to tell if this is exit or return so trap exit will - * work right (POSIX) - */ - for (ep = e; ep; ep = ep->oenv) - if (STOP_RETURN(ep->type)) { - how = LRETURN; - break; - } - } - - if (how == LEXIT && !really_exit && j_stopped_running()) { - really_exit = 1; - how = LSHELL; - } - - quitenv(NULL); /* get rid of any i/o redirections */ - unwind(how); - /*NOTREACHED*/ - return 0; -} - -int -c_brkcont(char **wp) -{ - int n, quit; - struct env *ep, *last_ep = NULL; - char *arg; - - if (ksh_getopt(wp, &builtin_opt, null) == '?') - return 1; - arg = wp[builtin_opt.optind]; - - if (!arg) - n = 1; - else if (!bi_getn(arg, &n)) - return 1; - quit = n; - if (quit <= 0) { - /* at&t ksh does this for non-interactive shells only - weird */ - bi_errorf("%s: bad value", arg); - return 1; - } - - /* Stop at E_NONE, E_PARSE, E_FUNC, or E_INCL */ - for (ep = e; ep && !STOP_BRKCONT(ep->type); ep = ep->oenv) - if (ep->type == E_LOOP) { - if (--quit == 0) - break; - ep->flags |= EF_BRKCONT_PASS; - last_ep = ep; - } - - if (quit) { - /* at&t ksh doesn't print a message - just does what it - * can. We print a message 'cause it helps in debugging - * scripts, but don't generate an error (ie, keep going). - */ - if (n == quit) { - warningf(true, "%s: cannot %s", wp[0], wp[0]); - return 0; - } - /* POSIX says if n is too big, the last enclosing loop - * shall be used. Doesn't say to print an error but we - * do anyway 'cause the user messed up. - */ - last_ep->flags &= ~EF_BRKCONT_PASS; - warningf(true, "%s: can only %s %d level(s)", - wp[0], wp[0], n - quit); - } - - unwind(*wp[0] == 'b' ? LBREAK : LCONTIN); - /*NOTREACHED*/ -} - -int -c_set(char **wp) -{ - int argi, setargs; - struct block *l = e->loc; - char **owp = wp; - - if (wp[1] == NULL) { - static const char *const args [] = { "set", "-", NULL }; - return c_typeset((char **) args); - } - - argi = parse_args(wp, OF_SET, &setargs); - if (argi < 0) - return 1; - /* set $# and $* */ - if (setargs) { - owp = wp += argi - 1; - wp[0] = l->argv[0]; /* save $0 */ - while (*++wp != NULL) - *wp = str_save(*wp, &l->area); - l->argc = wp - owp - 1; - l->argv = (char **) alloc(sizeofN(char *, l->argc+2), &l->area); - for (wp = l->argv; (*wp++ = *owp++) != NULL; ) - ; - } - /* POSIX says set exit status is 0, but old scripts that use - * getopt(1), use the construct: set -- $(getopt ab:c "$@") - * which assumes the exit value set will be that of the $() - * (subst_exstat is cleared in execute() so that it will be 0 - * if there are no command substitutions). - */ - return Flag(FPOSIX) ? 0 : subst_exstat; -} - -int -c_unset(char **wp) -{ - char *id; - int optc, unset_var = 1; - int ret = 0; - - while ((optc = ksh_getopt(wp, &builtin_opt, "fv")) != EOF) - switch (optc) { - case 'f': - unset_var = 0; - break; - case 'v': - unset_var = 1; - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - for (; (id = *wp) != NULL; wp++) - if (unset_var) { /* unset variable */ - struct tbl *vp = global(id); - - if (!(vp->flag & ISSET)) - ret = 1; - if ((vp->flag&RDONLY)) { - bi_errorf("%s is read only", vp->name); - return 1; - } - unset(vp, strchr(id, '[') ? 1 : 0); - } else { /* unset function */ - if (define(id, (struct op *) NULL)) - ret = 1; - } - return ret; -} - -static void -p_time(struct shf *shf, int posix, struct timeval *tv, int width, - char *prefix, char *suffix) -{ - if (posix) - shf_fprintf(shf, "%s%*ld.%02ld%s", prefix ? prefix : "", - width, (long)tv->tv_sec, tv->tv_usec / 10000, suffix); - else - shf_fprintf(shf, "%s%*ldm%ld.%02lds%s", prefix ? prefix : "", - width, (long)(tv->tv_sec / 60), (long)(tv->tv_sec % 60), - tv->tv_usec / 10000, suffix); -} - -int -c_times(char **wp GCC_FUNC_ATTR(unused)) -{ - struct rusage usage; - - (void) getrusage(RUSAGE_SELF, &usage); - p_time(shl_stdout, 0, &usage.ru_utime, 0, NULL, " "); - p_time(shl_stdout, 0, &usage.ru_stime, 0, NULL, "\n"); - - (void) getrusage(RUSAGE_CHILDREN, &usage); - p_time(shl_stdout, 0, &usage.ru_utime, 0, NULL, " "); - p_time(shl_stdout, 0, &usage.ru_stime, 0, NULL, "\n"); - - return 0; -} - -/* - * time pipeline (really a statement, not a built-in command) - */ -int -timex(struct op *t, int f) -{ -#define TF_NOARGS BIT(0) -#define TF_NOREAL BIT(1) /* don't report real time */ -#define TF_POSIX BIT(2) /* report in posix format */ - int rv = 0; - struct rusage ru0, ru1, cru0, cru1; - struct timeval usrtime, systime, tv0, tv1; - int tf = 0; - extern struct timeval j_usrtime, j_systime; /* computed by j_wait */ - char opts[1]; - - gettimeofday(&tv0, NULL); - getrusage(RUSAGE_SELF, &ru0); - getrusage(RUSAGE_CHILDREN, &cru0); - if (t->left) { - /* - * Two ways of getting cpu usage of a command: just use t0 - * and t1 (which will get cpu usage from other jobs that - * finish while we are executing t->left), or get the - * cpu usage of t->left. at&t ksh does the former, while - * pdksh tries to do the later (the j_usrtime hack doesn't - * really work as it only counts the last job). - */ - timerclear(&j_usrtime); - timerclear(&j_systime); - if (t->left->type == TCOM) - t->left->str = opts; - opts[0] = 0; - rv = execute(t->left, f | XTIME); - tf |= opts[0]; - gettimeofday(&tv1, NULL); - getrusage(RUSAGE_SELF, &ru1); - getrusage(RUSAGE_CHILDREN, &cru1); - } else - tf = TF_NOARGS; - - if (tf & TF_NOARGS) { /* ksh93 - report shell times (shell+kids) */ - tf |= TF_NOREAL; - timeradd(&ru0.ru_utime, &cru0.ru_utime, &usrtime); - timeradd(&ru0.ru_stime, &cru0.ru_stime, &systime); - } else { - timersub(&ru1.ru_utime, &ru0.ru_utime, &usrtime); - timeradd(&usrtime, &j_usrtime, &usrtime); - timersub(&ru1.ru_stime, &ru0.ru_stime, &systime); - timeradd(&systime, &j_systime, &systime); - } - - if (!(tf & TF_NOREAL)) { - timersub(&tv1, &tv0, &tv1); - if (tf & TF_POSIX) - p_time(shl_out, 1, &tv1, 5, "real ", "\n"); - else - p_time(shl_out, 0, &tv1, 5, NULL, " real "); - } - if (tf & TF_POSIX) - p_time(shl_out, 1, &usrtime, 5, "user ", "\n"); - else - p_time(shl_out, 0, &usrtime, 5, NULL, " user "); - if (tf & TF_POSIX) - p_time(shl_out, 1, &systime, 5, "sys ", "\n"); - else - p_time(shl_out, 0, &systime, 5, NULL, " system\n"); - shf_flush(shl_out); - - return rv; -} - -void -timex_hook(struct op *t, char **volatile *app) -{ - char **wp = *app; - int optc; - int i, j; - Getopt opt; - - ksh_getopt_reset(&opt, 0); - opt.optind = 0; /* start at the start */ - while ((optc = ksh_getopt(wp, &opt, ":p")) != EOF) - switch (optc) { - case 'p': - t->str[0] |= TF_POSIX; - break; - case '?': - errorf("time: -%s unknown option", opt.optarg); - case ':': - errorf("time: -%s requires an argument", - opt.optarg); - } - /* Copy command words down over options. */ - if (opt.optind != 0) { - for (i = 0; i < opt.optind; i++) - afree(wp[i], ATEMP); - for (i = 0, j = opt.optind; (wp[i] = wp[j]); i++, j++) - ; - } - if (!wp[0]) - t->str[0] |= TF_NOARGS; - *app = wp; -} - -/* exec with no args - args case is taken care of in comexec() */ -int -c_exec(char **wp GCC_FUNC_ATTR(unused)) -{ - int i; - - /* make sure redirects stay in place */ - if (e->savefd != NULL) { - for (i = 0; i < NUFILE; i++) { - if (e->savefd[i] > 0) - close(e->savefd[i]); - /* - * For ksh keep anything > 2 private, - * for sh, let them be (POSIX says what - * happens is unspecified and the bourne shell - * keeps them open). - */ - if (!Flag(FSH) && i > 2 && e->savefd[i]) - fcntl(i, F_SETFD, FD_CLOEXEC); - } - e->savefd = NULL; - } - return 0; -} - -/* dummy function, special case in comexec() */ -int -c_builtin(char **wp GCC_FUNC_ATTR(unused)) -{ - return 0; -} - -extern int c_test(char **wp); /* in c_test.c */ -extern int c_ulimit(char **wp); /* in c_ulimit.c */ - -/* A leading = means assignments before command are kept; - * a leading * means a POSIX special builtin; - * a leading + means a POSIX regular builtin - * (* and + should not be combined). - */ -const struct builtin shbuiltins [] = { - {"*=.", c_dot}, - {"*=:", c_label}, - {"[", c_test}, - {"*=break", c_brkcont}, - {"=builtin", c_builtin}, - {"*=continue", c_brkcont}, - {"*=eval", c_eval}, - {"*=exec", c_exec}, - {"*=exit", c_exitreturn}, - {"+false", c_label}, - {"*=return", c_exitreturn}, - {"*=set", c_set}, - {"*=shift", c_shift}, - {"=times", c_times}, - {"*=trap", c_trap}, - {"+=wait", c_wait}, - {"+read", c_read}, - {"test", c_test}, - {"+true", c_label}, - {"ulimit", c_ulimit}, - {"+umask", c_umask}, - {"*=unset", c_unset}, - {NULL, NULL} -}; diff --git a/c_test.c b/c_test.c deleted file mode 100644 index f452610..0000000 --- a/c_test.c +++ /dev/null @@ -1,626 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: c_test.c,v 1.10 2003/10/10 19:09:07 millert Exp $ */ - -/* - * test(1); version 7-like -- author Erik Baalbergen - * modified by Eric Gisin to be used as built-in. - * modified by Arnold Robbins to add SVR3 compatibility - * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket). - * modified by Michael Rendell to add Korn's [[ .. ]] expressions. - * modified by J.T. Conklin to add POSIX compatibility. - */ - -#include "sh.h" -#include "ksh_stat.h" -#include "c_test.h" - -__RCSID("$MirOS$"); - -/* test(1) accepts the following grammar: - oexpr ::= aexpr | aexpr "-o" oexpr ; - aexpr ::= nexpr | nexpr "-a" aexpr ; - nexpr ::= primary | "!" nexpr ; - primary ::= unary-operator operand - | operand binary-operator operand - | operand - | "(" oexpr ")" - ; - - unary-operator ::= "-a"|"-r"|"-w"|"-x"|"-e"|"-f"|"-d"|"-c"|"-b"|"-p"| - "-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"| - "-L"|"-h"|"-S"|"-H"; - - binary-operator ::= "="|"=="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"| - "-nt"|"-ot"|"-ef"| - "<"|">" # rules used for [[ .. ]] expressions - ; - operand ::= -*/ - -#define T_ERR_EXIT 2 /* POSIX says > 1 for errors */ - -struct t_op { - char op_text[4]; - Test_op op_num; -}; -static const struct t_op u_ops [] = { - {"-a", TO_FILAXST }, - {"-b", TO_FILBDEV }, - {"-c", TO_FILCDEV }, - {"-d", TO_FILID }, - {"-e", TO_FILEXST }, - {"-f", TO_FILREG }, - {"-G", TO_FILGID }, - {"-g", TO_FILSETG }, - {"-h", TO_FILSYM }, - {"-H", TO_FILCDF }, - {"-k", TO_FILSTCK }, - {"-L", TO_FILSYM }, - {"-n", TO_STNZE }, - {"-O", TO_FILUID }, - {"-o", TO_OPTION }, - {"-p", TO_FILFIFO }, - {"-r", TO_FILRD }, - {"-s", TO_FILGZ }, - {"-S", TO_FILSOCK }, - {"-t", TO_FILTT }, - {"-u", TO_FILSETU }, - {"-w", TO_FILWR }, - {"-x", TO_FILEX }, - {"-z", TO_STZER }, - {"", TO_NONOP } - }; -static const struct t_op b_ops [] = { - {"=", TO_STEQL }, - {"==", TO_STEQL }, - {"!=", TO_STNEQ }, - {"<", TO_STLT }, - {">", TO_STGT }, - {"-eq", TO_INTEQ }, - {"-ne", TO_INTNE }, - {"-gt", TO_INTGT }, - {"-ge", TO_INTGE }, - {"-lt", TO_INTLT }, - {"-le", TO_INTLE }, - {"-ef", TO_FILEQ }, - {"-nt", TO_FILNT }, - {"-ot", TO_FILOT }, - {"", TO_NONOP } - }; - -static int test_stat(const char *path, struct stat *statb); -static int test_eaccess(const char *path, int mode); -static int test_oexpr(Test_env *te, int do_eval); -static int test_aexpr(Test_env *te, int do_eval); -static int test_nexpr(Test_env *te, int do_eval); -static int test_primary(Test_env *te, int do_eval); -static int ptest_isa(Test_env *te, Test_meta meta); -static const char *ptest_getopnd(Test_env *te, Test_op op, int do_eval); -static int ptest_eval(Test_env *te, Test_op op, const char *opnd1, - const char *opnd2, int do_eval); -static void ptest_error(Test_env *te, int offset, const char *msg); - -int -c_test(char **wp) -{ - int argc; - int res; - Test_env te; - - te.flags = 0; - te.isa = ptest_isa; - te.getopnd = ptest_getopnd; - te.eval = ptest_eval; - te.error = ptest_error; - - for (argc = 0; wp[argc]; argc++) - ; - - if (strcmp(wp[0], "[") == 0) { - if (strcmp(wp[--argc], "]") != 0) { - bi_errorf("missing ]"); - return T_ERR_EXIT; - } - } - - te.pos.wp = wp + 1; - te.wp_end = wp + argc; - - /* - * Handle the special cases from POSIX.2, section 4.62.4. - * Implementation of all the rules isn't necessary since - * our parser does the right thing for the omitted steps. - */ - if (argc <= 5) { - char **owp = wp; - int invert = 0; - Test_op op; - const char *opnd1, *opnd2; - - while (--argc >= 0) { - if ((*te.isa)(&te, TM_END)) - return !0; - if (argc == 3) { - opnd1 = (*te.getopnd)(&te, TO_NONOP, 1); - if ((op = (Test_op) (*te.isa)(&te, TM_BINOP))) { - opnd2 = (*te.getopnd)(&te, op, 1); - res = (*te.eval)(&te, op, opnd1, opnd2, - 1); - if (te.flags & TEF_ERROR) - return T_ERR_EXIT; - if (invert & 1) - res = !res; - return !res; - } - /* back up to opnd1 */ - te.pos.wp--; - } - if (argc == 1) { - opnd1 = (*te.getopnd)(&te, TO_NONOP, 1); - /* Historically, -t by itself test if fd 1 - * is a file descriptor, but POSIX says its - * a string test... - */ - if (!Flag(FPOSIX) && strcmp(opnd1, "-t") == 0) - break; - res = (*te.eval)(&te, TO_STNZE, opnd1, - NULL, 1); - if (invert & 1) - res = !res; - return !res; - } - if ((*te.isa)(&te, TM_NOT)) { - invert++; - } else - break; - } - te.pos.wp = owp + 1; - } - - return test_parse(&te); -} - -/* - * Generic test routines. - */ - -Test_op -test_isop(Test_env *te, Test_meta meta, const char *s) -{ - char sc1; - const struct t_op *otab; - - otab = meta == TM_UNOP ? u_ops : b_ops; - if (*s) { - sc1 = s[1]; - for (; otab->op_text[0]; otab++) - if (sc1 == otab->op_text[1] - && strcmp(s, otab->op_text) == 0 - && ((te->flags & TEF_DBRACKET) - || (otab->op_num != TO_STLT - && otab->op_num != TO_STGT))) - return otab->op_num; - } - return TO_NONOP; -} - -int -test_eval(Test_env *te, Test_op op, const char *opnd1, const char *opnd2, int do_eval) -{ - int res; - int not; - struct stat b1, b2; - - if (!do_eval) - return 0; - - switch ((int) op) { - /* - * Unary Operators - */ - case TO_STNZE: /* -n */ - return *opnd1 != '\0'; - case TO_STZER: /* -z */ - return *opnd1 == '\0'; - case TO_OPTION: /* -o */ - if ((not = *opnd1 == '!')) - opnd1++; - if ((res = option(opnd1)) < 0) - res = 0; - else { - res = Flag(res); - if (not) - res = !res; - } - return res; - case TO_FILRD: /* -r */ - return test_eaccess(opnd1, R_OK) == 0; - case TO_FILWR: /* -w */ - return test_eaccess(opnd1, W_OK) == 0; - case TO_FILEX: /* -x */ - return test_eaccess(opnd1, X_OK) == 0; - case TO_FILAXST: /* -a */ - return test_stat(opnd1, &b1) == 0; - case TO_FILEXST: /* -e */ - /* at&t ksh does not appear to do the /dev/fd/ thing for - * this (unless the os itself handles it) - */ - return stat(opnd1, &b1) == 0; - case TO_FILREG: /* -r */ - return test_stat(opnd1, &b1) == 0 && S_ISREG(b1.st_mode); - case TO_FILID: /* -d */ - return test_stat(opnd1, &b1) == 0 && S_ISDIR(b1.st_mode); - case TO_FILCDEV: /* -c */ -#ifdef S_ISCHR - return test_stat(opnd1, &b1) == 0 && S_ISCHR(b1.st_mode); -#else - return 0; -#endif - case TO_FILBDEV: /* -b */ -#ifdef S_ISBLK - return test_stat(opnd1, &b1) == 0 && S_ISBLK(b1.st_mode); -#else - return 0; -#endif - case TO_FILFIFO: /* -p */ -#ifdef S_ISFIFO - return test_stat(opnd1, &b1) == 0 && S_ISFIFO(b1.st_mode); -#else - return 0; -#endif - case TO_FILSYM: /* -h -L */ -#ifdef S_ISLNK - return lstat(opnd1, &b1) == 0 && S_ISLNK(b1.st_mode); -#else - return 0; -#endif - case TO_FILSOCK: /* -S */ -#ifdef S_ISSOCK - return test_stat(opnd1, &b1) == 0 && S_ISSOCK(b1.st_mode); -#else - return 0; -#endif - case TO_FILCDF:/* -H HP context dependent files (directories) */ -#ifdef S_ISCDF - { - /* Append a + to filename and check to see if result is a - * setuid directory. CDF stuff in general is hookey, since - * it breaks for the following sequence: echo hi > foo+; - * mkdir foo; echo bye > foo/default; chmod u+s foo - * (foo+ refers to the file with hi in it, there is no way - * to get at the file with bye in it - please correct me if - * I'm wrong about this). - */ - int len = strlen(opnd1); - char *p = str_nsave(opnd1, len + 1, ATEMP); - - p[len++] = '+'; - p[len] = '\0'; - return stat(p, &b1) == 0 && S_ISCDF(b1.st_mode); - } -#else - return 0; -#endif - case TO_FILSETU: /* -u */ -#ifdef S_ISUID - return test_stat(opnd1, &b1) == 0 - && (b1.st_mode & S_ISUID) == S_ISUID; -#else - return 0; -#endif - case TO_FILSETG: /* -g */ -#ifdef S_ISGID - return test_stat(opnd1, &b1) == 0 - && (b1.st_mode & S_ISGID) == S_ISGID; -#else - return 0; -#endif - case TO_FILSTCK: /* -k */ - return test_stat(opnd1, &b1) == 0 - && (b1.st_mode & S_ISVTX) == S_ISVTX; - case TO_FILGZ: /* -s */ - return test_stat(opnd1, &b1) == 0 && b1.st_size > 0L; - case TO_FILTT: /* -t */ - if (opnd1 && !bi_getn(opnd1, &res)) { - te->flags |= TEF_ERROR; - res = 0; - } else { - /* generate error if in FPOSIX mode? */ - res = isatty(opnd1 ? res : 0); - } - return res; - case TO_FILUID: /* -O */ - return test_stat(opnd1, &b1) == 0 && b1.st_uid == ksheuid; - case TO_FILGID: /* -G */ - return test_stat(opnd1, &b1) == 0 && b1.st_gid == getegid(); - /* - * Binary Operators - */ - case TO_STEQL: /* = */ - if (te->flags & TEF_DBRACKET) - return gmatch(opnd1, opnd2, false); - return strcmp(opnd1, opnd2) == 0; - case TO_STNEQ: /* != */ - if (te->flags & TEF_DBRACKET) - return !gmatch(opnd1, opnd2, false); - return strcmp(opnd1, opnd2) != 0; - case TO_STLT: /* < */ - return strcmp(opnd1, opnd2) < 0; - case TO_STGT: /* > */ - return strcmp(opnd1, opnd2) > 0; - case TO_INTEQ: /* -eq */ - case TO_INTNE: /* -ne */ - case TO_INTGE: /* -ge */ - case TO_INTGT: /* -gt */ - case TO_INTLE: /* -le */ - case TO_INTLT: /* -lt */ - { - long v1, v2; - - if (!evaluate(opnd1, &v1, KSH_RETURN_ERROR) - || !evaluate(opnd2, &v2, KSH_RETURN_ERROR)) - { - /* error already printed.. */ - te->flags |= TEF_ERROR; - return 1; - } - switch ((int) op) { - case TO_INTEQ: - return v1 == v2; - case TO_INTNE: - return v1 != v2; - case TO_INTGE: - return v1 >= v2; - case TO_INTGT: - return v1 > v2; - case TO_INTLE: - return v1 <= v2; - case TO_INTLT: - return v1 < v2; - } - } - case TO_FILNT: /* -nt */ - { - int s2; - /* ksh88/ksh93 succeed if file2 can't be stated - * (subtly different from 'does not exist'). - */ - return stat(opnd1, &b1) == 0 - && (((s2 = stat(opnd2, &b2)) == 0 - && b1.st_mtime > b2.st_mtime) || s2 < 0); - } - case TO_FILOT: /* -ot */ - { - int s1; - /* ksh88/ksh93 succeed if file1 can't be stated - * (subtly different from 'does not exist'). - */ - return stat(opnd2, &b2) == 0 - && (((s1 = stat(opnd1, &b1)) == 0 - && b1.st_mtime < b2.st_mtime) || s1 < 0); - } - case TO_FILEQ: /* -ef */ - return stat (opnd1, &b1) == 0 && stat (opnd2, &b2) == 0 - && b1.st_dev == b2.st_dev - && b1.st_ino == b2.st_ino; - } - (*te->error)(te, 0, "internal error: unknown op"); - return 1; -} - -/* Nasty kludge to handle Korn's bizarre /dev/fd hack */ -static int -test_stat(const char *path, struct stat *statb) -{ -#if !defined(HAVE_DEV_FD) - int fd; - - if (strncmp(path, "/dev/fd/", 8) == 0 && getn(path + 8, &fd)) - return fstat(fd, statb); -#endif /* !HAVE_DEV_FD */ - - return stat(path, statb); -} - -/* Routine to handle Korn's /dev/fd hack, and to deal with X_OK on - * non-directories when running as root. - */ -static int -test_eaccess(const char *path, int mode) -{ - int res; - -#if !defined(HAVE_DEV_FD) - int fd; - - /* Note: doesn't handle //dev/fd, etc.. (this is ok) */ - if (strncmp(path, "/dev/fd/", 8) == 0 && getn(path + 8, &fd)) { - int flags; - - if ((flags = fcntl(fd, F_GETFL, 0)) < 0 - || (mode & X_OK) - || ((mode & W_OK) && (flags & O_ACCMODE) == O_RDONLY) - || ((mode & R_OK) && (flags & O_ACCMODE) == O_WRONLY)) - return -1; - return 0; - } -#endif /* !HAVE_DEV_FD */ - - res = eaccess(path, mode); - /* - * On most (all?) unixes, access() says everything is executable for - * root - avoid this on files by using stat(). - */ - if (res == 0 && ksheuid == 0 && (mode & X_OK)) { - struct stat statb; - - if (stat(path, &statb) < 0) - res = -1; - else if (S_ISDIR(statb.st_mode)) - res = 0; - else - res = (statb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)) - ? 0 : -1; - } - - return res; -} - -int -test_parse(Test_env *te) -{ - int res; - - res = test_oexpr(te, 1); - - if (!(te->flags & TEF_ERROR) && !(*te->isa)(te, TM_END)) - (*te->error)(te, 0, "unexpected operator/operand"); - - return (te->flags & TEF_ERROR) ? T_ERR_EXIT : !res; -} - -static int -test_oexpr(Test_env *te, int do_eval) -{ - int res; - - res = test_aexpr(te, do_eval); - if (res) - do_eval = 0; - if (!(te->flags & TEF_ERROR) && (*te->isa)(te, TM_OR)) - return test_oexpr(te, do_eval) || res; - return res; -} - -static int -test_aexpr(Test_env *te, int do_eval) -{ - int res; - - res = test_nexpr(te, do_eval); - if (!res) - do_eval = 0; - if (!(te->flags & TEF_ERROR) && (*te->isa)(te, TM_AND)) - return test_aexpr(te, do_eval) && res; - return res; -} - -static int -test_nexpr(Test_env *te, int do_eval) -{ - if (!(te->flags & TEF_ERROR) && (*te->isa)(te, TM_NOT)) - return !test_nexpr(te, do_eval); - return test_primary(te, do_eval); -} - -static int -test_primary(Test_env *te, int do_eval) -{ - const char *opnd1, *opnd2; - int res; - Test_op op; - - if (te->flags & TEF_ERROR) - return 0; - if ((*te->isa)(te, TM_OPAREN)) { - res = test_oexpr(te, do_eval); - if (te->flags & TEF_ERROR) - return 0; - if (!(*te->isa)(te, TM_CPAREN)) { - (*te->error)(te, 0, "missing closing paren"); - return 0; - } - return res; - } - if ((op = (Test_op) (*te->isa)(te, TM_UNOP))) { - /* unary expression */ - opnd1 = (*te->getopnd)(te, op, do_eval); - if (!opnd1) { - (*te->error)(te, -1, "missing argument"); - return 0; - } - - return (*te->eval)(te, op, opnd1, NULL, do_eval); - } - opnd1 = (*te->getopnd)(te, TO_NONOP, do_eval); - if (!opnd1) { - (*te->error)(te, 0, "expression expected"); - return 0; - } - if ((op = (Test_op) (*te->isa)(te, TM_BINOP))) { - /* binary expression */ - opnd2 = (*te->getopnd)(te, op, do_eval); - if (!opnd2) { - (*te->error)(te, -1, "missing second argument"); - return 0; - } - - return (*te->eval)(te, op, opnd1, opnd2, do_eval); - } - if (te->flags & TEF_DBRACKET) { - (*te->error)(te, -1, "missing expression operator"); - return 0; - } - return (*te->eval)(te, TO_STNZE, opnd1, NULL, do_eval); -} - -/* - * Plain test (test and [ .. ]) specific routines. - */ - -/* Test if the current token is a whatever. Accepts the current token if - * it is. Returns 0 if it is not, non-zero if it is (in the case of - * TM_UNOP and TM_BINOP, the returned value is a Test_op). - */ -static int -ptest_isa(Test_env *te, Test_meta meta) -{ - /* Order important - indexed by Test_meta values */ - static const char *const tokens[] = { - "-o", "-a", "!", "(", ")" - }; - int ret; - - if (te->pos.wp >= te->wp_end) - return meta == TM_END; - - if (meta == TM_UNOP || meta == TM_BINOP) - ret = (int) test_isop(te, meta, *te->pos.wp); - else if (meta == TM_END) - ret = 0; - else - ret = strcmp(*te->pos.wp, tokens[(int) meta]) == 0; - - /* Accept the token? */ - if (ret) - te->pos.wp++; - - return ret; -} - -static const char * -ptest_getopnd(Test_env *te, Test_op op, int do_eval GCC_FUNC_ATTR(unused)) -{ - if (te->pos.wp >= te->wp_end) - return op == TO_FILTT ? "1" : NULL; - return *te->pos.wp++; -} - -static int -ptest_eval(Test_env *te, Test_op op, const char *opnd1, const char *opnd2, int do_eval) -{ - return test_eval(te, op, opnd1, opnd2, do_eval); -} - -static void -ptest_error(Test_env *te, int offset, const char *msg) -{ - const char *op = te->pos.wp + offset >= te->wp_end ? - NULL : te->pos.wp[offset]; - - te->flags |= TEF_ERROR; - if (op) - bi_errorf("%s: %s", op, msg); - else - bi_errorf("%s", msg); -} diff --git a/c_test.h b/c_test.h deleted file mode 100644 index 1ab7a54..0000000 --- a/c_test.h +++ /dev/null @@ -1,61 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: c_test.h,v 1.2 2003/10/22 07:40:38 jmc Exp $ */ - -#ifndef C_TEST_H -#define C_TEST_H - -/* Various types of operations. Keeping things grouped nicely - * (unary,binary) makes switch() statements more efficient. - */ -enum Test_op { - TO_NONOP = 0, /* non-operator */ - /* unary operators */ - TO_STNZE, TO_STZER, TO_OPTION, - TO_FILAXST, - TO_FILEXST, - TO_FILREG, TO_FILBDEV, TO_FILCDEV, TO_FILSYM, TO_FILFIFO, TO_FILSOCK, - TO_FILCDF, TO_FILID, TO_FILGID, TO_FILSETG, TO_FILSTCK, TO_FILUID, - TO_FILRD, TO_FILGZ, TO_FILTT, TO_FILSETU, TO_FILWR, TO_FILEX, - /* binary operators */ - TO_STEQL, TO_STNEQ, TO_STLT, TO_STGT, TO_INTEQ, TO_INTNE, TO_INTGT, - TO_INTGE, TO_INTLT, TO_INTLE, TO_FILEQ, TO_FILNT, TO_FILOT -}; -typedef enum Test_op Test_op; - -/* Used by Test_env.isa() (order important - used to index *_tokens[] arrays) */ -enum Test_meta { - TM_OR, /* -o or || */ - TM_AND, /* -a or && */ - TM_NOT, /* ! */ - TM_OPAREN, /* ( */ - TM_CPAREN, /* ) */ - TM_UNOP, /* unary operator */ - TM_BINOP, /* binary operator */ - TM_END /* end of input */ -}; -typedef enum Test_meta Test_meta; - -#define TEF_ERROR BIT(0) /* set if we've hit an error */ -#define TEF_DBRACKET BIT(1) /* set if [[ .. ]] test */ - -typedef struct test_env Test_env; -struct test_env { - int flags; /* TEF_* */ - union { - char **wp; /* used by ptest_* */ - XPtrV *av; /* used by dbtestp_* */ - } pos; - char **wp_end; /* used by ptest_* */ - int (*isa)(Test_env *te, Test_meta meta); - const char *(*getopnd)(Test_env *te, Test_op op, int do_eval); - int (*eval)(Test_env *te, Test_op op, const char *opnd1, - const char *opnd2, int do_eval); - void (*error)(Test_env *te, int offset, const char *msg); -}; - -Test_op test_isop(Test_env *te, Test_meta meta, const char *s); -int test_eval(Test_env *te, Test_op op, const char *opnd1, - const char *opnd2, int do_eval); -int test_parse(Test_env *te); - -#endif /* ndef C_TEST_H */ diff --git a/c_ulimit.c b/c_ulimit.c deleted file mode 100644 index e2db217..0000000 --- a/c_ulimit.c +++ /dev/null @@ -1,284 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: c_ulimit.c,v 1.10 2003/10/22 07:40:38 jmc Exp $ */ - -/* - ulimit -- handle "ulimit" builtin - - Reworked to use getrusage() and ulimit() at once (as needed on - some schizophrenic systems, eg, HP-UX 9.01), made argument parsing - conform to at&t ksh, added autoconf support. Michael Rendell, May, '94 - - Eric Gisin, September 1988 - Adapted to PD KornShell. Removed AT&T code. - - last edit: 06-Jun-1987 D A Gwyn - - This started out as the BRL UNIX System V system call emulation - for 4.nBSD, and was later extended by Doug Kingston to handle - the extended 4.nBSD resource limits. It now includes the code - that was originally under case SYSULIMIT in source file "xec.c". -*/ - -#include "sh.h" -#include -#ifdef HAVE_SYS_RESOURCE_H -# include -#endif /* HAVE_SYS_RESOURCE_H */ -#ifdef HAVE_ULIMIT_H -# include -#else /* HAVE_ULIMIT_H */ -# ifdef HAVE_ULIMIT -extern long ulimit(); -# endif /* HAVE_ULIMIT */ -#endif /* HAVE_ULIMIT_H */ - -__RCSID("$MirOS$"); - -#define SOFT 0x1 -#define HARD 0x2 - -#ifdef RLIM_INFINITY -# define KSH_RLIM_INFINITY RLIM_INFINITY -#else -# define KSH_RLIM_INFINITY ((rlim_t) 1 << (sizeof(rlim_t) * 8 - 1) - 1) -#endif /* RLIM_INFINITY */ - -int -c_ulimit(char **wp) -{ - static const struct limits { - const char *name; - enum { RLIMIT, ULIMIT } which; - int gcmd; /* get command */ - int scmd; /* set command (or -1, if no set command) */ - int factor; /* multiply by to get rlim_{cur,max} values */ - char option; - } limits[] = { - /* Do not use options -H, -S or -a */ -#ifdef RLIMIT_CPU - { "time(cpu-seconds)", RLIMIT, RLIMIT_CPU, RLIMIT_CPU, 1, 't' }, -#endif -#ifdef RLIMIT_TIME - { "humantime(seconds)", RLIMIT, RLIMIT_TIME, RLIMIT_TIME, 1, 'T' }, -#endif -#ifdef RLIMIT_FSIZE - { "file(blocks)", RLIMIT, RLIMIT_FSIZE, RLIMIT_FSIZE, 512, 'f' }, -#else /* RLIMIT_FSIZE */ -# ifdef UL_GETFSIZE /* x/open */ - { "file(blocks)", ULIMIT, UL_GETFSIZE, UL_SETFSIZE, 1, 'f' }, -# else /* UL_GETFSIZE */ -# ifdef UL_GFILLIM /* svr4/xenix */ - { "file(blocks)", ULIMIT, UL_GFILLIM, UL_SFILLIM, 1, 'f' }, -# else /* UL_GFILLIM */ - { "file(blocks)", ULIMIT, 1, 2, 1, 'f' }, -# endif /* UL_GFILLIM */ -# endif /* UL_GETFSIZE */ -#endif /* RLIMIT_FSIZE */ -#ifdef RLIMIT_CORE - { "coredump(blocks)", RLIMIT, RLIMIT_CORE, RLIMIT_CORE, 512, 'c' }, -#endif -#ifdef RLIMIT_DATA - { "data(KiB)", RLIMIT, RLIMIT_DATA, RLIMIT_DATA, 1024, 'd' }, -#endif -#ifdef RLIMIT_STACK - { "stack(KiB)", RLIMIT, RLIMIT_STACK, RLIMIT_STACK, 1024, 's' }, -#endif -#ifdef RLIMIT_MEMLOCK - { "lockedmem(KiB)", RLIMIT, RLIMIT_MEMLOCK, RLIMIT_MEMLOCK, 1024, 'l' }, -#endif -#ifdef RLIMIT_RSS - { "memory(KiB)", RLIMIT, RLIMIT_RSS, RLIMIT_RSS, 1024, 'm' }, -#endif -#ifdef RLIMIT_NOFILE - { "nofiles(descriptors)", RLIMIT, RLIMIT_NOFILE, RLIMIT_NOFILE, 1, 'n' }, -#else /* RLIMIT_NOFILE */ -# ifdef UL_GDESLIM /* svr4/xenix */ - { "nofiles(descriptors)", ULIMIT, UL_GDESLIM, -1, 1, 'n' }, -# endif /* UL_GDESLIM */ -#endif /* RLIMIT_NOFILE */ -#ifdef RLIMIT_NPROC - { "processes", RLIMIT, RLIMIT_NPROC, RLIMIT_NPROC, 1, 'p' }, -#endif -#ifdef RLIMIT_VMEM - { "vmemory(KiB)", RLIMIT, RLIMIT_VMEM, RLIMIT_VMEM, 1024, 'v' }, -#else /* RLIMIT_VMEM */ - /* These are not quite right - really should subtract etext or something */ -# ifdef UL_GMEMLIM /* svr4/xenix */ - { "vmemory(maxaddr)", ULIMIT, UL_GMEMLIM, -1, 1, 'v' }, -# else /* UL_GMEMLIM */ -# ifdef UL_GETBREAK /* osf/1 */ - { "vmemory(maxaddr)", ULIMIT, UL_GETBREAK, -1, 1, 'v' }, -# else /* UL_GETBREAK */ -# ifdef UL_GETMAXBRK /* hpux */ - { "vmemory(maxaddr)", ULIMIT, UL_GETMAXBRK, -1, 1, 'v' }, -# endif /* UL_GETMAXBRK */ -# endif /* UL_GETBREAK */ -# endif /* UL_GMEMLIM */ -#endif /* RLIMIT_VMEM */ -#ifdef RLIMIT_SWAP - { "swap(KiB)", RLIMIT, RLIMIT_SWAP, RLIMIT_SWAP, 1024, 'w' }, -#endif - { NULL, RLIMIT, 0, 0, 0, 0 } - }; - static char options[3 + NELEM(limits)]; - rlim_t UNINITIALIZED(val); - int how = SOFT | HARD; - const struct limits *l; - int set, all = 0; - int optc, what; -#ifdef HAVE_SETRLIMIT - struct rlimit limit; -#endif /* HAVE_SETRLIMIT */ - - if (!options[0]) { - /* build options string on first call - yuck */ - char *p = options; - - *p++ = 'H'; *p++ = 'S'; *p++ = 'a'; - for (l = limits; l->name; l++) - *p++ = l->option; - *p = '\0'; - } - what = 'f'; - while ((optc = ksh_getopt(wp, &builtin_opt, options)) != EOF) - switch (optc) { - case 'H': - how = HARD; - break; - case 'S': - how = SOFT; - break; - case 'a': - all = 1; - break; - case '?': - return 1; - default: - what = optc; - } - - for (l = limits; l->name && l->option != what; l++) - ; - if (!l->name) { - internal_errorf(0, "ulimit: %c", what); - return 1; - } - - wp += builtin_opt.optind; - set = *wp ? 1 : 0; - if (set) { - if (all || wp[1]) { - bi_errorf("too many arguments"); - return 1; - } - if (strcmp(wp[0], "unlimited") == 0) - val = KSH_RLIM_INFINITY; - else { - long rval; - - if (!evaluate(wp[0], &rval, KSH_RETURN_ERROR)) - return 1; - /* Avoid problems caused by typos that - * evaluate misses due to evaluating unset - * parameters to 0... - * If this causes problems, will have to - * add parameter to evaluate() to control - * if unset params are 0 or an error. - */ - if (!rval && !digit(wp[0][0])) { - bi_errorf("invalid limit: %s", wp[0]); - return 1; - } - val = rval * l->factor; - } - } - if (all) { - for (l = limits; l->name; l++) { -#ifdef HAVE_SETRLIMIT - if (l->which == RLIMIT) { - getrlimit(l->gcmd, &limit); - if (how & SOFT) - val = limit.rlim_cur; - else if (how & HARD) - val = limit.rlim_max; - } -#ifdef HAVE_ULIMIT - else -#endif -#endif /* HAVE_SETRLIMIT */ -#ifdef HAVE_ULIMIT - { - val = ulimit(l->gcmd, (rlim_t) 0); - } -#else /* HAVE_ULIMIT */ - ; -#endif /* HAVE_ULIMIT */ - shprintf("%-20s ", l->name); -#ifdef RLIM_INFINITY - if (val == RLIM_INFINITY) - shprintf("unlimited\n"); - else -#endif /* RLIM_INFINITY */ - { - val /= l->factor; - shprintf("%ld\n", (long) val); - } - } - return 0; - } -#ifdef HAVE_SETRLIMIT - if (l->which == RLIMIT) { - getrlimit(l->gcmd, &limit); - if (set) { - if (how & SOFT) - limit.rlim_cur = val; - if (how & HARD) - limit.rlim_max = val; - if (setrlimit(l->scmd, &limit) < 0) { - if (errno == EPERM) - bi_errorf("exceeds allowable limit"); - else - bi_errorf("bad limit: %s", - strerror(errno)); - return 1; - } - } else { - if (how & SOFT) - val = limit.rlim_cur; - else if (how & HARD) - val = limit.rlim_max; - } - } -#ifdef HAVE_ULIMIT - else -#endif -#endif /* HAVE_SETRLIMIT */ -#ifdef HAVE_ULIMIT - { - if (set) { - if (l->scmd == -1) { - bi_errorf("can't change limit"); - return 1; - } else if (ulimit(l->scmd, val) < 0) { - bi_errorf("bad limit: %s", strerror(errno)); - return 1; - } - } else - val = ulimit(l->gcmd, (rlim_t) 0); - } -#else /* HAVE_ULIMIT */ - ; -#endif /* HAVE_ULIMIT */ - if (!set) { -#ifdef RLIM_INFINITY - if (val == RLIM_INFINITY) - shprintf("unlimited\n"); - else -#endif /* RLIM_INFINITY */ - { - val /= l->factor; - shprintf("%ld\n", (long) val); - } - } - return 0; -} diff --git a/conf-end.h b/conf-end.h deleted file mode 100644 index 969adf8..0000000 --- a/conf-end.h +++ /dev/null @@ -1,82 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: conf-end.h,v 1.2 1996/08/25 12:37:58 downsj Exp $ */ - -#ifndef CONF_END_H -#define CONF_END_H - -/* Include job control? */ -#define JOBS 1 - -/* Include complex history? */ -#define COMPLEX_HISTORY - -/* Specify default $ENV? */ -/* #undef DEFAULT_ENV */ - -/* - * The above are defined for mirbsdksh via external - * means, such as this header ;-) - * End of configuration stuff for PD ksh. - */ - -#if SIZEOF_INT < 4 -# error "int cannot hold 32 bit" -#endif - -/* - * if you don't have mmap() you can't use Peter Collinson's history - * mechanism. If that is the case, then define EASY_HISTORY - */ -#if !defined(COMPLEX_HISTORY) || !defined(HAVE_MMAP) || !defined(HAVE_FLOCK) -# undef COMPLEX_HISTORY -# define EASY_HISTORY /* sjg's trivial history file */ -#endif - -/* Can we safely catch sigchld and wait for processes? */ -#if defined(HAVE_WAITPID) || defined(HAVE_WAIT3) -# define JOB_SIGS -#endif - -#if !defined(JOB_SIGS) || !(defined(POSIX_PGRP) || defined(BSD_PGRP)) -# undef JOBS /* if no JOB_SIGS, no job control support */ -#endif - -#ifdef HAVE_SYS_PARAM_H -# include -#else -# ifdef HAVE_SYS_TYPES_H -# include -# endif /* HAVE_SYS_TYPES_H */ -#endif /* HAVE_SYS_PARAM_H */ - -#ifdef HAVE_STDINT_H -# include -#endif - -#ifdef HAVE_GCC_FUNC_ATTR -# define GCC_FUNC_ATTR(x) __attribute__((x)) -# define GCC_FUNC_ATTR2(x,y) __attribute__((x,y)) -#else -# define GCC_FUNC_ATTR(x) -# define GCC_FUNC_ATTR2(x,y) -#endif /* HAVE_GCC_FUNC_ATTR */ - -#ifdef HAVE_STDBOOL_H -#include -#else -#if defined(__GNUC__) && __GNUC__ >= 3 -/* Support for _C99: type _Bool is already built-in. */ -#define false 0 -#define true 1 -#else -typedef enum { - false = 0, - true = 1 -} _Bool; -#define false false -#define true true -#endif -#define bool _Bool -#endif - -#endif /* ndef CONF_END_H */ diff --git a/config.h b/config.h deleted file mode 100644 index 6c16fd1..0000000 --- a/config.h +++ /dev/null @@ -1,322 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: config.h,v 1.9 2003/10/22 07:40:38 jmc Exp $ */ - -/* - * This is mirbsdksh "config.h" for both MirOS systems, on which it - * is statically generated by the operating system maintainers, and - * for the portable mirbsdksh, where it is being fed to and genera- - * ted by the configure script. - */ - -#ifndef CONFIG_H -#define CONFIG_H - -/* Define if on AIX 3. - System headers sometimes define this. - We just want to avoid a redefinition error message. */ -#ifndef _ALL_SOURCE -/* #undef _ALL_SOURCE */ -#endif - -/* Define if the closedir function returns void instead of int. */ -/* #undef CLOSEDIR_VOID */ - -/* Define to empty if the keyword does not work. */ -/* #undef const */ - -/* Define to 'int' if doesn't define. */ -/* #undef gid_t */ - -/* Define if you have a working 'mmap' system call. */ -#define HAVE_MMAP 1 - -/* Define if your struct stat has st_rdev. */ -#define HAVE_ST_RDEV 1 - -/* Define if you have . */ -#define HAVE_UNISTD_H 1 - -/* Define if on MINIX. */ -/* #undef _MINIX */ - -/* Define to 'int' if doesn't define. */ -/* #undef mode_t */ - -/* Define to 'long' if doesn't define. */ -/* #undef off_t */ - -/* Define to 'int' if doesn't define. */ -/* #undef pid_t */ - -/* Define if the system does not provide POSIX.1 features except - with this defined. */ -/* #undef _POSIX_1_SOURCE */ - -/* Define if you need to in order for stat and other things to work. */ -/* #undef _POSIX_SOURCE */ - -/* Define as the return type of signal handlers (int or void). */ -#define RETSIGTYPE void - -/* Define if the 'S_IS*' macros in do not work properly. */ -/* #undef STAT_MACROS_BROKEN */ - -/* Define to 'int' if doesn't define. */ -/* #undef uid_t */ - -/* Define if the closedir function returns void instead of int. */ -/* #undef VOID_CLOSEDIR */ - -/* Define if your kernel doesn't handle scripts starting with #! */ -/* #undef SHARPBANG */ - -/* Define if dup2() preserves the close-on-exec flag (ultrix does this) */ -/* #undef DUP2_BROKEN */ - -/* Define as the return value of signal handlers (0 or ). */ -#define RETSIGVAL - -/* Define if you have bsd versions of the setpgrp() and getpgrp() routines */ -/* #undef BSD_PGRP */ - -/* Define if you have POSIX versions of the setpgid() and getpgrp() routines */ -#define POSIX_PGRP 1 - -/* Define if you have sysV versions of the setpgrp() and getpgrp() routines */ -/* #undef SYSV_PGRP */ - -/* Define if you don't have setpgrp(), setpgid() or getpgrp() routines */ -/* #undef NO_PGRP */ - -/* Define to char if your compiler doesn't like the void keyword */ -/* #undef void */ - -/* Define to nothing if compiler doesn't like the volatile keyword */ -/* #undef volatile */ - -/* Define if C compiler groks __attribute__((...)) (const, noreturn, format) */ -#define HAVE_GCC_FUNC_ATTR 1 - -/* Define to 32-bit signed integer type if doesn't define */ -/* #undef clock_t */ - -/* Define to the type of struct rlimit fields if the rlim_t type is missing */ -/* #undef rlim_t */ - -/* Define to 'unsigned' if doesn't define */ -/* #undef sigset_t */ - -/* Define if you have a sane header file */ -#define HAVE_TERMIOS_H 1 - -/* Define if you have a memset() function in your C library */ -#define HAVE_MEMSET 1 - -/* Define if you have a memmove() function in your C library */ -#define HAVE_MEMMOVE 1 - -/* Define if you have a bcopy() function in your C library */ -/* #undef HAVE_BCOPY */ - -/* Define if you have a lstat() function in your C library */ -#define HAVE_LSTAT 1 - -/* Define if you have a sane header file */ -/* #undef HAVE_TERMIO_H */ - -/* Define if opendir() will open non-directory files */ -/* #undef OPENDIR_DOES_NONDIR */ - -/* Define if the pgrp of setpgrp() can't be the pid of a zombie process */ -/* #undef NEED_PGRP_SYNC */ - -/* Define if you arg running SCO unix */ -/* #undef OS_SCO */ - -/* Define if you arg running ISC unix */ -/* #undef OS_ISC */ - -/* Define if you have a POSIX.1 compatible */ -#define POSIX_SYS_WAIT 1 - -/* Define if your OS maps references to /dev/fd/n to file descriptor n */ -#define HAVE_DEV_FD 1 - -/* Default PATH */ -#define DEFAULT_PATH "/bin:/usr/bin:/sbin:/usr/sbin" - -/* Define if your C library's getwd/getcwd function dumps core in unreadable - * directories. */ -/* #undef HPUX_GETWD_BUG */ - -/* The number of bytes in a int. */ -#define SIZEOF_INT 4 - -/* The number of bytes in a long. */ -#define SIZEOF_LONG 4 - -/* Define if you have the _setjmp function. */ -/* #undef HAVE__SETJMP */ - -/* Define if you have the arc4random function. */ -#define HAVE_ARC4RANDOM 1 - -/* Define if you have the arc4random_addrandom function. */ -#define HAVE_ARC4RANDOM_ADDRANDOM 1 - -/* Define if you have the arc4random_push function. */ -#define HAVE_ARC4RANDOM_PUSH 1 - -/* Define if you have the break function. */ -/* #undef HAVE_BREAK */ - -/* Define if you have the confstr function. */ -#define HAVE_CONFSTR 1 - -/* Define if you have the dup2 function. */ -#define HAVE_DUP2 1 - -/* Define if you have the flock function. */ -#define HAVE_FLOCK 1 - -/* Define if you have the getcwd function. */ -#define HAVE_GETCWD 1 - -/* Define if you have the getgroups function. */ -#define HAVE_GETGROUPS 1 - -/* Define if you have the getpagesize function. */ -#define HAVE_GETPAGESIZE 1 - -/* Define if you have the getrusage function. */ -#define HAVE_GETRUSAGE 1 - -/* Define if you have the getwd function. */ -#define HAVE_GETWD 1 - -/* Define if you have the killpg function. */ -#define HAVE_KILLPG 1 - -/* Define if you have the mkstemp function. */ -#define HAVE_MKSTEMP 1 - -/* Define if you have the nice function. */ -#define HAVE_NICE 1 - -/* Define if you have the random function. */ -#define HAVE_RANDOM 1 - -/* Define if you have the revoke function. */ -#define HAVE_REVOKE 1 - -/* Define if you have the setrlimit function. */ -#define HAVE_SETRLIMIT 1 - -/* Define if you have the setsid function. */ -#define HAVE_SETSID 1 - -/* Define if you have the sigsetjmp function. */ -#define HAVE_SIGSETJMP 1 - -/* Define if you have the srandom function. */ -#define HAVE_SRANDOM 1 - -/* Define if you have the strcasecmp function. */ -#define HAVE_STRCASECMP 1 - -/* Define if you have the strerror function. */ -#define HAVE_STRERROR 1 - -/* Define if you have the strlcat function. */ -#define HAVE_STRLCAT 1 - -/* Define if you have the strlcpy function. */ -#define HAVE_STRLCPY 1 - -/* Define if you have the strstr function. */ -#define HAVE_STRSTR 1 - -/* Define if you have the sysconf function. */ -#define HAVE_SYSCONF 1 - -/* Define if you have the tcsetpgrp function. */ -#define HAVE_TCSETPGRP 1 - -/* Define if you have the ulimit function. */ -/* #undef HAVE_ULIMIT */ - -/* Define if you have the valloc function. */ -#define HAVE_VALLOC 1 - -/* Define if you have the wait3 function. */ -#define HAVE_WAIT3 1 - -/* Define if you have the waitpid function. */ -#define HAVE_WAITPID 1 - -/* Define if you have the header file. */ -#define HAVE_DIRENT_H 1 - -/* Define if you have the header file. */ -#define HAVE_FCNTL_H 1 - -/* Define if you have the header file. */ -#define HAVE_LIMITS_H 1 - -/* Define if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* Define if you have the header file. */ -/* #undef HAVE_NDIR_H */ - -/* Define if you have the header file. */ -#define HAVE_PATHS_H 1 - -/* Define if you have the header file. */ -#define HAVE_STDBOOL_H 1 - -/* Define if you have the header file. */ -#define HAVE_STDDEF_H 1 - -/* Define if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define if you have the header file. */ -/* #undef HAVE_SYS_DIR_H */ - -/* Define if you have the header file. */ -/* #undef HAVE_SYS_NDIR_H */ - -/* Define if you have the header file. */ -#define HAVE_SYS_PARAM_H 1 - -/* Define if you have the header file. */ -#define HAVE_SYS_RESOURCE_H 1 - -/* Define if you have the header file. */ -#define HAVE_SYS_TIME_H 1 - -/* Define if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define if you have the header file. */ -#define HAVE_SYS_WAIT_H 1 - -/* Define if you have the header file. */ -/* #undef HAVE_ULIMIT_H */ - -/* Define if you have the header file. */ -/* #undef HAVE_VALUES_H */ - -/* Need to use a separate file to keep the configure script from commenting - * out the undefs.... - */ -#include "conf-end.h" - -#endif /* CONFIG_H */ diff --git a/edit.c b/edit.c deleted file mode 100644 index 6eb04e4..0000000 --- a/edit.c +++ /dev/null @@ -1,955 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: edit.c,v 1.23 2004/12/18 22:12:23 millert Exp $ */ - -/* - * Command line editing - common code - * - */ - -#include "config.h" - -#include "sh.h" -#include "tty.h" -#define EXTERN -#include "edit.h" -#undef EXTERN -#ifdef OS_SCO /* SCO Unix 3.2v4.1 */ -# include /* needed for */ -# include /* needed for struct winsize */ -#endif /* OS_SCO */ -#include -#include -#include "ksh_stat.h" - -__RCSID("$MirOS$"); - -#if defined(TIOCGWINSZ) -static RETSIGTYPE x_sigwinch(int sig); -static volatile sig_atomic_t got_sigwinch; -static void check_sigwinch(void); -#endif /* TIOCGWINSZ */ - -#if !defined(_POSIX_VDISABLE) || (_POSIX_VDISABLE < 0) -#define _POSIX_VDISABLE 0377 -#endif - -static int x_file_glob(int flags, const char *str, int slen, - char ***wordsp); -static int x_command_glob(int flags, const char *str, int slen, - char ***wordsp); -static int x_locate_word(const char *buf, int buflen, int pos, - int *startp, int *is_command); - -/* Called from main */ -void -x_init(void) -{ - /* set to -2 to force initial binding */ - edchars.erase = edchars.kill = edchars.intr = edchars.quit - = edchars.eof = -2; - /* default value for deficient systems */ - edchars.werase = 027; /* ^W */ - -#ifdef TIOCGWINSZ -# ifdef SIGWINCH - if (setsig(&sigtraps[SIGWINCH], x_sigwinch, SS_RESTORE_ORIG|SS_SHTRAP)) - sigtraps[SIGWINCH].flags |= TF_SHELL_USES; -# endif /* SIGWINCH */ - got_sigwinch = 1; /* force initial check */ - check_sigwinch(); -#endif /* TIOCGWINSZ */ - - x_init_emacs(); -} - -#if defined(TIOCGWINSZ) -static RETSIGTYPE -x_sigwinch(int sig GCC_FUNC_ATTR(unused)) -{ - got_sigwinch = 1; - return RETSIGVAL; -} - -static void -check_sigwinch(void) -{ - if (got_sigwinch) { - struct winsize ws; - - got_sigwinch = 0; - if (procpid == kshpid && ioctl(tty_fd, TIOCGWINSZ, &ws) >= 0) { - struct tbl *vp; - - /* Do NOT export COLUMNS/LINES. Many applications - * check COLUMNS/LINES before checking ws.ws_col/row, - * so if the app is started with C/L in the environ - * and the window is then resized, the app won't - * see the change cause the environ doesn't change. - */ - if (ws.ws_col) { - x_cols = ws.ws_col < MIN_COLS ? MIN_COLS - : ws.ws_col; - - if ((vp = typeset("COLUMNS", 0, 0, 0, 0))) - setint(vp, (long) ws.ws_col); - } - if (ws.ws_row - && (vp = typeset("LINES", 0, 0, 0, 0))) - setint(vp, (long) ws.ws_row); - } - } -} -#endif /* TIOCGWINSZ */ - -/* - * read an edited command line - */ -int -x_read(char *buf, size_t len) -{ - int i; - -#if defined(TIOCGWINSZ) - if (got_sigwinch) - check_sigwinch(); -#endif /* TIOCGWINSZ */ - - x_mode(true); - if (Flag(FEMACS) || Flag(FGMACS)) - i = x_emacs(buf, len); - else if (Flag(FVI)) - i = x_vi(buf, len); - else - i = -1; /* internal error */ - x_mode(false); - return i; -} - -/* tty I/O */ - -int -x_getc(void) -{ - char c; - int n; - - while ((n = blocking_read(0, &c, 1)) < 0 && errno == EINTR) - if (trap) { - x_mode(false); - runtraps(0); - x_mode(true); - } - if (n != 1) - return -1; - return (int) (unsigned char) c; -} - -void -x_flush(void) -{ - shf_flush(shl_out); -} - -void -x_putc(int c) -{ - shf_putc(c, shl_out); -} - -void -x_puts(const char *s) -{ - while (*s != 0) - shf_putc(*s++, shl_out); -} - -bool -x_mode(bool onoff) -{ - static bool x_cur_mode; - bool prev; - - if (x_cur_mode == onoff) - return x_cur_mode; - prev = x_cur_mode; - x_cur_mode = onoff; - - if (onoff) { - struct termios cb; - X_chars oldchars; - - oldchars = edchars; - cb = tty_state; - -#if defined(HAVE_TERMIOS_H) || defined(HAVE_TERMIO_H) - edchars.erase = cb.c_cc[VERASE]; - edchars.kill = cb.c_cc[VKILL]; - edchars.intr = cb.c_cc[VINTR]; - edchars.quit = cb.c_cc[VQUIT]; - edchars.eof = cb.c_cc[VEOF]; -# ifdef VWERASE - edchars.werase = cb.c_cc[VWERASE]; -# endif -# ifdef _CRAY2 /* brain-damaged terminal handler */ - cb.c_lflag &= ~(ICANON|ECHO); - /* rely on print routine to map '\n' to CR,LF */ -# else - cb.c_iflag &= ~(INLCR|ICRNL); -# ifdef _BSD_SYSV /* need to force CBREAK instead of RAW (need CRMOD on output) */ - cb.c_lflag &= ~(ICANON|ECHO); -# else - cb.c_lflag &= ~(ISIG|ICANON|ECHO); -# endif -# ifdef VLNEXT - /* osf/1 processes lnext when ~icanon */ - cb.c_cc[VLNEXT] = _POSIX_VDISABLE; -# endif /* VLNEXT */ -# ifdef VDISCARD - /* sunos 4.1.x & osf/1 processes discard(flush) when ~icanon */ - cb.c_cc[VDISCARD] = _POSIX_VDISABLE; -# endif /* VDISCARD */ - cb.c_cc[VTIME] = 0; - cb.c_cc[VMIN] = 1; -# endif /* _CRAY2 */ -#else - /* Assume BSD tty stuff. */ - edchars.erase = cb.sgttyb.sg_erase; - edchars.kill = cb.sgttyb.sg_kill; - cb.sgttyb.sg_flags &= ~ECHO; - cb.sgttyb.sg_flags |= CBREAK; -# ifdef TIOCGATC - edchars.intr = cb.lchars.tc_intrc; - edchars.quit = cb.lchars.tc_quitc; - edchars.eof = cb.lchars.tc_eofc; - edchars.werase = cb.lchars.tc_werasc; - cb.lchars.tc_suspc = -1; - cb.lchars.tc_dsuspc = -1; - cb.lchars.tc_lnextc = -1; - cb.lchars.tc_statc = -1; - cb.lchars.tc_intrc = -1; - cb.lchars.tc_quitc = -1; - cb.lchars.tc_rprntc = -1; -# else - edchars.intr = cb.tchars.t_intrc; - edchars.quit = cb.tchars.t_quitc; - edchars.eof = cb.tchars.t_eofc; - cb.tchars.t_intrc = -1; - cb.tchars.t_quitc = -1; -# ifdef TIOCGLTC - edchars.werase = cb.ltchars.t_werasc; - cb.ltchars.t_suspc = -1; - cb.ltchars.t_dsuspc = -1; - cb.ltchars.t_lnextc = -1; - cb.ltchars.t_rprntc = -1; -# endif -# endif /* TIOCGATC */ -#endif /* HAVE_TERMIOS_H || HAVE_TERMIO_H */ - - tcsetattr(tty_fd, TCSADRAIN, &cb); - -#ifdef __CYGWIN__ - if (edchars.eof == '\0') - edchars.eof = '\4'; -#endif /* __CYGWIN__ */ - - /* Convert unset values to internal 'unset' value */ - if (edchars.erase == _POSIX_VDISABLE) - edchars.erase = -1; - if (edchars.kill == _POSIX_VDISABLE) - edchars.kill = -1; - if (edchars.intr == _POSIX_VDISABLE) - edchars.intr = -1; - if (edchars.quit == _POSIX_VDISABLE) - edchars.quit = -1; - if (edchars.eof == _POSIX_VDISABLE) - edchars.eof = -1; - if (edchars.werase == _POSIX_VDISABLE) - edchars.werase = -1; - if (memcmp(&edchars, &oldchars, sizeof(edchars)) != 0) - x_emacs_keys(&edchars); - } else { - tcsetattr(tty_fd, TCSADRAIN, &tty_state); - } - - return prev; -} - -/* NAME: - * promptlen - calculate the length of PS1 etc. - * - * DESCRIPTION: - * This function is based on a fix from guy@demon.co.uk - * It fixes a bug in that if PS1 contains '!', the length - * given by strlen() is probably wrong. - * - * RETURN VALUE: - * length - */ -int -promptlen(const char *cp, const char **spp) -{ - int count = 0; - const char *sp = cp; - char delimiter = 0; - int indelimit = 0; - - /* Undocumented AT&T ksh feature: - * If the second char in the prompt string is \r then the first char - * is taken to be a non-printing delimiter and any chars between two - * instances of the delimiter are not considered to be part of the - * prompt length - */ - if (*cp && cp[1] == '\r') { - delimiter = *cp; - cp += 2; - } - - for (; *cp; cp++) { - if (indelimit && *cp != delimiter) - ; - else if (*cp == '\n' || *cp == '\r') { - count = 0; - sp = cp + 1; - } else if (*cp == '\t') { - count = (count | 7) + 1; - } else if (*cp == '\b') { - if (count > 0) - count--; - } else if (*cp == delimiter) - indelimit = !indelimit; - else - count++; - } - if (spp) - *spp = sp; - return count; -} - -void -set_editmode(const char *ed) -{ - static const enum sh_flag edit_flags[] = { - FEMACS, FGMACS, - FVI, - }; - char *rcp; - unsigned i; - - if ((rcp = ksh_strrchr_dirsep(ed))) - ed = ++rcp; - for (i = 0; i < NELEM(edit_flags); i++) - if (strstr(ed, options[(int) edit_flags[i]].name)) { - change_flag(edit_flags[i], OF_SPECIAL, 1); - return; - } -} - -/* ------------------------------------------------------------------------- */ -/* Misc common code for vi/emacs */ - -/* Handle the commenting/uncommenting of a line. - * Returns: - * 1 if a carriage return is indicated (comment added) - * 0 if no return (comment removed) - * -1 if there is an error (not enough room for comment chars) - * If successful, *lenp contains the new length. Note: cursor should be - * moved to the start of the line after (un)commenting. - */ -int -x_do_comment(char *buf, int bsize, int *lenp) -{ - int i, j; - int len = *lenp; - - if (len == 0) - return 1; /* somewhat arbitrary - it's what at&t ksh does */ - - /* Already commented? */ - if (buf[0] == '#') { - int saw_nl = 0; - - for (j = 0, i = 1; i < len; i++) { - if (!saw_nl || buf[i] != '#') - buf[j++] = buf[i]; - saw_nl = buf[i] == '\n'; - } - *lenp = j; - return 0; - } else { - int n = 1; - - /* See if there's room for the #'s - 1 per \n */ - for (i = 0; i < len; i++) - if (buf[i] == '\n') - n++; - if (len + n >= bsize) - return -1; - /* Now add them... */ - for (i = len, j = len + n; --i >= 0; ) { - if (buf[i] == '\n') - buf[--j] = '#'; - buf[--j] = buf[i]; - } - buf[0] = '#'; - *lenp += n; - return 1; - } -} - -/* ------------------------------------------------------------------------- */ -/* Common file/command completion code for vi/emacs */ - - -static char *add_glob(const char *str, int slen); -static void glob_table(const char *pat, XPtrV *wp, struct table *tp); -static void glob_path(int flags, const char *pat, XPtrV *wp, - const char *path); - -void -x_print_expansions(int nwords, char *const *words, int is_command) -{ - int use_copy = 0; - int prefix_len; - XPtrV l; - - /* Check if all matches are in the same directory (in this - * case, we want to omit the directory name) - */ - if (!is_command - && (prefix_len = x_longest_prefix(nwords, words)) > 0) - { - int i; - - /* Special case for 1 match (prefix is whole word) */ - if (nwords == 1) - prefix_len = x_basename(words[0], NULL); - /* Any (non-trailing) slashes in non-common word suffixes? */ - for (i = 0; i < nwords; i++) - if (x_basename(words[i] + prefix_len, NULL) - > prefix_len) - break; - /* All in same directory? */ - if (i == nwords) { - while (prefix_len > 0 - && !ISDIRSEP(words[0][prefix_len - 1])) - prefix_len--; - use_copy = 1; - XPinit(l, nwords + 1); - for (i = 0; i < nwords; i++) - XPput(l, words[i] + prefix_len); - XPput(l, NULL); - } - } - - /* - * Enumerate expansions - */ - x_putc('\r'); - x_putc('\n'); - pr_list(use_copy ? (char **) XPptrv(l) : words); - - if (use_copy) - XPfree(l); /* not x_free_words() */ -} - -/* - * Do file globbing: - * - appends * to (copy of) str if no globbing chars found - * - does expansion, checks for no match, etc. - * - sets *wordsp to array of matching strings - * - returns number of matching strings - */ -static int -x_file_glob(int flags GCC_FUNC_ATTR(unused), const char *str, - int slen, char ***wordsp) -{ - char *toglob; - char **words; - int nwords, i, idx, escaping; - XPtrV w; - struct source *s, *sold; - - if (slen < 0) - return 0; - - toglob = add_glob(str, slen); - - /* remove all escaping backward slashes */ - escaping = 0; - for(i = 0, idx = 0; toglob[i]; i++) { - if (toglob[i] == '\\' && !escaping) { - escaping = 1; - continue; - } - - toglob[idx] = toglob[i]; - idx++; - if (escaping) escaping = 0; - } - toglob[idx] = '\0'; - - /* - * Convert "foo*" (toglob) to an array of strings (words) - */ - sold = source; - s = pushs(SWSTR, ATEMP); - s->start = s->str = toglob; - source = s; - if (yylex(ONEWORD) != LWORD) { - source = sold; - internal_errorf(0, "fileglob: substitute error"); - return 0; - } - source = sold; - XPinit(w, 32); - expand(yylval.cp, &w, DOGLOB|DOTILDE|DOMARKDIRS); - XPput(w, NULL); - words = (char **) XPclose(w); - - for (nwords = 0; words[nwords]; nwords++) - ; - if (nwords == 1) { - struct stat statb; - - /* Check if globbing failed (returned glob pattern), - * but be careful (E.g. toglob == "ab*" when the file - * "ab*" exists is not an error). - * Also, check for empty result - happens if we tried - * to glob something which evaluated to an empty - * string (e.g., "$FOO" when there is no FOO, etc). - */ - if ((strcmp(words[0], toglob) == 0 - && stat(words[0], &statb) < 0) - || words[0][0] == '\0') - { - x_free_words(nwords, words); - nwords = 0; - } - } - afree(toglob, ATEMP); - - *wordsp = nwords ? words : NULL; - - return nwords; -} - -/* Data structure used in x_command_glob() */ -struct path_order_info { - char *word; - int base; - int path_order; -}; - -static int path_order_cmp(const void *aa, const void *bb); - -/* Compare routine used in x_command_glob() */ -static int -path_order_cmp(const void *aa, const void *bb) -{ - const struct path_order_info *a = (const struct path_order_info *) aa; - const struct path_order_info *b = (const struct path_order_info *) bb; - int t; - - t = FILECMP(a->word + a->base, b->word + b->base); - return t ? t : a->path_order - b->path_order; -} - -static int -x_command_glob(int flags, const char *str, int slen, char ***wordsp) -{ - char *toglob; - char *pat; - char *fpath; - int nwords; - XPtrV w; - struct block *l; - - if (slen < 0) - return 0; - - toglob = add_glob(str, slen); - - /* Convert "foo*" (toglob) to a pattern for future use */ - pat = evalstr(toglob, DOPAT|DOTILDE); - afree(toglob, ATEMP); - - XPinit(w, 32); - - glob_table(pat, &w, &keywords); - glob_table(pat, &w, &aliases); - glob_table(pat, &w, &builtins); - for (l = e->loc; l; l = l->next) - glob_table(pat, &w, &l->funs); - - glob_path(flags, pat, &w, path); - if ((fpath = str_val(global("FPATH"))) != null) - glob_path(flags, pat, &w, fpath); - - nwords = XPsize(w); - - if (!nwords) { - *wordsp = NULL; - XPfree(w); - return 0; - } - - /* Sort entries */ - if (flags & XCF_FULLPATH) { - /* Sort by basename, then path order */ - struct path_order_info *info; - struct path_order_info *last_info = 0; - char **words = (char **) XPptrv(w); - int path_order = 0; - int i; - - info = (struct path_order_info *) - alloc(sizeof(struct path_order_info) * nwords, ATEMP); - for (i = 0; i < nwords; i++) { - info[i].word = words[i]; - info[i].base = x_basename(words[i], NULL); - if (!last_info || info[i].base != last_info->base - || FILENCMP(words[i], - last_info->word, info[i].base) != 0) - { - last_info = &info[i]; - path_order++; - } - info[i].path_order = path_order; - } - qsort(info, nwords, sizeof(struct path_order_info), - path_order_cmp); - for (i = 0; i < nwords; i++) - words[i] = info[i].word; - afree((void *) info, ATEMP); - } else { - /* Sort and remove duplicate entries */ - char **words = (char **) XPptrv(w); - int i, j; - - qsortp(XPptrv(w), (size_t) nwords, xstrcmp); - - for (i = j = 0; i < nwords - 1; i++) { - if (strcmp(words[i], words[i + 1])) - words[j++] = words[i]; - else - afree(words[i], ATEMP); - } - words[j++] = words[i]; - nwords = j; - w.cur = (void **) &words[j]; - } - - XPput(w, NULL); - *wordsp = (char **) XPclose(w); - - return nwords; -} - -#define IS_WORDC(c) !( ctype(c, C_LEX1) || (c) == '\'' || (c) == '"' \ - || (c) == '`' || (c) == '=' || (c) == ':' ) - -static int -x_locate_word(const char *buf, int buflen, int pos, int *startp, int *is_commandp) -{ - int p; - int start, end; - - /* Bad call? Probably should report error */ - if (pos < 0 || pos > buflen) { - *startp = pos; - *is_commandp = 0; - return 0; - } - /* The case where pos == buflen happens to take care of itself... */ - - start = pos; - /* Keep going backwards to start of word (has effect of allowing - * one blank after the end of a word) - */ - for (; (start > 0 && IS_WORDC(buf[start - 1])) - || (start > 1 && buf[start-2] == '\\'); start--) - ; - /* Go forwards to end of word */ - for (end = start; end < buflen && IS_WORDC(buf[end]); end++) { - if (buf[end] == '\\' && (end+1) < buflen) - end++; - } - - if (is_commandp) { - int iscmd; - - /* Figure out if this is a command */ - for (p = start - 1; p >= 0 && isspace(buf[p]); p--) - ; - iscmd = p < 0 || strchr(";|&()`", buf[p]); - if (iscmd) { - /* If command has a /, path, etc. is not searched; - * only current directory is searched, which is just - * like file globbing. - */ - for (p = start; p < end; p++) - if (ISDIRSEP(buf[p])) - break; - iscmd = p == end; - } - *is_commandp = iscmd; - } - - *startp = start; - - return end - start; -} - -int -x_cf_glob(int flags, const char *buf, int buflen, int pos, int *startp, int *endp, char ***wordsp, int *is_commandp) -{ - int len; - int nwords; - char **words; - int is_command; - - len = x_locate_word(buf, buflen, pos, startp, &is_command); - if (!(flags & XCF_COMMAND)) - is_command = 0; - /* Don't do command globing on zero length strings - it takes too - * long and isn't very useful. File globs are more likely to be - * useful, so allow these. - */ - if (len == 0 && is_command) - return 0; - - nwords = (is_command ? x_command_glob : x_file_glob)(flags, - buf + *startp, len, &words); - if (nwords == 0) { - *wordsp = NULL; - return 0; - } - - if (is_commandp) - *is_commandp = is_command; - *wordsp = words; - *endp = *startp + len; - - return nwords; -} - -/* Given a string, copy it and possibly add a '*' to the end. The - * new string is returned. - */ -static char * -add_glob(const char *str, int slen) -{ - char *toglob; - char *s; - bool saw_slash = false; - - if (slen < 0) - return NULL; - - toglob = str_nsave(str, slen + 1, ATEMP); /* + 1 for "*" */ - toglob[slen] = '\0'; - - /* - * If the pathname contains a wildcard (an unquoted '*', - * '?', or '[') or parameter expansion ('$'), or a ~username - * with no trailing slash, then it is globbed based on that - * value (i.e., without the appended '*'). - */ - for (s = toglob; *s; s++) { - if (*s == '\\' && s[1]) - s++; - else if (*s == '*' || *s == '[' || *s == '?' || *s == '$' - || (s[1] == '(' /*)*/ && strchr("*+?@!", *s))) - break; - else if (ISDIRSEP(*s)) - saw_slash = true; - } - if (!*s && (*toglob != '~' || saw_slash)) { - toglob[slen] = '*'; - toglob[slen + 1] = '\0'; - } - - return toglob; -} - -/* - * Find longest common prefix - */ -int -x_longest_prefix(int nwords, char *const *words) -{ - int i, j; - int prefix_len; - char *p; - - if (nwords <= 0) - return 0; - - prefix_len = strlen(words[0]); - for (i = 1; i < nwords; i++) - for (j = 0, p = words[i]; j < prefix_len; j++) - if (FILECHCONV(p[j]) != FILECHCONV(words[0][j])) { - prefix_len = j; - break; - } - return prefix_len; -} - -void -x_free_words(int nwords, char **words) -{ - int i; - - for (i = 0; i < nwords; i++) - if (words[i]) - afree(words[i], ATEMP); - afree(words, ATEMP); -} - -/* Return the offset of the basename of string s (which ends at se - need not - * be null terminated). Trailing slashes are ignored. If s is just a slash, - * then the offset is 0 (actually, length - 1). - * s Return - * /etc 1 - * /etc/ 1 - * /etc// 1 - * /etc/fo 5 - * foo 0 - * /// 2 - * 0 - */ -int -x_basename(const char *s, const char *se) -{ - const char *p; - - if (se == NULL) - se = s + strlen(s); - if (s == se) - return 0; - - /* Skip trailing slashes */ - for (p = se - 1; p > s && ISDIRSEP(*p); p--) - ; - for (; p > s && !ISDIRSEP(*p); p--) - ; - if (ISDIRSEP(*p) && p + 1 < se) - p++; - - return p - s; -} - -/* - * Apply pattern matching to a table: all table entries that match a pattern - * are added to wp. - */ -static void -glob_table(const char *pat, XPtrV *wp, struct table *tp) -{ - struct tstate ts; - struct tbl *te; - - for (twalk(&ts, tp); (te = tnext(&ts)); ) { - if (gmatch(te->name, pat, false)) - XPput(*wp, str_save(te->name, ATEMP)); - } -} - -static void -glob_path(int flags, const char *pat, XPtrV *wp, const char *path) -{ - const char *sp, *p; - char *xp; - int staterr; - int pathlen; - int patlen; - int oldsize, newsize, i, j; - char **words; - XString xs; - - patlen = strlen(pat) + 1; - sp = path; - Xinit(xs, xp, patlen + 128, ATEMP); - while (sp) { - xp = Xstring(xs, xp); - if (!(p = strchr(sp, PATHSEP))) - p = sp + strlen(sp); - pathlen = p - sp; - if (pathlen) { - /* Copy sp into xp, stuffing any MAGIC characters - * on the way - */ - const char *s = sp; - - XcheckN(xs, xp, pathlen * 2); - while (s < p) { - if (ISMAGIC(*s)) - *xp++ = MAGIC; - *xp++ = *s++; - } - *xp++ = DIRSEP; - pathlen++; - } - sp = p; - XcheckN(xs, xp, patlen); - memcpy(xp, pat, patlen); - - oldsize = XPsize(*wp); - glob_str(Xstring(xs, xp), wp, 1); /* mark dirs */ - newsize = XPsize(*wp); - - /* Check that each match is executable... */ - words = (char **) XPptrv(*wp); - for (i = j = oldsize; i < newsize; i++) { - staterr = 0; - if ((search_access(words[i], X_OK, &staterr) >= 0) - || (staterr == EISDIR)) { - words[j] = words[i]; - if (!(flags & XCF_FULLPATH)) - memmove(words[j], words[j] + pathlen, - strlen(words[j] + pathlen) + 1); - j++; - } else - afree(words[i], ATEMP); - } - wp->cur = (void **) &words[j]; - - if (!*sp++) - break; - } - Xfree(xs, xp); -} - -/* - * if argument string contains any special characters, they will - * be escaped and the result will be put into edit buffer by - * keybinding-specific function - */ -int -x_escape(const char *s, size_t len, int (*putbuf_func) (const char *, size_t)) -{ - size_t add, wlen; - const char *ifs = str_val(local("IFS", 0)); - int rval=0; - - for (add = 0, wlen = len; wlen - add > 0; add++) { - if (strchr("\\$(){}[]*&;#|<>\"'`", s[add]) || strchr(ifs, s[add])) { - if (putbuf_func(s, add) != 0) { - rval = -1; - break; - } - - putbuf_func("\\", 1); - putbuf_func(&s[add], 1); - - add++; - wlen -= add; - s += add; - add = -1; /* after the increment it will go to 0 */ - } - } - if (wlen > 0 && rval == 0) - rval = putbuf_func(s, wlen); - - return (rval); -} diff --git a/edit.h b/edit.h deleted file mode 100644 index 812a9a3..0000000 --- a/edit.h +++ /dev/null @@ -1,74 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: edit.h,v 1.3 1999/11/14 22:04:02 d Exp $ */ -/* $From: edit.h,v 1.2 1994/05/19 18:32:40 michael Exp michael $ */ - -#ifndef EDIT_H -#define EDIT_H - -/* some useful #defines */ -#ifdef EXTERN -# define I__(i) = i -#else -# define I__(i) -# define EXTERN extern -# define EXTERN_DEFINED -#endif - -#define BEL 0x07 - -/* tty driver characters we are interested in */ -typedef struct { - int erase; - int kill; - int werase; - int intr; - int quit; - int eof; -} X_chars; - -EXTERN X_chars edchars; - -/* x_fc_glob() flags */ -#define XCF_COMMAND BIT(0) /* Do command completion */ -#define XCF_FILE BIT(1) /* Do file completion */ -#define XCF_FULLPATH BIT(2) /* command completion: store full path */ -#define XCF_COMMAND_FILE (XCF_COMMAND|XCF_FILE) - -/* edit.c */ -int x_getc(void); -void x_flush(void); -void x_putc(int c); -void x_puts(const char *s); -bool x_mode(bool onoff); -int promptlen(const char *cp, const char **spp); -int x_do_comment(char *buf, int bsize, int *lenp); -void x_print_expansions(int nwords, char *const *words, int is_command); -int x_cf_glob(int flags, const char *buf, int buflen, int pos, int *startp, - int *endp, char ***wordsp, int *is_commandp); -int x_longest_prefix(int nwords, char *const *words); -int x_basename(const char *s, const char *se); -void x_free_words(int nwords, char **words); -int x_escape(const char *, size_t, int (*)(const char *s, size_t len)); -/* emacs.c */ -int x_emacs(char *buf, size_t len); -void x_init_emacs(void); -void x_emacs_keys(X_chars *ec); -/* vi.c */ -int x_vi(char *buf, size_t len); - - -#ifdef DEBUG -# define D__(x) x -#else -# define D__(x) -#endif - -/* This lot goes at the END */ -/* be sure not to interfere with anyone else's idea about EXTERN */ -#ifdef EXTERN_DEFINED -# undef EXTERN_DEFINED -# undef EXTERN -#endif -#undef I__ - -#endif /* ndef EDIT_H */ diff --git a/emacs-gen.sh b/emacs-gen.sh deleted file mode 100644 index 1a35d96..0000000 --- a/emacs-gen.sh +++ /dev/null @@ -1,45 +0,0 @@ -#!/bin/sh -# $MirOS$ -# $OpenBSD: emacs-gen.sh,v 1.1.1.1 1996/08/14 06:19:10 downsj Exp $ - -case $# in -1) file=$1;; -*) - echo "$0: Usage: $0 path-to-emacs.c" 1>&2 - exit 1 -esac; - -if [ ! -r "$file" ] ;then - echo "$0: can't read $file" 1>&2 - exit 1 -fi - -cat << E_O_F || exit 1 -/* - * NOTE: THIS FILE WAS GENERATED AUTOMATICALLY FROM $file - * - * DO NOT BOTHER EDITING THIS FILE - */ -E_O_F - -# Pass 1: print out lines before @START-FUNC-TAB@ -# and generate defines and function declarations, -sed -e '1,/@START-FUNC-TAB@/d' -e '/@END-FUNC-TAB@/,$d' < $file | - awk 'BEGIN { nfunc = 0; } - /^[ ]*#/ { - print $0; - next; - } - { - fname = $2; - c = substr(fname, length(fname), 1); - if (c == ",") - fname = substr(fname, 1, length(fname) - 1); - if (fname != "0") { - printf "#define XFUNC_%s %d\n", substr(fname, 3, length(fname) - 2), nfunc; - printf "static int %s(int c);\n", fname; - nfunc++; - } - }' || exit 1 - -exit 0 diff --git a/emacs.c b/emacs.c deleted file mode 100644 index 7bd013b..0000000 --- a/emacs.c +++ /dev/null @@ -1,2026 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: emacs.c,v 1.34 2004/12/23 11:29:02 jsg Exp $ */ - -/* - * Emacs-like command line editing and history - * - * created by Ron Natalie at BRL - * modified by Doug Kingston, Doug Gwyn, and Lou Salkind - * adapted to PD ksh by Eric Gisin - */ - -#include "config.h" - -#include "sh.h" -#include "ksh_stat.h" -#include -#include -#include -#include "edit.h" - -__RCSID("$MirOS$"); - -static Area aedit; -#define AEDIT &aedit /* area for kill ring and macro defns */ - -#undef CTRL /* _BSD brain damage */ -#define CTRL(x) ((x) == '?' ? 0x7F : (x) & 0x1F) /* ASCII */ -#define UNCTRL(x) ((x) == 0x7F ? '?' : (x) | 0x40) /* ASCII */ -#define META(x) ((x) & 0x7f) -#define ISMETA(x) (Flag(FEMACSUSEMETA) && ((x) & 0x80)) - - -/* values returned by keyboard functions */ -#define KSTD 0 -#define KEOL 1 /* ^M, ^J */ -#define KINTR 2 /* ^G, ^C */ - -struct x_ftab { - int (*xf_func)(int c); - const char *xf_name; - short xf_flags; -}; - -struct x_defbindings { - u_char xdb_func; /* XFUNC_* */ - unsigned char xdb_tab; - unsigned char xdb_char; -}; - -#define XF_ARG 1 /* command takes number prefix */ -#define XF_NOBIND 2 /* not allowed to bind to function */ -#define XF_PREFIX 4 /* function sets prefix */ - -/* Separator for completion */ -#define is_cfs(c) (c == ' ' || c == '\t' || c == '"' || c == '\'') -#define is_mfs(c) (!(isalnum(c) || c == '_' || c == '$')) /* Separator for motion */ - -#define CHARMASK 0xFF /* 8-bit character mask */ -#define X_NTABS 3 /* normal, meta1, meta2 */ -#define X_TABSZ (CHARMASK+1) /* size of keydef tables etc */ - -/* Arguments for do_complete() - * 0 = enumerate M-= complete as much as possible and then list - * 1 = complete M-Esc - * 2 = list M-? - */ -typedef enum { CT_LIST, /* list the possible completions */ - CT_COMPLETE, /* complete to longest prefix */ - CT_COMPLIST /* complete and then list (if non-exact) */ - } Comp_type; - -/* { from 4.9 edit.h */ -/* - * The following are used for my horizontal scrolling stuff - */ -static char *xbuf; /* beg input buffer */ -static char *xend; /* end input buffer */ -static char *xcp; /* current position */ -static char *xep; /* current end */ -static char *xbp; /* start of visible portion of input buffer */ -static char *xlp; /* last char visible on screen */ -static int x_adj_ok; -/* - * we use x_adj_done so that functions can tell - * whether x_adjust() has been called while they are active. - */ -static int x_adj_done; - -static int xx_cols; -static int x_col; -static int x_displen; -static int x_arg; /* general purpose arg */ -static int x_arg_defaulted;/* x_arg not explicitly set; defaulted to 1 */ - -static int xlp_valid; -/* end from 4.9 edit.h } */ - -static int x_prefix1 = CTRL('['), x_prefix2 = CTRL('X'); -static char **x_histp; /* history position */ -static int x_nextcmd; /* for newline-and-next */ -static char *xmp; /* mark pointer */ -static u_char x_last_command; -static u_char (*x_tab)[X_TABSZ]; /* key definition */ -static char *(*x_atab)[X_TABSZ]; /* macro definitions */ -static unsigned char x_bound[(X_TABSZ * X_NTABS + 7) / 8]; -#define KILLSIZE 20 -static char *killstack[KILLSIZE]; -static int killsp, killtp; -static int x_curprefix; -static char *macroptr; -static int prompt_skip; - -static int x_ins(char *cp); -static void x_delete(int nc, int push); -static int x_bword(void); -static int x_fword(void); -static void x_goto(char *cp); -static void x_bs(int c); -static int x_size_str(char *cp); -static int x_size(int c); -static void x_zots(char *str); -static void x_zotc(int c); -static void x_load_hist(char **hp); -static int x_search(char *pat, int sameline, int offset); -static int x_match(char *str, char *pat); -static void x_redraw(int limit); -static void x_push(int nchars); -static char * x_mapin(const char *cp); -static char * x_mapout(int c); -static void x_print(int prefix, int key); -static void x_adjust(void); -static void x_e_ungetc(int c); -static int x_e_getc(void); -static void x_e_putc(int c); -static void x_e_puts(const char *s); -static int x_comment(int c); -static int x_fold_case(int c); -static char *x_lastcp(void); -static void do_complete(int flags, Comp_type type); -static int x_emacs_putbuf(const char *s, size_t len); - - -/* The lines between START-FUNC-TAB .. END-FUNC-TAB are run through a - * script (emacs-gen.sh) that generates emacs.out which contains: - * - function declarations for x_* functions - * - defines of the form XFUNC_ where is function - * name, sans leading x_. - * Note that the script treats #ifdef and { 0, 0, 0} specially - use with - * caution. - */ -#include "emacs.out" -static const struct x_ftab x_ftab[] = { -/* @START-FUNC-TAB@ */ - { x_abort, "abort", 0 }, - { x_beg_hist, "beginning-of-history", 0 }, - { x_comp_comm, "complete-command", 0 }, - { x_comp_file, "complete-file", 0 }, - { x_complete, "complete", 0 }, - { x_del_back, "delete-char-backward", XF_ARG }, - { x_del_bword, "delete-word-backward", XF_ARG }, - { x_del_char, "delete-char-forward", XF_ARG }, - { x_del_fword, "delete-word-forward", XF_ARG }, - { x_del_line, "kill-line", 0 }, - { x_draw_line, "redraw", 0 }, - { x_end_hist, "end-of-history", 0 }, - { x_end_of_text, "eot", 0 }, - { x_enumerate, "list", 0 }, - { x_eot_del, "eot-or-delete", XF_ARG }, - { x_error, "error", 0 }, - { x_goto_hist, "goto-history", XF_ARG }, - { x_ins_string, "macro-string", XF_NOBIND }, - { x_insert, "auto-insert", XF_ARG }, - { x_kill, "kill-to-eol", XF_ARG }, - { x_kill_region, "kill-region", 0 }, - { x_list_comm, "list-command", 0 }, - { x_list_file, "list-file", 0 }, - { x_literal, "quote", 0 }, - { x_meta1, "prefix-1", XF_PREFIX }, - { x_meta2, "prefix-2", XF_PREFIX }, - { x_meta_yank, "yank-pop", 0 }, - { x_mv_back, "backward-char", XF_ARG }, - { x_mv_begin, "beginning-of-line", 0 }, - { x_mv_bword, "backward-word", XF_ARG }, - { x_mv_end, "end-of-line", 0 }, - { x_mv_forw, "forward-char", XF_ARG }, - { x_mv_fword, "forward-word", XF_ARG }, - { x_newline, "newline", 0 }, - { x_next_com, "down-history", XF_ARG }, - { x_nl_next_com, "newline-and-next", 0 }, - { x_noop, "no-op", 0 }, - { x_prev_com, "up-history", XF_ARG }, - { x_prev_histword, "prev-hist-word", XF_ARG }, - { x_search_char_forw, "search-character-forward", XF_ARG }, - { x_search_char_back, "search-character-backward", XF_ARG }, - { x_search_hist, "search-history", 0 }, - { x_set_mark, "set-mark-command", 0 }, - { x_stuff, "stuff", 0 }, - { x_stuffreset, "stuff-reset", 0 }, - { x_transpose, "transpose-chars", 0 }, - { x_version, "version", 0 }, - { x_xchg_point_mark, "exchange-point-and-mark", 0 }, - { x_yank, "yank", 0 }, - { x_comp_list, "complete-list", 0 }, - { x_expand, "expand-file", 0 }, - { x_fold_capitalize, "capitalize-word", XF_ARG }, - { x_fold_lower, "downcase-word", XF_ARG }, - { x_fold_upper, "upcase-word", XF_ARG }, - { x_set_arg, "set-arg", XF_NOBIND }, - { x_comment, "comment", 0 }, -#ifdef DEBUG - { x_debug_info, "debug-info", 0 }, -#else - { 0, 0, 0 }, -#endif -/* @END-FUNC-TAB@ */ - }; - -static struct x_defbindings const x_defbindings[] = { - { XFUNC_del_back, 0, CTRL('?') }, - { XFUNC_del_bword, 1, CTRL('?') }, - { XFUNC_eot_del, 0, CTRL('D') }, - { XFUNC_del_back, 0, CTRL('H') }, - { XFUNC_del_bword, 1, CTRL('H') }, - { XFUNC_del_bword, 1, 'h' }, - { XFUNC_mv_bword, 1, 'b' }, - { XFUNC_mv_fword, 1, 'f' }, - { XFUNC_del_fword, 1, 'd' }, - { XFUNC_mv_back, 0, CTRL('B') }, - { XFUNC_mv_forw, 0, CTRL('F') }, - { XFUNC_search_char_forw, 0, CTRL(']') }, - { XFUNC_search_char_back, 1, CTRL(']') }, - { XFUNC_newline, 0, CTRL('M') }, - { XFUNC_newline, 0, CTRL('J') }, - { XFUNC_end_of_text, 0, CTRL('_') }, - { XFUNC_abort, 0, CTRL('G') }, - { XFUNC_prev_com, 0, CTRL('P') }, - { XFUNC_next_com, 0, CTRL('N') }, - { XFUNC_nl_next_com, 0, CTRL('O') }, - { XFUNC_search_hist, 0, CTRL('R') }, - { XFUNC_beg_hist, 1, '<' }, - { XFUNC_end_hist, 1, '>' }, - { XFUNC_goto_hist, 1, 'g' }, - { XFUNC_mv_end, 0, CTRL('E') }, - { XFUNC_mv_begin, 0, CTRL('A') }, - { XFUNC_draw_line, 0, CTRL('L') }, - { XFUNC_meta1, 0, CTRL('[') }, - { XFUNC_meta2, 0, CTRL('X') }, - { XFUNC_kill, 0, CTRL('K') }, - { XFUNC_yank, 0, CTRL('Y') }, - { XFUNC_meta_yank, 1, 'y' }, - { XFUNC_literal, 0, CTRL('^') }, - { XFUNC_comment, 1, '#' }, -#if defined(BRL) && defined(TIOCSTI) - { XFUNC_stuff, 0, CTRL('T') }, -#else - { XFUNC_transpose, 0, CTRL('T') }, -#endif - { XFUNC_complete, 1, CTRL('[') }, - { XFUNC_comp_list, 0, CTRL('I') }, - { XFUNC_comp_list, 1, '=' }, - { XFUNC_enumerate, 1, '?' }, - { XFUNC_expand, 1, '*' }, - { XFUNC_comp_file, 1, CTRL('X') }, - { XFUNC_comp_comm, 2, CTRL('[') }, - { XFUNC_list_comm, 2, '?' }, - { XFUNC_list_file, 2, CTRL('Y') }, - { XFUNC_set_mark, 1, ' ' }, - { XFUNC_kill_region, 0, CTRL('W') }, - { XFUNC_xchg_point_mark, 2, CTRL('X') }, - { XFUNC_version, 0, CTRL('V') }, -#ifdef DEBUG - { XFUNC_debug_info, 1, CTRL('H') }, -#endif - { XFUNC_prev_histword, 1, '.' }, - { XFUNC_prev_histword, 1, '_' }, - { XFUNC_set_arg, 1, '0' }, - { XFUNC_set_arg, 1, '1' }, - { XFUNC_set_arg, 1, '2' }, - { XFUNC_set_arg, 1, '3' }, - { XFUNC_set_arg, 1, '4' }, - { XFUNC_set_arg, 1, '5' }, - { XFUNC_set_arg, 1, '6' }, - { XFUNC_set_arg, 1, '7' }, - { XFUNC_set_arg, 1, '8' }, - { XFUNC_set_arg, 1, '9' }, - { XFUNC_fold_upper, 1, 'U' }, - { XFUNC_fold_upper, 1, 'u' }, - { XFUNC_fold_lower, 1, 'L' }, - { XFUNC_fold_lower, 1, 'l' }, - { XFUNC_fold_capitalize, 1, 'C' }, - { XFUNC_fold_capitalize, 1, 'c' }, - /* These for ansi arrow keys: arguablely shouldn't be here by - * default, but its simpler/faster/smaller than using termcap - * entries. - */ - { XFUNC_meta2, 1, '[' }, - { XFUNC_meta2, 1, 'O' }, - { XFUNC_prev_com, 2, 'A' }, - { XFUNC_next_com, 2, 'B' }, - { XFUNC_mv_forw, 2, 'C' }, - { XFUNC_mv_back, 2, 'D' }, -}; - -int -x_emacs(char *buf, size_t len) -{ - int c; - const char *p; - int i; - u_char f; - - xbp = xbuf = buf; xend = buf + len; - xlp = xcp = xep = buf; - *xcp = 0; - xlp_valid = true; - xmp = NULL; - x_curprefix = 0; - macroptr = NULL; - x_histp = histptr + 1; - x_last_command = XFUNC_error; - - xx_cols = x_cols; - x_col = promptlen(prompt, &p); - prompt_skip = p - prompt; - x_adj_ok = 1; - x_displen = xx_cols - 2 - x_col; - x_adj_done = 0; - - pprompt(prompt, 0); - - if (x_nextcmd >= 0) { - int off = source->line - x_nextcmd; - if (histptr - history >= off) - x_load_hist(histptr - off); - x_nextcmd = -1; - } - - while (1) { - x_flush(); - if ((c = x_e_getc()) < 0) - return 0; - - if (ISMETA(c)) { - c = META(c); - x_curprefix = 1; - } - - f = x_curprefix == -1 ? XFUNC_insert - : x_tab[x_curprefix][c&CHARMASK]; - - if (!(x_ftab[f].xf_flags & XF_PREFIX) - && x_last_command != XFUNC_set_arg) - { - x_arg = 1; - x_arg_defaulted = 1; - } - i = c | (x_curprefix << 8); - x_curprefix = 0; - switch (i = (*x_ftab[f].xf_func)(i)) { - case KSTD: - if (!(x_ftab[f].xf_flags & XF_PREFIX)) - x_last_command = f; - break; - case KEOL: - i = xep - xbuf; - return i; - case KINTR: /* special case for interrupt */ - trapsig(SIGINT); - x_mode(false); - unwind(LSHELL); - } - } -} - -static int -x_insert(int c GCC_FUNC_ATTR(unused)) -{ - char str[2]; - - /* - * Should allow tab and control chars. - */ - if (c == 0) { - x_e_putc(BEL); - return KSTD; - } - str[0] = c; - str[1] = '\0'; - while (x_arg--) - x_ins(str); - return KSTD; -} - -static int -x_ins_string(int c GCC_FUNC_ATTR(unused)) -{ - if (macroptr) { - x_e_putc(BEL); - return KSTD; - } - macroptr = x_atab[c>>8][c & CHARMASK]; - if (macroptr && !*macroptr) { - /* XXX bell? */ - macroptr = NULL; - } - return KSTD; -} - -static int x_do_ins(const char *cp, int len); - -static int -x_do_ins(const char *cp, int len) -{ - if (xep+len >= xend) { - x_e_putc(BEL); - return -1; - } - - memmove(xcp+len, xcp, xep - xcp + 1); - memmove(xcp, cp, len); - xcp += len; - xep += len; - return 0; -} - -static int -x_ins(char *s) -{ - char *cp = xcp; - int adj = x_adj_done; - - if (x_do_ins(s, strlen(s)) < 0) - return -1; - /* - * x_zots() may result in a call to x_adjust() - * we want xcp to reflect the new position. - */ - xlp_valid = false; - x_lastcp(); - x_adj_ok = (xcp >= xlp); - x_zots(cp); - if (adj == x_adj_done) /* has x_adjust() been called? */ - { - /* no */ - for (cp = xlp; cp > xcp; ) - x_bs(*--cp); - } - - x_adj_ok = 1; - return 0; -} - -/* - * this is used for x_escape() in do_complete() - */ -static int -x_emacs_putbuf(const char *s, size_t len) -{ - int rval; - - if ((rval = x_do_ins(s, len)) != 0) - return (rval); - return (rval); -} - -static int -x_del_back(int c GCC_FUNC_ATTR(unused)) -{ - int col = xcp - xbuf; - - if (col == 0) { - x_e_putc(BEL); - return KSTD; - } - if (x_arg > col) - x_arg = col; - x_goto(xcp - x_arg); - x_delete(x_arg, false); - return KSTD; -} - -static int -x_del_char(int c GCC_FUNC_ATTR(unused)) -{ - int nleft = xep - xcp; - - if (!nleft) { - x_e_putc(BEL); - return KSTD; - } - if (x_arg > nleft) - x_arg = nleft; - x_delete(x_arg, false); - return KSTD; -} - -/* Delete nc chars to the right of the cursor (including cursor position) */ -static void -x_delete(int nc, int push) -{ - int i,j; - char *cp; - - if (nc == 0) - return; - if (xmp != NULL && xmp > xcp) { - if (xcp + nc > xmp) - xmp = xcp; - else - xmp -= nc; - } - - /* - * This lets us yank a word we have deleted. - */ - if (push) - x_push(nc); - - xep -= nc; - cp = xcp; - j = 0; - i = nc; - while (i--) { - j += x_size(*cp++); - } - memmove(xcp, xcp+nc, xep - xcp + 1); /* Copies the null */ - x_adj_ok = 0; /* don't redraw */ - x_zots(xcp); - /* - * if we are already filling the line, - * there is no need to ' ','\b'. - * But if we must, make sure we do the minimum. - */ - if ((i = xx_cols - 2 - x_col) > 0) - { - j = (j < i) ? j : i; - i = j; - while (i--) - x_e_putc(' '); - i = j; - while (i--) - x_e_putc('\b'); - } - /*x_goto(xcp);*/ - x_adj_ok = 1; - xlp_valid = false; - for (cp = x_lastcp(); cp > xcp; ) - x_bs(*--cp); - - return; -} - -static int -x_del_bword(int c GCC_FUNC_ATTR(unused)) -{ - x_delete(x_bword(), true); - return KSTD; -} - -static int -x_mv_bword(int c GCC_FUNC_ATTR(unused)) -{ - (void)x_bword(); - return KSTD; -} - -static int -x_mv_fword(int c GCC_FUNC_ATTR(unused)) -{ - x_goto(xcp + x_fword()); - return KSTD; -} - -static int -x_del_fword(int c GCC_FUNC_ATTR(unused)) -{ - x_delete(x_fword(), true); - return KSTD; -} - -static int -x_bword(void) -{ - int nc = 0; - char *cp = xcp; - - if (cp == xbuf) { - x_e_putc(BEL); - return 0; - } - while (x_arg--) - { - while (cp != xbuf && is_mfs(cp[-1])) - { - cp--; - nc++; - } - while (cp != xbuf && !is_mfs(cp[-1])) - { - cp--; - nc++; - } - } - x_goto(cp); - return nc; -} - -static int -x_fword(void) -{ - int nc = 0; - char *cp = xcp; - - if (cp == xep) { - x_e_putc(BEL); - return 0; - } - while (x_arg--) - { - while (cp != xep && is_mfs(*cp)) - { - cp++; - nc++; - } - while (cp != xep && !is_mfs(*cp)) - { - cp++; - nc++; - } - } - return nc; -} - -static void -x_goto(char *cp) -{ - if (cp < xbp || cp >= (xbp + x_displen)) - { - /* we are heading off screen */ - xcp = cp; - x_adjust(); - } - else - { - if (cp < xcp) /* move back */ - { - while (cp < xcp) - x_bs(*--xcp); - } - else - { - if (cp > xcp) /* move forward */ - { - while (cp > xcp) - x_zotc(*xcp++); - } - } - } -} - -static void -x_bs(int c GCC_FUNC_ATTR(unused)) -{ - int i; - i = x_size(c); - while (i--) - x_e_putc('\b'); -} - -static int -x_size_str(char *cp) -{ - int size = 0; - while (*cp) - size += x_size(*cp++); - return size; -} - -static int -x_size(int c GCC_FUNC_ATTR(unused)) -{ - if (c=='\t') - return 4; /* Kludge, tabs are always four spaces. */ - if (iscntrl(c)) /* control char */ - return 2; - return 1; -} - -static void -x_zots(char *str) -{ - int adj = x_adj_done; - - x_lastcp(); - while (*str && str < xlp && adj == x_adj_done) - x_zotc(*str++); -} - -static void -x_zotc(int c GCC_FUNC_ATTR(unused)) -{ - if (c == '\t') { - /* Kludge, tabs are always four spaces. */ - x_e_puts(" "); - } else if (iscntrl(c)) { - x_e_putc('^'); - x_e_putc(UNCTRL(c)); - } else - x_e_putc(c); -} - -static int -x_mv_back(int c GCC_FUNC_ATTR(unused)) -{ - int col = xcp - xbuf; - - if (col == 0) { - x_e_putc(BEL); - return KSTD; - } - if (x_arg > col) - x_arg = col; - x_goto(xcp - x_arg); - return KSTD; -} - -static int -x_mv_forw(int c GCC_FUNC_ATTR(unused)) -{ - int nleft = xep - xcp; - - if (!nleft) { - x_e_putc(BEL); - return KSTD; - } - if (x_arg > nleft) - x_arg = nleft; - x_goto(xcp + x_arg); - return KSTD; -} - -static int -x_search_char_forw(int c GCC_FUNC_ATTR(unused)) -{ - char *cp = xcp; - - *xep = '\0'; - c = x_e_getc(); - while (x_arg--) { - if (c < 0 - || ((cp = (cp == xep) ? NULL : strchr(cp + 1, c)) == NULL - && (cp = strchr(xbuf, c)) == NULL)) - { - x_e_putc(BEL); - return KSTD; - } - } - x_goto(cp); - return KSTD; -} - -static int -x_search_char_back(int c GCC_FUNC_ATTR(unused)) -{ - char *cp = xcp, *p; - - c = x_e_getc(); - for (; x_arg--; cp = p) - for (p = cp; ; ) { - if (p-- == xbuf) - p = xep; - if (c < 0 || p == cp) { - x_e_putc(BEL); - return KSTD; - } - if (*p == c) - break; - } - x_goto(cp); - return KSTD; -} - -static int -x_newline(int c GCC_FUNC_ATTR(unused)) -{ - x_e_putc('\r'); - x_e_putc('\n'); - x_flush(); - *xep++ = '\n'; - return KEOL; -} - -static int -x_end_of_text(int c GCC_FUNC_ATTR(unused)) -{ - return KEOL; -} - -static int -x_beg_hist(int c GCC_FUNC_ATTR(unused)) -{ - x_load_hist(history); - return KSTD; -} - -static int -x_end_hist(int c GCC_FUNC_ATTR(unused)) -{ - x_load_hist(histptr); - return KSTD; -} - -static int -x_prev_com(int c GCC_FUNC_ATTR(unused)) -{ - x_load_hist(x_histp - x_arg); - return KSTD; -} - -static int -x_next_com(int c GCC_FUNC_ATTR(unused)) -{ - x_load_hist(x_histp + x_arg); - return KSTD; -} - -/* Goto a particular history number obtained from argument. - * If no argument is given history 1 is probably not what you - * want so we'll simply go to the oldest one. - */ -static int -x_goto_hist(int c GCC_FUNC_ATTR(unused)) -{ - if (x_arg_defaulted) - x_load_hist(history); - else - x_load_hist(histptr + x_arg - source->line); - return KSTD; -} - -static void -x_load_hist(char **hp) -{ - int oldsize; - - if (hp < history || hp > histptr) { - x_e_putc(BEL); - return; - } - x_histp = hp; - oldsize = x_size_str(xbuf); - strlcpy(xbuf, *hp, xend - xbuf); - xbp = xbuf; - xep = xcp = xbuf + strlen(xbuf); - xlp_valid = false; - if (xep > x_lastcp()) - x_goto(xep); - else - x_redraw(oldsize); -} - -static int -x_nl_next_com(int c) -{ - x_nextcmd = source->line - (histptr - x_histp) + 1; - return (x_newline(c)); -} - -static int -x_eot_del(int c) -{ - if (xep == xbuf && x_arg_defaulted) - return (x_end_of_text(c)); - else - return (x_del_char(c)); -} - -/* reverse incremental history search */ -static int -x_search_hist(int c GCC_FUNC_ATTR(unused)) -{ - int offset = -1; /* offset of match in xbuf, else -1 */ - char pat [256+1]; /* pattern buffer */ - char *p = pat; - u_char f; - - *p = '\0'; - while (1) { - if (offset < 0) { - x_e_puts("\nI-search: "); - x_e_puts(pat); - } - x_flush(); - if ((c = x_e_getc()) < 0) - return KSTD; - f = x_tab[0][c&CHARMASK]; - if (c == CTRL('[')) - break; - else if (f == XFUNC_search_hist) - offset = x_search(pat, 0, offset); - else if (f == XFUNC_del_back) { - if (p == pat) { - offset = -1; - break; - } - if (p > pat) - *--p = '\0'; - if (p == pat) - offset = -1; - else - offset = x_search(pat, 1, offset); - continue; - } else if (f == XFUNC_insert) { - /* add char to pattern */ - /* overflow check... */ - if (p >= &pat[sizeof(pat) - 1]) { - x_e_putc(BEL); - continue; - } - *p++ = c, *p = '\0'; - if (offset >= 0) { - /* already have partial match */ - offset = x_match(xbuf, pat); - if (offset >= 0) { - x_goto(xbuf + offset + (p - pat) - (*pat == '^')); - continue; - } - } - offset = x_search(pat, 0, offset); - } else { /* other command */ - x_e_ungetc(c); - break; - } - } - if (offset < 0) - x_redraw(-1); - return KSTD; -} - -/* search backward from current line */ -static int -x_search(char *pat, int sameline, int offset) -{ - char **hp; - int i; - - for (hp = x_histp - (sameline ? 0 : 1) ; hp >= history; --hp) { - i = x_match(*hp, pat); - if (i >= 0) { - if (offset < 0) - x_e_putc('\n'); - x_load_hist(hp); - x_goto(xbuf + i + strlen(pat) - (*pat == '^')); - return i; - } - } - x_e_putc(BEL); - x_histp = histptr; - return -1; -} - -/* return position of first match of pattern in string, else -1 */ -static int -x_match(char *str, char *pat) -{ - if (*pat == '^') { - return (strncmp(str, pat+1, strlen(pat+1)) == 0) ? 0 : -1; - } else { - char *q = strstr(str, pat); - return (q == NULL) ? -1 : q - str; - } -} - -static int -x_del_line(int c GCC_FUNC_ATTR(unused)) -{ - int i, j; - - *xep = 0; - i = xep - xbuf; - j = x_size_str(xbuf); - xcp = xbuf; - x_push(i); - xlp = xbp = xep = xbuf; - xlp_valid = true; - *xcp = 0; - xmp = NULL; - x_redraw(j); - return KSTD; -} - -static int -x_mv_end(int c GCC_FUNC_ATTR(unused)) -{ - x_goto(xep); - return KSTD; -} - -static int -x_mv_begin(int c GCC_FUNC_ATTR(unused)) -{ - x_goto(xbuf); - return KSTD; -} - -static int -x_draw_line(int c GCC_FUNC_ATTR(unused)) -{ - x_redraw(-1); - return KSTD; - -} - -/* Redraw (part of) the line. If limit is < 0, the everything is redrawn - * on a NEW line, otherwise limit is the screen column up to which needs - * redrawing. - */ -static void -x_redraw(int limit) -{ - int i, j; - char *cp; - - x_adj_ok = 0; - if (limit == -1) - x_e_putc('\n'); - else - x_e_putc('\r'); - x_flush(); - if (xbp == xbuf) - { - pprompt(prompt + prompt_skip, 0); - x_col = promptlen(prompt, NULL); - } - x_displen = xx_cols - 2 - x_col; - xlp_valid = false; - cp = x_lastcp(); - x_zots(xbp); - if (xbp != xbuf || xep > xlp) - limit = xx_cols; - if (limit >= 0) - { - if (xep > xlp) - i = 0; /* we fill the line */ - else - i = limit - (xlp - xbp); - - for (j = 0; j < i && x_col < (xx_cols - 2); j++) - x_e_putc(' '); - i = ' '; - if (xep > xlp) /* more off screen */ - { - if (xbp > xbuf) - i = '*'; - else - i = '>'; - } - else - if (xbp > xbuf) - i = '<'; - x_e_putc(i); - j++; - while (j--) - x_e_putc('\b'); - } - for (cp = xlp; cp > xcp; ) - x_bs(*--cp); - x_adj_ok = 1; - D__(x_flush();) - return; -} - -static int -x_transpose(int c GCC_FUNC_ATTR(unused)) -{ - char tmp; - - /* What transpose is meant to do seems to be up for debate. This - * is a general summary of the options; the text is abcd with the - * upper case character or underscore indicating the cursor position: - * Who Before After Before After - * at&t ksh in emacs mode: abCd abdC abcd_ (bell) - * at&t ksh in gmacs mode: abCd baCd abcd_ abdc_ - * gnu emacs: abCd acbD abcd_ abdc_ - * Pdksh currently goes with GNU behavior since I believe this is the - * most common version of emacs, unless in gmacs mode, in which case - * it does the at&t ksh gmacs mode. - * This should really be broken up into 3 functions so users can bind - * to the one they want. - */ - if (xcp == xbuf) { - x_e_putc(BEL); - return KSTD; - } else if (xcp == xep || Flag(FGMACS)) { - if (xcp - xbuf == 1) { - x_e_putc(BEL); - return KSTD; - } - /* Gosling/Unipress emacs style: Swap two characters before the - * cursor, do not change cursor position - */ - x_bs(xcp[-1]); - x_bs(xcp[-2]); - x_zotc(xcp[-1]); - x_zotc(xcp[-2]); - tmp = xcp[-1]; - xcp[-1] = xcp[-2]; - xcp[-2] = tmp; - } else { - /* GNU emacs style: Swap the characters before and under the - * cursor, move cursor position along one. - */ - x_bs(xcp[-1]); - x_zotc(xcp[0]); - x_zotc(xcp[-1]); - tmp = xcp[-1]; - xcp[-1] = xcp[0]; - xcp[0] = tmp; - x_bs(xcp[0]); - x_goto(xcp + 1); - } - return KSTD; -} - -static int -x_literal(int c GCC_FUNC_ATTR(unused)) -{ - x_curprefix = -1; - return KSTD; -} - -static int -x_meta1(int c GCC_FUNC_ATTR(unused)) -{ - x_curprefix = 1; - return KSTD; -} - -static int -x_meta2(int c GCC_FUNC_ATTR(unused)) -{ - x_curprefix = 2; - return KSTD; -} - -static int -x_kill(int c GCC_FUNC_ATTR(unused)) -{ - int col = xcp - xbuf; - int lastcol = xep - xbuf; - int ndel; - - if (x_arg_defaulted) - x_arg = lastcol; - else if (x_arg > lastcol) - x_arg = lastcol; - ndel = x_arg - col; - if (ndel < 0) { - x_goto(xbuf + x_arg); - ndel = -ndel; - } - x_delete(ndel, true); - return KSTD; -} - -static void -x_push(int nchars) -{ - char *cp = str_nsave(xcp, nchars, AEDIT); - if (killstack[killsp]) - afree((void *)killstack[killsp], AEDIT); - killstack[killsp] = cp; - killsp = (killsp + 1) % KILLSIZE; -} - -static int -x_yank(int c GCC_FUNC_ATTR(unused)) -{ - if (killsp == 0) - killtp = KILLSIZE; - else - killtp = killsp; - killtp --; - if (killstack[killtp] == 0) { - x_e_puts("\nnothing to yank"); - x_redraw(-1); - return KSTD; - } - xmp = xcp; - x_ins(killstack[killtp]); - return KSTD; -} - -static int -x_meta_yank(int c GCC_FUNC_ATTR(unused)) -{ - int len; - if ((x_last_command != XFUNC_yank && x_last_command != XFUNC_meta_yank) - || killstack[killtp] == 0) { - killtp = killsp; - x_e_puts("\nyank something first"); - x_redraw(-1); - return KSTD; - } - len = strlen(killstack[killtp]); - x_goto(xcp - len); - x_delete(len, false); - do { - if (killtp == 0) - killtp = KILLSIZE - 1; - else - killtp--; - } while (killstack[killtp] == 0); - x_ins(killstack[killtp]); - return KSTD; -} - -static int -x_abort(int c GCC_FUNC_ATTR(unused)) -{ - /* x_zotc(c); */ - xlp = xep = xcp = xbp = xbuf; - xlp_valid = true; - *xcp = 0; - return KINTR; -} - -static int -x_error(int c GCC_FUNC_ATTR(unused)) -{ - x_e_putc(BEL); - return KSTD; -} - -static int -x_stuffreset(int c GCC_FUNC_ATTR(unused)) -{ -#ifdef TIOCSTI - (void)x_stuff(c); - return KINTR; -#else - x_zotc(c); - xlp = xcp = xep = xbp = xbuf; - xlp_valid = true; - *xcp = 0; - x_redraw(-1); - return KSTD; -#endif -} - -static int -x_stuff(int c GCC_FUNC_ATTR(unused)) -{ -#if defined(TIOCSTI) - char ch = c; - bool savmode = x_mode(false); - - (void)ioctl(TTY, TIOCSTI, &ch); - (void)x_mode(savmode); - x_redraw(-1); -#endif - return KSTD; -} - -static char * -x_mapin(const char *cp) -{ - char *new, *op; - - op = new = str_save(cp, ATEMP); - while (*cp) { - /* XXX -- should handle \^ escape? */ - if (*cp == '^') { - cp++; - if (*cp >= '?') /* includes '?'; ASCII */ - *op++ = CTRL(*cp); - else { - *op++ = '^'; - cp--; - } - } else - *op++ = *cp; - cp++; - } - *op = '\0'; - - return new; -} - -static char * -x_mapout(int c GCC_FUNC_ATTR(unused)) -{ - static char buf[8]; - char *p = buf; - - if (iscntrl(c)) { - *p++ = '^'; - *p++ = UNCTRL(c); - } else - *p++ = c; - *p = 0; - return buf; -} - -static void -x_print(int prefix, int key) -{ - if (prefix == 1) - shprintf("%s", x_mapout(x_prefix1)); - if (prefix == 2) - shprintf("%s", x_mapout(x_prefix2)); - shprintf("%s = ", x_mapout(key)); - if (x_tab[prefix][key] != XFUNC_ins_string) - shprintf("%s\n", x_ftab[x_tab[prefix][key]].xf_name); - else - shprintf("'%s'\n", x_atab[prefix][key]); -} - -int -x_bind(const char *a1, const char *a2, int macro, int list) - - /* bind -m */ - /* bind -l */ -{ - u_char f; - int prefix, key; - char *sp = NULL; - char *m1, *m2; - - if (x_tab == NULL) { - bi_errorf("cannot bind, not a tty"); - return 1; - } - - /* List function names */ - if (list) { - for (f = 0; f < NELEM(x_ftab); f++) - if (x_ftab[f].xf_name - && !(x_ftab[f].xf_flags & XF_NOBIND)) - shprintf("%s\n", x_ftab[f].xf_name); - return 0; - } - - if (a1 == NULL) { - for (prefix = 0; prefix < X_NTABS; prefix++) - for (key = 0; key < X_TABSZ; key++) { - f = x_tab[prefix][key]; - if (f == XFUNC_insert || f == XFUNC_error - || (macro && f != XFUNC_ins_string)) - continue; - x_print(prefix, key); - } - return 0; - } - - m1 = x_mapin(a1); - prefix = key = 0; - for (;; m1++) { - key = *m1 & CHARMASK; - if (x_tab[prefix][key] == XFUNC_meta1) - prefix = 1; - else if (x_tab[prefix][key] == XFUNC_meta2) - prefix = 2; - else - break; - } - - if (a2 == NULL) { - x_print(prefix, key); - return 0; - } - - if (*a2 == 0) - f = XFUNC_insert; - else if (!macro) { - for (f = 0; f < NELEM(x_ftab); f++) - if (x_ftab[f].xf_name - && strcmp(x_ftab[f].xf_name, a2) == 0) - break; - if (f == NELEM(x_ftab) || x_ftab[f].xf_flags & XF_NOBIND) { - bi_errorf("%s: no such function", a2); - return 1; - } - } else { - f = XFUNC_ins_string; - m2 = x_mapin(a2); - sp = str_save(m2, AEDIT); - } - - if (x_tab[prefix][key] == XFUNC_ins_string && x_atab[prefix][key]) - afree((void *)x_atab[prefix][key], AEDIT); - x_tab[prefix][key] = f; - x_atab[prefix][key] = sp; - - /* Track what the user has bound so x_emacs_keys() won't toast things */ - if (f == XFUNC_insert) - x_bound[(prefix * X_TABSZ + key) / 8] &= - ~(1 << ((prefix * X_TABSZ + key) % 8)); - else - x_bound[(prefix * X_TABSZ + key) / 8] |= - (1 << ((prefix * X_TABSZ + key) % 8)); - - return 0; -} - -void -x_init_emacs(void) -{ - unsigned i; - int j; - char *locale; - - ainit(AEDIT); - x_nextcmd = -1; - - x_tab = (u_char (*)[X_TABSZ]) alloc(sizeofN(*x_tab, X_NTABS), AEDIT); - for (j = 0; j < X_TABSZ; j++) - x_tab[0][j] = XFUNC_insert; - for (i = 1; i < X_NTABS; i++) - for (j = 0; j < X_TABSZ; j++) - x_tab[i][j] = XFUNC_error; - for (i = 0; i < NELEM(x_defbindings); i++) - x_tab[(unsigned char)x_defbindings[i].xdb_tab][x_defbindings[i].xdb_char] - = x_defbindings[i].xdb_func; - - x_atab = (char *(*)[X_TABSZ]) alloc(sizeofN(*x_atab, X_NTABS), AEDIT); - for (i = 1; i < X_NTABS; i++) - for (j = 0; j < X_TABSZ; j++) - x_atab[i][j] = NULL; - - /* Determine if we can translate meta key or use 8-bit AscII - * XXX - It would be nice if there was a locale attribute to - * determine if the locale is 7-bit or not. - */ - locale = setlocale(LC_CTYPE, NULL); - if (locale == NULL || !strcmp(locale, "C") || !strcmp(locale, "POSIX")) - Flag(FEMACSUSEMETA) = 1; -} - -static void bind_if_not_bound(int p, int k, int func); - -static void -bind_if_not_bound(int p, int k, int func) -{ - /* Has user already bound this key? If so, don't override it */ - if (x_bound[((p) * X_TABSZ + (k)) / 8] - & (1 << (((p) * X_TABSZ + (k)) % 8))) - return; - - x_tab[p][k] = func; -} - -void -x_emacs_keys(X_chars *ec) -{ - if (ec->erase >= 0) { - bind_if_not_bound(0, ec->erase, XFUNC_del_back); - bind_if_not_bound(1, ec->erase, XFUNC_del_bword); - } - if (ec->kill >= 0) - bind_if_not_bound(0, ec->kill, XFUNC_del_line); - if (ec->werase >= 0) - bind_if_not_bound(0, ec->werase, XFUNC_del_bword); - if (ec->intr >= 0) - bind_if_not_bound(0, ec->intr, XFUNC_abort); - if (ec->quit >= 0) - bind_if_not_bound(0, ec->quit, XFUNC_noop); -} - -static int -x_set_mark(int c GCC_FUNC_ATTR(unused)) -{ - xmp = xcp; - return KSTD; -} - -static int -x_kill_region(int c GCC_FUNC_ATTR(unused)) -{ - int rsize; - char *xr; - - if (xmp == NULL) { - x_e_putc(BEL); - return KSTD; - } - if (xmp > xcp) { - rsize = xmp - xcp; - xr = xcp; - } else { - rsize = xcp - xmp; - xr = xmp; - } - x_goto(xr); - x_delete(rsize, true); - xmp = xr; - return KSTD; -} - -static int -x_xchg_point_mark(int c GCC_FUNC_ATTR(unused)) -{ - char *tmp; - - if (xmp == NULL) { - x_e_putc(BEL); - return KSTD; - } - tmp = xmp; - xmp = xcp; - x_goto( tmp ); - return KSTD; -} - -static int -x_version(int c GCC_FUNC_ATTR(unused)) -{ - char *o_xbuf = xbuf, *o_xend = xend; - char *o_xbp = xbp, *o_xep = xep, *o_xcp = xcp; - int lim = x_lastcp() - xbp; - - xbuf = xbp = xcp = (char *) ksh_version + 4; - xend = xep = (char *) ksh_version + 4 + strlen(ksh_version + 4); - x_redraw(lim); - x_flush(); - - c = x_e_getc(); - xbuf = o_xbuf; - xend = o_xend; - xbp = o_xbp; - xep = o_xep; - xcp = o_xcp; - x_redraw(strlen(ksh_version)); - - if (c < 0) - return KSTD; - /* This is what at&t ksh seems to do... Very bizarre */ - if (c != ' ') - x_e_ungetc(c); - - return KSTD; -} - -static int -x_noop(int c GCC_FUNC_ATTR(unused)) -{ - return KSTD; -} - -/* - * File/command name completion routines - */ - - -static int -x_comp_comm(int c GCC_FUNC_ATTR(unused)) -{ - do_complete(XCF_COMMAND, CT_COMPLETE); - return KSTD; -} -static int -x_list_comm(int c GCC_FUNC_ATTR(unused)) -{ - do_complete(XCF_COMMAND, CT_LIST); - return KSTD; -} -static int -x_complete(int c GCC_FUNC_ATTR(unused)) -{ - do_complete(XCF_COMMAND_FILE, CT_COMPLETE); - return KSTD; -} -static int -x_enumerate(int c GCC_FUNC_ATTR(unused)) -{ - do_complete(XCF_COMMAND_FILE, CT_LIST); - return KSTD; -} -static int -x_comp_file(int c GCC_FUNC_ATTR(unused)) -{ - do_complete(XCF_FILE, CT_COMPLETE); - return KSTD; -} -static int -x_list_file(int c GCC_FUNC_ATTR(unused)) -{ - do_complete(XCF_FILE, CT_LIST); - return KSTD; -} -static int -x_comp_list(int c GCC_FUNC_ATTR(unused)) -{ - do_complete(XCF_COMMAND_FILE, CT_COMPLIST); - return KSTD; -} -static int -x_expand(int c GCC_FUNC_ATTR(unused)) -{ - char **words; - int nwords = 0; - int start, end; - int is_command; - int i; - - nwords = x_cf_glob(XCF_FILE, - xbuf, xep - xbuf, xcp - xbuf, - &start, &end, &words, &is_command); - - if (nwords == 0) { - x_e_putc(BEL); - return KSTD; - } - - x_goto(xbuf + start); - x_delete(end - start, false); - for (i = 0; i < nwords;) { - if (x_escape(words[i], strlen(words[i]), x_emacs_putbuf) < 0 || - (++i < nwords && x_ins(space) < 0)) - { - x_e_putc(BEL); - return KSTD; - } - } - x_adjust(); - - return KSTD; -} - -/* type == 0 for list, 1 for complete and 2 for complete-list */ -static void -do_complete(int flags, Comp_type type) - /* XCF_{COMMAND,FILE,COMMAND_FILE} */ - -{ - char **words; - int nwords; - int start, end, nlen, olen; - int is_command; - int completed = 0; - - nwords = x_cf_glob(flags, xbuf, xep - xbuf, xcp - xbuf, - &start, &end, &words, &is_command); - /* no match */ - if (nwords == 0) { - x_e_putc(BEL); - return; - } - - if (type == CT_LIST) { - x_print_expansions(nwords, words, is_command); - x_redraw(0); - x_free_words(nwords, words); - return; - } - - olen = end - start; - nlen = x_longest_prefix(nwords, words); - /* complete */ - if (nwords == 1 || nlen > olen) { - x_goto(xbuf + start); - x_delete(olen, false); - x_escape(words[0], nlen, x_emacs_putbuf); - x_adjust(); - completed = 1; - } - /* add space if single non-dir match */ - if ((nwords == 1) && (!ISDIRSEP(words[0][nlen - 1]))) { - x_ins(space); - completed = 1; - } - - if (type == CT_COMPLIST && !completed) { - x_print_expansions(nwords, words, is_command); - completed = 1; - } - - if (completed) - x_redraw(0); - - x_free_words(nwords, words); -} - -/* NAME: - * x_adjust - redraw the line adjusting starting point etc. - * - * DESCRIPTION: - * This function is called when we have exceeded the bounds - * of the edit window. It increments x_adj_done so that - * functions like x_ins and x_delete know that we have been - * called and can skip the x_bs() stuff which has already - * been done by x_redraw. - * - * RETURN VALUE: - * None - */ - -static void -x_adjust(void) -{ - x_adj_done++; /* flag the fact that we were called. */ - /* - * we had a problem if the prompt length > xx_cols / 2 - */ - if ((xbp = xcp - (x_displen / 2)) < xbuf) - xbp = xbuf; - xlp_valid = false; - x_redraw(xx_cols); - x_flush(); -} - -static int unget_char = -1; - -static void -x_e_ungetc(int c GCC_FUNC_ATTR(unused)) -{ - unget_char = c; -} - -static int -x_e_getc(void) -{ - int c; - - if (unget_char >= 0) { - c = unget_char; - unget_char = -1; - } else { - if (macroptr) { - c = *macroptr++; - if (!*macroptr) - macroptr = NULL; - } else - c = x_getc(); - } - - return c <= CHARMASK ? c : (c & CHARMASK); -} - -static void -x_e_putc(int c GCC_FUNC_ATTR(unused)) -{ - if (c == '\r' || c == '\n') - x_col = 0; - if (x_col < xx_cols) - { - x_putc(c); - switch(c) - { - case BEL: - break; - case '\r': - case '\n': - break; - case '\b': - x_col--; - break; - default: - x_col++; - break; - } - } - if (x_adj_ok && (x_col < 0 || x_col >= (xx_cols - 2))) - { - x_adjust(); - } -} - -#ifdef DEBUG -static int -x_debug_info(int c GCC_FUNC_ATTR(unused)) -{ - x_flush(); - shellf("\nksh debug:\n"); - shellf("\tx_col == %d,\t\tx_cols == %d,\tx_displen == %d\n", - x_col, xx_cols, x_displen); - shellf("\txcp == 0x%lx,\txep == 0x%lx\n", (long) xcp, (long) xep); - shellf("\txbp == 0x%lx,\txbuf == 0x%lx\n", (long) xbp, (long) xbuf); - shellf("\txlp == 0x%lx\n", (long) xlp); - shellf("\txlp == 0x%lx\n", (long) x_lastcp()); - shellf(newline); - x_redraw(-1); - return 0; -} -#endif - -static void -x_e_puts(const char *s) -{ - int adj = x_adj_done; - - while (*s && adj == x_adj_done) - x_e_putc(*s++); -} - -/* NAME: - * x_set_arg - set an arg value for next function - * - * DESCRIPTION: - * This is a simple implementation of M-[0-9]. - * - * RETURN VALUE: - * KSTD - */ - -static int -x_set_arg(int c GCC_FUNC_ATTR(unused)) -{ - int n = 0; - int first = 1; - - c &= CHARMASK; /* strip command prefix */ - for (; c >= 0 && isdigit(c); c = x_e_getc(), first = 0) - n = n * 10 + (c - '0'); - if (c < 0 || first) { - x_e_putc(BEL); - x_arg = 1; - x_arg_defaulted = 1; - } else { - x_e_ungetc(c); - x_arg = n; - x_arg_defaulted = 0; - } - return KSTD; -} - - -/* Comment or uncomment the current line. */ -static int -x_comment(int c GCC_FUNC_ATTR(unused)) -{ - int oldsize = x_size_str(xbuf); - int len = xep - xbuf; - int ret = x_do_comment(xbuf, xend - xbuf, &len); - - if (ret < 0) - x_e_putc(BEL); - else { - xep = xbuf + len; - *xep = '\0'; - xcp = xbp = xbuf; - x_redraw(oldsize); - if (ret > 0) - return x_newline('\n'); - } - return KSTD; -} - - -/* NAME: - * x_prev_histword - recover word from prev command - * - * DESCRIPTION: - * This function recovers the last word from the previous - * command and inserts it into the current edit line. If a - * numeric arg is supplied then the n'th word from the - * start of the previous command is used. - * - * Bound to M-. - * - * RETURN VALUE: - * KSTD - */ - -static int -x_prev_histword(int c GCC_FUNC_ATTR(unused)) -{ - char *rcp; - char *cp; - - cp = *histptr; - if (!cp) - x_e_putc(BEL); - else if (x_arg_defaulted) { - rcp = &cp[strlen(cp) - 1]; - /* - * ignore white-space after the last word - */ - while (rcp > cp && is_cfs(*rcp)) - rcp--; - while (rcp > cp && !is_cfs(*rcp)) - rcp--; - if (is_cfs(*rcp)) - rcp++; - x_ins(rcp); - } else { - int c; - - rcp = cp; - /* - * ignore white-space at start of line - */ - while (*rcp && is_cfs(*rcp)) - rcp++; - while (x_arg-- > 1) - { - while (*rcp && !is_cfs(*rcp)) - rcp++; - while (*rcp && is_cfs(*rcp)) - rcp++; - } - cp = rcp; - while (*rcp && !is_cfs(*rcp)) - rcp++; - c = *rcp; - *rcp = '\0'; - x_ins(cp); - *rcp = c; - } - return KSTD; -} - -/* Uppercase N(1) words */ -static int -x_fold_upper(int c GCC_FUNC_ATTR(unused)) -{ - return x_fold_case('U'); -} - -/* Lowercase N(1) words */ -static int -x_fold_lower(int c GCC_FUNC_ATTR(unused)) -{ - return x_fold_case('L'); -} - -/* Lowercase N(1) words */ -static int -x_fold_capitalize(int c GCC_FUNC_ATTR(unused)) -{ - return x_fold_case('C'); -} - -/* NAME: - * x_fold_case - convert word to UPPER/lower/Capital case - * - * DESCRIPTION: - * This function is used to implement M-U,M-u,M-L,M-l,M-C and M-c - * to UPPER case, lower case or Capitalize words. - * - * RETURN VALUE: - * None - */ - -static int -x_fold_case(int c GCC_FUNC_ATTR(unused)) -{ - char *cp = xcp; - - if (cp == xep) { - x_e_putc(BEL); - return KSTD; - } - while (x_arg--) { - /* - * first skip over any white-space - */ - while (cp != xep && is_mfs(*cp)) - cp++; - /* - * do the first char on its own since it may be - * a different action than for the rest. - */ - if (cp != xep) { - if (c == 'L') { /* lowercase */ - if (isupper(*cp)) - *cp = tolower(*cp); - } else { /* uppercase, capitalize */ - if (islower(*cp)) - *cp = toupper(*cp); - } - cp++; - } - /* - * now for the rest of the word - */ - while (cp != xep && !is_mfs(*cp)) { - if (c == 'U') { /* uppercase */ - if (islower(*cp)) - *cp = toupper(*cp); - } else { /* lowercase, capitalize */ - if (isupper(*cp)) - *cp = tolower(*cp); - } - cp++; - } - } - x_goto(cp); - return KSTD; -} - -/* NAME: - * x_lastcp - last visible char - * - * SYNOPSIS: - * x_lastcp() - * - * DESCRIPTION: - * This function returns a pointer to that char in the - * edit buffer that will be the last displayed on the - * screen. The sequence: - * - * for (cp = x_lastcp(); cp > xcp; cp) - * x_bs(*--cp); - * - * Will position the cursor correctly on the screen. - * - * RETURN VALUE: - * cp or NULL - */ - -static char * -x_lastcp(void) -{ - char *rcp; - int i; - - if (!xlp_valid) - { - for (i = 0, rcp = xbp; rcp < xep && i < x_displen; rcp++) - i += x_size(*rcp); - xlp = rcp; - } - xlp_valid = true; - return (xlp); -} diff --git a/eval.c b/eval.c deleted file mode 100644 index 6b21163..0000000 --- a/eval.c +++ /dev/null @@ -1,1310 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: eval.c,v 1.24 2004/12/22 18:52:37 millert Exp $ */ - -/* - * Expansion - quoting, separation, substitution, globbing - */ - -#include "sh.h" -#include -#include -#include "ksh_stat.h" - -__RCSID("$MirOS$"); - -#ifdef OPENDIR_DOES_NONDIR -extern DIR *ksh_opendir(const char *d); -#else /* OPENDIR_DOES_NONDIR */ -# define ksh_opendir(d) opendir(d) -#endif /* OPENDIR_DOES_NONDIR */ - -/* - * string expansion - * - * first pass: quoting, IFS separation, ~, ${}, $() and $(()) substitution. - * second pass: alternation ({,}), filename expansion (*?[]). - */ - -/* expansion generator state */ -typedef struct Expand { - /* int type; */ /* see expand() */ - const char *str; /* string */ - union { - const char **strv;/* string[] */ - struct shf *shf;/* file */ - } u; /* source */ - struct tbl *var; /* variable in ${var..} */ - short split; /* split "$@" / call waitlast $() */ -} Expand; - -#define XBASE 0 /* scanning original */ -#define XSUB 1 /* expanding ${} string */ -#define XARGSEP 2 /* ifs0 between "$*" */ -#define XARG 3 /* expanding $*, $@ */ -#define XCOM 4 /* expanding $() */ -#define XNULLSUB 5 /* "$@" when $# is 0 (don't generate word) */ -#define XSUBMID 6 /* middle of expanding ${} */ - -/* States used for field splitting */ -#define IFS_WORD 0 /* word has chars (or quotes) */ -#define IFS_WS 1 /* have seen IFS white-space */ -#define IFS_NWS 2 /* have seen IFS non-white-space */ - -static int varsub(Expand *xp, char *sp, char *word, int *stypep, int *slenp); -static int comsub(Expand *xp, char *cp); -static char *trimsub(char *str, char *pat, int how); -static void glob(char *cp, XPtrV *wp, int markdirs); -static void globit(XString *xs, char **xpp, char *sp, XPtrV *wp, - int check); -static char *maybe_expand_tilde(char *p, XString *dsp, char **dpp, - int isassign); -static char *tilde(char *acp); -static char *homedir(char *name); -static void alt_expand(XPtrV *wp, char *start, char *exp_start, - char *end, int fdo); - -/* compile and expand word */ -char * -substitute(const char *cp, int f) -{ - struct source *s, *sold; - - sold = source; - s = pushs(SWSTR, ATEMP); - s->start = s->str = cp; - source = s; - if (yylex(ONEWORD) != LWORD) - internal_errorf(1, "substitute"); - source = sold; - afree(s, ATEMP); - return evalstr(yylval.cp, f); -} - -/* - * expand arg-list - */ -char ** -eval(char **ap, int f) -{ - XPtrV w; - - if (*ap == NULL) - return ap; - XPinit(w, 32); - XPput(w, NULL); /* space for shell name */ -#ifdef SHARPBANG - XPput(w, NULL); /* and space for one arg */ -#endif - while (*ap != NULL) - expand(*ap++, &w, f); - XPput(w, NULL); -#ifdef SHARPBANG - return (char **) XPclose(w) + 2; -#else - return (char **) XPclose(w) + 1; -#endif -} - -/* - * expand string - */ -char * -evalstr(char *cp, int f) -{ - XPtrV w; - - XPinit(w, 1); - expand(cp, &w, f); - cp = (XPsize(w) == 0) ? null : (char*) *XPptrv(w); - XPfree(w); - return cp; -} - -/* - * expand string - return only one component - * used from iosetup to expand redirection files - */ -char * -evalonestr(char *cp, int f) -{ - XPtrV w; - - XPinit(w, 1); - expand(cp, &w, f); - switch (XPsize(w)) { - case 0: - cp = null; - break; - case 1: - cp = (char*) *XPptrv(w); - break; - default: - cp = evalstr(cp, f&~DOGLOB); - break; - } - XPfree(w); - return cp; -} - -/* for nested substitution: ${var:=$var2} */ -typedef struct SubType { - short stype; /* [=+-?%#] action after expanded word */ - short base; /* begin position of expanded word */ - short f; /* saved value of f (DOPAT, etc) */ - struct tbl *var; /* variable for ${var..} */ - short quote; /* saved value of quote (for ${..[%#]..}) */ - struct SubType *prev; /* old type */ - struct SubType *next; /* poped type (to avoid re-allocating) */ -} SubType; - -void -expand(char *cp, XPtrV *wp, int f) - /* input word */ - /* output words */ - /* DO* flags */ -{ - int UNINITIALIZED(c); - int type; /* expansion type */ - int quote = 0; /* quoted */ - XString ds; /* destination string */ - char *dp, *sp; /* dest., source */ - int fdo, word; /* second pass flags; have word */ - int doblank; /* field splitting of parameter/command subst */ - Expand x; /* expansion variables */ - SubType st_head, *st; - int UNINITIALIZED(newlines); /* For trailing newlines in COMSUB */ - int saw_eq, tilde_ok; - int make_magic; - size_t len; - - if (cp == NULL) - internal_errorf(1, "expand(NULL)"); - /* for alias, readonly, set, typeset commands */ - if ((f & DOVACHECK) && is_wdvarassign(cp)) { - f &= ~(DOVACHECK|DOBLANK|DOGLOB|DOTILDE); - f |= DOASNTILDE; - } - if (Flag(FNOGLOB)) - f &= ~DOGLOB; - if (Flag(FMARKDIRS)) - f |= DOMARKDIRS; - if (Flag(FBRACEEXPAND) && (f & DOGLOB)) - f |= DOBRACE_; - - Xinit(ds, dp, 128, ATEMP); /* init dest. string */ - type = XBASE; - sp = cp; - fdo = 0; - saw_eq = 0; - tilde_ok = (f & (DOTILDE|DOASNTILDE)) ? 1 : 0; /* must be 1/0 */ - doblank = 0; - make_magic = 0; - word = (f&DOBLANK) ? IFS_WS : IFS_WORD; - st_head.next = NULL; - st = &st_head; - - while (1) { - Xcheck(ds, dp); - - switch (type) { - case XBASE: /* original prefixed string */ - c = *sp++; - switch (c) { - case EOS: - c = 0; - break; - case CHAR: - c = *sp++; - break; - case QCHAR: - quote |= 2; /* temporary quote */ - c = *sp++; - break; - case OQUOTE: - word = IFS_WORD; - tilde_ok = 0; - quote = 1; - continue; - case CQUOTE: - quote = 0; - continue; - case COMSUB: - tilde_ok = 0; - if (f & DONTRUNCOMMAND) { - word = IFS_WORD; - *dp++ = '$'; *dp++ = '('; - while (*sp != '\0') { - Xcheck(ds, dp); - *dp++ = *sp++; - } - *dp++ = ')'; - } else { - type = comsub(&x, sp); - if (type == XCOM && (f&DOBLANK)) - doblank++; - sp = strchr(sp, 0) + 1; - newlines = 0; - } - continue; - case EXPRSUB: - word = IFS_WORD; - tilde_ok = 0; - if (f & DONTRUNCOMMAND) { - *dp++ = '$'; *dp++ = '('; *dp++ = '('; - while (*sp != '\0') { - Xcheck(ds, dp); - *dp++ = *sp++; - } - *dp++ = ')'; *dp++ = ')'; - } else { - struct tbl v; - char *p; - - v.flag = DEFINED|ISSET|INTEGER; - v.type = 10; /* not default */ - v.name[0] = '\0'; - v_evaluate(&v, substitute(sp, 0), - KSH_UNWIND_ERROR); - sp = strchr(sp, 0) + 1; - for (p = str_val(&v); *p; ) { - Xcheck(ds, dp); - *dp++ = *p++; - } - } - continue; - case OSUBST: /* ${{#}var{:}[=+-?#%]word} */ - /* format is: - * OSUBST [{x] plain-variable-part \0 - * compiled-word-part CSUBST [}x] - * This is where all syntax checking gets done... - */ - { - char *varname = ++sp; /* skip the { or x (}) */ - int stype; - int slen; - - sp = strchr(sp, '\0') + 1; /* skip variable */ - type = varsub(&x, varname, sp, &stype, &slen); - if (type < 0) { - char endc; - char *str, *end; - - sp = varname - 2; /* restore sp */ - end = (char *) wdscan(sp, CSUBST); - /* ({) the } or x is already skipped */ - endc = *end; - *end = EOS; - str = snptreef(NULL, 64, "%S", sp); - *end = endc; - errorf("%s: bad substitution", str); - } - if (f&DOBLANK) - doblank++; - tilde_ok = 0; - if (type == XBASE) { /* expand? */ - if (!st->next) { - SubType *newst; - - newst = (SubType *) alloc( - sizeof(SubType), ATEMP); - newst->next = NULL; - newst->prev = st; - st->next = newst; - } - st = st->next; - st->stype = stype; - st->base = Xsavepos(ds, dp); - st->f = f; - st->var = x.var; - st->quote = quote; - /* skip qualifier(s) */ - if (stype) - sp += slen; - switch (stype & 0x7f) { - case '#': - case '%': - /* ! DOBLANK,DOBRACE_,DOTILDE */ - f = DOPAT | (f&DONTRUNCOMMAND) - | DOTEMP_; - quote = 0; - /* Prepend open pattern (so | - * in a trim will work as - * expected) - */ - *dp++ = MAGIC; - *dp++ = (char)('@' + 0x80); - break; - case '=': - /* Enabling tilde expansion - * after :'s here is - * non-standard ksh, but is - * consistent with rules for - * other assignments. Not - * sure what POSIX thinks of - * this. - * Not doing tilde expansion - * for integer variables is a - * non-POSIX thing - makes - * sense though, since ~ is - * a arithmetic operator. - */ - if (!(x.var->flag & INTEGER)) - f |= DOASNTILDE|DOTILDE; - f |= DOTEMP_; - /* These will be done after the - * value has been assigned. - */ - f &= ~(DOBLANK|DOGLOB|DOBRACE_); - tilde_ok = 1; - break; - case '?': - f &= ~DOBLANK; - f |= DOTEMP_; - /* fall through */ - default: - /* Enable tilde expansion */ - tilde_ok = 1; - f |= DOTILDE; - } - } else - /* skip word */ - sp = (char *) wdscan(sp, CSUBST); - continue; - } - case CSUBST: /* only get here if expanding word */ - sp++; /* ({) skip the } or x */ - tilde_ok = 0; /* in case of ${unset:-} */ - *dp = '\0'; - quote = st->quote; - f = st->f; - if (f&DOBLANK) - doblank--; - switch (st->stype&0x7f) { - case '#': - case '%': - /* Append end-pattern */ - *dp++ = MAGIC; *dp++ = ')'; *dp = '\0'; - dp = Xrestpos(ds, dp, st->base); - /* Must use st->var since calling - * global would break things - * like x[i+=1]. - */ - x.str = trimsub(str_val(st->var), - dp, st->stype); - type = XSUB; - if (f&DOBLANK) - doblank++; - st = st->prev; - continue; - case '=': - /* Restore our position and substitute - * the value of st->var (may not be - * the assigned value in the presence - * of integer/right-adj/etc attributes). - */ - dp = Xrestpos(ds, dp, st->base); - /* Must use st->var since calling - * global would cause with things - * like x[i+=1] to be evaluated twice. - */ - /* Note: not exported by FEXPORT - * in at&t ksh. - */ - /* XXX POSIX says readonly is only - * fatal for special builtins (setstr - * does readonly check). - */ - len = strlen(dp) + 1; - setstr(st->var, - debunk((char *) alloc(len, ATEMP), - dp, len), - KSH_UNWIND_ERROR); - x.str = str_val(st->var); - type = XSUB; - if (f&DOBLANK) - doblank++; - st = st->prev; - continue; - case '?': - { - char *s = Xrestpos(ds, dp, st->base); - - errorf("%s: %s", st->var->name, - dp == s ? - "parameter null or not set" - : (debunk(s, s, strlen(s) + 1), s)); - } - } - st = st->prev; - type = XBASE; - continue; - - case OPAT: /* open pattern: *(foo|bar) */ - /* Next char is the type of pattern */ - make_magic = 1; - c = *sp++ + 0x80; - break; - - case SPAT: /* pattern separator (|) */ - make_magic = 1; - c = '|'; - break; - - case CPAT: /* close pattern */ - make_magic = 1; - c = /*(*/ ')'; - break; - } - break; - - case XNULLSUB: - /* Special case for "$@" (and "${foo[@]}") - no - * word is generated if $# is 0 (unless there is - * other stuff inside the quotes). - */ - type = XBASE; - if (f&DOBLANK) { - doblank--; - /* not really correct: x=; "$x$@" should - * generate a null argument and - * set A; "${@:+}" shouldn't. - */ - if (dp == Xstring(ds, dp)) - word = IFS_WS; - } - continue; - - case XSUB: - case XSUBMID: - if ((c = *x.str++) == 0) { - type = XBASE; - if (f&DOBLANK) - doblank--; - continue; - } - break; - - case XARGSEP: - type = XARG; - quote = 1; - case XARG: - if ((c = *x.str++) == '\0') { - /* force null words to be created so - * set -- '' 2 ''; foo "$@" will do - * the right thing - */ - if (quote && x.split) - word = IFS_WORD; - if ((x.str = *x.u.strv++) == NULL) { - type = XBASE; - if (f&DOBLANK) - doblank--; - continue; - } - c = ifs0; - if (c == 0) { - if (quote && !x.split) - continue; - c = ' '; - } - if (quote && x.split) { - /* terminate word for "$@" */ - type = XARGSEP; - quote = 0; - } - } - break; - - case XCOM: - if (newlines) { /* Spit out saved nl's */ - c = '\n'; - --newlines; - } else { - while ((c = shf_getc(x.u.shf)) == 0 || c == '\n') - if (c == '\n') - newlines++; /* Save newlines */ - if (newlines && c != EOF) { - shf_ungetc(c, x.u.shf); - c = '\n'; - --newlines; - } - } - if (c == EOF) { - newlines = 0; - shf_close(x.u.shf); - if (x.split) - subst_exstat = waitlast(); - type = XBASE; - if (f&DOBLANK) - doblank--; - continue; - } - break; - } - - /* check for end of word or IFS separation */ - if (c == 0 || (!quote && (f & DOBLANK) && doblank && !make_magic - && ctype(c, C_IFS))) - { - /* How words are broken up: - * | value of c - * word | ws nws 0 - * ----------------------------------- - * IFS_WORD w/WS w/NWS w - * IFS_WS -/WS w/NWS - - * IFS_NWS -/NWS w/NWS w - * (w means generate a word) - * Note that IFS_NWS/0 generates a word (at&t ksh - * doesn't do this, but POSIX does). - */ - if (word == IFS_WORD - || (!ctype(c, C_IFSWS) && c && word == IFS_NWS)) - { - char *p; - - *dp++ = '\0'; - p = Xclose(ds, dp); - if (fdo & DOBRACE_) - /* also does globbing */ - alt_expand(wp, p, p, - p + Xlength(ds, (dp - 1)), - fdo | (f & DOMARKDIRS)); - else if (fdo & DOGLOB) - glob(p, wp, f & DOMARKDIRS); - else if ((f & DOPAT) || !(fdo & DOMAGIC_)) - XPput(*wp, p); - else - XPput(*wp, debunk(p, p, strlen(p) + 1)); - fdo = 0; - saw_eq = 0; - tilde_ok = (f & (DOTILDE|DOASNTILDE)) ? 1 : 0; - if (c != 0) - Xinit(ds, dp, 128, ATEMP); - } - if (c == 0) - return; - if (word != IFS_NWS) - word = ctype(c, C_IFSWS) ? IFS_WS : IFS_NWS; - } else { - if (type == XSUB) { - if (word == IFS_NWS && Xlength(ds, dp) == 0) { - char *p = strdup(""); - - if (p == NULL) - internal_errorf(1, "unable " - "to allocate memory"); - XPput(*wp, p); - } - type = XSUBMID; - } - /* age tilde_ok info - ~ code tests second bit */ - tilde_ok <<= 1; - /* mark any special second pass chars */ - if (!quote) - switch (c) { - case '[': - case NOT: - case '-': - case ']': - /* For character classes - doesn't hurt - * to have magic !,-,]'s outside of - * [...] expressions. - */ - if (f & (DOPAT | DOGLOB)) { - fdo |= DOMAGIC_; - if (c == '[') - fdo |= f & DOGLOB; - *dp++ = MAGIC; - } - break; - case '*': - case '?': - if (f & (DOPAT | DOGLOB)) { - fdo |= DOMAGIC_ | (f & DOGLOB); - *dp++ = MAGIC; - } - break; - case OBRACE: - case ',': - case CBRACE: - if ((f & DOBRACE_) && (c == OBRACE - || (fdo & DOBRACE_))) - { - fdo |= DOBRACE_|DOMAGIC_; - *dp++ = MAGIC; - } - break; - case '=': - /* Note first unquoted = for ~ */ - if (!(f & DOTEMP_) && !saw_eq) { - saw_eq = 1; - tilde_ok = 1; - } - break; - case PATHSEP: /* : */ - /* Note unquoted : for ~ */ - if (!(f & DOTEMP_) && (f & DOASNTILDE)) - tilde_ok = 1; - break; - case '~': - /* tilde_ok is reset whenever - * any of ' " $( $(( ${ } are seen. - * Note that tilde_ok must be preserved - * through the sequence ${A=a=}~ - */ - if (type == XBASE - && (f & (DOTILDE|DOASNTILDE)) - && (tilde_ok & 2)) - { - char *p, *dp_x; - - dp_x = dp; - p = maybe_expand_tilde(sp, - &ds, &dp_x, - f & DOASNTILDE); - if (p) { - if (dp != dp_x) - word = IFS_WORD; - dp = dp_x; - sp = p; - continue; - } - } - break; - } - else - quote &= ~2; /* undo temporary */ - - if (make_magic) { - make_magic = 0; - fdo |= DOMAGIC_ | (f & DOGLOB); - *dp++ = MAGIC; - } else if (ISMAGIC(c)) { - fdo |= DOMAGIC_; - *dp++ = MAGIC; - } - *dp++ = c; /* save output char */ - word = IFS_WORD; - } - } -} - -/* - * Prepare to generate the string returned by ${} substitution. - */ -static int -varsub(Expand *xp, char *sp, char *word, int *stypep, int *slenp) - - - - /* becomes qualifier type */ - /* " " len (=, :=, etc.) valid iff *stypep != 0 */ -{ - int c; - int state; /* next state: XBASE, XARG, XSUB, XNULLSUB */ - int stype; /* substitution type */ - int slen; - char *p; - struct tbl *vp; - - if (sp[0] == '\0') /* Bad variable name */ - return -1; - - xp->var = NULL; - - /* ${#var}, string length or array size */ - if (sp[0] == '#' && (c = sp[1]) != '\0') { - int zero_ok = 0; - - /* Can't have any modifiers for ${#...} */ - if (*word != CSUBST) - return -1; - sp++; - /* Check for size of array */ - if ((p=strchr(sp,'[')) && (p[1]=='*'||p[1]=='@') && p[2]==']') { - int n = 0; - int max = 0; - vp = global(arrayname(sp)); - if (vp->flag & (ISSET|ARRAY)) - zero_ok = 1; - for (; vp; vp = vp->u.array) - if (vp->flag & ISSET) { - max = vp->index + 1; - n++; - } - c = n; /* ksh88/ksh93 go for number, not max index */ - } else if (c == '*' || c == '@') - c = e->loc->argc; - else { - p = str_val(global(sp)); - zero_ok = p != null; - c = strlen(p); - } - if (Flag(FNOUNSET) && c == 0 && !zero_ok) - errorf("%s: parameter not set", sp); - *stypep = 0; /* unqualified variable/string substitution */ - xp->str = str_save(ulton((unsigned long)c, 10), ATEMP); - return XSUB; - } - - /* Check for qualifiers in word part */ - stype = 0; - c = word[slen = 0] == CHAR ? word[1] : 0; - if (c == ':') { - slen += 2; - stype = 0x80; - c = word[slen + 0] == CHAR ? word[slen + 1] : 0; - } - if (ctype(c, C_SUBOP1)) { - slen += 2; - stype |= c; - } else if (ctype(c, C_SUBOP2)) { /* Note: ksh88 allows :%, :%%, etc */ - slen += 2; - stype = c; - if (word[slen + 0] == CHAR && c == word[slen + 1]) { - stype |= 0x80; - slen += 2; - } - } else if (stype) /* : is not ok */ - return -1; - if (!stype && *word != CSUBST) - return -1; - *stypep = stype; - *slenp = slen; - - c = sp[0]; - if (c == '*' || c == '@') { - switch (stype & 0x7f) { - case '=': /* can't assign to a vector */ - case '%': /* can't trim a vector (yet) */ - case '#': - return -1; - } - if (e->loc->argc == 0) { - xp->str = null; - xp->var = global(sp); - state = c == '@' ? XNULLSUB : XSUB; - } else { - xp->u.strv = (const char **) e->loc->argv + 1; - xp->str = *xp->u.strv++; - xp->split = c == '@'; /* $@ */ - state = XARG; - } - } else { - if ((p=strchr(sp,'[')) && (p[1]=='*'||p[1]=='@') && p[2]==']') { - XPtrV wv; - - switch (stype & 0x7f) { - case '=': /* can't assign to a vector */ - case '%': /* can't trim a vector (yet) */ - case '#': - case '?': - return -1; - } - XPinit(wv, 32); - vp = global(arrayname(sp)); - for (; vp; vp = vp->u.array) { - if (!(vp->flag&ISSET)) - continue; - XPput(wv, str_val(vp)); - } - if (XPsize(wv) == 0) { - xp->str = null; - state = p[1] == '@' ? XNULLSUB : XSUB; - XPfree(wv); - } else { - XPput(wv, 0); - xp->u.strv = (const char **) XPptrv(wv); - xp->str = *xp->u.strv++; - xp->split = p[1] == '@'; /* ${foo[@]} */ - state = XARG; - } - } else { - /* Can't assign things like $! or $1 */ - if ((stype & 0x7f) == '=' - && (ctype(*sp, C_VAR1) || digit(*sp))) - return -1; - xp->var = global(sp); - xp->str = str_val(xp->var); - state = XSUB; - } - } - - c = stype&0x7f; - /* test the compiler's code generator */ - if (ctype(c, C_SUBOP2) || - (((stype&0x80) ? *xp->str=='\0' : xp->str==null) ? /* undef? */ - c == '=' || c == '-' || c == '?' : c == '+')) - state = XBASE; /* expand word instead of variable value */ - if (Flag(FNOUNSET) && xp->str == null - && (ctype(c, C_SUBOP2) || (state != XBASE && c != '+'))) - errorf("%s: parameter not set", sp); - return state; -} - -/* - * Run the command in $(...) and read its output. - */ -static int -comsub(Expand *xp, char *cp) -{ - Source *s, *sold; - struct op *t; - struct shf *shf; - - s = pushs(SSTRING, ATEMP); - s->start = s->str = cp; - sold = source; - t = compile(s); - source = sold; - - if (t == NULL) - return XBASE; - - if (t != NULL && t->type == TCOM && /* $(args == NULL && *t->vars == NULL && t->ioact != NULL) { - struct ioword *io = *t->ioact; - char *name; - - if ((io->flag&IOTYPE) != IOREAD) - errorf("funny $() command: %s", - snptreef(NULL, 32, "%R", io)); - shf = shf_open(name = evalstr(io->name, DOTILDE), O_RDONLY, 0, - SHF_MAPHI|SHF_CLEXEC); - if (shf == NULL) - errorf("%s: cannot open $() input", name); - xp->split = 0; /* no waitlast() */ - } else { - int ofd1, pv[2]; - openpipe(pv); - shf = shf_fdopen(pv[0], SHF_RD, NULL); - ofd1 = savefd(1, 0); /* fd 1 may be closed... */ - if (pv[1] != 1) { - ksh_dup2(pv[1], 1, false); - close(pv[1]); - } - execute(t, XFORK|XXCOM|XPIPEO); - restfd(1, ofd1); - startlast(); - xp->split = 1; /* waitlast() */ - } - - xp->u.shf = shf; - return XCOM; -} - -/* - * perform #pattern and %pattern substitution in ${} - */ - -static char * -trimsub(char *str, char *pat, int how) -{ - char *end = strchr(str, 0); - char *p, c; - - switch (how&0xff) { /* UCHAR_MAX maybe? */ - case '#': /* shortest at beginning */ - for (p = str; p <= end; p++) { - c = *p; *p = '\0'; - if (gmatch(str, pat, false)) { - *p = c; - return p; - } - *p = c; - } - break; - case '#'|0x80: /* longest match at beginning */ - for (p = end; p >= str; p--) { - c = *p; *p = '\0'; - if (gmatch(str, pat, false)) { - *p = c; - return p; - } - *p = c; - } - break; - case '%': /* shortest match at end */ - for (p = end; p >= str; p--) { - if (gmatch(p, pat, false)) - return str_nsave(str, p - str, ATEMP); - } - break; - case '%'|0x80: /* longest match at end */ - for (p = str; p <= end; p++) { - if (gmatch(p, pat, false)) - return str_nsave(str, p - str, ATEMP); - } - break; - } - - return str; /* no match, return string */ -} - -/* - * glob - * Name derived from V6's /etc/glob, the program that expanded filenames. - */ - -/* XXX cp not const 'cause slashes are temporarily replaced with nulls... */ -static void -glob(char *cp, XPtrV *wp, int markdirs) -{ - int oldsize = XPsize(*wp); - - if (glob_str(cp, wp, markdirs) == 0) - XPput(*wp, debunk(cp, cp, strlen(cp) + 1)); - else - qsortp(XPptrv(*wp) + oldsize, (size_t)(XPsize(*wp) - oldsize), - xstrcmp); -} - -#define GF_NONE 0 -#define GF_EXCHECK BIT(0) /* do existence check on file */ -#define GF_GLOBBED BIT(1) /* some globbing has been done */ -#define GF_MARKDIR BIT(2) /* add trailing / to directories */ - -/* Apply file globbing to cp and store the matching files in wp. Returns - * the number of matches found. - */ -int -glob_str(char *cp, XPtrV *wp, int markdirs) -{ - int oldsize = XPsize(*wp); - XString xs; - char *xp; - - Xinit(xs, xp, 256, ATEMP); - globit(&xs, &xp, cp, wp, markdirs ? GF_MARKDIR : GF_NONE); - Xfree(xs, xp); - - return XPsize(*wp) - oldsize; -} - -static void -globit(XString *xs, char **xpp, char *sp, XPtrV *wp, int check) - /* dest string */ - /* ptr to dest end */ - /* source path */ - /* output list */ - /* GF_* flags */ -{ - char *np; /* next source component */ - char *xp = *xpp; - char *se; - char odirsep; - - /* This to allow long expansions to be interrupted */ - intrcheck(); - - if (sp == NULL) { /* end of source path */ - /* We only need to check if the file exists if a pattern - * is followed by a non-pattern (eg, foo*x/bar; no check - * is needed for foo* since the match must exist) or if - * any patterns were expanded and the markdirs option is set. - * Symlinks make things a bit tricky... - */ - if ((check & GF_EXCHECK) - || ((check & GF_MARKDIR) && (check & GF_GLOBBED))) - { -#define stat_check() \ - (stat_done ? stat_done : \ - ((stat_done = stat(Xstring(*xs, xp), &statb) < 0) \ - ? -1 : 1)) - struct stat lstatb, statb; - int stat_done = 0; /* -1: failed, 1 ok */ - - if (lstat(Xstring(*xs, xp), &lstatb) < 0) - return; - /* special case for systems which strip trailing - * slashes from regular files (eg, /etc/passwd/). - * SunOS 4.1.3 does this... - */ - if ((check & GF_EXCHECK) && xp > Xstring(*xs, xp) - && ISDIRSEP(xp[-1]) && !S_ISDIR(lstatb.st_mode) -#ifdef S_ISLNK - && (!S_ISLNK(lstatb.st_mode) - || stat_check() < 0 - || !S_ISDIR(statb.st_mode)) -#endif /* S_ISLNK */ - ) - return; - /* Possibly tack on a trailing / if there isn't already - * one and if the file is a directory or a symlink to a - * directory - */ - if (((check & GF_MARKDIR) && (check & GF_GLOBBED)) - && xp > Xstring(*xs, xp) && !ISDIRSEP(xp[-1]) - && (S_ISDIR(lstatb.st_mode) -#ifdef S_ISLNK - || (S_ISLNK(lstatb.st_mode) - && stat_check() > 0 - && S_ISDIR(statb.st_mode)) -#endif /* S_ISLNK */ - )) - { - *xp++ = DIRSEP; - *xp = '\0'; - } - } - XPput(*wp, str_nsave(Xstring(*xs, xp), Xlength(*xs, xp), - ATEMP)); - return; - } - - if (xp > Xstring(*xs, xp)) - *xp++ = DIRSEP; - while (ISDIRSEP(*sp)) { - Xcheck(*xs, xp); - *xp++ = *sp++; - } - np = ksh_strchr_dirsep(sp); - if (np != NULL) { - se = np; - odirsep = *np; /* don't assume DIRSEP, can be multiple kinds */ - *np++ = '\0'; - } else { - odirsep = '\0'; /* keep gcc quiet */ - se = sp + strlen(sp); - } - - - /* Check if sp needs globbing - done to avoid pattern checks for strings - * containing MAGIC characters, open ['s without the matching close ], - * etc. (otherwise opendir() will be called which may fail because the - * directory isn't readable - if no globbing is needed, only execute - * permission should be required (as per POSIX)). - */ - if (!has_globbing(sp, se)) { - XcheckN(*xs, xp, se - sp + 1); - debunk(xp, sp, Xnleft(*xs, xp)); - xp += strlen(xp); - *xpp = xp; - globit(xs, xpp, np, wp, check); - } else { - DIR *dirp; - struct dirent *d; - char *name; - int len; - int prefix_len; - - /* xp = *xpp; copy_non_glob() may have re-alloc'd xs */ - *xp = '\0'; - prefix_len = Xlength(*xs, xp); - dirp = ksh_opendir(prefix_len ? Xstring(*xs, xp) : "."); - if (dirp == NULL) - goto Nodir; - while ((d = readdir(dirp)) != NULL) { - name = d->d_name; - if (name[0] == '.' && - (name[1] == 0 || (name[1] == '.' && name[2] == 0))) - continue; /* always ignore . and .. */ - if ((*name == '.' && *sp != '.') - || !gmatch(name, sp, true)) - continue; - - len = strlen(d->d_name) + 1; - XcheckN(*xs, xp, len); - memcpy(xp, name, len); - *xpp = xp + len - 1; - globit(xs, xpp, np, wp, - (check & GF_MARKDIR) | GF_GLOBBED - | (np ? GF_EXCHECK : GF_NONE)); - xp = Xstring(*xs, xp) + prefix_len; - } - closedir(dirp); - Nodir:; - } - - if (np != NULL) - *--np = odirsep; -} - -/* remove MAGIC from string */ -char * -debunk(char *dp, const char *sp, size_t dlen) -{ - char *d, *s; - - if ((s = strchr(sp, MAGIC))) { - if ((size_t)(s - sp) >= dlen) - return dp; - memcpy(dp, sp, s - sp); - for (d = dp + (s - sp); *s && ((size_t)(d - dp) < dlen); s++) - if (!ISMAGIC(*s) || !(*++s & 0x80) - || !strchr("*+?@! ", *s & 0x7f)) - *d++ = *s; - else { - /* extended pattern operators: *+?@! */ - if ((*s & 0x7f) != ' ') - *d++ = *s & 0x7f; - if ((size_t)(d - dp) < dlen) - *d++ = '('; - } - *d = '\0'; - } else if (dp != sp) - strlcpy(dp, sp, dlen); - return dp; -} - -/* Check if p is an unquoted name, possibly followed by a / or :. If so - * puts the expanded version in *dcp,dp and returns a pointer in p just - * past the name, otherwise returns 0. - */ -static char * -maybe_expand_tilde(char *p, XString *dsp, char **dpp, int isassign) -{ - XString ts; - char *dp = *dpp; - char *tp, *r; - - Xinit(ts, tp, 16, ATEMP); - /* : only for DOASNTILDE form */ - while (p[0] == CHAR && !ISDIRSEP(p[1]) - && (!isassign || p[1] != PATHSEP)) - { - Xcheck(ts, tp); - *tp++ = p[1]; - p += 2; - } - *tp = '\0'; - r = (p[0] == EOS || p[0] == CHAR || p[0] == CSUBST) ? tilde(Xstring(ts, tp)) : NULL; - Xfree(ts, tp); - if (r) { - while (*r) { - Xcheck(*dsp, dp); - if (ISMAGIC(*r)) - *dp++ = MAGIC; - *dp++ = *r++; - } - *dpp = dp; - r = p; - } - return r; -} - -/* - * tilde expansion - * - * based on a version by Arnold Robbins - */ - -static char * -tilde(char *cp) -{ - char *dp; - - if (cp[0] == '\0') - dp = str_val(global("HOME")); - else if (cp[0] == '+' && cp[1] == '\0') - dp = str_val(global("PWD")); - else if (cp[0] == '-' && cp[1] == '\0') - dp = str_val(global("OLDPWD")); - else - dp = homedir(cp); - /* If HOME, PWD or OLDPWD are not set, don't expand ~ */ - if (dp == null) - dp = NULL; - return dp; -} - -/* - * map userid to user's home directory. - * note that 4.3's getpw adds more than 6K to the shell, - * and the YP version probably adds much more. - * we might consider our own version of getpwnam() to keep the size down. - */ - -static char * -homedir(char *name) -{ - struct tbl *ap; - - ap = tenter(&homedirs, name, hash(name)); - if (!(ap->flag & ISSET)) { - struct passwd *pw; - - pw = getpwnam(name); - if (pw == NULL) - return NULL; - ap->val.s = str_save(pw->pw_dir, APERM); - ap->flag |= DEFINED|ISSET|ALLOC; - } - return ap->val.s; -} - -static void -alt_expand(XPtrV *wp, char *start, char *exp_start, char *end, int fdo) -{ - int UNINITIALIZED(count); - char *brace_start, *brace_end, *UNINITIALIZED(comma); - char *field_start; - char *p; - - /* search for open brace */ - for (p = exp_start; (p = strchr(p, MAGIC)) && p[1] != OBRACE; p += 2) - ; - brace_start = p; - - /* find matching close brace, if any */ - if (p) { - comma = NULL; - count = 1; - for (p += 2; *p && count; p++) { - if (ISMAGIC(*p)) { - if (*++p == OBRACE) - count++; - else if (*p == CBRACE) - --count; - else if (*p == ',' && count == 1) - comma = p; - } - } - } - /* no valid expansions... */ - if (!p || count != 0) { - /* Note that given a{{b,c} we do not expand anything (this is - * what at&t ksh does. This may be changed to do the {b,c} - * expansion. } - */ - if (fdo & DOGLOB) - glob(start, wp, fdo & DOMARKDIRS); - else - XPput(*wp, debunk(start, start, end - start)); - return; - } - brace_end = p; - if (!comma) { - alt_expand(wp, start, brace_end, end, fdo); - return; - } - - /* expand expression */ - field_start = brace_start + 2; - count = 1; - for (p = brace_start + 2; p != brace_end; p++) { - if (ISMAGIC(*p)) { - if (*++p == OBRACE) - count++; - else if ((*p == CBRACE && --count == 0) - || (*p == ',' && count == 1)) - { - char *new; - int l1, l2, l3; - - l1 = brace_start - start; - l2 = (p - 1) - field_start; - l3 = end - brace_end; - new = (char *) alloc(l1 + l2 + l3 + 1, ATEMP); - memcpy(new, start, l1); - memcpy(new + l1, field_start, l2); - memcpy(new + l1 + l2, brace_end, l3); - new[l1 + l2 + l3] = '\0'; - alt_expand(wp, new, new + l1, - new + l1 + l2 + l3, fdo); - field_start = p + 1; - } - } - } - return; -} diff --git a/exec.c b/exec.c deleted file mode 100644 index 5e0bfc3..0000000 --- a/exec.c +++ /dev/null @@ -1,1497 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: exec.c,v 1.35 2004/12/18 22:35:41 millert Exp $ */ - -/* - * execute command tree - */ - -#include "sh.h" -#include "c_test.h" -#include -#include "ksh_stat.h" - -__RCSID("$MirOS$"); - -static int comexec(struct op *t, struct tbl *volatile tp, char **ap, - int volatile flags); -static void scriptexec(struct op *tp, char **ap); -static int call_builtin(struct tbl *tp, char **wp); -static int iosetup(struct ioword *iop, struct tbl *tp); -static int herein(const char *content, int sub); -static char *do_selectargs(char **ap, bool print_menu); -static int dbteste_isa(Test_env *te, Test_meta meta); -static const char *dbteste_getopnd(Test_env *te, Test_op op, - int do_eval); -static int dbteste_eval(Test_env *te, Test_op op, const char *opnd1, - const char *opnd2, int do_eval); -static void dbteste_error(Test_env *te, int offset, const char *msg); - - -/* - * handle systems that don't have F_SETFD - */ -#ifndef F_SETFD -# ifndef MAXFD -# define MAXFD 64 -# endif -/* a bit field would be smaller, but this will work */ -static char clexec_tab[MAXFD+1]; -#endif - -/* - * execute command tree - */ -int -execute(struct op *volatile t, volatile int flags) - - /* if XEXEC don't fork */ -{ - int i; - volatile int rv = 0; - int pv[2]; - char ** volatile ap; - char *s, *cp; - struct ioword **iowp; - struct tbl *tp = NULL; - - if (t == NULL) - return 0; - - /* Is this the end of a pipeline? If so, we want to evaluate the - * command arguments - bool eval_done = false; - if ((flags&XFORK) && !(flags&XEXEC) && (flags&XPCLOSE)) { - eval_done = true; - tp = eval_execute_args(t, &ap); - } - */ - if ((flags&XFORK) && !(flags&XEXEC) && t->type != TPIPE) - return exchild(t, flags & ~XTIME, -1); /* run in sub-process */ - - newenv(E_EXEC); - if (trap) - runtraps(0); - - if (t->type == TCOM) { - /* Clear subst_exstat before argument expansion. Used by - * null commands (see comexec() and c_eval()) and by c_set(). - */ - subst_exstat = 0; - - current_lineno = t->lineno; /* for $LINENO */ - - /* POSIX says expand command words first, then redirections, - * and assignments last.. - */ - ap = eval(t->args, t->u.evalflags | DOBLANK | DOGLOB | DOTILDE); - if (flags & XTIME) - /* Allow option parsing (bizarre, but POSIX) */ - timex_hook(t, &ap); - if (Flag(FXTRACE) && ap[0]) { - shf_fprintf(shl_out, "%s", - substitute(str_val(global("PS4")), 0)); - for (i = 0; ap[i]; i++) - shf_fprintf(shl_out, "%s%s", ap[i], - ap[i + 1] ? space : newline); - shf_flush(shl_out); - } - if (ap[0]) - tp = findcom(ap[0], FC_BI|FC_FUNC); - } - flags &= ~XTIME; - - if (t->ioact != NULL || t->type == TPIPE || t->type == TCOPROC) { - e->savefd = (short *) alloc(sizeofN(short, NUFILE), ATEMP); - /* initialize to not redirected */ - memset(e->savefd, 0, sizeofN(short, NUFILE)); - } - - /* do redirection, to be restored in quitenv() */ - if (t->ioact != NULL) - for (iowp = t->ioact; *iowp != NULL; iowp++) { - if (iosetup(*iowp, tp) < 0) { - exstat = rv = 1; - /* Redirection failures for special commands - * cause (non-interactive) shell to exit. - */ - if (tp && tp->type == CSHELL - && (tp->flag & SPEC_BI)) - errorf(null); - /* Deal with FERREXIT, quitenv(), etc. */ - goto Break; - } - } - - switch(t->type) { - case TCOM: - rv = comexec(t, tp, ap, flags); - break; - - case TPAREN: - rv = execute(t->left, flags|XFORK); - break; - - case TPIPE: - flags |= XFORK; - flags &= ~XEXEC; - e->savefd[0] = savefd(0, 0); - (void) ksh_dup2(e->savefd[0], 0, false); /* stdin of first */ - e->savefd[1] = savefd(1, 0); - while (t->type == TPIPE) { - openpipe(pv); - (void) ksh_dup2(pv[1], 1, false); /* stdout of curr */ - /* Let exchild() close pv[0] in child - * (if this isn't done, commands like - * (: ; cat /etc/termcap) | sleep 1 - * will hang forever). - */ - exchild(t->left, flags|XPIPEO|XCCLOSE, pv[0]); - (void) ksh_dup2(pv[0], 0, false); /* stdin of next */ - closepipe(pv); - flags |= XPIPEI; - t = t->right; - } - restfd(1, e->savefd[1]); /* stdout of last */ - e->savefd[1] = 0; /* no need to re-restore this */ - /* Let exchild() close 0 in parent, after fork, before wait */ - i = exchild(t, flags|XPCLOSE, 0); - if (!(flags&XBGND) && !(flags&XXCOM)) - rv = i; - break; - - case TLIST: - while (t->type == TLIST) { - execute(t->left, flags & XERROK); - t = t->right; - } - rv = execute(t, flags & XERROK); - break; - - case TCOPROC: - { -# ifdef JOB_SIGS - sigset_t omask; -# endif /* JOB_SIGS */ - -# ifdef JOB_SIGS - /* Block sigchild as we are using things changed in the - * signal handler - */ - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); - e->type = E_ERRH; - i = ksh_sigsetjmp(e->jbuf, 0); - if (i) { - sigprocmask(SIG_SETMASK, &omask, NULL); - quitenv(NULL); - unwind(i); - /*NOTREACHED*/ - } -# endif /* JOB_SIGS */ - /* Already have a (live) co-process? */ - if (coproc.job && coproc.write >= 0) - errorf("coprocess already exists"); - - /* Can we re-use the existing co-process pipe? */ - coproc_cleanup(true); - - /* do this before opening pipes, in case these fail */ - e->savefd[0] = savefd(0, 0); - e->savefd[1] = savefd(1, 0); - - openpipe(pv); - if (pv[0] != 0) { - ksh_dup2(pv[0], 0, false); - close(pv[0]); - } - coproc.write = pv[1]; - coproc.job = NULL; - - if (coproc.readw >= 0) - ksh_dup2(coproc.readw, 1, false); - else { - openpipe(pv); - coproc.read = pv[0]; - ksh_dup2(pv[1], 1, false); - coproc.readw = pv[1]; /* closed before first read */ - coproc.njobs = 0; - /* create new coprocess id */ - ++coproc.id; - } -# ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); - e->type = E_EXEC; /* no more need for error handler */ -# endif /* JOB_SIGS */ - - /* exchild() closes coproc.* in child after fork, - * will also increment coproc.njobs when the - * job is actually created. - */ - flags &= ~XEXEC; - exchild(t->left, flags|XBGND|XFORK|XCOPROC|XCCLOSE, - coproc.readw); - break; - } - - case TASYNC: - /* XXX non-optimal, I think - "(foo &)", forks for (), - * forks again for async... parent should optimize - * this to "foo &"... - */ - rv = execute(t->left, (flags&~XEXEC)|XBGND|XFORK); - break; - - case TOR: - case TAND: - rv = execute(t->left, XERROK); - if (t->right != NULL && (rv == 0) == (t->type == TAND)) - rv = execute(t->right, flags & XERROK); - else - flags |= XERROK; - break; - - case TBANG: - rv = !execute(t->right, XERROK); - break; - - case TDBRACKET: - { - Test_env te; - - te.flags = TEF_DBRACKET; - te.pos.wp = t->args; - te.isa = dbteste_isa; - te.getopnd = dbteste_getopnd; - te.eval = dbteste_eval; - te.error = dbteste_error; - - rv = test_parse(&te); - break; - } - - case TFOR: - case TSELECT: - { - volatile bool is_first = true; - ap = (t->vars != NULL) ? - eval(t->vars, DOBLANK|DOGLOB|DOTILDE) - : e->loc->argv + 1; - e->type = E_LOOP; - while (1) { - i = ksh_sigsetjmp(e->jbuf, 0); - if (!i) - break; - if ((e->flags&EF_BRKCONT_PASS) - || (i != LBREAK && i != LCONTIN)) - { - quitenv(NULL); - unwind(i); - } else if (i == LBREAK) { - rv = 0; - goto Break; - } - } - rv = 0; /* in case of a continue */ - if (t->type == TFOR) { - while (*ap != NULL) { - setstr(global(t->str), *ap++, KSH_UNWIND_ERROR); - rv = execute(t->left, flags & XERROK); - } - } else { /* TSELECT */ - for (;;) { - if (!(cp = do_selectargs(ap, is_first))) { - rv = 1; - break; - } - is_first = false; - setstr(global(t->str), cp, KSH_UNWIND_ERROR); - rv = execute(t->left, flags & XERROK); - } - } - } - break; - - case TWHILE: - case TUNTIL: - e->type = E_LOOP; - while (1) { - i = ksh_sigsetjmp(e->jbuf, 0); - if (!i) - break; - if ((e->flags&EF_BRKCONT_PASS) - || (i != LBREAK && i != LCONTIN)) - { - quitenv(NULL); - unwind(i); - } else if (i == LBREAK) { - rv = 0; - goto Break; - } - } - rv = 0; /* in case of a continue */ - while ((execute(t->left, XERROK) == 0) == (t->type == TWHILE)) - rv = execute(t->right, flags & XERROK); - break; - - case TIF: - case TELIF: - if (t->right == NULL) - break; /* should be error */ - rv = execute(t->left, XERROK) == 0 ? - execute(t->right->left, flags & XERROK) : - execute(t->right->right, flags & XERROK); - break; - - case TCASE: - cp = evalstr(t->str, DOTILDE); - for (t = t->left; t != NULL && t->type == TPAT; t = t->right) - for (ap = t->vars; *ap; ap++) - if ((s = evalstr(*ap, DOTILDE|DOPAT)) - && gmatch(cp, s, false)) - goto Found; - break; - Found: - rv = execute(t->left, flags & XERROK); - break; - - case TBRACE: - rv = execute(t->left, flags & XERROK); - break; - - case TFUNCT: - rv = define(t->str, t); - break; - - case TTIME: - /* Clear XEXEC so nested execute() call doesn't exit - * (allows "ls -l | time grep foo"). - */ - rv = timex(t, flags & ~XEXEC); - break; - - case TEXEC: /* an eval'd TCOM */ - s = t->args[0]; - ap = makenv(); -#ifndef F_SETFD - for (i = 0; i < sizeof(clexec_tab); i++) - if (clexec_tab[i]) { - close(i); - clexec_tab[i] = 0; - } -#endif - restoresigs(); - cleanup_proc_env(); - ksh_execve(t->str, t->args, ap, 0); - if (errno == ENOEXEC) - scriptexec(t, ap); - else - errorf("%s: %s", s, strerror(errno)); - } - Break: - exstat = rv; - - quitenv(NULL); /* restores IO */ - if ((flags&XEXEC)) - unwind(LEXIT); /* exit child */ - if (rv != 0 && !(flags & XERROK)) { - if (Flag(FERREXIT)) - unwind(LERROR); - trapsig(SIGERR_); - } - return rv; -} - -/* - * execute simple command - */ - -static int -comexec(struct op *t, struct tbl *volatile tp, char **ap, volatile int flags) -{ - int i; - volatile int rv = 0; - char *cp; - char **lastp; - static struct op texec; /* Must be static (XXX but why?) */ - int type_flags; - int keepasn_ok; - int fcflags = FC_BI|FC_FUNC|FC_PATH; - int bourne_function_call = 0; - - /* snag the last argument for $_ XXX not the same as at&t ksh, - * which only seems to set $_ after a newline (but not in - * functions/dot scripts, but in interactive and script) - - * perhaps save last arg here and set it in shell()?. - */ - if (!Flag(FSH) && Flag(FTALKING) && *(lastp = ap)) { - while (*++lastp) - ; - /* setstr() can't fail here */ - setstr(typeset("_", LOCAL, 0, INTEGER, 0), *--lastp, - KSH_RETURN_ERROR); - } - - /* Deal with the shell builtins builtin, exec and command since - * they can be followed by other commands. This must be done before - * we know if we should create a local block, which must be done - * before we can do a path search (in case the assignments change - * PATH). - * Odd cases: - * FOO=bar exec > /dev/null FOO is kept but not exported - * FOO=bar exec foobar FOO is exported - * FOO=bar command exec > /dev/null FOO is neither kept nor exported - * FOO=bar command FOO is neither kept nor exported - * PATH=... foobar use new PATH in foobar search - */ - keepasn_ok = 1; - while (tp && tp->type == CSHELL) { - fcflags = FC_BI|FC_FUNC|FC_PATH;/* undo effects of command */ - if (tp->val.f == c_builtin) { - if ((cp = *++ap) == NULL) { - tp = NULL; - break; - } - tp = findcom(cp, FC_BI); - if (tp == NULL) - errorf("builtin: %s: not a builtin", cp); - continue; - } else if (tp->val.f == c_exec) { - if (ap[1] == NULL) - break; - ap++; - flags |= XEXEC; - } else if (tp->val.f == c_command) { - int optc, saw_p = 0; - - /* Ugly dealing with options in two places (here and - * in c_command(), but such is life) - */ - ksh_getopt_reset(&builtin_opt, 0); - while ((optc = ksh_getopt(ap, &builtin_opt, ":p")) - == 'p') - saw_p = 1; - if (optc != EOF) - break; /* command -vV or something */ - /* don't look for functions */ - fcflags = FC_BI|FC_PATH; - if (saw_p) { - if (Flag(FRESTRICTED)) { - warningf(true, - "command -p: restricted"); - rv = 1; - goto Leave; - } - fcflags |= FC_DEFPATH; - } - ap += builtin_opt.optind; - /* POSIX says special builtins lose their status - * if accessed using command. - */ - keepasn_ok = 0; - if (!ap[0]) { - /* ensure command with no args exits with 0 */ - subst_exstat = 0; - break; - } - } else - break; - tp = findcom(ap[0], fcflags & (FC_BI|FC_FUNC)); - } - if (keepasn_ok && (!ap[0] || (tp && (tp->flag & KEEPASN)))) - type_flags = 0; - else { - /* create new variable/function block */ - newblock(); - /* ksh functions don't keep assignments, POSIX functions do. */ - if (keepasn_ok && tp && tp->type == CFUNC - && !(tp->flag & FKSH)) { - bourne_function_call = 1; - type_flags = 0; - } else - type_flags = LOCAL|LOCAL_COPY|EXPORT; - } - if (Flag(FEXPORT)) - type_flags |= EXPORT; - for (i = 0; t->vars[i]; i++) { - cp = evalstr(t->vars[i], DOASNTILDE); - if (Flag(FXTRACE)) { - if (i == 0) - shf_fprintf(shl_out, "%s", - substitute(str_val(global("PS4")), 0)); - shf_fprintf(shl_out, "%s%s", cp, - t->vars[i + 1] ? space : newline); - if (!t->vars[i + 1]) - shf_flush(shl_out); - } - typeset(cp, type_flags, 0, 0, 0); - if (bourne_function_call && !(type_flags & EXPORT)) - typeset(cp, LOCAL|LOCAL_COPY|EXPORT, 0, 0, 0); - } - - if ((cp = *ap) == NULL) { - rv = subst_exstat; - goto Leave; - } else if (!tp) { - if (Flag(FRESTRICTED) && ksh_strchr_dirsep(cp)) { - warningf(true, "%s: restricted", cp); - rv = 1; - goto Leave; - } - tp = findcom(cp, fcflags); - } - - switch (tp->type) { - case CSHELL: /* shell built-in */ - rv = call_builtin(tp, ap); - break; - - case CFUNC: /* function call */ - { - volatile int old_xflag; - volatile Tflag old_inuse; - const char *volatile old_kshname; - - if (!(tp->flag & ISSET)) { - struct tbl *ftp; - - if (!tp->u.fpath) { - if (tp->u2.errno_) { - warningf(true, - "%s: can't find function definition file - %s", - cp, strerror(tp->u2.errno_)); - rv = 126; - } else { - warningf(true, - "%s: can't find function definition file", cp); - rv = 127; - } - break; - } - if (include(tp->u.fpath, 0, NULL, 0) < 0) { - warningf(true, - "%s: can't open function definition file %s - %s", - cp, tp->u.fpath, strerror(errno)); - rv = 127; - break; - } - if (!(ftp = findfunc(cp, hash(cp), false)) - || !(ftp->flag & ISSET)) - { - warningf(true, - "%s: function not defined by %s", - cp, tp->u.fpath); - rv = 127; - break; - } - tp = ftp; - } - - /* ksh functions set $0 to function name, POSIX functions leave - * $0 unchanged. - */ - old_kshname = kshname; - if (tp->flag & FKSH) - kshname = ap[0]; - else - ap[0] = (char *) kshname; - e->loc->argv = ap; - for (i = 0; *ap++ != NULL; i++) - ; - e->loc->argc = i - 1; - /* ksh-style functions handle getopts sanely, - * bourne/posix functions are insane... - */ - if (tp->flag & FKSH) { - e->loc->flags |= BF_DOGETOPTS; - e->loc->getopts_state = user_opt; - getopts_reset(1); - } - - old_xflag = Flag(FXTRACE); - Flag(FXTRACE) = tp->flag & TRACE ? true : false; - - old_inuse = tp->flag & FINUSE; - tp->flag |= FINUSE; - - e->type = E_FUNC; - i = ksh_sigsetjmp(e->jbuf, 0); - if (i == 0) { - /* seems odd to pass XERROK here, but at&t ksh does */ - exstat = execute(tp->val.t, flags & XERROK); - i = LRETURN; - } - kshname = old_kshname; - Flag(FXTRACE) = old_xflag; - tp->flag = (tp->flag & ~FINUSE) | old_inuse; - /* Were we deleted while executing? If so, free the execution - * tree. todo: Unfortunately, the table entry is never re-used - * until the lookup table is expanded. - */ - if ((tp->flag & (FDELETE|FINUSE)) == FDELETE) { - if (tp->flag & ALLOC) { - tp->flag &= ~ALLOC; - tfree(tp->val.t, tp->areap); - } - tp->flag = 0; - } - switch (i) { - case LRETURN: - case LERROR: - rv = exstat; - break; - case LINTR: - case LEXIT: - case LLEAVE: - case LSHELL: - quitenv(NULL); - unwind(i); - /*NOTREACHED*/ - default: - quitenv(NULL); - internal_errorf(1, "CFUNC %d", i); - } - break; - } - - case CEXEC: /* executable command */ - case CTALIAS: /* tracked alias */ - if (!(tp->flag&ISSET)) { - /* errno_ will be set if the named command was found - * but could not be executed (permissions, no execute - * bit, directory, etc). Print out a (hopefully) - * useful error message and set the exit status to 126. - */ - if (tp->u2.errno_) { - warningf(true, "%s: cannot execute - %s", cp, - strerror(tp->u2.errno_)); - rv = 126; /* POSIX */ - } else { - warningf(true, "%s: not found", cp); - rv = 127; - } - break; - } - - if (!Flag(FSH)) { - /* set $_ to program's full path */ - /* setstr() can't fail here */ - setstr(typeset("_", LOCAL|EXPORT, 0, INTEGER, 0), - tp->val.s, KSH_RETURN_ERROR); - } - - if (flags&XEXEC) { - j_exit(); - if (!(flags&XBGND) || Flag(FMONITOR)) { - setexecsig(&sigtraps[SIGINT], SS_RESTORE_ORIG); - setexecsig(&sigtraps[SIGQUIT], SS_RESTORE_ORIG); - } - } - - /* to fork we set up a TEXEC node and call execute */ - texec.type = TEXEC; - texec.left = t; /* for tprint */ - texec.str = tp->val.s; - texec.args = ap; - rv = exchild(&texec, flags, -1); - break; - } - Leave: - if (flags & XEXEC) { - exstat = rv; - unwind(LLEAVE); - } - return rv; -} - -static void -scriptexec(struct op *tp, char **ap) -{ - char *shell; - - shell = str_val(global(EXECSHELL_STR)); - if (shell && *shell) - shell = search(shell, path, X_OK, NULL); - if (!shell || !*shell) - shell = EXECSHELL; - - *tp->args-- = tp->str; -#ifdef SHARPBANG - { - char buf[LINE]; - char *cp; - int fd, n; - - buf[0] = '\0'; - if ((fd = open(tp->str, O_RDONLY)) >= 0) { - if ((n = read(fd, buf, LINE - 1)) > 0) - buf[n] = '\0'; - (void) close(fd); - } - if ((buf[0] == '#' && buf[1] == '!' && (cp = &buf[2]))) - { - while (*cp && (*cp == ' ' || *cp == '\t')) - cp++; - if (*cp && *cp != '\n') { - char *a0 = cp, *a1 = NULL; - - while (*cp && *cp != '\n' && *cp != ' ' - && *cp != '\t') - cp++; - if (*cp && *cp != '\n') { - *cp++ = '\0'; - while (*cp - && (*cp == ' ' || *cp == '\t')) - cp++; - if (*cp && *cp != '\n') { - a1 = cp; - /* all one argument */ - while (*cp && *cp != '\n') - cp++; - } - } - if (*cp == '\n') { - *cp = '\0'; - if (a1) - *tp->args-- = a1; - shell = a0; - } - } - } - } -#endif /* SHARPBANG */ - *tp->args = shell; - - ksh_execve(tp->args[0], tp->args, ap, 0); - - /* report both the program that was run and the bogus shell */ - errorf("%s: %s: %s", tp->str, shell, strerror(errno)); -} - -int -shcomexec(char **wp) -{ - struct tbl *tp; - - tp = tsearch(&builtins, *wp, hash(*wp)); - if (tp == NULL) - internal_errorf(1, "shcomexec: %s", *wp); - return call_builtin(tp, wp); -} - -/* - * Search function tables for a function. If create set, a table entry - * is created if none is found. - */ -struct tbl * -findfunc(const char *name, unsigned int h, int create) -{ - struct block *l; - struct tbl *tp = NULL; - - for (l = e->loc; l; l = l->next) { - tp = tsearch(&l->funs, name, h); - if (tp) - break; - if (!l->next && create) { - tp = tenter(&l->funs, name, h); - tp->flag = DEFINED; - tp->type = CFUNC; - tp->val.t = NULL; - break; - } - } - return tp; -} - -/* - * define function. Returns 1 if function is being undefined (t == 0) and - * function did not exist, returns 0 otherwise. - */ -int -define(const char *name, struct op *t) -{ - struct tbl *tp; - int was_set = 0; - - while (1) { - tp = findfunc(name, hash(name), true); - - if (tp->flag & ISSET) - was_set = 1; - /* If this function is currently being executed, we zap this - * table entry so findfunc() won't see it - */ - if (tp->flag & FINUSE) { - tp->name[0] = '\0'; - tp->flag &= ~DEFINED; /* ensure it won't be found */ - tp->flag |= FDELETE; - } else - break; - } - - if (tp->flag & ALLOC) { - tp->flag &= ~(ISSET|ALLOC); - tfree(tp->val.t, tp->areap); - } - - if (t == NULL) { /* undefine */ - tdelete(tp); - return was_set ? 0 : 1; - } - - tp->val.t = tcopy(t->left, tp->areap); - tp->flag |= (ISSET|ALLOC); - if (t->u.ksh_func) - tp->flag |= FKSH; - - return 0; -} - -/* - * add builtin - */ -void -builtin(const char *name, int (*func) (char **)) -{ - struct tbl *tp; - Tflag flag; - - /* see if any flags should be set for this builtin */ - for (flag = 0; ; name++) { - if (*name == '=') /* command does variable assignment */ - flag |= KEEPASN; - else if (*name == '*') /* POSIX special builtin */ - flag |= SPEC_BI; - else if (*name == '+') /* POSIX regular builtin */ - flag |= REG_BI; - else - break; - } - - tp = tenter(&builtins, name, hash(name)); - tp->flag = DEFINED | flag; - tp->type = CSHELL; - tp->val.f = func; -} - -/* - * find command - * either function, hashed command, or built-in (in that order) - */ -struct tbl * -findcom(const char *name, int flags) - - /* FC_* */ -{ - static struct tbl temp; - unsigned int h = hash(name); - struct tbl *tp = NULL, *tbi; - int insert = Flag(FTRACKALL); /* insert if not found */ - char *fpath; /* for function autoloading */ - char *npath; - - if (ksh_strchr_dirsep(name) != NULL) { - insert = 0; - /* prevent FPATH search below */ - flags &= ~FC_FUNC; - goto Search; - } - tbi = (flags & FC_BI) ? tsearch(&builtins, name, h) : NULL; - /* POSIX says special builtins first, then functions, then - * POSIX regular builtins, then search path... - */ - if ((flags & FC_SPECBI) && tbi && (tbi->flag & SPEC_BI)) - tp = tbi; - if (!tp && (flags & FC_FUNC)) { - tp = findfunc(name, h, false); - if (tp && !(tp->flag & ISSET)) { - if ((fpath = str_val(global("FPATH"))) == null) { - tp->u.fpath = NULL; - tp->u2.errno_ = 0; - } else - tp->u.fpath = search(name, fpath, R_OK, - &tp->u2.errno_); - } - } - if (!tp && (flags & FC_REGBI) && tbi && (tbi->flag & REG_BI)) - tp = tbi; - /* todo: posix says non-special/non-regular builtins must - * be triggered by some user-controllable means like a - * special directory in PATH. Requires modifications to - * the search() function. Tracked aliases should be - * modified to allow tracking of builtin commands. - * This should be under control of the FPOSIX flag. - * If this is changed, also change c_whence... - */ - if (!tp && (flags & FC_UNREGBI) && tbi) - tp = tbi; - if (!tp && (flags & FC_PATH) && !(flags & FC_DEFPATH)) { - tp = tsearch(&taliases, name, h); - if (tp && (tp->flag & ISSET) && eaccess(tp->val.s, X_OK) != 0) { - if (tp->flag & ALLOC) { - tp->flag &= ~ALLOC; - afree(tp->val.s, APERM); - } - tp->flag &= ~ISSET; - } - } - - Search: - if ((!tp || (tp->type == CTALIAS && !(tp->flag&ISSET))) - && (flags & FC_PATH)) - { - if (!tp) { - if (insert && !(flags & FC_DEFPATH)) { - tp = tenter(&taliases, name, h); - tp->type = CTALIAS; - } else { - tp = &temp; - tp->type = CEXEC; - } - tp->flag = DEFINED; /* make ~ISSET */ - } - npath = search(name, flags & FC_DEFPATH ? def_path : path, - X_OK, &tp->u2.errno_); - if (npath) { - tp->val.s = tp == &temp ? npath : str_save(npath, APERM); - tp->flag |= ISSET|ALLOC; - } else if ((flags & FC_FUNC) - && (fpath = str_val(global("FPATH"))) != null - && (npath = search(name, fpath, R_OK, - &tp->u2.errno_)) != NULL) - { - /* An undocumented feature of at&t ksh is that it - * searches FPATH if a command is not found, even - * if the command hasn't been set up as an autoloaded - * function (ie, no typeset -uf). - */ - tp = &temp; - tp->type = CFUNC; - tp->flag = DEFINED; /* make ~ISSET */ - tp->u.fpath = npath; - } - } - return tp; -} - -/* - * flush executable commands with relative paths - */ -void -flushcom(int all) - /* just relative or all */ -{ - struct tbl *tp; - struct tstate ts; - - for (twalk(&ts, &taliases); (tp = tnext(&ts)) != NULL; ) - if ((tp->flag&ISSET) && (all || !ISDIRSEP(tp->val.s[0]))) { - if (tp->flag&ALLOC) { - tp->flag &= ~(ALLOC|ISSET); - afree(tp->val.s, APERM); - } - tp->flag &= ~ISSET; - } -} - -/* Check if path is something we want to find. Returns -1 for failure. */ -int -search_access(const char *path, int mode, int *errnop) - - - /* set if candidate found, but not suitable */ -{ - int ret, err = 0; - struct stat statb; - - if (stat(path, &statb) < 0) - return -1; - ret = eaccess(path, mode); - if (ret < 0) - err = errno; /* File exists, but we can't access it */ - else if (mode == X_OK - && (!S_ISREG(statb.st_mode) - /* This 'cause access() says root can execute everything */ - || !(statb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)))) - { - ret = -1; - err = S_ISDIR(statb.st_mode) ? EISDIR : EACCES; - } - if (err && errnop && !*errnop) - *errnop = err; - return ret; -} - -/* - * search for command with PATH - */ -char * -search(const char *name, const char *path, int mode, int *errnop) - - - /* R_OK or X_OK */ - /* set if candidate found, but not suitable */ -{ - const char *sp, *p; - char *xp; - XString xs; - int namelen; - - if (errnop) - *errnop = 0; - if (ksh_strchr_dirsep(name)) { - if (search_access(name, mode, errnop) == 0) - return (char *) name; - return NULL; - } - - namelen = strlen(name) + 1; - Xinit(xs, xp, 128, ATEMP); - - sp = path; - while (sp != NULL) { - xp = Xstring(xs, xp); - if (!(p = strchr(sp, PATHSEP))) - p = sp + strlen(sp); - if (p != sp) { - XcheckN(xs, xp, p - sp); - memcpy(xp, sp, p - sp); - xp += p - sp; - *xp++ = DIRSEP; - } - sp = p; - XcheckN(xs, xp, namelen); - memcpy(xp, name, namelen); - if (search_access(Xstring(xs, xp), mode, errnop) == 0) - return Xclose(xs, xp + namelen); - if (*sp++ == '\0') - sp = NULL; - } - Xfree(xs, xp); - return NULL; -} - -static int -call_builtin(struct tbl *tp, char **wp) -{ - int rv; - - builtin_argv0 = wp[0]; - builtin_flag = tp->flag; - shf_reopen(1, SHF_WR, shl_stdout); - shl_stdout_ok = 1; - ksh_getopt_reset(&builtin_opt, GF_ERROR); - rv = (*tp->val.f)(wp); - shf_flush(shl_stdout); - shl_stdout_ok = 0; - builtin_flag = 0; - builtin_argv0 = NULL; - return rv; -} - -/* - * set up redirection, saving old fd's in e->savefd - */ -static int -iosetup(struct ioword *iop, struct tbl *tp) -{ - int u = -1; - char *cp = iop->name; - int iotype = iop->flag & IOTYPE; - int do_open = 1, do_close = 0, UNINITIALIZED(flags); - struct ioword iotmp; - struct stat statb; - - if (iotype != IOHERE) - cp = evalonestr(cp, DOTILDE|(Flag(FTALKING_I) ? DOGLOB : 0)); - - /* Used for tracing and error messages to print expanded cp */ - iotmp = *iop; - iotmp.name = (iotype == IOHERE) ? NULL : cp; - iotmp.flag |= IONAMEXP; - - if (Flag(FXTRACE)) - shellf("%s%s\n", - substitute(str_val(global("PS4")), 0), - snptreef(NULL, 32, "%R", &iotmp)); - - switch (iotype) { - case IOREAD: - flags = O_RDONLY; - break; - - case IOCAT: - flags = O_WRONLY | O_APPEND | O_CREAT; - break; - - case IOWRITE: - flags = O_WRONLY | O_CREAT | O_TRUNC; - /* The stat() is here to allow redirections to - * things like /dev/null without error. - */ - if (Flag(FNOCLOBBER) && !(iop->flag & IOCLOB) - && (stat(cp, &statb) < 0 || S_ISREG(statb.st_mode))) - flags |= O_EXCL; - break; - - case IORDWR: - flags = O_RDWR | O_CREAT; - break; - - case IOHERE: - do_open = 0; - /* herein() returns -2 if error has been printed */ - u = herein(iop->heredoc, iop->flag & IOEVAL); - /* cp may have wrong name */ - break; - - case IODUP: - { - const char *emsg; - - do_open = 0; - if (*cp == '-' && !cp[1]) { - u = 1009; /* prevent error return below */ - do_close = 1; - } else if ((u = check_fd(cp, - X_OK | ((iop->flag & IORDUP) ? R_OK : W_OK), - &emsg)) < 0) - { - warningf(true, "%s: %s", - snptreef(NULL, 32, "%R", &iotmp), emsg); - return -1; - } - if (u == iop->unit) - return 0; /* "dup from" == "dup to" */ - break; - } - } - if (do_open) { - if (Flag(FRESTRICTED) && (flags & O_CREAT)) { - warningf(true, "%s: restricted", cp); - return -1; - } - u = open(cp, flags, 0666); - } - if (u < 0) { - /* herein() may already have printed message */ - if (u == -1) - warningf(true, "cannot %s %s: %s", - iotype == IODUP ? "dup" - : (iotype == IOREAD || iotype == IOHERE) ? - "open" : "create", cp, strerror(errno)); - return -1; - } - /* Do not save if it has already been redirected (i.e. "cat >x >y"). */ - if (e->savefd[iop->unit] == 0) { - /* If these are the same, it means unit was previously closed */ - if (u == iop->unit) - e->savefd[iop->unit] = -1; - else - /* c_exec() assumes e->savefd[fd] set for any - * redirections. Ask savefd() not to close iop->unit; - * this allows error messages to be seen if iop->unit - * is 2; also means we can't lose the fd (eg, both - * dup2 below and dup2 in restfd() failing). - */ - e->savefd[iop->unit] = savefd(iop->unit, 1); - } - - if (do_close) - close(iop->unit); - else if (u != iop->unit) { - if (ksh_dup2(u, iop->unit, true) < 0) { - warningf(true, - "could not finish (dup) redirection %s: %s", - snptreef(NULL, 32, "%R", &iotmp), - strerror(errno)); - if (iotype != IODUP) - close(u); - return -1; - } - if (iotype != IODUP) - close(u); - /* Touching any co-process fd in an empty exec - * causes the shell to close its copies - */ - else if (tp && tp->type == CSHELL && tp->val.f == c_exec) { - if (iop->flag & IORDUP) /* possible exec <&p */ - coproc_read_close(u); - else /* possible exec >&p */ - coproc_write_close(u); - } - } - if (u == 2) /* Clear any write errors */ - shf_reopen(2, SHF_WR, shl_out); - return 0; -} - -/* - * open here document temp file. - * if unquoted here, expand here temp file into second temp file. - */ -static int -herein(const char *content, int sub) -{ - volatile int fd = -1; - struct source *s, *volatile osource; - struct shf *volatile shf; - struct temp *h; - int i; - - /* ksh -c 'cat << EOF' can cause this... */ - if (content == NULL) { - warningf(true, "here document missing"); - return -2; /* special to iosetup(): don't print error */ - } - - /* Create temp file to hold content (done before newenv so temp - * doesn't get removed too soon). - */ - h = maketemp(ATEMP, TT_HEREDOC_EXP, &e->temps); - if (!(shf = h->shf) || (fd = open(h->name, O_RDONLY, 0)) < 0) { - warningf(true, "can't %s temporary file %s: %s", - !shf ? "create" : "open", - h->name, strerror(errno)); - if (shf) - shf_close(shf); - return -2 /* special to iosetup(): don't print error */; - } - - osource = source; - newenv(E_ERRH); - i = ksh_sigsetjmp(e->jbuf, 0); - if (i) { - source = osource; - quitenv(shf); - close(fd); - return -2; /* special to iosetup(): don't print error */ - } - if (sub) { - /* Do substitutions on the content of heredoc */ - s = pushs(SSTRING, ATEMP); - s->start = s->str = content; - source = s; - if (yylex(ONEWORD) != LWORD) - internal_errorf(1, "herein: yylex"); - source = osource; - shf_puts(evalstr(yylval.cp, 0), shf); - } else - shf_puts(content, shf); - - quitenv(NULL); - - if (shf_close(shf) == EOF) { - close(fd); - warningf(true, "error writing %s: %s", h->name, - strerror(errno)); - return -2; /* special to iosetup(): don't print error */ - } - - return fd; -} - -/* - * ksh special - the select command processing section - * print the args in column form - assuming that we can - */ -static char * -do_selectargs(char **ap, bool print_menu) -{ - static const char *const read_args[] = - {"read", "-r", "REPLY", NULL}; - char *s; - int i, argct; - - for (argct = 0; ap[argct]; argct++) - ; - while (1) { - /* Menu is printed if - * - this is the first time around the select loop - * - the user enters a blank line - * - the REPLY parameter is empty - */ - if (print_menu || !*str_val(global("REPLY"))) - pr_menu(ap); - shellf("%s", str_val(global("PS3"))); - if (call_builtin(findcom("read", FC_BI), (char **) read_args)) - return NULL; - s = str_val(global("REPLY")); - if (*s) { - i = atoi(s); - return (i >= 1 && i <= argct) ? ap[i - 1] : null; - } - print_menu = 1; - } -} - -struct select_menu_info { - char *const *args; - int arg_width; - int num_width; -} info; - -static char *select_fmt_entry(void *arg, int i, char *buf, int buflen); - -/* format a single select menu item */ -static char * -select_fmt_entry(void *arg, int i, char *buf, int buflen) -{ - struct select_menu_info *smi = (struct select_menu_info *) arg; - - shf_snprintf(buf, buflen, "%*d) %s", - smi->num_width, i + 1, smi->args[i]); - return buf; -} - -/* - * print a select style menu - */ -int -pr_menu(char *const *ap) -{ - struct select_menu_info smi; - char *const *pp; - int nwidth, dwidth; - int i, n; - - /* Width/column calculations were done once and saved, but this - * means select can't be used recursively so we re-calculate each - * time (could save in a structure that is returned, but its probably - * not worth the bother). - */ - - /* - * get dimensions of the list - */ - for (n = 0, nwidth = 0, pp = ap; *pp; n++, pp++) { - i = strlen(*pp); - nwidth = (i > nwidth) ? i : nwidth; - } - /* - * we will print an index of the form - * %d) - * in front of each entry - * get the max width of this - */ - for (i = n, dwidth = 1; i >= 10; i /= 10) - dwidth++; - - smi.args = ap; - smi.arg_width = nwidth; - smi.num_width = dwidth; - print_columns(shl_out, n, select_fmt_entry, (void *) &smi, - dwidth + nwidth + 2, 1); - - return n; -} - -/* XXX: horrible kludge to fit within the framework */ - -static char *plain_fmt_entry(void *arg, int i, char *buf, int buflen); - -static char * -plain_fmt_entry(void *arg, int i, char *buf, int buflen) -{ - shf_snprintf(buf, buflen, "%s", ((char *const *)arg)[i]); - return buf; -} - -int -pr_list(char *const *ap) -{ - char *const *pp; - int nwidth; - int i, n; - - for (n = 0, nwidth = 0, pp = ap; *pp; n++, pp++) { - i = strlen(*pp); - nwidth = (i > nwidth) ? i : nwidth; - } - print_columns(shl_out, n, plain_fmt_entry, (void *) ap, nwidth + 1, 0); - - return n; -} - -/* - * [[ ... ]] evaluation routines - */ - -extern const char *const dbtest_tokens[]; -extern const char db_close[]; - -/* Test if the current token is a whatever. Accepts the current token if - * it is. Returns 0 if it is not, non-zero if it is (in the case of - * TM_UNOP and TM_BINOP, the returned value is a Test_op). - */ -static int -dbteste_isa(Test_env *te, Test_meta meta) -{ - int ret = 0; - int uqword; - char *p; - - if (!*te->pos.wp) - return meta == TM_END; - - /* unquoted word? */ - for (p = *te->pos.wp; *p == CHAR; p += 2) - ; - uqword = *p == EOS; - - if (meta == TM_UNOP || meta == TM_BINOP) { - if (uqword) { - char buf[8]; /* longer than the longest operator */ - char *q = buf; - for (p = *te->pos.wp; *p == CHAR - && q < &buf[sizeof(buf) - 1]; - p += 2) - *q++ = p[1]; - *q = '\0'; - ret = (int) test_isop(te, meta, buf); - } - } else if (meta == TM_END) - ret = 0; - else - ret = uqword - && strcmp(*te->pos.wp, dbtest_tokens[(int) meta]) == 0; - - /* Accept the token? */ - if (ret) - te->pos.wp++; - - return ret; -} - -static const char * -dbteste_getopnd(Test_env *te, Test_op op, int do_eval) -{ - char *s = *te->pos.wp; - - if (!s) - return NULL; - - te->pos.wp++; - - if (!do_eval) - return null; - - if (op == TO_STEQL || op == TO_STNEQ) - s = evalstr(s, DOTILDE | DOPAT); - else - s = evalstr(s, DOTILDE); - - return s; -} - -static int -dbteste_eval(Test_env *te, Test_op op, const char *opnd1, const char *opnd2, int do_eval) -{ - return test_eval(te, op, opnd1, opnd2, do_eval); -} - -static void -dbteste_error(Test_env *te, int offset, const char *msg) -{ - te->flags |= TEF_ERROR; - internal_errorf(0, "dbteste_error: %s (offset %d)", msg, offset); -} diff --git a/expand.h b/expand.h deleted file mode 100644 index f10f618..0000000 --- a/expand.h +++ /dev/null @@ -1,113 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: expand.h,v 1.3 2001/03/26 16:19:45 todd Exp $ */ - -#ifndef EXPAND_H -#define EXPAND_H - -/* - * Expanding strings - */ - -#define X_EXTRA 8 /* this many extra bytes in X string */ - -#if 0 /* Usage */ - XString xs; - char *xp; - - Xinit(xs, xp, 128, ATEMP); /* allocate initial string */ - while ((c = generate()) { - Xcheck(xs, xp); /* expand string if necessary */ - Xput(xs, xp, c); /* add character */ - } - return Xclose(xs, xp); /* resize string */ -/* - * NOTE: - * The Xcheck and Xinit macros have a magic + X_EXTRA in the lengths. - * This is so that you can put up to X_EXTRA characters in a XString - * before calling Xcheck. (See yylex in lex.c) - */ -#endif /* 0 */ - -typedef struct XString { - char *end, *beg; /* end, begin of string */ - size_t len; /* length */ - Area *areap; /* area to allocate/free from */ -} XString; - -typedef char * XStringP; - -/* initialize expandable string */ -#define Xinit(xs, xp, length, area) do { \ - (xs).len = length; \ - (xs).areap = (area); \ - (xs).beg = alloc((xs).len + X_EXTRA, (xs).areap); \ - (xs).end = (xs).beg + (xs).len; \ - xp = (xs).beg; \ - } while (0) - -/* stuff char into string */ -#define Xput(xs, xp, c) (*xp++ = (c)) - -/* check if there are at least n bytes left */ -#define XcheckN(xs, xp, n) do { \ - int more = ((xp) + (n)) - (xs).end; \ - if (more > 0) \ - xp = Xcheck_grow_(&xs, xp, more); \ - } while (0) - -/* check for overflow, expand string */ -#define Xcheck(xs, xp) XcheckN(xs, xp, 1) - -/* free string */ -#define Xfree(xs, xp) afree((void*) (xs).beg, (xs).areap) - -/* close, return string */ -#define Xclose(xs, xp) (char*) aresize((void*)(xs).beg, \ - (size_t)((xp) - (xs).beg), (xs).areap) -/* begin of string */ -#define Xstring(xs, xp) ((xs).beg) - -#define Xnleft(xs, xp) ((xs).end - (xp)) /* may be less than 0 */ -#define Xlength(xs, xp) ((xp) - (xs).beg) -#define Xsize(xs, xp) ((xs).end - (xs).beg) -#define Xsavepos(xs, xp) ((xp) - (xs).beg) -#define Xrestpos(xs, xp, n) ((xs).beg + (n)) - -char * Xcheck_grow_(XString *xsp, char *xp, size_t more); - -/* - * expandable vector of generic pointers - */ - -typedef struct XPtrV { - void **cur; /* next avail pointer */ - void **beg, **end; /* begin, end of vector */ -} XPtrV; - -#define XPinit(x, n) do { \ - void **vp__; \ - vp__ = (void**) alloc(sizeofN(void*, n), ATEMP); \ - (x).cur = (x).beg = vp__; \ - (x).end = vp__ + n; \ - } while (0) - -#define XPput(x, p) do { \ - if ((x).cur >= (x).end) { \ - int n = XPsize(x); \ - (x).beg = (void**) aresize((void*) (x).beg, \ - sizeofN(void*, n*2), ATEMP); \ - (x).cur = (x).beg + n; \ - (x).end = (x).cur + n; \ - } \ - *(x).cur++ = (p); \ - } while (0) - -#define XPptrv(x) ((x).beg) -#define XPsize(x) ((x).cur - (x).beg) - -#define XPclose(x) (void**) aresize((void*)(x).beg, \ - sizeofN(void*, XPsize(x)), ATEMP) - -#define XPfree(x) afree((void*) (x).beg, ATEMP) - -#endif /* ndef EXPAND_H */ diff --git a/expr.c b/expr.c deleted file mode 100644 index 2b37c1d..0000000 --- a/expr.c +++ /dev/null @@ -1,580 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: expr.c,v 1.16 2004/12/22 18:57:28 otto Exp $ */ - -/* - * Korn expression evaluation - */ - -#include "sh.h" -#include - -__RCSID("$MirOS$"); - -/* The order of these enums is constrained by the order of opinfo[] */ -enum token { - /* some (long) unary operators */ - O_PLUSPLUS = 0, O_MINUSMINUS, - /* binary operators */ - O_EQ, O_NE, - /* assignments are assumed to be in range O_ASN .. O_BORASN */ - O_ASN, O_TIMESASN, O_DIVASN, O_MODASN, O_PLUSASN, O_MINUSASN, - O_LSHIFTASN, O_RSHIFTASN, O_BANDASN, O_BXORASN, O_BORASN, - O_LSHIFT, O_RSHIFT, - O_LE, O_GE, O_LT, O_GT, - O_LAND, - O_LOR, - O_TIMES, O_DIV, O_MOD, - O_PLUS, O_MINUS, - O_BAND, - O_BXOR, - O_BOR, - O_TERN, - O_COMMA, - /* things after this aren't used as binary operators */ - /* unary that are not also binaries */ - O_BNOT, O_LNOT, - /* misc */ - OPEN_PAREN, CLOSE_PAREN, CTERN, - /* things that don't appear in the opinfo[] table */ - VAR, LIT, END, BAD - }; -#define IS_BINOP(op) (((int)op) >= (int)O_EQ && ((int)op) <= (int)O_COMMA) -#define IS_ASSIGNOP(op) ((int)(op) >= (int)O_ASN && (int)(op) <= (int)O_BORASN) - -enum prec { - P_PRIMARY = 0, /* VAR, LIT, (), ~ ! - + */ - P_MULT, /* * / % */ - P_ADD, /* + - */ - P_SHIFT, /* << >> */ - P_RELATION, /* < <= > >= */ - P_EQUALITY, /* == != */ - P_BAND, /* & */ - P_BXOR, /* ^ */ - P_BOR, /* | */ - P_LAND, /* && */ - P_LOR, /* || */ - P_TERN, /* ?: */ - P_ASSIGN, /* = *= /= %= += -= <<= >>= &= ^= |= */ - P_COMMA /* , */ - }; -#define MAX_PREC P_COMMA - -struct opinfo { - char name[4]; - int len; /* name length */ - enum prec prec; /* precedence: lower is higher */ -}; - -/* Tokens in this table must be ordered so the longest are first - * (eg, += before +). If you change something, change the order - * of enum token too. - */ -static const struct opinfo opinfo[] = { - { "++", 2, P_PRIMARY }, /* before + */ - { "--", 2, P_PRIMARY }, /* before - */ - { "==", 2, P_EQUALITY }, /* before = */ - { "!=", 2, P_EQUALITY }, /* before ! */ - { "=", 1, P_ASSIGN }, /* keep assigns in a block */ - { "*=", 2, P_ASSIGN }, - { "/=", 2, P_ASSIGN }, - { "%=", 2, P_ASSIGN }, - { "+=", 2, P_ASSIGN }, - { "-=", 2, P_ASSIGN }, - { "<<=", 3, P_ASSIGN }, - { ">>=", 3, P_ASSIGN }, - { "&=", 2, P_ASSIGN }, - { "^=", 2, P_ASSIGN }, - { "|=", 2, P_ASSIGN }, - { "<<", 2, P_SHIFT }, - { ">>", 2, P_SHIFT }, - { "<=", 2, P_RELATION }, - { ">=", 2, P_RELATION }, - { "<", 1, P_RELATION }, - { ">", 1, P_RELATION }, - { "&&", 2, P_LAND }, - { "||", 2, P_LOR }, - { "*", 1, P_MULT }, - { "/", 1, P_MULT }, - { "%", 1, P_MULT }, - { "+", 1, P_ADD }, - { "-", 1, P_ADD }, - { "&", 1, P_BAND }, - { "^", 1, P_BXOR }, - { "|", 1, P_BOR }, - { "?", 1, P_TERN }, - { ",", 1, P_COMMA }, - { "~", 1, P_PRIMARY }, - { "!", 1, P_PRIMARY }, - { "(", 1, P_PRIMARY }, - { ")", 1, P_PRIMARY }, - { ":", 1, P_PRIMARY }, - { "", 0, P_PRIMARY } /* end of table */ - }; - - -typedef struct expr_state Expr_state; -struct expr_state { - const char *expression; /* expression being evaluated */ - const char *tokp; /* lexical position */ - enum token tok; /* token from token() */ - int noassign; /* don't do assigns (for ?:,&&,||) */ - struct tbl *val; /* value from token() */ - struct tbl *evaling; /* variable that is being recursively - * expanded (EXPRINEVAL flag set) - */ -}; - -enum error_type { ET_UNEXPECTED, ET_BADLIT, ET_RECURSIVE, - ET_LVALUE, ET_RDONLY, ET_STR }; - -static void evalerr(Expr_state *es, enum error_type type, - const char *str) GCC_FUNC_ATTR(noreturn); -static struct tbl *evalexpr(Expr_state *es, enum prec prec); -static void token(Expr_state *es); -static struct tbl *do_ppmm(Expr_state *es, enum token op, - struct tbl *vasn, bool is_prefix); -static void assign_check(Expr_state *es, enum token op, - struct tbl *vasn); -static struct tbl *tempvar(void); -static struct tbl *intvar(Expr_state *es, struct tbl *vp); - -/* - * parse and evaluate expression - */ -int -evaluate(const char *expr, long int *rval, int error_ok) -{ - struct tbl v; - int ret; - - v.flag = DEFINED|INTEGER; - v.type = 0; - ret = v_evaluate(&v, expr, error_ok); - *rval = v.val.i; - return ret; -} - -/* - * parse and evaluate expression, storing result in vp. - */ -int -v_evaluate(struct tbl *vp, const char *expr, volatile int error_ok) -{ - struct tbl *v; - Expr_state curstate; - Expr_state * const es = &curstate; - int i; - - /* save state to allow recursive calls */ - curstate.expression = curstate.tokp = expr; - curstate.noassign = 0; - curstate.evaling = NULL; - - newenv(E_ERRH); - i = ksh_sigsetjmp(e->jbuf, 0); - if (i) { - /* Clear EXPRINEVAL in of any variables we were playing with */ - if (curstate.evaling) - curstate.evaling->flag &= ~EXPRINEVAL; - quitenv(NULL); - if (i == LAEXPR) { - if (error_ok == KSH_RETURN_ERROR) - return 0; - errorf(null); - } - unwind(i); - /*NOTREACHED*/ - } - - token(es); - if (es->tok == END) { - es->tok = LIT; - es->val = tempvar(); - } - v = intvar(es, evalexpr(es, MAX_PREC)); - - if (es->tok != END) - evalerr(es, ET_UNEXPECTED, NULL); - - if (vp->flag & INTEGER) - setint_v(vp, v); - else - /* can fail if readonly */ - setstr(vp, str_val(v), error_ok); - - quitenv(NULL); - - return 1; -} - -static void -evalerr(Expr_state *es, enum error_type type, const char *str) -{ - char tbuf[2]; - const char *s; - - switch (type) { - case ET_UNEXPECTED: - switch (es->tok) { - case VAR: - s = es->val->name; - break; - case LIT: - s = str_val(es->val); - break; - case END: - s = "end of expression"; - break; - case BAD: - tbuf[0] = *es->tokp; - tbuf[1] = '\0'; - s = tbuf; - break; - default: - s = opinfo[(int)es->tok].name; - } - warningf(true, "%s: unexpected '%s'", es->expression, s); - break; - - case ET_BADLIT: - warningf(true, "%s: bad number '%s'", es->expression, str); - break; - - case ET_RECURSIVE: - warningf(true, "%s: expression recurses on parameter '%s'", - es->expression, str); - break; - - case ET_LVALUE: - warningf(true, "%s: %s requires lvalue", - es->expression, str); - break; - - case ET_RDONLY: - warningf(true, "%s: %s applied to read only variable", - es->expression, str); - break; - - default: /* keep gcc happy */ - case ET_STR: - warningf(true, "%s: %s", es->expression, str); - break; - } - unwind(LAEXPR); -} - -static struct tbl * -evalexpr(Expr_state *es, enum prec prec) -{ - struct tbl *vl, UNINITIALIZED(*vr), *vasn; - enum token op; - long UNINITIALIZED(res); - - if (prec == P_PRIMARY) { - op = es->tok; - if (op == O_BNOT || op == O_LNOT || op == O_MINUS - || op == O_PLUS) - { - token(es); - vl = intvar(es, evalexpr(es, P_PRIMARY)); - if (op == O_BNOT) - vl->val.i = ~vl->val.i; - else if (op == O_LNOT) - vl->val.i = !vl->val.i; - else if (op == O_MINUS) - vl->val.i = -vl->val.i; - /* op == O_PLUS is a no-op */ - } else if (op == OPEN_PAREN) { - token(es); - vl = evalexpr(es, MAX_PREC); - if (es->tok != CLOSE_PAREN) - evalerr(es, ET_STR, "missing )"); - token(es); - } else if (op == O_PLUSPLUS || op == O_MINUSMINUS) { - token(es); - vl = do_ppmm(es, op, es->val, true); - token(es); - } else if (op == VAR || op == LIT) { - vl = es->val; - token(es); - } else { - evalerr(es, ET_UNEXPECTED, NULL); - /*NOTREACHED*/ - } - if (es->tok == O_PLUSPLUS || es->tok == O_MINUSMINUS) { - vl = do_ppmm(es, es->tok, vl, false); - token(es); - } - return vl; - } - vl = evalexpr(es, ((int) prec) - 1); - for (op = es->tok; IS_BINOP(op) && opinfo[(int) op].prec == prec; - op = es->tok) - { - token(es); - vasn = vl; - if (op != O_ASN) /* vl may not have a value yet */ - vl = intvar(es, vl); - if (IS_ASSIGNOP(op)) { - assign_check(es, op, vasn); - vr = intvar(es, evalexpr(es, P_ASSIGN)); - } else if (op != O_TERN && op != O_LAND && op != O_LOR) - vr = intvar(es, evalexpr(es, ((int) prec) - 1)); - if ((op == O_DIV || op == O_MOD || op == O_DIVASN - || op == O_MODASN) && vr->val.i == 0) - { - if (es->noassign) - vr->val.i = 1; - else - evalerr(es, ET_STR, "zero divisor"); - } - switch ((int) op) { - case O_TIMES: - case O_TIMESASN: - res = vl->val.i * vr->val.i; - break; - case O_DIV: - case O_DIVASN: - res = vl->val.i / vr->val.i; - break; - case O_MOD: - case O_MODASN: - res = vl->val.i % vr->val.i; - break; - case O_PLUS: - case O_PLUSASN: - res = vl->val.i + vr->val.i; - break; - case O_MINUS: - case O_MINUSASN: - res = vl->val.i - vr->val.i; - break; - case O_LSHIFT: - case O_LSHIFTASN: - res = vl->val.i << vr->val.i; - break; - case O_RSHIFT: - case O_RSHIFTASN: - res = vl->val.i >> vr->val.i; - break; - case O_LT: - res = vl->val.i < vr->val.i; - break; - case O_LE: - res = vl->val.i <= vr->val.i; - break; - case O_GT: - res = vl->val.i > vr->val.i; - break; - case O_GE: - res = vl->val.i >= vr->val.i; - break; - case O_EQ: - res = vl->val.i == vr->val.i; - break; - case O_NE: - res = vl->val.i != vr->val.i; - break; - case O_BAND: - case O_BANDASN: - res = vl->val.i & vr->val.i; - break; - case O_BXOR: - case O_BXORASN: - res = vl->val.i ^ vr->val.i; - break; - case O_BOR: - case O_BORASN: - res = vl->val.i | vr->val.i; - break; - case O_LAND: - if (!vl->val.i) - es->noassign++; - vr = intvar(es, evalexpr(es, ((int) prec) - 1)); - res = vl->val.i && vr->val.i; - if (!vl->val.i) - es->noassign--; - break; - case O_LOR: - if (vl->val.i) - es->noassign++; - vr = intvar(es, evalexpr(es, ((int) prec) - 1)); - res = vl->val.i || vr->val.i; - if (vl->val.i) - es->noassign--; - break; - case O_TERN: - { - int e = vl->val.i != 0; - if (!e) - es->noassign++; - vl = evalexpr(es, MAX_PREC); - if (!e) - es->noassign--; - if (es->tok != CTERN) - evalerr(es, ET_STR, "missing :"); - token(es); - if (e) - es->noassign++; - vr = evalexpr(es, P_TERN); - if (e) - es->noassign--; - vl = e ? vl : vr; - } - break; - case O_ASN: - res = vr->val.i; - break; - case O_COMMA: - res = vr->val.i; - break; - } - if (IS_ASSIGNOP(op)) { - vr->val.i = res; - if (vasn->flag & INTEGER) - setint_v(vasn, vr); - else - setint(vasn, res); - vl = vr; - } else if (op != O_TERN) - vl->val.i = res; - } - return vl; -} - -static void -token(Expr_state *es) -{ - const char *cp; - int c; - char *tvar; - - /* skip white space */ - for (cp = es->tokp; (c = *cp), isspace(c); cp++) - ; - es->tokp = cp; - - if (c == '\0') - es->tok = END; - else if (letter(c)) { - for (; letnum(c); c = *cp) - cp++; - if (c == '[') { - int len; - - len = array_ref_len(cp); - if (len == 0) - evalerr(es, ET_STR, "missing ]"); - cp += len; - } else if (c == '(' /*)*/ ) { - /* todo: add math functions (all take single argument): - * abs acos asin atan cos cosh exp int log sin sinh sqrt - * tan tanh - */ - ; - } - if (es->noassign) { - es->val = tempvar(); - es->val->flag |= EXPRLVALUE; - } else { - tvar = str_nsave(es->tokp, cp - es->tokp, ATEMP); - es->val = global(tvar); - afree(tvar, ATEMP); - } - es->tok = VAR; - } else if (digit(c)) { - for (; c != '_' && (letnum(c) || c == '#'); c = *cp++) - ; - tvar = str_nsave(es->tokp, --cp - es->tokp, ATEMP); - es->val = tempvar(); - es->val->flag &= ~INTEGER; - es->val->type = 0; - es->val->val.s = tvar; - if (setint_v(es->val, es->val) == NULL) - evalerr(es, ET_BADLIT, tvar); - afree(tvar, ATEMP); - es->tok = LIT; - } else { - int i, n0; - - for (i = 0; (n0 = opinfo[i].name[0]); i++) - if (c == n0 - && strncmp(cp, opinfo[i].name, opinfo[i].len) == 0) - { - es->tok = (enum token) i; - cp += opinfo[i].len; - break; - } - if (!n0) - es->tok = BAD; - } - es->tokp = cp; -} - -/* Do a ++ or -- operation */ -static struct tbl * -do_ppmm(Expr_state *es, enum token op, struct tbl *vasn, bool is_prefix) -{ - struct tbl *vl; - int oval; - - assign_check(es, op, vasn); - - vl = intvar(es, vasn); - oval = op == O_PLUSPLUS ? vl->val.i++ : vl->val.i--; - if (vasn->flag & INTEGER) - setint_v(vasn, vl); - else - setint(vasn, vl->val.i); - if (!is_prefix) /* undo the inc/dec */ - vl->val.i = oval; - - return vl; -} - -static void -assign_check(Expr_state *es, enum token op, struct tbl *vasn) -{ - if (vasn->name[0] == '\0' && !(vasn->flag & EXPRLVALUE)) - evalerr(es, ET_LVALUE, opinfo[(int) op].name); - else if (vasn->flag & RDONLY) - evalerr(es, ET_RDONLY, opinfo[(int) op].name); -} - -static struct tbl * -tempvar(void) -{ - struct tbl *vp; - - vp = (struct tbl*) alloc(sizeof(struct tbl), ATEMP); - vp->flag = ISSET|INTEGER; - vp->type = 0; - vp->areap = ATEMP; - vp->val.i = 0; - vp->name[0] = '\0'; - return vp; -} - -/* cast (string) variable to temporary integer variable */ -static struct tbl * -intvar(Expr_state *es, struct tbl *vp) -{ - struct tbl *vq; - - /* try to avoid replacing a temp var with another temp var */ - if (vp->name[0] == '\0' - && (vp->flag & (ISSET|INTEGER|EXPRLVALUE)) == (ISSET|INTEGER)) - return vp; - - vq = tempvar(); - if (setint_v(vq, vp) == NULL) { - if (vp->flag & EXPRINEVAL) - evalerr(es, ET_RECURSIVE, vp->name); - es->evaling = vp; - vp->flag |= EXPRINEVAL; - v_evaluate(vq, str_val(vp), KSH_UNWIND_ERROR); - vp->flag &= ~EXPRINEVAL; - es->evaling = NULL; - } - return vq; -} diff --git a/history.c b/history.c deleted file mode 100644 index f653f8b..0000000 --- a/history.c +++ /dev/null @@ -1,1113 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: history.c,v 1.24 2004/08/03 12:44:59 danh Exp $ */ - -/* - * command history - * - * only implements in-memory history. - */ - -/* - * This file contains - * a) the original in-memory history mechanism - * b) a simple file saving history mechanism done by sjg@zen - * define EASY_HISTORY to get this - * c) a more complicated mechanism done by pc@hillside.co.uk - * that more closely follows the real ksh way of doing - * things. You need to have the mmap system call for this - * to work on your system - */ - -#include "sh.h" -#include "ksh_stat.h" - -__RCSID("$MirOS$"); - -#ifndef EASY_HISTORY -/* Defines and includes for the complicated case */ - -# include -# include - -/* - * variables for handling the data file - */ -static int histfd; -static int hsize; - -static int hist_count_lines(unsigned char *, int); -static int hist_shrink(unsigned char *, int); -static unsigned char *hist_skip_back(unsigned char *,int *,int); -static void histload(Source *, unsigned char *, int); -static void histinsert(Source *, int, unsigned char *); -static void writehistfile(int, char *); -static int sprinkle(int); - -# ifdef MAP_FILE -# define MAP_FLAGS (MAP_FILE|MAP_PRIVATE) -# else -# define MAP_FLAGS MAP_PRIVATE -# endif - -#endif /* of EASY_HISTORY */ - -static int hist_execute(char *cmd); -static int hist_replace(char **hp, const char *pat, const char *rep, - int global); -static char **hist_get(const char *str, int approx, int allow_cur); -static char **hist_get_newest(int allow_cur); -static char **hist_get_oldest(void); -static void histbackup(void); - -static char **current; /* current position in history[] */ -static int curpos; /* current index in history[] */ -static char *hname; /* current name of history file */ -static int hstarted; /* set after hist_init() called */ -static Source *hist_source; - - -int -c_fc(char **wp) -{ - struct shf *shf; - struct temp UNINITIALIZED(*tf); - char *p, *editor = NULL; - int gflag = 0, lflag = 0, nflag = 0, sflag = 0, rflag = 0; - int optc; - char *first = NULL, *last = NULL; - char **hfirst, **hlast, **hp; - - if (!Flag(FTALKING_I)) { - bi_errorf("history functions not available"); - return 1; - } - - while ((optc = ksh_getopt(wp, &builtin_opt, "e:glnrs0,1,2,3,4,5,6,7,8,9,")) != EOF) - switch (optc) { - case 'e': - p = builtin_opt.optarg; - if (strcmp(p, "-") == 0) - sflag++; - else { - size_t len = strlen(p) + 4; - editor = str_nsave(p, len, ATEMP); - strlcat(editor, " $_", len); - } - break; - case 'g': /* non-at&t ksh */ - gflag++; - break; - case 'l': - lflag++; - break; - case 'n': - nflag++; - break; - case 'r': - rflag++; - break; - case 's': /* posix version of -e - */ - sflag++; - break; - /* kludge city - accept -num as -- -num (kind of) */ - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - p = shf_smprintf("-%c%s", - optc, builtin_opt.optarg); - if (!first) - first = p; - else if (!last) - last = p; - else { - bi_errorf("too many arguments"); - return 1; - } - break; - case '?': - return 1; - } - wp += builtin_opt.optind; - - /* Substitute and execute command */ - if (sflag) { - char *pat = NULL, *rep = NULL; - - if (editor || lflag || nflag || rflag) { - bi_errorf("can't use -e, -l, -n, -r with -s (-e -)"); - return 1; - } - - /* Check for pattern replacement argument */ - if (*wp && **wp && (p = strchr(*wp + 1, '='))) { - pat = str_save(*wp, ATEMP); - p = pat + (p - *wp); - *p++ = '\0'; - rep = p; - wp++; - } - /* Check for search prefix */ - if (!first && (first = *wp)) - wp++; - if (last || *wp) { - bi_errorf("too many arguments"); - return 1; - } - - hp = first ? hist_get(first, false, false) - : hist_get_newest(false); - if (!hp) - return 1; - return hist_replace(hp, pat, rep, gflag); - } - - if (editor && (lflag || nflag)) { - bi_errorf("can't use -l, -n with -e"); - return 1; - } - - if (!first && (first = *wp)) - wp++; - if (!last && (last = *wp)) - wp++; - if (*wp) { - bi_errorf("too many arguments"); - return 1; - } - if (!first) { - hfirst = lflag ? hist_get("-16", true, true) - : hist_get_newest(false); - if (!hfirst) - return 1; - /* can't fail if hfirst didn't fail */ - hlast = hist_get_newest(false); - } else { - /* POSIX says not an error if first/last out of bounds - * when range is specified; at&t ksh and pdksh allow out of - * bounds for -l as well. - */ - hfirst = hist_get(first, (lflag || last) ? true : false, - lflag ? true : false); - if (!hfirst) - return 1; - hlast = last ? hist_get(last, true, lflag ? true : false) - : (lflag ? hist_get_newest(false) : hfirst); - if (!hlast) - return 1; - } - if (hfirst > hlast) { - char **temp; - - temp = hfirst; hfirst = hlast; hlast = temp; - rflag = !rflag; /* POSIX */ - } - - /* List history */ - if (lflag) { - char *s, *t; - const char *nfmt = nflag ? "\t" : "%d\t"; - - for (hp = rflag ? hlast : hfirst; - hp >= hfirst && hp <= hlast; hp += rflag ? -1 : 1) - { - shf_fprintf(shl_stdout, nfmt, - hist_source->line - (int) (histptr - hp)); - /* print multi-line commands correctly */ - for (s = *hp; (t = strchr(s, '\n')); s = t) - shf_fprintf(shl_stdout, "%.*s\t", ++t - s, s); - shf_fprintf(shl_stdout, "%s\n", s); - } - shf_flush(shl_stdout); - return 0; - } - - /* Run editor on selected lines, then run resulting commands */ - - tf = maketemp(ATEMP, TT_HIST_EDIT, &e->temps); - if (!(shf = tf->shf)) { - bi_errorf("cannot create temp file %s - %s", - tf->name, strerror(errno)); - return 1; - } - for (hp = rflag ? hlast : hfirst; - hp >= hfirst && hp <= hlast; hp += rflag ? -1 : 1) - shf_fprintf(shf, "%s\n", *hp); - if (shf_close(shf) == EOF) { - bi_errorf("error writing temporary file - %s", strerror(errno)); - return 1; - } - - /* Ignore setstr errors here (arbitrary) */ - setstr(local("_", false), tf->name, KSH_RETURN_ERROR); - - /* XXX: source should not get trashed by this.. */ - { - Source *sold = source; - int ret; - - ret = command(editor ? editor : "${FCEDIT:-/bin/ed} $_"); - source = sold; - if (ret) - return ret; - } - - { - struct stat statb; - XString xs; - char *xp; - int n; - - if (!(shf = shf_open(tf->name, O_RDONLY, 0, 0))) { - bi_errorf("cannot open temp file %s", tf->name); - return 1; - } - - n = fstat(shf_fileno(shf), &statb) < 0 ? 128 - : statb.st_size + 1; - Xinit(xs, xp, n, hist_source->areap); - while ((n = shf_read(xp, Xnleft(xs, xp), shf)) > 0) { - xp += n; - if (Xnleft(xs, xp) <= 0) - XcheckN(xs, xp, Xlength(xs, xp)); - } - if (n < 0) { - bi_errorf("error reading temp file %s - %s", - tf->name, strerror(shf_errno(shf))); - shf_close(shf); - return 1; - } - shf_close(shf); - *xp = '\0'; - strip_nuls(Xstring(xs, xp), Xlength(xs, xp)); - return hist_execute(Xstring(xs, xp)); - } -} - -/* Save cmd in history, execute cmd (cmd gets trashed) */ -static int -hist_execute(char *cmd) -{ - Source *sold; - int ret; - char *p, *q; - - histbackup(); - - for (p = cmd; p; p = q) { - if ((q = strchr(p, '\n'))) { - *q++ = '\0'; /* kill the newline */ - if (!*q) /* ignore trailing newline */ - q = NULL; - } -#ifdef EASY_HISTORY - if (p != cmd) - histappend(p, true); - else -#endif /* EASY_HISTORY */ - histsave(++(hist_source->line), p, 1); - - shellf("%s\n", p); /* POSIX doesn't say this is done... */ - if ((p = q)) /* restore \n (trailing \n not restored) */ - q[-1] = '\n'; - } - - /* Commands are executed here instead of pushing them onto the - * input 'cause posix says the redirection and variable assignments - * in - * X=y fc -e - 42 2> /dev/null - * are to effect the repeated commands environment. - */ - /* XXX: source should not get trashed by this.. */ - sold = source; - ret = command(cmd); - source = sold; - return ret; -} - -static int -hist_replace(char **hp, const char *pat, const char *rep, int global) -{ - char *line; - - if (!pat) - line = str_save(*hp, ATEMP); - else { - char *s, *s1; - int pat_len = strlen(pat); - int rep_len = strlen(rep); - int len; - XString xs; - char *xp; - int any_subst = 0; - - Xinit(xs, xp, 128, ATEMP); - for (s = *hp; (s1 = strstr(s, pat)) - && (!any_subst || global) ; s = s1 + pat_len) - { - any_subst = 1; - len = s1 - s; - XcheckN(xs, xp, len + rep_len); - memcpy(xp, s, len); /* first part */ - xp += len; - memcpy(xp, rep, rep_len); /* replacement */ - xp += rep_len; - } - if (!any_subst) { - bi_errorf("substitution failed"); - return 1; - } - len = strlen(s) + 1; - XcheckN(xs, xp, len); - memcpy(xp, s, len); - xp += len; - line = Xclose(xs, xp); - } - return hist_execute(line); -} - -/* - * get pointer to history given pattern - * pattern is a number or string - */ -static char ** -hist_get(const char *str, int approx, int allow_cur) -{ - char **hp = NULL; - int n; - - if (getn(str, &n)) { - hp = histptr + (n < 0 ? n : (n - hist_source->line)); - if (hp < history) { - if (approx) - hp = hist_get_oldest(); - else { - bi_errorf("%s: not in history", str); - hp = NULL; - } - } else if (hp > histptr) { - if (approx) - hp = hist_get_newest(allow_cur); - else { - bi_errorf("%s: not in history", str); - hp = NULL; - } - } else if (!allow_cur && hp == histptr) { - bi_errorf("%s: invalid range", str); - hp = NULL; - } - } else { - int anchored = *str == '?' ? (++str, 0) : 1; - - /* the -1 is to avoid the current fc command */ - n = findhist(histptr - history - 1, 0, str, anchored); - if (n < 0) { - bi_errorf("%s: not in history", str); - hp = NULL; - } else - hp = &history[n]; - } - return hp; -} - -/* Return a pointer to the newest command in the history */ -static char ** -hist_get_newest(int allow_cur) -{ - if (histptr < history || (!allow_cur && histptr == history)) { - bi_errorf("no history (yet)"); - return NULL; - } - if (allow_cur) - return histptr; - return histptr - 1; -} - -/* Return a pointer to the newest command in the history */ -static char ** -hist_get_oldest(void) -{ - if (histptr <= history) { - bi_errorf("no history (yet)"); - return NULL; - } - return history; -} - -/******************************/ -/* Back up over last histsave */ -/******************************/ -static void -histbackup(void) -{ - static int last_line = -1; - - if (histptr >= history && last_line != hist_source->line) { - hist_source->line--; - afree((void*)*histptr, APERM); - histptr--; - last_line = hist_source->line; - } -} - -/* - * Return the current position. - */ -char ** -histpos(void) -{ - return current; -} - -int -histN(void) -{ - return curpos; -} - -int -histnum(int n) -{ - int last = histptr - history; - - if (n < 0 || n >= last) { - current = histptr; - curpos = last; - return last; - } else { - current = &history[n]; - curpos = n; - return n; - } -} - -/* - * This will become unnecessary if hist_get is modified to allow - * searching from positions other than the end, and in either - * direction. - */ -int -findhist(int start, int fwd, const char *str, int anchored) -{ - char **hp; - int maxhist = histptr - history; - int incr = fwd ? 1 : -1; - int len = strlen(str); - - if (start < 0 || start >= maxhist) - start = maxhist; - - hp = &history[start]; - for (; hp >= history && hp <= histptr; hp += incr) - if ((anchored && strncmp(*hp, str, len) == 0) - || (!anchored && strstr(*hp, str))) - return hp - history; - - return -1; -} - -/* - * set history - * this means reallocating the dataspace - */ -void -sethistsize(int n) -{ - if (n > 0 && n != histsize) { - int cursize = histptr - history; - - /* save most recent history */ - if (n < cursize) { - memmove(history, histptr - n, n * sizeof(char *)); - cursize = n; - } - - history = (char **)aresize(history, n*sizeof(char *), APERM); - - histsize = n; - histptr = history + cursize; - } -} - -/* - * set history file - * This can mean reloading/resetting/starting history file - * maintenance - */ -void -sethistfile(const char *name) -{ - /* if not started then nothing to do */ - if (hstarted == 0) - return; - - /* if the name is the same as the name we have */ - if (hname && strcmp(hname, name) == 0) - return; - - /* - * its a new name - possibly - */ -#ifdef EASY_HISTORY - if (hname) { - afree(hname, APERM); - hname = NULL; - } -#else - if (histfd) { - /* yes the file is open */ - (void) close(histfd); - histfd = 0; - hsize = 0; - afree(hname, APERM); - hname = NULL; - /* let's reset the history */ - histptr = history - 1; - hist_source->line = 0; - } -#endif - - hist_init(hist_source); -} - -/* - * initialise the history vector - */ -void -init_histvec(void) -{ - if (history == (char **)NULL) { - histsize = HISTORYSIZE; - history = (char **)alloc(histsize*sizeof (char *), APERM); - histptr = history - 1; - } -} - -#ifdef EASY_HISTORY -/* - * save command in history - */ -void -histsave(int lno, const char *cmd, int dowrite) - /* ignored (compatibility with COMPLEX_HISTORY) */ - - /* ignored (compatibility with COMPLEX_HISTORY) */ -{ - char **hp = histptr; - char *cp; - - if (++hp >= history + histsize) { /* remove oldest command */ - afree((void*)history[0], APERM); - memmove(history, history + 1, - sizeof(history[0]) * (histsize - 1)); - hp = &history[histsize - 1]; - } - *hp = str_save(cmd, APERM); - /* trash trailing newline but allow imbedded newlines */ - cp = *hp + strlen(*hp); - if (cp > *hp && cp[-1] == '\n') - cp[-1] = '\0'; - histptr = hp; -} - -/* - * Append an entry to the last saved command. Used for multiline - * commands - */ -void -histappend(const char *cmd, int nl_separate) -{ - int hlen, clen; - char *p; - - hlen = strlen(*histptr); - clen = strlen(cmd); - if (clen > 0 && cmd[clen-1] == '\n') - clen--; - p = *histptr = (char *) aresize(*histptr, hlen + clen + 2, APERM); - p += hlen; - if (nl_separate) - *p++ = '\n'; - memcpy(p, cmd, clen); - p[clen] = '\0'; -} - -/* - * 92-04-25 - * A simple history file implementation. - * At present we only save the history when we exit. - * This can cause problems when there are multiple shells are - * running under the same user-id. The last shell to exit gets - * to save its history. - */ -void -hist_init(Source *s) -{ - char *f; - FILE *fh; - - if (Flag(FTALKING) == 0) - return; - - hstarted = 1; - - hist_source = s; - - if ((f = str_val(global("HISTFILE"))) == NULL || *f == '\0') { - hname = NULL; - return; - } else - hname = str_save(f, APERM); - - if ((fh = fopen(hname, "r"))) { - int pos = 0, nread = 0; - int contin = 0; /* continuation of previous command */ - char *end; - char hline[LINE + 1]; - - while (1) { - if (pos >= nread) { - pos = 0; - nread = fread(hline, 1, LINE, fh); - if (nread <= 0) - break; - hline[nread] = '\0'; - } - end = strchr(hline + pos, 0); /* will always succeed */ - if (contin) - histappend(hline + pos, 0); - else { - hist_source->line++; - histsave(0, hline + pos, 0); - } - pos = end - hline + 1; - contin = end == &hline[nread]; - } - fclose(fh); - } -} - -/* - * save our history. - * We check that we do not have more than we are allowed. - * If the history file is read-only we do nothing. - * Handy for having all shells start with a useful history set. - */ - -void -hist_finish(void) -{ - static int once; - FILE *fh; - int i; - char **hp; - - if (once++) - return; - /* check how many we have */ - i = histptr - history; - if (i >= histsize) - hp = &histptr[-histsize]; - else - hp = history; - if (hname && (fh = fopen(hname, "w"))) - { - for (i = 0; hp + i <= histptr && hp[i]; i++) - fprintf(fh, "%s%c", hp[i], '\0'); - fclose(fh); - } -} - -#else /* EASY_HISTORY */ - -/* - * Routines added by Peter Collinson BSDI(Europe)/Hillside Systems to - * a) permit HISTSIZE to control number of lines of history stored - * b) maintain a physical history file - * - * It turns out that there is a lot of ghastly hackery here - */ - - -/* - * save command in history - */ -void -histsave(int lno, const char *cmd, int dowrite) -{ - char **hp; - char *c, *cp; - - c = str_save(cmd, APERM); - if ((cp = strchr(c, '\n')) != NULL) - *cp = '\0'; - - if (histfd && dowrite) - writehistfile(lno, c); - - hp = histptr; - - if (++hp >= history + histsize) { /* remove oldest command */ - afree((void*)*history, APERM); - for (hp = history; hp < history + histsize - 1; hp++) - hp[0] = hp[1]; - } - *hp = c; - histptr = hp; -} - -/* - * Write history data to a file nominated by HISTFILE - * if HISTFILE is unset then history still happens, but - * the data is not written to a file - * All copies of ksh looking at the file will maintain the - * same history. This is ksh behaviour. - * - * This stuff uses mmap() - * if your system ain't got it - then you'll have to undef HISTORYFILE - */ - -/* - * Open a history file - * Format is: - * Bytes 1, 2: HMAGIC - just to check that we are dealing with - * the correct object - * Then follows a number of stored commands - * Each command is - * - */ -#define HMAGIC1 0xab -#define HMAGIC2 0xcd -#define COMMAND 0xff - -void -hist_init(Source *s) -{ - unsigned char *base; - int lines; - int fd; - - if (Flag(FTALKING) == 0) - return; - - hstarted = 1; - - hist_source = s; - - hname = str_val(global("HISTFILE")); - if (hname == NULL) - return; - hname = str_save(hname, APERM); - - retry: - /* we have a file and are interactive */ - if ((fd = open(hname, O_RDWR|O_CREAT|O_APPEND, 0600)) < 0) - return; - - histfd = savefd(fd, 0); - - (void) flock(histfd, LOCK_EX); - - hsize = lseek(histfd, 0L, SEEK_END); - - if (hsize == 0) { - /* add magic */ - if (sprinkle(histfd)) { - hist_finish(); - return; - } - } - else if (hsize > 0) { - /* - * we have some data - */ - base = (unsigned char *)mmap(0, hsize, PROT_READ, MAP_FLAGS, histfd, 0); - /* - * check on its validity - */ - if (base == MAP_FAILED || *base != HMAGIC1 || base[1] != HMAGIC2) { - if (base != MAP_FAILED) - munmap((caddr_t)base, hsize); - hist_finish(); - unlink(hname); - goto retry; - } - if (hsize > 2) { - lines = hist_count_lines(base+2, hsize-2); - if (lines > histsize) { - /* we need to make the file smaller */ - if (hist_shrink(base, hsize)) - unlink(hname); - munmap((caddr_t)base, hsize); - hist_finish(); - goto retry; - } - } - histload(hist_source, base+2, hsize-2); - munmap((caddr_t)base, hsize); - } - (void) flock(histfd, LOCK_UN); - hsize = lseek(histfd, 0L, SEEK_END); -} - -typedef enum state { - shdr, /* expecting a header */ - sline, /* looking for a null byte to end the line */ - sn1, /* bytes 1 to 4 of a line no */ - sn2, sn3, sn4 -} State; - -static int -hist_count_lines(unsigned char *base, int bytes) -{ - State state = shdr; - int lines = 0; - - while (bytes--) { - switch (state) - { - case shdr: - if (*base == COMMAND) - state = sn1; - break; - case sn1: - state = sn2; break; - case sn2: - state = sn3; break; - case sn3: - state = sn4; break; - case sn4: - state = sline; break; - case sline: - if (*base == '\0') - lines++, state = shdr; - } - base++; - } - return lines; -} - -/* - * Shrink the history file to histsize lines - */ -static int -hist_shrink(unsigned char *oldbase, int oldbytes) -{ - int fd; - char nfile[PATH_MAX]; - struct stat statb; - unsigned char *nbase = oldbase; - int nbytes = oldbytes; - - nbase = hist_skip_back(nbase, &nbytes, histsize); - if (nbase == NULL) - return 1; - if (nbase == oldbase) - return 0; - - /* - * create temp file - */ - (void) shf_snprintf(nfile, sizeof(nfile), "%s.%d", hname, procpid); - if ((fd = creat(nfile, 0600)) < 0) - return 1; - - if (sprinkle(fd)) { - close(fd); - unlink(nfile); - return 1; - } - if (write(fd, nbase, nbytes) != nbytes) { - close(fd); - unlink(nfile); - return 1; - } - /* - * worry about who owns this file - */ - if (fstat(histfd, &statb) >= 0) - fchown(fd, statb.st_uid, statb.st_gid); - close(fd); - - /* - * rename - */ - if (rename(nfile, hname) < 0) - return 1; - return 0; -} - - -/* - * find a pointer to the data 'no' back from the end of the file - * return the pointer and the number of bytes left - */ -static unsigned char * -hist_skip_back(unsigned char *base, int *bytes, int no) -{ - int lines = 0; - unsigned char *ep; - - for (ep = base + *bytes; --ep > base; ) { - /* this doesn't really work: the 4 byte line number that is - * encoded after the COMMAND byte can itself contain the - * COMMAND byte.... - */ - for (; ep > base && *ep != COMMAND; ep--) - ; - if (ep == base) - break; - if (++lines == no) { - *bytes = *bytes - ((char *)ep - (char *)base); - return ep; - } - } - return NULL; -} - -/* - * load the history structure from the stored data - */ -static void -histload(Source *s, unsigned char *base, int bytes) -{ - State state; - int lno = 0; - unsigned char *line = NULL; - - for (state = shdr; bytes-- > 0; base++) { - switch (state) { - case shdr: - if (*base == COMMAND) - state = sn1; - break; - case sn1: - lno = (((*base)&0xff)<<24); - state = sn2; - break; - case sn2: - lno |= (((*base)&0xff)<<16); - state = sn3; - break; - case sn3: - lno |= (((*base)&0xff)<<8); - state = sn4; - break; - case sn4: - lno |= (*base)&0xff; - line = base+1; - state = sline; - break; - case sline: - if (*base == '\0') { - /* worry about line numbers */ - if (histptr >= history && lno-1 != s->line) { - /* a replacement ? */ - histinsert(s, lno, line); - } - else { - s->line = lno; - histsave(lno, (char *)line, 0); - } - state = shdr; - } - } - } -} - -/* - * Insert a line into the history at a specified number - */ -static void -histinsert(Source *s, int lno, unsigned char *line) -{ - char **hp; - - if (lno >= s->line-(histptr-history) && lno <= s->line) { - hp = &histptr[lno-s->line]; - if (*hp) - afree((void*)*hp, APERM); - *hp = str_save((char *)line, APERM); - } -} - -/* - * write a command to the end of the history file - * This *MAY* seem easy but it's also necessary to check - * that the history file has not changed in size. - * If it has - then some other shell has written to it - * and we should read those commands to update our history - */ -static void -writehistfile(int lno, char *cmd) -{ - int sizenow; - unsigned char *base; - unsigned char *new; - int bytes; - unsigned char hdr[5]; - - (void) flock(histfd, LOCK_EX); - sizenow = lseek(histfd, 0L, SEEK_END); - if (sizenow != hsize) { - /* - * Things have changed - */ - if (sizenow > hsize) { - /* someone has added some lines */ - bytes = sizenow - hsize; - base = (unsigned char *)mmap(0, sizenow, PROT_READ, MAP_FLAGS, histfd, 0); - if (base == MAP_FAILED) - goto bad; - new = base + hsize; - if (*new != COMMAND) { - munmap((caddr_t)base, sizenow); - goto bad; - } - hist_source->line--; - histload(hist_source, new, bytes); - hist_source->line++; - lno = hist_source->line; - munmap((caddr_t)base, sizenow); - hsize = sizenow; - } else { - /* it has shrunk */ - /* but to what? */ - /* we'll give up for now */ - goto bad; - } - } - /* - * we can write our bit now - */ - hdr[0] = COMMAND; - hdr[1] = (lno>>24)&0xff; - hdr[2] = (lno>>16)&0xff; - hdr[3] = (lno>>8)&0xff; - hdr[4] = lno&0xff; - (void) write(histfd, hdr, 5); - (void) write(histfd, cmd, strlen(cmd)+1); - hsize = lseek(histfd, 0L, SEEK_END); - (void) flock(histfd, LOCK_UN); - return; -bad: - hist_finish(); -} - -void -hist_finish(void) -{ - (void) flock(histfd, LOCK_UN); - (void) close(histfd); - histfd = 0; -} - -/* - * add magic to the history file - */ -static int -sprinkle(int fd) -{ - static unsigned char mag[] = { HMAGIC1, HMAGIC2 }; - - return(write(fd, mag, 2) != 2); -} -#endif diff --git a/io.c b/io.c deleted file mode 100644 index 8bd930e..0000000 --- a/io.c +++ /dev/null @@ -1,476 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: io.c,v 1.17 2004/12/18 22:35:41 millert Exp $ */ - -/* - * shell buffered IO and formatted output - */ - -#include -#include "sh.h" -#include "ksh_stat.h" - -static int initio_done; - -/* - * formatted output functions - */ - - -/* A shell error occurred (eg, syntax error, etc.) */ -void -errorf(const char *fmt, ...) -{ - va_list va; - - shl_stdout_ok = 0; /* debugging: note that stdout not valid */ - exstat = 1; - if (*fmt) { - error_prefix(true); - SH_VA_START(va, fmt); - shf_vfprintf(shl_out, fmt, va); - va_end(va); - shf_putchar('\n', shl_out); - } - shf_flush(shl_out); - unwind(LERROR); -} - -/* like errorf(), but no unwind is done */ -void -warningf(int fileline, const char *fmt, ...) -{ - va_list va; - - error_prefix(fileline); - SH_VA_START(va, fmt); - shf_vfprintf(shl_out, fmt, va); - va_end(va); - shf_putchar('\n', shl_out); - shf_flush(shl_out); -} - -/* Used by built-in utilities to prefix shell and utility name to message - * (also unwinds environments for special builtins). - */ -void -bi_errorf(const char *fmt, ...) -{ - va_list va; - - shl_stdout_ok = 0; /* debugging: note that stdout not valid */ - exstat = 1; - if (*fmt) { - error_prefix(true); - /* not set when main() calls parse_args() */ - if (builtin_argv0) - shf_fprintf(shl_out, "%s: ", builtin_argv0); - SH_VA_START(va, fmt); - shf_vfprintf(shl_out, fmt, va); - va_end(va); - shf_putchar('\n', shl_out); - } - shf_flush(shl_out); - /* POSIX special builtins and ksh special builtins cause - * non-interactive shells to exit. - * XXX odd use of KEEPASN; also may not want LERROR here - */ - if ((builtin_flag & SPEC_BI) - || (Flag(FPOSIX) && (builtin_flag & KEEPASN))) - { - builtin_argv0 = NULL; - unwind(LERROR); - } -} - -/* Called when something that shouldn't happen does */ -void -internal_errorf(int jump, const char *fmt, ...) -{ - va_list va; - - error_prefix(true); - shf_fprintf(shl_out, "internal error: "); - SH_VA_START(va, fmt); - shf_vfprintf(shl_out, fmt, va); - va_end(va); - shf_putchar('\n', shl_out); - shf_flush(shl_out); - if (jump) - unwind(LERROR); -} - -/* used by error reporting functions to print "ksh: .kshrc[25]: " */ -void -error_prefix(int fileline) -{ - /* Avoid foo: foo[2]: ... */ - if (!fileline || !source || !source->file - || strcmp(source->file, kshname) != 0) - shf_fprintf(shl_out, "%s: ", kshname + (*kshname == '-')); - if (fileline && source && source->file != NULL) { - shf_fprintf(shl_out, "%s[%d]: ", source->file, - source->errline > 0 ? source->errline : source->line); - source->errline = 0; - } -} - -/* printf to shl_out (stderr) with flush */ -void -shellf(const char *fmt, ...) -{ - va_list va; - - if (!initio_done) /* shl_out may not be set up yet... */ - return; - SH_VA_START(va, fmt); - shf_vfprintf(shl_out, fmt, va); - va_end(va); - shf_flush(shl_out); -} - -/* printf to shl_stdout (stdout) */ -void -shprintf(const char *fmt, ...) -{ - va_list va; - - if (!shl_stdout_ok) - internal_errorf(1, "shl_stdout not valid"); - SH_VA_START(va, fmt); - shf_vfprintf(shl_stdout, fmt, va); - va_end(va); -} - -#ifdef KSH_DEBUG -static struct shf *kshdebug_shf; - -void -kshdebug_init_() -{ - if (kshdebug_shf) - shf_close(kshdebug_shf); - kshdebug_shf = shf_open("/tmp/ksh-debug.log", - O_WRONLY|O_APPEND|O_CREAT, 0600, - SHF_WR|SHF_MAPHI); - if (kshdebug_shf) { - shf_fprintf(kshdebug_shf, "\nNew shell[pid %d]\n", getpid()); - shf_flush(kshdebug_shf); - } -} - -/* print to debugging log */ -void -kshdebug_printf_(const char *fmt, ...) -{ - va_list va; - - if (!kshdebug_shf) - return; - SH_VA_START(va, fmt); - shf_fprintf(kshdebug_shf, "[%d] ", getpid()); - shf_vfprintf(kshdebug_shf, fmt, va); - va_end(va); - shf_flush(kshdebug_shf); -} - -void -kshdebug_dump_(str, mem, nbytes) - const char *str; - const void *mem; - int nbytes; -{ - int i, j; - int nprow = 16; - - if (!kshdebug_shf) - return; - shf_fprintf(kshdebug_shf, "[%d] %s:\n", getpid(), str); - for (i = 0; i < nbytes; i += nprow) { - char c = '\t'; - for (j = 0; j < nprow && i + j < nbytes; j++) { - shf_fprintf(kshdebug_shf, "%c%02x", - c, ((const unsigned char *) mem)[i + j]); - c = ' '; - } - shf_fprintf(kshdebug_shf, "\n"); - } - shf_flush(kshdebug_shf); -} -#endif /* KSH_DEBUG */ - -/* test if we can seek backwards fd (returns 0 or SHF_UNBUF) */ -int -can_seek(int fd) -{ - struct stat statb; - - return fstat(fd, &statb) == 0 && !S_ISREG(statb.st_mode) ? - SHF_UNBUF : 0; -} - -struct shf shf_iob[3]; - -void -initio(void) -{ - shf_fdopen(1, SHF_WR, shl_stdout); /* force buffer allocation */ - shf_fdopen(2, SHF_WR, shl_out); - shf_fdopen(2, SHF_WR, shl_spare); /* force buffer allocation */ - initio_done = 1; - kshdebug_init(); -} - -/* A dup2() with error checking */ -int -ksh_dup2(int ofd, int nfd, int errok) -{ - int ret = dup2(ofd, nfd); - - if (ret < 0 && errno != EBADF && !errok) - errorf("too many files open in shell"); - -#ifdef DUP2_BROKEN - /* Ultrix systems like to preserve the close-on-exec flag */ - if (ret >= 0) - (void) fcntl(nfd, F_SETFD, 0); -#endif /* DUP2_BROKEN */ - - return ret; -} - -/* - * move fd from user space (0<=fd<10) to shell space (fd>=10), - * set close-on-exec flag. - */ -int -savefd(int fd, int noclose) -{ - int nfd; - - if (fd < FDBASE) { - nfd = ksh_dupbase(fd, FDBASE); - if (nfd < 0) { - if (errno == EBADF) - return -1; - else - errorf("too many files open in shell"); - } - if (!noclose) - close(fd); - } else - nfd = fd; - fcntl(nfd, F_SETFD, FD_CLOEXEC); - return nfd; -} - -void -restfd(int fd, int ofd) -{ - if (fd == 2) - shf_flush(&shf_iob[fd]); - if (ofd < 0) /* original fd closed */ - close(fd); - else if (fd != ofd) { - ksh_dup2(ofd, fd, true); /* XXX: what to do if this fails? */ - close(ofd); - } -} - -void -openpipe(int *pv) -{ - if (pipe(pv) < 0) - errorf("can't create pipe - try again"); - pv[0] = savefd(pv[0], 0); - pv[1] = savefd(pv[1], 0); -} - -void -closepipe(int *pv) -{ - close(pv[0]); - close(pv[1]); -} - -/* Called by iosetup() (deals with 2>&4, etc.), c_read, c_print to turn - * a string (the X in 2>&X, read -uX, print -uX) into a file descriptor. - */ -int -check_fd(char *name, int mode, const char **emsgp) -{ - int fd, fl; - - if (isdigit(name[0]) && !name[1]) { - fd = name[0] - '0'; - if ((fl = fcntl(fd = name[0] - '0', F_GETFL, 0)) < 0) { - if (emsgp) - *emsgp = "bad file descriptor"; - return -1; - } - fl &= O_ACCMODE; - /* X_OK is a kludge to disable this check for dups (x<&1): - * historical shells never did this check (XXX don't know what - * posix has to say). - */ - if (!(mode & X_OK) && fl != O_RDWR - && (((mode & R_OK) && fl != O_RDONLY) - || ((mode & W_OK) && fl != O_WRONLY))) - { - if (emsgp) - *emsgp = (fl == O_WRONLY) ? - "fd not open for reading" - : "fd not open for writing"; - return -1; - } - return fd; - } else if (name[0] == 'p' && !name[1]) - return coproc_getfd(mode, emsgp); - if (emsgp) - *emsgp = "illegal file descriptor name"; - return -1; -} - -/* Called once from main */ -void -coproc_init(void) -{ - coproc.read = coproc.readw = coproc.write = -1; - coproc.njobs = 0; - coproc.id = 0; -} - -/* Called by c_read() when eof is read - close fd if it is the co-process fd */ -void -coproc_read_close(int fd) -{ - if (coproc.read >= 0 && fd == coproc.read) { - coproc_readw_close(fd); - close(coproc.read); - coproc.read = -1; - } -} - -/* Called by c_read() and by iosetup() to close the other side of the - * read pipe, so reads will actually terminate. - */ -void -coproc_readw_close(int fd) -{ - if (coproc.readw >= 0 && coproc.read >= 0 && fd == coproc.read) { - close(coproc.readw); - coproc.readw = -1; - } -} - -/* Called by c_print when a write to a fd fails with EPIPE and by iosetup - * when co-process input is dup'd - */ -void -coproc_write_close(int fd) -{ - if (coproc.write >= 0 && fd == coproc.write) { - close(coproc.write); - coproc.write = -1; - } -} - -/* Called to check for existence of/value of the co-process file descriptor. - * (Used by check_fd() and by c_read/c_print to deal with -p option). - */ -int -coproc_getfd(int mode, const char **emsgp) -{ - int fd = (mode & R_OK) ? coproc.read : coproc.write; - - if (fd >= 0) - return fd; - if (emsgp) - *emsgp = "no coprocess"; - return -1; -} - -/* called to close file descriptors related to the coprocess (if any) - * Should be called with SIGCHLD blocked. - */ -void -coproc_cleanup(int reuse) -{ - /* This to allow co-processes to share output pipe */ - if (!reuse || coproc.readw < 0 || coproc.read < 0) { - if (coproc.read >= 0) { - close(coproc.read); - coproc.read = -1; - } - if (coproc.readw >= 0) { - close(coproc.readw); - coproc.readw = -1; - } - } - if (coproc.write >= 0) { - close(coproc.write); - coproc.write = -1; - } -} - -/* - * temporary files - */ - -struct temp * -maketemp(Area *ap, Temp_type type, struct temp **tlist) -{ -#ifndef HAVE_MKSTEMP - static unsigned int inc; -#endif - struct temp *tp; - int len; - int fd; - char *path; - const char *dir; - - dir = tmpdir ? tmpdir : "/tmp"; - /* The 20 + 20 is a paranoid worst case for pid/inc */ - len = strlen(dir) + 3 + 20 + 20 + 1; - tp = (struct temp *) alloc(sizeof(struct temp) + len, ap); - tp->name = path = (char *) &tp[1]; - tp->shf = NULL; - tp->type = type; -#ifdef HAVE_MKSTEMP - shf_snprintf(path, len, "%s/shXXXXXXXX", dir); - fd = mkstemp(path); - if (fd >= 0) - tp->shf = shf_fdopen(fd, SHF_WR, NULL); -#else - while (1) { - /* Note that temp files need to fit 8.3 DOS limits */ - shf_snprintf(path, len, "%s/sh%05u.%03x", - dir, (unsigned) procpid, inc++); - /* Mode 0600 to be paranoid, O_TRUNC in case O_EXCL isn't - * really there. - */ - fd = open(path, O_RDWR|O_CREAT|O_EXCL|O_TRUNC, 0600); - if (fd >= 0) { - tp->shf = shf_fdopen(fd, SHF_WR, NULL); - break; - } - if (errno != EINTR -#ifdef EEXIST - && errno != EEXIST -#endif /* EEXIST */ -#ifdef EISDIR - && errno != EISDIR -#endif /* EISDIR */ - ) - /* Error must be printed by caller: don't know here if - * errorf() or bi_errorf() should be used. - */ - break; - } -#endif /* !def HAVE_MKSTEMP */ - tp->pid = procpid; - - tp->next = *tlist; - *tlist = tp; - - return tp; -} diff --git a/jobs.c b/jobs.c deleted file mode 100644 index b5f2e51..0000000 --- a/jobs.c +++ /dev/null @@ -1,1816 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: jobs.c,v 1.30 2004/12/22 18:48:56 millert Exp $ */ - -/* - * Process and job control - */ - -/* - * Reworked/Rewritten version of Eric Gisin's/Ron Natalie's code by - * Larry Bouzane (larry@cs.mun.ca) and hacked again by - * Michael Rendell (michael@cs.mun.ca) - * - * The interface to the rest of the shell should probably be changed - * to allow use of vfork() when available but that would be way too much - * work :) - * - * Notes regarding the copious ifdefs: - * - JOB_SIGS is independent of JOBS - it is defined if there are modern - * signal and wait routines available. This is preferred, even when - * JOBS is not defined, since the shell will not otherwise notice when - * background jobs die until the shell waits for a foreground process - * to die. - * - TTY_PGRP defined iff JOBS is defined - defined if there are tty - * process groups - * - NEED_PGRP_SYNC defined iff JOBS is defined - see comment below - */ - -#include "sh.h" -#include -#include "ksh_wait.h" -#include -#include -#include "tty.h" - -__RCSID("$MirOS$"); - -/* Start of system configuration stuff */ - -/* We keep CHILD_MAX zombie processes around (exact value isn't critical) */ -#ifndef CHILD_MAX -# if defined(HAVE_SYSCONF) && defined(_SC_CHILD_MAX) -# define CHILD_MAX sysconf(_SC_CHILD_MAX) -# else /* _SC_CHILD_MAX */ -# ifdef _POSIX_CHILD_MAX -# define CHILD_MAX ((_POSIX_CHILD_MAX) * 2) -# else /* _POSIX_CHILD_MAX */ -# define CHILD_MAX 20 -# endif /* _POSIX_CHILD_MAX */ -# endif /* _SC_CHILD_MAX */ -#endif /* !CHILD_MAX */ - -#ifdef JOBS -# if defined(HAVE_TCSETPGRP) || defined(TIOCSPGRP) -# define TTY_PGRP -# endif -# ifdef BSD_PGRP -# define setpgid setpgrp -# define getpgID() getpgrp(0) -# else -# define getpgID() getpgrp() -# endif -# if defined(TTY_PGRP) && !defined(HAVE_TCSETPGRP) -int tcsetpgrp(int fd, pid_t grp); -int tcgetpgrp(int fd); - -int -tcsetpgrp(int fd, pid_t grp) -{ - return ioctl(fd, TIOCSPGRP, &grp); -} - -int -tcgetpgrp(int fd) -{ - int r, grp; - - if ((r = ioctl(fd, TIOCGPGRP, &grp)) < 0) - return r; - return grp; -} -# endif /* !HAVE_TCSETPGRP && TIOCSPGRP */ -#else /* JOBS */ -/* These so we can use ifdef xxx instead of if defined(JOBS) && defined(xxx) */ -# undef TTY_PGRP -# undef NEED_PGRP_SYNC -#endif /* JOBS */ - -/* End of system configuration stuff */ - - -/* Order important! */ -#define PRUNNING 0 -#define PEXITED 1 -#define PSIGNALLED 2 -#define PSTOPPED 3 - -typedef struct proc Proc; -struct proc { - Proc *next; /* next process in pipeline (if any) */ - int state; - WAIT_T status; /* wait status */ - pid_t pid; /* process id */ - char command[48]; /* process command string */ -}; - -/* Notify/print flag - j_print() argument */ -#define JP_NONE 0 /* don't print anything */ -#define JP_SHORT 1 /* print signals processes were killed by */ -#define JP_MEDIUM 2 /* print [job-num] -/+ command */ -#define JP_LONG 3 /* print [job-num] -/+ pid command */ -#define JP_PGRP 4 /* print pgrp */ - -/* put_job() flags */ -#define PJ_ON_FRONT 0 /* at very front */ -#define PJ_PAST_STOPPED 1 /* just past any stopped jobs */ - -/* Job.flags values */ -#define JF_STARTED 0x001 /* set when all processes in job are started */ -#define JF_WAITING 0x002 /* set if j_waitj() is waiting on job */ -#define JF_W_ASYNCNOTIFY 0x004 /* set if waiting and async notification ok */ -#define JF_XXCOM 0x008 /* set for `command` jobs */ -#define JF_FG 0x010 /* running in foreground (also has tty pgrp) */ -#define JF_SAVEDTTY 0x020 /* j->ttystate is valid */ -#define JF_CHANGED 0x040 /* process has changed state */ -#define JF_KNOWN 0x080 /* $! referenced */ -#define JF_ZOMBIE 0x100 /* known, unwaited process */ -#define JF_REMOVE 0x200 /* flagged for removal (j_jobs()/j_noityf()) */ -#define JF_USETTYMODE 0x400 /* tty mode saved if process exits normally */ -#define JF_SAVEDTTYPGRP 0x800 /* j->saved_ttypgrp is valid */ - -typedef struct job Job; -struct job { - Job *next; /* next job in list */ - int job; /* job number: %n */ - int flags; /* see JF_* */ - int state; /* job state */ - int status; /* exit status of last process */ - pid_t pgrp; /* process group of job */ - pid_t ppid; /* pid of process that forked job */ - INT32 age; /* number of jobs started */ - struct timeval systime; /* system time used by job */ - struct timeval usrtime; /* user time used by job */ - Proc *proc_list; /* process list */ - Proc *last_proc; /* last process in list */ - Coproc_id coproc_id; /* 0 or id of coprocess output pipe */ -#ifdef TTY_PGRP - struct termios ttystate;/* saved tty state for stopped jobs */ - pid_t saved_ttypgrp; /* saved tty process group for stopped jobs */ -#endif /* TTY_PGRP */ -}; - -/* Flags for j_waitj() */ -#define JW_NONE 0x00 -#define JW_INTERRUPT 0x01 /* ^C will stop the wait */ -#define JW_ASYNCNOTIFY 0x02 /* asynchronous notification during wait ok */ -#define JW_STOPPEDWAIT 0x04 /* wait even if job stopped */ - -/* Error codes for j_lookup() */ -#define JL_OK 0 -#define JL_NOSUCH 1 /* no such job */ -#define JL_AMBIG 2 /* %foo or %?foo is ambiguous */ -#define JL_INVALID 3 /* non-pid, non-% job id */ - -static const char *const lookup_msgs[] = { - null, - "no such job", - "ambiguous", - "argument must be %job or process id", - NULL - }; -struct timeval j_systime, j_usrtime; /* user and system time of last j_waitjed job */ - -static Job *job_list; /* job list */ -static Job *last_job; -static Job *async_job; -static pid_t async_pid; - -static int nzombie; /* # of zombies owned by this process */ -static INT32 njobs; /* # of jobs started */ -static int child_max; /* CHILD_MAX */ - - -#ifdef JOB_SIGS -/* held_sigchld is set if sigchld occurs before a job is completely started */ -static volatile sig_atomic_t held_sigchld; -#endif /* JOB_SIGS */ - -#ifdef JOBS -static struct shf *shl_j; -#endif /* JOBS */ - -#ifdef NEED_PGRP_SYNC -/* On some systems, the kernel doesn't count zombie processes when checking - * if a process group is valid, which can cause problems in creating the - * pipeline "cmd1 | cmd2": if cmd1 can die (and go into the zombie state) - * before cmd2 is started, the kernel doesn't allow the setpgid() for cmd2 - * to succeed. Solution is to create a pipe between the parent and the first - * process; the first process doesn't do anything until the pipe is closed - * and the parent doesn't close the pipe until all the processes are started. - */ -static int j_sync_pipe[2]; -static int j_sync_open; -#endif /* NEED_PGRP_SYNC */ - -#ifdef TTY_PGRP -static int ttypgrp_ok; /* set if can use tty pgrps */ -static pid_t restore_ttypgrp = -1; -static pid_t our_pgrp; -static int const tt_sigs[] = { SIGTSTP, SIGTTIN, SIGTTOU }; -#endif /* TTY_PGRP */ - -static void j_set_async(Job *j); -static void j_startjob(Job *j); -static int j_waitj(Job *j, int flags, const char *where); -static RETSIGTYPE j_sigchld(int sig); -static void j_print(Job *j, int how, struct shf *shf); -static Job *j_lookup(const char *cp, int *ecodep); -static Job *new_job(void); -static Proc *new_proc(void); -static void check_job(Job *j); -static void put_job(Job *j, int where); -static void remove_job(Job *j, const char *where); -static int kill_job(Job *j, int sig); - -/* initialize job control */ -void -j_init(int mflagset) -{ - child_max = CHILD_MAX; /* so syscon() isn't always being called */ - -#ifdef JOB_SIGS - sigemptyset(&sm_default); - sigprocmask(SIG_SETMASK, &sm_default, NULL); - - sigemptyset(&sm_sigchld); - sigaddset(&sm_sigchld, SIGCHLD); - - setsig(&sigtraps[SIGCHLD], j_sigchld, - SS_RESTORE_ORIG|SS_FORCE|SS_SHTRAP); -#else /* JOB_SIGS */ - /* Make sure SIGCHLD isn't ignored - can do odd things under SYSV */ - setsig(&sigtraps[SIGCHLD], SIG_DFL, SS_RESTORE_ORIG|SS_FORCE); -#endif /* JOB_SIGS */ - -#ifdef JOBS - if (!mflagset && Flag(FTALKING)) - Flag(FMONITOR) = 1; - - /* shl_j is used to do asynchronous notification (used in - * an interrupt handler, so need a distinct shf) - */ - shl_j = shf_fdopen(2, SHF_WR, NULL); - -# ifdef TTY_PGRP - if (Flag(FMONITOR) || Flag(FTALKING)) { - int i; - - /* the TF_SHELL_USES test is a kludge that lets us know if - * if the signals have been changed by the shell. - */ - for (i = NELEM(tt_sigs); --i >= 0; ) { - sigtraps[tt_sigs[i]].flags |= TF_SHELL_USES; - /* j_change() sets this to SS_RESTORE_DFL if FMONITOR */ - setsig(&sigtraps[tt_sigs[i]], SIG_IGN, - SS_RESTORE_IGN|SS_FORCE); - } - } -# endif /* TTY_PGRP */ - - /* j_change() calls tty_init() */ - if (Flag(FMONITOR)) - j_change(); - else -#endif /* JOBS */ - if (Flag(FTALKING)) - tty_init(true); -} - -/* job cleanup before shell exit */ -void -j_exit(void) -{ - /* kill stopped, and possibly running, jobs */ - Job *j; - int killed = 0; - - for (j = job_list; j != NULL; j = j->next) { - if (j->ppid == procpid - && (j->state == PSTOPPED - || (j->state == PRUNNING - && ((j->flags & JF_FG) - || (Flag(FLOGIN) && !Flag(FNOHUP) - && procpid == kshpid))))) - { - killed = 1; - if (j->pgrp == 0) - kill_job(j, SIGHUP); - else - killpg(j->pgrp, SIGHUP); -#ifdef JOBS - if (j->state == PSTOPPED) { - if (j->pgrp == 0) - kill_job(j, SIGCONT); - else - killpg(j->pgrp, SIGCONT); - } -#endif /* JOBS */ - } - } - if (killed) - sleep(1); - j_notify(); - -#ifdef JOBS -# ifdef TTY_PGRP - if (kshpid == procpid && restore_ttypgrp >= 0) { - /* Need to restore the tty pgrp to what it was when the - * shell started up, so that the process that started us - * will be able to access the tty when we are done. - * Also need to restore our process group in case we are - * about to do an exec so that both our parent and the - * process we are to become will be able to access the tty. - */ - tcsetpgrp(tty_fd, restore_ttypgrp); - setpgid(0, restore_ttypgrp); - } -# endif /* TTY_PGRP */ - if (Flag(FMONITOR)) { - Flag(FMONITOR) = 0; - j_change(); - } -#endif /* JOBS */ -} - -#ifdef JOBS -/* turn job control on or off according to Flag(FMONITOR) */ -void -j_change(void) -{ - int i; - - if (Flag(FMONITOR)) { - /* Don't call tcgetattr() 'til we own the tty process group */ - tty_init(false); - -# ifdef TTY_PGRP - /* no controlling tty, no SIGT* */ - ttypgrp_ok = tty_fd >= 0 && tty_devtty; - - if (ttypgrp_ok && (our_pgrp = getpgID()) < 0) { - warningf(false, "j_init: getpgrp() failed: %s", - strerror(errno)); - ttypgrp_ok = 0; - } - if (ttypgrp_ok) { - setsig(&sigtraps[SIGTTIN], SIG_DFL, - SS_RESTORE_ORIG|SS_FORCE); - /* wait to be given tty (POSIX.1, B.2, job control) */ - while (1) { - pid_t ttypgrp; - - if ((ttypgrp = tcgetpgrp(tty_fd)) < 0) { - warningf(false, - "j_init: tcgetpgrp() failed: %s", - strerror(errno)); - ttypgrp_ok = 0; - break; - } - if (ttypgrp == our_pgrp) - break; - kill(0, SIGTTIN); - } - } - for (i = NELEM(tt_sigs); --i >= 0; ) - setsig(&sigtraps[tt_sigs[i]], SIG_IGN, - SS_RESTORE_DFL|SS_FORCE); - if (ttypgrp_ok && our_pgrp != kshpid) { - if (setpgid(0, kshpid) < 0) { - warningf(false, - "j_init: setpgid() failed: %s", - strerror(errno)); - ttypgrp_ok = 0; - } else { - if (tcsetpgrp(tty_fd, kshpid) < 0) { - warningf(false, - "j_init: tcsetpgrp() failed: %s", - strerror(errno)); - ttypgrp_ok = 0; - } else - restore_ttypgrp = our_pgrp; - our_pgrp = kshpid; - } - } -# if defined(NTTYDISC) && defined(TIOCSETD) && !defined(HAVE_TERMIOS_H) && !defined(HAVE_TERMIO_H) - if (ttypgrp_ok) { - int ldisc = NTTYDISC; - - if (ioctl(tty_fd, TIOCSETD, &ldisc) < 0) - warningf(false, - "j_init: can't set new line discipline: %s", - strerror(errno)); - } -# endif /* NTTYDISC && TIOCSETD */ - if (!ttypgrp_ok) - warningf(false, "warning: won't have full job control"); -# endif /* TTY_PGRP */ - if (tty_fd >= 0) - tcgetattr(tty_fd, &tty_state); - } else { -# ifdef TTY_PGRP - ttypgrp_ok = 0; - if (Flag(FTALKING)) - for (i = NELEM(tt_sigs); --i >= 0; ) - setsig(&sigtraps[tt_sigs[i]], SIG_IGN, - SS_RESTORE_IGN|SS_FORCE); - else - for (i = NELEM(tt_sigs); --i >= 0; ) { - if (sigtraps[tt_sigs[i]].flags & (TF_ORIG_IGN - |TF_ORIG_DFL)) - setsig(&sigtraps[tt_sigs[i]], - (sigtraps[tt_sigs[i]].flags & TF_ORIG_IGN) ? SIG_IGN : SIG_DFL, - SS_RESTORE_ORIG|SS_FORCE); - } -# endif /* TTY_PGRP */ - if (!Flag(FTALKING)) - tty_close(); - } -} -#endif /* JOBS */ - -/* execute tree in child subprocess */ -int -exchild(struct op *t, int flags, int close_fd) - - - /* used if XPCLOSE or XCCLOSE */ -{ - static Proc *last_proc; /* for pipelines */ - - int i; -#ifdef JOB_SIGS - sigset_t omask; -#endif /* JOB_SIGS */ - Proc *p; - Job *j; - int rv = 0; - int forksleep; - int ischild; - - if (flags & XEXEC) - /* Clear XFORK|XPCLOSE|XCCLOSE|XCOPROC|XPIPEO|XPIPEI|XXCOM|XBGND - * (also done in another execute() below) - */ - return execute(t, flags & (XEXEC | XERROK)); - -#ifdef JOB_SIGS - /* no SIGCHLD's while messing with job and process lists */ - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - - p = new_proc(); - p->next = NULL; - p->state = PRUNNING; - WSTATUS(p->status) = 0; - p->pid = 0; - - /* link process into jobs list */ - if (flags&XPIPEI) { /* continuing with a pipe */ - if (!last_job) - internal_errorf(1, "exchild: XPIPEI and no last_job - pid %d", (int) procpid); - j = last_job; - last_proc->next = p; - last_proc = p; - } else { -#ifdef NEED_PGRP_SYNC - if (j_sync_open) { /* should never happen */ - j_sync_open = 0; - closepipe(j_sync_pipe); - } - /* don't do the sync pipe business if there is no pipeline */ - if (flags & XPIPEO) { - openpipe(j_sync_pipe); - j_sync_open = 1; - } -#endif /* NEED_PGRP_SYNC */ - j = new_job(); /* fills in j->job */ - /* we don't consider XXCOM's foreground since they don't get - * tty process group and we don't save or restore tty modes. - */ - j->flags = (flags & XXCOM) ? JF_XXCOM - : ((flags & XBGND) ? 0 : (JF_FG|JF_USETTYMODE)); - timerclear(&j->usrtime); - timerclear(&j->systime); - j->state = PRUNNING; - j->pgrp = 0; - j->ppid = procpid; - j->age = ++njobs; - j->proc_list = p; - j->coproc_id = 0; - last_job = j; - last_proc = p; - put_job(j, PJ_PAST_STOPPED); - } - - snptreef(p->command, sizeof(p->command), "%T", t); - - /* create child process */ - forksleep = 1; - while ((i = fork()) < 0 && errno == EAGAIN && forksleep < 32) { - if (intrsig) /* allow user to ^C out... */ - break; - sleep(forksleep); - forksleep <<= 1; - } - if (i < 0) { - kill_job(j, SIGKILL); - remove_job(j, "fork failed"); -#ifdef NEED_PGRP_SYNC - if (j_sync_open) { - closepipe(j_sync_pipe); - j_sync_open = 0; - } -#endif /* NEED_PGRP_SYNC */ -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - errorf("cannot fork - try again"); - } - ischild = i == 0; - if (ischild) - p->pid = procpid = getpid(); - else - p->pid = i; - -#ifdef JOBS - /* job control set up */ - if (Flag(FMONITOR) && !(flags&XXCOM)) { - int dotty = 0; -# ifdef NEED_PGRP_SYNC - int first_child_sync = 0; -# endif /* NEED_PGRP_SYNC */ - -# ifdef NEED_PGRP_SYNC - if (j_sync_open) { - /* - * The Parent closes 0, keeps 1 open 'til the whole - * pipeline is started. The First child closes 1, - * keeps 0 open (reads from it). The remaining - * children just have to close 1 (parent has already - * closeed 0). - */ - if (j->pgrp == 0) { /* First process */ - close(j_sync_pipe[ischild]); - j_sync_pipe[ischild] = -1; - first_child_sync = ischild; - } else if (ischild) { - j_sync_open = 0; - closepipe(j_sync_pipe); - } - } -# endif /* NEED_PGRP_SYNC */ - if (j->pgrp == 0) { /* First process */ - j->pgrp = p->pid; - dotty = 1; - } - - /* set pgrp in both parent and child to deal with race - * condition - */ - setpgid(p->pid, j->pgrp); -# ifdef TTY_PGRP - /* YYY: should this be - if (ttypgrp_ok && ischild && !(flags&XBGND)) - tcsetpgrp(tty_fd, j->pgrp); - instead? (see also YYY below) - */ - if (ttypgrp_ok && dotty && !(flags & XBGND)) - tcsetpgrp(tty_fd, j->pgrp); -# endif /* TTY_PGRP */ -# ifdef NEED_PGRP_SYNC - if (first_child_sync) { - char c; - while (read(j_sync_pipe[0], &c, 1) == -1 - && errno == EINTR) - ; - close(j_sync_pipe[0]); - j_sync_open = 0; - } -# endif /* NEED_PGRP_SYNC */ - } -#endif /* JOBS */ - - /* used to close pipe input fd */ - if (close_fd >= 0 && (((flags & XPCLOSE) && !ischild) - || ((flags & XCCLOSE) && ischild))) - close(close_fd); - if (ischild) { /* child */ - /* Do this before restoring signal */ - if (flags & XCOPROC) - coproc_cleanup(false); -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - cleanup_parents_env(); -#ifdef TTY_PGRP - /* If FMONITOR or FTALKING is set, these signals are ignored, - * if neither FMONITOR nor FTALKING are set, the signals have - * their inherited values. - */ - if (Flag(FMONITOR) && !(flags & XXCOM)) { - for (i = NELEM(tt_sigs); --i >= 0; ) - setsig(&sigtraps[tt_sigs[i]], SIG_DFL, - SS_RESTORE_DFL|SS_FORCE); - } -#endif /* TTY_PGRP */ -#ifdef HAVE_NICE - if (Flag(FBGNICE) && (flags & XBGND)) - nice(4); -#endif /* HAVE_NICE */ - if ((flags & XBGND) && !Flag(FMONITOR)) { - setsig(&sigtraps[SIGINT], SIG_IGN, - SS_RESTORE_IGN|SS_FORCE); - setsig(&sigtraps[SIGQUIT], SIG_IGN, - SS_RESTORE_IGN|SS_FORCE); - if (!(flags & (XPIPEI | XCOPROC))) { - int fd = open("/dev/null", 0); - if (fd != 0) { - (void) ksh_dup2(fd, 0, true); - close(fd); - } - } - } - remove_job(j, "child"); /* in case of 'jobs' command */ - nzombie = 0; -#ifdef JOBS - ttypgrp_ok = 0; - Flag(FMONITOR) = 0; -#endif /* JOBS */ - Flag(FTALKING) = 0; - tty_close(); - cleartraps(); - execute(t, (flags & XERROK) | XEXEC); /* no return */ - internal_errorf(0, "exchild: execute() returned"); - unwind(LLEAVE); - /* NOTREACHED */ - } - - /* shell (parent) stuff */ - /* Ensure next child gets a (slightly) different $RANDOM sequence */ - change_random(); - if (!(flags & XPIPEO)) { /* last process in a job */ -#ifdef TTY_PGRP - /* YYY: Is this needed? (see also YYY above) - if (Flag(FMONITOR) && !(flags&(XXCOM|XBGND))) - tcsetpgrp(tty_fd, j->pgrp); - */ -#endif /* TTY_PGRP */ - j_startjob(j); - if (flags & XCOPROC) { - j->coproc_id = coproc.id; - coproc.njobs++; /* n jobs using co-process output */ - coproc.job = (void *) j; /* j using co-process input */ - } - if (flags & XBGND) { - j_set_async(j); - if (Flag(FTALKING)) { - shf_fprintf(shl_out, "[%d]", j->job); - for (p = j->proc_list; p; p = p->next) - shf_fprintf(shl_out, " %d", p->pid); - shf_putchar('\n', shl_out); - shf_flush(shl_out); - } - } else - rv = j_waitj(j, JW_NONE, "jw:last proc"); - } - -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - - return rv; -} - -/* start the last job: only used for `command` jobs */ -void -startlast(void) -{ -#ifdef JOB_SIGS - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - - if (last_job) { /* no need to report error - waitlast() will do it */ - /* ensure it isn't removed by check_job() */ - last_job->flags |= JF_WAITING; - j_startjob(last_job); - } -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ -} - -/* wait for last job: only used for `command` jobs */ -int -waitlast(void) -{ - int rv; - Job *j; -#ifdef JOB_SIGS - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - - j = last_job; - if (!j || !(j->flags & JF_STARTED)) { - if (!j) - warningf(true, "waitlast: no last job"); - else - internal_errorf(0, "waitlast: not started"); -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - return 125; /* not so arbitrary, non-zero value */ - } - - rv = j_waitj(j, JW_NONE, "jw:waitlast"); - -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - - return rv; -} - -/* wait for child, interruptable. */ -int -waitfor(const char *cp, int *sigp) -{ - int rv; - Job *j; - int ecode; - int flags = JW_INTERRUPT|JW_ASYNCNOTIFY; -#ifdef JOB_SIGS - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - - *sigp = 0; - - if (cp == NULL) { - /* wait for an unspecified job - always returns 0, so - * don't have to worry about exited/signaled jobs - */ - for (j = job_list; j; j = j->next) - /* at&t ksh will wait for stopped jobs - we don't */ - if (j->ppid == procpid && j->state == PRUNNING) - break; - if (!j) { -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - return -1; - } - } else if ((j = j_lookup(cp, &ecode))) { - /* don't report normal job completion */ - flags &= ~JW_ASYNCNOTIFY; - if (j->ppid != procpid) { -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - return -1; - } - } else { -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - if (ecode != JL_NOSUCH) - bi_errorf("%s: %s", cp, lookup_msgs[ecode]); - return -1; - } - - /* at&t ksh will wait for stopped jobs - we don't */ - rv = j_waitj(j, flags, "jw:waitfor"); - -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - - if (rv < 0) /* we were interrupted */ - *sigp = 128 + -rv; - - return rv; -} - -/* kill (built-in) a job */ -int -j_kill(const char *cp, int sig) -{ - Job *j; - int rv = 0; - int ecode; -#ifdef JOB_SIGS - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - - if ((j = j_lookup(cp, &ecode)) == NULL) { -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - bi_errorf("%s: %s", cp, lookup_msgs[ecode]); - return 1; - } - - if (j->pgrp == 0) { /* started when !Flag(FMONITOR) */ - if (kill_job(j, sig) < 0) { - bi_errorf("%s: %s", cp, strerror(errno)); - rv = 1; - } - } else { -#ifdef JOBS - if (j->state == PSTOPPED && (sig == SIGTERM || sig == SIGHUP)) - (void) killpg(j->pgrp, SIGCONT); -#endif /* JOBS */ - if (killpg(j->pgrp, sig) < 0) { - bi_errorf("%s: %s", cp, strerror(errno)); - rv = 1; - } - } - -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - - return rv; -} - -#ifdef JOBS -/* fg and bg built-ins: called only if Flag(FMONITOR) set */ -int -j_resume(const char *cp, int bg) -{ - Job *j; - Proc *p; - int ecode; - int running; - int rv = 0; - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); - - if ((j = j_lookup(cp, &ecode)) == NULL) { - sigprocmask(SIG_SETMASK, &omask, NULL); - bi_errorf("%s: %s", cp, lookup_msgs[ecode]); - return 1; - } - - if (j->pgrp == 0) { - sigprocmask(SIG_SETMASK, &omask, NULL); - bi_errorf("job not job-controlled"); - return 1; - } - - if (bg) - shprintf("[%d] ", j->job); - - running = 0; - for (p = j->proc_list; p != NULL; p = p->next) { - if (p->state == PSTOPPED) { - p->state = PRUNNING; - WSTATUS(p->status) = 0; - running = 1; - } - shprintf("%s%s", p->command, p->next ? "| " : null); - } - shprintf(newline); - shf_flush(shl_stdout); - if (running) - j->state = PRUNNING; - - put_job(j, PJ_PAST_STOPPED); - if (bg) - j_set_async(j); - else { -# ifdef TTY_PGRP - /* attach tty to job */ - if (j->state == PRUNNING) { - if (ttypgrp_ok && (j->flags & JF_SAVEDTTY)) - tcsetattr(tty_fd, TCSADRAIN, &j->ttystate); - /* See comment in j_waitj regarding saved_ttypgrp. */ - if (ttypgrp_ok && tcsetpgrp(tty_fd, (j->flags & JF_SAVEDTTYPGRP) ? j->saved_ttypgrp : j->pgrp) < 0) { - if (j->flags & JF_SAVEDTTY) - tcsetattr(tty_fd, TCSADRAIN, &tty_state); - sigprocmask(SIG_SETMASK, &omask, - NULL); - bi_errorf("1st tcsetpgrp(%d, %d) failed: %s", - tty_fd, (int) ((j->flags & JF_SAVEDTTYPGRP) ? j->saved_ttypgrp : j->pgrp), strerror(errno)); - return 1; - } - } -# endif /* TTY_PGRP */ - j->flags |= JF_FG; - j->flags &= ~JF_KNOWN; - if (j == async_job) - async_job = NULL; - } - - if (j->state == PRUNNING && killpg(j->pgrp, SIGCONT) < 0) { - int err = errno; - - if (!bg) { - j->flags &= ~JF_FG; -# ifdef TTY_PGRP - if (ttypgrp_ok && (j->flags & JF_SAVEDTTY)) - tcsetattr(tty_fd, TCSADRAIN, &tty_state); - if (ttypgrp_ok && tcsetpgrp(tty_fd, our_pgrp) < 0) { - warningf(true, - "fg: 2nd tcsetpgrp(%d, %d) failed: %s", - tty_fd, (int) our_pgrp, - strerror(errno)); - } -# endif /* TTY_PGRP */ - } - sigprocmask(SIG_SETMASK, &omask, NULL); - bi_errorf("cannot continue job %s: %s", - cp, strerror(err)); - return 1; - } - if (!bg) { -# ifdef TTY_PGRP - if (ttypgrp_ok) { - j->flags &= ~(JF_SAVEDTTY | JF_SAVEDTTYPGRP); - } -# endif /* TTY_PGRP */ - rv = j_waitj(j, JW_NONE, "jw:resume"); - } - sigprocmask(SIG_SETMASK, &omask, NULL); - return rv; -} -#endif /* JOBS */ - -/* are there any running or stopped jobs ? */ -int -j_stopped_running(void) -{ - Job *j; - int which = 0; - - for (j = job_list; j != NULL; j = j->next) { -#ifdef JOBS - if (j->ppid == procpid && j->state == PSTOPPED) - which |= 1; -#endif /* JOBS */ - if (Flag(FLOGIN) && !Flag(FNOHUP) && procpid == kshpid - && j->ppid == procpid && j->state == PRUNNING) - which |= 2; - } - if (which) { - shellf("You have %s%s%s jobs\n", - which & 1 ? "stopped" : "", - which == 3 ? " and " : "", - which & 2 ? "running" : ""); - return 1; - } - - return 0; -} - -/* list jobs for jobs built-in */ -int -j_jobs(const char *cp, int slp, int nflag) - - /* 0: short, 1: long, 2: pgrp */ - -{ - Job *j, *tmp; - int how; - int zflag = 0; -#ifdef JOB_SIGS - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - - if (nflag < 0) { /* kludge: print zombies */ - nflag = 0; - zflag = 1; - } - if (cp) { - int ecode; - - if ((j = j_lookup(cp, &ecode)) == NULL) { -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - bi_errorf("%s: %s", cp, lookup_msgs[ecode]); - return 1; - } - } else - j = job_list; - how = slp == 0 ? JP_MEDIUM : (slp == 1 ? JP_LONG : JP_PGRP); - for (; j; j = j->next) { - if ((!(j->flags & JF_ZOMBIE) || zflag) - && (!nflag || (j->flags & JF_CHANGED))) - { - j_print(j, how, shl_stdout); - if (j->state == PEXITED || j->state == PSIGNALLED) - j->flags |= JF_REMOVE; - } - if (cp) - break; - } - /* Remove jobs after printing so there won't be multiple + or - jobs */ - for (j = job_list; j; j = tmp) { - tmp = j->next; - if (j->flags & JF_REMOVE) - remove_job(j, "jobs"); - } -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - return 0; -} - -/* list jobs for top-level notification */ -void -j_notify(void) -{ - Job *j, *tmp; -#ifdef JOB_SIGS - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - for (j = job_list; j; j = j->next) { -#ifdef JOBS - if (Flag(FMONITOR) && (j->flags & JF_CHANGED)) - j_print(j, JP_MEDIUM, shl_out); -#endif /* JOBS */ - /* Remove job after doing reports so there aren't - * multiple +/- jobs. - */ - if (j->state == PEXITED || j->state == PSIGNALLED) - j->flags |= JF_REMOVE; - } - for (j = job_list; j; j = tmp) { - tmp = j->next; - if (j->flags & JF_REMOVE) - remove_job(j, "notify"); - } - shf_flush(shl_out); -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ -} - -/* Return pid of last process in last asynchronous job */ -pid_t -j_async(void) -{ -#ifdef JOB_SIGS - sigset_t omask; - - sigprocmask(SIG_BLOCK, &sm_sigchld, &omask); -#endif /* JOB_SIGS */ - - if (async_job) - async_job->flags |= JF_KNOWN; - -#ifdef JOB_SIGS - sigprocmask(SIG_SETMASK, &omask, NULL); -#endif /* JOB_SIGS */ - - return async_pid; -} - -/* Make j the last async process - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static void -j_set_async(Job *j) -{ - Job *jl, *oldest; - - if (async_job && (async_job->flags & (JF_KNOWN|JF_ZOMBIE)) == JF_ZOMBIE) - remove_job(async_job, "async"); - if (!(j->flags & JF_STARTED)) { - internal_errorf(0, "j_async: job not started"); - return; - } - async_job = j; - async_pid = j->last_proc->pid; - while (nzombie > child_max) { - oldest = NULL; - for (jl = job_list; jl; jl = jl->next) - if (jl != async_job && (jl->flags & JF_ZOMBIE) - && (!oldest || jl->age < oldest->age)) - oldest = jl; - if (!oldest) { - /* XXX debugging */ - if (!(async_job->flags & JF_ZOMBIE) || nzombie != 1) { - internal_errorf(0, "j_async: bad nzombie (%d)", nzombie); - nzombie = 0; - } - break; - } - remove_job(oldest, "zombie"); - } -} - -/* Start a job: set STARTED, check for held signals and set j->last_proc - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static void -j_startjob(Job *j) -{ - Proc *p; - - j->flags |= JF_STARTED; - for (p = j->proc_list; p->next; p = p->next) - ; - j->last_proc = p; - -#ifdef NEED_PGRP_SYNC - if (j_sync_open) { - j_sync_open = 0; - closepipe(j_sync_pipe); - } -#endif /* NEED_PGRP_SYNC */ -#ifdef JOB_SIGS - if (held_sigchld) { - held_sigchld = 0; - /* Don't call j_sigchld() as it may remove job... */ - kill(procpid, SIGCHLD); - } -#endif /* JOB_SIGS */ -} - -/* - * wait for job to complete or change state - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static int -j_waitj(Job *j, int flags, const char *where) - - /* see JW_* */ - -{ - int rv; - - /* - * No auto-notify on the job we are waiting on. - */ - j->flags |= JF_WAITING; - if (flags & JW_ASYNCNOTIFY) - j->flags |= JF_W_ASYNCNOTIFY; - - if (!Flag(FMONITOR)) - flags |= JW_STOPPEDWAIT; - - while ((volatile int) j->state == PRUNNING - || ((flags & JW_STOPPEDWAIT) - && (volatile int) j->state == PSTOPPED)) - { -#ifdef JOB_SIGS - sigsuspend(&sm_default); -#else /* JOB_SIGS */ - j_sigchld(SIGCHLD); -#endif /* JOB_SIGS */ - if (fatal_trap) { - int oldf = j->flags & (JF_WAITING|JF_W_ASYNCNOTIFY); - j->flags &= ~(JF_WAITING|JF_W_ASYNCNOTIFY); - runtraps(TF_FATAL); - j->flags |= oldf; /* not reached... */ - } - if ((flags & JW_INTERRUPT) && (rv = trap_pending())) { - j->flags &= ~(JF_WAITING|JF_W_ASYNCNOTIFY); - return -rv; - } - } - j->flags &= ~(JF_WAITING|JF_W_ASYNCNOTIFY); - - if (j->flags & JF_FG) { - WAIT_T status; - - j->flags &= ~JF_FG; -#ifdef TTY_PGRP - if (Flag(FMONITOR) && ttypgrp_ok && j->pgrp) { - /* - * Save the tty's current pgrp so it can be restored - * when the job is foregrounded. This is to - * deal with things like the GNU su which does - * a fork/exec instead of an exec (the fork means - * the execed shell gets a different pid from its - * pgrp, so naturally it sets its pgrp and gets hosed - * when it gets foregrounded by the parent shell, which - * has restored the tty's pgrp to that of the su - * process). - */ - if (j->state == PSTOPPED - && (j->saved_ttypgrp = tcgetpgrp(tty_fd)) >= 0) - j->flags |= JF_SAVEDTTYPGRP; - if (tcsetpgrp(tty_fd, our_pgrp) < 0) { - warningf(true, - "j_waitj: tcsetpgrp(%d, %d) failed: %s", - tty_fd, (int) our_pgrp, - strerror(errno)); - } - if (j->state == PSTOPPED) { - j->flags |= JF_SAVEDTTY; - tcgetattr(tty_fd, &j->ttystate); - } - } -#endif /* TTY_PGRP */ - if (tty_fd >= 0) { - /* Only restore tty settings if job was originally - * started in the foreground. Problems can be - * caused by things like 'more foobar &' which will - * typically get and save the shell's vi/emacs tty - * settings before setting up the tty for itself; - * when more exits, it restores the 'original' - * settings, and things go down hill from there... - */ - if (j->state == PEXITED && j->status == 0 - && (j->flags & JF_USETTYMODE)) - { - tcgetattr(tty_fd, &tty_state); - } else { - tcsetattr(tty_fd, TCSADRAIN, &tty_state); - /* Don't use tty mode if job is stopped and - * later restarted and exits. Consider - * the sequence: - * vi foo (stopped) - * ... - * stty something - * ... - * fg (vi; ZZ) - * mode should be that of the stty, not what - * was before the vi started. - */ - if (j->state == PSTOPPED) - j->flags &= ~JF_USETTYMODE; - } - } -#ifdef JOBS - /* If it looks like user hit ^C to kill a job, pretend we got - * one too to break out of for loops, etc. (at&t ksh does this - * even when not monitoring, but this doesn't make sense since - * a tty generated ^C goes to the whole process group) - */ - status = j->last_proc->status; - if (Flag(FMONITOR) && j->state == PSIGNALLED - && WIFSIGNALED(status) - && (sigtraps[WTERMSIG(status)].flags & TF_TTY_INTR)) - trapsig(WTERMSIG(status)); -#endif /* JOBS */ - } - - j_usrtime = j->usrtime; - j_systime = j->systime; - rv = j->status; - - if (!(flags & JW_ASYNCNOTIFY) - && (!Flag(FMONITOR) || j->state != PSTOPPED)) - { - j_print(j, JP_SHORT, shl_out); - shf_flush(shl_out); - } - if (j->state != PSTOPPED - && (!Flag(FMONITOR) || !(flags & JW_ASYNCNOTIFY))) - remove_job(j, where); - - return rv; -} - -/* SIGCHLD handler to reap children and update job states - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static RETSIGTYPE -j_sigchld(int sig GCC_FUNC_ATTR(unused)) -{ - int errno_ = errno; - Job *j; - Proc UNINITIALIZED(*p); - int pid; - WAIT_T status; - struct rusage ru0, ru1; - -#ifdef JOB_SIGS - /* Don't wait for any processes if a job is partially started. - * This is so we don't do away with the process group leader - * before all the processes in a pipe line are started (so the - * setpgid() won't fail) - */ - for (j = job_list; j; j = j->next) - if (j->ppid == procpid && !(j->flags & JF_STARTED)) { - held_sigchld = 1; - return RETSIGVAL; - } -#endif /* JOB_SIGS */ - - getrusage(RUSAGE_CHILDREN, &ru0); - do { -#ifdef JOB_SIGS - pid = ksh_waitpid(-1, &status, (WNOHANG|WUNTRACED)); -#else /* JOB_SIGS */ - pid = wait(&status); -#endif /* JOB_SIGS */ - - if (pid <= 0) /* return if would block (0) ... */ - break; /* ... or no children or interrupted (-1) */ - - getrusage(RUSAGE_CHILDREN, &ru1); - - /* find job and process structures for this pid */ - for (j = job_list; j != NULL; j = j->next) - for (p = j->proc_list; p != NULL; p = p->next) - if (p->pid == pid) - goto found; -found: - if (j == NULL) { - /* Can occur if process has kids, then execs shell - warningf(true, "bad process waited for (pid = %d)", - pid); - */ - ru0 = ru1; - continue; - } - - timeradd(&j->usrtime, &ru1.ru_utime, &j->usrtime); - timersub(&j->usrtime, &ru0.ru_utime, &j->usrtime); - timeradd(&j->systime, &ru1.ru_stime, &j->systime); - timersub(&j->systime, &ru0.ru_stime, &j->systime); - ru0 = ru1; - p->status = status; -#ifdef JOBS - if (WIFSTOPPED(status)) - p->state = PSTOPPED; - else -#endif /* JOBS */ - if (WIFSIGNALED(status)) - p->state = PSIGNALLED; - else - p->state = PEXITED; - - check_job(j); /* check to see if entire job is done */ - } -#ifdef JOB_SIGS - while (1); -#else /* JOB_SIGS */ - while (0); -#endif /* JOB_SIGS */ - - errno = errno_; - - return RETSIGVAL; -} - -/* - * Called only when a process in j has exited/stopped (ie, called only - * from j_sigchld()). If no processes are running, the job status - * and state are updated, asynchronous job notification is done and, - * if unneeded, the job is removed. - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static void -check_job(Job *j) -{ - int jstate; - Proc *p; - - /* XXX debugging (nasty - interrupt routine using shl_out) */ - if (!(j->flags & JF_STARTED)) { - internal_errorf(0, "check_job: job started (flags 0x%x)", - j->flags); - return; - } - - jstate = PRUNNING; - for (p=j->proc_list; p != NULL; p = p->next) { - if (p->state == PRUNNING) - return; /* some processes still running */ - if (p->state > jstate) - jstate = p->state; - } - j->state = jstate; - - switch (j->last_proc->state) { - case PEXITED: - j->status = WEXITSTATUS(j->last_proc->status); - break; - case PSIGNALLED: - j->status = 128 + WTERMSIG(j->last_proc->status); - break; - default: - j->status = 0; - break; - } - - /* Note when co-process dies: can't be done in j_wait() nor - * remove_job() since neither may be called for non-interactive - * shells. - */ - if (j->state == PEXITED || j->state == PSIGNALLED) { - /* No need to keep co-process input any more - * (at least, this is what ksh93d thinks) - */ - if (coproc.job == j) { - coproc.job = NULL; - /* XXX would be nice to get the closes out of here - * so they aren't done in the signal handler. - * Would mean a check in coproc_getfd() to - * do "if job == 0 && write >= 0, close write". - */ - coproc_write_close(coproc.write); - } - /* Do we need to keep the output? */ - if (j->coproc_id && j->coproc_id == coproc.id - && --coproc.njobs == 0) - coproc_readw_close(coproc.read); - } - - j->flags |= JF_CHANGED; -#ifdef JOBS - if (Flag(FMONITOR) && !(j->flags & JF_XXCOM)) { - /* Only put stopped jobs at the front to avoid confusing - * the user (don't want finished jobs effecting %+ or %-) - */ - if (j->state == PSTOPPED) - put_job(j, PJ_ON_FRONT); - if (Flag(FNOTIFY) - && (j->flags & (JF_WAITING|JF_W_ASYNCNOTIFY)) != JF_WAITING) - { - /* Look for the real file descriptor 2 */ - { - struct env *ep; - int fd = 2; - - for (ep = e; ep; ep = ep->oenv) - if (ep->savefd && ep->savefd[2]) - fd = ep->savefd[2]; - shf_reopen(fd, SHF_WR, shl_j); - } - /* Can't call j_notify() as it removes jobs. The job - * must stay in the job list as j_waitj() may be - * running with this job. - */ - j_print(j, JP_MEDIUM, shl_j); - shf_flush(shl_j); - if (!(j->flags & JF_WAITING) && j->state != PSTOPPED) - remove_job(j, "notify"); - } - } -#endif /* JOBS */ - if (!Flag(FMONITOR) && !(j->flags & (JF_WAITING|JF_FG)) - && j->state != PSTOPPED) - { - if (j == async_job || (j->flags & JF_KNOWN)) { - j->flags |= JF_ZOMBIE; - j->job = -1; - nzombie++; - } else - remove_job(j, "checkjob"); - } -} - -/* - * Print job status in either short, medium or long format. - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static void -j_print(Job *j, int how, struct shf *shf) -{ - Proc *p; - int state; - WAIT_T status; - int coredumped; - char jobchar = ' '; - char buf[64]; - const char *filler; - int output = 0; - - if (how == JP_PGRP) { - /* POSIX doesn't say what to do it there is no process - * group leader (ie, !FMONITOR). We arbitrarily return - * last pid (which is what $! returns). - */ - shf_fprintf(shf, "%d\n", j->pgrp ? j->pgrp - : (j->last_proc ? j->last_proc->pid : 0)); - return; - } - j->flags &= ~JF_CHANGED; - filler = j->job > 10 ? "\n " : "\n "; - if (j == job_list) - jobchar = '+'; - else if (j == job_list->next) - jobchar = '-'; - - for (p = j->proc_list; p != NULL;) { - coredumped = 0; - switch (p->state) { - case PRUNNING: - strlcpy(buf, "Running", sizeof buf); - break; - case PSTOPPED: - strlcpy(buf, sigtraps[WSTOPSIG(p->status)].mess, - sizeof buf); - break; - case PEXITED: - if (how == JP_SHORT) - buf[0] = '\0'; - else if (WEXITSTATUS(p->status) == 0) - strlcpy(buf, "Done", sizeof buf); - else - shf_snprintf(buf, sizeof(buf), "Done (%d)", - WEXITSTATUS(p->status)); - break; - case PSIGNALLED: - if (WIFCORED(p->status)) - coredumped = 1; - /* kludge for not reporting 'normal termination signals' - * (ie, SIGINT, SIGPIPE) - */ - if (how == JP_SHORT && !coredumped - && (WTERMSIG(p->status) == SIGINT - || WTERMSIG(p->status) == SIGPIPE)) { - buf[0] = '\0'; - } else - strlcpy(buf, sigtraps[WTERMSIG(p->status)].mess, - sizeof buf); - break; - } - - if (how != JP_SHORT) { - if (p == j->proc_list) - shf_fprintf(shf, "[%d] %c ", j->job, jobchar); - else - shf_fprintf(shf, "%s", filler); - } - - if (how == JP_LONG) - shf_fprintf(shf, "%5d ", p->pid); - - if (how == JP_SHORT) { - if (buf[0]) { - output = 1; - shf_fprintf(shf, "%s%s ", - buf, coredumped ? " (core dumped)" : null); - } - } else { - output = 1; - shf_fprintf(shf, "%-20s %s%s%s", buf, p->command, - p->next ? "|" : null, - coredumped ? " (core dumped)" : null); - } - - state = p->state; - status = p->status; - p = p->next; - while (p && p->state == state - && WSTATUS(p->status) == WSTATUS(status)) - { - if (how == JP_LONG) - shf_fprintf(shf, "%s%5d %-20s %s%s", filler, p->pid, - space, p->command, p->next ? "|" : null); - else if (how == JP_MEDIUM) - shf_fprintf(shf, " %s%s", p->command, - p->next ? "|" : null); - p = p->next; - } - } - if (output) - shf_fprintf(shf, newline); -} - -/* Convert % sequence to job - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static Job * -j_lookup(const char *cp, int *ecodep) -{ - Job *j, *last_match; - Proc *p; - int len, job = 0; - - if (digit(*cp)) { - job = atoi(cp); - /* Look for last_proc->pid (what $! returns) first... */ - for (j = job_list; j != NULL; j = j->next) - if (j->last_proc && j->last_proc->pid == job) - return j; - /* ...then look for process group (this is non-POSIX), - * but should not break anything (so FPOSIX isn't used). - */ - for (j = job_list; j != NULL; j = j->next) - if (j->pgrp && j->pgrp == job) - return j; - if (ecodep) - *ecodep = JL_NOSUCH; - return NULL; - } - if (*cp != '%') { - if (ecodep) - *ecodep = JL_INVALID; - return NULL; - } - switch (*++cp) { - case '\0': /* non-standard */ - case '+': - case '%': - if (job_list != NULL) - return job_list; - break; - - case '-': - if (job_list != NULL && job_list->next) - return job_list->next; - break; - - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - job = atoi(cp); - for (j = job_list; j != NULL; j = j->next) - if (j->job == job) - return j; - break; - - case '?': /* %?string */ - last_match = NULL; - for (j = job_list; j != NULL; j = j->next) - for (p = j->proc_list; p != NULL; p = p->next) - if (strstr(p->command, cp+1) != NULL) { - if (last_match) { - if (ecodep) - *ecodep = JL_AMBIG; - return NULL; - } - last_match = j; - } - if (last_match) - return last_match; - break; - - default: /* %string */ - len = strlen(cp); - last_match = NULL; - for (j = job_list; j != NULL; j = j->next) - if (strncmp(cp, j->proc_list->command, len) == 0) { - if (last_match) { - if (ecodep) - *ecodep = JL_AMBIG; - return NULL; - } - last_match = j; - } - if (last_match) - return last_match; - break; - } - if (ecodep) - *ecodep = JL_NOSUCH; - return NULL; -} - -static Job *free_jobs; -static Proc *free_procs; - -/* allocate a new job and fill in the job number. - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static Job * -new_job(void) -{ - int i; - Job *newj, *j; - - if (free_jobs != NULL) { - newj = free_jobs; - free_jobs = free_jobs->next; - } else - newj = (Job *) alloc(sizeof(Job), APERM); - - /* brute force method */ - for (i = 1; ; i++) { - for (j = job_list; j && j->job != i; j = j->next) - ; - if (j == NULL) - break; - } - newj->job = i; - - return newj; -} - -/* Allocate new process strut - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static Proc * -new_proc(void) -{ - Proc *p; - - if (free_procs != NULL) { - p = free_procs; - free_procs = free_procs->next; - } else - p = (Proc *) alloc(sizeof(Proc), APERM); - - return p; -} - -/* Take job out of job_list and put old structures into free list. - * Keeps nzombies, last_job and async_job up to date. - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static void -remove_job(Job *j, const char *where) -{ - Proc *p, *tmp; - Job **prev, *curr; - - prev = &job_list; - curr = *prev; - for (; curr != NULL && curr != j; prev = &curr->next, curr = *prev) - ; - if (curr != j) { - internal_errorf(0, "remove_job: job not found (%s)", where); - return; - } - *prev = curr->next; - - /* free up proc structures */ - for (p = j->proc_list; p != NULL; ) { - tmp = p; - p = p->next; - tmp->next = free_procs; - free_procs = tmp; - } - - if ((j->flags & JF_ZOMBIE) && j->ppid == procpid) - --nzombie; - j->next = free_jobs; - free_jobs = j; - - if (j == last_job) - last_job = NULL; - if (j == async_job) - async_job = NULL; -} - -/* put j in a particular location (taking it out job_list if it is there - * already) - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static void -put_job(Job *j, int where) -{ - Job **prev, *curr; - - /* Remove job from list (if there) */ - prev = &job_list; - curr = job_list; - for (; curr && curr != j; prev = &curr->next, curr = *prev) - ; - if (curr == j) - *prev = curr->next; - - switch (where) { - case PJ_ON_FRONT: - j->next = job_list; - job_list = j; - break; - - case PJ_PAST_STOPPED: - prev = &job_list; - curr = job_list; - for (; curr && curr->state == PSTOPPED; prev = &curr->next, - curr = *prev) - ; - j->next = curr; - *prev = j; - break; - } -} - -/* nuke a job (called when unable to start full job). - * - * If jobs are compiled in then this routine expects sigchld to be blocked. - */ -static int -kill_job(Job *j, int sig) -{ - Proc *p; - int rval = 0; - - for (p = j->proc_list; p != NULL; p = p->next) - if (p->pid != 0) - if (kill(p->pid, sig) < 0) - rval = -1; - return rval; -} diff --git a/ksh.1 b/ksh.1 deleted file mode 100644 index 566e563..0000000 --- a/ksh.1 +++ /dev/null @@ -1,5367 +0,0 @@ -.\" $MirOS$ -.\" $OpenBSD: ksh.1tbl,v 1.84 2004/12/22 18:58:44 millert Exp $ -.\" $OpenBSD: sh.1tbl,v 1.53 2004/12/10 01:56:56 jaredy Exp $ -.\" -.\" Public Domain. -.\" -.Dd November 10, 2004 -.Dt KSH 1 -.Os MirOS -.\" define Mx macro for portable mksh, just in case... -.de Mx -.nr cF \\n(.f -.nr cZ \\n(.s -.ds aa \&\f\\n(cF\s\\n(cZ -.if \\n(aC==0 \{\ -. if \\n(.$==0 \&MirOS\\*(aa -.\} -.if \\n(.$==1 \{\ -. if "\\$1"6" \&MirOS #6\\*(aa -. if "\\$1"." \&MirOS\\$1\\*(aa -. if "\\$1"," \&MirOS\\$1\\*(aa -. if "\\$1"MirBSD" \&MirBSD\\*(aa -.\} -.. -.Sh NAME -.Nm ksh , -.Nm sh , -.Nm mksh -.Nd MirBSD Korn/Bourne shell -.Sh SYNOPSIS -.Nm -.Op Fl +abCefhiklmnprsuvxX -.Op Fl T Ar /dev/ttyCn -.Op Fl +o Ar option -.Xo -.Bk -words -.Oo Oo Fl c Ar command-string -.Op Ar command-name -.Li \&| Fl s -.Li \&| Ar file Oc -.Ek -.Op Ar argument ... Oc -.Xc -.Sh DESCRIPTION -.Nm -is a command interpreter intended for both interactive and shell -script use. -Its command language is a superset of the -.Xr sh C -shell language and compatible to the original Korn shell. -.Nm mksh -is derived from -.Nm pdksh , -the public domain Korn shell. -.Ss Shell startup -The following options can be specified only on the command line: -.Bl -tag -width Ds -.It Fl c Ar command-string -.Nm -will execute the command(s) contained in -.Ar command-string . -.It Fl i -Interactive mode; see below. -.It Fl l -Login shell; see below. -.It Fl s -The shell reads commands from standard input; all non-option arguments -are positional parameters. -.It Fl r -Restricted mode; see below. -.It Fl T Ar tty -Spawn -.Nm -on -.Xr tty 4 -device given. -Superuser only. -.El -.Pp -In addition to the above, the options described in the -.Ic set -built-in command can also be used on the command line. -.Pp -If neither the -.Fl c -nor the -.Fl s -option is specified, the first non-option argument specifies the name -of a file the shell reads commands from. -If there are no non-option -arguments, the shell reads commands from the standard input. -The name of -the shell (i.e., the contents of -.Ic $0 ) -is determined as follows: if the -.Fl c -option is used and there is a non-option argument, it is used as the name; -if commands are being read from a file, the file is used as the name; -otherwise, the name the shell was called with (i.e., -.Li argv[0] ) -is used. -.Pp -A shell is -.Dq interactive -if the -.Fl i -option is used or if both standard input and standard error are attached to a -.Xr tty 4 . -An interactive shell has job control enabled (if available), ignores the -.Dv SIGINT , -.Dv SIGQUIT -and -.Dv SIGTERM -signals and prints prompts before reading input (see -.Ev PS1 -and -.Ev PS2 -parameters). -For non-interactive shells, the -.Ic trackall -option is on by default (see the -.Ic set -command below). -.Pp -If the -.Fl T Ar ttydev -option is given, an interactive shell is spawned in the background -with the given device as controlling terminal. -The terminal devices are probed in the following order: -.Bl -enum -compact -.It -ttydev -.It -.Pa /dev/ttyC Ns ttydev -.It -.Pa /dev/tty Ns ttydev -.El -.Pp -A shell is -.Dq restricted -if the -.Fl r -option is used or if either the basename of the name the shell was invoked -with or the -.Ev SHELL -parameter match the pattern -.Dq \&*r\&*sh -(e.g., -.Dq rsh , -.Dq rmksh , -.Dq rpdksh , -etc.). -The following restrictions come into effect after the shell processes any -profile and -.Ev ENV -files: -.Pp -.Bl -bullet -compact -.It -The -.Ic cd -command is disabled. -.It -The -.Ev SHELL , -.Ev ENV -and -.Ev PATH -parameters cannot be changed. -.It -Command names can't be specified with absolute or relative paths. -.It -The -.Fl p -option of the built-in command -.Ic command -can't be used. -.It -Redirections that create files can't be used (i.e., -.Ql > , -.Ql >| , -.Ql >> , -.Ql <> ) . -.El -.Pp -A shell is -.Dq privileged -if the -.Fl p -option is used or if the real user ID or group ID does not match the -effective user ID or group ID (see -.Xr getuid 2 -and -.Xr getgid 2 ) . -A privileged shell does not process -.Pa $HOME/.profile -nor the -.Ev ENV -parameter (see below). -Instead, the file -.Pa /etc/suid_profile -is processed. -Clearing the privileged option causes the shell to set -its effective user ID (group ID) to its real user ID (group ID). -.Pp -If the basename of the name the shell is called with (i.e., -.Li argv[0] ) -starts with -.Ql - -or if the -.Fl l -option is used, -the shell is assumed to be a login shell and the shell reads and executes -the contents of -.Pa /etc/profile -and -.Pa $HOME/.profile -if they exist and are readable. -.Pp -If the -.Ev ENV -parameter is set when the shell starts (or, in the case of login shells, -after any profiles are processed), its value is subjected to parameter, -command, arithmetic and tilde -.Pq Sq \&~ -substitution and the resulting file -(if any) is read and executed. -If the -.Ev ENV -parameter is not set (and not -.Dv NULL ) -and -.Nm -was compiled with the non-default -.Dv DEFAULT_ENV -macro defined, the file named in that macro is included (after the above -mentioned substitutions have been performed). -.Pp -The exit status of the shell is 127 if the command file specified on the -command line could not be opened, or non-zero if a fatal syntax error -occurred during the execution of a script. -In the absence of fatal errors, -the exit status is that of the last command executed, or zero if no -command is executed. -.Ss Command syntax -The shell begins parsing its input by breaking it into -.Em words . -Words, which are sequences of characters, are delimited by unquoted whitespace -characters (space, tab and newline) or meta-characters -.Po -.Ql < , -.Ql > , -.Ql | , -.Ql \&; , -.Ql ( -and -.Ql \&) -.Pc . -Aside from delimiting words, spaces and tabs are ignored, while newlines -usually delimit commands. -The meta-characters are used in building the following tokens: -.Ql < , -.Ql <& , -.Ql << , -.Ql > , -.Ql >& , -.Ql >> , -etc. are used to specify redirections (see -.Sx Input/output redirection -below); -.Ql | -is used to create pipelines; -.Ql |& -is used to create co-processes (see -.Sx Co-processes -below); -.Ql \&; -is used to separate commands; -.Ql & -is used to create asynchronous pipelines; -.Ql && -and -.Ql || -are used to specify conditional execution; -.Ql \&;\&; -is used in -.Ic case -statements; -.Ql \&(\&( .. \&)\&) -is used in arithmetic expressions; -and lastly, -.Ql \&( .. \&) -is used to create subshells. -.Pp -Whitespace and meta-characters can be quoted individually using a backslash -.Pq Sq \e -or in groups using double -.Pq Sq \&" -or single -.Pq Sq \&' -quotes. -Note that the following characters are also treated specially by the -shell and must be quoted if they are to represent themselves: -.Ql \e , -.Ql \&" , -.Ql ' , -.Ql # , -.Ql $ , -.Ql ` , -.Ql ~ , -.Ql { , -.Ql } , -.Ql * , -.Ql \&? -and -.Ql [ . -The first three of these are the above mentioned quoting characters (see -.Sx Quoting -below); -.Ql # , -if used at the beginning of a word, introduces a comment \(em everything after -the -.Ql # -up to the nearest newline is ignored; -.Ql $ -is used to introduce parameter, command and arithmetic substitutions (see -.Sx Substitution -below); -.Ql ` -introduces an old-style command substitution (see -.Sx Substitution -below); -.Ql ~ -begins a directory expansion (see -.Sx Tilde expansion -below); -.Ql { -and -.Ql } -delimit -.Xr csh 1 -style alterations (see -.Sx Brace expansion -below); -and finally, -.Ql * , -.Ql \&? -and -.Ql [ -are used in file name generation (see -.Sx File name patterns -below). -.Pp -As words and tokens are parsed, the shell builds commands, of which there -are two basic types: -.Em simple-commands , -typically programs that are executed, and -.Em compound-commands , -such as -.Ic for -and -.Ic if -statements, grouping constructs and function definitions. -.Pp -A simple-command consists of some combination of parameter assignments -(see -.Sx Parameters -below), -input/output redirections (see -.Sx Input/output redirections -below) and command words; the only restriction is that -parameter assignments come before any command words. -The command words, if any, define the command -that is to be executed and its arguments. -The command may be a shell built-in -command, a function or an external command (i.e., a separate executable file -that is located using the -.Ev PATH -parameter (see -.Sx Command execution -below)). -Note that all command constructs have an exit status: for external commands, -this is related to the status returned by -.Xr wait 2 -(if the command could not be found, the exit status is 127; if it could not -be executed, the exit status is 126); the exit status of other command -constructs (built-in commands, functions, compound-commands, pipelines, lists, -etc.) are all well-defined and are described where the construct is -described. -The exit status of a command consisting only of parameter -assignments is that of the last command substitution performed during the -parameter assignment or 0 is there were no command substitutions. -.Pp -Commands can be chained together using the -.Ql | -token to form pipelines, in which the standard output of each command but the -last is piped (see -.Xr pipe 2 ) -to the standard input of the following command. -The exit status of a pipeline is that of its last command. -A pipeline may be prefixed by the -.Ql \&! -reserved word, which causes the exit status of the pipeline to be logically -complemented: if the original status was 0, the complemented status will be 1; -if the original status was not 0, the complemented status will be 0. -.Pp -.Em Lists -of commands can be created by separating pipelines by any of the following -tokens: -.Ql && , -.Ql || , -.Ql & , -.Ql |& -and -.Ql \&; . -The first two are for conditional execution: -.Dq Ar cmd1 No && Ar cmd2 -executes -.Ar cmd2 -only if the exit status of -.Ar cmd1 -is zero; -.Ql || -is the opposite \(em -.Ar cmd2 -is executed only if the exit status of -.Ar cmd1 -is non-zero. -.Ql && -and -.Ql || -have equal precedence which is higher than that of -.Ql & , -.Ql |& -and -.Ql \&; , -which also have equal precedence. -Note that the -.Ql && -and -.Ql || -operators are -.Qq left-associative . -For example, both of these commands will print only -.Qq bar : -.Bd -literal -offset indent -false && echo foo || echo bar -true || echo foo && echo bar -.Ed -.Pp -The -.Ql & -token causes the preceding command to be executed asynchronously; that is, -the shell starts the command but does not wait for it to complete (the shell -does keep track of the status of asynchronous commands, see -.Sx Job control -below). -When an asynchronous command is started when job control is disabled -(i.e., in most scripts), the command is started with signals -.Dv SIGINT -and -.Dv SIGQUIT -ignored and with input redirected from -.Pa /dev/null -(however, redirections specified in the asynchronous command have precedence). -The -.Ql |& -operator starts a co-process which is a special kind of asynchronous process -(see -.Sx Co-processes -below). -Note that a command must follow the -.Ql && -and -.Ql || -operators, while it need not follow -.Ql & , -.Ql |& -or -.Ql \&; . -The exit status of a list is that of the last command executed, with the -exception of asynchronous lists, for which the exit status is 0. -.Pp -Compound commands are created using the following reserved words. -These words -are only recognized if they are unquoted and if they are used as the first -word of a command (i.e., they can't be preceded by parameter assignments or -redirections): -.Bd -literal -offset center -case else function then ! -do esac if time [[ -done fi in until { -elif for select while } -.Ed -.Pp -.Sy Note: -Some shells (but not this one) execute control structure commands in a -subshell when one or more of their file descriptors are redirected, so any -environment changes inside them may fail. -To be portable, the -.Ic exec -statement should be used instead to redirect file descriptors before the -control structure. -.Pp -In the following compound command descriptions, command lists (denoted as -.Em list ) -that are followed by reserved words must end with a semicolon, a newline or -a (syntactically correct) reserved word. -For example, -.Bd -unfilled -offset indent -.Ic { echo foo; echo bar; } -.Ic { echo foo; echo bar } -.Ic { { echo foo; echo bar; } } -.Ed -.Pp -are all valid, but -.Bd -unfilled -offset indent -.Ic { echo foo; echo bar } -.Ed -.Pp -is not. -.Bl -tag -width Ds -.It Ic \&( Ar list Ic \&) -Execute -.Ar list -in a subshell. -There is no implicit way to pass environment changes from a -subshell back to its parent. -.It Ic \&{ Ar list Ic \&} -Compound construct; -.Ar list -is executed, but not in a subshell. -Note that -.Ic \&{ -and -.Ic \&} -are reserved words, not meta-characters. -.It Xo Ic case Ar word Ic in [ -.Ns [ Ic \&( ] Ar pattern [ -.Ns Ic \&| Ar pattern ] ... Ic \&) -.Ar list Ic \&;\&; -.Ns ] Ar ... -.Ic esac -.Xc -The -.Ic case -statement attempts to match -.Ar word -against the specified -.Ar pattern Ns s ; -the -.Ar list -associated with the first successfully matched pattern is executed. -Patterns used in -.Ic case -statements are the same as those used for file name patterns except that the -restrictions regarding -.Ql \&. -and -.Ql / -are dropped. -Note that any unquoted space before and after a pattern is -stripped; any space within a pattern must be quoted. -Both the word and the -patterns are subject to parameter, command and arithmetic substitution, as -well as tilde substitution. -For historical reasons, open and close braces may be used instead of -.Ic in -and -.Ic esac -(e.g., -.Ic case $foo { *) print bar; } ) . -The exit status of a -.Ic case -statement is that of the executed -.Ar list ; -if no -.Ar list -is executed, the exit status is zero. -.It Xo Ic for Ar name No [ -.Ic in Ar word ... term Ns ] -.Ic do Ar list Ic done -.Xc -For each -.Ar word -in the specified word list, the parameter -.Ar name -is set to the word and -.Ar list -is executed. -If -.Ic in -is not used to specify a word list, the positional parameters -.Po -.Ic $1 , $2 , -etc.\& -.Pc -are used instead. -For historical reasons, open and close braces may be used instead of -.Ic do -and -.Ic done -(e.g., -.Ic for i\&; { print $i; } ) . -The exit status of a -.Ic for -statement is the last exit status of -.Ar list ; -if -.Ar list -is never executed, the exit status is zero. -.Ar term -is either a newline or a -.Ql \&; . -.It Xo Ic if Ar list Ic then -.Ar list [ Ic elif Ar list Ic then -.Ar list ] Ar ... [ Ic else -.Ar list ] Ic fi -.Xc -If the exit status of the first -.Ar list -is zero, the second -.Ar list -is executed; otherwise, the -.Ar list -following the -.Ic elif , -if any, is executed with similar consequences. -If all the lists following the -.Ic if -and -.Ic elif Ns s -fail (i.e., exit with non-zero status), the -.Ar list -following the -.Ic else -is executed. -The exit status of an -.Ic if -statement is that of non-conditional -.Ar list -that is executed; if no non-conditional -.Ar list -is executed, the exit status is zero. -.It Xo Ic select Ar name No [ -.Ic in Ar word ... term Ns ] -.Ic do Ar list Ic done -.Xc -The -.Ic select -statement provides an automatic method of presenting the user with a menu and -selecting from it. -An enumerated list of the specified -.Ar word Ns s -is printed on standard error, followed by a prompt -.Po -.Ev PS3, normally -.Dq #?\ \& -.Pc . -A number corresponding to one of the enumerated words is then read from -standard input, -.Ar name -is set to the selected word (or unset if the selection is not valid), -.Ev REPLY -is set to what was read (leading/trailing space is stripped) and -.Ar list -is executed. -If a blank line (i.e., zero or more -.Ev IFS -characters) is entered, the menu is reprinted without executing -.Ar list . -When -.Ar list -completes, the enumerated list is printed if -.Ev REPLY -is -.Dv NULL , -the prompt is printed and so on. -This process continues until an end-of-file -is read, an interrupt is received or a -.Ic break -statement is executed inside the loop. -If -.Ic in Ar word ...\& -is omitted, the positional parameters are used (i.e., -.Ic $1 , $2 , -etc.). -For historical reasons, open and close braces may be used instead of -.Ic do -and -.Ic done -(e.g., -.Ic select i; { print $i; } ) . -The exit status of a -.Ic select -statement is zero if a -.Ic break -statement is used to exit the loop, non-zero otherwise. -.It Xo Ic until Ar list Ic do Ar list -.Ic done -.Xc -This works like -.Ic while , -except that the body is executed only while the exit status of the first -.Ar list -is non-zero. -.It Xo Ic while Ar list Ic do Ar list -.Ic done -.Xc -A -.Ic while -is a pre-checked loop. -Its body is executed as often as the exit status of the first -.Ar list -is zero. -The exit status of a -.Ic while -statement is the last exit status of the -.Ar list -in the body of the loop; if the body is not executed, the exit status is zero. -.It Xo Ic function Ar name Ic \&{ -.Ar list Ic \&} -.Xc -Defines the function -.Ar name -(see -.Sx Functions -below). -Note that redirections specified after a function definition are -performed whenever the function is executed, not when the function definition -is executed. -.It Ar name Ic () Ar command -Mostly the same as -.Ic function -(see -.Sx Functions -below). -.It Xo Ic time Op Fl p -.Op Ar pipeline -.Xc -The -.Ic time -reserved word is described in the -.Sx Command execution -section. -.It Ic (( Ar expression Ic )) -The arithmetic expression -.Ar expression -is evaluated; equivalent to -.Ic let Ar expression -(see -.Sx Arithmetic expressions -and the -.Ic let -command below). -.It Ic [[ Ar expression Ic ]] -Similar to the -.Ic test -and -.Ic \&[ Ar ... Ic \&] -commands (described later), with the following exceptions: -.Bl -bullet -offset indent -.It -Field splitting and file name generation are not performed on arguments. -.It -The -.Fl a -.Pq Tn AND -and -.Fl o -.Pq Tn OR -operators are replaced with -.Ql && -and -.Ql || , -respectively. -.It -Operators (e.g., -.Sq Fl f , -.Sq = , -.Sq \&! , -etc.) must be unquoted. -.It -The second operand of the -.Sq != -and -.Sq = -expressions are patterns (e.g., the comparison -.Ic [[ foobar = f*r ]] -succeeds). -.It -There are two additional binary operators: -.Ql < -and -.Ql > -which return true if their first string operand is less than, or greater than, -their second string operand, respectively. -.It -The single argument form of -.Ic test , -which tests if the argument has a non-zero length, is not valid; explicit -operators must always be used (e.g., instead of -.Ic \&[ Ar str Ic \&] -use -.Ic \&[[ Fl n Ar str Ic \&]] ) . -.It -Parameter, command and arithmetic substitutions are performed as expressions -are evaluated and lazy expression evaluation is used for the -.Ql && -and -.Ql || -operators. -This means that in the statement -.Pp -.Dl Ic "[[ -r foo && $(: , -the sequence of characters -.Dq A:B::D -contains four fields: -.Sq A , -.Sq B , -.Sq -(an empty field) and -.Sq D . -Note that if the -.Ev IFS -parameter is set to the null -string, no field splitting is done; if the parameter is unset, the default -value of space, tab and newline is used. -.Pp -The results of substitution are, unless otherwise specified, also subject to -brace expansion and file name expansion (see the relevant sections below). -.Pp -A command substitution is replaced by the output generated by the specified -command, which is run in a subshell. -For -.Ic $( Ns Ar command Ns Ic \&) -substitutions, normal quoting rules are used when -.Ar command -is parsed; however, for the -.Ic ` Ns Ar command Ns Ic ` -form, a -.Ql \e -followed by any of -.Ql $ , -.Ql ` -or -.Ql \e -is stripped (a -.Ql \e -followed by any other character is unchanged). -As a special case in command substitutions, a command of the form -.Ic \&< Ar file -is interpreted to mean substitute the contents of -.Ar file -(note that -.Ic $(< foo) -has the same effect as -.Ic $(cat foo) , -but it is carried out more efficiently because no process is started). -.Pp -.Sy Note: -.Ic $( Ns Ar command Ns Ic \&) -expressions are currently parsed by finding the matching parenthesis, -regardless of quoting. -This should be fixed soon. -.Pp -Arithmetic substitutions are replaced by the value of the specified expression. -For example, the command -.Ic print $((2+3*4)) -displays 14. -See -.Sx Arithmetic expressions -for a description of an expression. -.Ss Parameters -Parameters are shell variables; they can be assigned values and their values -can be accessed using a parameter substitution. -A parameter name is either one -of the special single punctuation or digit character parameters described -below or a letter followed by zero or more letters or digits -.Po -.Ql _ -counts as a letter -.Pc . -The latter form can be treated as arrays by appending an array index of the -form -.Op Ar expr -where -.Ar expr -is an arithmetic expression. -Array indices are currently limited to the range 0 through 2147483647 (for -.Nm mksh ) -or 0 to 1023 (for other korn shells), inclusive. -Parameter substitutions take the form -.Ic $ Ns Ar name , -.Ic ${ Ns Ar name Ns Ic \&} -or -.Sm off -.Xo -.Ic ${ Ar name Oo Ar expr Oc -.Ic \&} , -.Xc -.Sm on -where -.Ar name -is a parameter name. -If substitution is performed on a parameter -(or an array parameter element) -that is not set, a null string is substituted unless the -.Ic nounset -option -.Po -.Ic set Fl o Ic nounset -or -.Ic set Fl u -.Pc -is set, in which case an error occurs. -.Pp -Parameters can be assigned values in a number of ways. -First, the shell implicitly sets some parameters like -.Ic # , PWD , -etc.; this is the only way the special single character parameters are set. -Second, parameters are imported from the shell's environment at startup. -Third, parameters can be assigned values on the command line, for example, -.Ic FOO=bar -sets the parameter -.Ev FOO -to -.Dq bar ; -multiple parameter assignments can be given on a single command line and they -can be followed by a simple-command, in which case the assignments are in -effect only for the duration of the command (such assignments are also -exported, see below for implications of this). -Note that both the parameter name and the -.Ql = -must be unquoted for the shell to recognize a parameter assignment. -The fourth way of setting a parameter is with the -.Ic export , -.Ic readonly -and -.Ic typeset -commands; see their descriptions in the -.Sx Command execution -section. -Fifth, -.Ic for -and -.Ic select -loops set parameters as well as the -.Ic getopts , -.Ic read -and -.Ic set Fl A -commands. -Lastly, parameters can be assigned values using assignment operators -inside arithmetic expressions (see -.Sx Arithmetic expressions -below) or using the -.Xo Ic ${ Ns Ar name Ns = -.Ns Ar value Ns Ic \&} -.Xc -form of the parameter substitution (see below). -.Pp -Parameters with the export attribute (set using the -.Ic export -or -.Ic typeset Fl x -commands or by parameter assignments followed by simple commands) are put in -the environment (see -.Xr environ 7 ) -of commands run by the shell as -.Ar name Ns = Ns Ar value -pairs. -The order in which parameters appear in the environment of a command is -unspecified. -When the shell starts up, it extracts parameters and their values -from its environment and automatically sets the export attribute for those -parameters. -.Pp -Modifiers can be applied to the -.Ic ${ Ns Ar name Ns Ic \&} -form of parameter substitution: -.Bl -tag -width Ds -.It Xo Ic ${ Ns Ar name Ns -.Ic \&:\&- Ns Ar word Ns Ic \&} -.Xc -If -.Ar name -is set and not -.Dv NULL , -it is substituted; otherwise, -.Ar word -is substituted. -.It Xo Ic ${ Ns Ar name Ns -.Ic \&:\&+ Ns Ar word Ns Ic \&} -.Xc -If -.Ar name -is set and not -.Dv NULL , -.Ar word -is substituted; otherwise, nothing is substituted. -.It Xo Ic ${ Ns Ar name Ns -.Ic \&:\&= Ns Ar word Ns Ic \&} -.Xc -If -.Ar name -is set and not -.Dv NULL , -it is substituted; otherwise, it is assigned -.Ar word -and the resulting value of -.Ar name -is substituted. -.It Xo Ic ${ Ns Ar name Ns -.Ic \&:\&? Ns Ar word Ns Ic \&} -.Xc -If -.Ar name -is set and not -.Dv NULL , -it is substituted; otherwise, -.Ar word -is printed on standard error (preceded by -.Ar name Ns \&: ) -and an error occurs (normally causing termination of a shell script, function -or .-script). -If word is omitted the string -.Dq parameter null or not set -is used instead. -.El -.Pp -In the above modifiers, the -.Ql \&: -can be omitted, in which case the conditions only depend on -.Ar name -being set (as opposed to set and not -.Dv NULL ) . -If -.Ar word -is needed, parameter, command, arithmetic and tilde substitution are performed -on it; if -.Ar word -is not needed, it is not evaluated. -.Pp -The following forms of parameter substitution can also be used: -.Bl -tag -width Ds -.It Ic ${# Ns Ar name Ns Ic \&} -The number of positional parameters if -.Ar name -is -.Ql * , -.Ql @ , -not specified, or the length of the string value of parameter -.Ar name . -.It Xo Ic ${# Ns Ar name Ns -.Ic [*\&]} , ${# Ns Ar name Ns Ic [@\&]} -.Xc -The number of elements in the array -.Ar name . -.Sm off -.It Xo -.Ic ${ Ar name Ic # Ar pattern -.Sm on -.Ic } , -.Sm off -.Ic ${ Ar name Ic ## Ar pattern Ic \&} -.Xc -.Sm on -If -.Ar pattern -matches the beginning of the value of parameter -.Ar name , -the matched text is deleted from the result of substitution. -A single -.Ql # -results in the shortest match, two of them result in the longest match. -.Sm off -.It Xo -.Ic ${ Ar name Ic % Ar pattern -.Sm on -.Ic } , -.Sm off -.Ic ${ Ar name Ic %% Ar pattern Ic } -.Xc -.Sm on -Like -.Ic ${..#..} -substitution, but it deletes from the end of the value. -.El -.Pp -The following special parameters are implicitly set by the shell and cannot be -set directly using assignments: -.Bl -tag -width "1 ... 9" -.It Ev \&! -Process ID of the last background process started. -If no background processes have been started, the parameter is not set. -.It Ev \&# -The number of positional parameters (i.e., -.Ic $1 , $2 , -etc.). -.It Ev \&$ -The process ID of the shell, or the -.Tn PID -of the original shell if it is a subshell. -Do -.Em NOT -use this mechanism for generating temporary file names; see -.Xr mktemp 1 -instead. -.It Ev \&- -The concatenation of the current single letter options (see the -.Ic set -command below for a list of options). -.It Ev \&? -The exit status of the last non-asynchronous command executed. -If the last command was killed by a signal, -.Va \&$?\& -is set to 128 plus the signal number. -.It Ev 0 -The name the shell was invoked with (i.e., -.Li argv[0] ) -or the -.Ar command-name -if it was invoked with the -.Fl c -option and the -.Ar command-name -was supplied, or the -.Ar file -argument, if it was supplied. -If the -.Ic posix -option is not set, -.Ic \&$0 -is the name of the current function or script. -.It Ev 1 ... Ev 9 -The first nine positional parameters that were supplied to the shell, function -or .-script. -Further positional parameters may be accessed using -.Ic ${ Ns Ar number Ns Ic \&} . -.It Ev \&* -All positional parameters (except parameter 0); i.e., -.Ic $1 , $2 , $3 , -\&... -If used -outside of double quotes, parameters are separate words (which are subjected -to word splitting); if used within double quotes, parameters are separated -by the first character of the -.Ev IFS -parameter (or the empty string if -.Ev IFS -is -.Dv NULL ) . -.It Ev \&@ -Same as -.Ic \&$\&* , -unless it is used inside double quotes, in which case a separate word is -generated for each positional parameter. -If there are no positional parameters, no word is generated. -.Ic \&$\&@ -can be used to access arguments, verbatim, without losing -.Dv NULL -arguments or splitting arguments with spaces. -.El -.Pp -The following parameters are set and/or used by the shell: -.Bl -tag -width "EXECSHELL" -.It Ev \&_ No (underscore) -When an external command is executed by the shell, this parameter is set in the -environment of the new process to the path of the executed command. -In interactive use, this parameter is also set in the parent shell to the last -word of the previous command. -.It Ev CDPATH -Search path for the -.Ic cd -built-in command. -Works the same way as -.Ev PATH -for those directories not beginning with -.Ql / -in -.Ic cd -commands. -Note that if -.Ev CDPATH -is set and does not contain -.Dq \&. -or contains an empty path, the current directory is not searched. -Also, the -.Ic cd -built-in command will display the resulting directory when a match is found -in any search path other than the empty path. -.It Ev COLUMNS -Set to the number of columns on the terminal or window. -Currently set to the -.Dq cols -value as reported by -.Xr stty 1 -if that value is non-zero. -This parameter is used by the -interactive line editing modes and by the -.Ic select , -.Ic set Fl o -and -.Ic kill Fl l -commands to format information columns. -.It Ev EDITOR -If the -.Ev VISUAL -parameter is not set, this parameter controls the command-line editing mode for -interactive shells. -See -.Ev VISUAL -parameter below for how this works. -.It Ev ENV -If this parameter is found to be set after any profile files are executed, the -expanded value is used as a shell startup file. -It typically contains function and alias definitions. -.It Ev ERRNO -Integer value of the shell's -.Va errno -variable. -It indicates the reason the last system call failed. -Not yet implemented. -.It Ev EXECSHELL -If set, this parameter is assumed to contain the shell that is to be used to -execute commands that -.Xr execve 2 -fails to execute and which do not start with a -.Dq \&#\&! Ns Ar shell -sequence. -.It Ev FCEDIT -The editor used by the -.Ic fc -command (see below). -.It Ev FPATH -Like -.Ev PATH , -but used when an undefined function is executed to locate the file defining the -function. -It is also searched when a command can't be found using -.Ev PATH . -See -.Sx Functions -below for more information. -.It Ev HISTFILE -The name of the file used to store command history. -When assigned to, history is loaded from the specified file. -Also, several invocations of the shell -running on the same machine will share history if their -.Ev HISTFILE -parameters all point to the same file. -.Pp -.Sy Note: -If -.Ev HISTFILE -isn't set, no history file is used. -This is different from the original Korn shell. -.It Ev HISTSIZE -The number of commands normally stored for history. -The default is 511. -.It Ev HOME -The default directory for the -.Ic cd -command and the value substituted for an unqualified -.Ic ~ -(see -.Sx Tilde expansion -below). -.It Ev IFS -Internal field separator, used during substitution and by the -.Ic read -command, to split values into distinct arguments; normally set to space, tab -and newline. -See -.Sx Substitution -above for details. -.Pp -.Sy Note: -This parameter is not imported from the environment when the shell is -started. -.It Ev KSH_VERSION -The version of -.Nm -(read-only). -See also the version commands in -.Sx Emacs editing mode -and -.Sx Vi editing mode -sections, below. -.It Ev LINENO -The line number of the function or shell script that is currently being -executed. -.It Ev LINES -Set to the number of lines on the terminal or window. -Not yet implemented. -.It Ev OLDPWD -The previous working directory. -Unset if -.Ic cd -has not successfully changed directories since the shell started or the -shell doesn't know where it is. -.It Ev OPTARG -When using -.Ic getopts , -it contains the argument for a parsed option, if it requires one. -.It Ev OPTIND -The index of the last argument processed when using -.Ic getopts . -Assigning 1 to this parameter causes -.Ic getopts -to process arguments from the beginning the next time it is invoked. -.It Ev PATH -A colon separated list of directories that are searched when looking for -commands and .'d files. -An empty string resulting from a leading or trailing -colon, or two adjacent colons, is treated as a -.Dq \&. , -the current directory. -This is dangerous. -.It Ev PGRP -The current process group, see -.Xr getpgrp 2 . -.It Ev POSIXLY_CORRECT -If set, this parameter causes the -.Ic posix -option to be enabled. -See -.Sx POSIX mode -below. -.It Ev PPID -The process ID of the shell's parent (read-only). -.It Ev PS1 -The primary prompt for interactive shells. -Parameter, command and arithmetic substitutions are performed, and -.Ql \&! -is replaced with the current command number (see the -.Ic fc -command below). -A literal -.Ql \&! -can be put in the prompt by placing -.Ql !! -in -.Ev PS1 . -Note that since the command-line editors try to figure out how long the prompt -is (so they know how far it is to the edge of the screen), escape codes in -the prompt tend to mess things up. -You can tell the shell not to count certain -sequences (such as escape codes) by prefixing your prompt with a non-printing -character (such as control-A) followed by a carriage return and then delimiting -the escape codes with this non-printing character. -If you don't have any non-printing characters, you're out of luck. -By the way, don't blame me for -this hack; it's in the original -.Xr ksh88 1 . -Default is -.Dq \&$\ \& -for non-root users, -.Dq \&#\ \& -for root. -.Pp -Since Backslashes and other special characters may be -interpreted by the shell, to set -.Ev PS1 -either escape the backslash itself or use double quotes. -The latter is more practical. -This is a more complex example which embeds the current working -directory, in reverse video, into the prompt string, avoiding to -directly enter special characters (for example with -.Ic ^^ -in the emacs editing mode): -.Bd -literal -offset indent -x=$(print \e\e001) -PS1="$x$(print \e\er)$x$(tput so)$x\e$PWD$x$(tput se)$x> " -.Ed -.It Ev PS2 -Secondary prompt string, by default -.Dq \&>\ \& , -used when more input is needed to complete a command. -.It Ev PS3 -Prompt used by the -.Ic select -statement when reading a menu selection. -Default is -.Dq \&#\&?\ \& . -.It Ev PS4 -Used to prefix commands that are printed during execution tracing (see the -.Ic set Fl x -command below). -Parameter, command and arithmetic substitutions are performed -before it is printed. -Default is -.Dq \&+\ \& . -.It Ev PWD -The current working directory. -May be unset or -.Dv NULL -if the shell doesn't know where it is. -.It Ev RANDOM -A pseudo-random number generator. -Every time -.Ev RANDOM -is referenced, it is assigned a random number in the range -0\-32767. -Until the variable is written to, the -.Xr arc4random 3 -function is being used, after a write or if the function is not available, -.Xr random 3 -or, if that does not exist, -.Xr rand 3 , -is being used. -On startup and fork, the value is seeded and the initial state of -not being written to initialised. -If a feedback function is provided, changed values are propagated -back to the arcfour random number generator. -.It Ev REPLY -Default parameter for the -.Ic read -command if no names are given. -Also used in -.Ic select -loops to store the value that is read from standard input. -.It Ev SECONDS -The number of seconds since the shell started or, if the parameter has been -assigned an integer value, the number of seconds since the assignment plus the -value that was assigned. -.It Ev TMOUT -If set to a positive integer in an interactive shell, it specifies the maximum -number of seconds the shell will wait for input after printing the primary -prompt -.Pq Ev PS1 . -If the time is exceeded, the shell exits. -.It Ev TMPDIR -The directory shell temporary files are created in. -If this parameter is not -set or does not contain the absolute path of a writable directory, temporary -files are created in -.Pa /tmp . -.It Ev VISUAL -If set, this parameter controls the command-line editing mode for interactive -shells. -If the last component of the path specified in this parameter contains -the string -.Dq vi , -.Dq emacs -or -.Dq gmacs , -the -.Xr vi , -.Xr emacs -or -.Xr gmacs -(Gosling emacs) editing mode is enabled, respectively. -.El -.Ss Tilde expansion -Tilde expansion, which is done in parallel with parameter substitution, is done -on words starting with an unquoted -.Ql ~ . -The characters following the tilde, up to the first -.Ql / , -if any, are assumed to be a login name. -If the login name is empty, -.Ql + -or -.Ql - , -the value of the -.Ev HOME , -.Ev PWD -or -.Ev OLDPWD -parameter is substituted, respectively. -Otherwise, the password file is -searched for the login name, and the tilde expression is substituted with the -user's home directory. -If the login name is not found in the password file or -if any quoting or parameter substitution occurs in the login name, no -substitution is performed. -.Pp -In parameter assignments (those preceding a simple-command or those occurring -in the arguments of -.Ic alias , -.Ic export , -.Ic readonly -and -.Ic typeset ) , -tilde expansion is done after any unquoted colon -.Pq Sq \&: , -and login names are also delimited by colons. -.Pp -The home directory of previously expanded login names are cached and re-used. -The -.Ic alias -d -command may be used to list, change and add to this cache (e.g., -.Ic alias -d fac=/usr/local/facilities; cd ~fac/bin ) . -.Ss Brace expansion (alteration) -Brace expressions, which take the form -.Bd -unfilled -offset indent -.Sm off -.Xo Ar prefix Ic { Ar str No 1,..., -.Ar str No N Ic } Ar suffix -.Xc -.Sm on -.Ed -.Pp -are expanded to N words, each of which is the concatenation of -.Ar prefix , -.Ar str Ns i -and -.Ar suffix -(e.g., -.Dq a{c,b{X,Y},d}e -expands to four words: -.Dq ace , -.Dq abXe , -.Dq abYe -and -.Dq ade ) . -As noted in the example, brace expressions can be nested and the resulting -words are not sorted. -Brace expressions must contain an unquoted comma -.Pq Sq \&, -for expansion to occur (i.e., -.Ic {} -and -.Ic {foo} -are not expanded). -Brace expansion is carried out after parameter substitution -and before file name generation. -.Ss File name patterns -A file name pattern is a word containing one or more unquoted -.Ql \&? -or -.Ql * -characters or -.Dq [..] -sequences. -Once brace expansion has been performed, the shell replaces file -name patterns with the sorted names of all the files that match the pattern -(if no files match, the word is left unchanged). -The pattern elements have the following meaning: -.Bl -tag -width Ds -.It Ic \&? -Matches any single character. -.It Ic \&* -Matches any sequence of characters. -.It Ic \&[ Ns .. Ns Ic \&] -Matches any of the characters inside the brackets. -Ranges of characters can be -specified by separating two characters by a -.Ql - -(e.g., -.Dq [a0-9] -matches the letter -.Dq a -or any digit). -In order to represent itself, a -.Ql - -must either be quoted or the first or last character in the character list. -Similarly, a -.Ql \&] -must be quoted or the first character in the list if it is to represent itself -instead of the end of the list. -Also, a -.Ql \&! -appearing at the start of the list has special meaning (see below), so to -represent itself it must be quoted or appear later in the list. -.It Ic \&[\&! Ns .. Ns Ic \&] -Like -.Ic \&[ Ns .. Ns Ic \&] , -except it matches any character not inside the brackets. -.Sm off -.It Xo Ic \&*( Ar pattern Ic \&| No \ ...\ \& -.Ic \&| Ar pattern Ic \&) -.Xc -.Sm on -Matches any string of characters that matches zero or more occurrences of the -specified patterns. -Example: The pattern -.Ic \&*(foo\&|bar) -matches the strings -.Dq , -.Dq foo , -.Dq bar , -.Dq foobarfoo , -etc. -.Sm off -.It Xo Ic \&+( Ar pattern Ic \&| No \ ...\ \& -.Ic \&| Ar pattern Ic \&) -.Xc -.Sm on -Matches any string of characters that matches one or more occurrences of the -specified patterns. -Example: The pattern -.Ic \&+(foo\&|bar) -matches the strings -.Dq foo , -.Dq bar , -.Dq foobar , -etc. -.Sm off -.It Xo Ic \&?( Ar pattern Ic \&| No \ ...\ \& -.Ic \&| Ar pattern Ic \&) -.Xc -.Sm on -Matches the empty string or a string that matches one of the specified -patterns. -Example: The pattern -.Ic \&?(foo\&|bar) -only matches the strings -.Dq , -.Dq foo -and -.Dq bar . -.Sm off -.It Xo Ic \&@( Ar pattern Ic \&| No \ ...\ \& -.Ic \&| Ar pattern Ic \&) -.Xc -.Sm on -Matches a string that matches one of the specified patterns. -Example: The pattern -.Ic \&@(foo\&|bar) -only matches the strings -.Dq foo -and -.Dq bar . -.Sm off -.It Xo Ic \&!( Ar pattern Ic \&| No \ ...\ \& -.Ic \&| Ar pattern Ic \&) -.Xc -.Sm on -Matches any string that does not match one of the specified patterns. -Examples: The pattern -.Ic \&!(foo\&|bar) -matches all strings except -.Dq foo -and -.Dq bar ; -the pattern -.Ic \&!(\&*) -matches no strings; the pattern -.Ic \&!(\&?)\&* -matches all strings (think about it). -.El -.Pp -Note that -.Nm -currently never matches -.Dq \&. -and -.Dq \&.\&. , -but the original -.Xr ksh , -Bourne -.Xr sh -and GNU -.Xr bash -do. -.Pp -Note that none of the above pattern elements match either a period -.Pq Sq \&. -at the start of a file name or a slash -.Pq Sq / , -even if they are explicitly used in a -.Ic \&[ Ns .. Ns Ic \&] -sequence; also, the names -.Dq \&. -and -.Dq \&.\&. -are never matched, even by the pattern -.Dq \&.\&* . -.Pp -If the -.Ic markdirs -option is set, any directories that result from file name generation are marked -with a trailing -.Ql / . -.Pp -The -.Tn POSIX -character classes (i.e., -.Ic \&[\&: Ns Ar class-name Ns Ic \&:\&] -inside a -.Ic \&[ Ns .. Ns Ic \&] -expression) are not yet implemented. -.Ss Input/output redirection -When a command is executed, its standard input, standard output and standard -error (file descriptors 0, 1 and 2, respectively) are normally inherited from -the shell. -Three exceptions to this are commands in pipelines, for which -standard input and/or standard output are those set up by the pipeline, -asynchronous commands created when job control is disabled, for which standard -input is initially set to be from -.Pa /dev/null , -and commands for which any of the following redirections have been specified: -.Bl -tag -width Ds -.It Ic \&> Ar file -Standard output is redirected to -.Ar file . -If -.Ar file -does not exist, it is created; if it does exist, is a regular file and the -.Ic noclobber -option is set, an error occurs; otherwise, the file is truncated. -Note that this means the command -.Ic cmd < foo > foo -will open -.Ar foo -for reading and then truncate it when it opens it for writing, before -.Ar cmd -gets a chance to actually read -.Ar foo . -.It Ic \&>\&| Ar file -Same as -.Ic \&> , -except the file is truncated, even if the -.Ic noclobber -option is set. -.It Ic \&>\&> Ar file -Same as -.Ic \&> , -except if -.Ar file -exists it is appended to instead of being truncated. -Also, the file is opened -in append mode, so writes always go to the end of the file (see -.Xr open 2 ) . -.It Ic \&< Ar file -Standard input is redirected from -.Ar file , -which is opened for reading. -.It Ic \&<\&> Ar file -Same as -.Ic \&< , -except the file is opened for reading and writing. -.It Ic \&<\&< Ar marker -After reading the command line containing this kind of redirection (called a -.Dq here document ) , -the shell copies lines from the command source into a temporary file until a -line matching -.Ar marker -is read. -When the command is executed, standard input is redirected from the -temporary file. -If -.Ar marker -contains no quoted characters, the contents of the temporary file are processed -as if enclosed in double quotes each time the command is executed, so -parameter, command and arithmetic substitutions are performed, along with -backslash -.Pq Sq \e -escapes for -.Ql $ , -.Ql ` , -.Ql \e -and -.Ql \enewline . -If multiple here documents are used on the same command line, they are saved in -order. -.It Ic \&<\&<\&- Ar marker -Same as -.Ic \&<\&< , -except leading tabs are stripped from lines in the here document. -.It Ic \&<\&& Ar fd -Standard input is duplicated from file descriptor -.Ar fd . -.Ar fd -can be a single digit, indicating the number of an existing file descriptor; -the letter -.Ql p , -indicating the file descriptor associated with the output of the current -co-process; or the character -.Ql - , -indicating standard input is to be closed. -.It Ic \&>\&& Ar fd -Same as -.Ic \&<\&& , -except the operation is done on standard output. -.El -.Pp -In any of the above redirections, the file descriptor that is redirected (i.e., -standard input or standard output) can be explicitly given by preceding the -redirection with a single digit. -Parameter, command and arithmetic -substitutions, tilde substitutions and, if the shell is interactive, -file name generation are all performed on the -.Ar file , -.Ar marker -and -.Ar fd -arguments of redirections. -Note, however, that the results of any file name -generation are only used if a single file is matched; if multiple files match, -the word with the expanded file name generation characters is used. -Note -that in restricted shells, redirections which can create files cannot be used. -.Pp -For simple-commands, redirections may appear anywhere in the command; for -compound-commands -.Po -.Ic if -statements, etc. -.Pc , -any redirections must appear at the end. -Redirections are processed after -pipelines are created and in the order they are given, so -.Pp -.Dl Ic cat /foo/bar 2\*(Gt&1 \*(Gt /dev/null \&| cat -n -.Pp -will print an error with a line number prepended to it. -.Ss Arithmetic expressions -Integer arithmetic expressions can be used with the -.Ic let -command, inside -.Ic $(( Ns .. Ns Ic )) -expressions, inside array references (e.g., -.Sm off -.Ar name Ic \&[ Ar expr Ic \&] ) , -.Sm on -as numeric arguments to the -.Ic test -command and as the value of an assignment to an integer parameter. -.Pp -Expressions may contain alpha-numeric parameter identifiers, array references -and integer constants and may be combined with the following C operators -(listed and grouped in increasing order of precedence): -.Pp -Unary operators: -.Bl -item -offset indent -compact -.It -.Ic \&+ \&- \&! \&~ \&+\&+ \&-\&- -.El -.Pp -Binary operators: -.Bl -item -offset indent -compact -.It -.Ic \&, -.It -.Ic = \&*= /= %= \&+= \&-= \&<\&<= -.Ic \&>\&>= \&&= ^= \&|= -.It -.Ic \&|\&| -.It -.Ic \&&\&& -.It -.Ic \&| -.It -.Ic ^ -.It -.Ic \&& -.It -.Ic == \&!= -.It -.Ic \&< \&<= \&>= \&> -.It -.Ic \&<\&< \&>\&> -.It -.Ic \&+ \&- -.It -.Ic \&* / % -.El -.Pp -Ternary operators: -.Bl -item -offset indent -compact -.It -.Ic \&?\&: -(precedence is immediately higher than assignment) -.El -.Pp -Grouping operators: -.Bl -item -offset indent -compact -.It -.Ic \&( \&) -.El -.Pp -Integer constants may be specified with arbitrary bases using the notation -.Ar base Ns Ic \&# Ns Ar number , -where -.Ar base -is a decimal integer specifying the base and -.Ar number -is a number in the specified base. -.Pp -The operators are evaluated as follows: -.Bl -tag -width Ds -offset indent -.It unary Ic \&+ -Result is the argument (included for completeness). -.It unary Ic \&- -Negation. -.It Ic \&! -Logical -.Tn NOT ; -the result is 1 if argument is zero, 0 if not. -.It Ic \&~ -Arithmetic (bit-wise) -.Tn NOT . -.It Ic \&+\&+ -Increment; must be applied to a parameter (not a literal or other expression). -The parameter is incremented by 1. -When used as a prefix operator, the result -is the incremented value of the parameter; when used as a postfix operator, the -result is the original value of the parameter. -.It Ic \&-\&- -Similar to -.Ic \&+\&+ , -except the parameter is decremented by 1. -.It Ic \&, -Separates two arithmetic expressions; the left-hand side is evaluated first, -then the right. -The result is the value of the expression on the right-hand side. -.It Ic = -Assignment; variable on the left is set to the value on the right. -.It Xo Ic \&*= /= \&+= \&-= \&<\&<= -.Ic \&>\&>= \&&= ^= \&|= -.Xc -Assignment operators. -.Ao Ar var Ac -.Ao Ar op Ac = -.Ao Ar expr Ac -is the same as -.Ao Ar var Ac = -.Ao Ar var Ac -.Ao Ar op Ac -.Ic \&( -.Ao Ar expr Ac -.Ic \&) . -.It Ic \&|\&| -Logical -.Tn OR ; -the result is 1 if either argument is non-zero, 0 if not. -The right argument is evaluated only if the left argument is zero. -.It Ic \&&\&& -Logical -.Tn AND ; -the result is 1 if both arguments are non-zero, 0 if not. -The right argument is evaluated only if the left argument is non-zero. -.It Ic \&| -Arithmetic (bit-wise) -.Tn OR . -.It Ic ^ -Arithmetic (bit-wise) -.Tn XOR -(exclusive-OR). -.It Ic \&& -Arithmetic (bit-wise) -.Tn AND . -.It Ic == -Equal; the result is 1 if both arguments are equal, 0 if not. -.It Ic \&!= -Not equal; the result is 0 if both arguments are equal, 1 if not. -.It Ic \&< -Less than; the result is 1 if the left argument is less than the right, 0 if -not. -.It Ic \&<= \&>= \&> -Less than or equal, greater than or equal, greater than. -See -.Ic \&< . -.It Ic \&<\&< \&>\&> -Shift left (right); the result is the left argument with its bits shifted left -(right) by the amount given in the right argument. -.It Ic \&+ \&- \&* / -Addition, subtraction, multiplication and division. -.It Ic % -Remainder; the result is the remainder of the division of the left argument by -the right. -The sign of the result is unspecified if either argument is negative. -.It Xo Ao Ar arg1 Ac Ic \ \&? -.Ao Ar arg2 Ac Ic \ \&: Ao Ar arg3 Ac -.Xc -.No If Ao Ar arg1 Ac -is non-zero, the result is -.Ao Ar arg2 Ac , -otherwise -.Ao Ar arg3 Ac . -.El -.Ss Co-processes -A co-process, which is a pipeline created with the -.Ic \&|\&& -operator, is an asynchronous process that the shell can both write to (using -.Ic print -p ) -and read from (using -.Ic read -p ) . -The input and output of the co-process can also be manipulated using -.Ic \&>\&&p -and -.Ic \&<\&&p -redirections, respectively. -Once a co-process has been started, another can't -be started until the co-process exits or the co-process's input has been -redirected using an -.Ic exec Ar n Ns Ic \&>\&&p -redirection. -If a co-process's input is redirected in this way, the next -co-process to be started will share the output with the first co-process, -unless the output of the initial co-process has been redirected using an -.Ic exec Ar n Ns Ic \&<\&&p -redirection. -.Pp -Some notes concerning co-processes: -.Bl -bullet -.It -The only way to close the co-process's input (so the co-process reads an -end-of-file) is to redirect the input to a numbered file descriptor and then -close that file descriptor (e.g., -.Ic exec 3\&>\&&p\&; exec 3\&>\&&\&- ) . -.It -In order for co-processes to share a common output, the shell must keep the -write portion of the output pipe open. -This means that end-of-file will not be -detected until all co-processes sharing the co-process's output have exited -(when they all exit, the shell closes its copy of the pipe). -This can be -avoided by redirecting the output to a numbered file descriptor (as this also -causes the shell to close its copy). -Note that this behaviour is slightly -different from the original Korn shell which closes its copy of the write -portion of the co-process output when the most recently started co-process -(instead of when all sharing co-processes) exits. -.It -.Ic print -p -will ignore -.Dv SIGPIPE -signals during writes if the signal is not being trapped or ignored; the same -is true if the co-process input has been duplicated to another file descriptor -and -.Ic print -u Ns Ar n -is used. -.El -.Ss Functions -Functions are defined using either Korn shell -.Ic function Ar name -syntax or the Bourne/POSIX shell -.Fn name -syntax (see below for the difference between the two forms). -Functions are like -.Li .-scripts -in that they are executed in the current environment. -However, unlike -.Li .-scripts , -shell arguments (i.e., positional parameters -.Ic $1 , $2 , -etc.) are never visible inside them. -When the shell is determining the location of a command, functions -are searched after special built-in commands, before regular and -non-regular built-ins and before the -.Ev PATH -is searched. -.Pp -An existing function may be deleted using -.Ic unset Fl f Ar function-name . -A list of functions can be obtained using -.Ic typeset \&+f -and the function definitions can be listed using -.Ic typeset \&-f . -The -.Ic autoload -command (which is an alias for -.Ic typeset \&-fu ) -may be used to create undefined functions; when an undefined function is -executed, the shell searches the path specified in the -.Ev FPATH -parameter for a file with the same name as the function, which, if found, is -read and executed. -If after executing the file the named function is found to -be defined, the function is executed; otherwise, the normal command search is -continued (i.e., the shell searches the regular built-in command table and -.Ev PATH ) . -Note that if a command is not found using -.Ev PATH , -an attempt is made to autoload a function using -.Ev FPATH -(this is an undocumented feature of the original Korn shell). -.Pp -Functions can have two attributes, -.Dq trace -and -.Dq export , -which can be set with -.Ic typeset \&-ft -and -.Ic typeset \&-fx , -respectively. -When a traced function is executed, the shell's -.Ic xtrace -option is turned on for the function's duration; otherwise, the -.Ic xtrace -option is turned off. -The -.Dq export -attribute of functions is currently not used. -In the original Korn shell, -exported functions are visible to shell scripts that are executed. -.Pp -Since functions are executed in the current shell environment, parameter -assignments made inside functions are visible after the function completes. -If this is not the desired effect, the -.Ic typeset -command can be used inside a function to create a local parameter. -Note that special parameters (e.g. -.Ic \&$$ , $\&! ) -can't be scoped in this way. -.Pp -The exit status of a function is that of the last command executed in the -function. -A function can be made to finish immediately using the -.Ic return -command; this may also be used to explicitly specify the exit status. -.Pp -Functions defined with the -.Ic function -reserved word are treated differently in the following ways from functions -defined with the -.Ic \&(\&) -notation: -.Bl -bullet -.It -The -.Ic $0 -parameter is set to the name of the function (Bourne-style functions leave -.Ic $0 -untouched). -.It -Parameter assignments preceding function calls are not kept in the shell -environment (executing Bourne-style functions will keep assignments). -.It -.Ev OPTIND -is saved/reset and restored on entry and exit from the function so -.Ic getopts -can be used properly both inside and outside the function (Bourne-style -functions leave -.Dv OPTIND -untouched, so using -.Ic getopts -inside a function interferes with using -.Ic getopts -outside the function). -In the future, the following differences will also be added: -.Bl -bullet -offset indent -.It -A separate trap/signal environment will be used during the execution of -functions. -This will mean that traps set inside a function will not affect the -shell's traps and signals that are not ignored in the shell (but may be -trapped) will have their default effect in a function. -.It -The EXIT trap, if set in a function, will be executed after the function -returns. -.El -.El -.Ss POSIX mode -The shell is intended to be -.Tn POSIX -compliant; however, in some cases, -.Tn POSIX -behaviour is contrary either to the original Korn shell behaviour or to user -convenience. -How the shell behaves in these cases is determined by the state of the -.Ic posix -option -.Pq Ic set Fl o Ic posix . -If it is on, the -.Tn POSIX -behaviour is followed; otherwise, it is not. -The -.Ic posix -option is set automatically when the shell starts up if the environment -contains the -.Dv POSIXLY_CORRECT -parameter. -.Pp -The following is a list of things that are affected by the state of the -.Ic posix -option: -.Bl -bullet -Reading of -.Ev $ENV . -If not in -.Ic posix -mode, the -.Ev ENV -parameter is not expanded and included when the shell starts. -.It -Occurrences of -.Ic \e\&" -inside double quoted -.Ic `\&.\&.` -command substitutions. -In -.Tn POSIX -mode, the -.Ic \e\&" -is interpreted when the command is interpreted; in -.Pf non- Tn POSIX -mode, the -backslash is stripped before the command substitution is interpreted. -For example, -.Ic echo \&"`echo \e\&"hi\e\&"`\&" -produces -.Dq \&"hi\&" -in -.Tn POSIX -mode, -.Dq hi -in -.Pf non- Tn POSIX -mode. -To avoid problems, use the -.Ic $(...)\& -form of command substitution. -.It -.Ic kill -l -output. -In -.Tn POSIX -mode, signal names are listed one per line; in -.Pf non- Tn POSIX -mode, -signal numbers, names and descriptions are printed in columns. -In the future, a new option -.Pq Fl v No perhaps -will be added to distinguish the two behaviours. -.It -.Ic fg -exit status. -In -.Tn POSIX -mode, the exit status is 0 if no errors occur; in -.Pf non- Tn POSIX -mode, the exit status is that of the last foregrounded job. -.It -.Ic eval -exit status. -If -.Ic eval -gets to see an empty command (i.e., -.Ic eval "`false`" ) , -its exit status in -.Tn POSIX -mode will be 0. -In -.Pf non- Tn POSIX -mode, it will be the exit status of the last command substitution that was -done in the processing of the arguments to -.Ic eval -(or 0 if there were no command substitutions). -.It -.Ic getopts . -In -.Tn POSIX -mode, options must start with a -.Ql - ; -in -.Pf non- Tn POSIX -mode, options can start with either -.Ql - -or -.Ql + . -.It -Brace expansion (also known as alternation). -In -.Tn POSIX -mode, brace expansion is -disabled; in -.Pf non- Tn POSIX -mode, brace expansion is enabled. -Note that -.Ic set Fl o Ic posix -(or setting the -.Ev POSIXLY_CORRECT -parameter) automatically turns the -.Ic braceexpand -option off; however, it can be explicitly turned on later. -.It -.Ic set \&- . -In -.Tn POSIX -mode, this does not clear the -.Ic verbose -or -.Ic xtrace -options; in -.Pf non- Tn POSIX -mode, it does. -.It -.Ic set -exit status. -In -.Tn POSIX -mode, the exit status of -.Ic set -is 0 if there are no errors; in -.Pf non- Tn POSIX -mode, the exit status is that of any -command substitutions performed in generating the -.Ic set -command. -For example, -.Ic set \&-\&- `false`; echo $?\& -prints 0 in -.Tn POSIX -mode, 1 in -.Pf non- Tn POSIX -mode. -This construct is used in most shell scripts that use the old -.Xr getopt 1 -command. -.It -Argument expansion of the -.Ic alias , -.Ic export , -.Ic readonly -and -.Ic typeset -commands. -In -.Tn POSIX -mode, normal argument expansion is done; in -.Pf non- Tn POSIX -mode, -field splitting, file globbing, brace expansion and (normal) tilde expansion -are turned off, while assignment tilde expansion is turned on. -.It -Signal specification. -In -.Tn POSIX -mode, signals can be specified as digits, only -if signal numbers match -.Tn POSIX -values (i.e., HUP=1, INT=2, QUIT=3, ABRT=6, -KILL=9, ALRM=14 and TERM=15); in -.Pf non- Tn POSIX -mode, signals can always be digits. -.It -Alias expansion. -In -.Tn POSIX -mode, alias expansion is only carried out when -reading command words; in -.Pf non- Tn POSIX -mode, alias expansion is carried out on any -word following an alias that ended in a space. -For example, the following -.Ic for -loop -.Pp -.Bl -item -offset indent -compact -.It -.Ic alias a='for ' i='j' -.It -.Xo -.Ic a i in 1 2; do print i=$i j=$j; -.Ic done -.Xc -.El -.Pp -uses parameter -.Ic i -in -.Tn POSIX -mode, -.Ic j -in -.Pf non- Tn POSIX -mode. -.It -Test. -In -.Tn POSIX -mode, the expression -.Sq Fl t -(preceded by some number of -.Sq Ic \&! -arguments) is always true as it is a non-zero length string; in -.Pf non- Tn POSIX -mode, it tests if file descriptor 1 is a -.Xr tty 4 -(i.e., the -.Ar fd -argument to the -.Fl t -test may be left out and defaults to 1). -.El -.Ss Strict Bourne shell mode -When the -.Ic sh -option is enabled (see the -.Ic set -command), -.Nm -will behave like -.Xr sh 1 -in the following ways: -.Bl -bullet -.It -The parameter -.Ic $_ -is not set to -.Bl -dash -.It -the expanded alias' full program path after entering commands -that are tracked aliases -.It -the last argument on the command line after entering external -commands -.El -.It -File descriptors are left untouched when executing -.Ic exec -with no arguments. -.It -Backslash-escaped special characters are not substituted in -.Ev PS1 . -.It -Sequences of -.Sq Li (( Ns Ar ... Ns Li )) -are not interpreted as arithmetic expressions. -.El -.Ss Command execution -After evaluation of command-line arguments, redirections and parameter -assignments, the type of command is determined: a special built-in, a -function, a regular built-in or the name of a file to execute found using the -.Ev PATH -parameter. -The checks are made in the above order. -Special built-in commands differ from other commands in that the -.Ev PATH -parameter is not used to find them, and an error during their execution can -cause a non-interactive shell to exit and parameter assignments that are -specified before the command are kept after the command completes. -Just to confuse things, if the -.Ic posix -option is turned off (see the -.Ic set -command below), some special commands are very special in that no field -splitting, file globbing, brace expansion, nor tilde expansion is performed -on arguments that look like assignments. -Regular built-in commands are different only in that the -.Ev PATH -parameter is not used to find them. -.Pp -The original -.Nm ksh -and -.Tn POSIX -differ somewhat in which commands are considered -special or regular: -.Pp -.Tn POSIX -special commands -.Pp -.Ic \&. , \&: , break , continue , -.Ic eval , exec , exit , export , -.Ic readonly , return , set , shift , -.Ic trap , unset -.Pp -Additional -.Nm -special commands -.Pp -.Ic builtin , times , typeset -.Pp -Very special commands -.Pq Pf non- Tn POSIX -.Pp -.Ic alias , readonly , set , typeset -.Pp -.Tn POSIX -regular commands -.Pp -.Ic alias , bg , cd , command , -.Ic false , fc , fg , getopts , -.Ic jobs , kill , read , true , -.Ic umask , unalias , wait -.Pp -Additional -.Nm -regular commands -.Pp -.Ic \&[ , echo , let , print , -.Ic pwd , test , ulimit , whence -.Pp -In the future, the additional -.Nm -special and regular commands may be treated -differently from the -.Tn POSIX -special and regular commands. -.Pp -Once the type of the command has been determined, any command-line parameter -assignments are performed and exported for the duration of the command. -.Pp -The following describes the special and regular built-in commands: -.Bl -tag -width Ds -.It Ic \&. Ar file Op Ar arg1 ... -Execute the commands in -.Ar file -in the current environment. -The file is searched for in the directories of -.Ev PATH . -If arguments are given, the positional parameters may be used to access them -while -.Ar file -is being executed. -If no arguments are given, the positional parameters are -those of the environment the command is used in. -.It Ic \&: Op Ar ... -The null command. -Exit status is set to zero. -.It Xo Ic alias -.Op Fl d | Ic +-t Op Fl r -.Op Ic +-px -.Op Ic +- -.Oo Ar name -.Op Ns = Ns Ar value -.Ar ... Oc -.Xc -Without arguments, -.Ic alias -lists all aliases. -For any name without a value, the existing alias is listed. -Any name with a value defines an alias (see -.Sx Aliases -above). -.Pp -When listing aliases, one of two formats is used. -Normally, aliases are listed as -.Ar name Ns = Ns Ar value , -where -.Ar value -is quoted. -If options were preceded with -.Ql + -or a lone -.Ql + -is given on the command line, only -.Ar name -is printed. -In addition, if the -.Fl p -option is used, each alias is prefixed with the string -.Dq alias\ \& . -.Pp -The -.Fl x -option sets -.Po Ic \&+x -\ clears -.Pc -the export attribute of an alias or, if no names are given, lists the aliases -with the export attribute (exporting an alias has no effect). -.Pp -The -.Fl t -option indicates that tracked aliases are to be listed/set (values specified on -the command line are ignored for tracked aliases). -The -.Fl r -option indicates that all tracked aliases are to be reset. -.Pp -The -.Fl d -option causes directory aliases, which are used in tilde expansion, to be -listed or set (see -.Sx Tilde expansion -above). -.It Ic bg Op Ar job ... -Resume the specified stopped job(s) in the background. -If no jobs are specified, -.Ic %\&+ -is assumed. -This command is only available on systems which support job control (see -.Sx Job control -below for more information). -.It Ic bind Op Fl l -The current bindings or, if the -.Fl l -flag is given, -the names of the functions to which keys may be bound, are listed. -See -.Sx Emacs editing mode -for more information. -.It Xo Ic bind Op Fl m -.Ar string Ns = Ns Op Ar substitute -.Ar ... -.Xc -.It Xo Ic bind -.Ar string Ns = Ns Op Ar editing-command -.Ar ... -.Xc -The specified editing command is bound to the given -.Ar string , -which should consist of a control character (which may be written using caret -notation, i.e., ^X), optionally preceded by one of the two prefix characters. -If the -.Fl m -flag is given, the specified input -.Ar string -will afterwards be immediately replaced by the given -.Ar substitute -string, which may contain editing commands. -.Pp -Future input of the -.Ar string -will cause the editing command to be immediately invoked. -Note that although only two prefix characters (usually -.Tn ESC -and ^X) are supported, some -multi-character sequences can be supported. -The following binds the arrow keys on an -.Tn ANSI -terminal or -.Xr xterm 1 -(these are in the default bindings). -Of course some escape sequences won't work out quite this nicely. -.Pp -.Bl -item -compact -.It -.Ic bind '^[['=prefix-2 -.It -.Ic bind '^XA'=up-history -.It -.Ic bind '^XB'=down-history -.It -.Ic bind '^XC'=forward-char -.It -.Ic bind '^XD'=backward-char -.El -.It Ic break Op Ar level -Exit the -.Ar level Ns th -inner-most -.Ic for , -.Ic select , -.Ic until -or -.Ic while -loop. -.Ar level -defaults to 1. -.It Ic builtin Ar command Op Ar arg1 ... -Execute the built-in command -.Ar command . -.It Xo Ic cd Op Fl LP -.Op Ar dir -.Xc -Set the working directory to -.Ar dir . -If the parameter -.Ev CDPATH -is set, it lists the search path for the directory containing -.Ar dir . -A -.Dv NULL -path means the current directory. -If -.Ar dir -is found in any component of the -.Ev CDPATH -search path other than the -.Dv NULL -path, the name of the new working directory will be written to standard output. -If -.Ar dir -is missing, the home directory -.Ev HOME -is used. -If -.Ar dir -is -.Ql - , -the previous working directory is used (see -.Ev OLDPWD -parameter). -If the -.Fl L -option (logical path) is used or if the -.Ic physical -option (see the -.Ic set -command below) isn't set, references to -.Dq \&.\&. -in -.Ar dir -are relative to the path used to get to the directory. -If the -.Fl P -option (physical path) is used or if the -.Ic physical -option is set, -.Dq \&.\&. -is relative to the filesystem directory tree. -The -.Ev PWD -and -.Ev OLDPWD -parameters are updated to reflect the current and old working directory, -respectively. -.It Xo Ic cd Op Fl LP -.Ar old new -.Xc -The string -.Ar new -is substituted for -.Ar old -in the current directory, and the shell attempts to change to the new -directory. -.It Xo Ic command Op Fl pvV -.Ar cmd Op Ar arg1 ... -.Xc -If neither the -.Fl v -nor -.Fl V -option is given, -.Ar cmd -is executed exactly as if -.Ic command -had not been specified, with two exceptions. -First, -.Ar cmd -cannot be a shell function, and second, special built-in commands lose their -specialness (i.e., redirection and utility errors do not cause the shell to -exit, and command assignments are not permanent). -If the -.Fl p -option is given, a default search path is used instead of the current value of -.Ev PATH -(the actual value of the default path is system dependent: on -.Tn POSIX Ns ish -systems, it is the value returned by -.Ic getconf CS_PATH ) . -.Pp -If the -.Fl v -option is given, instead of executing -.Ar cmd , -information about what would be executed is given (and the same is done for -.Ar arg1 ... ) . -For special and regular built-in commands and functions, their names are simply -printed; for aliases, a command that defines them is printed; and for commands -found by searching the -.Ev PATH -parameter, the full path of the command is printed. -If no command is found -(i.e., the path search fails), nothing is printed and -.Ic command -exits with a non-zero status. -The -.Fl V -option is like the -.Fl v -option, except it is more verbose. -.It Ic continue Op Ar level -Jumps to the beginning of the -.Ar level Ns th -inner-most -.Ic for , -.Ic select , -.Ic until -or -.Ic while -loop. -.Ar level -defaults to 1. -.It Xo Ic echo Op Fl neE -.Op Ar arg ... -.Xc -Prints its arguments (separated by spaces) followed by a newline, to the -standard output. -The newline is suppressed if any of the arguments contain the -backslash sequence -.Ql \ec . -See the -.Ic print -command below for a list of other backslash sequences that are recognized. -.Pp -The options are provided for compatibility with -.Bx -shell scripts. -The -.Fl n -option suppresses the trailing newline, -.Fl e -enables backslash interpretation (a no-op, since this is normally done), and -.Fl E -suppresses backslash interpretation. -.It Ic eval Ar command ... -The arguments are concatenated (with spaces between them) to form a single -string which the shell then parses and executes in the current environment. -.It Xo Ic exec -.Op Ar command Op Ar arg ... -.Xc -The command is executed without forking, replacing the shell process. -.Pp -If no command is given except for I/O redirection, the I/O redirection is -permanent and the shell is -not replaced. -Any file descriptors greater than 2 which are opened or -.Xr dup 2 Ns 'd -in this way are not made available to other executed commands (i.e., commands -that are not built-in to the shell). -Note that the Bourne shell differs here; -it does pass these file descriptors on. -.It Ic exit Op Ar status -The shell exits with the specified exit status. -If -.Ar status -is not specified, the exit status is the current value of the -.Ic $\&? -parameter. -.It Xo Ic export Op Fl p -.Op Ar parameter Ns Op \&= Ns Ar value -.Xc -Sets the export attribute of the named parameters. -Exported parameters are passed in the environment to executed commands. -If values are specified, the named parameters are also assigned. -.Pp -If no parameters are specified, the names of all parameters with the export -attribute are printed one per line, unless the -.Fl p -option is used, in which case -.Ic export -commands defining all exported parameters, including their values, are printed. -.It Ic false -A command that exits with a non-zero status. -.It Xo Ic fc -.Oo Fl e Ar editor \*(Ba -.Fl l Op Fl n Oc -.Op Fl r -.Op Ar first Op Ar last -.Xc -.Ar first -and -.Ar last -select commands from the history. -Commands can be selected by history number -or a string specifying the most recent command starting with that string. -The -.Fl l -option lists the command on stdout, and -.Fl n -inhibits the default command numbers. -The -.Fl r -option reverses the order of the list. -Without -.Fl l , -the selected commands are edited by the editor specified with the -.Fl e -option, or if no -.Fl e -is specified, the editor specified by the -.Ev FCEDIT -parameter (if this parameter is not set, -.Pa /bin/ed -is used), and then executed by the shell. -.It Xo Ic fc -.Oo Fl e No \&- \&| Fl s Oc -.Op Fl g -.Op Ar old Ns = Ns Ar new -.Op Ar prefix -.Xc -Re-execute the selected command (the previous command by default) after -performing the optional substitution of -.Ar old -with -.Ar new . -If -.Fl g -is specified, all occurrences of -.Ar old -are replaced with -.Ar new . -This command is usually accessed with the predefined -.Ic alias r='fc -e -' . -.It Ic fg Op Ar job ... -Resume the specified job(s) in the foreground. -If no jobs are specified, -.Ic %\&+ -is assumed. -This command is only available on systems which support job control (see -.Sx Job control -below for more information). -.It Xo Ic getopts Ar optstring name -.Op Ar arg ... -.Xc -Used by shell procedures to parse the specified arguments (or positional -parameters, if no arguments are given) and to check for legal options. -.Ar optstring -contains the option letters that -.Ic getopts -is to recognize. -If a letter is followed by a colon, the option is expected to -have an argument. -Options that do not take arguments may be grouped in a single argument. -If an option takes an argument and the option character is not the -last character of the argument it is found in, the remainder of the argument is -taken to be the option's argument; otherwise, the next argument is the option's -argument. -.Pp -Each time -.Ic getopts -is invoked, it places the next option in the shell parameter -.Ar name -and the index of the next argument to be processed in the shell parameter -.Ev OPTIND . -If the option was introduced with a -.Ql + , -the option placed in -.Ar name -is prefixed with a -.Ql + . -When an option requires an argument, -.Ic getopts -places it in the shell parameter -.Ev OPTARG . -When an illegal option or a missing option argument is encountered, a question -mark or a colon is placed in -.Ar name -(indicating an illegal option or missing argument, respectively) and -.Ev OPTARG -is set to the option character that caused the problem. -If -.Ar optstring -does not begin with a colon, a question mark is placed in -.Ar name , -.Ev OPTARG -is unset and an error message is printed to standard error. -.Pp -When the end of the options is encountered, -.Ic getopts -exits with a non-zero exit status. -Options end at the first (non-option -argument) argument that does not start with a -.Ql - -or when a -.Ql -- -argument is encountered. -.Pp -Option parsing can be reset by setting -.Ev OPTIND -to 1 (this is done automatically whenever the shell or a shell procedure is -invoked). -.Pp -Warning: Changing the value of the shell parameter -.Ev OPTIND -to a value other than 1 or parsing different sets of arguments without -resetting -.Ev OPTIND -may lead to unexpected results. -.It Xo Ic hash Op Fl r -.Op Ar name ... -.Xc -Without arguments, any hashed executable command pathnames are listed. -The -.Fl r -option causes all hashed commands to be removed from the hash table. -Each -.Ar name -is searched as if it were a command name and added to the hash table if it is -an executable command. -.It Xo Ic jobs Op Fl lpn -.Op Ar job ... -.Xc -Display information about the specified job(s); if no jobs are specified, all -jobs are displayed. -The -.Fl n -option causes information to be displayed only for jobs that have changed -state since the last notification. -If the -.Fl l -option is used, the process ID of each process in a job is also listed. -The -.Fl p -option causes only the process group of each job to be printed. -See -.Sx Job control -below for the format of -.Ar job -and the displayed job. -.It Xo Ic kill -.Oo Fl s Ar signame \*(Ba -.Fl Ar signum | Fl Ar signame Oc { -.Ar job | -.Ar pid | -.Ar pgrp No } Ar ... -.Xc -Send the specified signal to the specified jobs, process IDs or process -groups. -If no signal is specified, the -.Dv TERM -signal is sent. -If a job is specified, the signal is sent to the job's process group. -See -.Sx Job control -below for the format of -.Ar job . -.It Ic kill -l Op Ar exit-status ... -Print the name of the signal that killed a process which exited with the -specified -.Ar exit-status Ns es. -If no arguments are specified, a list of all the signals, their numbers and -a short description of them are printed. -.It Ic let Op Ar expression ... -Each expression is evaluated (see -.Sx Arithmetic expressions -above). -If all expressions are successfully evaluated, the exit status is 0 (1) -if the last expression evaluated to non-zero (zero). -If an error occurs during -the parsing or evaluation of an expression, the exit status is greater than 1. -Since expressions may need to be quoted, -.Ic (( Ar expr Ic )) -is syntactic sugar for -.Ic let \&" Ns Ar expr Ns Ic \&" . -.It Xo Ic print -.Oo Fl nprsu Ns Ar n \*(Ba -.Fl R Op Fl en Oc -.Op Ar argument ... -.Xc -.Ic print -prints its arguments on the standard output, separated by spaces and -terminated with a newline. -The -.Fl n -option suppresses the newline. -By default, certain C escapes are translated. -These include -.Ql \eb , -.Ql \ef , -.Ql \en , -.Ql \er , -.Ql \et , -.Ql \ev -and -.Ql \e0### -.Po -.Ql # -is an octal digit, of which there may be 0 to 3 -.Pc . -.Ql \ec -is equivalent to using the -.Fl n -option. -.Ql \e -expansion may be inhibited with the -.Fl r -option. -The -.Fl s -option prints to the history file instead of standard output, the -.Fl u -option prints to file descriptor -.Ar n -.Po -.Ar n -defaults to 1 if omitted -.Pc , -and the -.Fl p -option prints to the co-process (see -.Sx Co-processes -above). -.Pp -The -.Fl R -option is used to emulate, to some degree, the -.Bx -.Xr echo 1 -command, which does not process -.Ql \e -sequences unless the -.Fl e -option is given. -As above, the -.Fl n -option suppresses the trailing newline. -.It Ic pwd Op Fl LP -Print the present working directory. -If the -.Fl L -option is used or if the -.Ic physical -option (see the -.Ic set -command below) isn't set, the logical path is printed (i.e., the path used to -.Ic cd -to the current directory). -If the -.Fl P -option (physical path) is used or if the -.Ic physical -option is set, the path determined from the filesystem (by following -.Dq \&.\&. -directories to the root directory) is printed. -.It Xo Ic read Oo Fl prsu Ns Ar n -.Oc Op Ar parameter ... -.Xc -Reads a line of input from the standard input, separates the line into fields -using the -.Ev IFS -parameter (see -.Sx Substitution -above) and assigns each field to the specified parameters. -If there are more parameters than fields, the extra parameters are set to -.Dv NULL , -or alternatively, if there are more fields than parameters, the last parameter -is assigned the remaining fields (inclusive of any separating spaces). -If no parameters are specified, the -.Ev REPLY -parameter is used. -If the input line ends in a backslash and the -.Fl r -option was not used, the backslash and the newline are stripped and more input -is read. -If no input is read, -.Ic read -exits with a non-zero status. -.Pp -The first parameter may have a question mark and a string appended to it, in -which case the string is used as a prompt (printed to standard error before -any input is read) if the input is a -.Xr tty 4 -(e.g., -.Ic read nfoo?'number of foos: ' ) . -.Pp -The -.Fl u Ns Ar n -and -.Fl p -options cause input to be read from file descriptor -.Ar n -or the current co-process (see -.Sx Co-processes -above for comments on this), respectively. -If the -.Fl s -option is used, input is saved to the history file. -.It Xo Ic readonly Op Fl p -.Oo Ar parameter -.Op Ns = Ns Ar value -.Ar ... Oc -.Xc -Sets the read-only attribute of the named parameters. -If values are given, -parameters are set to them before setting the attribute. -Once a parameter is -made read-only, it cannot be unset and its value cannot be changed. -.Pp -If no parameters are specified, the names of all parameters with the read-only -attribute are printed one per line, unless the -.Fl p -option is used, in which case -.Ic readonly -commands defining all read-only parameters, including their values, are -printed. -.It Ic return Op Ar status -Returns from a function or -.Ic \&. -script, with exit status -.Ar status . -If no -.Ar status -is given, the exit status of the last executed command is used. -If used outside of a function or -.Ic \&. -script, it has the same effect as -.Ic exit . -Note that -.Nm -treats both profile and -.Ev ENV -files as -.Ic \&. -scripts, while the original Korn shell only treats profiles as -.Ic \&. -scripts. -.It Xo Ic set Op Ic +-abCefhkmnpsuvxX -.Op Ic +-o Ar option -.Op Ic +-A Ar name -.Op Fl \&- -.Op Ar arg ... -.Xc -The -.Ic set -command can be used to set -.Pq Ic \&- -or clear -.Pq Ic \&+ -shell options, set the positional parameters or set an array parameter. -Options can be changed using the -.Ic \&+ Ns Fl o Ar option -syntax, where -.Ar option -is the long name of an option, or using the -.Ic \&+\&- Ns Ar letter -syntax, where -.Ar letter -is the option's single letter name (not all options have a single letter name). -The following table lists both option letters (if they exist) and long names -along with a description of what the option does: -.Bl -tag -width 15n -.It Fl A -Sets the elements of the array parameter -.Ar name -to -.Ar arg ... . -If -.Fl A -is used, the array is reset (i.e., emptied) first; if -.Ic \&+A -is used, the first N elements are set (where N is the number of -.Ar arg Ns s ) , -the rest are left untouched. -.It Fl a Ic allexport -All new parameters are created with the export attribute. -.It Fl b Ic notify -Print job notification messages asynchronously, instead of just before the -prompt. -Only used if job control is enabled -.Pq Fl m . -.It Fl C Ic noclobber -Prevent -.Ic \&> -redirection from overwriting existing files -.Po -.Ic \&>\&| -must be used to force an overwrite -.Pc . -.It Fl e Ic errexit -Exit (after executing the -.Dv ERR -trap) as soon as an error occurs or a command fails (i.e., exits with a -non-zero status). -This does not apply to commands whose exit status is -explicitly tested by a shell construct such as -.Ic if , -.Ic until , -.Ic while , -.Ic \&&\&& -or -.Ic \&|\&| -statements. -.It Fl f Ic noglob -Do not expand file name patterns. -.It Fl h Ic trackall -Create tracked aliases for all executed commands (see -.Sx Aliases -above). -Enabled by default for non-interactive shells. -.It Fl i Ic interactive -Enable interactive mode. -This can only be set/unset when the shell is invoked. -.It Fl k Ic keyword -Parameter assignments are recognized anywhere in a command. -.It Fl l Ic login -The shell is a login shell. -This can only be set/unset when the shell is invoked (see -.Sx Shell startup -above). -.It Fl m Ic monitor -Enable job control (default for interactive shells). -.It Fl n lc noexec -Do not execute any commands. -Useful for checking the syntax of scripts -(ignored if interactive). -.It Fl p Ic privileged -Set automatically if, when the shell starts, the read UID or GID does not match -the effective UID (EUID) or GID (EGID), respectively. -See -.Sx Shell startup -above for a description of what this means. -.It Fl r Ic restricted -Enable restricted mode. -This option can only be used when the shell is invoked. -See -.Sx Shell startup -above for a description of what this means. -.It Fl s Ic stdin -If used where the shell is invoked, commands are read from standard input. -Set automatically if the shell is invoked with no arguments. -.Pp -When -.Fl s -is used with the -.Ic set -command it causes the specified arguments to be sorted before assigning them to -the positional parameters (or to array -.Ar name , -if -.Fl A -is used). -.It Fl u Ic nounset -Referencing of an unset parameter is treated as an error, unless one of the -.Ql - , -.Ql + -or -.Ql = -modifiers is used. -.It Fl v Ic verbose -Write shell input to standard error as it is read. -.It Fl x Ic xtrace -Print commands and parameter assignments when they are executed, preceded by -the value of -.Ev PS4 . -.It Fl X Ic markdirs -Mark directories with a trailing -.Ql / -during file name generation. -.It Ic bgnice -Background jobs are run with lower priority. -.It Ic braceexpand -Enable brace expansion (a.k.a., alternation). -.It Ic emacs -Enable BRL emacs-like command-line editing (interactive shells only); see -.Sx Emacs editing mode . -.It Ic emacs-usemeta -In emacs command-line editing, use the 8th bit as meta (^[) prefix. -This is the default. -.It Ic gmacs -Enable gmacs-like command-line editing (interactive shells only). -Currently identical to emacs editing except that transpose (^T) acts slightly -differently. -.It Ic ignoreeof -The shell will not (easily) exit when end-of-file is read; -.Ic exit -must be used. -To avoid infinite loops, the shell will exit if -.Dv EOF -is read 13 times in a row. -.It Ic nohup -Do not kill running jobs with a -.Dv SIGHUP -signal when a login shell exists. -Currently set by default, but this will -change in the future to be compatible with the original Korn shell (which -doesn't have this option, but does send the -.Dv SIGHUP -signal). -.It Ic nolog -No effect. -In the original Korn shell, this prevents function definitions from -being stored in the history file. -.It Ic physical -Causes the -.Ic cd -and -.Ic pwd -commands to use -.Dq physical -(i.e., the filesystem's) -.Dq \&.\&. -directories instead of -.Dq logical -directories (i.e., the shell handles -.Dq \&.\&. , -which allows the user to be oblivious of symbolic links to directories). -Clear by default. -Note that setting this option does not affect the current value of the -.Ev PWD -parameter; only the -.Ic cd -command changes -.Ev PWD . -See the -.Ic cd -and -.Ic pwd -commands above for more details. -.It Ic posix -Enable -.Tn POSIX -mode. -See -.Sx POSIX mode -above. -.It Ic sh -Enable strict Bourne shell mode (see -.Sx Strict Bourne shell mode ) . -.It Ic vi -Enable -.Xr vi 1 Ns -like -command-line editing (interactive shells only). -.It Ic viraw -No effect. -In the original Korn shell, unless -.Ic viraw -was set, the vi command-line mode would let the -.Xr tty 4 -driver do the work until -.Tn ESC -(^[) was entered. -.Nm -is always in viraw mode. -.It Ic vi-esccomplete -In vi command-line editing, do command and file name completion when escape -(^[) is entered in command mode. -.It Ic vi-show8 -Prefix characters with the eighth bit set with -.Dq M\&- . -If this option is not set, characters in the range 128\-160 are printed as is, -which may cause problems. -.It Ic vi-tabcomplete -In vi command-line editing, do command and file name completion when tab (^I) -is entered in insert mode. -This is the default. -.El -.Pp -These options can also be used upon invocation of the shell. -The current set of -options (with single letter names) can be found in the parameter -.Dv \&- . -.Ic set Fl o -with no option name will list all the options and whether each is on or off; -.Ic set +o -will print the long names of all options that are currently on. -.Pp -Remaining arguments, if any, are positional parameters and are assigned, in -order, to the positional parameters (i.e. -.Ic $1 , $2 , -etc.). -If options end with -.Ql -- -and there are no remaining arguments, all positional parameters are cleared. -If no options or arguments are given, the values of all names are printed. -For unknown historical reasons, a lone -.Ql - -option is treated specially \(em it clears both the -.Fl x -and -.Fl v -options. -.It Ic shift Op Ar number -The positional parameters -.Ar number Ns +1 , -.Ar number Ns +2 , -etc. are renamed to -.Dq 1 , -.Dq 2 , -etc. -.Ar number -defaults to 1. -.It Ic test Ar expression -.It Ic \&[ Ar expression Ic \&] -.Ic test -evaluates the -.Ar expression -and returns zero status if true, 1 if false, or greater than 1 if there -was an error. -It is normally used as the condition command of -.Ic if -and -.Ic while -statements. -The following basic expressions are available: -.Bl -tag -width 17n -.It Fl r Ar file -.Ar file -exists and is readable. -.It Fl w Ar file -.Ar file -exists and is writable. -.It Fl x Ar file -.Ar file -exists and is executable. -.It Fl a Ar file -.Ar file -exists. -.It Fl e Ar file -.Ar file -exists. -.It Fl f Ar file -.Ar file -is a regular file. -.It Fl d Ar file -.Ar file -is a directory. -.It Fl c Ar file -.Ar file -is a character special device. -.It Fl b Ar file -.Ar file -is a block special device. -.It Fl p Ar file -.Ar file -is a named pipe. -.It Fl u Ar file -.Ar file Ns 's -mode has setuid bit set. -.It Fl g Ar file -.Ar file Ns 's -mode has setgid bit set. -.It Fl k Ar file -.Ar file Ns 's -mode has sticky bit set. -.It Fl s Ar file -.Ar file -is not empty. -.It Fl O Ar file -.Ar file Ns 's -owner is the shell's effective user ID. -.It Fl G Ar file -.Ar file Ns 's -group is the shell's effective group ID. -.It Fl h Ar file -.Ar file -is a symbolic link. -.It Fl H Ar file -.Ar file -is a context dependent directory (only useful on HP-UX). -.It Fl L Ar file -.Ar file -is a symbolic link. -.It Fl S Ar file -.Ar file -is a socket. -.It Fl o Ar option -Shell -.Ar option -is set (see the -.Ic set -command above for a list of options). -As a non-standard extension, if the option starts with a -.Ql \&! , -the test is negated; the test always fails if -.Ar option -doesn't exist (thus -.Ic \&[ -o Ar foo -.Ic -o -o \&! Ns Ar foo Ic \&] -returns true if and only if option -.Ar foo -exists). -.It Ar file1 Fl nt Ar file2 -.Ar file1 -is newer than -.Ar file2 . -.It Ar file1 Fl ot Ar file2 -.Ar file1 -is older than -.Ar file2 . -.It Ar file1 Fl ef Ar file2 -.Ar file1 -is the same file as -.Ar file2 . -.It Fl t Op Ar fd -File descriptor -.Ar fd -is a -.Xr tty 4 -device. -If the -.Ic posix -option is not set, -.Ar fd -may be left out, in which case it is taken to be 1 (the behaviour differs due -to the special -.Tn POSIX -rules described below). -.It Ar string -.Ar string -is not empty (has non-zero length). -Note that there is the potential for problems if -.Ar string -turns out to be an operator (e.g. -.Fl r ) . -It is generally better to use a test like -.No ( Ns Nm sh ) -.Bk -words -.Sm off -.Ic \&[\ X\&" Ar string Ic \&" Ic \ \&] -.Sm on -.Ek -.No or ( Ns Nm ksh ) -.Bk -words -.Ic \&[[ Fl n Ar string Ic \&]] -.Ek -instead (double quotes are used in case -.Ar string -contains spaces or globbing characters). -.It Fl z Ar string -.Ar string -is empty. -.It Fl n Ar string -.Ar string -is not empty. -.It Ar string No = Ar string -Strings are equal. -.It Ar string No == Ar string -Strings are equal. -.It Ar string No \&!= Ar string -Strings are not equal. -.It Ar number Fl eq Ar number -Numbers compare equal. -.It Ar number Fl ne Ar number -Numbers compare not equal. -.It Ar number Fl ge Ar number -Numbers compare greater than or equal. -.It Ar number Fl gt Ar number -Numbers compare greater than. -.It Ar number Fl le Ar number -Numbers compare less than or equal. -.It Ar number Fl \< Ar number -Numbers compare less than. -.El -.Pp -The above basic expressions, in which unary operators have precedence over -binary operators, may be combined with the following operators (listed in -increasing order of precedence): -.Pp -.Bl -tag -width "expr -o expr" -compact -.It Ar expr Fl o Ar expr -Logical -.Tn OR . -.It Ar expr Fl a Ar expr -Logical -.Tn AND . -.It Ic \&! Ar expr -Logical -.Tn NOT . -.It Ic \&( Ar expr Ic \&) -Grouping. -.El -.Pp -On operating systems not supporting -.Pa /dev/fd/ Ns Ar n -devices (where -.Ar n -is a file descriptor number), the -.Ic test -command will attempt to fake it for all tests that operate on files (except the -.Fl e -test). -For example, -.Ic \&[ -w /dev/fd/2 \&] -tests if file descriptor 2 is writable. -.Pp -Note that some special rules are applied (courtesy of -.Tn POSIX ) -if the number of -arguments to -.Ic test -or -.Ic \&[ ... \&] -is less than five; if leading -.Ql \&! -arguments can be stripped such that only one argument remains then a string -length test is performed (again, even if the argument is a unary operator); if -leading -.Ql \&! -arguments can be stripped such that three arguments remain and the second -argument is a binary operator, then the binary operation is performed (even -if the first argument is a unary operator, including an unstripped -.Ql \&! ) . -.Pp -.Sy Note: -A common mistake is to use -.Bk -words -.Ic if \&[ $foo = bar \&] -.Ek -which fails if parameter -.Ic foo -is -.Dv NULL -or unset, if it has embedded spaces (i.e., -.Ev IFS -characters), or if it is a unary operator like -.Sq Ic \&! -or -.Sq Fl n . -Use tests like -.No ( Ns Nm sh ) -.Bk -words -.Ic if \&[ \&"X$foo\&" = Xbar \&] -.Ek -.No or ( Ns Nm ksh ) -.Bk -words -.Ic if \&[[ \&$foo = bar \&]] -.Ek -instead. -.It Xo Ic time Op Fl p -.Op Ar pipeline -.Xc -If a -.Ar pipeline -is given, the times used to execute the pipeline are reported. -If no pipeline -is given, then the user and system time used by the shell itself and all the -commands it has run since it was started is reported. -The times reported are the real time (elapsed time from start to finish), -the user CPU time (time spent running in user mode) and the system CPU time -(time spent running in kernel mode). -Times are reported to standard error; the format of the output is: -.Pp -.Dl " 0m0.00s real 0m0.00s user 0m0.00s system" -.Pp -If the -.Fl p -option is given the output is slightly longer: -.Bd -literal -offset indent -real 0.00 -user 0.00 -sys 0.00 -.Ed -.Pp -It is an error to specify the -.Fl p -option unless -.Ar pipeline -is a simple command. -.Pp -Simple redirections of standard error do not effect the output of the -.Ic time -command: -.Pp -.Dl time sleep 1 2> afile -.Dl { time sleep 1; } 2> afile -.Pp -Times for the first command do not go to -.Dq afile , -but those of the second command do. -.It Ic times -Print the accumulated user and system times used both by the shell -and by processes that the shell started which have exited. -The format of the output is: -.Bd -literal -offset indent -0m0.00s 0m0.00s -0m0.00s 0m0.00s -.Ed -.It Ic trap Op Ar handler signal ... -Sets a trap handler that is to be executed when any of the -specified signals are received. -.Ar handler -is either a -.Dv NULL -string, indicating the signals are to be ignored, a minus sign -.Pq Sq \&- , -indicating that the default action is to be taken for the signals (see -.Xr signal 3 ) -or a string containing shell commands to be evaluated and executed at the -first opportunity (i.e., when the current command completes or before -printing the next -.Ev PS1 -prompt) after receipt of one of the signals. -.Ar signal -is the name of a signal (e.g., -.Dv PIPE -or -.Dv ALRM ) -or the number of the signal (see the -.Ic kill Fl l -command above). -There are two special signals: -.Dv EXIT -(also known as 0), which is executed when the shell is about to exit, and -.Dv ERR , -which is executed after an error occurs (an error is something that would cause -the shell to exit if the -.Fl e -or -.Ic errexit -option were see \(em see the -.Ic set -command above). -.Dv EXIT -handlers are executed in the environment of the last executed command. -Note -that for non-interactive shells, the trap handler cannot be changed for signals -that were ignored when the shell started. -.Pp -With no arguments, -.Ic trap -lists, as a series of -.Ic trap -commands, the current state of the traps that have been set since the shell -started. -Note that the output of -.Ic trap -cannot be usefully piped to another process (an artifact of the fact that -traps are cleared when subprocesses are created). -.Pp -The original Korn shell's -.Dv DEBUG -trap and the handling of -.Dv ERR -and -.Dv EXIT -traps in functions are not yet implemented. -.It Ic true -A command that exits with a zero value. -.It Xo Ic typeset -.Oo Op Ic +-Ulprtux -.Op Fl L Ns Op Ar n -.Op Fl R Ns Op Ar n -.Op Fl Z Ns Op Ar n -.Op Fl i Ns Op Ar n -.No \&| Fl f Op Fl tux Oc -.Oo Ar name -.Op Ns = Ns Ar value -.Ar ... Oc -.Xc -Display or set parameter attributes. -With no -.Ar name -arguments, parameter attributes are displayed; if no options are used, the -current attributes of all parameters are printed as -.Ic typeset -commands; if an option is given (or -.Ql - -with no option letter), all parameters and their values with the specified -attributes are printed; if options are introduced with -.Ql + , -parameter values are not printed. -.Pp -If -.Ar name -arguments are given, the attributes of the named parameters are set -.Pq Ic \&- -or cleared -.Pq Ic \&+ . -Values for parameters may optionally be specified. -If -.Ic typeset -is used inside a function, any newly created parameters are local to the -function. -.Pp -When -.Fl f -is used, -.Ic typeset -operates on the attributes of functions. -As with parameters, if no -.Ar name Ns s -are given, functions are listed with their values (i.e., definitions) unless -options are introduced with -.Ql + , -in which case only the function names are reported. -.Bl -tag -width 3n -.It Fl L Ns Ar n -Left justify attribute. -.Ar n -specifies the field width. -If -.Ar n -is not specified, the current width of a parameter (or the width of its first -assigned value) is used. -Leading whitespace (and zeros, if used with the -.Fl Z -option) is stripped. -If necessary, values are either truncated or space padded -to fit the field width. -.It Fl R Ns Ar n -Right justify attribute. -.Ar n -specifies the field width. -If -.Ar n -is not specified, the current width of a parameter (or the width of its first -assigned value) is used. -Trailing whitespace is stripped. -If necessary, values are either stripped of leading characters or space -padded to make them fit the field width. -.It Fl Z Ns Ar n -Zero fill attribute. -If not combined with -.Fl L , -this is the same as -.Fl R , -except zero padding is used instead of space padding. -.It Fl i Ns Ar n -Integer attribute. -.Ar n -specifies the base to use when displaying the integer (if not specified, the -base given in the first assignment is used). -Parameters with this attribute may -be assigned values containing arithmetic expressions. -.It Fl U -Unsigned integer attribute. -Integers are printed as unsigned values (only -useful when combined with the -.Fl i -option). -This option is not in the original Korn shell. -.It Fl f -Function mode. -Display or set functions and their attributes, instead of parameters. -.It Fl l -Lower case attribute. -All upper case characters in values are converted to lower case. -(In the original Korn shell, this parameter meant -.Dq long integer -when used with the -.Fl i -option.) -.It Fl p -Print complete -.Ic typeset -commands that can be used to re-create the attributes (but not the values) of -parameters. -This is the default action (option exists for ksh93 compatibility). -.It Fl r -Read-only attribute. -Parameters with this attribute may not be assigned to or unset. -Once this attribute is set, it cannot be turned off. -.It Fl t -Tag attribute. -Has no meaning to the shell; provided for application use. -.Pp -For functions, -.Fl t -is the trace attribute. -When functions with the trace attribute are executed, the -.Ic xtrace -.Pq Fl x -shell option is temporarily turned on. -.It Fl u -Upper case attribute. -All lower case characters in values are converted to upper case. -(In the original Korn shell, this parameter meant -.Dq unsigned integer -when used with the -.Fl i -option, which meant upper case letters would never be used for bases greater -than 10. -See the -.Fl U -option.) -.Pp -For functions, -.Fl u -is the undefined attribute. -See -.Sx Functions -above for the implications of this. -.It Fl x -Export attribute. -Parameters (or functions) are placed in the environment of -any executed commands. -Exported functions are not yet implemented. -.El -.It Xo Ic ulimit Op Fl acdfHlmnpsStv -.Op Ar value -.Xc -Display or set process limits. -If no options are used, the file size limit -.Pq Fl f -is assumed. -.Ar value , -if specified, may be either an arithmetic expression or the word -.Dq unlimited . -The limits affect the shell and any processes created by the shell after a -limit is imposed. -Note that some systems may not allow limits to be increased -once they are set. -Also note that the types of limits available are system -dependent \(em some systems have only the -.Fl f -limit. -.Bl -tag -width 5n -.It Fl a -Displays all limits; unless -.Fl H -is used, soft limits are displayed. -.It Fl H -Set the hard limit only (default is to set both hard and soft limits). -.It Fl S -Set the soft limit only (default is to set both hard and soft limits). -.It Fl c Ar n -Impose a size limit of -.Ar n -blocks on the size of core dumps. -.It Fl d Ar n -Impose a size limit of -.Ar n -kibibytes on the size of the data area. -.It Fl f Ar n -Impose a size limit of -.Ar n -blocks on files written by the shell and its child processes (files of any -size may be read). -.It Fl l Ar n -Impose a limit of -.Ar n -kibibytes on the amount of locked (wired) physical memory. -.It Fl m Ar n -Impose a limit of -.Ar n -kibibytes on the amount of physical memory used. -.It Fl n Ar n -Impose a limit of -.Ar n -file descriptors that can be open at once. -.It Fl p Ar n -Impose a limit of -.Ar n -processes that can be run by the user at any one time. -.It Fl s Ar n -Impose a size limit of -.Ar n -kibibytes on the size of the stack area. -.It Fl t Ar n -Impose a time limit of -.Ar n -.Tn CPU -seconds to be used by each process. -.It Fl T Ar n -Impose a real time limit of -.Ar n -.Tn human -seconds to be used by each process. -.It Fl v Ar n -Impose a limit of -.Ar n -kibibytes on the amount of virtual memory used. -.El -.Pp -As far as -.Ic ulimit -is concerned, a block is 512 bytes. -.It Xo Ic umask Op Fl S -.Op Ar mask -.Xc -Display or set the file permission creation mask or umask (see -.Xr umask 2 ) . -If the -.Fl S -option is used, the mask displayed or set is symbolic; otherwise, it is an -octal number. -.Pp -Symbolic masks are like those used by -.Xr chmod 1 . -When used, they describe what permissions may be made available (as opposed to -octal masks in which a set bit means the corresponding bit is to be cleared). -For example, -.Dq ug=rwx,o= -sets the mask so files will not be readable, writable or executable by -.Dq others -and is equivalent (on most systems) to the octal mask -.Dq 007 . -.It Xo Ic unalias Op Fl adt -.Op Ar name1 ... -.Xc -The aliases for the given names are removed. -If the -.Fl a -option is used, all aliases are removed. -If the -.Fl t -or -.Fl d -options are used, the indicated operations are carried out on tracked or -directory aliases, respectively. -.It Xo Ic unset Op Fl fv -.Ar parameter ... -.Xc -Unset the named parameters -.Po -.Fl v , -the default -.Pc -or functions -.Pq Fl f . -The exit status is non-zero if any of the parameters were already unset, zero -otherwise. -.It Ic wait Op Ar job ... -Wait for the specified job(s) to finish. -The exit status of -.Ic wait -is that of the last specified job; if the last job is killed by a signal, the -exit status is 128 + the number of the signal (see -.Ic kill -l Ar exit-status -above); if the last specified job can't be found (because it never existed or -had already finished), the exit status of -.Ic wait -is 127. -See -.Sx Job control -below for the format of -.Ar job . -.Ic wait -will return if a signal for which a trap has been set is received or if a -.Dv SIGHUP , -.Dv SIGINT -or -.Dv SIGQUIT -signal is received. -.Pp -If no jobs are specified, -.Ic wait -waits for all currently running jobs (if any) to finish and exits with a zero -status. -If job monitoring is enabled, the completion status of jobs is printed -(this is not the case when jobs are explicitly specified). -.It Xo Ic whence Op Fl pv -.Op Ar name ... -.Xc -For each -.Ar name , -the type of command is listed (reserved word, built-in, alias, -function, tracked alias or executable). -If the -.Fl p -option is used, a path search is performed even if -.Ar name -is a reserved word, alias, etc. -Without the -.Fl v -option, -.Ic whence -is similar to -.Ic command Fl v -except that -.Ic whence -will find reserved words and won't print aliases as alias commands. -With the -.Fl v -option, -.Ic whence -is the same as -.Ic command Fl V . -Note that for -.Ic whence , -the -.Fl p -option does not affect the search path used, as it does for -.Ic command . -If the type of one or more of the names could not be determined, the exit -status is non-zero. -.El -.Ss Job control -Job control refers to the shell's ability to monitor and control jobs, which -are processes or groups of processes created for commands or pipelines. -At a minimum, the shell keeps track of the status of the background (i.e., -asynchronous) jobs that currently exist; this information can be displayed -using the -.Ic jobs -commands. -If job control is fully enabled (using -.Ic set Fl m -or -.Ic set Fl o Ic monitor ) , -as it is for interactive shells, the processes of a job are placed in their -own process group. -Foreground jobs can be stopped by typing the suspend -character from the terminal (normally ^Z), jobs can be restarted in either the -foreground or background using the -.Ic fg -and -.Ic bg -commands, and the state of the terminal is saved or restored when a foreground -job is stopped or restarted, respectively. -.Pp -Note that only commands that create processes (e.g., asynchronous commands, -subshell commands and non-built-in, non-function commands) can be stopped; -commands like -.Ic read -cannot be. -.Pp -When a job is created, it is assigned a job number. -For interactive shells, this number is printed inside -.Dq \&[..\&] , -followed by the process IDs of the processes in the job when an asynchronous -command is run. -A job may be referred to in the -.Ic bg , -.Ic fg , -.Ic jobs , -.Ic kill -and -.Ic wait -commands either by the process ID of the last process in the command pipeline -(as stored in the -.Ic $\&! -parameter) or by prefixing the job number with a percent sign -.Pq Sq % . -Other percent sequences can also be used to refer to jobs: -.Bl -tag -width 10n -.It Ic %\&+ -The most recently stopped job or, if there are no stopped jobs, the oldest -running job. -.It Ic %% , % -Same as -.Ic %\&+ . -.It Ic %\&- -The job that would be the -.Ic %\&+ -job if the latter did not exist. -.It Ic % Ns Ar n -The job with job number -.Ar n . -.It Ic %\&? Ns Ar string -The job containing the string -.Ar string -(an error occurs if multiple jobs are matched). -.It Ic % Ns Ar string -The job starting with string -.Ar string -(an error occurs if multiple jobs are matched). -.El -.Pp -When a job changes state (e.g., a background job finishes or foreground job is -stopped), the shell prints the following status information: -.Bd -unfilled -offset indent -.Ic \&[ Ar number Ic \&] Ar flag status command -.Ed -.Pp -where -.Bl -tag -width "status" -.It Ar number -is the job number of the job. -.It Ar flag -is the -.Ql + -or -.Ql - -character if the job is the -.Ic %\&+ or -.Ic %\&- -job, respectively, or space if it is neither. -.It Ar status -indicates the current state of the job and can be: -.Bl -tag -width "Running" -.It Cm Running -The job has neither stopped nor exited (note that running does not necessarily -mean consuming -.Tn CPU -time \(em the process could be blocked waiting for some -event). -.It Cm Done Op Ar number -The job exited. -.Ar number -is the exit status of the job, which is omitted if the status is zero. -.It Cm Stopped Op Ar signal -The job was stopped by the indicated -.Ar signal -(if no signal is given, the job was stopped by -.Dv SIGTSTP ) . -.It Ar signal-description Op Dq core dumped -The job was killed by a signal (e.g., memory fault, hangup, etc.; use -.Ic kill -l -for a list of signal descriptions). -The -.Dq core dumped -message indicates the process created a core file. -.El -.It Ar command -is the command that created the process. -If there are multiple processes in -the job, each process will have a line showing its -.Ar command -and possibly its -.Ar status , -if it is different from the status of the previous process. -.El -.Pp -When an attempt is made to exit the shell while there are jobs in the stopped -state, the shell warns the user that there are stopped jobs and does not exit. -If another attempt is immediately made to exit the shell, the stopped jobs are -sent a -.Dv SIGHUP -signal and the shell exits. -Similarly, if the -.Ic nohup -option is not set and there are running jobs when an attempt is made to exit -a login shell, the shell warns the user and does not exit. -If another attempt -is immediately made to exit the shell, the running jobs are sent a -.Dv SIGHUP -signal and the shell exits. -.Ss Interactive input line editing -The shell supports three modes of reading command lines from a -.Xr tty 4 -in an interactive session, which is controlled by the -.Ic emacs , -.Ic gmacs -and -.Ic vi -options (at most one of these can be set at once). -If none of these options are enabled, the shell simply -reads lines using the normal -.Xr tty 4 -driver. -If the -.Ic emacs -or -.Ic gmacs -option is set, the shell allows emacs-like editing of the command; similarly, -if the -.Ic vi -option is set, the shell allows vi-like editing of the command. -These modes are described in detail in the following sections. -.Pp -In these editing modes, if a line is longer than the screen width (see -.Ev COLUMNS -parameter), -a -.Ql > , -.Ql + -or -.Ql < -character is displayed in the last column indicating that there are more -characters after, before and after, or before the current position, -respectively. -The line is scrolled horizontally as necessary. -.Ss Emacs editing mode -When the -.Ic emacs -option is set, interactive input line editing is enabled. -Warning: This mode is -slightly different from the emacs mode in the original Korn shell. -By default, the eight bit is used as Meta, but this can be turned -off by entering -.Ic set +o emacs-usemeta , -contained in the default -.Mx 6 -.Pa /etc/profile . -.Pp -In the emacs mode, various editing commands -(typically bound to one or more control characters) cause immediate actions -without waiting for a newline. -Several editing commands are bound to particular -control characters when the shell is invoked; these bindings can be changed -using the -.Ic bind -command. -.Pp -The following is a list of available editing commands. -Each description starts with the name of the command, an -.Ar n -(if the command can be prefixed with a count) and any keys the command is -bound to by default (written using caret notation, i.e., -.Tn "ASCII ESC" -character is -written as ^[). -A count prefix for a command is entered using the sequence -.Ic ^\&[ Ns Ar n , -where -.Ar n -is a sequence of 1 or more digits; unless otherwise specified, if a count is -omitted, it defaults to 1. -Note that editing command names are used only with the -.Ic bind -command. -Furthermore, many editing commands are useful only on terminals with -a visible cursor. -The default bindings were chosen to resemble corresponding -Emacs key bindings. -The users' -.Xr tty 4 -characters (e.g., -.Dv ERASE ) -are bound to -reasonable substitutes and override the default bindings. -.Bl -tag -width Ds -.It Ic abort ^G -Useful as a response to a request for a -.Ic search-history -pattern in order to abort the search. -.It Ic auto-insert Ar n -Simply causes the character to appear as literal input. -Most ordinary characters are bound to this. -.It Ic backward-char Ar n Ic ^B -Moves the cursor backward -.Ar n -characters. -.It Ic backward-word Ar n Ic ^[B -Moves the cursor backward to the beginning of the word; words consist of -alphanumerics, underscore -.Pq Sq _ -and dollar sign -.Pq Sq \&$ -characters. -.It Ic beginning-of-history ^[< -Moves to the beginning of the history. -.It Ic beginning-of-line ^A -Moves the cursor to the beginning of the edited input line. -.It Ic capitalize-word Ar n Ic ^[c , ^[C -Uppercase the first character in the next -.Ar n -words, leaving the cursor past the end of the last word. -.Pp -If the current line does not begin with a comment character, one is added at -the beginning of the line and the line is entered (as if return had been -pressed); otherwise, the existing comment characters are removed and the cursor -is placed at the beginning of the line. -.It Ic complete ^[^[ -.It Ic complete ^I -Automatically completes as much as is unique of the command name or the file -name containing the cursor. -If the entire remaining command or file name is -unique, a space is printed after its completion, unless it is a directory name -in which case -.Ql / -is appended. -If there is no command or file name with the current partial word -as its prefix, a bell character is output (usually causing a beep to be -sounded). -Currently being considered a bug, -if the file name contains \fB[\fR or \fB]\fR, it cannot be completed, even if -the character is escaped, in \fBemacs\fR mode. -This surprisingly works in \fBvi\fR mode; please submit a fix. -.It Ic complete-command ^X^[ -Automatically completes as much as is unique of the command name having the -partial word up to the cursor as its prefix, as in the -.Ic complete -command above. -.It Ic complete-file ^[^X -Automatically completes as much as is unique of the file name having the -partial word up to the cursor as its prefix, as in the -.Ic complete -command described above. -.It Ic complete-list ^[= -List the possible completions for the current word. -.It Xo Ic delete-char-backward Ar n Ic ERASE , -.Ic ^? , ^H -.Xc -Deletes -.Ar n -characters before the cursor. -.It Ic delete-char-forward Ar n -Deletes -.Ar n -characters after the cursor. -.It Xo Ic delete-word-backward Ar n Ic ^[ERASE , -.Ic ^[^? , ^[^H , ^[h -.Xc -Deletes -.Ar n -words before the cursor. -.It Ic delete-word-forward Ar n Ic ^[d -Deletes characters after the cursor up to the end of -.Ar n -words. -.It Ic down-history Ar n Ic ^N -Scrolls the history buffer forward -.Ar n -lines (later). -Each input line originally starts just after the last entry -in the history buffer, so -.Ic down-history -is not useful until either -.Ic search-history -or -.Ic up-history -has been performed. -.It Ic downcase-word Ar n Ic ^[L , ^[l -Lowercases the next -.Ar n -words. -.It Ic end-of-history ^[> -Moves to the end of the history. -.It Ic end-of-line ^E -Moves the cursor to the end of the input line. -.It Ic eot ^_ -Acts as an end-of-file; this is useful because edit-mode input disables -normal terminal input canonicalization. -.It Ic eot-or-delete Ar n Ic ^D -Acts as -.Ic eot -if alone on a line; otherwise acts as -.Ic delete-char-forward . -.It Ic error -Error (ring the bell). -.It Ic exchange-point-and-mark ^X^X -Places the cursor where the mark is and sets the mark to where the cursor was. -.It Ic expand-file ^[\&* -Appends a -.Ql * -to the current word and replaces the word with the result of performing file -globbing on the word. -If no files match the pattern, the bell is rung. -.It Ic forward-char Ar n Ic ^F -Moves the cursor forward -.Ar n -characters. -.It Ic forward-word Ar n Ic ^[f -Moves the cursor forward to the end of the -.Ar n Ns th -word. -.It Ic goto-history Ar n Ic ^[g -Goes to history number -.Ar n . -.It Ic kill-line KILL -Deletes the entire input line. -.It Ic kill-region ^W -Deletes the input between the cursor and the mark. -.It Ic kill-to-eol Ar n Ic ^K -Deletes the input from the cursor to the end of the line if -.Ar n -is not specified; otherwise deletes characters between the cursor and column -.Ar n . -.It Ic list ^[? -Prints a sorted, columnated list of command named or file names (if any) that -can complete the partial word containing the cursor. -Directory names have -.Ql / -appended to them. -.It Ic list-command ^X? -Prints a sorted, columnated list of command names (if any) that can complete -the partial word containing the cursor. -.It Ic list-file ^X^Y -Prints a sorted, columnated list of file names (if any) that can complete the -partial word containing the cursor. -File type indicators are appended as described under -.Ic list -above. -.It Ic newline ^J , ^M -Causes the current input line to be processed by the shell. -The current cursor position may be anywhere on the line. -.It Ic newline-and-next ^O -Causes the current input line to be processed by the shell, and the next line -from history becomes the current line. -This is only useful after an -.Ic up-history -or -.Ic search-history . -.It Ic no-op QUIT -This does nothing. -.It Ic prefix-1 ^[ -Introduces a 2-character command sequence. -.It Ic prefix-2 ^X -.It Ic prefix-2 ^[[ -Introduces a 2-character command sequence. -.It Ic prev-hist-word Ar n Ic ^[\&. , ^{_ -The last -.Pq Ar n Ns th -word of the previous command is inserted at the cursor. -.It Ic quote ^^ -The following character is taken literally rather than as an editing command. -.It Ic redraw ^L -Reprints the prompt string and the current input line. -.It Ic search-character-backward Ar n Ic ^[^] -Search backward in the current line for the -.Ar n Ns th -occurrence of the next character typed. -.It Ic search-character-forward Ar n Ic ^] -Search forward in the current line for the -.Ar n Ns th -occurrence of the next character typed. -.It Ic search-history ^R -Enter incremental search mode. -The internal history list is searched -backwards for commands matching the input. -An initial -.Ql ^ -in the search string anchors the search. -The abort key will leave search mode. -Other commands will be executed after leaving search mode. -Successive -.Ic search-history -commands continue searching backward to the next previous occurrence of the -pattern. -The history buffer retains only a finite number of lines; the oldest -are discarded as necessary. -.It Ic set-mark-command ^[ Ns -Set the mark at the cursor position. -.It Ic stuff -On systems supporting it, pushes the bound character back onto the terminal -input where it may receive special processing by the terminal handler. -This is useful for the BRL ^T mini-systat feature, for example. -.It Ic stuff-reset -Acts like -.Ic stuff , -then aborts input the same as an interrupt. -.It Ic transpose-chars ^T -If at the end of line or if the -.Ic gmacs -option is set, this exchanges the two previous characters; otherwise, it -exchanges the previous and current characters and moves the cursor one -character to the right. -.It Ic up-history Ar n Ic ^P -Scrolls the history buffer backward -.Ar n -lines (earlier). -.It Ic upcase-word Ar n Ic ^[U , ^[u -Uppercase the next -.Ar n -words. -.It Ic version ^V -Display the version of -.Nm mksh . -The current edit buffer is restored as soon as any -key is pressed (the key is then processed, unless it is a space). -.It Ic yank ^Y -Inserts the most recently killed text string at the current cursor position. -.It Ic yank-pop ^[y -Immediately after a -.Ic yank , -replaces the inserted text string with the next previously killed text string. -.El -.Ss Vi editing mode -The vi command-line editor in -.Nm -has basically the same commands as the vi editor (see -.Xr vi 1 ) , -with the following exceptions: -.Bl -bullet -.It -You start out in insert mode. -.It -There are file name and command completion commands -.Po -.Ic = , \e , \&* , ^X , -.Ic ^E , ^F -and, optionally, -.Ic -.Pc . -.It -The -.Ic _ -command is different (in -.Nm -it is the last argument command, in vi it goes to -the start of the current line). -.It -The -.Ic / -and -.Ic G -commands move in the opposite direction as the -.Ic j -command. -.It -Commands which don't make sense in a single line editor are not available -(e.g., screen movement commands, -.Xr ex 1 Ns -style -colon -.Pq Ic \&: -commands, etc.). -.El -.Pp -Note that the ^X stands for control-X; also , and are used -for escape, space and tab, respectively (no kidding). -.Pp -Like vi, there are two modes \(em -.Dq insert -mode and -.Dq command -mode. -In insert mode, most characters are simply put in the buffer at the -current cursor position as they are typed; however, some characters are -treated specially. -In particular, the following characters are taken from current -.Xr tty 4 -settings (see -.Xr tty 1 ) -and have their usual meaning (normal values are in parentheses): kill (^U), -erase (^?), werase (^W), eof (^D), intr (^C) and quit (^\e). -In addition to -the above, the following characters are also treated specially in insert mode: -.Bl -tag -width 10n -.It Ic ^H -Erases previous character. -.It Ic ^V -Literal next. -The next character typed is not treated specially (can be used -to insert the characters being described here). -.It Ic ^J ^M -End of line. -The current line is read, parsed and executed by the shell. -.It Ic -Puts the editor in command mode (see below). -.It Ic ^E -Command and file name enumeration (see below). -.It Ic ^F -Command and file name completion (see below). -If used twice in a row, the -list of possible completions is displayed; if used a third time, the completion -is undone. -.It Ic ^X -Command and file name expansion (see below). -.It Ic -Optional file name and command completion (see -.Ic ^F -above), enabled with -.Ic set Fl o Ic vi-tabcomplete . -.El -.Pp -In command mode, each character is interpreted as a command. -Characters that -don't correspond to commands, are illegal combinations of commands or are -commands that can't be carried out all cause beeps. -In the following command descriptions, an -.Ar n -indicates the command may be prefixed by a number (e.g., -.Ic 10l -moves right 10 characters); if no number prefix is used, -.Ar n -is assumed to be 1 unless otherwise specified. -The term -.Dq current position -refers to the position between the cursor and the character preceding the -cursor. -A -.Dq word -is a sequence of letters, digits and underscore characters or a sequence of -non-letter, non-digit, non-underscore, non-whitespace characters (e.g., -.Dq ab2\&*\&&^ -contains two words) and a -.Dq big-word -is a sequence of non-whitespace characters. -.Pp -Special -.Nm -vi commands -.Pp -The following commands are not in, or are different from, the normal vi file -editor: -.Bl -tag -width 10n -.It Ar n Ns _ -Insert a space followed by the -.Ar n Ns th -big-word from the last command in the history at the current position and enter -insert mode; if -.Ar n -is not specified, the last word is inserted. -.It Ic \&# -Insert the comment character -.Pq Sq \&# -at the start of the current line and return the line to the shell (equivalent -to -.Ic \&I\&#^J ) . -.It Ar n Ns Ic g -Like -.Ic G , -except if -.Ar n -is not specified, it goes to the most recent remembered line. -.It Ar n Ns Ic v -Edit line -.Ar n -using the vi editor; if -.Ar n -is not specified, the current line is edited. -The actual command executed is -.Ic fc Fl e Ic ${VISUAL:-${EDITOR:-vi}} Ar n . -.It Ic \&* No and Ic ^X -Command or file name expansion is applied to the current big-word (with an -appended -.Ql * , -if the word contains no file globbing characters) \(em the big-word is replaced -with the resulting words. -If the current big-word is the first on the line (or -follows one of the characters -.Ql \&; , -.Ql | , -.Ql & , -.Ql ( -or -.Ql \&) ) -and does not contain a slash -.Pq Sq / -then the command expansion is done; otherwise file name expansion is done. -Command expansion will match the big-word against all aliases, functions and -built-in commands as well as any executable files found by searching the -directories in the -.Ev PATH -parameter. -File name expansion matches the big-word against the files in the -current directory. -After expansion, the cursor is placed just past the last -word and the editor is in insert mode. -.It Xo -.Ar n Ns Ic \e Ns , -.Ar n Ns Ic ^F , -.Ar n Ns Ic , -.No and -.Ar n Ns Ic -.Xc -Command/file name completion. -Replace the current big-word with the -longest unique match obtained after performing command and file name expansion. -.Ic -is only recognized if the -.Ic vi-tabcomplete -option is set, while -.Ic -is only recognized if the -.Ic vi-esccomplete -option is set (see -.Ic set Fl o ) . -If -.Ar n -is specified, the -.Ar n Ns th -possible completion is selected (as reported by the command/file name -enumeration command). -.It Ic \&= No and Ic ^E -Command/file name enumeration. -List all the commands or files that match the current big-word. -.It Ic ^V -Display the version of -.Nm -until another key is pressed (this key is ignored). -.It Ic @ Ns Ar c -Macro expansion. -Execute the commands found in the alias -.Ar c . -.El -.Pp -Intra-line movement commands: -.Bl -tag -width Ds -.It Xo Ar n Ns Ic h No and -.Ar n Ns Ic ^H -.Xc -Move left -.Ar n -characters. -.It Xo Ar n Ns Ic l No and -.Ar n Ns Ic -.Xc -Move right -.Ar n -characters. -.It Ic \&0 -Move to column 0. -.It Ic ^ -Move to the first non-whitespace character. -.It Ar n Ns Ic \&| -Move to column -.Ar n . -.It Ic $ -Move to the last character. -.It Ar n Ns Ic b -Move back -.Ar n -words. -.It Ar n Ns Ic B -Move back -.Ar n -big-words. -.It Ar n Ns Ic e -Move forward to the end of the word, -.Ar n -times. -.It Ar n Ns Ic E -Move forward to the end of the big-word, -.Ar n -times. -.It Ar n Ns Ic w -Move forward -.Ar n -words. -.It Ar n Ns Ic W -Move forward -.Ar n -big-words. -.It Ic % -Find match. -The editor looks forward for the nearest parenthesis, bracket or -brace and then moves the cursor to the matching parenthesis, bracket or brace. -.It Ar n Ns Ic f Ns Ar c -Move forward to the -.Ar n Ns th -occurrence of the character -.Ar c . -.It Ar n Ns Ic F Ns Ar c -Move backward to the -.Ar n Ns th -occurrence of the character -.Ar c . -.It Ar n Ns Ic t Ns Ar c -Move forward to just before the -.Ar n Ns th -occurrence of the character -.Ar c . -.It Ar n Ns Ic T Ns Ar c -Move backward to just before the -.Ar n Ns th -occurrence of the character -.Ar c . -.It Ar n Ns Ic \&; -Repeats the last -.Ic f , F , t -or -.Ic T -command. -.It Ar n Ns Ic \&, -Repeats the last -.Ic f , F , t -or -.Ic T -command, but moves in the opposite direction. -.El -.Pp -Inter-line movement commands: -.Bl -tag -width Ds -.It Xo -.Ar n Ns Ic j , -.Ar n Ns Ic + -.No and -.Ar n Ns Ic ^N -.Xc -Move to the -.Ar n Ns th -next line in the history. -.It Xo -.Ar n Ns Ic k , -.Ar n Ns Ic - -.No and -.Ar n Ns Ic ^P -.Xc -Move to the -.Ar n Ns th -previous line in the history. -.It Ar n Ns Ic G -Move to line -.Ar n -in the history; if -.Ar n -is not specified, the number of the first remembered line is used. -.It Ar n Ns Ic g -Like -.Ic G , -except if -.Ar n -is not specified, it goes to the most recent remembered line. -.It Ar n Ns Ic / Ns Ar string -Search backward through the history for the -.Ar n Ns th -line containing -.Ar string ; -if -.Ar string -starts with -.Ql ^ , -the remainder of the string must appear at the start of the history line for -it to match. -.It Ar n Ns Ic \&? Ns Ar string -Same as -.Ic / , -except it searches forward through the history. -.It Ar n Ns Ic n -Search for the -.Ar n Ns th -occurrence of the last search string; the directory of the search is the same -as the last search. -.It Ar n Ns Ic N -Search for the -.Ar n Ns th -occurrence of the last search string; the directory of the search is the -opposite of the last search. -.El -.Pp -Edit commands -.Bl -tag -width Ds -.It Ar n Ns Ic a -Append text -.Ar n -times; goes into insert mode just after the current position. -The append is -only replicated if command mode is re-entered (i.e., is used). -.It Ar n Ns Ic A -Same as -.Ic a , -except it appends at the end of the line. -.It Ar n Ns Ic i -Insert text -.Ar n -times; goes into insert mode at the current position. -The insertion is only -replicated if command mode is re-entered (i.e., is used). -.It Ar n Ns Ic I -Same as -.Ic i , -except the insertion is done just before the first non-blank character. -.It Ar n Ns Ic s -Substitute the next -.Ar n -characters (i.e., delete the characters and go into insert mode). -.It Ic S -Substitute whole line. -All characters from the first non-blank character to the -end of the line are deleted and insert mode is entered. -.It Ar n Ns Ic c Ns Ar move-cmd -Change from the current position to the position resulting from -.Ar n move-cmd Ns s -(i.e., delete the indicated region and go into insert mode); if -.Ar move-cmd -is -.Ic c , -the line starting from the first non-blank character is changed. -.It Ic C -Change from the current position to the end of the line (i.e., delete to the -end of the line and go into insert mode). -.It Ar n Ns Ic x -Delete the next -.Ar n -characters. -.It Ar n Ns Ic X -Delete the previous -.Ar n -characters. -.It Ic D -Delete to the end of the line. -.It Ar n Ns Ic d Ns Ar move-cmd -Delete from the current position to the position resulting from -.Ar n move-cmd Ns s ; -.Ar move-cmd -is a movement command (see above) or -.Ic d , -in which case the current line is deleted. -.It Ar n Ns Ic r Ns Ar c -Replace the next -.Ar n -characters with the character -.Ar c . -.It Ar n Ns Ic R -Replace. -Enter insert mode but overwrite existing characters instead of -inserting before existing characters. -The replacement is repeated -.Ar n -times. -.It Ar n Ns Ic \&~ -Change the case of the next -.Ar n -characters. -.It Ar n Ns Ic y Ns Ar move-cmd -Yank from the current position to the position resulting from -.Ar n move-cmd Ns s -into the yank buffer; if -.Ar move-cmd -is -.Ic y , -the whole line is yanked. -.It Ic Y -Yank from the current position to the end of the line. -.It Ar n Ns Ic p -Paste the contents of the yank buffer just after the current position, -.Ar n -times. -.It Ar n Ns Ic P -Same as -.Ic p , -except the buffer is pasted at the current position. -.El -.Pp -Miscellaneous vi commands -.Bl -tag -width Ds -.It Ic ^J No and Ic ^M -The current line is read, parsed and executed by the shell. -.It Ic ^L No and Ic ^R -Redraw the current line. -.It Ar n Ns Ic \&. -Redo the last edit command -.Ar n -times. -.It Ic u -Undo the last edit command. -.It Ic U -Undo all changes that have been made to the current line. -.It Ar intr No and Ar quit -The interrupt and quit terminal characters cause the current line to be -deleted and a new prompt to be printed. -.El -.Sh FILES -.Bl -tag -width "/etc/suid_profile" -compact -.It Pa ~/.profile -.It Pa /etc/profile -.It Pa /etc/suid_profile -.El -.Sh SEE ALSO -.Xr arc4random 1 , -.Xr awk 1 , -.Xr csh 1 , -.Xr ed 1 , -.Xr getconf 1 , -.Xr getopt 1 , -.Xr sed 1 , -.Xr sh 1 , -.Xr stty 1 , -.Xr vi 1 , -.Xr dup 2 , -.Xr execve 2 , -.Xr getgid 2 , -.Xr getuid 2 , -.Xr open 2 , -.Xr pipe 2 , -.Xr wait 2 , -.Xr getopt 3 , -.Xr rand 3 , -.Xr random 3 , -.Xr signal 3 , -.Xr srand 3 , -.Xr srandom 3 , -.Xr system 3 , -.Xr tty 4 , -.Xr environ 7 -.Pp -.Pa http://docsrv.sco.com:507/en/man/html.C/sh.C.html -.Pp -.Rs -.%A Morris Bolsky -.%A David Korn -.%T "The KornShell Command and Programming Language" -.%D 1983 -.%O "ISBN 0-13-516972-0" -.Re -.Rs -.%A Stephen G. Kochan -.%A Patrick H. Wood -.%T "UNIX Shell Programming" -.%O "Hayden" -.Re -.Rs -.%A "IEEE Inc." -.%T "IEEE Standard for Information Technology - Portable Operating System Interface (POSIX) - Part 2: Shell and Utilities" -.%D 1993 -.%O "ISBN 1-55937-266-9" -.Re -.Sh VERSION -This page documents version @(#)PD KSH v5.2.14 99/07/13.2 of the public -domain Korn shell, as delivered with -.Mx . -.Sh NOTES -.Nm sh -is implemented as a run-time option of -.Nm mksh , -with only those -.Nm ksh -features whose syntax or semantics are incompatible with a traditional Bourne -shell disabled. -Since this leaves some -.Nm ksh -extensions exposed, caution should be used where backwards compatibility with -traditional Bourne or -.Tn POSIX -compliant shells is an issue. -.Pp -.Nm mksh -is the name for the portable version of -.Mx -.Nm ksh -installed as -.Pa /bin/mksh -on other, foreign, operating systems. -Visit -.Pa http://wiki.mirbsd.de/MirbsdKsh -to obtain the latest version of -.Nm mksh . -.Sh AUTHORS -The -.Pa CONTRIBUTORS -file in the source distribution contains an almost complete list of people and -their part in the shell's development. -.Sh BUGS -Send bug reports for -.Nm -to the -.Mx -development team at -.Aq miros\-discuss@66h.42h.de . -Please include the version of -.Nm -.Po -.Ic print $KSH_VERSION -shows it -.Pc , -the machine, operating system and compiler you are using and how you built -.Nm -(it is recommended to use the provided -.Pa Build.sh -mechanism) -and a description of how to repeat the bug (a small shell script that -demonstrates the bug is best). -The following, if relevant (if you are not sure, include them), can also be -helpful: options you are using (both -.Pa options.h -and -.Ic set Fl o Ic options ) -and a copy of your -.Pa config.h -and -.Pa config.log -(the files generated by the -.Pa configure -script). -.Pp -By the way, the most frequently reported bug is: -.Bd -literal -offset indent -$ print hi | read a; print $a # Does not show hi -.Ed -.Pp -The -.Nm pdksh -author is aware of this and there is no need to report it. -For another known bug, refer to the comment above the -.Em complete-command -paragraph in the section -.Sx Emacs editing mode -above. diff --git a/ksh_stat.h b/ksh_stat.h deleted file mode 100644 index 1621790..0000000 --- a/ksh_stat.h +++ /dev/null @@ -1,71 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: ksh_stat.h,v 1.3 1996/10/01 02:05:39 downsj Exp $ */ - -#ifndef KSH_STAT_H -#define KSH_STAT_H - -/* Wrapper around the ugly sys/stat includes/ifdefs */ - -/* assumes already included */ -#include - -#ifndef HAVE_LSTAT -# define lstat(path, buf) stat(path, buf) -#endif /* HAVE_LSTAT */ - -#if defined(S_ISSOCK) && defined(S_IFIFO) -# if S_ISSOCK (S_IFIFO) -# define STAT_MACROS_BROKEN -# endif -#endif - -#ifdef STAT_MACROS_BROKEN -# undef S_ISREG -# undef S_ISDIR -# undef S_ISCHR -# undef S_ISBLK -# undef S_ISFIFO -# undef S_ISSOCK -# undef S_ISLNK -#endif /* STAT_MACROS_BROKEN */ - -#if !defined(S_ISREG) && defined(S_IFREG) -# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) -#endif /* S_ISREG */ -#if !defined(S_ISDIR) && defined(S_IFDIR) -# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) -#endif /* S_ISDIR */ -#if !defined(S_ISCHR) && defined(S_IFCHR) -# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) -#endif /* S_ISCHR */ -#if !defined(S_ISBLK) && defined(S_IFBLK) -# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) -#endif /* S_ISBLK */ -#if !defined(S_ISFIFO) && defined(S_IFIFO) -# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) -#endif /* S_ISFIFO */ -#if !defined(S_ISLNK) && defined(S_IFLNK) -# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) -#endif /* S_ISLNK */ -#if !defined(S_ISSOCK) && defined(S_IFSOCK) -# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) -#endif /* S_ISSOCK */ -#if !defined(S_ISCDF) && defined(S_CDF) -# define S_ISCDF(m) (S_ISDIR(m) && ((m) & S_CDF)) -#endif /* S_ISSOCK */ - -#ifndef S_ISVTX -# define S_ISVTX 01000 /* sticky bit */ -#endif /* S_ISVTX */ - -#ifndef S_IXUSR -# define S_IXUSR 00100 /* user execute bit */ -#endif /* S_IXUSR */ -#ifndef S_IXGRP -# define S_IXGRP 00010 /* user execute bit */ -#endif /* S_IXGRP */ -#ifndef S_IXOTH -# define S_IXOTH 00001 /* user execute bit */ -#endif /* S_IXOTH */ - -#endif /* ndef KSH_STAT_H */ diff --git a/ksh_wait.h b/ksh_wait.h deleted file mode 100644 index 43b7e89..0000000 --- a/ksh_wait.h +++ /dev/null @@ -1,57 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: ksh_wait.h,v 1.3 1997/06/19 13:58:43 kstailey Exp $ */ - -#ifndef KSH_WAIT_H -#define KSH_WAIT_H - -/* Wrapper around the ugly sys/wait includes/ifdefs */ - -#ifdef HAVE_SYS_WAIT_H -# include -#endif - -#ifndef POSIX_SYS_WAIT -/* Get rid of system macros (which probably use union wait) */ -# undef WIFCORED -# undef WIFEXITED -# undef WEXITSTATUS -# undef WIFSIGNALED -# undef WTERMSIG -# undef WIFSTOPPED -# undef WSTOPSIG -#endif /* POSIX_SYS_WAIT */ - -typedef int WAIT_T; - -#ifndef WIFCORED -# define WIFCORED(s) ((s) & 0x80) -#endif -#define WSTATUS(s) (s) - -#ifndef WIFEXITED -# define WIFEXITED(s) (((s) & 0xff) == 0) -#endif -#ifndef WEXITSTATUS -# define WEXITSTATUS(s) (((s) >> 8) & 0xff) -#endif -#ifndef WIFSIGNALED -# define WIFSIGNALED(s) (((s) & 0xff) != 0 && ((s) & 0xff) != 0x7f) -#endif -#ifndef WTERMSIG -# define WTERMSIG(s) ((s) & 0x7f) -#endif -#ifndef WIFSTOPPED -# define WIFSTOPPED(s) (((s) & 0xff) == 0x7f) -#endif -#ifndef WSTOPSIG -# define WSTOPSIG(s) (((s) >> 8) & 0xff) -#endif - -#if !defined(HAVE_WAITPID) && defined(HAVE_WAIT3) - /* always used with p == -1 */ -# define ksh_waitpid(p, s, o) wait3((s), (o), NULL) -#else /* !HAVE_WAITPID && HAVE_WAIT3 */ -# define ksh_waitpid(p, s, o) waitpid((p), (s), (o)) -#endif /* !HAVE_WAITPID && HAVE_WAIT3 */ - -#endif /* ndef KSH_WAIT_H */ diff --git a/lex.c b/lex.c deleted file mode 100644 index 0f7ae3b..0000000 --- a/lex.c +++ /dev/null @@ -1,1301 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: lex.c,v 1.30 2004/12/22 18:57:28 otto Exp $ */ - -/* - * lexical analysis and source input - */ - -#include "sh.h" -#include - -__RCSID("$MirOS$"); - -/* Structure to keep track of the lexing state and the various pieces of info - * needed for each particular state. - */ -typedef struct lex_state Lex_state; -struct lex_state { - int ls_state; - union { - /* $(...) */ - struct scsparen_info { - int nparen; /* count open parenthesis */ - int csstate; /* XXX remove */ -#define ls_scsparen ls_info.u_scsparen - } u_scsparen; - - /* $((...)) */ - struct sasparen_info { - int nparen; /* count open parenthesis */ - int start; /* marks start of $(( in output str */ -#define ls_sasparen ls_info.u_sasparen - } u_sasparen; - - /* ((...)) */ - struct sletparen_info { - int nparen; /* count open parenthesis */ -#define ls_sletparen ls_info.u_sletparen - } u_sletparen; - - /* `...` */ - struct sbquote_info { - int indquotes; /* true if in double quotes: "`...`" */ -#define ls_sbquote ls_info.u_sbquote - } u_sbquote; - - Lex_state *base; /* used to point to next state block */ - } ls_info; -}; - -typedef struct State_info State_info; -struct State_info { - Lex_state *base; - Lex_state *end; -}; - - -static void readhere(struct ioword *iop); -static int getsc__(void); -static void getsc_line(Source *s); -static int getsc_bn(void); -static char *get_brace_var(XString *wsp, char *wp); -static int arraysub(char **strp); -static const char *ungetsc(int c); -static void gethere(void); -static Lex_state *push_state_(State_info *si, Lex_state *old_end); -static Lex_state *pop_state_(State_info *si, Lex_state *old_end); - -static int backslash_skip; -static int ignore_backslash_newline; - -/* optimized getsc_bn() */ -#define getsc() (*source->str != '\0' && *source->str != '\\' \ - && !backslash_skip ? *source->str++ : getsc_bn()) -/* optimized getsc__() */ -#define getsc_() ((*source->str != '\0') ? *source->str++ : getsc__()) - -#define STATE_BSIZE 32 - -#define PUSH_STATE(s) do { \ - if (++statep == state_info.end) \ - statep = push_state_(&state_info, statep); \ - state = statep->ls_state = (s); \ - } while (0) - -#define POP_STATE() do { \ - if (--statep == state_info.base) \ - statep = pop_state_(&state_info, statep); \ - state = statep->ls_state; \ - } while (0) - - - -/* - * Lexical analyzer - * - * tokens are not regular expressions, they are LL(1). - * for example, "${var:-${PWD}}", and "$(size $(whence ksh))". - * hence the state stack. - */ - -int -yylex(int cf) -{ - Lex_state states[STATE_BSIZE], *statep; - State_info state_info; - int c, state; - XString ws; /* expandable output word */ - char *wp; /* output word pointer */ - char *sp, *dp; - int c2; - - - Again: - states[0].ls_state = -1; - states[0].ls_info.base = NULL; - statep = &states[1]; - state_info.base = states; - state_info.end = &states[STATE_BSIZE]; - - Xinit(ws, wp, 64, ATEMP); - - backslash_skip = 0; - ignore_backslash_newline = 0; - - if (cf&ONEWORD) - state = SWORD; - else if (cf&LETEXPR) { - *wp++ = OQUOTE; /* enclose arguments in (double) quotes */ - state = SLETPAREN; - statep->ls_sletparen.nparen = 0; - } else { /* normal lexing */ - state = (cf & HEREDELIM) ? SHEREDELIM : SBASE; - while ((c = getsc()) == ' ' || c == '\t') - ; - if (c == '#') { - ignore_backslash_newline++; - while ((c = getsc()) != '\0' && c != '\n') - ; - ignore_backslash_newline--; - } - ungetsc(c); - } - if (source->flags & SF_ALIAS) { /* trailing ' ' in alias definition */ - source->flags &= ~SF_ALIAS; - /* In POSIX mode, a trailing space only counts if we are - * parsing a simple command - */ - if (!Flag(FPOSIX) || (cf & CMDWORD)) - cf |= ALIAS; - } - - /* Initial state: one of SBASE SHEREDELIM SWORD SASPAREN */ - statep->ls_state = state; - - /* collect non-special or quoted characters to form word */ - while (!((c = getsc()) == 0 - || ((state == SBASE || state == SHEREDELIM) - && ctype(c, C_LEX1)))) - { - Xcheck(ws, wp); - switch (state) { - case SBASE: - if (c == '[' && (cf & (VARASN|ARRAYVAR))) { - *wp = EOS; /* temporary */ - if (is_wdvarname(Xstring(ws, wp), false)) - { - char *p, *tmp; - - if (arraysub(&tmp)) { - *wp++ = CHAR; - *wp++ = c; - for (p = tmp; *p; ) { - Xcheck(ws, wp); - *wp++ = CHAR; - *wp++ = *p++; - } - afree(tmp, ATEMP); - break; - } else { - Source *s; - - s = pushs(SREREAD, - source->areap); - s->start = s->str - = s->u.freeme = tmp; - s->next = source; - source = s; - } - } - *wp++ = CHAR; - *wp++ = c; - break; - } - /* fall through.. */ - Sbase1: /* includes *(...|...) pattern (*+?@!) */ - if (c == '*' || c == '@' || c == '+' || c == '?' - || c == '!') - { - c2 = getsc(); - if (c2 == '(' /*)*/ ) { - *wp++ = OPAT; - *wp++ = c; - PUSH_STATE(SPATTERN); - break; - } - ungetsc(c2); - } - /* fall through.. */ - Sbase2: /* doesn't include *(...|...) pattern (*+?@!) */ - switch (c) { - case '\\': - c = getsc(); - if (c) /* trailing \ is lost */ - *wp++ = QCHAR, *wp++ = c; - break; - case '\'': - *wp++ = OQUOTE; - ignore_backslash_newline++; - PUSH_STATE(SSQUOTE); - break; - case '"': - *wp++ = OQUOTE; - PUSH_STATE(SDQUOTE); - break; - default: - goto Subst; - } - break; - - Subst: - switch (c) { - case '\\': - c = getsc(); - switch (c) { - case '"': case '\\': - case '$': case '`': - *wp++ = QCHAR, *wp++ = c; - break; - default: - Xcheck(ws, wp); - if (c) { /* trailing \ is lost */ - *wp++ = CHAR, *wp++ = '\\'; - *wp++ = CHAR, *wp++ = c; - } - break; - } - break; - case '$': - c = getsc(); - if (c == '(') /*)*/ { - c = getsc(); - if (c == '(') /*)*/ { - PUSH_STATE(SASPAREN); - statep->ls_sasparen.nparen = 2; - statep->ls_sasparen.start = - Xsavepos(ws, wp); - *wp++ = EXPRSUB; - } else { - ungetsc(c); - PUSH_STATE(SCSPAREN); - statep->ls_scsparen.nparen = 1; - statep->ls_scsparen.csstate = 0; - *wp++ = COMSUB; - } - } else if (c == '{') /*}*/ { - *wp++ = OSUBST; - *wp++ = '{'; /*}*/ - wp = get_brace_var(&ws, wp); - c = getsc(); - /* allow :# and :% (ksh88 compat) */ - if (c == ':') { - *wp++ = CHAR, *wp++ = c; - c = getsc(); - } - /* If this is a trim operation, - * treat (,|,) specially in STBRACE. - */ - if (c == '#' || c == '%') { - ungetsc(c); - PUSH_STATE(STBRACE); - } else { - ungetsc(c); - PUSH_STATE(SBRACE); - } - } else if (ctype(c, C_ALPHA)) { - *wp++ = OSUBST; - *wp++ = 'X'; - do { - Xcheck(ws, wp); - *wp++ = c; - c = getsc(); - } while (ctype(c, C_ALPHA|C_DIGIT)); - *wp++ = '\0'; - *wp++ = CSUBST; - *wp++ = 'X'; - ungetsc(c); - } else if (ctype(c, C_DIGIT|C_VAR1)) { - Xcheck(ws, wp); - *wp++ = OSUBST; - *wp++ = 'X'; - *wp++ = c; - *wp++ = '\0'; - *wp++ = CSUBST; - *wp++ = 'X'; - } else { - *wp++ = CHAR, *wp++ = '$'; - ungetsc(c); - } - break; - case '`': - PUSH_STATE(SBQUOTE); - *wp++ = COMSUB; - /* Need to know if we are inside double quotes - * since sh/at&t-ksh translate the \" to " in - * "`..\"..`". - * This is not done in posix mode (section - * 3.2.3, Double Quotes: "The backquote shall - * retain its special meaning introducing the - * other form of command substitution (see - * 3.6.3). The portion of the quoted string - * from the initial backquote and the - * characters up to the next backquote that - * is not preceded by a backslash (having - * escape characters removed) defines that - * command whose output replaces `...` when - * the word is expanded." - * Section 3.6.3, Command Substitution: - * "Within the backquoted style of command - * substitution, backslash shall retain its - * literal meaning, except when followed by - * $ ` \."). - */ - statep->ls_sbquote.indquotes = 0; - if (!Flag(FPOSIX)) { - Lex_state *s = statep; - Lex_state *base = state_info.base; - while (1) { - for (; s != base; s--) { - if (s->ls_state == SDQUOTE) { - statep->ls_sbquote.indquotes = 1; - break; - } - } - if (s != base) - break; - if (!(s = s->ls_info.base)) - break; - base = s-- - STATE_BSIZE; - } - } - break; - default: - *wp++ = CHAR, *wp++ = c; - } - break; - - case SSQUOTE: - if (c == '\'') { - POP_STATE(); - *wp++ = CQUOTE; - ignore_backslash_newline--; - } else - *wp++ = QCHAR, *wp++ = c; - break; - - case SDQUOTE: - if (c == '"') { - POP_STATE(); - *wp++ = CQUOTE; - } else - goto Subst; - break; - - case SCSPAREN: /* $( .. ) */ - /* todo: deal with $(...) quoting properly - * kludge to partly fake quoting inside $(..): doesn't - * really work because nested $(..) or ${..} inside - * double quotes aren't dealt with. - */ - switch (statep->ls_scsparen.csstate) { - case 0: /* normal */ - switch (c) { - case '(': - statep->ls_scsparen.nparen++; - break; - case ')': - statep->ls_scsparen.nparen--; - break; - case '\\': - statep->ls_scsparen.csstate = 1; - break; - case '"': - statep->ls_scsparen.csstate = 2; - break; - case '\'': - statep->ls_scsparen.csstate = 4; - ignore_backslash_newline++; - break; - } - break; - - case 1: /* backslash in normal mode */ - case 3: /* backslash in double quotes */ - --statep->ls_scsparen.csstate; - break; - - case 2: /* double quotes */ - if (c == '"') - statep->ls_scsparen.csstate = 0; - else if (c == '\\') - statep->ls_scsparen.csstate = 3; - break; - - case 4: /* single quotes */ - if (c == '\'') { - statep->ls_scsparen.csstate = 0; - ignore_backslash_newline--; - } - break; - } - if (statep->ls_scsparen.nparen == 0) { - POP_STATE(); - *wp++ = 0; /* end of COMSUB */ - } else - *wp++ = c; - break; - - case SASPAREN: /* $(( .. )) */ - /* todo: deal with $((...); (...)) properly */ - /* XXX should nest using existing state machine - * (embed "..", $(...), etc.) */ - if (c == '(') - statep->ls_sasparen.nparen++; - else if (c == ')') { - statep->ls_sasparen.nparen--; - if (statep->ls_sasparen.nparen == 1) { - /*(*/ - if ((c2 = getsc()) == ')') { - POP_STATE(); - *wp++ = 0; /* end of EXPRSUB */ - break; - } else { - char *s; - - ungetsc(c2); - /* mismatched parenthesis - - * assume we were really - * parsing a $(..) expression - */ - s = Xrestpos(ws, wp, - statep->ls_sasparen.start); - memmove(s + 1, s, wp - s); - *s++ = COMSUB; - *s = '('; /*)*/ - wp++; - statep->ls_scsparen.nparen = 1; - statep->ls_scsparen.csstate = 0; - state = statep->ls_state - = SCSPAREN; - - } - } - } - *wp++ = c; - break; - - case SBRACE: - /*{*/ - if (c == '}') { - POP_STATE(); - *wp++ = CSUBST; - *wp++ = /*{*/ '}'; - } else - goto Sbase1; - break; - - case STBRACE: - /* Same as SBRACE, except (,|,) treated specially */ - /*{*/ - if (c == '}') { - POP_STATE(); - *wp++ = CSUBST; - *wp++ = /*{*/ '}'; - } else if (c == '|') { - *wp++ = SPAT; - } else if (c == '(') { - *wp++ = OPAT; - *wp++ = ' '; /* simile for @ */ - PUSH_STATE(SPATTERN); - } else - goto Sbase1; - break; - - case SBQUOTE: - if (c == '`') { - *wp++ = 0; - POP_STATE(); - } else if (c == '\\') { - switch (c = getsc()) { - case '\\': - case '$': case '`': - *wp++ = c; - break; - case '"': - if (statep->ls_sbquote.indquotes) { - *wp++ = c; - break; - } - /* fall through.. */ - default: - if (c) { /* trailing \ is lost */ - *wp++ = '\\'; - *wp++ = c; - } - break; - } - } else - *wp++ = c; - break; - - case SWORD: /* ONEWORD */ - goto Subst; - - case SLETPAREN: /* LETEXPR: (( ... )) */ - /*(*/ - if (c == ')') { - if (statep->ls_sletparen.nparen > 0) - --statep->ls_sletparen.nparen; - /*(*/ - else if ((c2 = getsc()) == ')') { - c = 0; - *wp++ = CQUOTE; - goto Done; - } else - ungetsc(c2); - } else if (c == '(') - /* parenthesis inside quotes and backslashes - * are lost, but at&t ksh doesn't count them - * either - */ - ++statep->ls_sletparen.nparen; - goto Sbase2; - - case SHEREDELIM: /* <<,<<- delimiter */ - /* XXX chuck this state (and the next) - use - * the existing states ($ and \`..` should be - * stripped of their specialness after the - * fact). - */ - /* here delimiters need a special case since - * $ and `..` are not to be treated specially - */ - if (c == '\\') { - c = getsc(); - if (c) { /* trailing \ is lost */ - *wp++ = QCHAR; - *wp++ = c; - } - } else if (c == '\'') { - PUSH_STATE(SSQUOTE); - *wp++ = OQUOTE; - ignore_backslash_newline++; - } else if (c == '"') { - state = statep->ls_state = SHEREDQUOTE; - *wp++ = OQUOTE; - } else { - *wp++ = CHAR; - *wp++ = c; - } - break; - - case SHEREDQUOTE: /* " in <<,<<- delimiter */ - if (c == '"') { - *wp++ = CQUOTE; - state = statep->ls_state = SHEREDELIM; - } else { - if (c == '\\') { - switch (c = getsc()) { - case '\\': case '"': - case '$': case '`': - break; - default: - if (c) { /* trailing \ lost */ - *wp++ = CHAR; - *wp++ = '\\'; - } - break; - } - } - *wp++ = CHAR; - *wp++ = c; - } - break; - - case SPATTERN: /* in *(...|...) pattern (*+?@!) */ - if ( /*(*/ c == ')') { - *wp++ = CPAT; - POP_STATE(); - } else if (c == '|') { - *wp++ = SPAT; - } else if (c == '(') { - *wp++ = OPAT; - *wp++ = ' '; /* simile for @ */ - PUSH_STATE(SPATTERN); - } else - goto Sbase1; - break; - } - } -Done: - Xcheck(ws, wp); - if (statep != &states[1]) - /* XXX figure out what is missing */ - yyerror("no closing quote\n"); - - /* This done to avoid tests for SHEREDELIM wherever SBASE tested */ - if (state == SHEREDELIM) - state = SBASE; - - dp = Xstring(ws, wp); - if ((c == '<' || c == '>') && state == SBASE - && ((c2 = Xlength(ws, wp)) == 0 - || (c2 == 2 && dp[0] == CHAR && digit(dp[1])))) - { - struct ioword *iop = - (struct ioword *) alloc(sizeof(*iop), ATEMP); - - if (c2 == 2) - iop->unit = dp[1] - '0'; - else - iop->unit = c == '>'; /* 0 for <, 1 for > */ - - c2 = getsc(); - /* <<, >>, <> are ok, >< is not */ - if (c == c2 || (c == '<' && c2 == '>')) { - iop->flag = c == c2 ? - (c == '>' ? IOCAT : IOHERE) : IORDWR; - if (iop->flag == IOHERE) { - if ((c2 = getsc()) == '-') - iop->flag |= IOSKIP; - else - ungetsc(c2); - } - } else if (c2 == '&') - iop->flag = IODUP | (c == '<' ? IORDUP : 0); - else { - iop->flag = c == '>' ? IOWRITE : IOREAD; - if (c == '>' && c2 == '|') - iop->flag |= IOCLOB; - else - ungetsc(c2); - } - - iop->name = NULL; - iop->delim = NULL; - iop->heredoc = NULL; - Xfree(ws, wp); /* free word */ - yylval.iop = iop; - return REDIR; - } - - if (wp == dp && state == SBASE) { - Xfree(ws, wp); /* free word */ - /* no word, process LEX1 character */ - switch (c) { - default: - return c; - - case '|': - case '&': - case ';': - if ((c2 = getsc()) == c) - c = (c == ';') ? BREAK : - (c == '|') ? LOGOR : - (c == '&') ? LOGAND : - YYERRCODE; - else if (c == '|' && c2 == '&') - c = COPROC; - else - ungetsc(c2); - return c; - - case '\n': - gethere(); - if (cf & CONTIN) - goto Again; - return c; - - case '(': /*)*/ - if (!Flag(FSH)) { - if ((c2 = getsc()) == '(') /*)*/ - /* XXX need to handle ((...); (...)) */ - c = MDPAREN; - else - ungetsc(c2); - } - return c; - /*(*/ - case ')': - return c; - } - } - - *wp++ = EOS; /* terminate word */ - yylval.cp = Xclose(ws, wp); - if (state == SWORD || state == SLETPAREN) - /* ONEWORD? */ - return LWORD; - ungetsc(c); /* unget terminator */ - - /* copy word to unprefixed string ident */ - for (sp = yylval.cp, dp = ident; dp < ident+IDENT && (c = *sp++) == CHAR; ) - *dp++ = *sp++; - /* Make sure the ident array stays '\0' padded */ - memset(dp, 0, (ident+IDENT) - dp + 1); - if (c != EOS) - *ident = '\0'; /* word is not unquoted */ - - if (*ident != '\0' && (cf&(KEYWORD|ALIAS))) { - struct tbl *p; - int h = hash(ident); - - /* { */ - if ((cf & KEYWORD) && (p = tsearch(&keywords, ident, h)) - && (!(cf & ESACONLY) || p->val.i == ESAC || p->val.i == '}')) - { - afree(yylval.cp, ATEMP); - return p->val.i; - } - if ((cf & ALIAS) && (p = tsearch(&aliases, ident, h)) - && (p->flag & ISSET)) - { - Source *s; - - for (s = source; s->type == SALIAS; s = s->next) - if (s->u.tblp == p) - return LWORD; - /* push alias expansion */ - s = pushs(SALIAS, source->areap); - s->start = s->str = p->val.s; - s->u.tblp = p; - s->next = source; - source = s; - afree(yylval.cp, ATEMP); - goto Again; - } - } - - return LWORD; -} - -static void -gethere(void) -{ - struct ioword **p; - - for (p = heres; p < herep; p++) - readhere(*p); - herep = heres; -} - -/* - * read "<delim, 0); - - if (!(iop->flag & IOEVAL)) - ignore_backslash_newline++; - - Xinit(xs, xp, 256, ATEMP); - - for (;;) { - eofp = eof; - skiptabs = iop->flag & IOSKIP; - xpos = Xsavepos(xs, xp); - while ((c = getsc()) != 0) { - if (skiptabs) { - if (c == '\t') - continue; - skiptabs = 0; - } - if (c != *eofp) - break; - Xcheck(xs, xp); - Xput(xs, xp, c); - eofp++; - } - /* Allow EOF here so commands with out trailing newlines - * will work (eg, ksh -c '...', $(...), etc). - */ - if (*eofp == '\0' && (c == 0 || c == '\n')) { - xp = Xrestpos(xs, xp, xpos); - break; - } - ungetsc(c); - while ((c = getsc()) != '\n') { - if (c == 0) - yyerror("here document '%s' unclosed\n", eof); - Xcheck(xs, xp); - Xput(xs, xp, c); - } - Xcheck(xs, xp); - Xput(xs, xp, c); - } - Xput(xs, xp, '\0'); - iop->heredoc = Xclose(xs, xp); - - if (!(iop->flag & IOEVAL)) - ignore_backslash_newline--; -} - -void -yyerror(const char *fmt, ...) -{ - va_list va; - - /* pop aliases and re-reads */ - while (source->type == SALIAS || source->type == SREREAD) - source = source->next; - source->str = null; /* zap pending input */ - - error_prefix(true); - SH_VA_START(va, fmt); - shf_vfprintf(shl_out, fmt, va); - va_end(va); - errorf(null); -} - -/* - * input for yylex with alias expansion - */ - -Source * -pushs(int type, Area *areap) -{ - Source *s; - - s = (Source *) alloc(sizeof(Source), areap); - s->type = type; - s->str = null; - s->start = NULL; - s->line = 0; - s->errline = 0; - s->file = NULL; - s->flags = 0; - s->next = NULL; - s->areap = areap; - if (type == SFILE || type == SSTDIN) { - char *dummy; - Xinit(s->xs, dummy, 256, s->areap); - } else - memset(&s->xs, 0, sizeof(s->xs)); - return s; -} - -static int -getsc__(void) -{ - Source *s = source; - int c; - - while ((c = *s->str++) == 0) { - s->str = NULL; /* return 0 for EOF by default */ - switch (s->type) { - case SEOF: - s->str = null; - return 0; - - case SSTDIN: - case SFILE: - getsc_line(s); - break; - - case SWSTR: - break; - - case SSTRING: - break; - - case SWORDS: - s->start = s->str = *s->u.strv++; - s->type = SWORDSEP; - break; - - case SWORDSEP: - if (*s->u.strv == NULL) { - s->start = s->str = newline; - s->type = SEOF; - } else { - s->start = s->str = space; - s->type = SWORDS; - } - break; - - case SALIAS: - if (s->flags & SF_ALIASEND) { - /* pass on an unused SF_ALIAS flag */ - source = s->next; - source->flags |= s->flags & SF_ALIAS; - s = source; - } else if (*s->u.tblp->val.s - && isspace(strchr(s->u.tblp->val.s, 0)[-1])) - { - source = s = s->next; /* pop source stack */ - /* Note that this alias ended with a space, - * enabling alias expansion on the following - * word. - */ - s->flags |= SF_ALIAS; - } else { - /* At this point, we need to keep the current - * alias in the source list so recursive - * aliases can be detected and we also need - * to return the next character. Do this - * by temporarily popping the alias to get - * the next character and then put it back - * in the source list with the SF_ALIASEND - * flag set. - */ - source = s->next; /* pop source stack */ - source->flags |= s->flags & SF_ALIAS; - c = getsc__(); - if (c) { - s->flags |= SF_ALIASEND; - s->ugbuf[0] = c; s->ugbuf[1] = '\0'; - s->start = s->str = s->ugbuf; - s->next = source; - source = s; - } else { - s = source; - /* avoid reading eof twice */ - s->str = NULL; - break; - } - } - continue; - - case SREREAD: - if (s->start != s->ugbuf) /* yuck */ - afree(s->u.freeme, ATEMP); - source = s = s->next; - continue; - } - if (s->str == NULL) { - s->type = SEOF; - s->start = s->str = null; - return '\0'; - } - if (s->flags & SF_ECHO) { - shf_puts(s->str, shl_out); - shf_flush(shl_out); - } - } - return c; -} - -static void -getsc_line(Source *s) -{ - char *xp = Xstring(s->xs, xp); - int interactive = Flag(FTALKING) && s->type == SSTDIN; - int have_tty = interactive && (s->flags & SF_TTY); - - /* Done here to ensure nothing odd happens when a timeout occurs */ - XcheckN(s->xs, xp, LINE); - *xp = '\0'; - s->start = s->str = xp; - - if (have_tty && ksh_tmout) { - ksh_tmout_state = TMOUT_READING; - alarm(ksh_tmout); - } - if (have_tty && (Flag(FVI) || Flag(FEMACS) || Flag(FGMACS))) { - int nread; - - nread = x_read(xp, LINE); - if (nread < 0) /* read error */ - nread = 0; - xp[nread] = '\0'; - xp += nread; - } else { - if (interactive) { - pprompt(prompt, 0); - } else - s->line++; - - while (1) { - char *p = shf_getse(xp, Xnleft(s->xs, xp), s->u.shf); - - if (!p && shf_error(s->u.shf) - && shf_errno(s->u.shf) == EINTR) - { - shf_clearerr(s->u.shf); - if (trap) - runtraps(0); - continue; - } - if (!p || (xp = p, xp[-1] == '\n')) - break; - /* double buffer size */ - xp++; /* move past null so doubling works... */ - XcheckN(s->xs, xp, Xlength(s->xs, xp)); - xp--; /* ...and move back again */ - } - /* flush any unwanted input so other programs/builtins - * can read it. Not very optimal, but less error prone - * than flushing else where, dealing with redirections, - * etc.. - * todo: reduce size of shf buffer (~128?) if SSTDIN - */ - if (s->type == SSTDIN) - shf_flush(s->u.shf); - } - /* XXX: temporary kludge to restore source after a - * trap may have been executed. - */ - source = s; - if (have_tty && ksh_tmout) - { - ksh_tmout_state = TMOUT_EXECUTING; - alarm(0); - } - s->start = s->str = Xstring(s->xs, xp); - strip_nuls(Xstring(s->xs, xp), Xlength(s->xs, xp)); - /* Note: if input is all nulls, this is not eof */ - if (Xlength(s->xs, xp) == 0) { /* EOF */ - if (s->type == SFILE) - shf_fdclose(s->u.shf); - s->str = NULL; - } else if (interactive) { - char *p = Xstring(s->xs, xp); - if (cur_prompt == PS1) - while (*p && ctype(*p, C_IFS) && ctype(*p, C_IFSWS)) - p++; - if (*p) { -#ifdef EASY_HISTORY - if (cur_prompt == PS2) - histappend(Xstring(s->xs, xp), 1); - else -#endif /* EASY_HISTORY */ - { - s->line++; - histsave(s->line, s->str, 1); - } - } - } - if (interactive) - set_prompt(PS2, NULL); -} - -void -set_prompt(int to, Source *s) -{ - cur_prompt = to; - - switch (to) { - case PS1: /* command */ - /* Substitute ! and !! here, before substitutions are done - * so ! in expanded variables are not expanded. - * NOTE: this is not what at&t ksh does (it does it after - * substitutions, POSIX doesn't say which is to be done. - */ - { - struct shf *shf; - char * volatile ps1; - Area *saved_atemp; - - ps1 = str_val(global("PS1")); - shf = shf_sopen(NULL, strlen(ps1) * 2, - SHF_WR | SHF_DYNAMIC, NULL); - while (*ps1) { - if (*ps1 != '!' || *++ps1 == '!') - shf_putchar(*ps1++, shf); - else - shf_fprintf(shf, "%d", - s ? s->line + 1 : 0); - } - ps1 = shf_sclose(shf); - saved_atemp = ATEMP; - newenv(E_ERRH); - if (ksh_sigsetjmp(e->jbuf, 0)) { - prompt = safe_prompt; - /* Don't print an error - assume it has already - * been printed. Reason is we may have forked - * to run a command and the child may be - * unwinding its stack through this code as it - * exits. - */ - } else - prompt = str_save(substitute(ps1, 0), - saved_atemp); - quitenv(NULL); - } - break; - - case PS2: /* command continuation */ - prompt = str_val(global("PS2")); - break; - } -} - -/* See also related routine, promptlen() in edit.c */ -void -pprompt(const char *cp, int ntruncate) -{ - shf_puts(cp + ntruncate, shl_out); - shf_flush(shl_out); -} - -/* Read the variable part of a ${...} expression (ie, up to but not including - * the :[-+?=#%] or close-brace. - */ -static char * -get_brace_var(XString *wsp, char *wp) -{ - enum parse_state { - PS_INITIAL, PS_SAW_HASH, PS_IDENT, - PS_NUMBER, PS_VAR1, PS_END - } - state; - char c; - - state = PS_INITIAL; - while (1) { - c = getsc(); - /* State machine to figure out where the variable part ends. */ - switch (state) { - case PS_INITIAL: - if (c == '#') { - state = PS_SAW_HASH; - break; - } - /* fall through.. */ - case PS_SAW_HASH: - if (letter(c)) - state = PS_IDENT; - else if (digit(c)) - state = PS_NUMBER; - else if (ctype(c, C_VAR1)) - state = PS_VAR1; - else - state = PS_END; - break; - case PS_IDENT: - if (!letnum(c)) { - state = PS_END; - if (c == '[') { - char *tmp, *p; - - if (!arraysub(&tmp)) - yyerror("missing ]\n"); - *wp++ = c; - for (p = tmp; *p; ) { - Xcheck(*wsp, wp); - *wp++ = *p++; - } - afree(tmp, ATEMP); - c = getsc(); /* the ] */ - } - } - break; - case PS_NUMBER: - if (!digit(c)) - state = PS_END; - break; - case PS_VAR1: - state = PS_END; - break; - case PS_END: /* keep gcc happy */ - break; - } - if (state == PS_END) { - *wp++ = '\0'; /* end of variable part */ - ungetsc(c); - break; - } - Xcheck(*wsp, wp); - *wp++ = c; - } - return wp; -} - -/* - * Save an array subscript - returns true if matching bracket found, false - * if eof or newline was found. - * (Returned string double null terminated) - */ -static int -arraysub(char **strp) -{ - XString ws; - char *wp; - char c; - int depth = 1; /* we are just past the initial [ */ - - Xinit(ws, wp, 32, ATEMP); - - do { - c = getsc(); - Xcheck(ws, wp); - *wp++ = c; - if (c == '[') - depth++; - else if (c == ']') - depth--; - } while (depth > 0 && c && c != '\n'); - - *wp++ = '\0'; - *strp = Xclose(ws, wp); - - return depth == 0 ? 1 : 0; -} - -/* Unget a char: handles case when we are already at the start of the buffer */ -static const char * -ungetsc(int c) -{ - if (backslash_skip) - backslash_skip--; - /* Don't unget eof... */ - if (source->str == null && c == '\0') - return source->str; - if (source->str > source->start) - source->str--; - else { - Source *s; - - s = pushs(SREREAD, source->areap); - s->ugbuf[0] = c; s->ugbuf[1] = '\0'; - s->start = s->str = s->ugbuf; - s->next = source; - source = s; - } - return source->str; -} - - -/* Called to get a char that isn't a \newline sequence. */ -static int -getsc_bn(void) -{ - int c, c2; - - if (ignore_backslash_newline) - return getsc_(); - - if (backslash_skip == 1) { - backslash_skip = 2; - return getsc_(); - } - - backslash_skip = 0; - - while (1) { - c = getsc_(); - if (c == '\\') { - if ((c2 = getsc_()) == '\n') - /* ignore the \newline; get the next char... */ - continue; - ungetsc(c2); - backslash_skip = 1; - } - return c; - } -} - -static Lex_state * -push_state_(State_info *si, Lex_state *old_end) -{ - Lex_state *new = alloc(sizeof(Lex_state) * STATE_BSIZE, ATEMP); - - new[0].ls_info.base = old_end; - si->base = &new[0]; - si->end = &new[STATE_BSIZE]; - return &new[1]; -} - -static Lex_state * -pop_state_(State_info *si, Lex_state *old_end) -{ - Lex_state *old_base = si->base; - - si->base = old_end->ls_info.base - STATE_BSIZE; - si->end = old_end->ls_info.base; - - afree(old_base, ATEMP); - - return si->base + STATE_BSIZE - 1; -} diff --git a/lex.h b/lex.h deleted file mode 100644 index 1ebe592..0000000 --- a/lex.h +++ /dev/null @@ -1,131 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: lex.h,v 1.8 2004/11/02 22:09:24 deraadt Exp $ */ -/* $From: lex.h,v 1.4 1994/05/31 13:34:34 michael Exp $ */ - -#ifndef LEX_H -#define LEX_H - -/* - * Source input, lexer and parser - */ - -#define IDENT 64 - -typedef struct source Source; -struct source { - const char *str; /* input pointer */ - int type; /* input type */ - const char *start; /* start of current buffer */ - union { - char **strv; /* string [] */ - struct shf *shf; /* shell file */ - struct tbl *tblp; /* alias (SALIAS) */ - char *freeme; /* also for SREREAD */ - } u; - char ugbuf[2]; /* buffer for ungetsc() (SREREAD) and - * alias (SALIAS) */ - int line; /* line number */ - int errline; /* line the error occurred on (0 if not set) */ - const char *file; /* input file name */ - int flags; /* SF_* */ - Area *areap; - XString xs; /* input buffer */ - Source *next; /* stacked source */ -}; - -/* Source.type values */ -#define SEOF 0 /* input EOF */ -#define SFILE 1 /* file input */ -#define SSTDIN 2 /* read stdin */ -#define SSTRING 3 /* string */ -#define SWSTR 4 /* string without \n */ -#define SWORDS 5 /* string[] */ -#define SWORDSEP 6 /* string[] separator */ -#define SALIAS 7 /* alias expansion */ -#define SREREAD 8 /* read ahead to be re-scanned */ - -/* Source.flags values */ -#define SF_ECHO BIT(0) /* echo input to shlout */ -#define SF_ALIAS BIT(1) /* faking space at end of alias */ -#define SF_ALIASEND BIT(2) /* faking space at end of alias */ -#define SF_TTY BIT(3) /* type == SSTDIN & it is a tty */ - -/* - * states while lexing word - */ -#define SBASE 0 /* outside any lexical constructs */ -#define SWORD 1 /* implicit quoting for substitute() */ -#define SLETPAREN 2 /* inside (( )), implicit quoting */ -#define SSQUOTE 3 /* inside '' */ -#define SDQUOTE 4 /* inside "" */ -#define SBRACE 5 /* inside ${} */ -#define SCSPAREN 6 /* inside $() */ -#define SBQUOTE 7 /* inside `` */ -#define SASPAREN 8 /* inside $(( )) */ -#define SHEREDELIM 9 /* parsing <<,<<- delimiter */ -#define SHEREDQUOTE 10 /* parsing " in <<,<<- delimiter */ -#define SPATTERN 11 /* parsing *(...|...) pattern (*+?@!) */ -#define STBRACE 12 /* parsing ${..[#%]..} */ - -typedef union { - int i; - char *cp; - char **wp; - struct op *o; - struct ioword *iop; -} YYSTYPE; - -/* If something is added here, add it to tokentab[] in syn.c as well */ -#define LWORD 256 -#define LOGAND 257 /* && */ -#define LOGOR 258 /* || */ -#define BREAK 259 /* ;; */ -#define IF 260 -#define THEN 261 -#define ELSE 262 -#define ELIF 263 -#define FI 264 -#define CASE 265 -#define ESAC 266 -#define FOR 267 -#define SELECT 268 -#define WHILE 269 -#define UNTIL 270 -#define DO 271 -#define DONE 272 -#define IN 273 -#define FUNCTION 274 -#define TIME 275 -#define REDIR 276 -#define MDPAREN 277 /* (( )) */ -#define BANG 278 /* ! */ -#define DBRACKET 279 /* [[ .. ]] */ -#define COPROC 280 /* |& */ -#define YYERRCODE 300 - -/* flags to yylex */ -#define CONTIN BIT(0) /* skip new lines to complete command */ -#define ONEWORD BIT(1) /* single word for substitute() */ -#define ALIAS BIT(2) /* recognize alias */ -#define KEYWORD BIT(3) /* recognize keywords */ -#define LETEXPR BIT(4) /* get expression inside (( )) */ -#define VARASN BIT(5) /* check for var=word */ -#define ARRAYVAR BIT(6) /* parse x[1 & 2] as one word */ -#define ESACONLY BIT(7) /* only accept esac keyword */ -#define CMDWORD BIT(8) /* parsing simple command (alias related) */ -#define HEREDELIM BIT(9) /* parsing <<,<<- delimiter */ - -#define HERES 10 /* max << in line */ - -EXTERN Source *source; /* yyparse/yylex source */ -EXTERN YYSTYPE yylval; /* result from yylex */ -EXTERN struct ioword *heres [HERES], **herep; -EXTERN char ident [IDENT+1]; - -#define HISTORYSIZE 511 /* size of saved history */ - -EXTERN char **history; /* saved commands */ -EXTERN char **histptr; /* last history item */ -EXTERN int histsize; /* history size */ - -#endif /* ndef LEX_H */ diff --git a/main.c b/main.c deleted file mode 100644 index 82b798b..0000000 --- a/main.c +++ /dev/null @@ -1,751 +0,0 @@ -/** $MirOS: src/bin/ksh/main.c,v 1.2 2005/05/21 16:36:53 tg Exp $ */ -/* $OpenBSD: main.c,v 1.35 2004/12/22 18:57:28 otto Exp $ */ - -/* - * startup, main loop, environments and error handling - */ - -#define EXTERN /* define EXTERNs in sh.h */ - -#include "sh.h" -#include "ksh_stat.h" -#include - -/* - * shell version - */ - -__RCSID("$MirOS: src/bin/ksh/main.c,v 1.2 2005/05/21 16:36:53 tg Exp $"); - -const char ksh_version[] = - "@(#)PD KSH v5.2.14 MirOS R20u in " -#ifdef MIRBSD_NATIVE - "native " -#endif - "KSH mode" -#ifndef MIRBSD_NATIVE - " as mksh" -#endif - ; - -/* - * global data - */ - -extern char **environ; - -static void reclaim(void); -static void remove_temps(struct temp *tp); -static int is_restricted(char *name); - -/* - * shell initialization - */ - -static const char initifs[] = "IFS= \t\n"; - -static const char initsubs[] = "${PS2=> } ${PS3=#? } ${PS4=+ }"; - -static const char *const initcoms [] = { - "typeset", "-x", "SHELL", "PATH", "HOME", NULL, - "typeset", "-r", "KSH_VERSION", NULL, - "typeset", "-i", "PGRP=0", "PPID", NULL, - "typeset", "-i", "OPTIND=1", NULL, - "eval", "typeset -i RANDOM SECONDS=\"${SECONDS-0}\" TMOUT=\"${TMOUT-0}\"", NULL, - "alias", - /* Standard ksh aliases */ - "hash=alias -t", /* not "alias -t --": hash -r needs to work */ - "type=whence -v", -#ifdef JOBS - "stop=kill -STOP", - "suspend=kill -STOP $$", -#endif - "autoload=typeset -fu", - "functions=typeset -f", - "history=fc -l", - "integer=typeset -i", - "nohup=nohup ", - "local=typeset", - "r=fc -e -", - /* Aliases that are builtin commands in at&t */ - "login=exec login", - NULL, - /* this is what at&t ksh seems to track, with the addition of emacs */ - "alias", "-tU", - "cat", "cc", "chmod", "cp", "date", "ed", "emacs", "grep", "ls", - "mail", "make", "mv", "pr", "rm", "sed", "sh", "vi", "who", - NULL, -#ifdef EXTRA_INITCOMS - EXTRA_INITCOMS, NULL, -#endif /* EXTRA_INITCOMS */ - NULL -}; - -int -main(int argc, char *argv[]) -{ - int i; - int argi; - Source *s; - struct block *l; - int restricted, errexit; - char **wp; - struct env env; - pid_t ppid; - -#ifdef MEM_DEBUG - chmem_set_defaults("ct", 1); - /* chmem_push("+c", 1); */ -#endif /* MEM_DEBUG */ - - /* make sure argv[] is sane */ - if (!*argv) { - static const char *empty_argv[] = {"mksh", NULL}; - - argv = (char **) empty_argv; - argc = 1; - } - kshname = *argv; - - ainit(&aperm); /* initialize permanent Area */ - - /* set up base environment */ - memset(&env, 0, sizeof(env)); - env.type = E_NONE; - ainit(&env.area); - e = &env; - newblock(); /* set up global l->vars and l->funs */ - - /* Do this first so output routines (eg, errorf, shellf) can work */ - initio(); - - argi = parse_args(argv, OF_FIRSTTIME, NULL); - if (argi < 0) - exit(1); - - initvar(); - - initctypes(); - - inittraps(); - - coproc_init(); - - /* set up variable and command dictionaries */ - tinit(&taliases, APERM, 0); - tinit(&aliases, APERM, 0); - tinit(&homedirs, APERM, 0); - - /* define shell keywords */ - initkeywords(); - - /* define built-in commands */ - tinit(&builtins, APERM, 64); /* must be 2^n (currently 40 builtins) */ - for (i = 0; shbuiltins[i].name != NULL; i++) - builtin(shbuiltins[i].name, shbuiltins[i].func); - for (i = 0; kshbuiltins[i].name != NULL; i++) - builtin(kshbuiltins[i].name, kshbuiltins[i].func); - - init_histvec(); - - def_path = DEFAULT__PATH; -#if defined(HAVE_CONFSTR) && defined(_CS_PATH) - { - size_t len = confstr(_CS_PATH, NULL, 0); - char *new; - - if (len > 0) { - confstr(_CS_PATH, new = alloc(len + 1, APERM), len + 1); - def_path = new; - } - } -#endif /* HAVE_CONFSTR && _CS_PATH */ - - /* Set PATH to def_path (will set the path global variable). - * (import of environment below will probably change this setting). - */ - { - struct tbl *vp = global("PATH"); - /* setstr can't fail here */ - setstr(vp, def_path, KSH_RETURN_ERROR); - } - - - /* Turn on nohup by default for now - will change to off - * by default once people are aware of its existence - * (at&t ksh does not have a nohup option - it always sends - * the hup). - */ - Flag(FNOHUP) = 1; - - /* Turn on brace expansion by default. At&t ksh's that have - * alternation always have it on. BUT, posix doesn't have - * brace expansion, so set this before setting up FPOSIX - * (change_flag() clears FBRACEEXPAND when FPOSIX is set). - */ - Flag(FBRACEEXPAND) = 1; - - /* Check to see if we're /bin/sh. */ - if (!strcmp(&kshname[strlen(kshname) - 3], "/sh") - || !strcmp(kshname, "sh") || !strcmp(kshname, "-sh")) - Flag(FSH) = 1; - - /* Set edit mode to emacs by default, may be overridden - * by the environment or the user. Also, we want tab completion - * on in vi by default. */ - change_flag(FEMACS, OF_SPECIAL, 1); - Flag(FVITABCOMPLETE) = 1; - - /* import environment */ - if (environ != NULL) - for (wp = environ; *wp != NULL; wp++) - typeset(*wp, IMPORT|EXPORT, 0, 0, 0); - - kshpid = procpid = getpid(); - typeset(initifs, 0, 0, 0, 0); /* for security */ - - /* assign default shell variable values */ - substitute(initsubs, 0); - - /* Figure out the current working directory and set $PWD */ - { - struct stat s_pwd, s_dot; - struct tbl *pwd_v = global("PWD"); - char *pwd = str_val(pwd_v); - char *pwdx = pwd; - - /* Try to use existing $PWD if it is valid */ - if (!ISABSPATH(pwd) - || stat(pwd, &s_pwd) < 0 || stat(".", &s_dot) < 0 - || s_pwd.st_dev != s_dot.st_dev - || s_pwd.st_ino != s_dot.st_ino) - pwdx = NULL; - set_current_wd(pwdx); - if (current_wd[0]) - simplify_path(current_wd); - /* Only set pwd if we know where we are or if it had a - * bogus value - */ - if (current_wd[0] || pwd != null) - /* setstr can't fail here */ - setstr(pwd_v, current_wd, KSH_RETURN_ERROR); - } - ppid = getppid(); - rnd_seed( (*((long *)kshname)) ^ ((long)time(NULL) * kshpid * ppid) ); - setint(global("PPID"), (long) ppid); - /* Note: don't setint here, it loops into rnd_put() */ - rnd_get(); - if (!Flag(FSH)) - setstr(global("KSH_VERSION"), ksh_version, KSH_RETURN_ERROR); - - /* execute initialization statements */ - for (wp = (char**) initcoms; *wp != NULL; wp++) { - shcomexec(wp); - for (; *wp != NULL; wp++) - ; - } - - - ksheuid = geteuid(); - safe_prompt = ksheuid ? "$ " : "# "; - { - struct tbl *vp = global("PS1"); - - /* Set PS1 if it isn't set, or we are root and prompt doesn't - * contain a #. - */ - if (!(vp->flag & ISSET) - || (!ksheuid && !strchr(str_val(vp), '#'))) - /* setstr can't fail here */ - setstr(vp, safe_prompt, KSH_RETURN_ERROR); - } - - /* Set this before parsing arguments */ - Flag(FPRIVILEGED) = getuid() != ksheuid || getgid() != getegid(); - - /* this to note if monitor is set on command line (see below) */ - Flag(FMONITOR) = 127; - argi = parse_args(argv, OF_CMDLINE, NULL); - if (argi < 0) - exit(1); - - if (Flag(FCOMMAND)) { - s = pushs(SSTRING, ATEMP); - if (!(s->start = s->str = argv[argi++])) - errorf("-c requires an argument"); - if (argv[argi]) - kshname = argv[argi++]; - } else if (argi < argc && !Flag(FSTDIN)) { - s = pushs(SFILE, ATEMP); - s->file = argv[argi++]; - s->u.shf = shf_open(s->file, O_RDONLY, 0, SHF_MAPHI|SHF_CLEXEC); - if (s->u.shf == NULL) { - exstat = 127; /* POSIX */ - errorf("%s: %s", s->file, strerror(errno)); - } - kshname = s->file; - } else { - Flag(FSTDIN) = 1; - s = pushs(SSTDIN, ATEMP); - s->file = ""; - s->u.shf = shf_fdopen(0, SHF_RD | can_seek(0), - NULL); - if (isatty(0) && isatty(2)) { - Flag(FTALKING) = Flag(FTALKING_I) = 1; - /* The following only if isatty(0) */ - s->flags |= SF_TTY; - s->u.shf->flags |= SHF_INTERRUPT; - s->file = NULL; - } - } - - /* This bizarreness is mandated by POSIX */ - { - struct stat s_stdin; - - if (fstat(0, &s_stdin) >= 0 && S_ISCHR(s_stdin.st_mode) && - Flag(FTALKING)) - reset_nonblock(0); - } - - /* initialize job control */ - i = Flag(FMONITOR) != 127; - Flag(FMONITOR) = 0; - j_init(i); - /* Do this after j_init(), as tty_fd is not initialized 'til then */ - if (Flag(FTALKING)) - x_init(); - - l = e->loc; - l->argv = &argv[argi - 1]; - l->argc = argc - argi; - l->argv[0] = (char *) kshname; - getopts_reset(1); - - /* Disable during .profile/ENV reading */ - restricted = Flag(FRESTRICTED); - Flag(FRESTRICTED) = 0; - errexit = Flag(FERREXIT); - Flag(FERREXIT) = 0; - - /* Do this before profile/$ENV so that if it causes problems in them, - * user will know why things broke. - */ - if (!current_wd[0] && Flag(FTALKING)) - warningf(false, "Cannot determine current working directory"); - - if (Flag(FLOGIN)) { - include(KSH_SYSTEM_PROFILE, 0, NULL, 1); - if (!Flag(FPRIVILEGED)) - include(substitute("$HOME/.profile", 0), 0, - NULL, 1); - } - - if (Flag(FPRIVILEGED)) - include("/etc/suid_profile", 0, NULL, 1); - else { - char *env_file; - - /* include $ENV */ - env_file = str_val(global("ENV")); - -#ifdef DEFAULT_ENV - /* If env isn't set, include default environment */ - if (env_file == null) - env_file = DEFAULT_ENV; -#endif /* DEFAULT_ENV */ - env_file = substitute(env_file, DOTILDE); - if (*env_file != '\0') - include(env_file, 0, NULL, 1); - } - - if (is_restricted(argv[0]) || is_restricted(str_val(global("SHELL")))) - restricted = 1; - if (restricted) { - static const char *const restr_com[] = { - "typeset", "-r", "PATH", - "ENV", "SHELL", - NULL - }; - shcomexec((char **) restr_com); - /* After typeset command... */ - Flag(FRESTRICTED) = 1; - } - if (errexit) - Flag(FERREXIT) = 1; - - if (Flag(FTALKING)) { - hist_init(s); - alarm_init(); - } else - Flag(FTRACKALL) = 1; /* set after ENV */ - - shell(s, true); /* doesn't return */ - return 0; -} - -int -include(const char *name, int argc, char **argv, int intr_ok) -{ - Source *volatile s = NULL; - struct shf *shf; - char **volatile old_argv; - volatile int old_argc; - int i; - - shf = shf_open(name, O_RDONLY, 0, SHF_MAPHI|SHF_CLEXEC); - if (shf == NULL) - return -1; - - if (argv) { - old_argv = e->loc->argv; - old_argc = e->loc->argc; - } else { - old_argv = NULL; - old_argc = 0; - } - newenv(E_INCL); - i = ksh_sigsetjmp(e->jbuf, 0); - if (i) { - quitenv(s ? s->u.shf : NULL); - if (old_argv) { - e->loc->argv = old_argv; - e->loc->argc = old_argc; - } - switch (i) { - case LRETURN: - case LERROR: - return exstat & 0xff; /* see below */ - case LINTR: - /* intr_ok is set if we are including .profile or $ENV. - * If user ^C's out, we don't want to kill the shell... - */ - if (intr_ok && (exstat - 128) != SIGTERM) - return 1; - /* fall through... */ - case LEXIT: - case LLEAVE: - case LSHELL: - unwind(i); - /*NOREACHED*/ - default: - internal_errorf(1, "include: %d", i); - /*NOREACHED*/ - } - } - if (argv) { - e->loc->argv = argv; - e->loc->argc = argc; - } - s = pushs(SFILE, ATEMP); - s->u.shf = shf; - s->file = str_save(name, ATEMP); - i = shell(s, false); - quitenv(s->u.shf); - if (old_argv) { - e->loc->argv = old_argv; - e->loc->argc = old_argc; - } - return i & 0xff; /* & 0xff to ensure value not -1 */ -} - -int -command(const char *comm) -{ - Source *s; - - s = pushs(SSTRING, ATEMP); - s->start = s->str = comm; - return shell(s, false); -} - -/* - * run the commands from the input source, returning status. - */ -int -shell(Source *volatile s, volatile int toplevel) - /* input source */ - -{ - struct op *t; - volatile int wastty = s->flags & SF_TTY; - volatile int attempts = 13; - volatile int interactive = Flag(FTALKING) && toplevel; - Source *volatile old_source = source; - int i; - - newenv(E_PARSE); - if (interactive) - really_exit = 0; - i = ksh_sigsetjmp(e->jbuf, 0); - if (i) { - switch (i) { - case LINTR: /* we get here if SIGINT not caught or ignored */ - case LERROR: - case LSHELL: - if (interactive) { - if (i == LINTR) - shellf(newline); - /* Reset any eof that was read as part of a - * multiline command. - */ - if (Flag(FIGNOREEOF) && s->type == SEOF - && wastty) - s->type = SSTDIN; - /* Used by exit command to get back to - * top level shell. Kind of strange since - * interactive is set if we are reading from - * a tty, but to have stopped jobs, one only - * needs FMONITOR set (not FTALKING/SF_TTY)... - */ - /* toss any input we have so far */ - s->start = s->str = null; - break; - } - /* fall through... */ - case LEXIT: - case LLEAVE: - case LRETURN: - source = old_source; - quitenv(NULL); - unwind(i); /* keep on going */ - /*NOREACHED*/ - default: - source = old_source; - quitenv(NULL); - internal_errorf(1, "shell: %d", i); - /*NOREACHED*/ - } - } - - while (1) { - if (trap) - runtraps(0); - - if (s->next == NULL) { - if (Flag(FVERBOSE)) - s->flags |= SF_ECHO; - else - s->flags &= ~SF_ECHO; - } - - if (interactive) { - j_notify(); - set_prompt(PS1, s); - } - - t = compile(s); - if (t != NULL && t->type == TEOF) { - if (wastty && Flag(FIGNOREEOF) && --attempts > 0) { - shellf("Use 'exit' to leave ksh\n"); - s->type = SSTDIN; - } else if (wastty && !really_exit - && j_stopped_running()) - { - really_exit = 1; - s->type = SSTDIN; - } else { - /* this for POSIX, which says EXIT traps - * shall be taken in the environment - * immediately after the last command - * executed. - */ - if (toplevel) - unwind(LEXIT); - break; - } - } - - if (t && (!Flag(FNOEXEC) || (s->flags & SF_TTY))) - exstat = execute(t, 0); - - if (t != NULL && t->type != TEOF && interactive && really_exit) - really_exit = 0; - - reclaim(); - } - quitenv(NULL); - source = old_source; - return exstat; -} - -/* return to closest error handler or shell(), exit if none found */ -void -unwind(int i) -{ - /* ordering for EXIT vs ERR is a bit odd (this is what at&t ksh does) */ - if (i == LEXIT || (Flag(FERREXIT) && (i == LERROR || i == LINTR) - && sigtraps[SIGEXIT_].trap)) - { - runtrap(&sigtraps[SIGEXIT_]); - i = LLEAVE; - } else if (Flag(FERREXIT) && (i == LERROR || i == LINTR)) { - runtrap(&sigtraps[SIGERR_]); - i = LLEAVE; - } - while (1) { - switch (e->type) { - case E_PARSE: - case E_FUNC: - case E_INCL: - case E_LOOP: - case E_ERRH: - ksh_siglongjmp(e->jbuf, i); - /*NOTREACHED*/ - - case E_NONE: - if (i == LINTR) - e->flags |= EF_FAKE_SIGDIE; - /* Fall through... */ - - default: - quitenv(NULL); - } - } -} - -void -newenv(int type) -{ - struct env *ep; - - ep = (struct env *) alloc(sizeof(*ep), ATEMP); - ep->type = type; - ep->flags = 0; - ainit(&ep->area); - ep->loc = e->loc; - ep->savefd = NULL; - ep->oenv = e; - ep->temps = NULL; - e = ep; -} - -void -quitenv(struct shf *shf) -{ - struct env *ep = e; - int fd; - - if (ep->oenv && ep->oenv->loc != ep->loc) - popblock(); - if (ep->savefd != NULL) { - for (fd = 0; fd < NUFILE; fd++) - /* if ep->savefd[fd] < 0, means fd was closed */ - if (ep->savefd[fd]) - restfd(fd, ep->savefd[fd]); - if (ep->savefd[2]) /* Clear any write errors */ - shf_reopen(2, SHF_WR, shl_out); - } - - /* Bottom of the stack. - * Either main shell is exiting or cleanup_parents_env() was called. - */ - if (ep->oenv == NULL) { - if (ep->type == E_NONE) { /* Main shell exiting? */ - if (Flag(FTALKING)) - hist_finish(); - j_exit(); - if (ep->flags & EF_FAKE_SIGDIE) { - int sig = exstat - 128; - - /* ham up our death a bit (at&t ksh - * only seems to do this for SIGTERM) - * Don't do it for SIGQUIT, since we'd - * dump a core.. - */ - if ((sig == SIGINT || sig == SIGTERM) && - getpgrp() == kshpid) { - setsig(&sigtraps[sig], SIG_DFL, - SS_RESTORE_CURR|SS_FORCE); - kill(0, sig); - } - } -#ifdef MEM_DEBUG - chmem_allfree(); -#endif /* MEM_DEBUG */ - } - if (shf) - shf_close(shf); - reclaim(); - exit(exstat); - } - if (shf) - shf_close(shf); - reclaim(); - - e = e->oenv; - afree(ep, ATEMP); -} - -/* Called after a fork to cleanup stuff left over from parents environment */ -void -cleanup_parents_env(void) -{ - struct env *ep; - int fd; - - /* Don't clean up temporary files - parent will probably need them. - * Also, can't easily reclaim memory since variables, etc. could be - * anywhere. - */ - - /* close all file descriptors hiding in savefd */ - for (ep = e; ep; ep = ep->oenv) { - if (ep->savefd) { - for (fd = 0; fd < NUFILE; fd++) - if (ep->savefd[fd] > 0) - close(ep->savefd[fd]); - afree(ep->savefd, &ep->area); - ep->savefd = NULL; - } - } - e->oenv = NULL; -} - -/* Called just before an execve cleanup stuff temporary files */ -void -cleanup_proc_env(void) -{ - struct env *ep; - - for (ep = e; ep; ep = ep->oenv) - remove_temps(ep->temps); -} - -/* remove temp files and free ATEMP Area */ -static void -reclaim(void) -{ - remove_temps(e->temps); - e->temps = NULL; - afreeall(&e->area); -} - -static void -remove_temps(struct temp *tp) -{ - for (; tp != NULL; tp = tp->next) - if (tp->pid == procpid) - unlink(tp->name); -} - -/* Returns true if name refers to a restricted shell */ -static int -is_restricted(char *name) -{ - char *p; - - if ((p = ksh_strrchr_dirsep(name))) - name = p; - /* accepts rsh, rksh, rpdksh, pdrksh, etc. */ - return (p = strchr(name, 'r')) && strstr(p, "sh") - && !strstr(p-2, "mirbsdksh") && !strstr(p-2, "mirosksh"); -} - -void -aerror(Area *ap GCC_FUNC_ATTR(unused), const char *msg) -{ - internal_errorf(1, "alloc: %s", msg); - errorf(null); /* this is never executed - keeps gcc quiet */ - /*NOTREACHED*/ -} diff --git a/misc.c b/misc.c deleted file mode 100644 index 444b14c..0000000 --- a/misc.c +++ /dev/null @@ -1,1329 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: misc.c,v 1.20 2003/10/22 07:40:38 jmc Exp $ */ - -/* - * Miscellaneous functions - */ - -#include "sh.h" -#include /* for FILECHCONV */ -#include -#include -#include "ksh_stat.h" - -__RCSID("$MirOS$"); - -#ifndef UCHAR_MAX -# define UCHAR_MAX 0xFF -#endif - -short ctypes [UCHAR_MAX+1]; /* type bits for unsigned char */ - -static int do_gmatch(const unsigned char *s, const unsigned char *p, - const unsigned char *se, const unsigned char *pe, - int isfile); -static const unsigned char *cclass(const unsigned char *p, int sub); -static int parse_T(char *); - -/* - * Fast character classes - */ -void -setctypes(const char *s, int t) -{ - unsigned i; - - if (t & C_IFS) { - for (i = 0; i < UCHAR_MAX+1; i++) - ctypes[i] &= ~C_IFS; - ctypes[0] |= C_IFS; /* include \0 in C_IFS */ - } - while (*s != 0) - ctypes[(unsigned char) *s++] |= t; -} - -void -initctypes(void) -{ - int c; - - for (c = 'a'; c <= 'z'; c++) - ctypes[c] |= C_ALPHA; - for (c = 'A'; c <= 'Z'; c++) - ctypes[c] |= C_ALPHA; - ctypes['_'] |= C_ALPHA; - setctypes("0123456789", C_DIGIT); - setctypes(" \t\n|&;<>()", C_LEX1); /* \0 added automatically */ - setctypes("*@#!$-?", C_VAR1); - setctypes(" \t\n", C_IFSWS); - setctypes("=-+?", C_SUBOP1); - setctypes("#%", C_SUBOP2); - setctypes(" \n\t\"#$&'()*;<>?[\\`|", C_QUOTE); -} - -/* convert unsigned long to base N string */ - -char * -ulton(long unsigned int n, int base) -{ - char *p; - static char buf [20]; - - p = &buf[sizeof(buf)]; - *--p = '\0'; - do { - *--p = "0123456789ABCDEF"[n%base]; - n /= base; - } while (n != 0); - return p; -} - -char * -str_save(const char *s, Area *ap) -{ - size_t len; - char *p; - - if (!s) - return NULL; - len = strlen(s)+1; - p = alloc(len, ap); - strlcpy(p, s, len+1); - return (p); -} - -/* Allocate a string of size n+1 and copy upto n characters from the possibly - * null terminated string s into it. Always returns a null terminated string - * (unless n < 0). - */ -char * -str_nsave(const char *s, int n, Area *ap) -{ - char *ns; - - if (n < 0) - return 0; - ns = alloc(n + 1, ap); - ns[0] = '\0'; - return strncat(ns, s, n); -} - -/* called from expand.h:XcheckN() to grow buffer */ -char * -Xcheck_grow_(XString *xsp, char *xp, size_t more) -{ - char *old_beg = xsp->beg; - - xsp->len += more > xsp->len ? more : xsp->len; - xsp->beg = aresize(xsp->beg, xsp->len + 8, xsp->areap); - xsp->end = xsp->beg + xsp->len; - return xsp->beg + (xp - old_beg); -} - -const struct option options[] = { - /* Special cases (see parse_args()): -A, -o, -s. - * Options are sorted by their longnames - the order of these - * entries MUST match the order of sh_flag F* enumerations in sh.h. - */ - { "allexport", 'a', OF_ANY }, - { "braceexpand", 0, OF_ANY }, /* non-standard */ - { "bgnice", 0, OF_ANY }, - { NULL, 'c', OF_CMDLINE }, - { "emacs", 0, OF_ANY }, - { "emacs-usemeta", 0, OF_ANY }, /* non-standard */ - { "errexit", 'e', OF_ANY }, - { "gmacs", 0, OF_ANY }, - { "ignoreeof", 0, OF_ANY }, - { "interactive",'i', OF_CMDLINE }, - { "keyword", 'k', OF_ANY }, - { "login", 'l', OF_CMDLINE }, - { "markdirs", 'X', OF_ANY }, -#ifdef JOBS - { "monitor", 'm', OF_ANY }, -#else /* JOBS */ - { NULL, 'm', 0 }, /* so FMONITOR not ifdef'd */ -#endif /* JOBS */ - { "noclobber", 'C', OF_ANY }, - { "noexec", 'n', OF_ANY }, - { "noglob", 'f', OF_ANY }, - { "nohup", 0, OF_ANY }, - { "nolog", 0, OF_ANY }, /* no effect */ -#ifdef JOBS - { "notify", 'b', OF_ANY }, -#endif /* JOBS */ - { "nounset", 'u', OF_ANY }, - { "physical", 0, OF_ANY }, /* non-standard */ - { "posix", 0, OF_ANY }, /* non-standard */ - { "privileged", 'p', OF_ANY }, - { "restricted", 'r', OF_CMDLINE }, - { "sh", 0, OF_ANY }, /* non-standard */ - { "stdin", 's', OF_CMDLINE }, /* pseudo non-standard */ - { "trackall", 'h', OF_ANY }, - { "verbose", 'v', OF_ANY }, - { "vi", 0, OF_ANY }, - { "viraw", 0, OF_ANY }, /* no effect */ - { "vi-show8", 0, OF_ANY }, /* non-standard */ - { "vi-tabcomplete", 0, OF_ANY }, /* non-standard */ - { "vi-esccomplete", 0, OF_ANY }, /* non-standard */ - { "xtrace", 'x', OF_ANY }, - /* Anonymous flags: used internally by shell only - * (not visible to user) - */ - { NULL, 0, OF_INTERNAL }, /* FTALKING_I */ -}; - -/* - * translate -o option into F* constant (also used for test -o option) - */ -int -option(const char *n) -{ - unsigned i; - - for (i = 0; i < NELEM(options); i++) - if (options[i].name && strcmp(options[i].name, n) == 0) - return i; - - return -1; -} - -struct options_info { - int opt_width; - struct { - const char *name; - int flag; - } opts[NELEM(options)]; -}; - -static char *options_fmt_entry(void *arg, int i, char *buf, int buflen); -static void printoptions(int verbose); - -/* format a single select menu item */ -static char * -options_fmt_entry(void *arg, int i, char *buf, int buflen) -{ - struct options_info *oi = (struct options_info *) arg; - - shf_snprintf(buf, buflen, "%-*s %s", - oi->opt_width, oi->opts[i].name, - Flag(oi->opts[i].flag) ? "on" : "off"); - return buf; -} - -static void -printoptions(int verbose) -{ - unsigned i; - - if (verbose) { - struct options_info oi; - int n, len; - - /* verbose version */ - shprintf("Current option settings\n"); - - for (i = n = oi.opt_width = 0; i < NELEM(options); i++) - if (options[i].name) { - len = strlen(options[i].name); - oi.opts[n].name = options[i].name; - oi.opts[n++].flag = i; - if (len > oi.opt_width) - oi.opt_width = len; - } - print_columns(shl_stdout, n, options_fmt_entry, &oi, - oi.opt_width + 5, 1); - } else { - /* short version ala ksh93 */ - shprintf("set"); - for (i = 0; i < NELEM(options); i++) - if (Flag(i) && options[i].name) - shprintf(" -o %s", options[i].name); - shprintf(newline); - } -} - -char * -getoptions(void) -{ - unsigned i; - char m[(int) FNFLAGS + 1]; - char *cp = m; - - for (i = 0; i < NELEM(options); i++) - if (options[i].c && Flag(i)) - *cp++ = options[i].c; - *cp = 0; - return str_save(m, ATEMP); -} - -/* change a Flag(*) value; takes care of special actions */ -void -change_flag(enum sh_flag f, int what, int newval) - /* flag to change */ - /* what is changing the flag (command line vs set) */ - -{ - int oldval; - - oldval = Flag(f); - Flag(f) = newval; -#ifdef JOBS - if (f == FMONITOR) { - if (what != OF_CMDLINE && newval != oldval) - j_change(); - } else -#endif /* JOBS */ - if (f == FVI || f == FEMACS || f == FGMACS) { - if (newval) { - Flag(FVI) = 0; - Flag(FEMACS) = Flag(FGMACS) = 0; - Flag(f) = newval; - } - } else - /* Turning off -p? */ - if (f == FPRIVILEGED && oldval && !newval) { - seteuid(ksheuid = getuid()); - setuid(ksheuid); - setegid(getgid()); - setgid(getgid()); - } else if (f == FPOSIX && newval) { - Flag(FBRACEEXPAND) = 0; - } - /* Changing interactive flag? */ - if (f == FTALKING) { - if ((what == OF_CMDLINE || what == OF_SET) - && procpid == kshpid) - Flag(FTALKING_I) = newval; - } -} - -/* parse command line & set command arguments. returns the index of - * non-option arguments, -1 if there is an error. - */ -int -parse_args(char **argv, int what, int *setargsp) - - /* OF_CMDLINE or OF_SET */ - -{ - static char cmd_opts[NELEM(options) + 5]; /* o:T:\0 */ - static char set_opts[NELEM(options) + 5]; /* Ao;s\0 */ - char *opts; - char *array = NULL; - Getopt go; - int i, optc, set, sortargs = 0, arrayset = 0; - unsigned u; - - /* First call? Build option strings... */ - if (cmd_opts[0] == '\0') { - char *p, *q; - - /* see cmd_opts[] declaration */ - strlcpy(cmd_opts, "o:T:", sizeof cmd_opts); - p = cmd_opts + strlen(cmd_opts); - /* see set_opts[] declaration */ - strlcpy(set_opts, "A:o;s", sizeof set_opts); - q = set_opts + strlen(set_opts); - for (u = 0; u < NELEM(options); u++) { - if (options[u].c) { - if (options[u].flags & OF_CMDLINE) - *p++ = options[u].c; - if (options[u].flags & OF_SET) - *q++ = options[u].c; - } - } - *p = '\0'; - *q = '\0'; - } - - if (what == OF_CMDLINE) { - char *p; - /* Set FLOGIN before parsing options so user can clear - * flag using +l. - */ - Flag(FLOGIN) = (argv[0][0] == '-' - || ((p = ksh_strrchr_dirsep(argv[0])) - && *++p == '-')); - opts = cmd_opts; - } else if (what == OF_FIRSTTIME) { - opts = cmd_opts; - } else - opts = set_opts; - ksh_getopt_reset(&go, GF_ERROR|GF_PLUSOPT); - while ((optc = ksh_getopt(argv, &go, opts)) != EOF) { - set = (go.info & GI_PLUS) ? 0 : 1; - switch (optc) { - case 'A': - if (what == OF_FIRSTTIME) - break; - arrayset = set ? 1 : -1; - array = go.optarg; - break; - - case 'T': - if (what != OF_FIRSTTIME) - break; - if (parse_T(go.optarg)) - return -1; - change_flag(FTALKING, OF_CMDLINE, 1); - break; - - case 'o': - if (what == OF_FIRSTTIME) - break; - if (go.optarg == NULL) { - /* lone -o: print options - * - * Note that on the command line, -o requires - * an option (ie, can't get here if what is - * OF_CMDLINE). - */ - printoptions(set); - break; - } - i = option(go.optarg); - if (i >= 0 && set == Flag(i)) - /* Don't check the context if the flag - * isn't changing - makes "set -o interactive" - * work if you're already interactive. Needed - * if the output of "set +o" is to be used. - */ - ; - else if (i >= 0 && (options[i].flags & what)) - change_flag((enum sh_flag) i, what, set); - else { - bi_errorf("%s: bad option", go.optarg); - return -1; - } - break; - - case '?': - return -1; - - default: - if (what == OF_FIRSTTIME) - break; - /* -s: sort positional params (at&t ksh stupidity) */ - if (what == OF_SET && optc == 's') { - sortargs = 1; - break; - } - for (u = 0; u < NELEM(options); u++) - if (optc == options[u].c - && (what & options[u].flags)) - { - change_flag((enum sh_flag) u, what, - set); - break; - } - if (u == NELEM(options)) { - internal_errorf(1, "parse_args: '%c'", optc); - return -1; /* not reached */ - } - } - } - if (!(go.info & GI_MINUSMINUS) && argv[go.optind] - && (argv[go.optind][0] == '-' || argv[go.optind][0] == '+') - && argv[go.optind][1] == '\0') - { - /* lone - clears -v and -x flags */ - if (argv[go.optind][0] == '-' && !Flag(FPOSIX)) - Flag(FVERBOSE) = Flag(FXTRACE) = 0; - /* set skips lone - or + option */ - go.optind++; - } - if (setargsp) - /* -- means set $#/$* even if there are no arguments */ - *setargsp = !arrayset && ((go.info & GI_MINUSMINUS) - || argv[go.optind]); - - if (arrayset && (!*array || *skip_varname(array, false))) { - bi_errorf("%s: is not an identifier", array); - return -1; - } - if (sortargs) { - for (i = go.optind; argv[i]; i++) - ; - qsortp((void **) &argv[go.optind], (size_t) (i - go.optind), - xstrcmp); - } - if (arrayset) { - set_array(array, arrayset, argv + go.optind); - for (; argv[go.optind]; go.optind++) - ; - } - - return go.optind; -} - -/* parse a decimal number: returns 0 if string isn't a number, 1 otherwise */ -int -getn(const char *as, int *ai) -{ - char *p; - long n; - - n = strtol(as, &p, 10); - - if (!*as || *p || INT_MIN >= n || n >= INT_MAX) - return 0; - - *ai = (int)n; - return 1; -} - -/* getn() that prints error */ -int -bi_getn(const char *as, int *ai) -{ - int rv = getn(as, ai); - - if (!rv) - bi_errorf("%s: bad number", as); - return rv; -} - -/* -------- gmatch.c -------- */ - -/* - * int gmatch(string, pattern) - * char *string, *pattern; - * - * Match a pattern as in sh(1). - * pattern character are prefixed with MAGIC by expand. - */ - -int -gmatch(const char *s, const char *p, int isfile) -{ - const char *se, *pe; - - if (s == NULL || p == NULL) - return 0; - se = s + strlen(s); - pe = p + strlen(p); - /* isfile is false iff no syntax check has been done on - * the pattern. If check fails, just to a strcmp(). - */ - if (!isfile && !has_globbing(p, pe)) { - size_t len = pe - p + 1; - char tbuf[64]; - char *t = len <= sizeof(tbuf) ? tbuf - : (char *) alloc(len, ATEMP); - debunk(t, p, len); - return !strcmp(t, s); - } - return do_gmatch((const unsigned char *) s, (const unsigned char *) se, - (const unsigned char *) p, (const unsigned char *) pe, - isfile); -} - -/* Returns if p is a syntacticly correct globbing pattern, false - * if it contains no pattern characters or if there is a syntax error. - * Syntax errors are: - * - [ with no closing ] - * - imbalanced $(...) expression - * - [...] and *(...) not nested (eg, [a$(b|]c), *(a[b|c]d)) - */ -/*XXX -- if no magic, - if dest given, copy to dst - return ? -- if magic && (no globbing || syntax error) - debunk to dst - return ? -- return ? -*/ -int -has_globbing(const char *xp, const char *xpe) -{ - const unsigned char *p = (const unsigned char *) xp; - const unsigned char *pe = (const unsigned char *) xpe; - int c; - int nest = 0, bnest = 0; - int saw_glob = 0; - int in_bracket = 0; /* inside [...] */ - - for (; p < pe; p++) { - if (!ISMAGIC(*p)) - continue; - if ((c = *++p) == '*' || c == '?') - saw_glob = 1; - else if (c == '[') { - if (!in_bracket) { - saw_glob = 1; - in_bracket = 1; - if (ISMAGIC(p[1]) && p[2] == NOT) - p += 2; - if (ISMAGIC(p[1]) && p[2] == ']') - p += 2; - } - /* XXX Do we need to check ranges here? POSIX Q */ - } else if (c == ']') { - if (in_bracket) { - if (bnest) /* [a*(b]) */ - return 0; - in_bracket = 0; - } - } else if ((c & 0x80) && strchr("*+?@! ", c & 0x7f)) { - saw_glob = 1; - if (in_bracket) - bnest++; - else - nest++; - } else if (c == '|') { - if (in_bracket && !bnest) /* *(a[foo|bar]) */ - return 0; - } else if (c == /*(*/ ')') { - if (in_bracket) { - if (!bnest--) /* *(a[b)c] */ - return 0; - } else if (nest) - nest--; - } - /* else must be a MAGIC-MAGIC, or MAGIC-!, MAGIC--, MAGIC-] - MAGIC-{, MAGIC-,, MAGIC-} */ - } - return saw_glob && !in_bracket && !nest; -} - -/* Function must return either 0 or 1 (assumed by code for 0x80|'!') */ -static int -do_gmatch(const unsigned char *s, const unsigned char *se, const unsigned char *p, const unsigned char *pe, int isfile) -{ - int sc, pc; - const unsigned char *prest, *psub, *pnext; - const unsigned char *srest; - - if (s == NULL || p == NULL) - return 0; - while (p < pe) { - pc = *p++; - sc = s < se ? *s : '\0'; - s++; - if (isfile) { - sc = FILECHCONV(sc); - pc = FILECHCONV(pc); - } - if (!ISMAGIC(pc)) { - if (sc != pc) - return 0; - continue; - } - switch (*p++) { - case '[': - if (sc == 0 || (p = cclass(p, sc)) == NULL) - return 0; - break; - - case '?': - if (sc == 0) - return 0; - break; - - case '*': - if (p == pe) - return 1; - s--; - do { - if (do_gmatch(s, se, p, pe, isfile)) - return 1; - } while (s++ < se); - return 0; - - /* - * [*+?@!](pattern|pattern|..) - * ${..%..}, etc. - */ - case 0x80|'+': /* matches one or more times */ - case 0x80|'*': /* matches zero or more times */ - if (!(prest = pat_scan(p, pe, 0))) - return 0; - s--; - /* take care of zero matches */ - if (p[-1] == (0x80 | '*') - && do_gmatch(s, se, prest, pe, isfile)) - return 1; - for (psub = p; ; psub = pnext) { - pnext = pat_scan(psub, pe, 1); - for (srest = s; srest <= se; srest++) { - if (do_gmatch(s, srest, - psub, pnext - 2, isfile) - && (do_gmatch(srest, se, - prest, pe, isfile) - || (s != srest - && do_gmatch(srest, se, - p - 2, pe, isfile)))) - return 1; - } - if (pnext == prest) - break; - } - return 0; - - case 0x80|'?': /* matches zero or once */ - case 0x80|'@': /* matches one of the patterns */ - case 0x80|' ': /* simile for @ */ - if (!(prest = pat_scan(p, pe, 0))) - return 0; - s--; - /* Take care of zero matches */ - if (p[-1] == (0x80 | '?') - && do_gmatch(s, se, prest, pe, isfile)) - return 1; - for (psub = p; ; psub = pnext) { - pnext = pat_scan(psub, pe, 1); - srest = prest == pe ? se : s; - for (; srest <= se; srest++) { - if (do_gmatch(s, srest, - psub, pnext - 2, isfile) - && do_gmatch(srest, se, - prest, pe, isfile)) - return 1; - } - if (pnext == prest) - break; - } - return 0; - - case 0x80|'!': /* matches none of the patterns */ - if (!(prest = pat_scan(p, pe, 0))) - return 0; - s--; - for (srest = s; srest <= se; srest++) { - int matched = 0; - - for (psub = p; ; psub = pnext) { - pnext = pat_scan(psub, pe, 1); - if (do_gmatch(s, srest, - psub, pnext - 2, isfile)) - { - matched = 1; - break; - } - if (pnext == prest) - break; - } - if (!matched && do_gmatch(srest, se, - prest, pe, isfile)) - return 1; - } - return 0; - - default: - if (sc != p[-1]) - return 0; - break; - } - } - return s == se; -} - -static const unsigned char * -cclass(const unsigned char *p, int sub) -{ - int c, d, not, found = 0; - const unsigned char *orig_p = p; - - if ((not = (ISMAGIC(*p) && *++p == NOT))) - p++; - do { - c = *p++; - if (ISMAGIC(c)) { - c = *p++; - if ((c & 0x80) && !ISMAGIC(c)) { - c &= 0x7f;/* extended pattern matching: *+?@! */ - /* XXX the ( char isn't handled as part of [] */ - if (c == ' ') /* simile for @: plain (..) */ - c = '(' /*)*/; - } - } - if (c == '\0') - /* No closing ] - act as if the opening [ was quoted */ - return sub == '[' ? orig_p : NULL; - if (ISMAGIC(p[0]) && p[1] == '-' - && (!ISMAGIC(p[2]) || p[3] != ']')) - { - p += 2; /* MAGIC- */ - d = *p++; - if (ISMAGIC(d)) { - d = *p++; - if ((d & 0x80) && !ISMAGIC(d)) - d &= 0x7f; - } - /* POSIX says this is an invalid expression */ - if (c > d) - return NULL; - } else - d = c; - if (c == sub || (c <= sub && sub <= d)) - found = 1; - } while (!(ISMAGIC(p[0]) && p[1] == ']')); - - return (found != not) ? p+2 : NULL; -} - -/* Look for next ) or | (if match_sep) in *(foo|bar) pattern */ -const unsigned char * -pat_scan(const unsigned char *p, const unsigned char *pe, int match_sep) -{ - int nest = 0; - - for (; p < pe; p++) { - if (!ISMAGIC(*p)) - continue; - if ((*++p == /*(*/ ')' && nest-- == 0) - || (*p == '|' && match_sep && nest == 0)) - return ++p; - if ((*p & 0x80) && strchr("*+?@! ", *p & 0x7f)) - nest++; - } - return NULL; -} - - -/* -------- qsort.c -------- */ - -/* - * quick sort of array of generic pointers to objects. - */ -static void qsort1(void **base, void **lim, int (*f)(void *, void *)); - -void -qsortp(void **base, size_t n, int (*f) (void *, void *)) - /* base address */ - /* elements */ - /* compare function */ -{ - qsort1(base, base + n, f); -} - -#define swap2(a, b) {\ - void *t; t = *(a); *(a) = *(b); *(b) = t;\ -} -#define swap3(a, b, c) {\ - void *t; t = *(a); *(a) = *(c); *(c) = *(b); *(b) = t;\ -} - -static void -qsort1(void **base, void **lim, int (*f) (void *, void *)) -{ - void **i, **j; - void **lptr, **hptr; - size_t n; - int c; - - top: - n = (lim - base) / 2; - if (n == 0) - return; - hptr = lptr = base+n; - i = base; - j = lim - 1; - - for (;;) { - if (i < lptr) { - if ((c = (*f)(*i, *lptr)) == 0) { - lptr --; - swap2(i, lptr); - continue; - } - if (c < 0) { - i += 1; - continue; - } - } - - begin: - if (j > hptr) { - if ((c = (*f)(*hptr, *j)) == 0) { - hptr ++; - swap2(hptr, j); - goto begin; - } - if (c > 0) { - if (i == lptr) { - hptr ++; - swap3(i, hptr, j); - i = lptr += 1; - goto begin; - } - swap2(i, j); - j -= 1; - i += 1; - continue; - } - j -= 1; - goto begin; - } - - if (i == lptr) { - if (lptr-base >= lim-hptr) { - qsort1(hptr+1, lim, f); - lim = lptr; - } else { - qsort1(base, lptr, f); - base = hptr+1; - } - goto top; - } - - lptr -= 1; - swap3(j, lptr, i); - j = hptr -= 1; - } -} - -int -xstrcmp(void *p1, void *p2) -{ - return (strcmp((char *)p1, (char *)p2)); -} - -/* Initialize a Getopt structure */ -void -ksh_getopt_reset(Getopt *go, int flags) -{ - go->optind = 1; - go->optarg = NULL; - go->p = 0; - go->flags = flags; - go->info = 0; - go->buf[1] = '\0'; -} - - -/* getopt() used for shell built-in commands, the getopts command, and - * command line options. - * A leading ':' in options means don't print errors, instead return '?' - * or ':' and set go->optarg to the offending option character. - * If GF_ERROR is set (and option doesn't start with :), errors result in - * a call to bi_errorf(). - * - * Non-standard features: - * - ';' is like ':' in options, except the argument is optional - * (if it isn't present, optarg is set to 0). - * Used for 'set -o'. - * - ',' is like ':' in options, except the argument always immediately - * follows the option character (optarg is set to the null string if - * the option is missing). - * Used for 'read -u2', 'print -u2' and fc -40. - * - '#' is like ':' in options, expect that the argument is optional - * and must start with a digit. If the argument doesn't start with a - * digit, it is assumed to be missing and normal option processing - * continues (optarg is set to 0 if the option is missing). - * Used for 'typeset -LZ4'. - * - accepts +c as well as -c IF the GF_PLUSOPT flag is present. If an - * option starting with + is accepted, the GI_PLUS flag will be set - * in go->info. - */ -int -ksh_getopt(char **argv, Getopt *go, const char *options) -{ - char c; - char *o; - - if (go->p == 0 || (c = argv[go->optind - 1][go->p]) == '\0') { - char *arg = argv[go->optind], flag = arg ? *arg : '\0'; - - go->p = 1; - if (flag == '-' && arg[1] == '-' && arg[2] == '\0') { - go->optind++; - go->p = 0; - go->info |= GI_MINUSMINUS; - return EOF; - } - if (arg == NULL - || ((flag != '-' ) /* neither a - nor a + (if + allowed) */ - && (!(go->flags & GF_PLUSOPT) || flag != '+')) - || (c = arg[1]) == '\0') - { - go->p = 0; - return EOF; - } - go->optind++; - go->info &= ~(GI_MINUS|GI_PLUS); - go->info |= flag == '-' ? GI_MINUS : GI_PLUS; - } - go->p++; - if (c == '?' || c == ':' || c == ';' || c == ',' || c == '#' - || !(o = strchr(options, c))) - { - if (options[0] == ':') { - go->buf[0] = c; - go->optarg = go->buf; - } else { - warningf(true, "%s%s-%c: unknown option", - (go->flags & GF_NONAME) ? "" : argv[0], - (go->flags & GF_NONAME) ? "" : ": ", c); - if (go->flags & GF_ERROR) - bi_errorf(null); - } - return '?'; - } - /* : means argument must be present, may be part of option argument - * or the next argument - * ; same as : but argument may be missing - * , means argument is part of option argument, and may be null. - */ - if (*++o == ':' || *o == ';') { - if (argv[go->optind - 1][go->p]) - go->optarg = argv[go->optind - 1] + go->p; - else if (argv[go->optind]) - go->optarg = argv[go->optind++]; - else if (*o == ';') - go->optarg = NULL; - else { - if (options[0] == ':') { - go->buf[0] = c; - go->optarg = go->buf; - return ':'; - } - warningf(true, "%s%s-'%c' requires argument", - (go->flags & GF_NONAME) ? "" : argv[0], - (go->flags & GF_NONAME) ? "" : ": ", c); - if (go->flags & GF_ERROR) - bi_errorf(null); - return '?'; - } - go->p = 0; - } else if (*o == ',') { - /* argument is attached to option character, even if null */ - go->optarg = argv[go->optind - 1] + go->p; - go->p = 0; - } else if (*o == '#') { - /* argument is optional and may be attached or unattached - * but must start with a digit. optarg is set to 0 if the - * argument is missing. - */ - if (argv[go->optind - 1][go->p]) { - if (digit(argv[go->optind - 1][go->p])) { - go->optarg = argv[go->optind - 1] + go->p; - go->p = 0; - } else - go->optarg = NULL; - } else { - if (argv[go->optind] && digit(argv[go->optind][0])) { - go->optarg = argv[go->optind++]; - go->p = 0; - } else - go->optarg = NULL; - } - } - return c; -} - -/* print variable/alias value using necessary quotes - * (POSIX says they should be suitable for re-entry...) - * No trailing newline is printed. - */ -void -print_value_quoted(const char *s) -{ - const char *p; - int inquote = 0; - - /* Test if any quotes are needed */ - for (p = s; *p; p++) - if (ctype(*p, C_QUOTE)) - break; - if (!*p) { - shprintf("%s", s); - return; - } - for (p = s; *p; p++) { - if (*p == '\'') { - shprintf("'\\'" + 1 - inquote); - inquote = 0; - } else { - if (!inquote) { - shprintf("'"); - inquote = 1; - } - shf_putc(*p, shl_stdout); - } - } - if (inquote) - shprintf("'"); -} - -/* Print things in columns and rows - func() is called to format the ith - * element - */ -void -print_columns(struct shf *shf, int n, char *(*func) (void *, int, char *, int), void *arg, int max_width, int prefcol) -{ - char *str = (char *) alloc(max_width + 1, ATEMP); - int i; - int r, c; - int rows, cols; - int nspace; - - /* max_width + 1 for the space. Note that no space - * is printed after the last column to avoid problems - * with terminals that have auto-wrap. - */ - cols = x_cols / (max_width + 1); - if (!cols) - cols = 1; - rows = (n + cols - 1) / cols; - if (prefcol && n && cols > rows) { - int tmp = rows; - - rows = cols; - cols = tmp; - if (rows > n) - rows = n; - } - - nspace = (x_cols - max_width * cols) / cols; - if (nspace <= 0) - nspace = 1; - for (r = 0; r < rows; r++) { - for (c = 0; c < cols; c++) { - i = c * rows + r; - if (i < n) { - shf_fprintf(shf, "%-*s", - max_width, - (*func)(arg, i, str, max_width + 1)); - if (c + 1 < cols) - shf_fprintf(shf, "%*s", nspace, null); - } - } - shf_putchar('\n', shf); - } - afree(str, ATEMP); -} - -/* Strip any nul bytes from buf - returns new length (nbytes - # of nuls) */ -int -strip_nuls(char *buf, int nbytes) -{ - char *dst; - - /* nbytes check because some systems (older freebsd's) have a buggy - * memchr() - */ - if (nbytes && (dst = memchr(buf, '\0', nbytes))) { - char *end = buf + nbytes; - char *p, *q; - - for (p = dst; p < end; p = q) { - /* skip a block of nulls */ - while (++p < end && *p == '\0') - ; - /* find end of non-null block */ - if (!(q = memchr(p, '\0', end - p))) - q = end; - memmove(dst, p, q - p); - dst += q - p; - } - *dst = '\0'; - return dst - buf; - } - return nbytes; -} - -/* Like read(2), but if read fails due to non-blocking flag, resets flag - * and restarts read. - */ -int -blocking_read(int fd, char *buf, int nbytes) -{ - int ret; - int tried_reset = 0; - - while ((ret = read(fd, buf, nbytes)) < 0) { - if (!tried_reset && (errno == EAGAIN -#ifdef EWOULDBLOCK - || errno == EWOULDBLOCK -#endif /* EWOULDBLOCK */ - )) - { - int oerrno = errno; - if (reset_nonblock(fd) > 0) { - tried_reset = 1; - continue; - } - errno = oerrno; - } - break; - } - return ret; -} - -/* Reset the non-blocking flag on the specified file descriptor. - * Returns -1 if there was an error, 0 if non-blocking wasn't set, - * 1 if it was. - */ -int -reset_nonblock(int fd) -{ - int flags; - int blocking_flags; - - if ((flags = fcntl(fd, F_GETFL, 0)) < 0) - return -1; - /* With luck, the C compiler will reduce this to a constant */ - blocking_flags = 0; -#ifdef O_NONBLOCK - blocking_flags |= O_NONBLOCK; -#endif /* O_NONBLOCK */ -#ifdef O_NDELAY - blocking_flags |= O_NDELAY; -#else /* O_NDELAY */ -# ifndef O_NONBLOCK - blocking_flags |= FNDELAY; /* hope this exists... */ -# endif /* O_NONBLOCK */ -#endif /* O_NDELAY */ - if (!(flags & blocking_flags)) - return 0; - flags &= ~blocking_flags; - if (fcntl(fd, F_SETFL, flags) < 0) - return -1; - return 1; -} - - -#ifndef MAXPATHLEN -# define MAXPATHLEN PATH -#endif /* MAXPATHLEN */ - -/* Like getcwd(), except bsize is ignored if buf is 0 (MAXPATHLEN is used) */ -char * -ksh_get_wd(char *buf, int bsize) -{ -#ifdef HAVE_GETCWD - char *b; - char *ret; - - /* Assume getcwd() available */ - if (!buf) { - bsize = MAXPATHLEN; - b = alloc(MAXPATHLEN + 1, ATEMP); - } else - b = buf; - - ret = getcwd(b, bsize); - - if (!buf) { - if (ret) - ret = aresize(b, strlen(b) + 1, ATEMP); - else - afree(b, ATEMP); - } - - return ret; -#else /* HAVE_GETCWD */ - extern char *getwd(char *); - char *b; - int len; - - /* Before memory allocated */ - HPUX_GETWD_BUG_CODE - - if (buf && bsize > MAXPATHLEN) - b = buf; - else - b = alloc(MAXPATHLEN + 1, ATEMP); - if (!getwd(b)) { - errno = EACCES; - if (b != buf) - afree(b, ATEMP); - return NULL; - } - len = strlen(b) + 1; - if (!buf) - b = aresize(b, len, ATEMP); - else if (buf != b) { - if (len > bsize) { - errno = ERANGE; - return NULL; - } - memcpy(buf, b, len); - afree(b, ATEMP); - b = buf; - } - - return b; -#endif /* HAVE_GETCWD */ -} - -#if !defined(HAVE_SETSID) -#define NO_CHVT "setsid not implemented" -#elif !defined(TIOCSCTTY) -#define NO_CHVT "no TIOCSCTTY ioctl" -#else -static char * -chvt(char *f) -{ - int fd; - - if (chown(f, 0, 0)) - return "chown"; - if (chmod(f, 0600)) - return "chmod"; -#if defined(HAVE_REVOKE) && !defined(linux) - if (revoke(f)) - return "revoke"; -#endif - - if ((fd = open(f, O_RDWR)) == -1) { - sleep(1); - if ((fd = open(f, O_RDWR)) == -1) - return "open"; - } - switch (fork()) { - case -1: - return "fork"; - case 0: - break; - default: - _exit(0); - } - if (setsid() == -1) - return "setsid"; - if (ioctl(fd, TIOCSCTTY, NULL) == -1) - return "ioctl"; - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - if (fd > 2) - close(fd); - - return NULL; -} -#endif - -static int -parse_T(char *fn) -{ -#ifdef NO_CHVT - warningf(0, "chvt: %s", NO_CHVT); - return -1; -#else - char *rv, dv[20]; - struct stat sb; - - strlcpy(dv, fn, 20); - if (stat(dv, &sb)) { - snprintf(dv, 20, "/dev/ttyC%s", fn); - if (stat(dv, &sb)) { - snprintf(dv, 20, "/dev/tty%s", fn); - if (stat(dv, &sb)) { - warningf(0, "chvt: can't find tty %s", fn); - return -1; - } - } - } - if (!(sb.st_mode & S_IFCHR)) { - warningf(0, "chvt: not a char device: %s", fn); - return -1; - } - if ((rv = chvt(dv)) != NULL) { - warningf(0, "chvt: failed to %s: %s", rv, strerror(errno)); - return -1; - } - return 0; -#endif -} diff --git a/missing.c b/missing.c deleted file mode 100644 index 4b6bfc0..0000000 --- a/missing.c +++ /dev/null @@ -1,148 +0,0 @@ -/** $MirOS: src/bin/ksh/missing.c,v 1.1.7.1 2005/03/06 15:42:54 tg Exp $ */ -/* $OpenBSD: missing.c,v 1.5 2003/05/16 18:49:46 jsyn Exp $ */ - -/* - * Routines which may be missing on some machines - */ - -#include "sh.h" -#include "ksh_stat.h" - -__RCSID("$MirOS: src/bin/ksh/missing.c,v 1.1.7.1 2005/03/06 15:42:54 tg Exp $"); - -#ifndef HAVE_STRERROR -char * -strerror(err) - int err; -{ - static char buf[64]; - switch (err) { - case EINVAL: - return "Invalid argument"; - case EACCES: - return "Permission denied"; - case ESRCH: - return "No such process"; - case EPERM: - return "Not owner"; - case ENOENT: - return "No such file or directory"; - case ENOTDIR: - return "Not a directory"; - case ENOEXEC: - return "Exec format error"; - case ENOMEM: - return "Not enough memory"; - case E2BIG: - return "Argument list too long"; - default: - shf_snprintf(buf, sizeof(buf), "Unknown system error %d", err); - return buf; - } -} -#endif /* !HAVE_STRERROR */ - -#ifdef OPENDIR_DOES_NONDIR -/* Prevent opendir() from attempting to open non-directories. Such - * behavior can cause problems if it attempts to open special devices... - */ -DIR * -ksh_opendir(d) - const char *d; -{ - struct stat statb; - - if (stat(d, &statb) != 0) - return NULL; - if (!S_ISDIR(statb.st_mode)) { - errno = ENOTDIR; - return NULL; - } - return opendir(d); -} -#endif /* OPENDIR_DOES_NONDIR */ - -#ifndef HAVE_DUP2 -int -dup2(oldd, newd) - int oldd; - int newd; -{ - int old_errno; - - if (fcntl(oldd, F_GETFL, 0) == -1) - return -1; /* errno == EBADF */ - - if (oldd == newd) - return newd; - - old_errno = errno; - - close(newd); /* in case its open */ - - errno = old_errno; - - return fcntl(oldd, F_DUPFD, newd); -} -#endif /* !HAVE_DUP2 */ - -/* - * Random functions - */ - -#ifndef HAVE_SRANDOM -#undef HAVE_RANDOM -#endif - -int rnd_state; - -void -rnd_seed(long newval) -{ - rnd_put(newval); - rnd_state = 0; -} - -long -rnd_get(void) -{ -#ifdef HAVE_ARC4RANDOM - if (!rnd_state) - return arc4random() & 0x7FFF; -#endif -#ifdef HAVE_RANDOM - return random() & 0x7FFF; -#else - return rand(); -#endif -} - -void -rnd_put(long newval) -{ - long sv; - - rnd_state = 1 | rnd_get(); - sv = (rnd_get() << (newval & 7)) ^ newval; - -#if defined(HAVE_ARC4RANDOM_PUSH) - arc4random_push(sv); -#elif defined(HAVE_ARC4RANDOM_ADDRANDOM) - arc4random_addrandom((unsigned char *)&sv, sizeof(sv)); -#endif -#ifdef HAVE_ARC4RANDOM - sv ^= arc4random(); -#endif - -#ifdef HAVE_RANDOM - srandom(sv); -#else - srand(sv); -#endif - - while (rnd_state) { - rnd_get(); - rnd_state >>= 1; - } - rnd_state = 1; -} diff --git a/path.c b/path.c deleted file mode 100644 index 9dab863..0000000 --- a/path.c +++ /dev/null @@ -1,309 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: path.c,v 1.9 2003/10/22 07:40:38 jmc Exp $ */ - -#include "sh.h" -#include "ksh_stat.h" - -__RCSID("$MirOS$"); - -/* - * Contains a routine to search a : separated list of - * paths (a la CDPATH) and make appropriate file names. - * Also contains a routine to simplify .'s and ..'s out of - * a path name. - * - * Larry Bouzane (larry@cs.mun.ca) - */ - -#ifdef S_ISLNK -static char *do_phys_path(XString *xsp, char *xp, const char *path); -#endif /* S_ISLNK */ - -/* - * Makes a filename into result using the following algorithm. - * - make result NULL - * - if file starts with '/', append file to result & set cdpathp to NULL - * - if file starts with ./ or ../ append cwd and file to result - * and set cdpathp to NULL - * - if the first element of cdpathp doesnt start with a '/' xx or '.' xx - * then cwd is appended to result. - * - the first element of cdpathp is appended to result - * - file is appended to result - * - cdpathp is set to the start of the next element in cdpathp (or NULL - * if there are no more elements. - * The return value indicates whether a non-null element from cdpathp - * was appended to result. - */ -int -make_path(const char *cwd, const char *file, char **cdpathp, XString *xsp, int *phys_pathp) - - - /* & of : separated list */ - - -{ - int rval = 0; - int use_cdpath = 1; - char *plist; - int len; - int plen = 0; - char *xp = Xstring(*xsp, xp); - - if (!file) - file = null; - - if (!ISRELPATH(file)) { - *phys_pathp = 0; - use_cdpath = 0; - } else { - if (file[0] == '.') { - char c = file[1]; - - if (c == '.') - c = file[2]; - if (ISDIRSEP(c) || c == '\0') - use_cdpath = 0; - } - - plist = *cdpathp; - if (!plist) - use_cdpath = 0; - else if (use_cdpath) { - char *pend; - - for (pend = plist; *pend && *pend != PATHSEP; pend++) - ; - plen = pend - plist; - *cdpathp = *pend ? ++pend : NULL; - } - - if ((use_cdpath == 0 || !plen || ISRELPATH(plist)) - && (cwd && *cwd)) - { - len = strlen(cwd); - XcheckN(*xsp, xp, len); - memcpy(xp, cwd, len); - xp += len; - if (!ISDIRSEP(cwd[len - 1])) - Xput(*xsp, xp, DIRSEP); - } - *phys_pathp = Xlength(*xsp, xp); - if (use_cdpath && plen) { - XcheckN(*xsp, xp, plen); - memcpy(xp, plist, plen); - xp += plen; - if (!ISDIRSEP(plist[plen - 1])) - Xput(*xsp, xp, DIRSEP); - rval = 1; - } - } - - len = strlen(file) + 1; - XcheckN(*xsp, xp, len); - memcpy(xp, file, len); - - if (!use_cdpath) - *cdpathp = NULL; - - return rval; -} - -/* - * Simplify pathnames containing "." and ".." entries. - * ie, simplify_path("/a/b/c/./../d/..") returns "/a/b" - */ -void -simplify_path(char *path) -{ - char *cur; - char *t; - int isrooted; - char *very_start = path; - char *start; - - if (!*path) - return; - - if ((isrooted = ISROOTEDPATH(path))) - very_start++; -#if defined (__CYGWIN__) - if (path[0] && path[1] == ':') /* skip a: */ - very_start += 2; -#endif - - /* Before After - * /foo/ /foo - * /foo/../../bar /bar - * /foo/./blah/.. /foo - * . . - * .. .. - * ./foo foo - * foo/../../../bar ../../bar - * CYGWIN: - * a:/foo/../.. a:/ - * a:. a: - * a:.. a:.. - * a:foo/../../blah a:../blah - */ - -#ifdef __CYGWIN__ - /* preserve leading double-slash on pathnames (for UNC paths) */ - if (path[0] && ISDIRSEP(path[0]) && path[1] && ISDIRSEP(path[1])) - very_start++; -#endif /* __CYGWIN__ */ - - for (cur = t = start = very_start; ; ) { - /* treat multiple '/'s as one '/' */ - while (ISDIRSEP(*t)) - t++; - - if (*t == '\0') { - if (cur == path) - /* convert empty path to dot */ - *cur++ = '.'; - *cur = '\0'; - break; - } - - if (t[0] == '.') { - if (!t[1] || ISDIRSEP(t[1])) { - t += 1; - continue; - } else if (t[1] == '.' && (!t[2] || ISDIRSEP(t[2]))) { - if (!isrooted && cur == start) { - if (cur != very_start) - *cur++ = DIRSEP; - *cur++ = '.'; - *cur++ = '.'; - start = cur; - } else if (cur != start) - while (--cur > start && !ISDIRSEP(*cur)) - ; - t += 2; - continue; - } - } - - if (cur != very_start) - *cur++ = DIRSEP; - - /* find/copy next component of pathname */ - while (*t && !ISDIRSEP(*t)) - *cur++ = *t++; - } -} - - -void -set_current_wd(char *path) -{ - int len; - char *p = path; - - if (!p && !(p = ksh_get_wd(NULL, 0))) - p = null; - - len = strlen(p) + 1; - - if (len > current_wd_size) - current_wd = aresize(current_wd, current_wd_size = len, APERM); - memcpy(current_wd, p, len); - if (p != path && p != null) - afree(p, ATEMP); -} - -#ifdef S_ISLNK -char * -get_phys_path(const char *path) -{ - XString xs; - char *xp; - - Xinit(xs, xp, strlen(path) + 1, ATEMP); - - xp = do_phys_path(&xs, xp, path); - - if (!xp) - return NULL; - - if (Xlength(xs, xp) == 0) - Xput(xs, xp, DIRSEP); - Xput(xs, xp, '\0'); - - return Xclose(xs, xp); -} - -static char * -do_phys_path(XString *xsp, char *xp, const char *path) -{ - const char *p, *q; - size_t len; - int savepos, llen; - char lbuf[PATH_MAX]; - - Xcheck(*xsp, xp); - for (p = path; p; p = q) { - while (ISDIRSEP(*p)) - p++; - if (!*p) - break; - len = (q = ksh_strchr_dirsep(p)) ? (size_t)(q - p) : strlen(p); - if (len == 1 && p[0] == '.') - continue; - if (len == 2 && p[0] == '.' && p[1] == '.') { - while (xp > Xstring(*xsp, xp)) { - xp--; - if (ISDIRSEP(*xp)) - break; - } - continue; - } - - savepos = Xsavepos(*xsp, xp); - Xput(*xsp, xp, DIRSEP); - XcheckN(*xsp, xp, len + 1); - memcpy(xp, p, len); - xp += len; - *xp = '\0'; - - llen = readlink(Xstring(*xsp, xp), lbuf, sizeof(lbuf) - 1); - if (llen < 0) { - /* EINVAL means it wasn't a symlink... */ - if (errno != EINVAL) - return NULL; - continue; - } - lbuf[llen] = '\0'; - - /* If absolute path, start from scratch.. */ - xp = ISABSPATH(lbuf) ? Xstring(*xsp, xp) - : Xrestpos(*xsp, xp, savepos); - if (!(xp = do_phys_path(xsp, xp, lbuf))) - return NULL; - } - return xp; -} -#endif /* S_ISLNK */ - -#ifdef TEST - -main(argc, argv) -{ - int rv; - char *cp, cdpath[256], pwd[256], file[256], result[256]; - - printf("enter CDPATH: "); gets(cdpath); - printf("enter PWD: "); gets(pwd); - while (1) { - if (printf("Enter file: "), gets(file) == 0) - return 0; - cp = cdpath; - do { - rv = make_path(pwd, file, &cp, result, sizeof(result)); - printf("make_path returns (%d), \"%s\" ", rv, result); - simplify_path(result); - printf("(simpifies to \"%s\")\n", result); - } while (cp); - } -} -#endif /* TEST */ diff --git a/proto.h b/proto.h deleted file mode 100644 index 59c4f16..0000000 --- a/proto.h +++ /dev/null @@ -1,297 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: proto.h,v 1.11 2003/05/16 19:58:57 jsyn Exp $ */ -/* $From: proto.h,v 1.3 1994/05/19 18:32:40 michael Exp michael $ */ - -#ifndef PROTO_H -/* $OpenBSD: proto.h,v 1.18 2004/12/18 22:35:41 millert Exp $ */ - -/* - * prototypes for PD-KSH - * originally generated using "cproto.c 3.5 92/04/11 19:28:01 cthuang" - */ - -/* alloc.c */ -Area * ainit(Area *ap); -void afreeall(Area *ap); -void * alloc(size_t size, Area *ap); -void * aresize(void *ptr, size_t size, Area *ap); -void afree(void *ptr, Area *ap); -/* c_ksh.c */ -int c_hash(char **wp); -int c_cd(char **wp); -int c_pwd(char **wp); -int c_print(char **wp); -int c_whence(char **wp); -int c_command(char **wp); -int c_typeset(char **wp); -int c_alias(char **wp); -int c_unalias(char **wp); -int c_let(char **wp); -int c_jobs(char **wp); -int c_fgbg(char **wp); -int c_kill(char **wp); -void getopts_reset(int val); -int c_getopts(char **wp); -int c_bind(char **wp); -/* c_sh.c */ -int c_label(char **wp); -int c_shift(char **wp); -int c_umask(char **wp); -int c_dot(char **wp); -int c_wait(char **wp); -int c_read(char **wp); -int c_eval(char **wp); -int c_trap(char **wp); -int c_brkcont(char **wp); -int c_exitreturn(char **wp); -int c_set(char **wp); -int c_unset(char **wp); -int c_ulimit(char **wp); -int c_times(char **wp); -int timex(struct op *t, int f); -void timex_hook(struct op *t, char ** volatile *app); -int c_exec(char **wp); -int c_builtin(char **wp); -/* c_test.c */ -int c_test(char **wp); -/* edit.c: most prototypes in edit.h */ -void x_init(void); -int x_read(char *buf, size_t len); -void set_editmode(const char *ed); -/* emacs.c: most prototypes in edit.h */ -int x_bind(const char *a1, const char *a2, int macro, - int list); -/* eval.c */ -char * substitute(const char *cp, int f); -char ** eval(char **ap, int f); -char * evalstr(char *cp, int f); -char * evalonestr(char *cp, int f); -char *debunk(char *dp, const char *sp, size_t dlen); -void expand(char *cp, XPtrV *wp, int f); -int glob_str(char *cp, XPtrV *wp, int markdirs); -/* exec.c */ -int execute(struct op * volatile t, volatile int flags); -int shcomexec(char **wp); -struct tbl * findfunc(const char *name, unsigned int h, int create); -int define(const char *name, struct op *t); -void builtin(const char *name, int (*func)(char **)); -struct tbl * findcom(const char *name, int flags); -void flushcom(int all); -char * search(const char *name, const char *path, int mode, - int *errnop); -int search_access(const char *path, int mode, int *errnop); -int pr_menu(char *const *ap); -int pr_list(char *const *ap); -/* expr.c */ -int evaluate(const char *expr, long *rval, int error_ok); -int v_evaluate(struct tbl *vp, const char *expr, volatile int error_ok); -/* history.c */ -void init_histvec(void); -void hist_init(Source *s); -void hist_finish(void); -void histsave(int lno, const char *cmd, int dowrite); -int c_fc(char **wp); -void sethistsize(int n); -void sethistfile(const char *name); -#ifdef EASY_HISTORY -void histappend(const char *cmd, int nl_separate); -#endif -char ** histpos(void); -int histN(void); -int histnum(int n); -int findhist(int start, int fwd, const char *str, - int anchored); -/* io.c */ -void errorf(const char *fmt, ...) - GCC_FUNC_ATTR2(noreturn, format(printf, 1, 2)); -void warningf(int fileline, const char *fmt, ...) - GCC_FUNC_ATTR(format(printf, 2, 3)); -void bi_errorf(const char *fmt, ...) - GCC_FUNC_ATTR(format(printf, 1, 2)); -void internal_errorf(int jump, const char *fmt, ...) - GCC_FUNC_ATTR(format(printf, 2, 3)); -void error_prefix(int fileline); -void shellf(const char *fmt, ...) - GCC_FUNC_ATTR(format(printf, 1, 2)); -void shprintf(const char *fmt, ...) - GCC_FUNC_ATTR(format(printf, 1, 2)); -#ifdef KSH_DEBUG -void kshdebug_init_(void); -void kshdebug_printf_(const char *fmt, ...) - GCC_FUNC_ATTR(format(printf, 1, 2)); -void kshdebug_dump_(const char *str, const void *mem, int nbytes); -#endif /* KSH_DEBUG */ -int can_seek(int fd); -void initio(void); -int ksh_dup2(int ofd, int nfd, int errok); -int savefd(int fd, int noclose); -void restfd(int fd, int ofd); -void openpipe(int *pv); -void closepipe(int *pv); -int check_fd(char *name, int mode, const char **emsgp); -void coproc_init(void); -void coproc_read_close(int fd); -void coproc_readw_close(int fd); -void coproc_write_close(int fd); -int coproc_getfd(int mode, const char **emsgp); -void coproc_cleanup(int reuse); -struct temp *maketemp(Area *ap, Temp_type type, struct temp **tlist); -/* jobs.c */ -void j_init(int mflagset); -void j_exit(void); -void j_change(void); -int exchild(struct op *t, int flags, int close_fd); -void startlast(void); -int waitlast(void); -int waitfor(const char *cp, int *sigp); -int j_kill(const char *cp, int sig); -int j_resume(const char *cp, int bg); -int j_jobs(const char *cp, int slp, int nflag); -void j_notify(void); -pid_t j_async(void); -int j_stopped_running(void); -/* lex.c */ -int yylex(int cf); -void yyerror(const char *fmt, ...) - GCC_FUNC_ATTR2(noreturn, format(printf, 1, 2)); -Source * pushs(int type, Area *areap); -void set_prompt(int to, Source *s); -void pprompt(const char *cp, int ntruncate); -/* main.c */ -int include(const char *name, int argc, char **argv, - int intr_ok); -int command(const char *comm); -int shell(Source *volatile s, int volatile toplevel); -void unwind(int i) GCC_FUNC_ATTR(noreturn); -void newenv(int type); -void quitenv(struct shf *shf); -void cleanup_parents_env(void); -void cleanup_proc_env(void); -void aerror(Area *ap, const char *msg) - GCC_FUNC_ATTR(noreturn); -/* misc.c */ -void setctypes(const char *s, int t); -void initctypes(void); -char * ulton(unsigned long n, int base); -char * str_save(const char *s, Area *ap); -char * str_nsave(const char *s, int n, Area *ap); -int option(const char *n); -char * getoptions(void); -void change_flag(enum sh_flag f, int what, int newval); -int parse_args(char **argv, int what, int *setargsp); -int getn(const char *as, int *ai); -int bi_getn(const char *as, int *ai); -int gmatch(const char *s, const char *p, int isfile); -int has_globbing(const char *xp, const char *xpe); -const unsigned char *pat_scan(const unsigned char *p, - const unsigned char *pe, int match_sep); -void qsortp(void **base, size_t n, int (*f)(void *, void *)); -int xstrcmp(void *p1, void *p2); -void ksh_getopt_reset(Getopt *go, int); -int ksh_getopt(char **argv, Getopt *go, const char *options); -void print_value_quoted(const char *s); -void print_columns(struct shf *shf, int n, - char *(*func)(void *, int, char *, int), - void *arg, int max_width, int prefcol); -int strip_nuls(char *buf, int nbytes); -int blocking_read(int fd, char *buf, int nbytes); -int reset_nonblock(int fd); -char *ksh_get_wd(char *buf, int bsize); -/* missing.c */ -long rnd_get(void); -void rnd_put(long); -void rnd_seed(long); -/* path.c */ -int make_path(const char *cwd, const char *file, - char **pathlist, XString *xsp, int *phys_pathp); -void simplify_path(char *path); -char *get_phys_path(const char *path); -void set_current_wd(char *path); -/* syn.c */ -void initkeywords(void); -struct op * compile(Source *s); -/* table.c */ -unsigned int hash(const char *n); -void tinit(struct table *tp, Area *ap, int tsize); -struct tbl * tsearch(struct table *tp, const char *n, unsigned int h); -struct tbl * tenter(struct table *tp, const char *n, unsigned int h); -void tdelete(struct tbl *p); -void twalk(struct tstate *ts, struct table *tp); -struct tbl * tnext(struct tstate *ts); -struct tbl ** tsort(struct table *tp); -/* trace.c */ -/* trap.c */ -void inittraps(void); -void alarm_init(void); -Trap * gettrap(const char *name, int igncase); -RETSIGTYPE trapsig(int i); -void intrcheck(void); -int fatal_trap_check(void); -int trap_pending(void); -void runtraps(int intr); -void runtrap(Trap *p); -void cleartraps(void); -void restoresigs(void); -void settrap(Trap *p, char *s); -int block_pipe(void); -void restore_pipe(int restore_dfl); -int setsig(Trap *p, sig_t f, int flags); -void setexecsig(Trap *p, int restore); -/* tree.c */ -int fptreef(struct shf *f, int indent, const char *fmt, ...); -char * snptreef(char *s, int n, const char *fmt, ...); -struct op * tcopy(struct op *t, Area *ap); -char * wdcopy(const char *wp, Area *ap); -char * wdscan(const char *wp, int c); -char * wdstrip(const char *wp); -void tfree(struct op *t, Area *ap); -/* var.c */ -void newblock(void); -void popblock(void); -void initvar(void); -struct tbl * global(const char *n); -struct tbl * local(const char *n, bool copy); -char * str_val(struct tbl *vp); -long intval(struct tbl *vp); -int setstr(struct tbl *vq, const char *s, int error_ok); -struct tbl *setint_v(struct tbl *vq, struct tbl *vp); -void setint(struct tbl *vq, long n); -int getint(struct tbl *vp, long *nump); -struct tbl * typeset(const char *var, Tflag set, Tflag clr, int field, int base); -void unset(struct tbl *vp, int array_ref); -char * skip_varname(const char *s, int aok); -char *skip_wdvarname(const char *s, int aok); -int is_wdvarname(const char *s, int aok); -int is_wdvarassign(const char *s); -char ** makenv(void); -void change_random(void); -int array_ref_len(const char *cp); -char * arrayname(const char *str); -void set_array(const char *var, int reset, char **vals); -/* version.c */ -/* vi.c: see edit.h */ - - -/* Hack to avoid billions of compile warnings on SunOS 4.1.x */ -#if defined(MUN) && defined(sun) && !defined(__svr4__) -extern void bcopy(const void *src, void *dst, size_t size); -extern int fclose(FILE *fp); -extern int fprintf(FILE *fp, const char *fmt, ...); -extern int fread(void *buf, int size, int num, FILE *fp); -extern int ioctl(int fd, int request, void *arg); -extern int killpg(int pgrp, int sig); -extern int nice(int n); -extern int readlink(const char *path, char *buf, int bufsize); -extern int setpgrp(int pid, int pgrp); -extern int strcasecmp(const char *s1, const char *s2); -extern int tolower(int); -extern int toupper(int); -/* Include files aren't included yet */ -extern int getrlimit( /* int resource, struct rlimit *rpl */ ); -extern int getrusage( /* int who, struct rusage *rusage */ ); -extern int gettimeofday( /* struct timeval *tv, struct timezone *tz */ ); -extern int setrlimit( /* int resource, struct rlimit *rlp */ ); -extern int lstat( /* const char *path, struct stat *buf */ ); -#endif - -#endif /* ndef PROTO_H */ diff --git a/sh.h b/sh.h deleted file mode 100644 index ad95ed3..0000000 --- a/sh.h +++ /dev/null @@ -1,660 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: sh.h,v 1.23 2004/12/18 22:11:43 millert Exp $ */ -/* $From: sh.h,v 1.2 1994/05/19 18:32:40 michael Exp michael $ */ - -#ifndef SH_H -#define SH_H - -/* - * mirbsdksh - MirOS Project Korn-Shell - * from: Public Domain Bourne/Korn shell - */ - -#include "config.h" /* system and option configuration info */ - -/* Start of common headers */ - -#include -#include -#include -#ifdef HAVE_STDDEF_H -# include -#endif - -#ifdef HAVE_STDLIB_H -# include -#else -/* just a useful subset of what stdlib.h would have */ -extern char * getenv(const char *); -extern void * malloc(size_t); -extern void * realloc(void *, size_t); -extern int free(void *); -extern int exit(int); -extern int atoi(const char *); -#endif /* HAVE_STDLIB_H */ - -#ifdef HAVE_UNISTD_H -# include -#else -/* just a useful subset of what unistd.h would have */ -extern int access(const char *, int); -extern int open(const char *, int, ...); -extern int creat(const char *, mode_t); -extern int read(int, char *, unsigned); -extern int write(int, const char *, unsigned); -extern off_t lseek(int, off_t, int); -extern int close(int); -extern int pipe(int []); -extern int dup2(int, int); -extern int unlink(const char *); -extern int fork(void); -extern int execve(const char *, char * const[], char * const[]); -extern int chdir(const char *); -extern int kill(pid_t, int); -extern char *getcwd(); /* no ARGS here - differs on different machines */ -extern int geteuid(void); -extern int readlink(const char *, char *, int); -extern int getegid(void); -extern int getpid(void); -extern int getppid(void); -extern unsigned int sleep(unsigned int); -extern int isatty(int); -# ifdef POSIX_PGRP -extern int getpgrp(void); -extern int setpgid(pid_t, pid_t); -# endif /* POSIX_PGRP */ -# ifdef BSD_PGRP -extern int getpgrp(pid_t); -extern int setpgrp(pid_t, pid_t); -# endif /* BSD_PGRP */ -# ifdef SYSV_PGRP -extern int getpgrp(void); -extern int setpgrp(void); -# endif /* SYSV_PGRP */ -#endif /* HAVE_UNISTD_H */ - -#ifdef HAVE_STRING_H -# include -#else -# include -# define strchr index -# define strrchr rindex -#endif /* HAVE_STRING_H */ -#ifndef HAVE_STRSTR -char *strstr(const char *s, const char *p); -#endif /* HAVE_STRSTR */ -#ifndef HAVE_STRCASECMP -int strcasecmp(const char *s1, const char *s2); -int strncasecmp(const char *s1, const char *s2, int n); -#endif /* HAVE_STRCASECMP */ - -#ifdef HAVE_MEMORY_H -# include -#endif -#ifndef HAVE_MEMSET -# define memcpy(d, s, n) bcopy(s, d, n) -# define memcmp(s1, s2, n) bcmp(s1, s2, n) -void *memset(void *d, int c, size_t n); -#endif /* HAVE_MEMSET */ -#ifndef HAVE_MEMMOVE -# ifdef HAVE_BCOPY -# define memmove(d, s, n) bcopy(s, d, n) -# else -void *memmove(void *d, const void *s, size_t n); -# endif -#endif /* HAVE_MEMMOVE */ - -# include -# define SH_VA_START(va, argn) va_start(va, argn) - -#include - -#ifdef HAVE_FCNTL_H -# include -#else -# include -#endif /* HAVE_FCNTL_H */ -#ifndef O_ACCMODE -# define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR) -#endif /* !O_ACCMODE */ - -#ifndef F_OK /* access() arguments */ -# define F_OK 0 -# define X_OK 1 -# define W_OK 2 -# define R_OK 4 -#endif /* !F_OK */ - -#ifndef SEEK_SET -# ifdef L_SET -# define SEEK_SET L_SET -# define SEEK_CUR L_INCR -# define SEEK_END L_XTND -# else /* L_SET */ -# define SEEK_SET 0 -# define SEEK_CUR 1 -# define SEEK_END 2 -# endif /* L_SET */ -#endif /* !SEEK_SET */ - -#ifdef HAVE_LIMITS_H -# include -#endif /* HAVE_LIMITS_H */ - -#include -#ifndef NSIG -#define NSIG 32 -#endif - -#ifdef HAVE_PATHS_H -# include -#endif /* HAVE_PATHS_H */ -#ifdef _PATH_DEFPATH -# define DEFAULT__PATH _PATH_DEFPATH -#else /* _PATH_DEFPATH */ -# define DEFAULT__PATH DEFAULT_PATH -#endif /* _PATH_DEFPATH */ - -#ifndef offsetof -# define offsetof(type,id) ((size_t)&((type*)NULL)->id) -#endif - -#ifndef HAVE_KILLPG -# define killpg(p, s) kill(-(p), (s)) -#endif /* !HAVE_KILLPG */ - -/* Special cases for execve(2) */ -# if defined(OS_ISC) && defined(_POSIX_SOURCE) -/* Kludge for ISC 3.2 (and other versions?) so programs will run correctly. */ -# define ksh_execve(p, av, ev, flags) \ - do { \ - __setostype(0); \ - execve(p, av, ev); \ - __setostype(1); \ - } while (0) -# else /* OS_ISC && _POSIX */ -# define ksh_execve(p, av, ev, flags) execve(p, av, ev) -# endif /* OS_ISC && _POSIX */ - -/* this is a hang-over from older versions of the os2 port */ -#define ksh_dupbase(fd, base) fcntl(fd, F_DUPFD, base) - -#if defined(__sun__) && defined(__svr4__) -typedef void (*sig_t)(); -#endif - -#ifdef HAVE_SIGSETJMP -# define ksh_sigsetjmp(env,sm) sigsetjmp((env), (sm)) -# define ksh_siglongjmp(env,v) siglongjmp((env), (v)) -# define ksh_jmp_buf sigjmp_buf -#else /* HAVE_SIGSETJMP */ -# ifdef HAVE__SETJMP -# define ksh_sigsetjmp(env,sm) _setjmp(env) -# define ksh_siglongjmp(env,v) _longjmp((env), (v)) -# else /* HAVE__SETJMP */ -# define ksh_sigsetjmp(env,sm) setjmp(env) -# define ksh_siglongjmp(env,v) longjmp((env), (v)) -# endif /* HAVE__SETJMP */ -# define ksh_jmp_buf jmp_buf -#endif /* HAVE_SIGSETJMP */ - -#ifndef HAVE_DUP2 -extern int dup2(int, int); -#endif /* !HAVE_DUP2 */ - -/* Find a integer type that is at least 32 bits (or die) - SIZEOF_* defined - * by autoconf (assumes an 8 bit byte, but I'm not concerned). - * NOTE: INT32 may end up being more than 32 bits. - */ -# define INT32 int - -/* end of common headers */ - -/* Stop gcc and lint from complaining about possibly uninitialized variables */ -#if defined(__GNUC__) || defined(lint) -# define UNINITIALIZED(var) var = 0 -#else -# define UNINITIALIZED(var) var -#endif /* GNUC || lint */ - -/* some useful #defines */ -#ifdef EXTERN -# define I__(i) = i -#else -# define I__(i) -# define EXTERN extern -# define EXTERN_DEFINED -#endif - -#ifndef EXECSHELL -/* shell to exec scripts (see also $SHELL initialization in main.c) */ -# ifdef _PATH_BSHELL -# define EXECSHELL _PATH_BSHELL -# else -# define EXECSHELL "/bin/mksh" -# endif -# define EXECSHELL_STR "EXECSHELL" -#endif - -/* ISABSPATH() means path is fully and completely specified, - * ISROOTEDPATH() means a .. as the first component is a no-op, - * ISRELPATH() means $PWD can be tacked on to get an absolute path. - * - * OS Path ISABSPATH ISROOTEDPATH ISRELPATH - * unix /foo yes yes no - * unix foo no no yes - * unix ../foo no no yes - * os2+cyg a:/foo yes yes no - * os2+cyg a:foo no no no - * os2+cyg /foo no yes no - * os2+cyg foo no no yes - * os2+cyg ../foo no no yes - * cyg //foo yes yes no - */ -# define PATHSEP ':' -# define DIRSEP '/' -# define DIRSEPSTR "/" -# define ISDIRSEP(c) ((c) == '/') -#ifdef __CYGWIN__ -# define ISABSPATH(s) \ - (((s)[0] && (s)[1] == ':' && ISDIRSEP((s)[2])) || ISDIRSEP((s)[0])) -# define ISRELPATH(s) (!(s)[0] || ((s)[1] != ':' && !ISDIRSEP((s)[0]))) -#else /* __CYGWIN__ */ -# define ISABSPATH(s) ISDIRSEP((s)[0]) -# define ISRELPATH(s) (!ISABSPATH(s)) -#endif /* __CYGWIN__ */ -# define ISROOTEDPATH(s) ISABSPATH(s) -# define FILECHCONV(c) c -# define FILECMP(s1, s2) strcmp(s1, s2) -# define FILENCMP(s1, s2, n) strncmp(s1, s2, n) -# define ksh_strchr_dirsep(p) strchr(p, DIRSEP) -# define ksh_strrchr_dirsep(p) strrchr(p, DIRSEP) - -#define NELEM(a) (sizeof(a) / sizeof((a)[0])) -#define sizeofN(type, n) (sizeof(type) * (n)) -#define BIT(i) (1<<(i)) /* define bit in flag */ - -/* Table flag type - needs > 16 and < 32 bits */ -typedef INT32 Tflag; - -#define NUFILE 32 /* Number of user-accessible files */ -#define FDBASE 10 /* First file usable by Shell */ - -/* you're not going to run setuid shell scripts, are you? */ -#define eaccess(path, mode) access(path, mode) - -/* Make MAGIC a char that might be printed to make bugs more obvious, but - * not a char that is used often. Also, can't use the high bit as it causes - * portability problems (calling strchr(x, 0x80|'x') is error prone). - */ -#define MAGIC (7) /* prefix for *?[!{,} during expand */ -#define ISMAGIC(c) ((unsigned char)(c) == MAGIC) -#define NOT '!' /* might use ^ (ie, [!...] vs [^..]) */ - -#define LINE 4096 /* input line size */ -#ifndef PATH_MAX -#define PATH_MAX 1024 /* pathname size (todo: pathconf()) */ -#endif - -EXTERN const char *kshname; /* $0 */ -EXTERN pid_t kshpid; /* $$, shell pid */ -EXTERN pid_t procpid; /* pid of executing process */ -EXTERN uid_t ksheuid; /* effective uid of shell */ -EXTERN int exstat; /* exit status */ -EXTERN int subst_exstat; /* exit status of last $(..)/`..` */ -EXTERN const char *safe_prompt; /* safe prompt if PS1 substitution fails */ - -/* - * Area-based allocation built on malloc/free - */ -typedef struct Area { - struct link *freelist; /* free list */ -} Area; - -EXTERN Area aperm; /* permanent object space */ -#define APERM &aperm -#define ATEMP &e->area - -#ifdef MEM_DEBUG -# include "chmem.h" /* a debugging front end for malloc et. al. */ -#endif /* MEM_DEBUG */ - -#ifdef KSH_DEBUG -# define kshdebug_init() kshdebug_init_() -# define kshdebug_printf(a) kshdebug_printf_ a -# define kshdebug_dump(a) kshdebug_dump_ a -#else /* KSH_DEBUG */ -# define kshdebug_init() -# define kshdebug_printf(a) -# define kshdebug_dump(a) -#endif /* KSH_DEBUG */ - -/* - * parsing & execution environment - */ -EXTERN struct env { - short type; /* environment type - see below */ - short flags; /* EF_* */ - Area area; /* temporary allocation area */ - struct block *loc; /* local variables and functions */ - short *savefd; /* original redirected fd's */ - struct env *oenv; /* link to previous environment */ - ksh_jmp_buf jbuf; /* long jump back to env creator */ - struct temp *temps; /* temp files */ -} *e; - -/* struct env.type values */ -#define E_NONE 0 /* dummy environment */ -#define E_PARSE 1 /* parsing command # */ -#define E_FUNC 2 /* executing function # */ -#define E_INCL 3 /* including a file via . # */ -#define E_EXEC 4 /* executing command tree */ -#define E_LOOP 5 /* executing for/while # */ -#define E_ERRH 6 /* general error handler # */ -/* # indicates env has valid jbuf (see unwind()) */ - -/* struct env.flag values */ -#define EF_FUNC_PARSE BIT(0) /* function being parsed */ -#define EF_BRKCONT_PASS BIT(1) /* set if E_LOOP must pass break/continue on */ -#define EF_FAKE_SIGDIE BIT(2) /* hack to get info from unwind to quitenv */ - -/* Do breaks/continues stop at env type e? */ -#define STOP_BRKCONT(t) ((t) == E_NONE || (t) == E_PARSE \ - || (t) == E_FUNC || (t) == E_INCL) -/* Do returns stop at env type e? */ -#define STOP_RETURN(t) ((t) == E_FUNC || (t) == E_INCL) - -/* values for ksh_siglongjmp(e->jbuf, 0) */ -#define LRETURN 1 /* return statement */ -#define LEXIT 2 /* exit statement */ -#define LERROR 3 /* errorf() called */ -#define LLEAVE 4 /* untrappable exit/error */ -#define LINTR 5 /* ^C noticed */ -#define LBREAK 6 /* break statement */ -#define LCONTIN 7 /* continue statement */ -#define LSHELL 8 /* return to interactive shell() */ -#define LAEXPR 9 /* error in arithmetic expression */ - -/* option processing */ -#define OF_CMDLINE 0x01 /* command line */ -#define OF_SET 0x02 /* set builtin */ -#define OF_SPECIAL 0x04 /* a special variable changing */ -#define OF_INTERNAL 0x08 /* set internally by shell */ -#define OF_FIRSTTIME 0x10 /* as early as possible, once */ -#define OF_ANY (OF_CMDLINE | OF_SET | OF_SPECIAL | OF_INTERNAL) - -struct option { - const char *name; /* long name of option */ - char c; /* character flag (if any) */ - short flags; /* OF_* */ -}; -extern const struct option options[]; - -/* - * flags (the order of these enums MUST match the order in misc.c(options[])) - */ -enum sh_flag { - FEXPORT = 0, /* -a: export all */ - FBRACEEXPAND, /* enable {} globbing */ - FBGNICE, /* bgnice */ - FCOMMAND, /* -c: (invocation) execute specified command */ - FEMACS, /* emacs command editing */ - FEMACSUSEMETA, /* use 8th bit as meta */ - FERREXIT, /* -e: quit on error */ - FGMACS, /* gmacs command editing */ - FIGNOREEOF, /* eof does not exit */ - FTALKING, /* -i: interactive */ - FKEYWORD, /* -k: name=value anywhere */ - FLOGIN, /* -l: a login shell */ - FMARKDIRS, /* mark dirs with / in file name completion */ - FMONITOR, /* -m: job control monitoring */ - FNOCLOBBER, /* -C: don't overwrite existing files */ - FNOEXEC, /* -n: don't execute any commands */ - FNOGLOB, /* -f: don't do file globbing */ - FNOHUP, /* -H: don't kill running jobs when login shell exits */ - FNOLOG, /* don't save functions in history (ignored) */ -#ifdef JOBS - FNOTIFY, /* -b: asynchronous job completion notification */ -#endif - FNOUNSET, /* -u: using an unset var is an error */ - FPHYSICAL, /* -o physical: don't do logical cd's/pwd's */ - FPOSIX, /* -o posix: be posixly correct */ - FPRIVILEGED, /* -p: use suid_profile */ - FRESTRICTED, /* -r: restricted shell */ - FSH, /* -o sh: favor sh behaviour */ - FSTDIN, /* -s: (invocation) parse stdin */ - FTRACKALL, /* -h: create tracked aliases for all commands */ - FVERBOSE, /* -v: echo input */ - FVI, /* vi command editing */ - FVIRAW, /* always read in raw mode (ignored) */ - FVISHOW8, /* display chars with 8th bit set as is (versus M-) */ - FVITABCOMPLETE, /* enable tab as file name completion char */ - FVIESCCOMPLETE, /* enable ESC as file name completion in command mode */ - FXTRACE, /* -x: execution trace */ - FTALKING_I, /* (internal): initial shell was interactive */ - FNFLAGS /* (place holder: how many flags are there) */ -}; - -#define Flag(f) (shell_flags[(int) (f)]) - -EXTERN char shell_flags [FNFLAGS]; - -EXTERN char null [] I__(""); /* null value for variable */ -EXTERN char space [] I__(" "); -EXTERN char newline [] I__("\n"); -EXTERN char slash [] I__("/"); - -enum temp_type { - TT_HEREDOC_EXP, /* expanded heredoc */ - TT_HIST_EDIT /* temp file used for history editing (fc -e) */ -}; -typedef enum temp_type Temp_type; -/* temp/heredoc files. The file is removed when the struct is freed. */ -struct temp { - struct temp *next; - struct shf *shf; - int pid; /* pid of process parsed here-doc */ - Temp_type type; - char *name; -}; - -/* - * stdio and our IO routines - */ - -#define shl_spare (&shf_iob[0]) /* for c_read()/c_print() */ -#define shl_stdout (&shf_iob[1]) -#define shl_out (&shf_iob[2]) -EXTERN int shl_stdout_ok; - -/* - * trap handlers - */ -typedef struct trap { - int signal; /* signal number */ - const char *name; /* short name */ - const char *mess; /* descriptive name */ - char *trap; /* trap command */ - volatile sig_atomic_t set; /* trap pending */ - int flags; /* TF_* */ - sig_t cursig; /* current handler (valid if TF_ORIG_* set) */ - sig_t shtrap; /* shell signal handler */ -} Trap; - -/* values for Trap.flags */ -#define TF_SHELL_USES BIT(0) /* shell uses signal, user can't change */ -#define TF_USER_SET BIT(1) /* user has (tried to) set trap */ -#define TF_ORIG_IGN BIT(2) /* original action was SIG_IGN */ -#define TF_ORIG_DFL BIT(3) /* original action was SIG_DFL */ -#define TF_EXEC_IGN BIT(4) /* restore SIG_IGN just before exec */ -#define TF_EXEC_DFL BIT(5) /* restore SIG_DFL just before exec */ -#define TF_DFL_INTR BIT(6) /* when received, default action is LINTR */ -#define TF_TTY_INTR BIT(7) /* tty generated signal (see j_waitj) */ -#define TF_CHANGED BIT(8) /* used by runtrap() to detect trap changes */ -#define TF_FATAL BIT(9) /* causes termination if not trapped */ - -/* values for setsig()/setexecsig() flags argument */ -#define SS_RESTORE_MASK 0x3 /* how to restore a signal before an exec() */ -#define SS_RESTORE_CURR 0 /* leave current handler in place */ -#define SS_RESTORE_ORIG 1 /* restore original handler */ -#define SS_RESTORE_DFL 2 /* restore to SIG_DFL */ -#define SS_RESTORE_IGN 3 /* restore to SIG_IGN */ -#define SS_FORCE BIT(3) /* set signal even if original signal ignored */ -#define SS_USER BIT(4) /* user is doing the set (ie, trap command) */ -#define SS_SHTRAP BIT(5) /* trap for internal use (CHLD,ALRM,WINCH) */ - -#define SIGEXIT_ 0 /* for trap EXIT */ -#define SIGERR_ NSIG /* for trap ERR */ - -EXTERN volatile sig_atomic_t trap; /* traps pending? */ -EXTERN volatile sig_atomic_t intrsig; /* pending trap interrupts executing command */ -EXTERN volatile sig_atomic_t fatal_trap;/* received a fatal signal */ -#ifndef FROM_TRAP_C -/* Kludge to avoid bogus re-declaration of sigtraps[] error on AIX 3.2.5 */ -extern Trap sigtraps[NSIG + 1]; -#endif /* !FROM_TRAP_C */ - -/* - * TMOUT support - */ -/* values for ksh_tmout_state */ -enum tmout_enum { - TMOUT_EXECUTING = 0, /* executing commands */ - TMOUT_READING, /* waiting for input */ - TMOUT_LEAVING /* have timed out */ - }; -EXTERN unsigned int ksh_tmout; -EXTERN enum tmout_enum ksh_tmout_state I__(TMOUT_EXECUTING); - -/* For "You have stopped jobs" message */ -EXTERN int really_exit; - -/* - * fast character classes - */ -#define C_ALPHA BIT(0) /* a-z_A-Z */ -#define C_DIGIT BIT(1) /* 0-9 */ -#define C_LEX1 BIT(2) /* \0 \t\n|&;<>() */ -#define C_VAR1 BIT(3) /* *@#!$-? */ -#define C_IFSWS BIT(4) /* \t \n (IFS white space) */ -#define C_SUBOP1 BIT(5) /* "=-+?" */ -#define C_SUBOP2 BIT(6) /* "#%" */ -#define C_IFS BIT(7) /* $IFS */ -#define C_QUOTE BIT(8) /* \n\t"#$&'()*;<>?[\`| (needing quoting) */ - -extern short ctypes []; - -#define ctype(c, t) !!(ctypes[(unsigned char)(c)]&(t)) -#define letter(c) ctype(c, C_ALPHA) -#define digit(c) ctype(c, C_DIGIT) -#define letnum(c) ctype(c, C_ALPHA|C_DIGIT) - -EXTERN int ifs0 I__(' '); /* for "$*" */ - -/* Argument parsing for built-in commands and getopts command */ - -/* Values for Getopt.flags */ -#define GF_ERROR BIT(0) /* call errorf() if there is an error */ -#define GF_PLUSOPT BIT(1) /* allow +c as an option */ -#define GF_NONAME BIT(2) /* don't print argv[0] in errors */ - -/* Values for Getopt.info */ -#define GI_MINUS BIT(0) /* an option started with -... */ -#define GI_PLUS BIT(1) /* an option started with +... */ -#define GI_MINUSMINUS BIT(2) /* arguments were ended with -- */ - -typedef struct { - int optind; - int uoptind;/* what user sees in $OPTIND */ - char *optarg; - int flags; /* see GF_* */ - int info; /* see GI_* */ - unsigned int p; /* 0 or index into argv[optind - 1] */ - char buf[2]; /* for bad option OPTARG value */ -} Getopt; - -EXTERN Getopt builtin_opt; /* for shell builtin commands */ -EXTERN Getopt user_opt; /* parsing state for getopts builtin command */ - -/* This for co-processes */ - -typedef INT32 Coproc_id; /* something that won't (realisticly) wrap */ -struct coproc { - int read; /* pipe from co-process's stdout */ - int readw; /* other side of read (saved temporarily) */ - int write; /* pipe to co-process's stdin */ - Coproc_id id; /* id of current output pipe */ - int njobs; /* number of live jobs using output pipe */ - void *job; /* 0 or job of co-process using input pipe */ -}; -EXTERN struct coproc coproc; - -/* Used in jobs.c and by coprocess stuff in exec.c */ -#ifdef JOB_SIGS -EXTERN sigset_t sm_default, sm_sigchld; -#endif /* JOB_SIGS */ - -extern const char ksh_version[]; - -/* name of called builtin function (used by error functions) */ -EXTERN char *builtin_argv0; -EXTERN Tflag builtin_flag; /* flags of called builtin (SPEC_BI, etc.) */ - -/* current working directory, and size of memory allocated for same */ -EXTERN char *current_wd; -EXTERN int current_wd_size; - -/* Minimum required space to work with on a line - if the prompt leaves less - * space than this on a line, the prompt is truncated. - */ -# define MIN_EDIT_SPACE 7 -/* Minimum allowed value for x_cols: 2 for prompt, 3 for " < " at end of line - */ -# define MIN_COLS (2 + MIN_EDIT_SPACE + 3) -EXTERN int x_cols I__(80); /* tty columns */ - -/* These to avoid bracket matching problems */ -#define OPAREN '(' -#define CPAREN ')' -#define OBRACK '[' -#define CBRACK ']' -#define OBRACE '{' -#define CBRACE '}' - -/* Determine the location of the system (common) profile */ -#ifndef KSH_SYSTEM_PROFILE -# ifdef __NeXT -# define KSH_SYSTEM_PROFILE "/etc/profile.std" -# else /* __NeXT */ -# define KSH_SYSTEM_PROFILE "/etc/profile" -# endif /* __NeXT */ -#endif /* KSH_SYSTEM_PROFILE */ - -/* Used by v_evaluate() and setstr() to control action when error occurs */ -#define KSH_UNWIND_ERROR 0 /* unwind the stack (longjmp) */ -#define KSH_RETURN_ERROR 1 /* return 1/0 for success/failure */ - -#include "shf.h" -#include "table.h" -#include "tree.h" -#include "expand.h" -#include "lex.h" -#include "proto.h" - -/* be sure not to interfere with anyone else's idea about EXTERN */ -#ifdef EXTERN_DEFINED -# undef EXTERN_DEFINED -# undef EXTERN -#endif -#undef I__ - -#ifndef __RCSID -#ifdef __ELF__ -#define __RCSID(x) static const char __rcsid[] \ - GCC_FUNC_ATTR(section(".comment")) = (x) -#else -#define __RCSID(x) static const char __rcsid[] = (x) -#endif -#endif - -#endif /* ndef SH_H */ diff --git a/shf.c b/shf.c deleted file mode 100644 index 00f13f9..0000000 --- a/shf.c +++ /dev/null @@ -1,1226 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: shf.c,v 1.10 2004/12/18 22:35:41 millert Exp $ */ - -/* - * Shell file I/O routines - */ - -#include "sh.h" -#include "ksh_stat.h" - -__RCSID("$MirOS$"); - -/* flags to shf_emptybuf() */ -#define EB_READSW 0x01 /* about to switch to reading */ -#define EB_GROW 0x02 /* grow buffer if necessary (STRING+DYNAMIC) */ - -/* - * Replacement stdio routines. Stdio is too flakey on too many machines - * to be useful when you have multiple processes using the same underlying - * file descriptors. - */ - -static int shf_fillbuf(struct shf *shf); -static int shf_emptybuf(struct shf *shf, int flags); - -/* Open a file. First three args are for open(), last arg is flags for - * this package. Returns NULL if file could not be opened, or if a dup - * fails. - */ -struct shf * -shf_open(const char *name, int oflags, int mode, int sflags) -{ - struct shf *shf; - int bsize = sflags & SHF_UNBUF ? (sflags & SHF_RD ? 1 : 0) : SHF_BSIZE; - int fd; - - /* Done before open so if alloca fails, fd won't be lost. */ - shf = (struct shf *) alloc(sizeof(struct shf) + bsize, ATEMP); - shf->areap = ATEMP; - shf->buf = (unsigned char *) &shf[1]; - shf->bsize = bsize; - shf->flags = SHF_ALLOCS; - /* Rest filled in by reopen. */ - - fd = open(name, oflags, mode); - if (fd < 0) { - afree(shf, shf->areap); - return NULL; - } - if ((sflags & SHF_MAPHI) && fd < FDBASE) { - int nfd; - - nfd = ksh_dupbase(fd, FDBASE); - close(fd); - if (nfd < 0) { - afree(shf, shf->areap); - return NULL; - } - fd = nfd; - } - sflags &= ~SHF_ACCMODE; - sflags |= (oflags & O_ACCMODE) == O_RDONLY ? SHF_RD - : ((oflags & O_ACCMODE) == O_WRONLY ? SHF_WR - : SHF_RDWR); - - return shf_reopen(fd, sflags, shf); -} - -/* Set up the shf structure for a file descriptor. Doesn't fail. */ -struct shf * -shf_fdopen(int fd, int sflags, struct shf *shf) -{ - int bsize = sflags & SHF_UNBUF ? (sflags & SHF_RD ? 1 : 0) : SHF_BSIZE; - - /* use fcntl() to figure out correct read/write flags */ - if (sflags & SHF_GETFL) { - int flags = fcntl(fd, F_GETFL, 0); - - if (flags < 0) - /* will get an error on first read/write */ - sflags |= SHF_RDWR; - else - switch (flags & O_ACCMODE) { - case O_RDONLY: sflags |= SHF_RD; break; - case O_WRONLY: sflags |= SHF_WR; break; - case O_RDWR: sflags |= SHF_RDWR; break; - } - } - - if (!(sflags & (SHF_RD | SHF_WR))) - internal_errorf(1, "shf_fdopen: missing read/write"); - - if (shf) { - if (bsize) { - shf->buf = (unsigned char *) alloc(bsize, ATEMP); - sflags |= SHF_ALLOCB; - } else - shf->buf = NULL; - } else { - shf = (struct shf *) alloc(sizeof(struct shf) + bsize, ATEMP); - shf->buf = (unsigned char *) &shf[1]; - sflags |= SHF_ALLOCS; - } - shf->areap = ATEMP; - shf->fd = fd; - shf->rp = shf->wp = shf->buf; - shf->rnleft = 0; - shf->rbsize = bsize; - shf->wnleft = 0; /* force call to shf_emptybuf() */ - shf->wbsize = sflags & SHF_UNBUF ? 0 : bsize; - shf->flags = sflags; - shf->errno_ = 0; - shf->bsize = bsize; - if (sflags & SHF_CLEXEC) - fcntl(fd, F_SETFD, FD_CLOEXEC); - return shf; -} - -/* Set up an existing shf (and buffer) to use the given fd */ -struct shf * -shf_reopen(int fd, int sflags, struct shf *shf) -{ - int bsize = sflags & SHF_UNBUF ? (sflags & SHF_RD ? 1 : 0) : SHF_BSIZE; - - /* use fcntl() to figure out correct read/write flags */ - if (sflags & SHF_GETFL) { - int flags = fcntl(fd, F_GETFL, 0); - - if (flags < 0) - /* will get an error on first read/write */ - sflags |= SHF_RDWR; - else - switch (flags & O_ACCMODE) { - case O_RDONLY: sflags |= SHF_RD; break; - case O_WRONLY: sflags |= SHF_WR; break; - case O_RDWR: sflags |= SHF_RDWR; break; - } - } - - if (!(sflags & (SHF_RD | SHF_WR))) - internal_errorf(1, "shf_reopen: missing read/write"); - if (!shf || !shf->buf || shf->bsize < bsize) - internal_errorf(1, "shf_reopen: bad shf/buf/bsize"); - - /* assumes shf->buf and shf->bsize already set up */ - shf->fd = fd; - shf->rp = shf->wp = shf->buf; - shf->rnleft = 0; - shf->rbsize = bsize; - shf->wnleft = 0; /* force call to shf_emptybuf() */ - shf->wbsize = sflags & SHF_UNBUF ? 0 : bsize; - shf->flags = (shf->flags & (SHF_ALLOCS | SHF_ALLOCB)) | sflags; - shf->errno_ = 0; - if (sflags & SHF_CLEXEC) - fcntl(fd, F_SETFD, FD_CLOEXEC); - return shf; -} - -/* Open a string for reading or writing. If reading, bsize is the number - * of bytes that can be read. If writing, bsize is the maximum number of - * bytes that can be written. If shf is not null, it is filled in and - * returned, if it is null, shf is allocated. If writing and buf is null - * and SHF_DYNAMIC is set, the buffer is allocated (if bsize > 0, it is - * used for the initial size). Doesn't fail. - * When writing, a byte is reserved for a trailing null - see shf_sclose(). - */ -struct shf * -shf_sopen(char *buf, int bsize, int sflags, struct shf *shf) -{ - /* can't have a read+write string */ - if (!(sflags & (SHF_RD | SHF_WR)) - || (sflags & (SHF_RD | SHF_WR)) == (SHF_RD | SHF_WR)) - internal_errorf(1, "shf_sopen: flags 0x%x", sflags); - - if (!shf) { - shf = (struct shf *) alloc(sizeof(struct shf), ATEMP); - sflags |= SHF_ALLOCS; - } - shf->areap = ATEMP; - if (!buf && (sflags & SHF_WR) && (sflags & SHF_DYNAMIC)) { - if (bsize <= 0) - bsize = 64; - sflags |= SHF_ALLOCB; - buf = alloc(bsize, shf->areap); - } - shf->fd = -1; - shf->buf = shf->rp = shf->wp = (unsigned char *) buf; - shf->rnleft = bsize; - shf->rbsize = bsize; - shf->wnleft = bsize - 1; /* space for a '\0' */ - shf->wbsize = bsize; - shf->flags = sflags | SHF_STRING; - shf->errno_ = 0; - shf->bsize = bsize; - - return shf; -} - -/* Flush and close file descriptor, free the shf structure */ -int -shf_close(struct shf *shf) -{ - int ret = 0; - - if (shf->fd >= 0) { - ret = shf_flush(shf); - if (close(shf->fd) < 0) - ret = EOF; - } - if (shf->flags & SHF_ALLOCS) - afree(shf, shf->areap); - else if (shf->flags & SHF_ALLOCB) - afree(shf->buf, shf->areap); - - return ret; -} - -/* Flush and close file descriptor, don't free file structure */ -int -shf_fdclose(struct shf *shf) -{ - int ret = 0; - - if (shf->fd >= 0) { - ret = shf_flush(shf); - if (close(shf->fd) < 0) - ret = EOF; - shf->rnleft = 0; - shf->rp = shf->buf; - shf->wnleft = 0; - shf->fd = -1; - } - - return ret; -} - -/* Close a string - if it was opened for writing, it is null terminated; - * returns a pointer to the string and frees shf if it was allocated - * (does not free string if it was allocated). - */ -char * -shf_sclose(struct shf *shf) -{ - unsigned char *s = shf->buf; - - /* null terminate */ - if (shf->flags & SHF_WR) { - shf->wnleft++; - shf_putc('\0', shf); - } - if (shf->flags & SHF_ALLOCS) - afree(shf, shf->areap); - return (char *) s; -} - -/* Flush and free file structure, don't close file descriptor */ -int -shf_finish(struct shf *shf) -{ - int ret = 0; - - if (shf->fd >= 0) - ret = shf_flush(shf); - if (shf->flags & SHF_ALLOCS) - afree(shf, shf->areap); - else if (shf->flags & SHF_ALLOCB) - afree(shf->buf, shf->areap); - - return ret; -} - -/* Un-read what has been read but not examined, or write what has been - * buffered. Returns 0 for success, EOF for (write) error. - */ -int -shf_flush(struct shf *shf) -{ - if (shf->flags & SHF_STRING) - return (shf->flags & SHF_WR) ? EOF : 0; - - if (shf->fd < 0) - internal_errorf(1, "shf_flush: no fd"); - - if (shf->flags & SHF_ERROR) { - errno = shf->errno_; - return EOF; - } - - if (shf->flags & SHF_READING) { - shf->flags &= ~(SHF_EOF | SHF_READING); - if (shf->rnleft > 0) { - lseek(shf->fd, (off_t) -shf->rnleft, 1); - shf->rnleft = 0; - shf->rp = shf->buf; - } - return 0; - } else if (shf->flags & SHF_WRITING) - return shf_emptybuf(shf, 0); - - return 0; -} - -/* Write out any buffered data. If currently reading, flushes the read - * buffer. Returns 0 for success, EOF for (write) error. - */ -static int -shf_emptybuf(struct shf *shf, int flags) -{ - int ret = 0; - - if (!(shf->flags & SHF_STRING) && shf->fd < 0) - internal_errorf(1, "shf_emptybuf: no fd"); - - if (shf->flags & SHF_ERROR) { - errno = shf->errno_; - return EOF; - } - - if (shf->flags & SHF_READING) { - if (flags & EB_READSW) /* doesn't happen */ - return 0; - ret = shf_flush(shf); - shf->flags &= ~SHF_READING; - } - if (shf->flags & SHF_STRING) { - unsigned char *nbuf; - - /* Note that we assume SHF_ALLOCS is not set if SHF_ALLOCB - * is set... (changing the shf pointer could cause problems) - */ - if (!(flags & EB_GROW) || !(shf->flags & SHF_DYNAMIC) - || !(shf->flags & SHF_ALLOCB)) - return EOF; - /* allocate more space for buffer */ - nbuf = (unsigned char *) aresize(shf->buf, shf->wbsize * 2, - shf->areap); - shf->rp = nbuf + (shf->rp - shf->buf); - shf->wp = nbuf + (shf->wp - shf->buf); - shf->rbsize += shf->wbsize; - shf->wnleft += shf->wbsize; - shf->wbsize *= 2; - shf->buf = nbuf; - } else { - if (shf->flags & SHF_WRITING) { - int ntowrite = shf->wp - shf->buf; - unsigned char *buf = shf->buf; - int n; - - while (ntowrite > 0) { - n = write(shf->fd, buf, ntowrite); - if (n < 0) { - if (errno == EINTR - && !(shf->flags & SHF_INTERRUPT)) - continue; - shf->flags |= SHF_ERROR; - shf->errno_ = errno; - shf->wnleft = 0; - if (buf != shf->buf) { - /* allow a second flush - * to work */ - memmove(shf->buf, buf, - ntowrite); - shf->wp = shf->buf + ntowrite; - } - return EOF; - } - buf += n; - ntowrite -= n; - } - if (flags & EB_READSW) { - shf->wp = shf->buf; - shf->wnleft = 0; - shf->flags &= ~SHF_WRITING; - return 0; - } - } - shf->wp = shf->buf; - shf->wnleft = shf->wbsize; - } - shf->flags |= SHF_WRITING; - - return ret; -} - -/* Fill up a read buffer. Returns EOF for a read error, 0 otherwise. */ -static int -shf_fillbuf(struct shf *shf) -{ - if (shf->flags & SHF_STRING) - return 0; - - if (shf->fd < 0) - internal_errorf(1, "shf_fillbuf: no fd"); - - if (shf->flags & (SHF_EOF | SHF_ERROR)) { - if (shf->flags & SHF_ERROR) - errno = shf->errno_; - return EOF; - } - - if ((shf->flags & SHF_WRITING) && shf_emptybuf(shf, EB_READSW) == EOF) - return EOF; - - shf->flags |= SHF_READING; - - shf->rp = shf->buf; - while (1) { - shf->rnleft = blocking_read(shf->fd, (char *) shf->buf, - shf->rbsize); - if (shf->rnleft < 0 && errno == EINTR - && !(shf->flags & SHF_INTERRUPT)) - continue; - break; - } - if (shf->rnleft <= 0) { - if (shf->rnleft < 0) { - shf->flags |= SHF_ERROR; - shf->errno_ = errno; - shf->rnleft = 0; - shf->rp = shf->buf; - return EOF; - } - shf->flags |= SHF_EOF; - } - return 0; -} - -/* Seek to a new position in the file. If writing, flushes the buffer - * first. If reading, optimizes small relative seeks that stay inside the - * buffer. Returns 0 for success, EOF otherwise. - */ -int -shf_seek(struct shf *shf, off_t where, int from) -{ - if (shf->fd < 0) { - errno = EINVAL; - return EOF; - } - - if (shf->flags & SHF_ERROR) { - errno = shf->errno_; - return EOF; - } - - if ((shf->flags & SHF_WRITING) && shf_emptybuf(shf, EB_READSW) == EOF) - return EOF; - - if (shf->flags & SHF_READING) { - if (from == SEEK_CUR && - (where < 0 ? - -where >= shf->rbsize - shf->rnleft : - where < shf->rnleft)) { - shf->rnleft -= where; - shf->rp += where; - return 0; - } - shf->rnleft = 0; - shf->rp = shf->buf; - } - - shf->flags &= ~(SHF_EOF | SHF_READING | SHF_WRITING); - - if (lseek(shf->fd, where, from) < 0) { - shf->errno_ = errno; - shf->flags |= SHF_ERROR; - return EOF; - } - - return 0; -} - - -/* Read a buffer from shf. Returns the number of bytes read into buf, - * if no bytes were read, returns 0 if end of file was seen, EOF if - * a read error occurred. - */ -int -shf_read(char *buf, int bsize, struct shf *shf) -{ - int orig_bsize = bsize; - int ncopy; - - if (!(shf->flags & SHF_RD)) - internal_errorf(1, "shf_read: flags %x", shf->flags); - - if (bsize <= 0) - internal_errorf(1, "shf_read: bsize %d", bsize); - - while (bsize > 0) { - if (shf->rnleft == 0 - && (shf_fillbuf(shf) == EOF || shf->rnleft == 0)) - break; - ncopy = shf->rnleft; - if (ncopy > bsize) - ncopy = bsize; - memcpy(buf, shf->rp, ncopy); - buf += ncopy; - bsize -= ncopy; - shf->rp += ncopy; - shf->rnleft -= ncopy; - } - /* Note: fread(3S) returns 0 for errors - this doesn't */ - return orig_bsize == bsize ? (shf_error(shf) ? EOF : 0) - : orig_bsize - bsize; -} - -/* Read up to a newline or EOF. The newline is put in buf; buf is always - * null terminated. Returns NULL on read error or if nothing was read before - * end of file, returns a pointer to the null byte in buf otherwise. - */ -char * -shf_getse(char *buf, int bsize, struct shf *shf) -{ - unsigned char *end; - int ncopy; - char *orig_buf = buf; - - if (!(shf->flags & SHF_RD)) - internal_errorf(1, "shf_getse: flags %x", shf->flags); - - if (bsize <= 0) - return NULL; - - --bsize; /* save room for null */ - do { - if (shf->rnleft == 0) { - if (shf_fillbuf(shf) == EOF) - return NULL; - if (shf->rnleft == 0) { - *buf = '\0'; - return buf == orig_buf ? NULL : buf; - } - } - end = (unsigned char *) memchr((char *) shf->rp, '\n', - shf->rnleft); - ncopy = end ? end - shf->rp + 1 : shf->rnleft; - if (ncopy > bsize) - ncopy = bsize; - memcpy(buf, (char *) shf->rp, ncopy); - shf->rp += ncopy; - shf->rnleft -= ncopy; - buf += ncopy; - bsize -= ncopy; - } while (!end && bsize); - *buf = '\0'; - return buf; -} - -/* Returns the char read. Returns EOF for error and end of file. */ -int -shf_getchar(struct shf *shf) -{ - if (!(shf->flags & SHF_RD)) - internal_errorf(1, "shf_getchar: flags %x", shf->flags); - - if (shf->rnleft == 0 && (shf_fillbuf(shf) == EOF || shf->rnleft == 0)) - return EOF; - --shf->rnleft; - return *shf->rp++; -} - -/* Put a character back in the input stream. Returns the character if - * successful, EOF if there is no room. - */ -int -shf_ungetc(int c, struct shf *shf) -{ - if (!(shf->flags & SHF_RD)) - internal_errorf(1, "shf_ungetc: flags %x", shf->flags); - - if ((shf->flags & SHF_ERROR) || c == EOF - || (shf->rp == shf->buf && shf->rnleft)) - return EOF; - - if ((shf->flags & SHF_WRITING) && shf_emptybuf(shf, EB_READSW) == EOF) - return EOF; - - if (shf->rp == shf->buf) - shf->rp = shf->buf + shf->rbsize; - if (shf->flags & SHF_STRING) { - /* Can unget what was read, but not something different - we - * don't want to modify a string. - */ - if (shf->rp[-1] != c) - return EOF; - shf->flags &= ~SHF_EOF; - shf->rp--; - shf->rnleft++; - return c; - } - shf->flags &= ~SHF_EOF; - *--(shf->rp) = c; - shf->rnleft++; - return c; -} - -/* Write a character. Returns the character if successful, EOF if - * the char could not be written. - */ -int -shf_putchar(int c, struct shf *shf) -{ - if (!(shf->flags & SHF_WR)) - internal_errorf(1, "shf_putchar: flags %x", shf->flags); - - if (c == EOF) - return EOF; - - if (shf->flags & SHF_UNBUF) { - char cc = c; - int n; - - if (shf->fd < 0) - internal_errorf(1, "shf_putchar: no fd"); - if (shf->flags & SHF_ERROR) { - errno = shf->errno_; - return EOF; - } - while ((n = write(shf->fd, &cc, 1)) != 1) - if (n < 0) { - if (errno == EINTR - && !(shf->flags & SHF_INTERRUPT)) - continue; - shf->flags |= SHF_ERROR; - shf->errno_ = errno; - return EOF; - } - } else { - /* Flush deals with strings and sticky errors */ - if (shf->wnleft == 0 && shf_emptybuf(shf, EB_GROW) == EOF) - return EOF; - shf->wnleft--; - *shf->wp++ = c; - } - - return c; -} - -/* Write a string. Returns the length of the string if successful, EOF if - * the string could not be written. - */ -int -shf_puts(const char *s, struct shf *shf) -{ - if (!s) - return EOF; - - return shf_write(s, strlen(s), shf); -} - -/* Write a buffer. Returns nbytes if successful, EOF if there is an error. */ -int -shf_write(const char *buf, int nbytes, struct shf *shf) -{ - int orig_nbytes = nbytes; - int n; - int ncopy; - - if (!(shf->flags & SHF_WR)) - internal_errorf(1, "shf_write: flags %x", shf->flags); - - if (nbytes < 0) - internal_errorf(1, "shf_write: nbytes %d", nbytes); - - /* Don't buffer if buffer is empty and we're writting a large amount. */ - if ((ncopy = shf->wnleft) - && (shf->wp != shf->buf || nbytes < shf->wnleft)) - { - if (ncopy > nbytes) - ncopy = nbytes; - memcpy(shf->wp, buf, ncopy); - nbytes -= ncopy; - buf += ncopy; - shf->wp += ncopy; - shf->wnleft -= ncopy; - } - if (nbytes > 0) { - /* Flush deals with strings and sticky errors */ - if (shf_emptybuf(shf, EB_GROW) == EOF) - return EOF; - if (nbytes > shf->wbsize) { - ncopy = nbytes; - if (shf->wbsize) - ncopy -= nbytes % shf->wbsize; - nbytes -= ncopy; - while (ncopy > 0) { - n = write(shf->fd, buf, ncopy); - if (n < 0) { - if (errno == EINTR - && !(shf->flags & SHF_INTERRUPT)) - continue; - shf->flags |= SHF_ERROR; - shf->errno_ = errno; - shf->wnleft = 0; - /* Note: fwrite(3S) returns 0 for - * errors - this doesn't */ - return EOF; - } - buf += n; - ncopy -= n; - } - } - if (nbytes > 0) { - memcpy(shf->wp, buf, nbytes); - shf->wp += nbytes; - shf->wnleft -= nbytes; - } - } - - return orig_nbytes; -} - -int -shf_fprintf(struct shf *shf, const char *fmt, ...) -{ - va_list args; - int n; - - SH_VA_START(args, fmt); - n = shf_vfprintf(shf, fmt, args); - va_end(args); - - return n; -} - -int -shf_snprintf(char *buf, int bsize, const char *fmt, ...) -{ - struct shf shf; - va_list args; - int n; - - if (!buf || bsize <= 0) - internal_errorf(1, "shf_snprintf: buf %lx, bsize %d", - (long) buf, bsize); - - shf_sopen(buf, bsize, SHF_WR, &shf); - SH_VA_START(args, fmt); - n = shf_vfprintf(&shf, fmt, args); - va_end(args); - shf_sclose(&shf); /* null terminates */ - return n; -} - -char * -shf_smprintf(const char *fmt, ...) -{ - struct shf shf; - va_list args; - - shf_sopen(NULL, 0, SHF_WR|SHF_DYNAMIC, &shf); - SH_VA_START(args, fmt); - shf_vfprintf(&shf, fmt, args); - va_end(args); - return shf_sclose(&shf); /* null terminates */ -} - -#undef FP /* if you want floating point stuff */ - -#define BUF_SIZE 128 -#ifndef DMAXEXP -# define DMAXEXP 128 /* should be big enough */ -#endif -#define FPBUF_SIZE (DMAXEXP+16)/* this must be > - * MAX(DMAXEXP, log10(pow(2, DSIGNIF))) - * + ceil(log10(DMAXEXP)) + 8 (I think). - * Since this is hard to express as a - * constant, just use a large buffer. - */ - -/* - * What kinda of machine we on? Hopefully the C compiler will optimize - * this out... - * - * For shorts, we want sign extend for %d but not for %[oxu] - on 16 bit - * machines it don't matter. Assumes C compiler has converted shorts to - * ints before pushing them. - */ -#define POP_INT(f, s, a) (((f) & FL_LONG) ? \ - va_arg((a), unsigned long) \ - : \ - (sizeof(int) < sizeof(long) ? \ - ((s) ? \ - (long) va_arg((a), int) \ - : \ - va_arg((a), unsigned)) \ - : \ - va_arg((a), unsigned))) - -#define ABIGNUM 32000 /* big numer that will fit in a short */ -#define LOG2_10 3.321928094887362347870319429 /* log base 2 of 10 */ - -#define FL_HASH 0x001 /* '#' seen */ -#define FL_PLUS 0x002 /* '+' seen */ -#define FL_RIGHT 0x004 /* '-' seen */ -#define FL_BLANK 0x008 /* ' ' seen */ -#define FL_SHORT 0x010 /* 'h' seen */ -#define FL_LONG 0x020 /* 'l' seen */ -#define FL_ZERO 0x040 /* '0' seen */ -#define FL_DOT 0x080 /* '.' seen */ -#define FL_UPPER 0x100 /* format character was uppercase */ -#define FL_NUMBER 0x200 /* a number was formated %[douxefg] */ - - -#ifdef FP -#include - -static double -my_ceil(d) - double d; -{ - double i; - - return d - modf(d, &i) + (d < 0 ? -1 : 1); -} -#endif /* FP */ - -int -shf_vfprintf(struct shf *shf, const char *fmt, va_list args) -{ - char c, *s; - int UNINITIALIZED(tmp); - int field, precision; - int len; - int flags; - unsigned long lnum; - /* %#o produces the longest output */ - char numbuf[(8*sizeof(long) + 2) / 3 + 1]; - /* this stuff for dealing with the buffer */ - int nwritten = 0; -#ifdef FP - /* should be in - * extern double frexp(); - */ - extern char *ecvt(); - - double fpnum; - int expo, decpt; - char style; - char fpbuf[FPBUF_SIZE]; -#endif /* FP */ - - if (!fmt) - return 0; - - while ((c = *fmt++)) { - if (c != '%') { - shf_putc(c, shf); - nwritten++; - continue; - } - /* - * This will accept flags/fields in any order - not - * just the order specified in printf(3), but this is - * the way _doprnt() seems to work (on bsd and sysV). - * The only restriction is that the format character must - * come last :-). - */ - flags = field = precision = 0; - for ( ; (c = *fmt++) ; ) { - switch (c) { - case '#': - flags |= FL_HASH; - continue; - - case '+': - flags |= FL_PLUS; - continue; - - case '-': - flags |= FL_RIGHT; - continue; - - case ' ': - flags |= FL_BLANK; - continue; - - case '0': - if (!(flags & FL_DOT)) - flags |= FL_ZERO; - continue; - - case '.': - flags |= FL_DOT; - precision = 0; - continue; - - case '*': - tmp = va_arg(args, int); - if (flags & FL_DOT) - precision = tmp; - else if ((field = tmp) < 0) { - field = -field; - flags |= FL_RIGHT; - } - continue; - - case 'l': - flags |= FL_LONG; - continue; - - case 'h': - flags |= FL_SHORT; - continue; - } - if (digit(c)) { - tmp = c - '0'; - while (c = *fmt++, digit(c)) - tmp = tmp * 10 + c - '0'; - --fmt; - if (tmp < 0) /* overflow? */ - tmp = 0; - if (flags & FL_DOT) - precision = tmp; - else - field = tmp; - continue; - } - break; - } - - if (precision < 0) - precision = 0; - - if (!c) /* nasty format */ - break; - - if (c >= 'A' && c <= 'Z') { - flags |= FL_UPPER; - c = c - 'A' + 'a'; - } - - switch (c) { - case 'p': /* pointer */ - flags &= ~(FL_LONG | FL_SHORT); - if (sizeof(char *) > sizeof(int)) - flags |= FL_LONG; /* hope it fits.. */ - /* aaahhh... */ - case 'd': - case 'i': - case 'o': - case 'u': - case 'x': - flags |= FL_NUMBER; - s = &numbuf[sizeof(numbuf)]; - lnum = POP_INT(flags, c == 'd', args); - switch (c) { - case 'd': - case 'i': - if (0 > (long) lnum) - lnum = - (long) lnum, tmp = 1; - else - tmp = 0; - /* aaahhhh..... */ - - case 'u': - do { - *--s = lnum % 10 + '0'; - lnum /= 10; - } while (lnum); - - if (c != 'u') { - if (tmp) - *--s = '-'; - else if (flags & FL_PLUS) - *--s = '+'; - else if (flags & FL_BLANK) - *--s = ' '; - } - break; - - case 'o': - do { - *--s = (lnum & 0x7) + '0'; - lnum >>= 3; - } while (lnum); - - if ((flags & FL_HASH) && *s != '0') - *--s = '0'; - break; - - case 'p': - case 'x': - { - const char *digits = (flags & FL_UPPER) ? - "0123456789ABCDEF" - : "0123456789abcdef"; - do { - *--s = digits[lnum & 0xf]; - lnum >>= 4; - } while (lnum); - - if (flags & FL_HASH) { - *--s = (flags & FL_UPPER) ? 'X' : 'x'; - *--s = '0'; - } - } - } - len = &numbuf[sizeof(numbuf)] - s; - if (flags & FL_DOT) { - if (precision > len) { - field = precision; - flags |= FL_ZERO; - } else - precision = len; /* no loss */ - } - break; - -#ifdef FP - case 'e': - case 'g': - case 'f': - { - char *p; - - /* - * This could probably be done better, - * but it seems to work. Note that gcvt() - * is not used, as you cannot tell it to - * not strip the zeros. - */ - flags |= FL_NUMBER; - if (!(flags & FL_DOT)) - precision = 6; /* default */ - /* - * Assumes doubles are pushed on - * the stack. If this is not so, then - * FL_LONG/FL_SHORT should be checked. - */ - fpnum = va_arg(args, double); - s = fpbuf; - style = c; - /* - * This is the same as - * expo = ceil(log10(fpnum)) - * but doesn't need -lm. This is an - * approximation as expo is rounded up. - */ - (void) frexp(fpnum, &expo); - expo = my_ceil(expo / LOG2_10); - - if (expo < 0) - expo = 0; - - p = ecvt(fpnum, precision + 1 + expo, - &decpt, &tmp); - if (c == 'g') { - if (decpt < -4 || decpt > precision) - style = 'e'; - else - style = 'f'; - if (decpt > 0 && (precision -= decpt) < 0) - precision = 0; - } - if (tmp) - *s++ = '-'; - else if (flags & FL_PLUS) - *s++ = '+'; - else if (flags & FL_BLANK) - *s++ = ' '; - - if (style == 'e') - *s++ = *p++; - else { - if (decpt > 0) { - /* Overflow check - should - * never have this problem. - */ - if (decpt > - &fpbuf[sizeof(fpbuf)] - - s - 8) - decpt = - &fpbuf[sizeof(fpbuf)] - - s - 8; - (void) memcpy(s, p, decpt); - s += decpt; - p += decpt; - } else - *s++ = '0'; - } - - /* print the fraction? */ - if (precision > 0) { - *s++ = '.'; - /* Overflow check - should - * never have this problem. - */ - if (precision > &fpbuf[sizeof(fpbuf)] - - s - 7) - precision = - &fpbuf[sizeof(fpbuf)] - - s - 7; - for (tmp = decpt; tmp++ < 0 && - precision > 0 ; precision--) - *s++ = '0'; - tmp = strlen(p); - if (precision > tmp) - precision = tmp; - /* Overflow check - should - * never have this problem. - */ - if (precision > &fpbuf[sizeof(fpbuf)] - - s - 7) - precision = - &fpbuf[sizeof(fpbuf)] - - s - 7; - (void) memcpy(s, p, precision); - s += precision; - /* - * 'g' format strips trailing - * zeros after the decimal. - */ - if (c == 'g' && !(flags & FL_HASH)) { - while (*--s == '0') - ; - if (*s != '.') - s++; - } - } else if (flags & FL_HASH) - *s++ = '.'; - - if (style == 'e') { - *s++ = (flags & FL_UPPER) ? 'E' : 'e'; - if (--decpt >= 0) - *s++ = '+'; - else { - *s++ = '-'; - decpt = -decpt; - } - p = &numbuf[sizeof(numbuf)]; - for (tmp = 0; tmp < 2 || decpt ; tmp++) { - *--p = '0' + decpt % 10; - decpt /= 10; - } - tmp = &numbuf[sizeof(numbuf)] - p; - (void) memcpy(s, p, tmp); - s += tmp; - } - - len = s - fpbuf; - s = fpbuf; - precision = len; - break; - } -#endif /* FP */ - - case 's': - if (!(s = va_arg(args, char *))) - s = "(null %s)"; - len = strlen(s); - break; - - case 'c': - flags &= ~FL_DOT; - numbuf[0] = va_arg(args, int); - s = numbuf; - len = 1; - break; - - case '%': - default: - numbuf[0] = c; - s = numbuf; - len = 1; - break; - } - - /* - * At this point s should point to a string that is - * to be formatted, and len should be the length of the - * string. - */ - if (!(flags & FL_DOT) || len < precision) - precision = len; - if (field > precision) { - field -= precision; - if (!(flags & FL_RIGHT)) { - field = -field; - /* skip past sign or 0x when padding with 0 */ - if ((flags & FL_ZERO) && (flags & FL_NUMBER)) { - if (*s == '+' || *s == '-' || *s ==' ') - { - shf_putc(*s, shf); - s++; - precision--; - nwritten++; - } else if (*s == '0') { - shf_putc(*s, shf); - s++; - nwritten++; - if (--precision > 0 && - (*s | 0x20) == 'x') - { - shf_putc(*s, shf); - s++; - precision--; - nwritten++; - } - } - c = '0'; - } else - c = flags & FL_ZERO ? '0' : ' '; - if (field < 0) { - nwritten += -field; - for ( ; field < 0 ; field++) - shf_putc(c, shf); - } - } else - c = ' '; - } else - field = 0; - - if (precision > 0) { - nwritten += precision; - for ( ; precision-- > 0 ; s++) - shf_putc(*s, shf); - } - if (field > 0) { - nwritten += field; - for ( ; field > 0 ; --field) - shf_putc(c, shf); - } - } - - return shf_error(shf) ? EOF : nwritten; -} diff --git a/shf.h b/shf.h deleted file mode 100644 index 4c2b541..0000000 --- a/shf.h +++ /dev/null @@ -1,87 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: shf.h,v 1.2 1999/01/08 20:25:02 millert Exp $ */ - -#ifndef SHF_H -#define SHF_H - -/* - * Shell file I/O routines - */ - -#define SHF_BSIZE 512 - -#define shf_fileno(shf) ((shf)->fd) -#define shf_setfileno(shf,nfd) ((shf)->fd = (nfd)) -#define shf_getc(shf) ((shf)->rnleft > 0 ? (shf)->rnleft--, *(shf)->rp++ : \ - shf_getchar(shf)) -#define shf_putc(c, shf) ((shf)->wnleft == 0 ? shf_putchar((c), (shf)) \ - : ((shf)->wnleft--, *(shf)->wp++ = (c))) -#define shf_eof(shf) ((shf)->flags & SHF_EOF) -#define shf_error(shf) ((shf)->flags & SHF_ERROR) -#define shf_errno(shf) ((shf)->errno_) -#define shf_clearerr(shf) ((shf)->flags &= ~(SHF_EOF | SHF_ERROR)) - -/* Flags passed to shf_*open() */ -#define SHF_RD 0x0001 -#define SHF_WR 0x0002 -#define SHF_RDWR (SHF_RD|SHF_WR) -#define SHF_ACCMODE 0x0003 /* mask */ -#define SHF_GETFL 0x0004 /* use fcntl() to figure RD/WR flags */ -#define SHF_UNBUF 0x0008 /* unbuffered I/O */ -#define SHF_CLEXEC 0x0010 /* set close on exec flag */ -#define SHF_MAPHI 0x0020 /* make fd > FDBASE (and close orig) - * (shf_open() only) */ -#define SHF_DYNAMIC 0x0040 /* string: increase buffer as needed */ -#define SHF_INTERRUPT 0x0080 /* EINTR in read/write causes error */ -/* Flags used internally */ -#define SHF_STRING 0x0100 /* a string, not a file */ -#define SHF_ALLOCS 0x0200 /* shf and shf->buf were alloc()ed */ -#define SHF_ALLOCB 0x0400 /* shf->buf was alloc()ed */ -#define SHF_ERROR 0x0800 /* read()/write() error */ -#define SHF_EOF 0x1000 /* read eof (sticky) */ -#define SHF_READING 0x2000 /* currently reading: rnleft,rp valid */ -#define SHF_WRITING 0x4000 /* currently writing: wnleft,wp valid */ - - -struct shf { - int flags; /* see SHF_* */ - unsigned char *rp; /* read: current position in buffer */ - int rbsize; /* size of buffer (1 if SHF_UNBUF) */ - int rnleft; /* read: how much data left in buffer */ - unsigned char *wp; /* write: current position in buffer */ - int wbsize; /* size of buffer (0 if SHF_UNBUF) */ - int wnleft; /* write: how much space left in buffer */ - unsigned char *buf; /* buffer */ - int fd; /* file descriptor */ - int errno_; /* saved value of errno after error */ - int bsize; /* actual size of buf */ - Area *areap; /* area shf/buf were allocated in */ -}; - -extern struct shf shf_iob[]; - -struct shf *shf_open(const char *name, int oflags, int mode, - int sflags); -struct shf *shf_fdopen(int fd, int sflags, struct shf *shf); -struct shf *shf_reopen(int fd, int sflags, struct shf *shf); -struct shf *shf_sopen(char *buf, int bsize, int sflags, - struct shf *shf); -int shf_close(struct shf *shf); -int shf_fdclose(struct shf *shf); -char *shf_sclose(struct shf *shf); -int shf_finish(struct shf *shf); -int shf_flush(struct shf *shf); -int shf_seek(struct shf *shf, off_t where, int from); -int shf_read(char *buf, int bsize, struct shf *shf); -char *shf_getse(char *buf, int bsize, struct shf *shf); -int shf_getchar(struct shf *shf); -int shf_ungetc(int c, struct shf *shf); -int shf_putchar(int c, struct shf *shf); -int shf_puts(const char *s, struct shf *shf); -int shf_write(const char *buf, int nbytes, struct shf *shf); -int shf_fprintf(struct shf *shf, const char *fmt, ...); -int shf_snprintf(char *buf, int bsize, const char *fmt, ...); -char *shf_smprintf(const char *fmt, ...); -int shf_vfprintf(struct shf *, const char *fmt, va_list args); - -#endif /* SHF_H */ diff --git a/syn.c b/syn.c deleted file mode 100644 index 2a69908..0000000 --- a/syn.c +++ /dev/null @@ -1,910 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: syn.c,v 1.14 2003/10/22 07:40:38 jmc Exp $ */ - -/* - * shell parser (C version) - */ - -#include "sh.h" -#include "c_test.h" - -__RCSID("$MirOS$"); - -struct nesting_state { - int start_token; /* token than began nesting (eg, FOR) */ - int start_line; /* line nesting began on */ -}; - -static void yyparse(void); -static struct op *pipeline(int cf); -static struct op *andor(void); -static struct op *c_list(int multi); -static struct ioword *synio(int cf); -static void musthave(int c, int cf); -static struct op *nested(int type, int smark, int emark); -static struct op *get_command(int cf); -static struct op *dogroup(void); -static struct op *thenpart(void); -static struct op *elsepart(void); -static struct op *caselist(void); -static struct op *casepart(int endtok); -static struct op *function_body(char *name, int ksh_func); -static char ** wordlist(void); -static struct op *block(int type, struct op *t1, struct op *t2, - char **wp); -static struct op *newtp(int type); -static void syntaxerr(const char *what) - GCC_FUNC_ATTR(noreturn); -static void nesting_push(struct nesting_state *save, int tok); -static void nesting_pop(struct nesting_state *saved); -static int assign_command(char *s); -static int inalias(struct source *s); -static int dbtestp_isa(Test_env *te, Test_meta meta); -static const char *dbtestp_getopnd(Test_env *te, Test_op op, - int do_eval); -static int dbtestp_eval(Test_env *te, Test_op op, const char *opnd1, - const char *opnd2, int do_eval); -static void dbtestp_error(Test_env *te, int offset, const char *msg); - -static struct op *outtree; /* yyparse output */ - -static struct nesting_state nesting; /* \n changed to ; */ - -static int reject; /* token(cf) gets symbol again */ -static int symbol; /* yylex value */ - -#define REJECT (reject = 1) -#define ACCEPT (reject = 0) -#define token(cf) \ - ((reject) ? (ACCEPT, symbol) : (symbol = yylex(cf))) -#define tpeek(cf) \ - ((reject) ? (symbol) : (REJECT, symbol = yylex(cf))) - -static void -yyparse(void) -{ - int c; - - ACCEPT; - - outtree = c_list(source->type == SSTRING); - c = tpeek(0); - if (c == 0 && !outtree) - outtree = newtp(TEOF); - else if (c != '\n' && c != 0) - syntaxerr(NULL); -} - -static struct op * -pipeline(int cf) -{ - struct op *t, *p, *tl = NULL; - - t = get_command(cf); - if (t != NULL) { - while (token(0) == '|') { - if ((p = get_command(CONTIN)) == NULL) - syntaxerr(NULL); - if (tl == NULL) - t = tl = block(TPIPE, t, p, NOWORDS); - else - tl = tl->right = block(TPIPE, tl->right, p, NOWORDS); - } - REJECT; - } - return (t); -} - -static struct op * -andor(void) -{ - struct op *t, *p; - int c; - - t = pipeline(0); - if (t != NULL) { - while ((c = token(0)) == LOGAND || c == LOGOR) { - if ((p = pipeline(CONTIN)) == NULL) - syntaxerr(NULL); - t = block(c == LOGAND? TAND: TOR, t, p, NOWORDS); - } - REJECT; - } - return (t); -} - -static struct op * -c_list(int multi) -{ - struct op *t = NULL, *p, *tl = NULL; - int c; - int have_sep; - - while (1) { - p = andor(); - /* Token has always been read/rejected at this point, so - * we don't worry about what flags to pass token() - */ - c = token(0); - have_sep = 1; - if (c == '\n' && (multi || inalias(source))) { - if (!p) /* ignore blank lines */ - continue; - } else if (!p) - break; - else if (c == '&' || c == COPROC) - p = block(c == '&' ? TASYNC : TCOPROC, - p, NOBLOCK, NOWORDS); - else if (c != ';') - have_sep = 0; - if (!t) - t = p; - else if (!tl) - t = tl = block(TLIST, t, p, NOWORDS); - else - tl = tl->right = block(TLIST, tl->right, p, NOWORDS); - if (!have_sep) - break; - } - REJECT; - return t; -} - -static struct ioword * -synio(int cf) -{ - struct ioword *iop; - int ishere; - - if (tpeek(cf) != REDIR) - return NULL; - ACCEPT; - iop = yylval.iop; - ishere = (iop->flag&IOTYPE) == IOHERE; - musthave(LWORD, ishere ? HEREDELIM : 0); - if (ishere) { - iop->delim = yylval.cp; - if (*ident != 0) /* unquoted */ - iop->flag |= IOEVAL; - if (herep >= &heres[HERES]) - yyerror("too many <<'s\n"); - *herep++ = iop; - } else - iop->name = yylval.cp; - return iop; -} - -static void -musthave(int c, int cf) -{ - if ((token(cf)) != c) - syntaxerr(NULL); -} - -static struct op * -nested(int type, int smark, int emark) -{ - struct op *t; - struct nesting_state old_nesting; - - nesting_push(&old_nesting, smark); - t = c_list(true); - musthave(emark, KEYWORD|ALIAS); - nesting_pop(&old_nesting); - return (block(type, t, NOBLOCK, NOWORDS)); -} - -static struct op * -get_command(int cf) -{ - struct op *t; - int c, iopn = 0, syniocf; - struct ioword *iop, **iops; - XPtrV args, vars; - struct nesting_state old_nesting; - - iops = (struct ioword **) alloc(sizeofN(struct ioword *, NUFILE+1), - ATEMP); - XPinit(args, 16); - XPinit(vars, 16); - - syniocf = KEYWORD|ALIAS; - switch (c = token(cf|KEYWORD|ALIAS|VARASN)) { - default: - REJECT; - afree((void*) iops, ATEMP); - XPfree(args); - XPfree(vars); - return NULL; /* empty line */ - - case LWORD: - case REDIR: - REJECT; - syniocf &= ~(KEYWORD|ALIAS); - t = newtp(TCOM); - t->lineno = source->line; - while (1) { - cf = (t->u.evalflags ? ARRAYVAR : 0) - | (XPsize(args) == 0 ? ALIAS|VARASN : CMDWORD); - switch (tpeek(cf)) { - case REDIR: - if (iopn >= NUFILE) - yyerror("too many redirections\n"); - iops[iopn++] = synio(cf); - break; - - case LWORD: - ACCEPT; - /* the iopn == 0 and XPsize(vars) == 0 are - * dubious but at&t ksh acts this way - */ - if (iopn == 0 && XPsize(vars) == 0 - && XPsize(args) == 0 - && assign_command(ident)) - t->u.evalflags = DOVACHECK; - if ((XPsize(args) == 0 || Flag(FKEYWORD)) - && is_wdvarassign(yylval.cp)) - XPput(vars, yylval.cp); - else - XPput(args, yylval.cp); - break; - - case '(': - /* Check for "> foo (echo hi)", which at&t ksh - * allows (not POSIX, but not disallowed) - */ - afree(t, ATEMP); - if (XPsize(args) == 0 && XPsize(vars) == 0) { - ACCEPT; - goto Subshell; - } - /* Must be a function */ - if (iopn != 0 || XPsize(args) != 1 - || XPsize(vars) != 0) - syntaxerr(NULL); - ACCEPT; - /*(*/ - musthave(')', 0); - t = function_body(XPptrv(args)[0], false); - goto Leave; - - default: - goto Leave; - } - } - Leave: - break; - - Subshell: - case '(': - t = nested(TPAREN, '(', ')'); - break; - - case '{': /*}*/ - t = nested(TBRACE, '{', '}'); - break; - - case MDPAREN: - { - static const char let_cmd[] = { CHAR, 'l', CHAR, 'e', - CHAR, 't', EOS }; - /* Leave KEYWORD in syniocf (allow if (( 1 )) then ...) */ - t = newtp(TCOM); - t->lineno = source->line; - ACCEPT; - XPput(args, wdcopy(let_cmd, ATEMP)); - musthave(LWORD,LETEXPR); - XPput(args, yylval.cp); - break; - } - - case DBRACKET: /* [[ .. ]] */ - /* Leave KEYWORD in syniocf (allow if [[ -n 1 ]] then ...) */ - t = newtp(TDBRACKET); - ACCEPT; - { - Test_env te; - - te.flags = TEF_DBRACKET; - te.pos.av = &args; - te.isa = dbtestp_isa; - te.getopnd = dbtestp_getopnd; - te.eval = dbtestp_eval; - te.error = dbtestp_error; - - test_parse(&te); - } - break; - - case FOR: - case SELECT: - t = newtp((c == FOR) ? TFOR : TSELECT); - musthave(LWORD, ARRAYVAR); - if (!is_wdvarname(yylval.cp, true)) - yyerror("%s: bad identifier\n", - c == FOR ? "for" : "select"); - t->str = str_save(ident, ATEMP); - nesting_push(&old_nesting, c); - t->vars = wordlist(); - t->left = dogroup(); - nesting_pop(&old_nesting); - break; - - case WHILE: - case UNTIL: - nesting_push(&old_nesting, c); - t = newtp((c == WHILE) ? TWHILE : TUNTIL); - t->left = c_list(true); - t->right = dogroup(); - nesting_pop(&old_nesting); - break; - - case CASE: - t = newtp(TCASE); - musthave(LWORD, 0); - t->str = yylval.cp; - nesting_push(&old_nesting, c); - t->left = caselist(); - nesting_pop(&old_nesting); - break; - - case IF: - nesting_push(&old_nesting, c); - t = newtp(TIF); - t->left = c_list(true); - t->right = thenpart(); - musthave(FI, KEYWORD|ALIAS); - nesting_pop(&old_nesting); - break; - - case BANG: - syniocf &= ~(KEYWORD|ALIAS); - t = pipeline(0); - if (t == NULL) - syntaxerr(NULL); - t = block(TBANG, NOBLOCK, t, NOWORDS); - break; - - case TIME: - syniocf &= ~(KEYWORD|ALIAS); - t = pipeline(0); - t = block(TTIME, t, NOBLOCK, NOWORDS); - break; - - case FUNCTION: - musthave(LWORD, 0); - t = function_body(yylval.cp, true); - break; - } - - while ((iop = synio(syniocf)) != NULL) { - if (iopn >= NUFILE) - yyerror("too many redirections\n"); - iops[iopn++] = iop; - } - - if (iopn == 0) { - afree((void*) iops, ATEMP); - t->ioact = NULL; - } else { - iops[iopn++] = NULL; - iops = (struct ioword **) aresize((void*) iops, - sizeofN(struct ioword *, iopn), ATEMP); - t->ioact = iops; - } - - if (t->type == TCOM || t->type == TDBRACKET) { - XPput(args, NULL); - t->args = (char **) XPclose(args); - XPput(vars, NULL); - t->vars = (char **) XPclose(vars); - } else { - XPfree(args); - XPfree(vars); - } - - return t; -} - -static struct op * -dogroup(void) -{ - int c; - struct op *list; - - c = token(CONTIN|KEYWORD|ALIAS); - /* A {...} can be used instead of do...done for for/select loops - * but not for while/until loops - we don't need to check if it - * is a while loop because it would have been parsed as part of - * the conditional command list... - */ - if (c == DO) - c = DONE; - else if (c == '{') - c = '}'; - else - syntaxerr(NULL); - list = c_list(true); - musthave(c, KEYWORD|ALIAS); - return list; -} - -static struct op * -thenpart(void) -{ - struct op *t; - - musthave(THEN, KEYWORD|ALIAS); - t = newtp(0); - t->left = c_list(true); - if (t->left == NULL) - syntaxerr(NULL); - t->right = elsepart(); - return (t); -} - -static struct op * -elsepart(void) -{ - struct op *t; - - switch (token(KEYWORD|ALIAS|VARASN)) { - case ELSE: - if ((t = c_list(true)) == NULL) - syntaxerr(NULL); - return (t); - - case ELIF: - t = newtp(TELIF); - t->left = c_list(true); - t->right = thenpart(); - return (t); - - default: - REJECT; - } - return NULL; -} - -static struct op * -caselist(void) -{ - struct op *t, *tl; - int c; - - c = token(CONTIN|KEYWORD|ALIAS); - /* A {...} can be used instead of in...esac for case statements */ - if (c == IN) - c = ESAC; - else if (c == '{') - c = '}'; - else - syntaxerr(NULL); - t = tl = NULL; - while ((tpeek(CONTIN|KEYWORD|ESACONLY)) != c) { /* no ALIAS here */ - struct op *tc = casepart(c); - if (tl == NULL) - t = tl = tc, tl->right = NULL; - else - tl->right = tc, tl = tc; - } - musthave(c, KEYWORD|ALIAS); - return (t); -} - -static struct op * -casepart(int endtok) -{ - struct op *t; - int c; - XPtrV ptns; - - XPinit(ptns, 16); - t = newtp(TPAT); - c = token(CONTIN|KEYWORD); /* no ALIAS here */ - if (c != '(') - REJECT; - do { - musthave(LWORD, 0); - XPput(ptns, yylval.cp); - } while ((c = token(0)) == '|'); - REJECT; - XPput(ptns, NULL); - t->vars = (char **) XPclose(ptns); - musthave(')', 0); - - t->left = c_list(true); - /* Note: Posix requires the ;; */ - if ((tpeek(CONTIN|KEYWORD|ALIAS)) != endtok) - musthave(BREAK, CONTIN|KEYWORD|ALIAS); - return (t); -} - -static struct op * -function_body(char *name, int ksh_func) - - /* function foo { ... } vs foo() { .. } */ -{ - char *sname, *p; - struct op *t; - int old_func_parse; - - sname = wdstrip(name); - /* Check for valid characters in name. posix and ksh93 say only - * allow [a-zA-Z_0-9] but this allows more as old pdkshs have - * allowed more (the following were never allowed: - * nul space nl tab $ ' " \ ` ( ) & | ; = < > - * C_QUOTE covers all but = and adds # [ ? *) - */ - for (p = sname; *p; p++) - if (ctype(*p, C_QUOTE) || *p == '=') - yyerror("%s: invalid function name\n", sname); - - t = newtp(TFUNCT); - t->str = sname; - t->u.ksh_func = ksh_func; - t->lineno = source->line; - - /* Note that POSIX allows only compound statements after foo(), sh and - * at&t ksh allow any command, go with the later since it shouldn't - * break anything. However, for function foo, at&t ksh only accepts - * an open-brace. - */ - if (ksh_func) { - musthave('{', CONTIN|KEYWORD|ALIAS); /* } */ - REJECT; - } - - old_func_parse = e->flags & EF_FUNC_PARSE; - e->flags |= EF_FUNC_PARSE; - if ((t->left = get_command(CONTIN)) == NULL) { - /* - * Probably something like foo() followed by eof or ;. - * This is accepted by sh and ksh88. - * To make "typeset -f foo" work reliably (so its output can - * be used as input), we pretend there is a colon here. - */ - t->left = newtp(TCOM); - t->left->args = (char **) alloc(sizeof(char *) * 2, ATEMP); - t->left->args[0] = alloc(sizeof(char) * 3, ATEMP); - t->left->args[0][0] = CHAR; - t->left->args[0][1] = ':'; - t->left->args[0][2] = EOS; - t->left->args[1] = NULL; - t->left->vars = (char **) alloc(sizeof(char *), ATEMP); - t->left->vars[0] = NULL; - t->left->lineno = 1; - } - if (!old_func_parse) - e->flags &= ~EF_FUNC_PARSE; - - return t; -} - -static char ** -wordlist(void) -{ - int c; - XPtrV args; - - XPinit(args, 16); - /* Posix does not do alias expansion here... */ - if ((c = token(CONTIN|KEYWORD|ALIAS)) != IN) { - if (c != ';') /* non-POSIX, but at&t ksh accepts a ; here */ - REJECT; - return NULL; - } - while ((c = token(0)) == LWORD) - XPput(args, yylval.cp); - if (c != '\n' && c != ';') - syntaxerr(NULL); - if (XPsize(args) == 0) { - XPfree(args); - return NULL; - } else { - XPput(args, NULL); - return (char **) XPclose(args); - } -} - -/* - * supporting functions - */ - -static struct op * -block(int type, struct op *t1, struct op *t2, char **wp) -{ - struct op *t; - - t = newtp(type); - t->left = t1; - t->right = t2; - t->vars = wp; - return (t); -} - -const struct tokeninfo { - const char *name; - short val; - short reserved; -} tokentab[] = { - /* Reserved words */ - { "if", IF, true }, - { "then", THEN, true }, - { "else", ELSE, true }, - { "elif", ELIF, true }, - { "fi", FI, true }, - { "case", CASE, true }, - { "esac", ESAC, true }, - { "for", FOR, true }, - { "select", SELECT, true }, - { "while", WHILE, true }, - { "until", UNTIL, true }, - { "do", DO, true }, - { "done", DONE, true }, - { "in", IN, true }, - { "function", FUNCTION, true }, - { "time", TIME, true }, - { "{", '{', true }, - { "}", '}', true }, - { "!", BANG, true }, - { "[[", DBRACKET, true }, - /* Lexical tokens (0[EOF], LWORD and REDIR handled specially) */ - { "&&", LOGAND, false }, - { "||", LOGOR, false }, - { ";;", BREAK, false }, - { "((", MDPAREN, false }, - { "|&", COPROC, false }, - /* and some special cases... */ - { "newline", '\n', false }, - { NULL, 0, false } -}; - -void -initkeywords(void) -{ - struct tokeninfo const *tt; - struct tbl *p; - - tinit(&keywords, APERM, 32); /* must be 2^n (currently 20 keywords) */ - for (tt = tokentab; tt->name; tt++) { - if (tt->reserved) { - p = tenter(&keywords, tt->name, hash(tt->name)); - p->flag |= DEFINED|ISSET; - p->type = CKEYWD; - p->val.i = tt->val; - } - } -} - -static void -syntaxerr(const char *what) -{ - char redir[6]; /* 2<<- is the longest redirection, I think */ - const char *s; - struct tokeninfo const *tt; - int c; - - if (!what) - what = "unexpected"; - REJECT; - c = token(0); - Again: - switch (c) { - case 0: - if (nesting.start_token) { - c = nesting.start_token; - source->errline = nesting.start_line; - what = "unmatched"; - goto Again; - } - /* don't quote the EOF */ - yyerror("syntax error: unexpected EOF\n"); - /*NOTREACHED*/ - - case LWORD: - s = snptreef(NULL, 32, "%S", yylval.cp); - break; - - case REDIR: - s = snptreef(redir, sizeof(redir), "%R", yylval.iop); - break; - - default: - for (tt = tokentab; tt->name; tt++) - if (tt->val == c) - break; - if (tt->name) - s = tt->name; - else { - if (c > 0 && c < 256) { - redir[0] = c; - redir[1] = '\0'; - } else - shf_snprintf(redir, sizeof(redir), - "?%d", c); - s = redir; - } - } - yyerror("syntax error: '%s' %s\n", s, what); -} - -static void -nesting_push(struct nesting_state *save, int tok) -{ - *save = nesting; - nesting.start_token = tok; - nesting.start_line = source->line; -} - -static void -nesting_pop(struct nesting_state *saved) -{ - nesting = *saved; -} - -static struct op * -newtp(int type) -{ - struct op *t; - - t = (struct op *) alloc(sizeof(*t), ATEMP); - t->type = type; - t->u.evalflags = 0; - t->args = t->vars = NULL; - t->ioact = NULL; - t->left = t->right = NULL; - t->str = NULL; - return (t); -} - -struct op * -compile(Source *s) -{ - nesting.start_token = 0; - nesting.start_line = 0; - herep = heres; - source = s; - yyparse(); - return outtree; -} - -/* This kludge exists to take care of sh/at&t ksh oddity in which - * the arguments of alias/export/readonly/typeset have no field - * splitting, file globbing, or (normal) tilde expansion done. - * at&t ksh seems to do something similar to this since - * $ touch a=a; typeset a=[ab]; echo "$a" - * a=[ab] - * $ x=typeset; $x a=[ab]; echo "$a" - * a=a - * $ - */ -static int -assign_command(char *s) -{ - char c = *s; - - if (Flag(FPOSIX) || !*s) - return 0; - return (c == 'a' && strcmp(s, "alias") == 0) - || (c == 'e' && strcmp(s, "export") == 0) - || (c == 'r' && strcmp(s, "readonly") == 0) - || (c == 't' && strcmp(s, "typeset") == 0); -} - -/* Check if we are in the middle of reading an alias */ -static int -inalias(struct source *s) -{ - for (; s && s->type == SALIAS; s = s->next) - if (!(s->flags & SF_ALIASEND)) - return 1; - return 0; -} - - -/* Order important - indexed by Test_meta values - * Note that ||, &&, ( and ) can't appear in as unquoted strings - * in normal shell input, so these can be interpreted unambiguously - * in the evaluation pass. - */ -static const char dbtest_or[] = { CHAR, '|', CHAR, '|', EOS }; -static const char dbtest_and[] = { CHAR, '&', CHAR, '&', EOS }; -static const char dbtest_not[] = { CHAR, '!', EOS }; -static const char dbtest_oparen[] = { CHAR, '(', EOS }; -static const char dbtest_cparen[] = { CHAR, ')', EOS }; -const char *const dbtest_tokens[] = { - dbtest_or, dbtest_and, dbtest_not, - dbtest_oparen, dbtest_cparen - }; -const char db_close[] = { CHAR, ']', CHAR, ']', EOS }; -const char db_lthan[] = { CHAR, '<', EOS }; -const char db_gthan[] = { CHAR, '>', EOS }; - -/* Test if the current token is a whatever. Accepts the current token if - * it is. Returns 0 if it is not, non-zero if it is (in the case of - * TM_UNOP and TM_BINOP, the returned value is a Test_op). - */ -static int -dbtestp_isa(Test_env *te, Test_meta meta) -{ - int c = tpeek(ARRAYVAR | (meta == TM_BINOP ? 0 : CONTIN)); - int uqword = 0; - char *save = NULL; - int ret = 0; - - /* unquoted word? */ - uqword = c == LWORD && *ident; - - if (meta == TM_OR) - ret = c == LOGOR; - else if (meta == TM_AND) - ret = c == LOGAND; - else if (meta == TM_NOT) - ret = uqword && strcmp(yylval.cp, dbtest_tokens[(int) TM_NOT]) == 0; - else if (meta == TM_OPAREN) - ret = c == '(' /*)*/; - else if (meta == TM_CPAREN) - ret = c == /*(*/ ')'; - else if (meta == TM_UNOP || meta == TM_BINOP) { - if (meta == TM_BINOP && c == REDIR - && (yylval.iop->flag == IOREAD - || yylval.iop->flag == IOWRITE)) - { - ret = 1; - save = wdcopy(yylval.iop->flag == IOREAD ? - db_lthan : db_gthan, ATEMP); - } else if (uqword && (ret = (int) test_isop(te, meta, ident))) - save = yylval.cp; - } else /* meta == TM_END */ - ret = uqword && strcmp(yylval.cp, db_close) == 0; - if (ret) { - ACCEPT; - if (meta != TM_END) { - if (!save) - save = wdcopy(dbtest_tokens[(int) meta], ATEMP); - XPput(*te->pos.av, save); - } - } - return ret; -} - -static const char * -dbtestp_getopnd(Test_env *te, Test_op op GCC_FUNC_ATTR(unused), - int do_eval GCC_FUNC_ATTR(unused)) -{ - int c = tpeek(ARRAYVAR); - - if (c != LWORD) - return NULL; - - ACCEPT; - XPput(*te->pos.av, yylval.cp); - - return null; -} - -static int -dbtestp_eval(Test_env *te GCC_FUNC_ATTR(unused), - Test_op op GCC_FUNC_ATTR(unused), - const char *opnd1 GCC_FUNC_ATTR(unused), - const char *opnd2 GCC_FUNC_ATTR(unused), - int do_eval GCC_FUNC_ATTR(unused)) -{ - return 1; -} - -static void -dbtestp_error(Test_env *te, int offset, const char *msg) -{ - te->flags |= TEF_ERROR; - - if (offset < 0) { - REJECT; - /* Kludgy to say the least... */ - symbol = LWORD; - yylval.cp = *(XPptrv(*te->pos.av) + XPsize(*te->pos.av) - + offset); - } - syntaxerr(msg); -} diff --git a/table.c b/table.c deleted file mode 100644 index a44f5fd..0000000 --- a/table.c +++ /dev/null @@ -1,231 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: table.c,v 1.5 1999/01/10 17:55:03 millert Exp $ */ - -/* - * dynamic hashed associative table for commands and variables - */ - -#include "sh.h" - -__RCSID("$MirOS$"); - -#define INIT_TBLS 8 /* initial table size (power of 2) */ - -static void texpand(struct table *tp, int nsize); -static int tnamecmp(void *p1, void *p2); - - -unsigned int -hash(const char *n) -{ - unsigned int h = 0; - - while (*n != '\0') - h = 2*h + *n++; - return h * 32821; /* scatter bits */ -} - -void -tinit(struct table *tp, Area *ap, int tsize) -{ - tp->areap = ap; - tp->tbls = NULL; - tp->size = tp->nfree = 0; - if (tsize) - texpand(tp, tsize); -} - -static void -texpand(struct table *tp, int nsize) -{ - int i; - struct tbl *tblp, **p; - struct tbl **ntblp, **otblp = tp->tbls; - int osize = tp->size; - - ntblp = (struct tbl**) alloc(sizeofN(struct tbl *, nsize), tp->areap); - for (i = 0; i < nsize; i++) - ntblp[i] = NULL; - tp->size = nsize; - tp->nfree = 8*nsize/10; /* table can get 80% full */ - tp->tbls = ntblp; - if (otblp == NULL) - return; - for (i = 0; i < osize; i++) - if ((tblp = otblp[i]) != NULL) { - if ((tblp->flag&DEFINED)) { - for (p = &ntblp[hash(tblp->name) - & (tp->size-1)]; - *p != NULL; p--) - if (p == ntblp) /* wrap */ - p += tp->size; - *p = tblp; - tp->nfree--; - } else if (!(tblp->flag & FINUSE)) { - afree((void*)tblp, tp->areap); - } - } - afree((void*)otblp, tp->areap); -} - -struct tbl * -tsearch(struct table *tp, const char *n, unsigned int h) - /* table */ - /* name to enter */ - /* hash(n) */ -{ - struct tbl **pp, *p; - - if (tp->size == 0) - return NULL; - - /* search for name in hashed table */ - for (pp = &tp->tbls[h & (tp->size-1)]; (p = *pp) != NULL; pp--) { - if (*p->name == *n && strcmp(p->name, n) == 0 - && (p->flag&DEFINED)) - return p; - if (pp == tp->tbls) /* wrap */ - pp += tp->size; - } - - return NULL; -} - -struct tbl * -tenter(struct table *tp, const char *n, unsigned int h) - /* table */ - /* name to enter */ - /* hash(n) */ -{ - struct tbl **pp, *p; - int len; - - if (tp->size == 0) - texpand(tp, INIT_TBLS); - Search: - /* search for name in hashed table */ - for (pp = &tp->tbls[h & (tp->size-1)]; (p = *pp) != NULL; pp--) { - if (*p->name == *n && strcmp(p->name, n) == 0) - return p; /* found */ - if (pp == tp->tbls) /* wrap */ - pp += tp->size; - } - - if (tp->nfree <= 0) { /* too full */ - texpand(tp, 2*tp->size); - goto Search; - } - - /* create new tbl entry */ - len = strlen(n) + 1; - p = (struct tbl *) alloc(offsetof(struct tbl, name[0]) + len, - tp->areap); - p->flag = 0; - p->type = 0; - p->areap = tp->areap; - p->u2.field = 0; - p->u.array = NULL; - memcpy(p->name, n, len); - - /* enter in tp->tbls */ - tp->nfree--; - *pp = p; - return p; -} - -void -tdelete(struct tbl *p) -{ - p->flag = 0; -} - -void -twalk(struct tstate *ts, struct table *tp) -{ - ts->left = tp->size; - ts->next = tp->tbls; -} - -struct tbl * -tnext(struct tstate *ts) -{ - while (--ts->left >= 0) { - struct tbl *p = *ts->next++; - if (p != NULL && (p->flag&DEFINED)) - return p; - } - return NULL; -} - -static int -tnamecmp(void *p1, void *p2) -{ - return strcmp(((struct tbl *)p1)->name, ((struct tbl *)p2)->name); -} - -struct tbl ** -tsort(struct table *tp) -{ - int i; - struct tbl **p, **sp, **dp; - - p = (struct tbl **)alloc(sizeofN(struct tbl *, tp->size+1), ATEMP); - sp = tp->tbls; /* source */ - dp = p; /* dest */ - for (i = 0; i < tp->size; i++) - if ((*dp = *sp++) != NULL && (((*dp)->flag&DEFINED) || - ((*dp)->flag&ARRAY))) - dp++; - i = dp - p; - qsortp((void**)p, (size_t)i, tnamecmp); - p[i] = NULL; - return p; -} - -#ifdef PERF_DEBUG /* performance debugging */ - -void tprintinfo(struct table *tp); - -void -tprintinfo(tp) - struct table *tp; -{ - struct tbl *te; - char *n; - unsigned int h; - int ncmp; - int totncmp = 0, maxncmp = 0; - int nentries = 0; - struct tstate ts; - - shellf("table size %d, nfree %d\n", tp->size, tp->nfree); - shellf(" Ncmp name\n"); - twalk(&ts, tp); - while ((te = tnext(&ts))) { - struct tbl **pp, *p; - - h = hash(n = te->name); - ncmp = 0; - - /* taken from tsearch() and added counter */ - for (pp = &tp->tbls[h & (tp->size-1)]; (p = *pp); pp--) { - ncmp++; - if (*p->name == *n && strcmp(p->name, n) == 0 - && (p->flag&DEFINED)) - break; /* return p; */ - if (pp == tp->tbls) /* wrap */ - pp += tp->size; - } - shellf(" %4d %s\n", ncmp, n); - totncmp += ncmp; - nentries++; - if (ncmp > maxncmp) - maxncmp = ncmp; - } - if (nentries) - shellf(" %d entries, worst ncmp %d, avg ncmp %d.%02d\n", - nentries, maxncmp, - totncmp / nentries, - (totncmp % nentries) * 100 / nentries); -} -#endif /* PERF_DEBUG */ diff --git a/table.h b/table.h deleted file mode 100644 index 3ed37ea..0000000 --- a/table.h +++ /dev/null @@ -1,182 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: table.h,v 1.5 1999/06/15 01:18:36 millert Exp $ */ -/* $From: table.h,v 1.3 1994/05/31 13:34:34 michael Exp $ */ - -#ifndef TABLE_H -#define TABLE_H - -/* - * generic hashed associative table for commands and variables. - */ - -struct table { - Area *areap; /* area to allocate entries */ - short size, nfree; /* hash size (always 2^^n), free entries */ - struct tbl **tbls; /* hashed table items */ -}; - -struct tbl { /* table item */ - Tflag flag; /* flags */ - int type; /* command type (see below), base (if INTEGER), - * or offset from val.s of value (if EXPORT) */ - Area *areap; /* area to allocate from */ - union { - char *s; /* string */ - long i; /* integer */ - int (*f)(char **); /* int function */ - struct op *t; /* "function" tree */ - } val; /* value */ - int index; /* index for an array */ - union { - int field; /* field with for -L/-R/-Z */ - int errno_; /* CEXEC/CTALIAS */ - } u2; - union { - struct tbl *array; /* array values */ - char *fpath; /* temporary path to undef function */ - } u; - char name[4]; /* name -- variable length */ -}; - -/* common flag bits */ -#define ALLOC BIT(0) /* val.s has been allocated */ -#define DEFINED BIT(1) /* is defined in block */ -#define ISSET BIT(2) /* has value, vp->val.[si] */ -#define EXPORT BIT(3) /* exported variable/function */ -#define TRACE BIT(4) /* var: user flagged, func: execution tracing */ -/* (start non-common flags at 8) */ -/* flag bits used for variables */ -#define SPECIAL BIT(8) /* PATH, IFS, SECONDS, etc */ -#define INTEGER BIT(9) /* val.i contains integer value */ -#define RDONLY BIT(10) /* read-only variable */ -#define LOCAL BIT(11) /* for local typeset() */ -#define ARRAY BIT(13) /* array */ -#define LJUST BIT(14) /* left justify */ -#define RJUST BIT(15) /* right justify */ -#define ZEROFIL BIT(16) /* 0 filled if RJUSTIFY, strip 0s if LJUSTIFY */ -#define LCASEV BIT(17) /* convert to lower case */ -#define UCASEV_AL BIT(18)/* convert to upper case / autoload function */ -#define INT_U BIT(19) /* unsigned integer */ -#define INT_L BIT(20) /* long integer (no-op) */ -#define IMPORT BIT(21) /* flag to typeset(): no arrays, must have = */ -#define LOCAL_COPY BIT(22) /* with LOCAL - copy attrs from existing var */ -#define EXPRINEVAL BIT(23) /* contents currently being evaluated */ -#define EXPRLVALUE BIT(24) /* useable as lvalue (temp flag) */ -/* flag bits used for taliases/builtins/aliases/keywords/functions */ -#define KEEPASN BIT(8) /* keep command assignments (eg, var=x cmd) */ -#define FINUSE BIT(9) /* function being executed */ -#define FDELETE BIT(10) /* function deleted while it was executing */ -#define FKSH BIT(11) /* function defined with function x (vs x()) */ -#define SPEC_BI BIT(12) /* a POSIX special builtin */ -#define REG_BI BIT(13) /* a POSIX regular builtin */ -/* Attributes that can be set by the user (used to decide if an unset param - * should be repoted by set/typeset). Does not include ARRAY or LOCAL. - */ -#define USERATTRIB (EXPORT|INTEGER|RDONLY|LJUST|RJUST|ZEROFIL\ - |LCASEV|UCASEV_AL|INT_U|INT_L) - -/* command types */ -#define CNONE 0 /* undefined */ -#define CSHELL 1 /* built-in */ -#define CFUNC 2 /* function */ -#define CEXEC 4 /* executable command */ -#define CALIAS 5 /* alias */ -#define CKEYWD 6 /* keyword */ -#define CTALIAS 7 /* tracked alias */ - -/* Flags for findcom()/comexec() */ -#define FC_SPECBI BIT(0) /* special builtin */ -#define FC_FUNC BIT(1) /* function builtin */ -#define FC_REGBI BIT(2) /* regular builtin */ -#define FC_UNREGBI BIT(3) /* un-regular builtin (!special,!regular) */ -#define FC_BI (FC_SPECBI|FC_REGBI|FC_UNREGBI) -#define FC_PATH BIT(4) /* do path search */ -#define FC_DEFPATH BIT(5) /* use default path in path search */ - - -#define AF_ARGV_ALLOC 0x1 /* argv[] array allocated */ -#define AF_ARGS_ALLOCED 0x2 /* argument strings allocated */ -#define AI_ARGV(a, i) ((i) == 0 ? (a).argv[0] : (a).argv[(i) - (a).skip]) -#define AI_ARGC(a) ((a).argc_ - (a).skip) - -/* Argument info. Used for $#, $* for shell, functions, includes, etc. */ -struct arg_info { - int flags; /* AF_* */ - char **argv; - int argc_; - int skip; /* first arg is argv[0], second is argv[1 + skip] */ -}; - -/* - * activation record for function blocks - */ -struct block { - Area area; /* area to allocate things */ - /*struct arg_info argi;*/ - char **argv; - int argc; - int flags; /* see BF_* */ - struct table vars; /* local variables */ - struct table funs; /* local functions */ - Getopt getopts_state; - char * error; /* error handler */ - char * exit; /* exit handler */ - struct block *next; /* enclosing block */ -}; - -/* Values for struct block.flags */ -#define BF_DOGETOPTS BIT(0) /* save/restore getopts state */ - -/* - * Used by twalk() and tnext() routines. - */ -struct tstate { - int left; - struct tbl **next; -}; - - -EXTERN struct table taliases; /* tracked aliases */ -EXTERN struct table builtins; /* built-in commands */ -EXTERN struct table aliases; /* aliases */ -EXTERN struct table keywords; /* keywords */ -EXTERN struct table homedirs; /* homedir() cache */ - -struct builtin { - const char *name; - int (*func)(char **); -}; - -/* these really are externs! Look in table.c for them */ -extern const struct builtin shbuiltins [], kshbuiltins []; - -/* var spec values */ -#define V_NONE 0 -#define V_PATH 1 -#define V_IFS 2 -#define V_SECONDS 3 -#define V_OPTIND 4 -#define V_RANDOM 8 -#define V_HISTSIZE 9 -#define V_HISTFILE 10 -#define V_VISUAL 11 -#define V_EDITOR 12 -#define V_COLUMNS 13 -#define V_POSIXLY_CORRECT 14 -#define V_TMOUT 15 -#define V_TMPDIR 16 -#define V_LINENO 17 -#define V_PGRP 18 - -/* values for set_prompt() */ -#define PS1 0 /* command */ -#define PS2 1 /* command continuation */ - -EXTERN char *path; /* copy of either PATH or def_path */ -EXTERN const char *def_path; /* path to use if PATH not set */ -EXTERN char *tmpdir; /* TMPDIR value */ -EXTERN const char *prompt; -EXTERN int cur_prompt; /* PS1 or PS2 */ -EXTERN int current_lineno; /* LINENO value */ - -#endif /* ndef TABLE_H */ diff --git a/tests/alias.t b/tests/alias.t deleted file mode 100644 index ce434eb..0000000 --- a/tests/alias.t +++ /dev/null @@ -1,111 +0,0 @@ -name: alias-1 -description: - Check that recursion is detected/avoided in aliases. -stdin: - alias fooBar=fooBar - fooBar - exit 0 -expected-stderr-pattern: - /fooBar.*not found.*/ ---- - -name: alias-2 -description: - Check that recursion is detected/avoided in aliases. -stdin: - alias fooBar=barFoo - alias barFoo=fooBar - fooBar - barFoo - exit 0 -expected-stderr-pattern: - /fooBar.*not found.*\n.*barFoo.*not found/ ---- - -name: alias-3 -description: - Check that recursion is detected/avoided in aliases. -stdin: - alias Echo='echo ' - alias fooBar=barFoo - alias barFoo=fooBar - Echo fooBar - unalias barFoo - Echo fooBar -expected-stdout: - fooBar - barFoo ---- - -name: alias-4 -description: - Check that alias expansion isn't done on keywords (in keyword - postitions). -stdin: - alias Echo='echo ' - alias while=While - while false; do echo hi ; done - Echo while -expected-stdout: - While ---- - -name: alias-5 -description: - Check that alias expansion done after alias with trailing space. -stdin: - alias Echo='echo ' - alias foo='bar stuff ' - alias bar='Bar1 Bar2 ' - alias stuff='Stuff' - alias blah='Blah' - Echo foo blah -expected-stdout: - Bar1 Bar2 Stuff Blah ---- - -name: alias-6 -description: - Check that alias expansion done after alias with trailing space. -stdin: - alias Echo='echo ' - alias foo='bar bar' - alias bar='Bar ' - alias blah=Blah - Echo foo blah -expected-stdout: - Bar Bar Blah ---- - -name: alias-7 -description: - Check that alias expansion done after alias with trailing space - after a keyword. -stdin: - alias X='case ' - alias Y=Z - X Y in 'Y') echo is y ;; Z) echo is z ; esac -expected-stdout: - is z ---- - -name: alias-8 -description: - Check that newlines in an alias don't cause the command to be lost. -stdin: - alias foo=' - - - echo hi - - - - echo there - - - ' - foo -expected-stdout: - hi - there ---- diff --git a/tests/arith.t b/tests/arith.t deleted file mode 100644 index 71679e9..0000000 --- a/tests/arith.t +++ /dev/null @@ -1,78 +0,0 @@ -name: arith-lazy-1 -description: - Check that only one side of ternary operator is evaluated -stdin: - x=i+=2 - y=j+=2 - typeset -i i=1 j=1 - echo $((1 ? 20 : (x+=2))) - echo $i,$x - echo $((0 ? (y+=2) : 30)) - echo $j,$y -expected-stdout: - 20 - 1,i+=2 - 30 - 1,j+=2 ---- - -name: arith-lazy-2 -description: - Check that assignments not done on non-evaluated side of ternary - operator -stdin: - x=i+=2 - y=j+=2 - typeset -i i=1 j=1 - echo $((1 ? 20 : (x+=2))) - echo $i,$x - echo $((0 ? (y+=2) : 30)) - echo $i,$y -expected-stdout: - 20 - 1,i+=2 - 30 - 1,j+=2 ---- - -name: arith-ternary-prec-1 -description: - Check precidance of ternary operator vs assignment -stdin: - typeset -i x=2 - y=$((1 ? 20 : x+=2)) -expected-exit: e != 0 -expected-stderr-pattern: - /.*:.*1 \? 20 : x\+=2.*lvalue.*\n$/ ---- - -name: arith-ternary-prec-2 -description: - Check precidance of ternary operator vs assignment -stdin: - typeset -i x=2 - echo $((0 ? x+=2 : 20)) -expected-stdout: - 20 ---- - -name: arith-div-assoc-1 -description: - Check associativity of division operator -stdin: - echo $((20 / 2 / 2)) -expected-stdout: - 5 ---- - -name: arith-assop-assoc-1 -description: - Check associativity of assignment-operator operator -stdin: - typeset -i i=1 j=2 k=3 - echo $((i += j += k)) - echo $i,$j,$k -expected-stdout: - 6 - 6,5,3 ---- diff --git a/tests/bksl-nl.t b/tests/bksl-nl.t deleted file mode 100644 index 75d9f1a..0000000 --- a/tests/bksl-nl.t +++ /dev/null @@ -1,340 +0,0 @@ -# $MirOS$ -# $OpenBSD: bksl-nl.t,v 1.2 2001/01/28 23:04:56 niklas Exp $ -# -# These tests deal with how \newline is handled in various situations. The -# first group of tests are places where it shouldn't be collapsed, the next -# group of tests are places where it should be collapsed. -# -name: bksl-nl-ign-1 -description: - Check that \newline is not collasped after # -stdin: - echo hi #there \ - echo folks -expected-stdout: - hi - folks ---- - -name: bksl-nl-ign-2 -description: - Check that \newline is not collasped inside single quotes -stdin: - echo 'hi \ - there' - echo folks -expected-stdout: - hi \ - there - folks ---- - -name: bksl-nl-ign-3 -description: - Check that \newline is not collasped inside single quotes -stdin: - cat << \EOF - hi \ - there - EOF -expected-stdout: - hi \ - there ---- - -name: blsk-nl-ign-4 -description: - Check interaction of aliases, single quotes and here-documents - with backslash-newline - (don't know what posix has to say about this) -stdin: - a=2 - alias x='echo hi - cat << "EOF" - foo\ - bar - some' - x - more\ - stuff$a - EOF -expected-stdout: - hi - foo\ - bar - some - more\ - stuff$a ---- - -name: blsk-nl-ign-5 -description: - Check what happens with backslash at end of input - (the old bourne shell trashes them; so do we) -stdin: ! - echo `echo foo\\`bar - echo hi\ -expected-stdout: - foobar - hi ---- - - -# -# Places \newline should be collapsed -# -name: bksl-nl-1 -description: - Check that \newline is collasped before, in the middle of, and - after words -stdin: - \ - echo hi\ - There, \ - folks -expected-stdout: - hiThere, folks ---- - -name: bksl-nl-2 -description: - Check that \newline is collasped in $ sequences - (ksh93 fails this) -stdin: - a=12 - ab=19 - echo $\ - a - echo $a\ - b - echo $\ - {a} - echo ${a\ - b} - echo ${ab\ - } -expected-stdout: - 12 - 19 - 12 - 19 - 19 ---- - -name: bksl-nl-3 -description: - Check that \newline is collasped in $(..) and `...` sequences - (ksh93 fails this) -stdin: - echo $\ - (echo foobar1) - echo $(\ - echo foobar2) - echo $(echo foo\ - bar3) - echo $(echo foobar4\ - ) - echo ` - echo stuff1` - echo `echo st\ - uff2` -expected-stdout: - foobar1 - foobar2 - foobar3 - foobar4 - stuff1 - stuff2 ---- - -name: bksl-nl-4 -description: - Check that \newline is collasped in $((..)) sequences - (ksh93 fails this) -stdin: - echo $\ - ((1+2)) - echo $(\ - (1+2+3)) - echo $((\ - 1+2+3+4)) - echo $((1+\ - 2+3+4+5)) - echo $((1+2+3+4+5+6)\ - ) -expected-stdout: - 3 - 6 - 10 - 15 - 21 ---- - -name: bksl-nl-5 -description: - Check that \newline is collasped in double quoted strings -stdin: - echo "\ - hi" - echo "foo\ - bar" - echo "folks\ - " -expected-stdout: - hi - foobar - folks ---- - -name: bksl-nl-6 -description: - Check that \newline is collasped in here document delimiters - (ksh93 fails second part of this) -stdin: - a=12 - cat << EO\ - F - a=$a - foo\ - bar - EOF - cat << E_O_F - foo - E_O_\ - F - echo done -expected-stdout: - a=12 - foobar - foo - done ---- - -name: bksl-nl-7 -description: - Check that \newline is collasped in double-quoted here-document - delimiter. -stdin: - a=12 - cat << "EO\ - F" - a=$a - foo\ - bar - EOF - echo done -expected-stdout: - a=$a - foo\ - bar - done ---- - -name: bksl-nl-8 -description: - Check that \newline is collasped in various 2+ character tokens - delimiter. - (ksh93 fails this) -stdin: - echo hi &\ - & echo there - echo foo |\ - | echo bar - cat <\ - < EOF - stuff - EOF - cat <\ - <\ - - EOF - more stuff - EOF - cat <<\ - EOF - abcdef - EOF - echo hi >\ - > /dev/null - echo $? - i=1 - case $i in - (\ - x|\ - 1\ - ) echo hi;\ - ; - (*) echo oops - esac -expected-stdout: - hi - there - foo - stuff - more stuff - abcdef - 0 - hi ---- - -name: blsk-nl-9 -description: - Check that \ at the end of an alias is collapsed when followed - by a newline - (don't know what posix has to say about this) -stdin: - alias x='echo hi\' - x - echo there -expected-stdout: - hiecho there ---- - -name: blsk-nl-10 -description: - Check that \newline in a keyword is collapsed -stdin: - i\ - f true; then\ - echo pass; el\ - se echo fail; fi -expected-stdout: - pass ---- - -# -# Places \newline should be collapsed (ksh extensions) -# - -name: blsk-nl-ksh-1 -description: - Check that \newline is collapsed in extended globbing - (ksh93 fails this) -stdin: - xxx=foo - case $xxx in - (f*\ - (\ - o\ - )\ - ) echo ok ;; - *) echo bad - esac -expected-stdout: - ok ---- - -name: blsk-nl-ksh-2 -description: - Check that \newline is collapsed in ((...)) expressions - (ksh93 fails this) -stdin: - i=1 - (\ - (\ - i=i+2\ - )\ - ) - echo $i -expected-stdout: - 3 ---- diff --git a/tests/brkcont.t b/tests/brkcont.t deleted file mode 100644 index f6abbb3..0000000 --- a/tests/brkcont.t +++ /dev/null @@ -1,193 +0,0 @@ -name: break-1 -description: - See if break breaks out of loops -stdin: - for i in a b c; do echo $i; break; echo bad-$i; done - echo end-1 - for i in a b c; do echo $i; break 1; echo bad-$i; done - echo end-2 - for i in a b c; do - for j in x y z; do - echo $i:$j - break - echo bad-$i - done - echo end-$i - done - echo end-3 -expected-stdout: - a - end-1 - a - end-2 - a:x - end-a - b:x - end-b - c:x - end-c - end-3 ---- - -name: break-2 -description: - See if break breaks out of nested loops -stdin: - for i in a b c; do - for j in x y z; do - echo $i:$j - break 2 - echo bad-$i - done - echo end-$i - done - echo end -expected-stdout: - a:x - end ---- - - -name: break-3 -description: - What if break used outside of any loops - (ksh88,ksh93 don't print error messages here) -stdin: - break -expected-stderr-pattern: - /.*break.*/ ---- - - -name: break-4 -description: - What if break N used when only N-1 loops - (ksh88,ksh93 don't print error messages here) -stdin: - for i in a b c; do echo $i; break 2; echo bad-$i; done - echo end -expected-stdout: - a - end -expected-stderr-pattern: - /.*break.*/ ---- - - -name: break-5 -description: - Error if break argument isn't a number -stdin: - for i in a b c; do echo $i; break abc; echo more-$i; done - echo end -expected-stdout: - a -expected-exit: e != 0 -expected-stderr-pattern: - /.*break.*/ ---- - - -name: continue-1 -description: - See if continue continues loops -stdin: - for i in a b c; do echo $i; continue; echo bad-$i ; done - echo end-1 - for i in a b c; do echo $i; continue 1; echo bad-$i; done - echo end-2 - for i in a b c; do - for j in x y z; do - echo $i:$j - continue - echo bad-$i-$j - done - echo end-$i - done - echo end-3 -expected-stdout: - a - b - c - end-1 - a - b - c - end-2 - a:x - a:y - a:z - end-a - b:x - b:y - b:z - end-b - c:x - c:y - c:z - end-c - end-3 ---- - - -name: continue-2 -description: - See if continue breaks out of nested loops -stdin: - for i in a b c; do - for j in x y z; do - echo $i:$j - continue 2 - echo bad-$i-$j - done - echo end-$i - done - echo end -expected-stdout: - a:x - b:x - c:x - end ---- - - -name: continue-3 -description: - What if continue used outside of any loops - (ksh88,ksh93 don't print error messages here) -stdin: - continue -expected-stderr-pattern: - /.*continue.*/ ---- - - -name: continue-4 -description: - What if continue N used when only N-1 loops - (ksh88,ksh93 don't print error messages here) -stdin: - for i in a b c; do echo $i; continue 2; echo bad-$i; done - echo end -expected-stdout: - a - b - c - end -expected-stderr-pattern: - /.*continue.*/ ---- - - -name: continue-5 -description: - Error if continue argument isn't a number -stdin: - for i in a b c; do echo $i; continue abc; echo more-$i; done - echo end -expected-stdout: - a -expected-exit: e != 0 -expected-stderr-pattern: - /.*continue.*/ ---- diff --git a/tests/cdhist.t b/tests/cdhist.t deleted file mode 100644 index 5c5d4f2..0000000 --- a/tests/cdhist.t +++ /dev/null @@ -1,162 +0,0 @@ -name: cd-history -description: - Test someone's CD history package (uses arrays) -# Fails on OS/2, since directory names are prepended with drive letter. -category: !os:os2 -stdin: - # go to known place before doing anything - cd / - - alias cd=_cd - function _cd - { - typeset -i cdlen i - typeset t - - if [ $# -eq 0 ] - then - set -- $HOME - fi - - if [ "$CDHISTFILE" -a -r "$CDHISTFILE" ] # if directory history exists - then - typeset CDHIST - i=-1 - while read -r t # read directory history file - do - CDHIST[i=i+1]=$t - done <$CDHISTFILE - fi - - if [ "${CDHIST[0]}" != "$PWD" -a "$PWD" != "" ] - then - _cdins # insert $PWD into cd history - fi - - cdlen=${#CDHIST[*]} # number of elements in history - - case "$@" in - -) # cd to new dir - if [ "$OLDPWD" = "" ] && ((cdlen>1)) - then - 'print' ${CDHIST[1]} - 'cd' ${CDHIST[1]} - _pwd - else - 'cd' $@ - _pwd - fi - ;; - -l) # print directory list - typeset -R3 num - ((i=cdlen)) - while (((i=i-1)>=0)) - do - num=$i - 'print' "$num ${CDHIST[i]}" - done - return - ;; - -[0-9]|-[0-9][0-9]) # cd to dir in list - if (((i=${1#-})=cdlen)) - then - 'cd' $@ - _pwd - fi - ;; - *) # cd to new dir - 'cd' $@ - _pwd - ;; - esac - - _cdins # insert $PWD into cd history - - if [ "$CDHISTFILE" ] - then - cdlen=${#CDHIST[*]} # number of elements in history - - i=0 - while ((i$CDHISTFILE - fi - } - - function _cdins # insert $PWD into cd history - { # meant to be called only by _cd - typeset -i i - - ((i=0)) - while ((i<${#CDHIST[*]})) # see if dir is already in list - do - if [ "${CDHIST[$i]}" = "$PWD" ] - then - break - fi - ((i=i+1)) - done - - if ((i>22)) # limit max size of list - then - i=22 - fi - - while (((i=i-1)>=0)) # bump old dirs in list - do - CDHIST[i+1]=${CDHIST[i]} - done - - CDHIST[0]=$PWD # insert new directory in list - } - - - function _pwd - { - if [ -n "$ECD" ] - then - pwd 1>&6 - fi - } - # Start of test - cd /tmp - cd /bin - cd /etc - cd - - cd -2 - cd -l -expected-stdout: - /bin - /tmp - 3 / - 2 /etc - 1 /bin - 0 /tmp ---- diff --git a/tests/eglob.t b/tests/eglob.t deleted file mode 100644 index 9301e48..0000000 --- a/tests/eglob.t +++ /dev/null @@ -1,144 +0,0 @@ -name: eglob-bad-1 -description: - Check that globbing isn't done when glob has syntax error -file-setup: file 644 "abcx" -file-setup: file 644 "abcz" -file-setup: file 644 "bbc" -stdin: - echo !([*)* - echo +(a|b[)* -expected-stdout: - !([*)* - +(a|b[)* ---- - -name: eglob-bad-2 -description: - Check that globbing isn't done when glob has syntax error - (at&t ksh fails this test) -file-setup: file 644 "abcx" -file-setup: file 644 "abcz" -file-setup: file 644 "bbc" -stdin: - echo [a*(]*)z -expected-stdout: - [a*(]*)z ---- - -name: eglob-infinite-plus -description: - Check that shell doesn't go into infinite loop expanding +(...) - expressions. -file-setup: file 644 "abc" -time-limit: 3 -stdin: - echo +()c - echo +()x - echo +(*)c - echo +(*)x -expected-stdout: - +()c - +()x - abc - +(*)x ---- - -name: eglob-subst-1 -description: - Check that eglobbing isn't done on substitution results -file-setup: file 644 "abc" -stdin: - x='@(*)' - echo $x -expected-stdout: - @(*) ---- - -name: eglob-nomatch-1 -description: - Check that the pattern doesn't match -stdin: - echo 1: no-file+(a|b)stuff - echo 2: no-file+(a*(c)|b)stuff - echo 3: no-file+((((c)))|b)stuff -expected-stdout: - 1: no-file+(a|b)stuff - 2: no-file+(a*(c)|b)stuff - 3: no-file+((((c)))|b)stuff ---- - -name: eglob-match-1 -description: - Check that the pattern matches correctly -file-setup: file 644 "abd" -file-setup: file 644 "acd" -file-setup: file 644 "abac" -stdin: - echo 1: a+(b|c)d - echo 2: a!(@(b|B))d - echo 3: *(a(b|c)) # (...|...) can be used within X(..) - echo 4: a[b*(foo|bar)]d # patterns not special inside [...] -expected-stdout: - 1: abd acd - 2: acd - 3: abac - 4: abd ---- - -name: eglob-case-1 -description: - Simple negation tests -stdin: - case foo in !(foo|bar)) echo yes;; *) echo no;; esac - case bar in !(foo|bar)) echo yes;; *) echo no;; esac -expected-stdout: - no - no ---- - -name: eglob-case-2 -description: - Simple kleene tests -stdin: - case foo in *(a|b[)) echo yes;; *) echo no;; esac - case foo in *(a|b[)|f*) echo yes;; *) echo no;; esac - case '*(a|b[)' in *(a|b[)) echo yes;; *) echo no;; esac -expected-stdout: - no - yes - yes ---- - -name: eglob-trim-1 -description: - Eglobing in trim expressions... - (at&t ksh fails this - docs say # matches shortest string, ## matches - longest...) -stdin: - x=abcdef - echo 1: ${x#a|abc} - echo 2: ${x##a|abc} - echo 3: ${x%def|f} - echo 4: ${x%%f|def} -expected-stdout: - 1: bcdef - 2: def - 3: abcde - 4: abc ---- - -name: eglob-trim-2 -description: - Check eglobing works in trims... -stdin: - x=abcdef - echo 1: ${x#*(a|b)cd} - echo 2: "${x#*(a|b)cd}" - echo 3: ${x#"*(a|b)cd"} - echo 4: ${x#a(b|c)} -expected-stdout: - 1: ef - 2: ef - 3: abcdef - 4: cdef ---- diff --git a/tests/glob.t b/tests/glob.t deleted file mode 100644 index 6e6a391..0000000 --- a/tests/glob.t +++ /dev/null @@ -1,98 +0,0 @@ -name: glob-bad-1 -description: - Check that globbing isn't done when glob has syntax error -file-setup: dir 755 "[x" -file-setup: file 644 "[x/foo" -stdin: - echo [* - echo *[x - echo [x/* -expected-stdout: - [* - *[x - [x/foo ---- - -name: glob-bad-2 -description: - Check that symbolic links aren't stat()'d -category: !os:os2 -file-setup: dir 755 "dir" -file-setup: symlink 644 "dir/abc" - non-existent-file -stdin: - echo d*/* - echo d*/abc -expected-stdout: - dir/abc - dir/abc ---- - -name: glob-range-1 -description: - Test range matching -file-setup: file 644 ".bc" -file-setup: file 644 "abc" -file-setup: file 644 "bbc" -file-setup: file 644 "cbc" -file-setup: file 644 "-bc" -stdin: - echo [ab-]* - echo [-ab]* - echo [!-ab]* - echo [!ab]* - echo []ab]* -expected-stdout: - -bc abc bbc - -bc abc bbc - cbc - -bc cbc - abc bbc ---- - -name: glob-range-2 -description: - Test range matching - (at&t ksh fails this; POSIX says invalid) -file-setup: file 644 "abc" -stdin: - echo [a--]* -expected-stdout: - [a--]* ---- - -name: glob-range-3 -description: - Check that globbing matches the right things... -file-setup: file 644 "aÂc" -stdin: - echo a[Á-Ú]* -expected-stdout: - aÂc ---- - -name: glob-range-4 -description: - Results unspecified according to POSIX -file-setup: file 644 ".bc" -stdin: - echo [a.]* -expected-stdout: - [a.]* ---- - -name: glob-range-5 -description: - Results unspecified according to POSIX - (at&t ksh treats this like [a-cc-e]*) -file-setup: file 644 "abc" -file-setup: file 644 "bbc" -file-setup: file 644 "cbc" -file-setup: file 644 "dbc" -file-setup: file 644 "ebc" -file-setup: file 644 "-bc" -stdin: - echo [a-c-e]* -expected-stdout: - -bc abc bbc cbc ebc ---- diff --git a/tests/heredoc.t b/tests/heredoc.t deleted file mode 100644 index 2537e0f..0000000 --- a/tests/heredoc.t +++ /dev/null @@ -1,330 +0,0 @@ -name: heredoc-1 -description: - Check ordering/content of redundent here documents. -stdin: - cat << EOF1 << EOF2 - hi - EOF1 - there - EOF2 -expected-stdout: - there ---- - -name: heredoc-2 -description: - Check quoted here-doc is protected. -stdin: - a=foo - cat << 'EOF' - hi\ - there$a - stuff - EO\ - F - EOF -expected-stdout: - hi\ - there$a - stuff - EO\ - F ---- - -name: heredoc-3 -description: - Check that newline isn't needed after heredoc-delimiter marker. -stdin: ! - cat << EOF - hi - there - EOF -expected-stdout: - hi - there ---- - -name: heredoc-4 -description: - Check that an error occurs if the heredoc-delimiter is missing. -stdin: ! - cat << EOF - hi - there -expected-exit: e > 0 -expected-stderr-pattern: /.*/ ---- - -name: heredoc-5 -description: - Check that backslash quotes a $, ` and \ and kills a \newline -stdin: - a=BAD - b=ok - cat << EOF - h\${a}i - h\\${b}i - th\`echo not-run\`ere - th\\`echo is-run`ere - fol\\ks - more\\ - last \ - line - EOF -expected-stdout: - h${a}i - h\oki - th`echo not-run`ere - th\is-runere - fol\ks - more\ - last line ---- - -name: heredoc-6 -description: - Check that \newline in initial here-delim word doesn't imply - a quoted here-doc. -stdin: - a=i - cat << EO\ - F - h$a - there - EOF -expected-stdout: - hi - there ---- - -name: heredoc-7 -description: - Check that double quoted $ expressions in here delimiters are - not expanded and match the delimiter. - POSIX says only quote removal is applied to the delimiter. -stdin: - a=b - cat << "E$a" - hi - h$a - hb - E$a - echo done -expected-stdout: - hi - h$a - hb - done ---- - -name: heredoc-8 -description: - Check that double quoted escaped $ expressions in here - delimiters are not expanded and match the delimiter. - POSIX says only quote removal is applied to the delimiter - (\ counts as a quote). -stdin: - a=b - cat << "E\$a" - hi - h$a - h\$a - hb - h\b - E$a - echo done -expected-stdout: - hi - h$a - h\$a - hb - h\b - done ---- - -name: heredoc-tmpfile-1 -description: - Check that heredoc temp files aren't removed too soon or too late. - Heredoc in simple command. -stdin: - TMPDIR=$PWD - eval ' - cat <<- EOF - hi - EOF - for i in a b ; do - cat <<- EOF - more - EOF - done - ' & - sleep 1 - echo Left overs: * -expected-stdout: - hi - more - more - Left overs: * ---- - -name: heredoc-tmpfile-2 -description: - Check that heredoc temp files aren't removed too soon or too late. - Heredoc in function, multiple calls to function. -stdin: - TMPDIR=$PWD - eval ' - foo() { - cat <<- EOF - hi - EOF - } - foo - foo - ' & - sleep 1 - echo Left overs: * -expected-stdout: - hi - hi - Left overs: * ---- - -name: heredoc-tmpfile-3 -description: - Check that heredoc temp files aren't removed too soon or too late. - Heredoc in function in loop, multiple calls to function. -stdin: - TMPDIR=$PWD - eval ' - foo() { - cat <<- EOF - hi - EOF - } - for i in a b; do - foo - foo() { - cat <<- EOF - folks $i - EOF - } - done - foo - ' & - sleep 1 - echo Left overs: * -expected-stdout: - hi - folks b - folks b - Left overs: * ---- - -name: heredoc-tmpfile-4 -description: - Check that heredoc temp files aren't removed too soon or too late. - Backgrounded simple command with here doc -stdin: - TMPDIR=$PWD - eval ' - cat <<- EOF & - hi - EOF - ' & - sleep 1 - echo Left overs: * -expected-stdout: - hi - Left overs: * ---- - -name: heredoc-tmpfile-5 -description: - Check that heredoc temp files aren't removed too soon or too late. - Backgrounded subshell command with here doc -stdin: - TMPDIR=$PWD - eval ' - ( - sleep 1 # so parent exits - echo A - cat <<- EOF - hi - EOF - echo B - ) & - ' & - sleep 2 - echo Left overs: * -expected-stdout: - A - hi - B - Left overs: * ---- - -name: heredoc-tmpfile-6 -description: - Check that heredoc temp files aren't removed too soon or too late. - Heredoc in pipeline. -stdin: - TMPDIR=$PWD - eval ' - cat <<- EOF | sed "s/hi/HI/" - hi - EOF - ' & - sleep 1 - echo Left overs: * -expected-stdout: - HI - Left overs: * ---- - -name: heredoc-tmpfile-7 -description: - Check that heredoc temp files aren't removed too soon or too late. - Heredoc in backgrounded pipeline. -stdin: - TMPDIR=$PWD - eval ' - cat <<- EOF | sed 's/hi/HI/' & - hi - EOF - ' & - sleep 1 - echo Left overs: * -expected-stdout: - HI - Left overs: * ---- - -name: heredoc-tmpfile-8 -description: - Check that heredoc temp files aren't removed too soon or too late. - Heredoc in function, backgrounded call to function. -stdin: - TMPDIR=$PWD - # Background eval so main shell doesn't do parsing - eval ' - foo() { - cat <<- EOF - hi - EOF - } - foo - # sleep so eval can die - (sleep 1; foo) & - (sleep 1; foo) & - foo - ' & - sleep 2 - echo Left overs: * -expected-stdout: - hi - hi - hi - hi - Left overs: * ---- diff --git a/tests/history.t b/tests/history.t deleted file mode 100644 index ffc6600..0000000 --- a/tests/history.t +++ /dev/null @@ -1,560 +0,0 @@ -# $MirOS$ -# $OpenBSD: history.t,v 1.5 2001/01/28 23:04:56 niklas Exp $ -# -# Not tested yet: -# - commands in history file are not numbered negatively -# (and a few hundred other things) - -name: history-basic -description: - See if we can test history at all -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo hi - fc -l -expected-stdout: - hi - 1 echo hi -expected-stderr-pattern: - /^X*$/ ---- - -name: history-e-minus-1 -description: - Check if more recent command is executed -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo hi - echo there - fc -e - -expected-stdout: - hi - there - there -expected-stderr-pattern: - /^X*echo there\nX*$/ ---- - -name: history-e-minus-2 -description: - Check that repeated command is printed before command - is re-executed. -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - exec 2>&1 - echo hi - echo there - fc -e - -expected-stdout-pattern: - /X*hi\nX*there\nX*echo there\nthere\nX*/ -expected-stderr-pattern: - /^X*$/ ---- - -name: history-e-minus-3 -description: - fc -e - fails when there is no history - (ksh93 has a bug that causes this to fail) - (ksh88 loops on this) -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - fc -e - - echo ok -expected-stdout: - ok -expected-stderr-pattern: - /^X*.*:.*history.*\nX*$/ ---- - -name: history-e-minus-4 -description: - Check if "fc -e -" command output goes to stdout. -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc - fc -e - | (read x; echo "A $x") - echo ok -expected-stdout: - abc - A abc - ok -expected-stderr-pattern: - /^X*echo abc\nX*/ ---- - -name: history-e-minus-5 -description: - fc is replaced in history by new command. -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def - echo ghi jkl - fc -e - echo - fc -l 2 4 -expected-stdout: - abc def - ghi jkl - ghi jkl - 2 echo ghi jkl - 3 echo ghi jkl - 4 fc -l 2 4 -expected-stderr-pattern: - /^X*echo ghi jkl\nX*$/ ---- - -name: history-list-1 -description: - List lists correct range - (ksh88 fails 'cause it lists the fc command) -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - fc -l -- -2 -expected-stdout: - line 1 - line 2 - line 3 - 2 echo line 2 - 3 echo line 3 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-2 -description: - Lists oldest history if given pre-historic number - (ksh93 has a bug that causes this to fail) - (ksh88 fails 'cause it lists the fc command) -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - fc -l -- -40 -expected-stdout: - line 1 - line 2 - line 3 - 1 echo line 1 - 2 echo line 2 - 3 echo line 3 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-3 -description: - Can give number 'options' to fc -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - fc -l -3 -2 -expected-stdout: - line 1 - line 2 - line 3 - line 4 - 2 echo line 2 - 3 echo line 3 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-4 -description: - -1 refers to previous command -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - fc -l -1 -1 -expected-stdout: - line 1 - line 2 - line 3 - line 4 - 4 echo line 4 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-5 -description: - List command stays in history -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - fc -l -1 -1 - fc -l -2 -1 -expected-stdout: - line 1 - line 2 - line 3 - line 4 - 4 echo line 4 - 4 echo line 4 - 5 fc -l -1 -1 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-6 -description: - HISTSIZE limits about of history kept. - (ksh88 fails 'cause it lists the fc command) -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file!HISTSIZE=3! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - echo line 5 - fc -l -expected-stdout: - line 1 - line 2 - line 3 - line 4 - line 5 - 4 echo line 4 - 5 echo line 5 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-7 -description: - fc allows too old/new errors in range specification -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file!HISTSIZE=3! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - echo line 5 - fc -l 1 30 -expected-stdout: - line 1 - line 2 - line 3 - line 4 - line 5 - 4 echo line 4 - 5 echo line 5 - 6 fc -l 1 30 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-r-1 -description: - test -r flag in history -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - echo line 5 - fc -l -r 2 4 -expected-stdout: - line 1 - line 2 - line 3 - line 4 - line 5 - 4 echo line 4 - 3 echo line 3 - 2 echo line 2 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-r-2 -description: - If first is newer than last, -r is implied. -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - echo line 5 - fc -l 4 2 -expected-stdout: - line 1 - line 2 - line 3 - line 4 - line 5 - 4 echo line 4 - 3 echo line 3 - 2 echo line 2 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-list-r-3 -description: - If first is newer than last, -r is cancelled. -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 - echo line 3 - echo line 4 - echo line 5 - fc -l -r 4 2 -expected-stdout: - line 1 - line 2 - line 3 - line 4 - line 5 - 2 echo line 2 - 3 echo line 3 - 4 echo line 4 -expected-stderr-pattern: - /^X*$/ ---- - -name: history-subst-1 -description: - Basic substitution -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def - echo ghi jkl - fc -e - abc=AB 'echo a' -expected-stdout: - abc def - ghi jkl - AB def -expected-stderr-pattern: - /^X*echo AB def\nX*$/ ---- - -name: history-subst-2 -description: - Does subst find previous command? -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def - echo ghi jkl - fc -e - jkl=XYZQRT 'echo g' -expected-stdout: - abc def - ghi jkl - ghi XYZQRT -expected-stderr-pattern: - /^X*echo ghi XYZQRT\nX*$/ ---- - -name: history-subst-3 -description: - Does subst find previous command when no arguments given -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def - echo ghi jkl - fc -e - jkl=XYZQRT -expected-stdout: - abc def - ghi jkl - ghi XYZQRT -expected-stderr-pattern: - /^X*echo ghi XYZQRT\nX*$/ ---- - -name: history-subst-4 -description: - Global substitutions work - (ksh88 and ksh93 do not have -g option) -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def asjj sadjhasdjh asdjhasd - fc -e - -g a=FooBAR -expected-stdout: - abc def asjj sadjhasdjh asdjhasd - FooBARbc def FooBARsjj sFooBARdjhFooBARsdjh FooBARsdjhFooBARsd -expected-stderr-pattern: - /^X*echo FooBARbc def FooBARsjj sFooBARdjhFooBARsdjh FooBARsdjhFooBARsd\nX*$/ ---- - -name: history-subst-5 -description: - Make sure searches don't find current (fc) command - (ksh88/ksh93 don't have the ? prefix thing so they fail this test) -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def - echo ghi jkl - fc -e - abc=AB \?abc -expected-stdout: - abc def - ghi jkl - AB def -expected-stderr-pattern: - /^X*echo AB def\nX*$/ ---- - -name: history-ed-1 -description: - Basic (ed) editing works (assumes you have generic ed editor - that prints no prompts). -# No ed on os/2 (yet?). -category: !os:os2 -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def - fc echo - s/abc/FOOBAR/ - w - q -expected-stdout: - abc def - 13 - 16 - FOOBAR def -expected-stderr-pattern: - /^X*echo FOOBAR def\nX*$/ ---- - -name: history-ed-2 -description: - Correct command is edited when number given -category: !os:os2 -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo line 1 - echo line 2 is here - echo line 3 - echo line 4 - fc 2 - s/is here/is changed/ - w - q -expected-stdout: - line 1 - line 2 is here - line 3 - line 4 - 20 - 23 - line 2 is changed -expected-stderr-pattern: - /^X*echo line 2 is changed\nX*$/ ---- - -name: history-ed-3 -description: - Newly created multi line commands show up as single command - in history. - (NOTE: will fail if using COMPLEX HISTORY compile time option) - (ksh88 fails 'cause it lists the fc command) -category: !os:os2 -arguments: !-i! -env-setup: !ENV=./Env!HISTFILE=hist.file! -file-setup: file 644 "Env" - PS1=X -stdin: - echo abc def - fc echo - s/abc/FOOBAR/ - $a - echo a new line - . - w - q - fc -l -expected-stdout: - abc def - 13 - 32 - FOOBAR def - a new line - 1 echo abc def - 2 echo FOOBAR def - echo a new line -expected-stderr-pattern: - /^X*echo FOOBAR def\necho a new line\nX*$/ ---- diff --git a/tests/ifs.t b/tests/ifs.t deleted file mode 100644 index c6be027..0000000 --- a/tests/ifs.t +++ /dev/null @@ -1,175 +0,0 @@ -name: IFS-space-1 -description: - Simple test, default IFS -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - set -- A B C - showargs 1 $* - showargs 2 "$*" - showargs 3 $@ - showargs 4 "$@" -expected-stdout: - <1> - <2> - <3> - <4> ---- - -name: IFS-colon-1 -description: - Simple test, IFS=: -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS=: - set -- A B C - showargs 1 $* - showargs 2 "$*" - showargs 3 $@ - showargs 4 "$@" -expected-stdout: - <1> - <2> - <3> - <4> ---- - -name: IFS-null-1 -description: - Simple test, IFS="" -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS="" - set -- A B C - showargs 1 $* - showargs 2 "$*" - showargs 3 $@ - showargs 4 "$@" -expected-stdout: - <1> - <2> - <3> - <4> ---- - -name: IFS-space-colon-1 -description: - Simple test, IFS=: -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS="$IFS:" - set -- - showargs 1 $* - showargs 2 "$*" - showargs 3 $@ - showargs 4 "$@" - showargs 5 : "$@" -expected-stdout: - <1> - <2> <> - <3> - <4> - <5> <:> ---- - -name: IFS-space-colon-2 -description: - Simple test, IFS=: - At&t ksh fails this, POSIX says the test is correct. -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS="$IFS:" - set -- - showargs :"$@" -expected-stdout: - <:> ---- - -name: IFS-space-colon-3 -description: - Simple test, IFS=: - pdksh fails both of these tests -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS="$IFS:" - x= - set -- - showargs "$x$@" - showargs "$@$x" -expected-fail: yes -expected-stdout: - <> - <> ---- - -name: IFS-space-colon-4 -description: - Simple test, IFS=: -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS="$IFS:" - set -- - showargs "$@$@" -expected-stdout: - ---- - -name: IFS-space-colon-5 -description: - Simple test, IFS=: - Don't know what POSIX thinks of this. at&t ksh does not do this. -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS="$IFS:" - set -- - showargs "${@:-}" -expected-stdout: - <> ---- - -name: IFS-subst-1 -description: - Simple test, IFS=: -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS="$IFS:" - x=":b: :" - echo -n '1:'; for i in $x ; do echo -n " [$i]" ; done ; echo - echo -n '2:'; for i in :b:: ; do echo -n " [$i]" ; done ; echo - showargs 3 $x - showargs 4 :b:: - x="a:b:" - echo -n '5:'; for i in $x ; do echo -n " [$i]" ; done ; echo - showargs 6 $x - x="a::c" - echo -n '7:'; for i in $x ; do echo -n " [$i]" ; done ; echo - showargs 8 $x - echo -n '9:'; for i in ${FOO-`echo -n h:i`th:ere} ; do echo -n " [$i]" ; done ; echo - showargs 10 ${FOO-`echo -n h:i`th:ere} - showargs 11 "${FOO-`echo -n h:i`th:ere}" -expected-stdout: - 1: [] [b] [] - 2: [:b::] - <3> <> <> - <4> <:b::> - 5: [a] [b] - <6> - 7: [a] [] [c] - <8> <> - 9: [h] [ith] [ere] - <10> - <11> ---- - -name: IFS-subst-2 -description: - manual page test, IFS=: -stdin: - showargs() { for i; do echo -n " <$i>"; done; echo; } - IFS=" :" - x=" A : B::D" - echo -n '1:'; for i in $x ; do echo -n " [$i]" ; done ; echo - showargs 2 $x -expected-stdout: - 1: [A] [B] [] [D] - <2> <> ---- diff --git a/tests/integer.t b/tests/integer.t deleted file mode 100644 index c69053d..0000000 --- a/tests/integer.t +++ /dev/null @@ -1,217 +0,0 @@ -name: integer-base-err-1 -description: - Can't have 0 base (causes shell to exit) -expected-exit: e != 0 -stdin: - typeset -i i - i=3 - i=0#4 - echo $i -expected-stderr-pattern: - /^.*:.*0#4.*\n$/ ---- - -name: integer-base-err-2 -description: - Can't have multiple bases in a 'constant' (causes shell to exit) - (ksh88 fails this test) -expected-exit: e != 0 -stdin: - typeset -i i - i=3 - i=2#110#11 - echo $i -expected-stderr-pattern: - /^.*:.*2#110#11.*\n$/ ---- - -name: integer-base-err-3 -description: - Syntax errors in expressions and effects on bases - (interactive so errors don't cause exits) - (ksh88 fails this test - shell exits, even with -i) -arguments: !-i! -stdin: - PS1= # minimize prompt hassles - typeset -i4 a=10 - typeset -i a=2+ - echo $a - typeset -i4 a=10 - typeset -i2 a=2+ - echo $a -expected-stderr-pattern: - /^([#\$] )?.*:.*2+.*\n.*:.*2+.*\n$/ -expected-stdout: - 4#22 - 4#22 ---- - -name: integer-base-err-4 -description: - Are invalid digits (according to base) errors? - (ksh93 fails this test) -expected-exit: e != 0 -stdin: - typeset -i i; - i=3#4 -expected-stderr-pattern: - /^([#\$] )?.*:.*3#4.*\n$/ ---- - - -name: integer-base-1 -description: - Missing number after base is treated as 0. -stdin: - typeset -i i - i=3 - i=2# - echo $i -expected-stdout: - 0 ---- - -name: integer-base-2 -description: - Check 'stickyness' of base in various situations -stdin: - typeset -i i=8 - echo $i - echo ---------- A - typeset -i4 j=8 - echo $j - echo ---------- B - typeset -i k=8 - typeset -i4 k=8 - echo $k - echo ---------- C - typeset -i4 l - l=3#10 - echo $l - echo ---------- D - typeset -i m - m=3#10 - echo $m - echo ---------- E - n=2#11 - typeset -i n - echo $n - n=10 - echo $n - echo ---------- F - typeset -i8 o=12 - typeset -i4 o - echo $o - echo ---------- G - typeset -i p - let p=8#12 - echo $p -expected-stdout: - 8 - ---------- A - 4#20 - ---------- B - 4#20 - ---------- C - 4#3 - ---------- D - 3#10 - ---------- E - 2#11 - 2#1010 - ---------- F - 4#30 - ---------- G - 8#12 ---- - -name: integer-base-3 -description: - More base parsing (hmm doesn't test much..) -stdin: - typeset -i aa - aa=1+12#10+2 - echo $aa - typeset -i bb - bb=1+$aa - echo $bb - typeset -i bb - bb=$aa - echo $bb - typeset -i cc - cc=$aa - echo $cc -expected-stdout: - 15 - 16 - 15 - 15 ---- - -name: integer-base-4 -description: - Check that things not declared as integers are not made integers, - also, check if base is not reset by -i with no arguments. - (ksh93 fails - prints 10#20 - go figure) -stdin: - xx=20 - let xx=10 - typeset -i | grep '^xx=' - typeset -i4 a=10 - typeset -i a=20 - echo $a -expected-stdout: - 4#110 ---- - -name: integer-base-5 -description: - More base stuff -stdin: - typeset -i4 a=3#10 - echo $a - echo -- - typeset -i j=3 - j=~3 - echo $j - echo -- - typeset -i k=1 - x[k=k+1]=3 - echo $k - echo -- - typeset -i l - for l in 1 2+3 4; do echo $l; done -expected-stdout: - 4#3 - -- - -4 - -- - 2 - -- - 1 - 5 - 4 ---- - -name: integer-base-6 -description: - Even more base stuff - (ksh93 fails this test - prints 0) -stdin: - typeset -i7 i - i= - echo $i -expected-stdout: - 7#0 ---- - -name: integer-base-7 -description: - Check that non-integer parameters don't get bases assigned -stdin: - echo $(( zz = 8#100 )) - echo $zz -expected-stdout: - 64 - 64 ---- diff --git a/tests/lineno.t b/tests/lineno.t deleted file mode 100644 index 5ce16a1..0000000 --- a/tests/lineno.t +++ /dev/null @@ -1,110 +0,0 @@ -name: lineno-stdin -description: - See if $LINENO is updated and can be modified. -stdin: - echo A $LINENO - echo B $LINENO - LINENO=20 - echo C $LINENO -expected-stdout: - A 1 - B 2 - C 20 ---- - -name: lineno-inc -description: - See if $LINENO is set for .'d files. -file-setup: file 644 "dotfile" - echo dot A $LINENO - echo dot B $LINENO - LINENO=20 - echo dot C $LINENO -stdin: - echo A $LINENO - echo B $LINENO - . ./dotfile -expected-stdout: - A 1 - B 2 - dot A 1 - dot B 2 - dot C 20 ---- - - -name: lineno-func -description: - See if $LINENO is set for commands in a function. -stdin: - echo A $LINENO - echo B $LINENO - bar() { - echo func A $LINENO - echo func B $LINENO - } - bar - echo C $LINENO -expected-stdout: - A 1 - B 2 - func A 4 - func B 5 - C 8 ---- - -name: lineno-unset -description: - See if unsetting LINENO makes it non-magic. -file-setup: file 644 "dotfile" - echo dot A $LINENO - echo dot B $LINENO -stdin: - unset LINENO - echo A $LINENO - echo B $LINENO - bar() { - echo func A $LINENO - echo func B $LINENO - } - bar - . ./dotfile - echo C $LINENO -expected-stdout: - A - B - func A - func B - dot A - dot B - C ---- - -name: lineno-unset-use -description: - See if unsetting LINENO makes it non-magic even - when it is re-used. -file-setup: file 644 "dotfile" - echo dot A $LINENO - echo dot B $LINENO -stdin: - unset LINENO - LINENO=3 - echo A $LINENO - echo B $LINENO - bar() { - echo func A $LINENO - echo func B $LINENO - } - bar - . ./dotfile - echo C $LINENO -expected-stdout: - A 3 - B 3 - func A 3 - func B 3 - dot A 3 - dot B 3 - C 3 ---- diff --git a/tests/read.t b/tests/read.t deleted file mode 100644 index 0a73f10..0000000 --- a/tests/read.t +++ /dev/null @@ -1,57 +0,0 @@ -# $MirOS$ -# $OpenBSD: read.t,v 1.3 2003/03/10 03:48:16 david Exp $ -# -# To test: -# POSIX: -# - if no -r, \ is escape character -# - \newline disappear -# - \ -> don't break here -# - \ -> -# - if -r, backslash is not special -# - if stdin is tty and shell interactive -# - prompt for continuation if \newline (prompt to stderr) -# - a here-document isn't terminated after newline ???? -# - remaining vars set to empty string (not null) -# - check field splitting -# - left over fields and their separators assigned to last var -# - exit status is normally 0 -# - exit status is > 0 on eof -# - exit status > 0 on error -# - signals interrupt reads -# extra: -# - can't change read-only variables -# - error if var name bogus -# - set -o allexport effects read -# ksh: -# x check default variable: REPLY -# - check -p, -s, -u options -# - check var?prompt stuff -# - "echo a b | read x y" sets x,y in parent shell (at&t) -# -name: read-IFS-1 -description: - Simple test, default IFS -stdin: - echo "A B " > IN - unset x y z - read x y z < IN - echo 1: "x[$x] y[$y] z[$z]" - echo 1a: ${z-z not set} - read x < IN - echo 2: "x[$x]" -expected-stdout: - 1: x[A] y[B] z[] - 1a: - 2: x[A B] ---- - -name: read-ksh-1 -description: - If no var specified, REPLY is used -stdin: - echo "abc" > IN - read < IN - echo "[$REPLY]"; -expected-stdout: - [abc] ---- diff --git a/tests/regress.t b/tests/regress.t deleted file mode 100644 index 34106b5..0000000 --- a/tests/regress.t +++ /dev/null @@ -1,1091 +0,0 @@ -# $MirOS$ -# $OpenBSD: regress.t,v 1.12 2003/11/08 19:17:27 jmc Exp $ -# -# The first 39 of these tests are from the old Bugs script. - -name: regression-1 -description: - Lex array code had problems with this. -stdin: - echo foo[ - n=bar - echo "hi[ $n ]=1" -expected-stdout: - foo[ - hi[ bar ]=1 ---- - - -name: regression-2 -description: - When PATH is set before running a command, the new path is - not used in doing the path search - $ echo echo hi > /tmp/q ; chmod a+rx /tmp/q - $ PATH=/tmp q - q: not found - $ - in comexec() the two lines - while (*vp != NULL) - (void) typeset(*vp++, xxx, 0); - need to be moved out of the switch to before findcom() is - called - I don't know what this will break. -stdin: - : ${PWD:-`pwd 2> /dev/null`} - : ${PWD:?"PWD not set - can't do test"} - mkdir Y - cat > Y/xxxscript << EOF - #!/bin/sh - # Need to restore path so echo can be found (some shells don't have - # it as a built-in) - PATH=\$OLDPATH - echo hi - exit 0 - EOF - chmod a+rx Y/xxxscript - export OLDPATH="$PATH" - PATH=$PWD/Y xxxscript - exit $? -expected-stdout: - hi ---- - - -# -# 3. Sun OS 4.0.x (This seems to be a problem with sun's PENDIN not being done -# properly) -# sleep 5^J ls^J ls^J ls [only first ls runs] -# vi ... ZZ (while waiting type) [some of the input gets eaten] -# [not present in SunOS 4.1.x] -#echo " [No automatic test for bug 3 - interactive]" - - -# -# 4. (fixed) -# -#echo " [Don't know what bug 4 was]" - - -# -# 5. Everywhere -# File name completion (^X,*) does not mesh well with cd and -# symbolic links. cd does path simplification wrt $PWD before -# doing the actual chdir(), while file name completion does -# not do the simplification. E.g., you are in directory A -# which has a symbolic link to directory B, you create a file -# called foobar and you then cd to the symlink to B, and type -# $ echo ../foo^X -# and the shell beeps at you. Would be more consistent to -# do the completion after simplifing the `$PWD/..'. -#echo " [No automatic test for bug 5 - interactive]" - - -name: regression-6 -description: - Parsing of $(..) expressions is non-optimal. It is - impossible to have any parentheses inside the expression. - I.e., - $ ksh -c 'echo $(echo \( )' - no closing quote - $ ksh -c 'echo $(echo "(" )' - no closing quote - $ - The solution is to hack the parsing clode in lex.c, the - question is how to hack it: should any parentheses be - escaped by a backslash, or should recursive parsing be done - (so quotes could also be used to hide hem). The former is - easier, the later better... -stdin: - echo $(echo \() -expected-stdout: - ( ---- - - -# -# 7. (fixed) -# -#echo " [Don't know what bug 7 was]" - - -# -# 8. Everywhere - NOT A BUG - this is what at&t ksh88 does -# Strange typset -x behaviour in functions. The following function -# does not set the environment variable BLAH outside the function: -# function blah -# { -# typeset -x BLAH=foobar -# } -# This function does work: -# function blah -# { BLAH=foobar; export BLAH -# } -#echo ' [Bug 8 was bogus]' - - -name: regression-9 -description: - Continue in a for loop does not work right: - for i in a b c ; do - if [ $i = b ] ; then - continue - fi - echo $i - done - Prints a forever... -stdin: - first=yes - for i in a b c ; do - if [ $i = b ] ; then - if [ $first = no ] ; then - echo 'continue in for loop broken' - break # hope break isn't broken too :-) - fi - first=no - continue - fi - done - echo bye -expected-stdout: - bye ---- - - -name: regression-10 -description: - The following: - set -- `false` - echo $? - shoud not print 0. (according to /bin/sh, at&t ksh88, and the - getopt(1) man page - not according to POSIX) -stdin: - set -- `false` - echo $? -expected-stdout: - 1 ---- - - -name: regression-11 -description: - The following: - x=/foo/bar/blah - echo ${x##*/} - should echo blah but on some machines echos /foo/bar/blah. -stdin: - x=/foo/bar/blah - echo ${x##*/} -expected-stdout: - blah ---- - - -name: regression-12 -description: - Both of the following echos produce the same output under sh/ksh.att: - #!/bin/sh - x="foo bar" - echo "`echo \"$x\"`" - echo "`echo "$x"`" - pdksh produces different output for the former (foo instead of foo\tbar) -stdin: - x="foo bar" - echo "`echo \"$x\"`" - echo "`echo "$x"`" -expected-stdout: - foo bar - foo bar ---- - - -name: regression-13 -description: - The following command hangs forever: - $ (: ; cat /etc/termcap) | sleep 2 - This is because the shell forks a shell to run the (..) command - and this shell has the pipe open. When the sleep dies, the cat - doesn't get a SIGPIPE 'cause a process (ie, the second shell) - still has the pipe open. - - NOTE: this test provokes a bizarre bug in ksh93 (shell starts reading - commands from /etc/termcap..) -time-limit: 10 -stdin: - echo A line of text that will be duplicated quite a number of times.> t1 - cat t1 t1 t1 t1 t1 t1 t1 t1 t1 t1 t1 t1 t1 t1 t1 t1 > t2 - cat t2 t2 t2 t2 t2 t2 t2 t2 t2 t2 t2 t2 t2 t2 t2 t2 > t1 - cat t1 t1 t1 t1 > t2 - (: ; cat t2) | sleep 1 ---- - - -name: regression-14 -description: - The command - $ (foobar) 2> /dev/null - generates no output under /bin/sh, but pdksh produces the error - foobar: not found - Also, the command - $ foobar 2> /dev/null - generates an error under /bin/sh and pdksh, but at&t ksh88 produces - no error (redirected to /dev/null). -stdin: - (you/should/not/see/this/error/1) 2> /dev/null - you/should/not/see/this/error/2 2> /dev/null - true ---- - - -name: regression-15 -description: - The command - $ whence foobar - generates a blank line under pdksh and sets the exit status to 0. - at&t ksh88 generates no output and sets the exit status to 1. Also, - the command - $ whence foobar cat - generates no output under at&t ksh88 (pdksh generates a blank line - and /bin/cat). -stdin: - whence does/not/exist > /dev/null - echo 1: $? - echo 2: $(whence does/not/exist | wc -l) - echo 3: $(whence does/not/exist cat | wc -l) -expected-stdout: - 1: 1 - 2: 0 - 3: 0 ---- - - -name: regression-16 -description: - ${var%%expr} seems to be broken in many places. On the mips - the commands - $ read line < /etc/passwd - $ echo $line - root:0:1:... - $ echo ${line%%:*} - root - $ echo $line - root - $ - change the value of line. On sun4s & pas, the echo ${line%%:*} doesn't - work. Haven't checked elsewhere... -script: - read x - y=$x - echo ${x%%:*} - echo $x -stdin: - root:asdjhasdasjhs:0:1:Root:/:/bin/sh -expected-stdout: - root - root:asdjhasdasjhs:0:1:Root:/:/bin/sh ---- - - -name: regression-17 -description: - The command - . /foo/bar - should set the exit status to non-zero (sh and at&t ksh88 do). - XXX doting a non existent file is a fatal error for a script -stdin: - . does/not/exist -expected-exit: e != 0 -expected-stderr-pattern: /.?/ ---- - - -# -# 18. Everywhere -# In vi mode ^X (and *) can dump core: -# $ ab[cd^XMemory fault (core dumped) -#echo " [No automatic test for bug 18 - interactive]" - - -name: regression-19 -description: - Both of the following echos should produce the same thing, but don't: - $ x=foo/bar - $ echo ${x%/*} - foo - $ echo "${x%/*}" - foo/bar -stdin: - x=foo/bar - echo "${x%/*}" -expected-stdout: - foo ---- - - -# -# 20. (same as 18) -# - - -name: regression-21 -description: - backslash does not work as expected in case labels: - $ x='-x' - $ case $x in - -\?) echo hi - esac - hi - $ x='-?' - $ case $x in - -\\?) echo hi - esac - hi - $ -stdin: - case -x in - -\?) echo fail - esac ---- - - -name: regression-22 -description: - Quoting backquotes inside backquotes doesn't work: - $ echo `echo hi \`echo there\` folks` - asks for more info. sh and at&t ksh88 both echo - hi there folks -stdin: - echo `echo hi \`echo there\` folks` -expected-stdout: - hi there folks ---- - - -name: regression-23 -description: - )) is not treated `correctly': - $ (echo hi ; (echo there ; echo folks)) - missing (( - $ - instead of (as sh and ksh.att) - $ (echo hi ; (echo there ; echo folks)) - hi - there - folks - $ -stdin: - ( : ; ( : ; echo hi)) -expected-stdout: - hi ---- - - -# -# 24. strangeness with file name completion involving symlinks to nowhere -# $ mkdir foo foo/bar -# $ ln -s /stuff/junk foo/bar/xx -# $ echo foo/*/xx  -# (beep) -# $ -#echo " [No automatic test for bug 24 - interactive]" - - -name: regression-25 -description: - Check reading stdin in a while loop. The read should only read - a single line, not a whole stdio buffer; the cat should get - the rest. -stdin: - (echo a; echo b) | while read x ; do - echo $x - cat > /dev/null - done -expected-stdout: - a ---- - - -name: regression-26 -description: - Check reading stdin in a while loop. The read should read both - lines, not just the first. -script: - a= - while [ "$a" != xxx ] ; do - last=$x - read x - cat /dev/null | sed 's/x/y/' - a=x$a - done - echo $last -stdin: - a - b -expected-stdout: - b ---- - - -name: regression-27 -description: - The command - . /does/not/exist - should cause a script to exit. -stdin: - . does/not/exist - echo hi -expected-exit: e != 0 -expected-stderr-pattern: /does\/not\/exist/ ---- - - -name: regression-28 -description: - variable assignements not detected well -stdin: - a.x=1 echo hi -expected-exit: e != 0 -expected-stderr-pattern: /a\.x=1/ ---- - - -name: regression-29 -description: - alias expansion different from at&t ksh88 -stdin: - alias a='for ' b='i in' - a b hi ; do echo $i ; done -expected-stdout: - hi ---- - - -name: regression-30 -description: - strange characters allowed inside ${...} -stdin: - echo ${a{b}} -expected-exit: e != 0 -expected-stderr-pattern: /.?/ ---- - - -name: regression-31 -description: - Does read handle partial lines correctly -script: - a= ret= - while [ "$a" != xxx ] ; do - read x y z - ret=$? - a=x$a - done - echo "[$x]" - echo $ret -stdin: ! - a A aA - b B Bb - c -expected-stdout: - [c] - 1 ---- - - -name: regression-32 -description: - Does read set variables to null at eof? -script: - a= - while [ "$a" != xxx ] ; do - read x y z - a=x$a - done - echo 1: ${x-x not set} ${y-y not set} ${z-z not set} - echo 2: ${x:+x not null} ${y:+y not null} ${z:+z not null} -stdin: - a A Aa - b B Bb -expected-stdout: - 1: - 2: ---- - - -name: regression-33 -description: - Does umask print a leading 0 when umask is 3 digits? -stdin: - umask 222 - umask -expected-stdout: - 0222 ---- - - -# -# -# Does umask print a umask of 0 sanely? -# There is lots of variety here (0, 00, 000, and 0000 have all been -# seen in various shells...) -# -#echo ' [Bug 34 was bogus]' - - -name: regression-35 -description: - Tempory files used for here-docs in functions get trashed after - the function is parsed (before it is executed) -stdin: - f1() { - cat <<- EOF - F1 - EOF - f2() { - cat <<- EOF - F2 - EOF - } - } - f1 - f2 - unset -f f1 - f2 -expected-stdout: - F1 - F2 - F2 ---- - - -name: regression-36 -description: - Command substitution breaks reading in while loop - (test from ) -stdin: - (echo abcdef; echo; echo 123) | - while read line - do - # the following line breaks it - c=`echo $line | wc -c` - echo $c - done -expected-stdout: - 7 - 1 - 4 ---- - - -name: regression-37 -description: - Machines with broken times() (reported by ) - time does not report correct real time -stdin: - time sleep 1 -expected-stderr-pattern: !/^\s*0\.0[\s\d]+real|^\s*real[\s]+0+\.0/ ---- - - -name: regression-38 -description: - set -e doesn't ignore exit codes for if/while/until/&&/||/!. -arguments: !-e! -stdin: - if false; then echo hi ; fi - false || true - false && true - while false; do echo hi; done - echo ok -expected-stdout: - ok ---- - - -name: regression-39 -description: - set -e: errors in command substitutions aren't ignored - Not clear if they should be or not... -expected-fail: yes -arguments: !-e! -stdin: - echo `false; echo hi` -expected-stdout: - hi ---- - -name: regression-40 -description: - This used to cause a core dump -env-setup: !RANDOM=12! -stdin: - echo hi -expected-stdout: - hi ---- - -name: regression-41 -description: - foo should be set to bar (should not be empty) -stdin: - foo=` - echo bar` - echo "($foo)" -expected-stdout: - (bar) ---- - -name: regression-42 -description: - Can't use command line assignments to assign readonly parameters. -stdin: - foo=bar - readonly foo - foo=stuff env | grep '^foo' -expected-exit: e != 0 -expected-stderr-pattern: - /.*read *only.*/ ---- - -name: regression-43 -description: - Can subshells be prefixed by redirections (historical shells allow - this) -stdin: - < /dev/null (sed 's/^/X/') ---- - -name: regression-44 -description: - getopts sets OPTIND correctly for unparsed option -stdin: - set -- -a -a -x - while getopts :a optc; do - echo "OPTARG=$OPTARG, OPTIND=$OPTIND, optc=$optc." - done - echo done -expected-stdout: - OPTARG=, OPTIND=2, optc=a. - OPTARG=, OPTIND=3, optc=a. - OPTARG=x, OPTIND=3, optc=?. - done ---- - -name: regression-45 -description: - Parameter assignments with [] recognized correctly -stdin: - FOO=*[12] - BAR=abc[ - MORE=[abc] - JUNK=a[bc - echo "<$FOO>" - echo "<$BAR>" - echo "<$MORE>" - echo "<$JUNK>" -expected-stdout: - <*[12]> - - <[abc]> - ---- - -name: regression-46 -description: - Check that alias expansion works in command substitutions and - at the end of file. -stdin: - alias x='echo hi' - FOO="`x` " - echo "[$FOO]" - x -expected-stdout: - [hi ] - hi ---- - -name: regression-47 -description: - Check that aliases are fully read. -stdin: - alias x='echo hi; - echo there' - x - echo done -expected-stdout: - hi - there - done ---- - -name: regression-48 -description: - Check that (here doc) temp files are not left behind after an exec. -stdin: - mkdir foo || exit 1 - TMPDIR=$PWD/foo $0 <<- 'EOF' - x() { - sed 's/^/X /' << E_O_F - hi - there - folks - E_O_F - echo "done ($?)" - } - echo=echo; [ -x /bin/echo ] && echo=/bin/echo - exec $echo subtest-1 hi - EOF - echo subtest-1 foo/* - TMPDIR=$PWD/foo $0 <<- 'EOF' - echo=echo; [ -x /bin/echo ] && echo=/bin/echo - sed 's/^/X /' << E_O_F; exec $echo subtest-2 hi - a - few - lines - E_O_F - EOF - echo subtest-2 foo/* -expected-stdout: - subtest-1 hi - subtest-1 foo/* - X a - X few - X lines - subtest-2 hi - subtest-2 foo/* ---- - -name: regression-49 -description: - Check that unset params with attributes are reported by set, those - sans attributes are not. -stdin: - unset FOO BAR - echo X$FOO - export BAR - typeset -i BLAH - set | grep FOO - set | grep BAR - set | grep BLAH -expected-stdout: - X - BAR - BLAH ---- - -name: regression-50 -description: - Check that aliases do not use continuation prompt after trailing - semi-colon. -file-setup: file 644 "env" - PS1=Y - PS2=X -env-setup: !ENV=./env! -arguments: !-i! -stdin: - alias foo='echo hi ; ' - foo - foo echo there -expected-stdout: - hi - hi - there -expected-stderr: ! - YYYY ---- - -name: regression-51 -description: - Check that set allows both +o and -o options on same command line. -stdin: - set a b c - set -o noglob +o allexport - echo A: $*, * -expected-stdout: - A: a b c, * ---- - -name: regression-52 -description: - Check that globing works in pipelined commands -file-setup: file 644 "env" - PS1=P -file-setup: file 644 "abc" - stuff -env-setup: !ENV=./env! -arguments: !-i! -stdin: - sed 's/^/X /' < ab* - echo mark 1 - sed 's/^/X /' < ab* | sed 's/^/Y /' - echo mark 2 -expected-stdout: - X stuff - mark 1 - Y X stuff - mark 2 -expected-stderr: ! - PPPPP ---- - -name: regression-53 -description: - Check that getopts works in functions -stdin: - #!/bin/ksh - - bfunc() { - echo bfunc: enter "(args: $*; OPTIND=$OPTIND)" - while getopts B oc; do - case $oc in - (B) - echo bfunc: B option - ;; - (*) - echo bfunc: odd option "($oc)" - ;; - esac - done - echo bfunc: leave - } - - function kfunc { - echo kfunc: enter "(args: $*; OPTIND=$OPTIND)" - while getopts K oc; do - case $oc in - (K) - echo kfunc: K option - ;; - (*) - echo bfunc: odd option "($oc)" - ;; - esac - done - echo kfunc: leave - } - - set -- -f -b -k -l - echo "line 1: OPTIND=$OPTIND" - getopts kbfl optc - echo "line 2: ret=$?, optc=$optc, OPTIND=$OPTIND" - bfunc -BBB blah - echo "line 3: OPTIND=$OPTIND" - getopts kbfl optc - echo "line 4: ret=$?, optc=$optc, OPTIND=$OPTIND" - kfunc -KKK blah - echo "line 5: OPTIND=$OPTIND" - getopts kbfl optc - echo "line 6: ret=$?, optc=$optc, OPTIND=$OPTIND" - echo - - OPTIND=1 - set -- -fbkl - echo "line 10: OPTIND=$OPTIND" - getopts kbfl optc - echo "line 20: ret=$?, optc=$optc, OPTIND=$OPTIND" - bfunc -BBB blah - echo "line 30: OPTIND=$OPTIND" - getopts kbfl optc - echo "line 40: ret=$?, optc=$optc, OPTIND=$OPTIND" - kfunc -KKK blah - echo "line 50: OPTIND=$OPTIND" - getopts kbfl optc - echo "line 60: ret=$?, optc=$optc, OPTIND=$OPTIND" -expected-stdout: - line 1: OPTIND=1 - line 2: ret=0, optc=f, OPTIND=2 - bfunc: enter (args: -BBB blah; OPTIND=2) - bfunc: B option - bfunc: B option - bfunc: leave - line 3: OPTIND=2 - line 4: ret=0, optc=b, OPTIND=3 - kfunc: enter (args: -KKK blah; OPTIND=1) - kfunc: K option - kfunc: K option - kfunc: K option - kfunc: leave - line 5: OPTIND=3 - line 6: ret=0, optc=k, OPTIND=4 - - line 10: OPTIND=1 - line 20: ret=0, optc=f, OPTIND=2 - bfunc: enter (args: -BBB blah; OPTIND=2) - bfunc: B option - bfunc: B option - bfunc: leave - line 30: OPTIND=2 - line 40: ret=1, optc=?, OPTIND=2 - kfunc: enter (args: -KKK blah; OPTIND=1) - kfunc: K option - kfunc: K option - kfunc: K option - kfunc: leave - line 50: OPTIND=2 - line 60: ret=1, optc=?, OPTIND=2 ---- - - -name: regression-54 -description: - Check that ; is not required before the then in if (( ... )) then ... -stdin: - if (( 1 )) then - echo ok dparen - fi - if [[ -n 1 ]] then - echo ok dbrackets - fi -expected-stdout: - ok dparen - ok dbrackets ---- - - -name: regression-55 -description: - Check ${foo:%bar} is allowed (ksh88 allows it...) -stdin: - x=fooXbarXblah - echo 1 ${x%X*} - echo 2 ${x:%X*} - echo 3 ${x%%X*} - echo 4 ${x:%%X*} - echo 5 ${x#*X} - echo 6 ${x:#*X} - echo 7 ${x##*X} - echo 8 ${x:##*X} -expected-stdout: - 1 fooXbar - 2 fooXbar - 3 foo - 4 foo - 5 barXblah - 6 barXblah - 7 blah - 8 blah ---- - - -name: regression-56 -description: - Check eval vs substitution exit codes - (this is what ksh88 does) -stdin: - eval $(false) - echo A $? - eval ' $(false)' - echo B $? - eval " $(false)" - echo C $? - eval "eval $(false)" - echo D $? - eval 'eval '"$(false)" - echo E $? - IFS="$IFS:" - eval $(echo :; false) - echo F $? -expected-stdout: - A 1 - B 1 - C 1 - D 0 - E 0 - F 1 ---- - -name: regression-57 -description: - Check if typeset output is correct for - uninitialized array elements. -stdin: - typeset -i xxx[4] - echo A - typeset -i | grep xxx | sed 's/^/ /' - echo B - typeset | grep xxx | sed 's/^/ /' - - xxx[1]=2+5 - echo M - typeset -i | grep xxx | sed 's/^/ /' - echo N - typeset | grep xxx | sed 's/^/ /' -expected-stdout: - A - xxx - B - typeset -i xxx - M - xxx[1]=7 - N - typeset -i xxx ---- - -name: regression-58 -description: - Check if trap exit is ok (exit not mistaken for signal name) -stdin: - trap 'echo hi' exit - trap exit 1 -expected-stdout: - hi ---- - -name: regression-59 -description: - Check if ${#array[*]} is calculated correctly. -stdin: - a[12]=hi - a[8]=there - echo ${#a[*]} -expected-stdout: - 2 ---- - -name: regression-60 -description: - Check if default exit status is previous command -stdin: - (true; exit) - echo A $? - (false; exit) - echo B $? - ( (exit 103) ; exit) - echo C $? -expected-stdout: - A 0 - B 1 - C 103 ---- - -name: regression-61 -description: - Check if EXIT trap is executed for sub shells. -stdin: - trap 'echo parent exit' EXIT - echo start - (echo A; echo A last) - echo B - (echo C; trap 'echo sub exit' EXIT; echo C last) - echo parent last -expected-stdout: - start - A - A last - B - C - C last - sub exit - parent last - parent exit ---- - -name: regression-62 -description: - Check if test -nt/-ot succeeds if second(first) file is missing. -stdin: - touch a - test a -nt b && echo nt OK || echo nt BAD - test b -ot a && echo ot OK || echo ot BAD -expected-stdout: - nt OK - ot OK ---- diff --git a/tests/syntax.t b/tests/syntax.t deleted file mode 100644 index 3f3853f..0000000 --- a/tests/syntax.t +++ /dev/null @@ -1,9 +0,0 @@ -name: syntax-1 -description: - Check that lone ampersand is a syntax error -stdin: - & -expected-exit: e != 0 -expected-stderr-pattern: - /syntax error/ ---- diff --git a/tests/th b/tests/th deleted file mode 100644 index f541b2b..0000000 --- a/tests/th +++ /dev/null @@ -1,1205 +0,0 @@ -#!/usr/bin/perl -# $MirOS$ -# $OpenBSD: th,v 1.10 2003/09/01 05:16:46 fgsch Exp $ -# -# Test harness for pdksh tests. -# -# Example test: -# name: a-test -# description: -# a test to show how tests are done -# arguments: !-x!-f! -# stdin: -# echo -n * -# false -# expected-stdout: ! -# * -# expected-stderr: -# + echo -n * -# + false -# expected-exit: 1 -# --- -# This runs the test-program (eg, pdksh) with the arguments -x and -f, -# standard input is a file containing "echo hi*\nfalse\n". The program -# is expected to produce "hi*" (no trailing newline) on standard output, -# "+ echo hi*\n+false\n" on standard error, and an exit code of 1. -# -# -# Format of test files: -# - blank lines and lines starting with # are ignored -# - a test file contains a series of tests -# - a test is a series of tag:value pairs ended with a "---" line -# (leading/trailing spaces are stripped from the first line of value) -# - test tags are: -# Tag Flag Description -# ----- ---- ----------- -# name r The name of the test; should be unique -# description m What test does -# arguments M Arguments to pass to the program; -# default is no arguments. -# script m Value is written to a file which -# is passed as an argument to the program -# (after the arguments arguments) -# stdin m Value is written to a file which is -# used as standard-input for the program; -# default is to use /dev/null. -# perl-setup m Value is a perl script which is executed -# just before the test is run. Try to -# avoid using this... -# perl-cleanup m Value is a perl script which is executed -# just after the test is run. Try to -# avoid using this... -# env-setup M Value is a list of NAME=VALUE elements -# which are put in the environment before -# the test is run. If the =VALUE is -# missing, NAME is removed from the -# environment. Programs are run with -# the following minimal environment: -# USER, LOGNAME, HOME, PATH, SHELL -# (values taken from the environment of -# the test harness). -# file-setup mps Used to create files, directories -# and symlinks. First word is either -# file, dir or symlink; second word is -# permissions; this is followed by a -# quoted word that is the name of the -# file; the end-quote should be followed -# by a newline, then the file data -# (if any). The first word may be -# preceeded by a ! to strip the trailing -# newline in a symlink. -# file-result mps Used to verify a file, symlink or -# directory is created correctly. -# The first word is either -# file, dir or symlink; second word is -# expected permissions; third word -# is user-id; fourth is group-id; -# fifth is "exact" or "pattern" -# indicating whether the file contents -# which follow is to be matched exactly -# or if it is a regular expression. -# The fifth argument is the quoted name -# of the file that should be created. -# The end-quote should be followed -# by a newline, then the file data -# (if any). The first word may be -# preceeded by a ! to strip the trailing -# newline in the file contents. -# The permissions, user and group fields -# may be * meaning accept any value. -# time-limit Time limit - the program is sent a -# SIGKILL N seconds. Default is no -# limit. -# expected-fail 'yes' if the test is expected to fail. -# expected-exit expected exit code. Can be a number, -# or a C expression using the variables -# e, s and w (exit code, termination -# signal, and status code). -# expected-stdout m What the test should generate on stdout; -# default is to expect no output. -# expected-stdout-pattern m A perl pattern which matches the -# expected output. -# expected-stderr m What the test should generate on stderr; -# default is to expect no output. -# expected-stderr-pattern m A perl pattern which matches the -# expected standard error. -# category m Specify a comma separated list of -# 'categories' of program that the test -# is to be run for. A category can be -# negated by prefixing the name with a !. -# The idea is that some tests in a -# test suite may apply to a particular -# program version and shouldn't be run -# on other versions. The category(s) of -# the program being tested can be -# specified on the command line. -# One category os:XXX is predefined -# (XXX is the operating system name, -# eg, linux, dec_osf). -# Flag meanings: -# r tag is required (eg, a test must have a name tag). -# m value can be multiple lines. Lines must be prefixed with -# a tab. If the value part of the initial tag:value line is -# - empty: the initial blank line is stripped. -# - a lone !: the last newline in the value is stripped; -# M value can be multiple lines (prefixed by a tab) and consists -# of multiple fields, delimited by a field separator character. -# The value must start and end with the f-s-c. -# p tag takes parameters (used with m). -# s tag can be used several times. -# - -$os = defined $^O ? $^O : 'unknown'; - -require 'signal.ph' unless $os eq 'os2'; -require 'errno.ph' unless $os eq 'os2'; -require 'getopts.pl'; - -($prog = $0) =~ s#.*/##; - -$Usage = < 0): $opt_t\n" - if $opt_t !~ /^\d+$/ || $opt_t <= 0; - $default_time_limit = $opt_t; -} -$program_kludge = defined $opt_P ? $opt_P : 0; - -if (defined $opt_C) { - foreach $c (split(',', $opt_C)) { - $c =~ s/\s+//; - die "$prog: categories can't be negated on the command line\n" - if ($c =~ /^!/); - $categories{$c} = 1; - } -} - -# Note which tests are to be run. -%do_test = (); -grep($do_test{$_} = 1, @ARGV); -$all_tests = @ARGV == 0; - -# Set up a very minimal environment -%new_env = (); -foreach $env (('USER', 'LOGNAME', 'HOME', 'PATH', 'SHELL')) { - $new_env{$env} = $ENV{$env} if defined $ENV{$env}; -} -if (defined $opt_e) { - # XXX need a way to allow many -e arguments... - if ($opt_e =~ /^([a-zA-Z_]\w*)(|=(.*))$/) { - $new_env{$1} = $2 eq '' ? $ENV{$1} : $3; - } else { - die "$0: bad -e argument: $opt_e\n"; - } -} -%old_env = %ENV; - -# The following doesn't work with perl5... Need to do it explicitly - yuck. -#%ENV = %new_env; -foreach $k (keys(%ENV)) { - delete $ENV{$k}; -} -$ENV{$k} = $v while ($k,$v) = each %new_env; - -die "$prog: couldn't make directory $tempdir - $!\n" if !mkdir($tempdir, 0777); - -chop($pwd = `pwd 2> /dev/null`); -die "$prog: couldn't get current working directory\n" if $pwd eq ''; -die "$prog: couldn't cd to $pwd - $!\n" if !chdir($pwd); - -if (!$program_kludge) { - $test_prog = "$pwd/$test_prog" if substr($test_prog, 0, 1) ne '/'; - die "$prog: $test_prog is not executable - bye\n" - if (! -x $test_prog && $os ne 'os2'); -} - -@trap_sigs = ('TERM', 'QUIT', 'INT', 'PIPE', 'HUP'); -@SIG{@trap_sigs} = ('cleanup_exit') x @trap_sigs; -$child_kill_ok = 0; -$SIG{'ALRM'} = 'catch_sigalrm'; - -$| = 1; - -if (-d $test_set) { - $file_prefix_skip = length($test_set) + 1; - $ret = &process_test_dir($test_set); -} else { - $file_prefix_skip = 0; - $ret = &process_test_file($test_set); -} -&cleanup_exit() if !defined $ret; - -$tot_failed = $nfailed + $nxfailed; -$tot_passed = $npassed + $nxpassed; -if ($tot_failed || $tot_passed) { - print "Total failed: $tot_failed"; - print " ($nxfailed unexpected)" if $nxfailed; - print " (as expected)" if $nfailed && !$nxfailed; - print "\nTotal passed: $tot_passed"; - print " ($nxpassed unexpected)" if $nxpassed; - print "\n"; -} - -&cleanup_exit('ok'); - -sub -cleanup_exit -{ - local($sig, $exitcode) = ('', 1); - - if ($_[0] eq 'ok') { - $exitcode = 0; - } elsif ($_[0] ne '') { - $sig = $_[0]; - } - - unlink($tempi, $tempo, $tempe, $temps); - &scrub_dir($tempdir) if defined $tempdir; - rmdir($tempdir) if defined $tempdir; - - if ($sig) { - $SIG{$sig} = 'DEFAULT'; - kill $sig, $$; - return; - } - exit $exitcode; -} - -sub -catch_sigalrm -{ - $SIG{'ALRM'} = 'catch_sigalrm'; - kill(9, $child_pid) if $child_kill_ok; - $child_killed = 1; -} - -sub -process_test_dir -{ - local($dir) = @_; - local($ret, $file); - local(@todo) = (); - - if (!opendir(DIR, $dir)) { - print STDERR "$prog: can't open directory $dir - $!\n"; - return undef; - } - while (defined ($file = readdir(DIR))) { - push(@todo, $file) if $file =~ /^[^.].*\.t$/; - } - closedir(DIR); - - foreach $file (@todo) { - $file = "$dir/$file"; - if (-d $file) { - $ret = &process_test_dir($file); - } elsif (-f _) { - $ret = &process_test_file($file); - } - last if !defined $ret; - } - - return $ret; -} - -sub -process_test_file -{ - local($file) = @_; - local($ret); - - if (!open(IN, $file)) { - print STDERR "$prog: can't open $file - $!\n"; - return undef; - } - while (1) { - $ret = &read_test($file, IN, *test); - last if !defined $ret || !$ret; - next if !$all_tests && !$do_test{$test{'name'}}; - next if !&category_check(*test); - $ret = &run_test(*test); - last if !defined $ret; - } - close(IN); - - return $ret; -} - -sub -run_test -{ - local(*test) = @_; - local($name) = $test{':full-name'}; - - #print "Running test $name...\n" if $verbose; - - if (defined $test{'stdin'}) { - return undef if !&write_file($tempi, $test{'stdin'}); - $ifile = $tempi; - } else { - $ifile = '/dev/null'; - } - - if (defined $test{'script'}) { - return undef if !&write_file($temps, $test{'script'}); - } - - return undef if !&scrub_dir($tempdir); - - if (!chdir($tempdir)) { - print STDERR "$prog: couldn't cd to $tempdir - $!\n"; - return undef; - } - - if (defined $test{'file-setup'}) { - local($i); - local($type, $perm, $rest, $c, $len, $name); - - for ($i = 0; $i < $test{'file-setup'}; $i++) { - $val = $test{"file-setup:$i"}; - # - # format is: type perm "name" - # - ($type, $perm, $rest) = - split(' ', $val, 3); - $c = substr($rest, 0, 1); - $len = index($rest, $c, 1) - 1; - $name = substr($rest, 1, $len); - $rest = substr($rest, 2 + $len); - $perm = oct($perm) if $perm =~ /^\d+$/; - if ($type eq 'file') { - return undef if !&write_file($name, $rest); - if (!chmod($perm, $name)) { - print STDERR - "$prog:$test{':long-name'}: can't chmod $perm $name - $!\n"; - return undef; - } - } elsif ($type eq 'dir') { - if (!mkdir($name, $perm)) { - print STDERR - "$prog:$test{':long-name'}: can't mkdir $perm $name - $!\n"; - return undef; - } - } elsif ($type eq 'symlink') { - local($oumask) = umask($perm); - local($ret) = symlink($rest, $name); - umask($oumask); - if (!$ret) { - print STDERR - "$prog:$test{':long-name'}: couldn't create symlink $name - $!\n"; - return undef; - } - } - } - } - - if (defined $test{'perl-setup'}) { - eval $test{'perl-setup'}; - if ($@ ne '') { - print STDERR "$prog:$test{':long-name'}: error running perl-setup - $@\n"; - return undef; - } - } - - $pid = fork; - if (!defined $pid) { - print STDERR "$prog: can't fork - $!\n"; - return undef; - } - if (!$pid) { - @SIG{@trap_sigs} = ('DEFAULT') x @trap_sigs; - $SIG{'ALRM'} = 'DEFAULT'; - if (defined $test{'env-setup'}) { - local($var, $val, $i); - - foreach $var (split(substr($test{'env-setup'}, 0, 1), - $test{'env-setup'})) - { - $i = index($var, '='); - next if $i == 0 || $var eq ''; - if ($i < 0) { - delete $ENV{$var}; - } else { - $ENV{substr($var, 0, $i)} = substr($var, $i + 1); - } - } - } - if (!open(STDIN, "< $ifile")) { - print STDERR "$prog: couldn't open $ifile in child - $!\n"; - kill('TERM', $$); - } - if (!open(STDOUT, "> $tempo")) { - print STDERR "$prog: couldn't open $tempo in child - $!\n"; - kill('TERM', $$); - } - if (!open(STDERR, "> $tempe")) { - print STDOUT "$prog: couldn't open $tempe in child - $!\n"; - kill('TERM', $$); - } - if ($program_kludge) { - @argv = split(' ', $test_prog); - } else { - @argv = ($test_prog); - } - if (defined $test{'arguments'}) { - push(@argv, - split(substr($test{'arguments'}, 0, 1), - substr($test{'arguments'}, 1))); - } - push(@argv, $temps) if defined $test{'script'}; - exec(@argv); - print STDERR "$prog: couldn't execute $test_prog - $!\n"; - kill('TERM', $$); - exit(95); - } - $child_pid = $pid; - $child_killed = 0; - $child_kill_ok = 1; - alarm($test{'time-limit'}) if defined $test{'time-limit'}; - while (1) { - $xpid = waitpid($pid, 0); - $child_kill_ok = 0; - if ($xpid < 0) { - next if $! == &EINTR; - print STDERR "$prog: error waiting for child - $!\n"; - return undef; - } - last; - } - $status = $?; - alarm(0) if defined $test{'time-limit'}; - - $failed = 0; - $why = ''; - - if ($child_killed) { - $failed = 1; - $why .= "\ttest timed out (limit of $test{'time-limit'} seconds)\n"; - } - - $ret = &eval_exit($test{'long-name'}, $status, $test{'expected-exit'}); - return undef if !defined $ret; - if (!$ret) { - local($expl); - - $failed = 1; - if (($status & 0xff) == 0x7f) { - $expl = "stopped"; - } elsif (($status & 0xff)) { - $expl = "signal " . ($status & 0x7f); - } else { - $expl = "exit-code " . (($status >> 8) & 0xff); - } - $why .= - "\tunexpected exit status $status ($expl), expected $test{'expected-exit'}\n"; - } - - $tmp = &check_output($test{'long-name'}, $tempo, 'stdout', - $test{'expected-stdout'}, $test{'expected-stdout-pattern'}); - return undef if !defined $tmp; - if ($tmp ne '') { - $failed = 1; - $why .= $tmp; - } - - $tmp = &check_output($test{'long-name'}, $tempe, 'stderr', - $test{'expected-stderr'}, $test{'expected-stderr-pattern'}); - return undef if !defined $tmp; - if ($tmp ne '') { - $failed = 1; - $why .= $tmp; - } - - $tmp = &check_file_result(*test); - return undef if !defined $tmp; - if ($tmp ne '') { - $failed = 1; - $why .= $tmp; - } - - if (defined $test{'perl-cleanup'}) { - eval $test{'perl-cleanup'}; - if ($@ ne '') { - print STDERR "$prog:$test{':long-name'}: error running perl-cleanup - $@\n"; - return undef; - } - } - - if (!chdir($pwd)) { - print STDERR "$prog: couldn't cd to $pwd - $!\n"; - return undef; - } - - if ($failed) { - if (!$test{'expected-fail'}) { - print "FAIL $name\n"; - $nxfailed++; - } else { - print "fail $name (as expected)\n"; - $nfailed++; - } - $why = "\tDescription" - . &wrap_lines($test{'description'}, " (missing)\n") - . $why; - } elsif ($test{'expected-fail'}) { - print "PASS $name (unexpectedly)\n"; - $nxpassed++; - } else { - print "pass $name\n"; - $npassed++; - } - print $why if $verbose; - return 0; -} - -sub -category_check -{ - local(*test) = @_; - local($c); - - return 1 if (!defined $test{'category'}); - local($ok) = 0; - foreach $c (split(',', $test{'category'})) { - $c =~ s/\s+//; - if ($c =~ /^!/) { - $c = $'; - return 0 if (defined $categories{$c}); - } else { - $ok = 1 if (defined $categories{$c}); - } - } - return $ok; -} - -sub -scrub_dir -{ - local($dir) = @_; - local(@todo) = (); - local($file); - - if (!opendir(DIR, $dir)) { - print STDERR "$prog: couldn't open directory $dir - $!\n"; - return undef; - } - while (defined ($file = readdir(DIR))) { - push(@todo, $file) if $file ne '.' && $file ne '..'; - } - closedir(DIR); - foreach $file (@todo) { - $file = "$dir/$file"; - if (-d $file) { - return undef if !&scrub_dir($file); - if (!rmdir($file)) { - print STDERR "$prog: couldn't rmdir $file - $!\n"; - return undef; - } - } else { - if (!unlink($file)) { - print STDERR "$prog: couldn't unlink $file - $!\n"; - return undef; - } - } - } - return 1; -} - -sub -write_file -{ - local($file, $str) = @_; - - if (!open(TEMP, "> $file")) { - print STDERR "$prog: can't open $file - $!\n"; - return undef; - } - print TEMP $str; - if (!close(TEMP)) { - print STDERR "$prog: error writing $file - $!\n"; - return undef; - } - return 1; -} - -sub -check_output -{ - local($name, $file, $what, $expect, $expect_pat) = @_; - local($got) = ''; - local($why) = ''; - local($ret); - - if (!open(TEMP, "< $file")) { - print STDERR "$prog:$name($what): couldn't open $file after running program - $!\n"; - return undef; - } - while () { - $got .= $_; - } - close(TEMP); - return compare_output($name, $what, $expect, $expect_pat, $got); -} - -sub -compare_output -{ - local($name, $what, $expect, $expect_pat, $got) = @_; - local($why) = ''; - - if (defined $expect_pat) { - $_ = $got; - $ret = eval "$expect_pat"; - if ($@ ne '') { - print STDERR "$prog:$name($what): error evaluating $what pattern: $expect_pat - $@\n"; - return undef; - } - if (!$ret) { - $why = "\tunexpected $what - wanted pattern"; - $why .= &wrap_lines($expect_pat); - $why .= "\tgot"; - $why .= &wrap_lines($got); - } - } else { - $expect = '' if !defined $expect; - if ($got ne $expect) { - $why .= "\tunexpected $what - " . &first_diff($expect, $got) . "\n"; - $why .= "\twanted"; - $why .= &wrap_lines($expect); - $why .= "\tgot"; - $why .= &wrap_lines($got); - } - } - return $why; -} - -sub -wrap_lines -{ - local($str, $empty) = @_; - local($nonl) = substr($str, -1, 1) ne "\n"; - - return (defined $empty ? $empty : " nothing\n") if $str eq ''; - substr($str, 0, 0) = ":\n"; - $str =~ s/\n/\n\t\t/g; - if ($nonl) { - $str .= "\n\t[incomplete last line]\n"; - } else { - chop($str); - chop($str); - } - return $str; -} - -sub -first_diff -{ - local($exp, $got) = @_; - local($lineno, $char) = (1, 1); - local($i, $exp_len, $got_len); - local($ce, $cg); - - $exp_len = length($exp); - $got_len = length($got); - if ($exp_len != $got_len) { - if ($exp_len < $got_len) { - if (substr($got, 0, $exp_len) eq $exp) { - return "got too much output"; - } - } elsif (substr($exp, 0, $got_len) eq $got) { - return "got too little output"; - } - } - for ($i = 0; $i < $exp_len; $i++) { - $ce = substr($exp, $i, 1); - $cg = substr($got, $i, 1); - last if $ce ne $cg; - $char++; - if ($ce eq "\n") { - $lineno++; - $char = 1; - } - } - return "first difference: line $lineno, char $char (wanted '" - . &format_char($ce) . "', got '" - . &format_char($cg) . "'"; -} - -sub -format_char -{ - local($ch, $s); - - $ch = ord($_[0]); - if ($ch == 10) { - return '\n'; - } elsif ($ch == 13) { - return '\r'; - } elsif ($ch == 8) { - return '\b'; - } elsif ($ch == 9) { - return '\t'; - } elsif ($ch > 127) { - $ch -= 127; - $s = "M-"; - } else { - $s = ''; - } - if ($ch < 32) { - $s .= '^'; - $ch += ord('@'); - } elsif ($ch == 127) { - return $s . "^?"; - } - return $s . sprintf("%c", $ch); -} - -sub -eval_exit -{ - local($name, $status, $expect) = @_; - local($expr); - local($w, $e, $s) = ($status, ($status >> 8) & 0xff, $status & 0x7f); - - $e = -1000 if $status & 0xff; - $s = -1000 if $s == 0x7f; - if (!defined $expect) { - $expr = '$w == 0'; - } elsif ($expect =~ /^(|-)\d+$/) { - $expr = "\$e == $expect"; - } else { - $expr = $expect; - $expr =~ s/\b([wse])\b/\$$1/g; - $expr =~ s/\b(SIG[A-Z0-9]+)\b/&$1/g; - } - $w = eval $expr; - if ($@ ne '') { - print STDERR "$prog:$test{':long-name'}: bad expected-exit expression: $expect ($@)\n"; - return undef; - } - return $w; -} - -sub -read_test -{ - local($file, $in, *test) = @_; - local($field, $val, $flags, $do_chop, $need_redo, $start_lineno); - local(%cnt, $sfield); - - %test = (); - %cnt = (); - while (<$in>) { - next if /^\s*$/; - next if /^ *#/; - last if /^\s*---\s*$/; - $start_lineno = $. if !defined $start_lineno; - if (!/^([-\w]+):\s*(|\S|\S.*\S)\s*$/) { - print STDERR "$prog:$file:$.: unrecognized line\n"; - return undef; - } - ($field, $val) = ($1, $2); - $sfield = $field; - $flags = $test_fields{$field}; - if (!defined $flags) { - print STDERR "$prog:$file:$.: unrecognized field \"$field\"\n"; - return undef; - } - if ($flags =~ /s/) { - local($cnt) = $cnt{$field}++; - $test{$field} = $cnt{$field}; - $cnt = 0 if $cnt eq ''; - $sfield .= ":$cnt"; - } elsif (defined $test{$field}) { - print STDERR "$prog:$file:$.: multiple \"$field\" fields\n"; - return undef; - } - $do_chop = $flags !~ /m/; - $need_redo = 0; - if ($val eq '' || $val eq '!' || $flags =~ /p/) { - if ($flags =~ /[Mm]/) { - if ($flags =~ /p/) { - if ($val =~ /^!/) { - $do_chop = 1; - $val = $'; - } else { - $do_chop = 0; - } - if ($val eq '') { - print STDERR - "$prog:$file:$.: no parameters given for field \"$field\"\n"; - return undef; - } - } else { - if ($val eq '!') { - $do_chop = 1; - } - $val = ''; - } - while (<$in>) { - last if !/^\t/; - $val .= $'; - } - chop $val if $do_chop; - $do_chop = 1; - $need_redo = 1; - # - # Syntax check on fields that can several instances - # (can give useful line numbers this way) - # - if ($field eq 'file-setup') { - local($type, $perm, $rest, $c, $len, $name); - # - # format is: type perm "name" - # - if ($val !~ /^[ \t]*(\S+)[ \t]+(\S+)[ \t]+([^ \t].*)/) { - print STDERR - "$prog:$file:$.: bad paramter line for file-setup field\n"; - return undef; - } - ($type, $perm, $rest) = ($1, $2, $3); - if ($type !~ /^(file|dir|symlink)$/) { - print STDERR - "$prog:$file:$.: bad file type for file-setup: $type\n"; - return undef; - } - if ($perm !~ /^\d+$/) { - print STDERR - "$prog:$file:$.: bad permissions for file-setup: $type\n"; - return undef; - } - $c = substr($rest, 0, 1); - if (($len = index($rest, $c, 1) - 1) <= 0) { - print STDERR - "$prog:$file:$.: missing end quote for file name in file-setup: $rest\n"; - return undef; - } - $name = substr($rest, 1, $len); - if ($name =~ /^\// || $name =~ /(^|\/)\.\.(\/|$)/) { - # Note: this is not a security thing - just a sanity - # check - a test can still use symlinks to get at files - # outside the test directory. - print STDERR -"$prog:$file:$.: file name in file-setup is absolute or contains ..: $name\n"; - return undef; - } - } - if ($field eq 'file-result') { - local($type, $perm, $uid, $gid, $matchType, - $rest, $c, $len, $name); - # - # format is: type perm uid gid matchType "name" - # - if ($val !~ /^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S.*)/) { - print STDERR - "$prog:$file:$.: bad paramter line for file-result field\n"; - return undef; - } - ($type, $perm, $uid, $gid, $matchType, $rest) - = ($1, $2, $3, $4, $5, $6); - if ($type !~ /^(file|dir|symlink)$/) { - print STDERR - "$prog:$file:$.: bad file type for file-result: $type\n"; - return undef; - } - if ($perm !~ /^\d+$/ && $perm ne '*') { - print STDERR - "$prog:$file:$.: bad permissions for file-result: $perm\n"; - return undef; - } - if ($uid !~ /^\d+$/ && $uid ne '*') { - print STDERR - "$prog:$file:$.: bad user-id for file-result: $uid\n"; - return undef; - } - if ($gid !~ /^\d+$/ && $gid ne '*') { - print STDERR - "$prog:$file:$.: bad group-id for file-result: $gid\n"; - return undef; - } - if ($matchType !~ /^(exact|pattern)$/) { - print STDERR - "$prog:$file:$.: bad match type for file-result: $matchType\n"; - return undef; - } - $c = substr($rest, 0, 1); - if (($len = index($rest, $c, 1) - 1) <= 0) { - print STDERR - "$prog:$file:$.: missing end quote for file name in file-result: $rest\n"; - return undef; - } - $name = substr($rest, 1, $len); - if ($name =~ /^\// || $name =~ /(^|\/)\.\.(\/|$)/) { - # Note: this is not a security thing - just a sanity - # check - a test can still use symlinks to get at files - # outside the test directory. - print STDERR -"$prog:$file:$.: file name in file-result is absolute or contains ..: $name\n"; - return undef; - } - } - } elsif ($val eq '') { - print STDERR - "$prog:$file:$.: no value given for field \"$field\"\n"; - return undef; - } - } - $val .= "\n" if !$do_chop; - $test{$sfield} = $val; - redo if $need_redo; - } - if ($_ eq '') { - if (%test) { - print STDERR - "$prog:$file:$start_lineno: end-of-file while reading test\n"; - return undef; - } - return 0; - } - - while (($field, $val) = each %test_fields) { - if ($val =~ /r/ && !defined $test{$field}) { - print STDERR - "$prog:$file:$start_lineno: required field \"$field\" missing\n"; - return undef; - } - } - - $test{':full-name'} = substr($file, $file_prefix_skip) . ":$test{'name'}"; - $test{':long-name'} = "$file:$start_lineno:$test{'name'}"; - - # Syntax check on specific fields - if (defined $test{'expected-fail'}) { - if ($test{'expected-fail'} !~ /^(yes|no)$/) { - print STDERR - "$prog:$test{':long-name'}: bad value for expected-fail field\n"; - return undef; - } - $test{'expected-fail'} = $1 eq 'yes'; - } else { - $test{'expected-fail'} = 0; - } - if (defined $test{'arguments'}) { - local($firstc) = substr($test{'arguments'}, 0, 1); - - if (substr($test{'arguments'}, -1, 1) ne $firstc) { - print STDERR "$prog:$test{':long-name'}: arguments field doesn't start and end with the same character\n"; - return undef; - } - } - if (defined $test{'env-setup'}) { - local($firstc) = substr($test{'env-setup'}, 0, 1); - - if (substr($test{'env-setup'}, -1, 1) ne $firstc) { - print STDERR "$prog:$test{':long-name'}: env-setup field doesn't start and end with the same character\n"; - return undef; - } - } - if (defined $test{'expected-exit'}) { - local($val) = $test{'expected-exit'}; - - if ($val =~ /^(|-)\d+$/) { - if ($val < 0 || $val > 255) { - print STDERR "$prog:$test{':long-name'}: expected-exit value $val not in 0..255\n"; - return undef; - } - } elsif ($val !~ /^([\s<>+-=*%\/&|!()]|\b[wse]\b|\bSIG[A-Z0-9]+\b)+$/) { - print STDERR "$prog:$test{':long-name'}: bad expected-exit expression: $val\n"; - return undef; - } - } else { - $test{'expected-exit'} = 0; - } - if (defined $test{'expected-stdout'} - && defined $test{'expected-stdout-pattern'}) - { - print STDERR "$prog:$test{':long-name'}: can't use both expected-stdout and expected-stdout-pattern\n"; - return undef; - } - if (defined $test{'expected-stderr'} - && defined $test{'expected-stderr-pattern'}) - { - print STDERR "$prog:$test{':long-name'}: can't use both expected-stderr and expected-stderr-pattern\n"; - return undef; - } - if (defined $test{'time-limit'}) { - if ($test{'time-limit'} !~ /^\d+$/ || $test{'time-limit'} == 0) { - print STDERR - "$prog:$test{':long-name'}: bad value for time-limit field\n"; - return undef; - } - } elsif (defined $default_time_limit) { - $test{'time-limit'} = $default_time_limit; - } - - if (defined $known_tests{$test{'name'}}) { - print STDERR "$prog:$test{':long-name'}: warning: duplicate test name ${test{'name'}}\n"; - } - $known_tests{$test{'name'}} = 1; - - return 1; -} - -sub -tty_msg -{ - local($msg) = @_; - - open(TTY, "> /dev/tty") || return 0; - print TTY $msg; - close(TTY); - return 1; -} - -sub -never_called_funcs -{ - return 0; - &tty_msg("hi\n"); - &never_called_funcs(); - &catch_sigalrm(); - $old_env{'foo'} = 'bar'; - $internal_test_fields{'foo'} = 'bar'; -} - -sub -check_file_result -{ - local(*test) = @_; - - return '' if (!defined $test{'file-result'}); - - local($why) = ''; - local($i); - local($type, $perm, $uid, $gid, $rest, $c, $len, $name); - local(@stbuf); - - for ($i = 0; $i < $test{'file-result'}; $i++) { - $val = $test{"file-result:$i"}; - # - # format is: type perm "name" - # - ($type, $perm, $uid, $gid, $matchType, $rest) = - split(' ', $val, 6); - $c = substr($rest, 0, 1); - $len = index($rest, $c, 1) - 1; - $name = substr($rest, 1, $len); - $rest = substr($rest, 2 + $len); - $perm = oct($perm) if $perm =~ /^\d+$/; - - @stbuf = lstat($name); - if (!@stbuf) { - $why .= "\texpected $type \"$name\" not created\n"; - next; - } - if ($perm ne '*' && ($stbuf[2] & 07777) != $perm) { - $why .= "\t$type \"$name\" has unexpected permissions\n"; - $why .= sprintf("\t\texpected 0%o, found 0%o\n", - $perm, $stbuf[2] & 07777); - } - if ($uid ne '*' && $stbuf[4] != $uid) { - $why .= "\t$type \"$name\" has unexpected user-id\n"; - $why .= sprintf("\t\texpected %d, found %d\n", - $uid, $stbuf[4]); - } - if ($gid ne '*' && $stbuf[5] != $gid) { - $why .= "\t$type \"$name\" has unexpected group-id\n"; - $why .= sprintf("\t\texpected %d, found %d\n", - $gid, $stbuf[5]); - } - - if ($type eq 'file') { - if (-l _ || ! -f _) { - $why .= "\t$type \"$name\" is not a regular file\n"; - } else { - local $tmp = &check_output($test{'long-name'}, $name, - "$type contents in \"$name\"", - $matchType eq 'exact' ? $rest : undef - $matchType eq 'pattern' ? $rest : undef); - return undef if (!defined $tmp); - $why .= $tmp; - } - } elsif ($type eq 'dir') { - if ($rest !~ /^\s*$/) { - print STDERR "$prog:$test{':long-name'}: file-result test for directory $name should not have content specified\n"; - return undef; - } - if (-l _ || ! -d _) { - $why .= "\t$type \"$name\" is not a directory\n"; - } - } elsif ($type eq 'symlink') { - if (!-l _) { - $why .= "\t$type \"$name\" is not a symlink\n"; - } else { - local $content = readlink($name); - if (!defined $content) { - print STDERR "$prog:$test{':long-name'}: file-result test for $type $name failed - could not readlink - $!\n"; - return undef; - } - local $tmp = &compare_output($test{'long-name'}, - "$type contents in \"$name\"", - $matchType eq 'exact' ? $rest : undef - $matchType eq 'pattern' ? $rest : undef); - return undef if (!defined $tmp); - $why .= $tmp; - } - } - } - - return $why; -} diff --git a/tests/unclass1.t b/tests/unclass1.t deleted file mode 100644 index 258c206..0000000 --- a/tests/unclass1.t +++ /dev/null @@ -1,99 +0,0 @@ -name: xxx-quoted-newline-1 -description: - Check that \ works inside of ${} -stdin: - abc=2 - echo ${ab\ - c} -expected-stdout: - 2 ---- - -name: xxx-quoted-newline-2 -description: - Check that \ works at the start of a here document -stdin: - cat << EO\ - F - hi - EOF -expected-stdout: - hi ---- - -name: xxx-quoted-newline-3 -description: - Check that \ works at the end of a here document -stdin: - cat << EOF - hi - EO\ - F -expected-stdout: - hi ---- - -name: xxx-multi-assignment-cmd -description: - Check that assignments in a command affect subsequent assignments - in the same command -stdin: - FOO=abc - FOO=123 BAR=$FOO - echo $BAR -expected-stdout: - 123 ---- - -name: xxx-exec-environment-1 -description: - Check to see if exec sets it's environment correctly -stdin: - FOO=bar exec env -expected-stdout-pattern: - /(^|.*\n)FOO=bar\n/ ---- - -name: xxx-exec-environment-2 -description: - Check to make sure exec doesn't change environment if a program - isn't exec-ed -# Under os/2, _emx_sig environment variable changes. -category: !os:os2 -stdin: - env > bar1 - FOO=bar exec; env > bar2 - cmp -s bar1 bar2 ---- - -name: xxx-what-do-you-call-this-1 -stdin: - echo "${foo:-"a"}*" -expected-stdout: - a* ---- - -name: xxx-prefix-strip-1 -stdin: - foo='a cdef' - echo ${foo#a c} -expected-stdout: - def ---- - -name: xxx-prefix-strip-2 -stdin: - set a c - x='a cdef' - echo ${x#$*} -expected-stdout: - def ---- - -name: xxx-variable-syntax-1 -stdin: - echo ${:} -expected-stderr-pattern: - /bad substitution/ -expected-exit: 1 ---- diff --git a/tests/unclass2.t b/tests/unclass2.t deleted file mode 100644 index f893d20..0000000 --- a/tests/unclass2.t +++ /dev/null @@ -1,162 +0,0 @@ -name: xxx-subsitution-eval-order -description: - Check order of evaluation of expressions -stdin: - i=1 x= y= - set -A A abc def GHI j G k - echo ${A[x=(i+=1)]#${A[y=(i+=2)]}} - echo $x $y -expected-stdout: - HI - 2 4 ---- - -name: xxx-set-option-1 -description: - Check option parsing in set -stdin: - set -vsA foo -- A 1 3 2 - echo ${foo[*]} -expected-stderr: - echo ${foo[*]} -expected-stdout: - 1 2 3 A ---- - -name: xxx-exec-1 -description: - Check that exec exits for built-ins -arguments: !-i! -stdin: - exec print hi - echo still herre -expected-stdout: - hi -expected-stderr-pattern: /.*/ ---- - -name: xxx-while-1 -description: - Check the return value of while loops - XXX need to do same for for/select/until loops -stdin: - i=x - while [ $i != xxx ] ; do - i=x$i - if [ $i = xxx ] ; then - false - continue - fi - done - echo loop1=$? - - i=x - while [ $i != xxx ] ; do - i=x$i - if [ $i = xxx ] ; then - false - break - fi - done - echo loop2=$? - - i=x - while [ $i != xxx ] ; do - i=x$i - false - done - echo loop3=$? -expected-stdout: - loop1=0 - loop2=0 - loop3=1 ---- - -name: xxx-status-1 -description: - Check that blank lines don't clear $? -arguments: !-i! -stdin: - (exit 1) - echo $? - (exit 1) - - echo $? - true -expected-stdout: - 1 - 1 -expected-stderr-pattern: /.*/ ---- - -name: xxx-status-2 -description: - Check that $? is preserved in subshells, includes, traps. -stdin: - (exit 1) - - echo blank: $? - - (exit 2) - (echo subshell: $?) - - echo 'echo include: $?' > foo - (exit 3) - . ./foo - - trap 'echo trap: $?' ERR - (exit 4) - echo exit: $? -expected-stdout: - blank: 1 - subshell: 2 - include: 3 - trap: 4 - exit: 4 ---- - -name: xxx-clean-chars-1 -description: - Check MAGIC character is stuffed correctly -stdin: - echo `echo [£` -expected-stdout: - [£ ---- - -name: xxx-param-subst-qmark-1 -description: - Check suppresion of error message with null string. According to - POSIX, it shouldn't print the error as 'word' isn't ommitted. -stdin: - unset foo - x= - echo x${foo?$x} -expected-exit: 1 -expected-fail: yes -expected-stderr-pattern: !/not set/ ---- - -name: xxx-param-_-1 -description: - Check c flag is set. -arguments: !-c!echo "[$-]"! -expected-stdout-pattern: /^\[.*c.*\]$/ ---- - -name: env-prompt -description: - Check that prompt not printed when processing ENV -env-setup: !ENV=./foo! -file-setup: file 644 "foo" - XXX=_ - PS1=X - false && echo hmmm -arguments: !-i! -stdin: - echo hi${XXX}there -expected-stdout: - hi_there -expected-stderr: ! - XX ---- diff --git a/tests/version.t b/tests/version.t deleted file mode 100644 index aa4ddbe..0000000 --- a/tests/version.t +++ /dev/null @@ -1,9 +0,0 @@ -name: version-1 -description: - Check version of shell. -category: pdksh -stdin: - echo $KSH_VERSION -expected-stdout-pattern: - /PD KSH v5\.2\.14 MirOS R20u in (native )?KSH mode( as mksh)?/ ---- diff --git a/trap.c b/trap.c deleted file mode 100644 index dedd65c..0000000 --- a/trap.c +++ /dev/null @@ -1,426 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: trap.c,v 1.19 2004/12/22 17:47:03 millert Exp $ */ - -/* - * signal handling - */ - -/* Kludge to avoid bogus re-declaration of sigtraps[] error on AIX 3.2.5 */ -#define FROM_TRAP_C -#include "sh.h" - -__RCSID("$MirOS$"); - -Trap sigtraps[NSIG + 1]; - -static struct sigaction Sigact_ign, Sigact_trap; - -void -inittraps(void) -{ - int i; - - /* Populate sigtraps based on sys_signame and sys_siglist. */ - for (i = 0; i <= NSIG; i++) { - sigtraps[i].signal = i; - if (i == SIGERR_) { - sigtraps[i].name = "ERR"; - sigtraps[i].mess = "Error handler"; - } else { - sigtraps[i].name = sys_signame[i]; - sigtraps[i].mess = sys_siglist[i]; - } - } - sigtraps[SIGEXIT_].name = "EXIT"; /* our name for signal 0 */ - - sigemptyset(&Sigact_ign.sa_mask); - Sigact_ign.sa_flags = 0; /* interruptible */ - Sigact_ign.sa_handler = SIG_IGN; - Sigact_trap = Sigact_ign; - Sigact_trap.sa_handler = trapsig; - - sigtraps[SIGINT].flags |= TF_DFL_INTR | TF_TTY_INTR; - sigtraps[SIGQUIT].flags |= TF_DFL_INTR | TF_TTY_INTR; - sigtraps[SIGTERM].flags |= TF_DFL_INTR;/* not fatal for interactive */ - sigtraps[SIGHUP].flags |= TF_FATAL; - sigtraps[SIGCHLD].flags |= TF_SHELL_USES; - - /* these are always caught so we can clean up any temporary files. */ - setsig(&sigtraps[SIGINT], trapsig, SS_RESTORE_ORIG); - setsig(&sigtraps[SIGQUIT], trapsig, SS_RESTORE_ORIG); - setsig(&sigtraps[SIGTERM], trapsig, SS_RESTORE_ORIG); - setsig(&sigtraps[SIGHUP], trapsig, SS_RESTORE_ORIG); -} - -static RETSIGTYPE alarm_catcher(int sig); - -void -alarm_init(void) -{ - sigtraps[SIGALRM].flags |= TF_SHELL_USES; - setsig(&sigtraps[SIGALRM], alarm_catcher, - SS_RESTORE_ORIG|SS_FORCE|SS_SHTRAP); -} - -static RETSIGTYPE -alarm_catcher(int sig GCC_FUNC_ATTR(unused)) -{ - int errno_ = errno; - - if (ksh_tmout_state == TMOUT_READING) { - int left = alarm(0); - - if (left == 0) { - ksh_tmout_state = TMOUT_LEAVING; - intrsig = 1; - } else - alarm(left); - } - errno = errno_; - return RETSIGVAL; -} - -Trap * -gettrap(const char *name, int igncase) -{ - int i; - Trap *p; - - if (digit(*name)) { - int n; - - if (getn(name, &n) && 0 <= n && n < NSIG) - return &sigtraps[n]; - return NULL; - } - for (p = sigtraps, i = NSIG+1; --i >= 0; p++) - if (p->name) { - if (igncase) { - if (p->name && (!strcasecmp(p->name, name) || - (strlen(name) > 3 && !strncasecmp("SIG", - p->name, 3) && - !strcasecmp(p->name, name + 3)))) - return p; - } else { - if (p->name && (!strcmp(p->name, name) || - (strlen(name) > 3 && !strncmp("SIG", - p->name, 3) && !strcmp(p->name, name + 3)))) - return p; - } - } - return NULL; -} - -/* - * trap signal handler - */ -RETSIGTYPE -trapsig(int i) -{ - Trap *p = &sigtraps[i]; - int errno_ = errno; - - trap = p->set = 1; - if (p->flags & TF_DFL_INTR) - intrsig = 1; - if ((p->flags & TF_FATAL) && !p->trap) { - fatal_trap = 1; - intrsig = 1; - } - if (p->shtrap) - (*p->shtrap)(i); - errno = errno_; - return RETSIGVAL; -} - -/* called when we want to allow the user to ^C out of something - won't - * work if user has trapped SIGINT. - */ -void -intrcheck(void) -{ - if (intrsig) - runtraps(TF_DFL_INTR|TF_FATAL); -} - -/* called after EINTR to check if a signal with normally causes process - * termination has been received. - */ -int -fatal_trap_check(void) -{ - int i; - Trap *p; - - /* todo: should check if signal is fatal, not the TF_DFL_INTR flag */ - for (p = sigtraps, i = NSIG + 1; --i >= 0; p++) - if (p->set && (p->flags & (TF_DFL_INTR|TF_FATAL))) - /* return value is used as an exit code */ - return 128 + p->signal; - return 0; -} - -/* Returns the signal number of any pending traps: ie, a signal which has - * occurred for which a trap has been set or for which the TF_DFL_INTR flag - * is set. - */ -int -trap_pending(void) -{ - int i; - Trap *p; - - for (p = sigtraps, i = NSIG + 1; --i >= 0; p++) - if (p->set && ((p->trap && p->trap[0]) - || ((p->flags & (TF_DFL_INTR|TF_FATAL)) - && !p->trap))) - return p->signal; - return 0; -} - -/* - * run any pending traps. If intr is set, only run traps that - * can interrupt commands. - */ -void -runtraps(int flag) -{ - int i; - Trap *p; - - if (ksh_tmout_state == TMOUT_LEAVING) { - ksh_tmout_state = TMOUT_EXECUTING; - warningf(false, "timed out waiting for input"); - unwind(LEXIT); - } else - /* XXX: this means the alarm will have no effect if a trap - * is caught after the alarm() was started...not good. - */ - ksh_tmout_state = TMOUT_EXECUTING; - if (!flag) - trap = 0; - if (flag & TF_DFL_INTR) - intrsig = 0; - if (flag & TF_FATAL) - fatal_trap = 0; - for (p = sigtraps, i = NSIG + 1; --i >= 0; p++) - if (p->set && (!flag - || ((p->flags & flag) && p->trap == NULL))) - runtrap(p); -} - -void -runtrap(Trap *p) -{ - int i = p->signal; - char *trapstr = p->trap; - int oexstat; - int UNINITIALIZED(old_changed); - - p->set = 0; - if (trapstr == NULL) { /* SIG_DFL */ - if (p->flags & TF_FATAL) { - /* eg, SIGHUP */ - exstat = 128 + i; - unwind(LLEAVE); - } - if (p->flags & TF_DFL_INTR) { - /* eg, SIGINT, SIGQUIT, SIGTERM, etc. */ - exstat = 128 + i; - unwind(LINTR); - } - return; - } - if (trapstr[0] == '\0') /* SIG_IGN */ - return; - if (i == SIGEXIT_ || i == SIGERR_) { /* avoid recursion on these */ - old_changed = p->flags & TF_CHANGED; - p->flags &= ~TF_CHANGED; - p->trap = NULL; - } - oexstat = exstat; - /* Note: trapstr is fully parsed before anything is executed, thus - * no problem with afree(p->trap) in settrap() while still in use. - */ - command(trapstr); - exstat = oexstat; - if (i == SIGEXIT_ || i == SIGERR_) { - if (p->flags & TF_CHANGED) - /* don't clear TF_CHANGED */ - afree(trapstr, APERM); - else - p->trap = trapstr; - p->flags |= old_changed; - } -} - -/* clear pending traps and reset user's trap handlers; used after fork(2) */ -void -cleartraps(void) -{ - int i; - Trap *p; - - trap = 0; - intrsig = 0; - fatal_trap = 0; - for (i = NSIG + 1, p = sigtraps; --i >= 0; p++) { - p->set = 0; - if ((p->flags & TF_USER_SET) && (p->trap && p->trap[0])) - settrap(p, NULL); - } -} - -/* restore signals just before an exec(2) */ -void -restoresigs(void) -{ - int i; - Trap *p; - - for (i = NSIG + 1, p = sigtraps; --i >= 0; p++) - if (p->flags & (TF_EXEC_IGN|TF_EXEC_DFL)) - setsig(p, (p->flags & TF_EXEC_IGN) ? SIG_IGN : SIG_DFL, - SS_RESTORE_CURR|SS_FORCE); -} - -void -settrap(Trap *p, char *s) -{ - sig_t f; - - if (p->trap) - afree(p->trap, APERM); - p->trap = str_save(s, APERM); /* handles s == 0 */ - p->flags |= TF_CHANGED; - f = !s ? SIG_DFL : s[0] ? trapsig : SIG_IGN; - - p->flags |= TF_USER_SET; - if ((p->flags & (TF_DFL_INTR|TF_FATAL)) && f == SIG_DFL) - f = trapsig; - else if (p->flags & TF_SHELL_USES) { - if (!(p->flags & TF_ORIG_IGN) || Flag(FTALKING)) { - /* do what user wants at exec time */ - p->flags &= ~(TF_EXEC_IGN|TF_EXEC_DFL); - if (f == SIG_IGN) - p->flags |= TF_EXEC_IGN; - else - p->flags |= TF_EXEC_DFL; - } - /* assumes handler already set to what shell wants it - * (normally trapsig, but could be j_sigchld() or SIG_IGN) - */ - return; - } - - /* todo: should we let user know signal is ignored? how? */ - setsig(p, f, SS_RESTORE_CURR|SS_USER); -} - -/* Called by c_print() when writing to a co-process to ensure SIGPIPE won't - * kill shell (unless user catches it and exits) - */ -int -block_pipe(void) -{ - int restore_dfl = 0; - Trap *p = &sigtraps[SIGPIPE]; - - if (!(p->flags & (TF_ORIG_IGN|TF_ORIG_DFL))) { - setsig(p, SIG_IGN, SS_RESTORE_CURR); - if (p->flags & TF_ORIG_DFL) - restore_dfl = 1; - } else if (p->cursig == SIG_DFL) { - setsig(p, SIG_IGN, SS_RESTORE_CURR); - restore_dfl = 1; /* restore to SIG_DFL */ - } - return restore_dfl; -} - -/* Called by c_print() to undo whatever block_pipe() did */ -void -restore_pipe(int restore_dfl) -{ - if (restore_dfl) - setsig(&sigtraps[SIGPIPE], SIG_DFL, SS_RESTORE_CURR); -} - -/* Set action for a signal. Action may not be set if original - * action was SIG_IGN, depending on the value of flags and - * FTALKING. - */ -int -setsig(Trap *p, sig_t f, int flags) -{ - struct sigaction sigact; - - if (p->signal == SIGEXIT_ || p->signal == SIGERR_) - return 1; - - /* First time setting this signal? If so, get and note the current - * setting. - */ - if (!(p->flags & (TF_ORIG_IGN|TF_ORIG_DFL))) { - sigaction(p->signal, &Sigact_ign, &sigact); - p->flags |= sigact.sa_handler == SIG_IGN ? - TF_ORIG_IGN : TF_ORIG_DFL; - p->cursig = SIG_IGN; - } - - /* Generally, an ignored signal stays ignored, except if - * - the user of an interactive shell wants to change it - * - the shell wants for force a change - */ - if ((p->flags & TF_ORIG_IGN) && !(flags & SS_FORCE) - && (!(flags & SS_USER) || !Flag(FTALKING))) - return 0; - - setexecsig(p, flags & SS_RESTORE_MASK); - - /* This is here 'cause there should be a way of clearing shtraps, but - * don't know if this is a sane way of doing it. At the moment, - * all users of shtrap are lifetime users (SIGCHLD, SIGALRM, SIGWINCH). - */ - if (!(flags & SS_USER)) - p->shtrap = NULL; - if (flags & SS_SHTRAP) { - p->shtrap = f; - f = trapsig; - } - - if (p->cursig != f) { - p->cursig = f; - sigemptyset(&sigact.sa_mask); - sigact.sa_flags = 0 /* interruptible */; - sigact.sa_handler = f; - sigaction(p->signal, &sigact, NULL); - } - - return 1; -} - -/* control what signal is set to before an exec() */ -void -setexecsig(Trap *p, int restore) -{ - /* XXX debugging */ - if (!(p->flags & (TF_ORIG_IGN|TF_ORIG_DFL))) - internal_errorf(1, "setexecsig: unset signal %d(%s)", - p->signal, p->name); - - /* restore original value for exec'd kids */ - p->flags &= ~(TF_EXEC_IGN|TF_EXEC_DFL); - switch (restore & SS_RESTORE_MASK) { - case SS_RESTORE_CURR: /* leave things as they currently are */ - break; - case SS_RESTORE_ORIG: - p->flags |= p->flags & TF_ORIG_IGN ? TF_EXEC_IGN : TF_EXEC_DFL; - break; - case SS_RESTORE_DFL: - p->flags |= TF_EXEC_DFL; - break; - case SS_RESTORE_IGN: - p->flags |= TF_EXEC_IGN; - break; - } -} diff --git a/tree.c b/tree.c deleted file mode 100644 index 5f637dd..0000000 --- a/tree.c +++ /dev/null @@ -1,695 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: tree.c,v 1.10 2002/02/27 19:37:09 dhartmei Exp $ */ - -/* - * command tree climbing - */ - -#include "sh.h" - -__RCSID("$MirOS$"); - -#define INDENT 4 - -#define tputc(c, shf) shf_putchar(c, shf); -static void ptree(struct op *t, int indent, struct shf *f); -static void pioact(struct shf *f, int indent, struct ioword *iop); -static void tputC(int c, struct shf *shf); -static void tputS(char *wp, struct shf *shf); -static void vfptreef(struct shf *shf, int indent, const char *fmt, va_list va); -static struct ioword **iocopy(struct ioword **iow, Area *ap); -static void iofree(struct ioword **iow, Area *ap); - -/* - * print a command tree - */ - -static void -ptree(struct op *t, int indent, struct shf *shf) -{ - char **w; - struct ioword **ioact; - struct op *t1; - - Chain: - if (t == NULL) - return; - switch (t->type) { - case TCOM: - if (t->vars) - for (w = t->vars; *w != NULL; ) - fptreef(shf, indent, "%S ", *w++); - else - fptreef(shf, indent, "#no-vars# "); - if (t->args) - for (w = t->args; *w != NULL; ) - fptreef(shf, indent, "%S ", *w++); - else - fptreef(shf, indent, "#no-args# "); - break; - case TEXEC: - t = t->left; - goto Chain; - case TPAREN: - fptreef(shf, indent + 2, "( %T) ", t->left); - break; - case TPIPE: - fptreef(shf, indent, "%T| ", t->left); - t = t->right; - goto Chain; - case TLIST: - fptreef(shf, indent, "%T%;", t->left); - t = t->right; - goto Chain; - case TOR: - case TAND: - fptreef(shf, indent, "%T%s %T", - t->left, (t->type==TOR) ? "||" : "&&", t->right); - break; - case TBANG: - fptreef(shf, indent, "! "); - t = t->right; - goto Chain; - case TDBRACKET: - { - int i; - - fptreef(shf, indent, "[["); - for (i = 0; t->args[i]; i++) - fptreef(shf, indent, " %S", t->args[i]); - fptreef(shf, indent, " ]] "); - break; - } - case TSELECT: - fptreef(shf, indent, "select %s ", t->str); - /* fall through */ - case TFOR: - if (t->type == TFOR) - fptreef(shf, indent, "for %s ", t->str); - if (t->vars != NULL) { - fptreef(shf, indent, "in "); - for (w = t->vars; *w; ) - fptreef(shf, indent, "%S ", *w++); - fptreef(shf, indent, "%;"); - } - fptreef(shf, indent + INDENT, "do%N%T", t->left); - fptreef(shf, indent, "%;done "); - break; - case TCASE: - fptreef(shf, indent, "case %S in", t->str); - for (t1 = t->left; t1 != NULL; t1 = t1->right) { - fptreef(shf, indent, "%N("); - for (w = t1->vars; *w != NULL; w++) - fptreef(shf, indent, "%S%c", *w, - (w[1] != NULL) ? '|' : ')'); - fptreef(shf, indent + INDENT, "%;%T%N;;", t1->left); - } - fptreef(shf, indent, "%Nesac "); - break; - case TIF: - case TELIF: - /* 3 == strlen("if ") */ - fptreef(shf, indent + 3, "if %T", t->left); - for (;;) { - t = t->right; - if (t->left != NULL) { - fptreef(shf, indent, "%;"); - fptreef(shf, indent + INDENT, "then%N%T", - t->left); - } - if (t->right == NULL || t->right->type != TELIF) - break; - t = t->right; - fptreef(shf, indent, "%;"); - /* 5 == strlen("elif ") */ - fptreef(shf, indent + 5, "elif %T", t->left); - } - if (t->right != NULL) { - fptreef(shf, indent, "%;"); - fptreef(shf, indent + INDENT, "else%;%T", t->right); - } - fptreef(shf, indent, "%;fi "); - break; - case TWHILE: - case TUNTIL: - /* 6 == strlen("while"/"until") */ - fptreef(shf, indent + 6, "%s %T", - (t->type==TWHILE) ? "while" : "until", - t->left); - fptreef(shf, indent, "%;do"); - fptreef(shf, indent + INDENT, "%;%T", t->right); - fptreef(shf, indent, "%;done "); - break; - case TBRACE: - fptreef(shf, indent + INDENT, "{%;%T", t->left); - fptreef(shf, indent, "%;} "); - break; - case TCOPROC: - fptreef(shf, indent, "%T|& ", t->left); - break; - case TASYNC: - fptreef(shf, indent, "%T& ", t->left); - break; - case TFUNCT: - fptreef(shf, indent, - t->u.ksh_func ? "function %s %T" : "%s() %T", - t->str, t->left); - break; - case TTIME: - fptreef(shf, indent, "time %T", t->left); - break; - default: - fptreef(shf, indent, ""); - break; - } - if ((ioact = t->ioact) != NULL) { - int need_nl = 0; - - while (*ioact != NULL) - pioact(shf, indent, *ioact++); - /* Print here documents after everything else... */ - for (ioact = t->ioact; *ioact != NULL; ) { - struct ioword *iop = *ioact++; - - /* heredoc is 0 when tracing (set -x) */ - if ((iop->flag & IOTYPE) == IOHERE && iop->heredoc) { - tputc('\n', shf); - shf_puts(iop->heredoc, shf); - fptreef(shf, indent, "%s", - evalstr(iop->delim, 0)); - need_nl = 1; - } - } - /* Last delimiter must be followed by a newline (this often - * leads to an extra blank line, but its not worth worrying - * about) - */ - if (need_nl) - tputc('\n', shf); - } -} - -static void -pioact(struct shf *shf, int indent, struct ioword *iop) -{ - int flag = iop->flag; - int type = flag & IOTYPE; - int expected; - - expected = (type == IOREAD || type == IORDWR || type == IOHERE) ? 0 - : (type == IOCAT || type == IOWRITE) ? 1 - : (type == IODUP && (iop->unit == !(flag & IORDUP))) ? - iop->unit - : iop->unit + 1; - if (iop->unit != expected) - tputc('0' + iop->unit, shf); - - switch (type) { - case IOREAD: - fptreef(shf, indent, "< "); - break; - case IOHERE: - if (flag&IOSKIP) - fptreef(shf, indent, "<<- "); - else - fptreef(shf, indent, "<< "); - break; - case IOCAT: - fptreef(shf, indent, ">> "); - break; - case IOWRITE: - if (flag&IOCLOB) - fptreef(shf, indent, ">| "); - else - fptreef(shf, indent, "> "); - break; - case IORDWR: - fptreef(shf, indent, "<> "); - break; - case IODUP: - if (flag & IORDUP) - fptreef(shf, indent, "<&"); - else - fptreef(shf, indent, ">&"); - break; - } - /* name/delim are 0 when printing syntax errors */ - if (type == IOHERE) { - if (iop->delim) - fptreef(shf, indent, "%S ", iop->delim); - } else if (iop->name) - fptreef(shf, indent, (iop->flag & IONAMEXP) ? "%s " : "%S ", - iop->name); -} - - -/* - * variants of fputc, fputs for ptreef and snptreef - */ - -static void -tputC(int c, struct shf *shf) -{ - if ((c&0x60) == 0) { /* C0|C1 */ - tputc((c&0x80) ? '$' : '^', shf); - tputc(((c&0x7F)|0x40), shf); - } else if ((c&0x7F) == 0x7F) { /* DEL */ - tputc((c&0x80) ? '$' : '^', shf); - tputc('?', shf); - } else - tputc(c, shf); -} - -static void -tputS(char *wp, struct shf *shf) -{ - int c, quoted=0; - - /* problems: - * `...` -> $(...) - * 'foo' -> "foo" - * could change encoding to: - * OQUOTE ["'] ... CQUOTE ["'] - * COMSUB [(`] ...\0 (handle $ ` \ and maybe " in `...` case) - */ - while (1) - switch ((c = *wp++)) { - case EOS: - return; - case CHAR: - tputC(*wp++, shf); - break; - case QCHAR: - c = *wp++; - if (!quoted || (c == '"' || c == '`' || c == '$')) - tputc('\\', shf); - tputC(c, shf); - break; - case COMSUB: - tputc('$', shf); - tputc('(', shf); - while (*wp != 0) - tputC(*wp++, shf); - tputc(')', shf); - wp++; - break; - case EXPRSUB: - tputc('$', shf); - tputc('(', shf); - tputc('(', shf); - while (*wp != 0) - tputC(*wp++, shf); - tputc(')', shf); - tputc(')', shf); - wp++; - break; - case OQUOTE: - quoted = 1; - tputc('"', shf); - break; - case CQUOTE: - quoted = 0; - tputc('"', shf); - break; - case OSUBST: - tputc('$', shf); - if (*wp++ == '{') - tputc('{', shf); - while ((c = *wp++) != 0) - tputC(c, shf); - break; - case CSUBST: - if (*wp++ == '}') - tputc('}', shf); - break; - case OPAT: - tputc(*wp++, shf); - tputc('(', shf); - break; - case SPAT: - tputc('|', shf); - break; - case CPAT: - tputc(')', shf); - break; - } -} - -/* - * this is the _only_ way to reliably handle - * variable args with an ANSI compiler - */ -/* VARARGS */ -int -fptreef(struct shf *shf, int indent, const char *fmt, ...) -{ - va_list va; - - SH_VA_START(va, fmt); - - vfptreef(shf, indent, fmt, va); - va_end(va); - return 0; -} - -/* VARARGS */ -char * -snptreef(char *s, int n, const char *fmt, ...) -{ - va_list va; - struct shf shf; - - shf_sopen(s, n, SHF_WR | (s ? 0 : SHF_DYNAMIC), &shf); - - SH_VA_START(va, fmt); - vfptreef(&shf, 0, fmt, va); - va_end(va); - - return shf_sclose(&shf); /* null terminates */ -} - -static void -vfptreef(struct shf *shf, int indent, const char *fmt, va_list va) -{ - int c; - - while ((c = *fmt++)) - if (c == '%') { - long n; - char *p; - int neg; - - switch ((c = *fmt++)) { - case 'c': - tputc(va_arg(va, int), shf); - break; - case 's': - p = va_arg(va, char *); - while (*p) - tputc(*p++, shf); - break; - case 'S': /* word */ - p = va_arg(va, char *); - tputS(p, shf); - break; - case 'd': case 'u': /* decimal */ - n = (c == 'd') ? (long)(va_arg(va, int)) - : (long)(va_arg(va, unsigned int)); - neg = (c == 'd') && (n < 0); - p = ulton((neg) ? -n : n, 10); - if (neg) - *--p = '-'; - while (*p) - tputc(*p++, shf); - break; - case 'T': /* format tree */ - ptree(va_arg(va, struct op *), indent, shf); - break; - case ';': /* newline or ; */ - case 'N': /* newline or space */ - if (shf->flags & SHF_STRING) { - if (c == ';') - tputc(';', shf); - tputc(' ', shf); - } else { - int i; - - tputc('\n', shf); - for (i = indent; i >= 8; i -= 8) - tputc('\t', shf); - for (; i > 0; --i) - tputc(' ', shf); - } - break; - case 'R': - pioact(shf, indent, va_arg(va, struct ioword *)); - break; - default: - tputc(c, shf); - break; - } - } else - tputc(c, shf); -} - -/* - * copy tree (for function definition) - */ - -struct op * -tcopy(struct op *t, Area *ap) -{ - struct op *r; - char **tw, **rw; - - if (t == NULL) - return NULL; - - r = (struct op *) alloc(sizeof(struct op), ap); - - r->type = t->type; - r->u.evalflags = t->u.evalflags; - - r->str = t->type == TCASE ? wdcopy(t->str, ap) : str_save(t->str, ap); - - if (t->vars == NULL) - r->vars = NULL; - else { - for (tw = t->vars; *tw++ != NULL; ) - ; - rw = r->vars = (char **) - alloc((tw - t->vars + 1) * sizeof(*tw), ap); - for (tw = t->vars; *tw != NULL; ) - *rw++ = wdcopy(*tw++, ap); - *rw = NULL; - } - - if (t->args == NULL) - r->args = NULL; - else { - for (tw = t->args; *tw++ != NULL; ) - ; - rw = r->args = (char **) - alloc((tw - t->args + 1) * sizeof(*tw), ap); - for (tw = t->args; *tw != NULL; ) - *rw++ = wdcopy(*tw++, ap); - *rw = NULL; - } - - r->ioact = (t->ioact == NULL) ? NULL : iocopy(t->ioact, ap); - - r->left = tcopy(t->left, ap); - r->right = tcopy(t->right, ap); - r->lineno = t->lineno; - - return r; -} - -char * -wdcopy(const char *wp, Area *ap) -{ - size_t len = wdscan(wp, EOS) - wp; - return memcpy(alloc(len, ap), wp, len); -} - -/* return the position of prefix c in wp plus 1 */ -char * -wdscan(const char *wp, int c) -{ - int nest = 0; - - while (1) - switch (*wp++) { - case EOS: - return (char *) wp; - case CHAR: - case QCHAR: - wp++; - break; - case COMSUB: - case EXPRSUB: - while (*wp++ != 0) - ; - break; - case OQUOTE: - case CQUOTE: - break; - case OSUBST: - nest++; - while (*wp++ != '\0') - ; - break; - case CSUBST: - wp++; - if (c == CSUBST && nest == 0) - return (char *) wp; - nest--; - break; - case OPAT: - nest++; - wp++; - break; - case SPAT: - case CPAT: - if (c == wp[-1] && nest == 0) - return (char *) wp; - if (wp[-1] == CPAT) - nest--; - break; - default: - internal_errorf(0, - "wdscan: unknown char 0x%x (carrying on)", - wp[-1]); - } -} - -/* return a copy of wp without any of the mark up characters and - * with quote characters (" ' \) stripped. - * (string is allocated from ATEMP) - */ -char * -wdstrip(const char *wp) -{ - struct shf shf; - int c; - - shf_sopen(NULL, 32, SHF_WR | SHF_DYNAMIC, &shf); - - /* problems: - * `...` -> $(...) - * x${foo:-"hi"} -> x${foo:-hi} - * x${foo:-'hi'} -> x${foo:-hi} - */ - while (1) - switch ((c = *wp++)) { - case EOS: - return shf_sclose(&shf); /* null terminates */ - case CHAR: - case QCHAR: - shf_putchar(*wp++, &shf); - break; - case COMSUB: - shf_putchar('$', &shf); - shf_putchar('(', &shf); - while (*wp != 0) - shf_putchar(*wp++, &shf); - shf_putchar(')', &shf); - break; - case EXPRSUB: - shf_putchar('$', &shf); - shf_putchar('(', &shf); - shf_putchar('(', &shf); - while (*wp != 0) - shf_putchar(*wp++, &shf); - shf_putchar(')', &shf); - shf_putchar(')', &shf); - break; - case OQUOTE: - break; - case CQUOTE: - break; - case OSUBST: - shf_putchar('$', &shf); - if (*wp++ == '{') - shf_putchar('{', &shf); - while ((c = *wp++) != 0) - shf_putchar(c, &shf); - break; - case CSUBST: - if (*wp++ == '}') - shf_putchar('}', &shf); - break; - case OPAT: - shf_putchar(*wp++, &shf); - shf_putchar('(', &shf); - break; - case SPAT: - shf_putchar('|', &shf); - break; - case CPAT: - shf_putchar(')', &shf); - break; - } -} - -static struct ioword ** -iocopy(struct ioword **iow, Area *ap) -{ - struct ioword **ior; - int i; - - for (ior = iow; *ior++ != NULL; ) - ; - ior = (struct ioword **) alloc((ior - iow + 1) * sizeof(*ior), ap); - - for (i = 0; iow[i] != NULL; i++) { - struct ioword *p, *q; - - p = iow[i]; - q = (struct ioword *) alloc(sizeof(*p), ap); - ior[i] = q; - *q = *p; - if (p->name != NULL) - q->name = wdcopy(p->name, ap); - if (p->delim != NULL) - q->delim = wdcopy(p->delim, ap); - if (p->heredoc != NULL) - q->heredoc = str_save(p->heredoc, ap); - } - ior[i] = NULL; - - return ior; -} - -/* - * free tree (for function definition) - */ - -void -tfree(struct op *t, Area *ap) -{ - char **w; - - if (t == NULL) - return; - - if (t->str != NULL) - afree((void*)t->str, ap); - - if (t->vars != NULL) { - for (w = t->vars; *w != NULL; w++) - afree((void*)*w, ap); - afree((void*)t->vars, ap); - } - - if (t->args != NULL) { - for (w = t->args; *w != NULL; w++) - afree((void*)*w, ap); - afree((void*)t->args, ap); - } - - if (t->ioact != NULL) - iofree(t->ioact, ap); - - tfree(t->left, ap); - tfree(t->right, ap); - - afree((void*)t, ap); -} - -static void -iofree(struct ioword **iow, Area *ap) -{ - struct ioword **iop; - struct ioword *p; - - for (iop = iow; (p = *iop++) != NULL; ) { - if (p->name != NULL) - afree((void*)p->name, ap); - if (p->delim != NULL) - afree((void*)p->delim, ap); - if (p->heredoc != NULL) - afree((void*)p->heredoc, ap); - afree((void*)p, ap); - } -} diff --git a/tree.h b/tree.h deleted file mode 100644 index 63a6494..0000000 --- a/tree.h +++ /dev/null @@ -1,146 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: tree.h,v 1.8 2003/10/22 07:40:38 jmc Exp $ */ -/* $From: tree.h,v 1.3 1994/05/31 13:34:34 michael Exp $ */ - -#ifndef TREE_H -#define TREE_H - -/* - * command trees for compile/execute - */ - -#define NOBLOCK ((struct op *)NULL) -#define NOWORD ((char *)NULL) -#define NOWORDS ((char **)NULL) - -/* - * Description of a command or an operation on commands. - */ -struct op { - short type; /* operation type, see below */ - union { /* WARNING: newtp(), tcopy() use evalflags = 0 to clear union */ - short evalflags; /* TCOM: arg expansion eval() flags */ - short ksh_func; /* TFUNC: function x (vs x()) */ - } u; - char **args; /* arguments to a command */ - char **vars; /* variable assignments */ - struct ioword **ioact; /* IO actions (eg, < > >>) */ - struct op *left, *right; /* descendents */ - char *str; /* word for case; identifier for for, - * select, and functions; - * path to execute for TEXEC; - * time hook for TCOM. - */ - int lineno; /* TCOM/TFUNC: LINENO for this */ -}; - -/* Tree.type values */ -#define TEOF 0 -#define TCOM 1 /* command */ -#define TPAREN 2 /* (c-list) */ -#define TPIPE 3 /* a | b */ -#define TLIST 4 /* a ; b */ -#define TOR 5 /* || */ -#define TAND 6 /* && */ -#define TBANG 7 /* ! */ -#define TDBRACKET 8 /* [[ .. ]] */ -#define TFOR 9 -#define TSELECT 10 -#define TCASE 11 -#define TIF 12 -#define TWHILE 13 -#define TUNTIL 14 -#define TELIF 15 -#define TPAT 16 /* pattern in case */ -#define TBRACE 17 /* {c-list} */ -#define TASYNC 18 /* c & */ -#define TFUNCT 19 /* function name { command; } */ -#define TTIME 20 /* time pipeline */ -#define TEXEC 21 /* fork/exec eval'd TCOM */ -#define TCOPROC 22 /* coprocess |& */ - -/* - * prefix codes for words in command tree - */ -#define EOS 0 /* end of string */ -#define CHAR 1 /* unquoted character */ -#define QCHAR 2 /* quoted character */ -#define COMSUB 3 /* $() substitution (0 terminated) */ -#define EXPRSUB 4 /* $(()) substitution (0 terminated) */ -#define OQUOTE 5 /* opening " or ' */ -#define CQUOTE 6 /* closing " or ' */ -#define OSUBST 7 /* opening ${ subst (followed by { or X) */ -#define CSUBST 8 /* closing } of above (followed by } or X) */ -#define OPAT 9 /* open pattern: *(, @(, etc. */ -#define SPAT 10 /* separate pattern: | */ -#define CPAT 11 /* close pattern: ) */ - -/* - * IO redirection - */ -struct ioword { - int unit; /* unit affected */ - int flag; /* action (below) */ - char *name; /* file name (unused if heredoc) */ - char *delim; /* delimiter for <<,<<- */ - char *heredoc;/* content of heredoc */ -}; - -/* ioword.flag - type of redirection */ -#define IOTYPE 0xF /* type: bits 0:3 */ -#define IOREAD 0x1 /* < */ -#define IOWRITE 0x2 /* > */ -#define IORDWR 0x3 /* <>: todo */ -#define IOHERE 0x4 /* << (here file) */ -#define IOCAT 0x5 /* >> */ -#define IODUP 0x6 /* <&/>& */ -#define IOEVAL BIT(4) /* expand in << */ -#define IOSKIP BIT(5) /* <<-, skip ^\t* */ -#define IOCLOB BIT(6) /* >|, override -o noclobber */ -#define IORDUP BIT(7) /* x<&y (as opposed to x>&y) */ -#define IONAMEXP BIT(8) /* name has been expanded */ - -/* execute/exchild flags */ -#define XEXEC BIT(0) /* execute without forking */ -#define XFORK BIT(1) /* fork before executing */ -#define XBGND BIT(2) /* command & */ -#define XPIPEI BIT(3) /* input is pipe */ -#define XPIPEO BIT(4) /* output is pipe */ -#define XPIPE (XPIPEI|XPIPEO) /* member of pipe */ -#define XXCOM BIT(5) /* `...` command */ -#define XPCLOSE BIT(6) /* exchild: close close_fd in parent */ -#define XCCLOSE BIT(7) /* exchild: close close_fd in child */ -#define XERROK BIT(8) /* non-zero exit ok (for set -e) */ -#define XCOPROC BIT(9) /* starting a co-process */ -#define XTIME BIT(10) /* timing TCOM command */ - -/* - * flags to control expansion of words (assumed by t->evalflags to fit - * in a short) - */ -#define DOBLANK BIT(0) /* perform blank interpretation */ -#define DOGLOB BIT(1) /* expand [?* */ -#define DOPAT BIT(2) /* quote *?[ */ -#define DOTILDE BIT(3) /* normal ~ expansion (first char) */ -#define DONTRUNCOMMAND BIT(4) /* do not run $(command) things */ -#define DOASNTILDE BIT(5) /* assignment ~ expansion (after =, :) */ -#define DOBRACE_ BIT(6) /* used by expand(): do brace expansion */ -#define DOMAGIC_ BIT(7) /* used by expand(): string contains MAGIC */ -#define DOTEMP_ BIT(8) /* ditto : in word part of ${..[%#=?]..} */ -#define DOVACHECK BIT(9) /* var assign check (for typeset, set, etc) */ -#define DOMARKDIRS BIT(10) /* force markdirs behaviour */ - -/* - * The arguments of [[ .. ]] expressions are kept in t->args[] and flags - * indicating how the arguments have been munged are kept in t->vars[]. - * The contents of t->vars[] are stuffed strings (so they can be treated - * like all other t->vars[]) in which the second character is the one that - * is examined. The DB_* defines are the values for these second characters. - */ -#define DB_NORM 1 /* normal argument */ -#define DB_OR 2 /* || -> -o conversion */ -#define DB_AND 3 /* && -> -a conversion */ -#define DB_BE 4 /* an inserted -BE */ -#define DB_PAT 5 /* a pattern argument */ - -#endif /* ndef TREE_H */ diff --git a/tty.c b/tty.c deleted file mode 100644 index e02366a..0000000 --- a/tty.c +++ /dev/null @@ -1,63 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: tty.c,v 1.5 2004/12/18 22:35:41 millert Exp $ */ - -#include "sh.h" -#include "ksh_stat.h" -#define EXTERN -#include "tty.h" -#undef EXTERN - -__RCSID("$MirOS$"); - -/* Initialize tty_fd. Used for saving/reseting tty modes upon - * foreground job completion and for setting up tty process group. - */ -void -tty_init(int init_ttystate) -{ - int do_close = 1; - int tfd; - - if (tty_fd >= 0) { - close(tty_fd); - tty_fd = -1; - } - tty_devtty = 1; - - if ((tfd = open("/dev/tty", O_RDWR, 0)) < 0) { - tty_devtty = 0; - warningf(false, - "No controlling tty (open /dev/tty: %s)", - strerror(errno)); - do_close = 0; - if (isatty(0)) - tfd = 0; - else if (isatty(2)) - tfd = 2; - else { - warningf(false, "Can't find tty file descriptor"); - return; - } - } - if ((tty_fd = ksh_dupbase(tfd, FDBASE)) < 0) { - warningf(false, "j_ttyinit: dup of tty fd failed: %s", - strerror(errno)); - } else if (fcntl(tty_fd, F_SETFD, FD_CLOEXEC) < 0) { - warningf(false, "j_ttyinit: can't set close-on-exec flag: %s", - strerror(errno)); - close(tty_fd); - tty_fd = -1; - } else if (init_ttystate) - tcgetattr(tty_fd, &tty_state); - if (do_close) - close(tfd); -} - -void -tty_close(void) -{ - if (tty_fd >= 0) { - close(tty_fd); - tty_fd = -1; - } -} diff --git a/tty.h b/tty.h deleted file mode 100644 index 3222604..0000000 --- a/tty.h +++ /dev/null @@ -1,44 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: tty.h,v 1.4 2004/12/18 22:12:23 millert Exp $ */ - -#ifndef TTY_H -#define TTY_H - -/* some useful #defines */ -#ifdef EXTERN -# define I__(i) = i -#else -# define I__(i) -# define EXTERN extern -# define EXTERN_DEFINED -#endif - -/* Don't know of a system on which including sys/ioctl.h with termios.h - * causes problems. If there is one, these lines need to be deleted and - * aclocal.m4 needs to have stuff un-commented. - */ -#ifdef SYS_IOCTL_WITH_TERMIOS -# define SYS_IOCTL_WITH_TERMIOS -#endif /* SYS_IOCTL_WITH_TERMIOS */ -#ifdef SYS_IOCTL_WITH_TERMIO -# define SYS_IOCTL_WITH_TERMIO -#endif /* SYS_IOCTL_WITH_TERMIO */ - -#include -typedef struct termios TTY_state; - -EXTERN int tty_fd I__(-1); /* dup'd tty file descriptor */ -EXTERN int tty_devtty; /* true if tty_fd is from /dev/tty */ -EXTERN struct termios tty_state; /* saved tty state */ - -extern void tty_init(int init_ttystate); -extern void tty_close(void); - -/* be sure not to interfere with anyone else's idea about EXTERN */ -#ifdef EXTERN_DEFINED -# undef EXTERN_DEFINED -# undef EXTERN -#endif -#undef I__ - -#endif /* ndef TTY_H */ diff --git a/var.c b/var.c deleted file mode 100644 index b5c1962..0000000 --- a/var.c +++ /dev/null @@ -1,1163 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: var.c,v 1.17 2004/05/08 19:42:35 deraadt Exp $ */ - -#include "sh.h" -#include -#include "ksh_stat.h" -#include - -__RCSID("$MirOS$"); - -/* - * Variables - * - * WARNING: unreadable code, needs a rewrite - * - * if (flag&INTEGER), val.i contains integer value, and type contains base. - * otherwise, (val.s + type) contains string value. - * if (flag&EXPORT), val.s contains "name=value" for E-Z exporting. - */ -static struct tbl vtemp; -static struct table specials; -static char *formatstr(struct tbl *vp, const char *s); -static void export(struct tbl *vp, const char *val); -static int special(const char *name); -static void unspecial(const char *name); -static void getspec(struct tbl *vp); -static void setspec(struct tbl *vp); -static void unsetspec(struct tbl *vp); -static struct tbl *arraysearch(struct tbl *, int); - -/* - * create a new block for function calls and simple commands - * assume caller has allocated and set up e->loc - */ -void -newblock(void) -{ - struct block *l; - static char *const empty[] = {null}; - - l = (struct block *) alloc(sizeof(struct block), ATEMP); - l->flags = 0; - ainit(&l->area); /* todo: could use e->area (l->area => l->areap) */ - if (!e->loc) { - l->argc = 0; - l->argv = (char **) empty; - } else { - l->argc = e->loc->argc; - l->argv = e->loc->argv; - } - l->exit = l->error = NULL; - tinit(&l->vars, &l->area, 0); - tinit(&l->funs, &l->area, 0); - l->next = e->loc; - e->loc = l; -} - -/* - * pop a block handling special variables - */ -void -popblock(void) -{ - struct block *l = e->loc; - struct tbl *vp, **vpp = l->vars.tbls, *vq; - int i; - - e->loc = l->next; /* pop block */ - for (i = l->vars.size; --i >= 0; ) - if ((vp = *vpp++) != NULL && (vp->flag&SPECIAL)) { - if ((vq = global(vp->name))->flag & ISSET) - setspec(vq); - else - unsetspec(vq); - } - if (l->flags & BF_DOGETOPTS) - user_opt = l->getopts_state; - afreeall(&l->area); - afree(l, ATEMP); -} - -/* called by main() to initialize variable data structures */ -void -initvar(void) -{ - static const struct { - const char *name; - int v; - } names[] = { - { "COLUMNS", V_COLUMNS }, - { "IFS", V_IFS }, - { "OPTIND", V_OPTIND }, - { "PATH", V_PATH }, - { "POSIXLY_CORRECT", V_POSIXLY_CORRECT }, - { "TMPDIR", V_TMPDIR }, - { "HISTFILE", V_HISTFILE }, - { "HISTSIZE", V_HISTSIZE }, - { "EDITOR", V_EDITOR }, - { "VISUAL", V_VISUAL }, - { "RANDOM", V_RANDOM }, - { "SECONDS", V_SECONDS }, - { "TMOUT", V_TMOUT }, - { "LINENO", V_LINENO }, - { "PGRP", V_PGRP }, - { NULL, 0 } - }; - int i; - struct tbl *tp; - - tinit(&specials, APERM, 32); /* must be 2^n (currently 17 specials) */ - for (i = 0; names[i].name; i++) { - tp = tenter(&specials, names[i].name, hash(names[i].name)); - tp->flag = DEFINED|ISSET; - tp->type = names[i].v; - } -} - -/* Used to calculate an array index for global()/local(). Sets *arrayp to - * non-zero if this is an array, sets *valp to the array index, returns - * the basename of the array. - */ -static const char *array_index_calc(const char *, bool *, int *); - -static const char * -array_index_calc(const char *n, bool *arrayp, int *valp) -{ - const char *p; - int len; - - *arrayp = false; - p = skip_varname(n, false); - if (p != n && *p == '[' && (len = array_ref_len(p))) { - char *sub, *tmp; - long rval; - - /* Calculate the value of the subscript */ - *arrayp = true; - tmp = str_nsave(p+1, len-2, ATEMP); - sub = substitute(tmp, 0); - afree(tmp, ATEMP); - n = str_nsave(n, p - n, ATEMP); - evaluate(sub, &rval, KSH_UNWIND_ERROR); - if (rval < 0 || rval > 2147483647) - errorf("%s: subscript out of range", n); - *valp = rval; - afree(sub, ATEMP); - } - return n; -} - -/* - * Search for variable, if not found create globally. - */ -struct tbl * -global(const char *n) -{ - struct block *l = e->loc; - struct tbl *vp; - int c; - unsigned h; - bool array; - int val; - - /* Check to see if this is an array */ - n = array_index_calc(n, &array, &val); - h = hash(n); - c = n[0]; - if (!letter(c)) { - if (array) - errorf("bad substitution"); - vp = &vtemp; - vp->flag = DEFINED; - vp->type = 0; - vp->areap = ATEMP; - *vp->name = c; - if (digit(c)) { - for (c = 0; digit(*n); n++) - c = c*10 + *n-'0'; - if (c <= l->argc) - /* setstr can't fail here */ - setstr(vp, l->argv[c], KSH_RETURN_ERROR); - vp->flag |= RDONLY; - return vp; - } - vp->flag |= RDONLY; - if (n[1] != '\0') - return vp; - vp->flag |= ISSET|INTEGER; - switch (c) { - case '$': - vp->val.i = kshpid; - break; - case '!': - /* If no job, expand to nothing */ - if ((vp->val.i = j_async()) == 0) - vp->flag &= ~(ISSET|INTEGER); - break; - case '?': - vp->val.i = exstat; - break; - case '#': - vp->val.i = l->argc; - break; - case '-': - vp->flag &= ~INTEGER; - vp->val.s = getoptions(); - break; - default: - vp->flag &= ~(ISSET|INTEGER); - } - return vp; - } - for (l = e->loc; ; l = l->next) { - vp = tsearch(&l->vars, n, h); - if (vp != NULL) { - if (array) - return arraysearch(vp, val); - else - return vp; - } - if (l->next == NULL) - break; - } - vp = tenter(&l->vars, n, h); - if (array) - vp = arraysearch(vp, val); - vp->flag |= DEFINED; - if (special(n)) - vp->flag |= SPECIAL; - return vp; -} - -/* - * Search for local variable, if not found create locally. - */ -struct tbl * -local(const char *n, bool copy) -{ - struct block *l = e->loc; - struct tbl *vp; - unsigned h; - bool array; - int val; - - /* Check to see if this is an array */ - n = array_index_calc(n, &array, &val); - h = hash(n); - if (!letter(*n)) { - vp = &vtemp; - vp->flag = DEFINED|RDONLY; - vp->type = 0; - vp->areap = ATEMP; - return vp; - } - vp = tenter(&l->vars, n, h); - if (copy && !(vp->flag & DEFINED)) { - struct block *ll = l; - struct tbl *vq = NULL; - - while ((ll = ll->next) && !(vq = tsearch(&ll->vars, n, h))) - ; - if (vq) { - vp->flag |= vq->flag & (EXPORT|INTEGER|RDONLY - |LJUST|RJUST|ZEROFIL - |LCASEV|UCASEV_AL|INT_U|INT_L); - if (vq->flag & INTEGER) - vp->type = vq->type; - vp->u2.field = vq->u2.field; - } - } - if (array) - vp = arraysearch(vp, val); - vp->flag |= DEFINED; - if (special(n)) - vp->flag |= SPECIAL; - return vp; -} - -/* get variable string value */ -char * -str_val(struct tbl *vp) -{ - char *s; - - if ((vp->flag&SPECIAL)) - getspec(vp); - if (!(vp->flag&ISSET)) - s = null; /* special to dollar() */ - else if (!(vp->flag&INTEGER)) /* string source */ - s = vp->val.s + vp->type; - else { /* integer source */ - /* worst case number length is when base=2, so use BITS(long) */ - /* minus base # number null */ - static char strbuf[1 + 2 + 1 + 8*sizeof(long) + 1]; - const char *digits = (vp->flag & UCASEV_AL) ? - "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" - : "0123456789abcdefghijklmnopqrstuvwxyz"; - unsigned long n; - int base; - - s = strbuf + sizeof(strbuf); - if (vp->flag & INT_U) - n = (unsigned long) vp->val.i; - else - n = (vp->val.i < 0) ? -vp->val.i : vp->val.i; - base = (vp->type == 0) ? 10 : vp->type; - - *--s = '\0'; - do { - *--s = digits[n % base]; - n /= base; - } while (n != 0); - if (base != 10) { - *--s = '#'; - *--s = digits[base % 10]; - if (base >= 10) - *--s = digits[base / 10]; - } - if (!(vp->flag & INT_U) && vp->val.i < 0) - *--s = '-'; - if (vp->flag & (RJUST|LJUST)) /* case already dealt with */ - s = formatstr(vp, s); - } - return s; -} - -/* get variable integer value, with error checking */ -long -intval(struct tbl *vp) -{ - long num; - int base; - - base = getint(vp, &num); - if (base == -1) - /* XXX check calls - is error here ok by POSIX? */ - errorf("%s: bad number", str_val(vp)); - return num; -} - -/* set variable to string value */ -int -setstr(struct tbl *vq, const char *s, int error_ok) -{ - int no_ro_check = error_ok & 0x4; - error_ok &= ~0x4; - if ((vq->flag & RDONLY) && !no_ro_check) { - warningf(true, "%s: is read only", vq->name); - if (!error_ok) - errorf(null); - return 0; - } - if (!(vq->flag&INTEGER)) { /* string dest */ - if ((vq->flag&ALLOC)) { - /* debugging */ - if (s >= vq->val.s - && s <= vq->val.s + strlen(vq->val.s)) - internal_errorf(true, - "setstr: %s=%s: assigning to self", - vq->name, s); - afree((void*)vq->val.s, vq->areap); - } - vq->flag &= ~(ISSET|ALLOC); - vq->type = 0; - if (s && (vq->flag & (UCASEV_AL|LCASEV|LJUST|RJUST))) - s = formatstr(vq, s); - if ((vq->flag&EXPORT)) - export(vq, s); - else { - vq->val.s = str_save(s, vq->areap); - vq->flag |= ALLOC; - } - } else /* integer dest */ - if (!v_evaluate(vq, s, error_ok)) - return 0; - vq->flag |= ISSET; - if ((vq->flag&SPECIAL)) - setspec(vq); - return 1; -} - -/* set variable to integer */ -void -setint(struct tbl *vq, long int n) -{ - if (!(vq->flag&INTEGER)) { - struct tbl *vp = &vtemp; - vp->flag = (ISSET|INTEGER); - vp->type = 0; - vp->areap = ATEMP; - vp->val.i = n; - /* setstr can't fail here */ - setstr(vq, str_val(vp), KSH_RETURN_ERROR); - } else - vq->val.i = n; - vq->flag |= ISSET; - if ((vq->flag&SPECIAL)) - setspec(vq); -} - -int -getint(struct tbl *vp, long int *nump) -{ - char *s; - int c; - int base, neg; - int have_base = 0; - long num; - - if (vp->flag&SPECIAL) - getspec(vp); - /* XXX is it possible for ISSET to be set and val.s to be 0? */ - if (!(vp->flag&ISSET) || (!(vp->flag&INTEGER) && vp->val.s == NULL)) - return -1; - if (vp->flag&INTEGER) { - *nump = vp->val.i; - return vp->type; - } - s = vp->val.s + vp->type; - if (s == NULL) /* redundant given initial test */ - s = null; - base = 10; - num = 0; - neg = 0; - for (c = *s++; c ; c = *s++) { - if (c == '-') { - neg++; - } else if (c == '#') { - base = (int) num; - if (have_base || base < 2 || base > 36) - return -1; - num = 0; - have_base = 1; - } else if (letnum(c)) { - if (isdigit(c)) - c -= '0'; - else if (islower(c)) - c -= 'a' - 10; /* todo: assumes ascii */ - else if (isupper(c)) - c -= 'A' - 10; /* todo: assumes ascii */ - else - c = -1; /* _: force error */ - if (c < 0 || c >= base) - return -1; - num = num * base + c; - } else - return -1; - } - if (neg) - num = -num; - *nump = num; - return base; -} - -/* convert variable vq to integer variable, setting its value from vp - * (vq and vp may be the same) - */ -struct tbl * -setint_v(struct tbl *vq, struct tbl *vp) -{ - int base; - long num; - - if ((base = getint(vp, &num)) == -1) - return NULL; - if (!(vq->flag & INTEGER) && (vq->flag & ALLOC)) { - vq->flag &= ~ALLOC; - afree(vq->val.s, vq->areap); - } - vq->val.i = num; - if (vq->type == 0) /* default base */ - vq->type = base; - vq->flag |= ISSET|INTEGER; - if (vq->flag&SPECIAL) - setspec(vq); - return vq; -} - -static char * -formatstr(struct tbl *vp, const char *s) -{ - int olen, nlen; - char *p, *q; - - olen = strlen(s); - - if (vp->flag & (RJUST|LJUST)) { - if (!vp->u2.field) /* default field width */ - vp->u2.field = olen; - nlen = vp->u2.field; - } else - nlen = olen; - - p = (char *) alloc(nlen + 1, ATEMP); - if (vp->flag & (RJUST|LJUST)) { - int slen; - - if (vp->flag & RJUST) { - const char *q = s + olen; - /* strip trailing spaces (at&t ksh uses q[-1] == ' ') */ - while (q > s && isspace(q[-1])) - --q; - slen = q - s; - if (slen > vp->u2.field) { - s += slen - vp->u2.field; - slen = vp->u2.field; - } - shf_snprintf(p, nlen + 1, - ((vp->flag & ZEROFIL) && digit(*s)) ? - "%0*s%.*s" : "%*s%.*s", - vp->u2.field - slen, null, slen, s); - } else { - /* strip leading spaces/zeros */ - while (isspace(*s)) - s++; - if (vp->flag & ZEROFIL) - while (*s == '0') - s++; - shf_snprintf(p, nlen + 1, "%-*.*s", - vp->u2.field, vp->u2.field, s); - } - } else - memcpy(p, s, olen + 1); - - if (vp->flag & UCASEV_AL) { - for (q = p; *q; q++) - if (islower(*q)) - *q = toupper(*q); - } else if (vp->flag & LCASEV) { - for (q = p; *q; q++) - if (isupper(*q)) - *q = tolower(*q); - } - - return p; -} - -/* - * make vp->val.s be "name=value" for quick exporting. - */ -static void -export(struct tbl *vp, const char *val) -{ - char *xp; - char *op = (vp->flag&ALLOC) ? vp->val.s : NULL; - int namelen = strlen(vp->name); - int vallen = strlen(val) + 1; - - vp->flag |= ALLOC; - xp = (char*)alloc(namelen + 1 + vallen, vp->areap); - memcpy(vp->val.s = xp, vp->name, namelen); - xp += namelen; - *xp++ = '='; - vp->type = xp - vp->val.s; /* offset to value */ - memcpy(xp, val, vallen); - if (op != NULL) - afree((void*)op, vp->areap); -} - -/* - * lookup variable (according to (set&LOCAL)), - * set its attributes (INTEGER, RDONLY, EXPORT, TRACE, LJUST, RJUST, ZEROFIL, - * LCASEV, UCASEV_AL), and optionally set its value if an assignment. - */ -struct tbl * -typeset(const char *var, Tflag set, Tflag clr, int field, int base) -{ - struct tbl *vp; - struct tbl *vpbase, *t; - char *tvar; - const char *val; - - /* check for valid variable name, search for value */ - val = skip_varname(var, false); - if (val == var) - return NULL; - if (*val == '[') { - int len; - - len = array_ref_len(val); - if (len == 0) - return NULL; - /* IMPORT is only used when the shell starts up and is - * setting up its environment. Allow only simple array - * references at this time since parameter/command substitution - * is preformed on the [expression], which would be a major - * security hole. - */ - if (set & IMPORT) { - int i; - for (i = 1; i < len - 1; i++) - if (!digit(val[i])) - return NULL; - } - val += len; - } - if (*val == '=') - tvar = str_nsave(var, val++ - var, ATEMP); - else { - /* Importing from original environment: must have an = */ - if (set & IMPORT) - return NULL; - tvar = (char *) var; - val = NULL; - } - - /* Prevent typeset from creating a local PATH/ENV/SHELL */ - if (Flag(FRESTRICTED) && (strcmp(tvar, "PATH") == 0 - || strcmp(tvar, "ENV") == 0 - || strcmp(tvar, "SHELL") == 0)) - errorf("%s: restricted", tvar); - - vp = (set&LOCAL) ? local(tvar, (set & LOCAL_COPY) ? true : false) - : global(tvar); - set &= ~(LOCAL|LOCAL_COPY); - - vpbase = (vp->flag & ARRAY) ? global(arrayname(var)) : vp; - - /* only allow export flag to be set. at&t ksh allows any attribute to - * be changed, which means it can be truncated or modified - * (-L/-R/-Z/-i). - */ - if ((vpbase->flag&RDONLY) - && (val || clr || (set & ~EXPORT))) - /* XXX check calls - is error here ok by POSIX? */ - errorf("%s: is read only", tvar); - if (val) - afree(tvar, ATEMP); - - /* most calls are with set/clr == 0 */ - if (set | clr) { - int ok = 1; - /* XXX if x[0] isn't set, there will be problems: need to have - * one copy of attributes for arrays... - */ - for (t = vpbase; t; t = t->u.array) { - int fake_assign; - char UNINITIALIZED(*s); - char UNINITIALIZED(*free_me); - - fake_assign = (t->flag & ISSET) && (!val || t != vp) - && ((set & (UCASEV_AL|LCASEV|LJUST|RJUST|ZEROFIL)) - || ((t->flag & INTEGER) && (clr & INTEGER)) - || (!(t->flag & INTEGER) && (set & INTEGER))); - if (fake_assign) { - if (t->flag & INTEGER) { - s = str_val(t); - free_me = NULL; - } else { - s = t->val.s + t->type; - free_me = (t->flag & ALLOC) ? t->val.s - : NULL; - } - t->flag &= ~ALLOC; - } - if (!(t->flag & INTEGER) && (set & INTEGER)) { - t->type = 0; - t->flag &= ~ALLOC; - } - t->flag = (t->flag | set) & ~clr; - /* Don't change base if assignment is to be done, - * in case assignment fails. - */ - if ((set & INTEGER) && base > 0 && (!val || t != vp)) - t->type = base; - if (set & (LJUST|RJUST|ZEROFIL)) - t->u2.field = field; - if (fake_assign) { - if (!setstr(t, s, KSH_RETURN_ERROR)) { - /* Somewhat arbitrary action here: - * zap contents of variable, but keep - * the flag settings. - */ - ok = 0; - if (t->flag & INTEGER) - t->flag &= ~ISSET; - else { - if (t->flag & ALLOC) - afree((void*) t->val.s, - t->areap); - t->flag &= ~(ISSET|ALLOC); - t->type = 0; - } - } - if (free_me) - afree((void *) free_me, t->areap); - } - } - if (!ok) - errorf(null); - } - - if (val != NULL) { - if (vp->flag&INTEGER) { - /* do not zero base before assignment */ - setstr(vp, val, KSH_UNWIND_ERROR | 0x4); - /* Done after assignment to override default */ - if (base > 0) - vp->type = base; - } else - /* setstr can't fail (readonly check already done) */ - setstr(vp, val, KSH_RETURN_ERROR | 0x4); - } - - /* only x[0] is ever exported, so use vpbase */ - if ((vpbase->flag&EXPORT) && !(vpbase->flag&INTEGER) - && vpbase->type == 0) - export(vpbase, (vpbase->flag&ISSET) ? vpbase->val.s : null); - - return vp; -} - -/* Unset a variable. array_ref is set if there was an array reference in - * the name lookup (eg, x[2]). - */ -void -unset(struct tbl *vp, int array_ref) -{ - if (vp->flag & ALLOC) - afree((void*)vp->val.s, vp->areap); - if ((vp->flag & ARRAY) && !array_ref) { - struct tbl *a, *tmp; - - /* Free up entire array */ - for (a = vp->u.array; a; ) { - tmp = a; - a = a->u.array; - if (tmp->flag & ALLOC) - afree((void *) tmp->val.s, tmp->areap); - afree(tmp, tmp->areap); - } - vp->u.array = NULL; - } - /* If foo[0] is being unset, the remainder of the array is kept... */ - vp->flag &= SPECIAL | (array_ref ? ARRAY|DEFINED : 0); - if (vp->flag & SPECIAL) - unsetspec(vp); /* responsible for 'unspecial'ing var */ -} - -/* return a pointer to the first char past a legal variable name (returns the - * argument if there is no legal name, returns * a pointer to the terminating - * null if whole string is legal). - */ -char * -skip_varname(const char *s, int aok) -{ - int alen; - - if (s && letter(*s)) { - while (*++s && letnum(*s)) - ; - if (aok && *s == '[' && (alen = array_ref_len(s))) - s += alen; - } - return (char *) s; -} - -/* Return a pointer to the first character past any legal variable name. */ -char * -skip_wdvarname(const char *s, int aok) - - /* skip array de-reference? */ -{ - if (s[0] == CHAR && letter(s[1])) { - do - s += 2; - while (s[0] == CHAR && letnum(s[1])); - if (aok && s[0] == CHAR && s[1] == '[') { - /* skip possible array de-reference */ - const char *p = s; - char c; - int depth = 0; - - while (1) { - if (p[0] != CHAR) - break; - c = p[1]; - p += 2; - if (c == '[') - depth++; - else if (c == ']' && --depth == 0) { - s = p; - break; - } - } - } - } - return (char *) s; -} - -/* Check if coded string s is a variable name */ -int -is_wdvarname(const char *s, int aok) -{ - char *p = skip_wdvarname(s, aok); - - return p != s && p[0] == EOS; -} - -/* Check if coded string s is a variable assignment */ -int -is_wdvarassign(const char *s) -{ - char *p = skip_wdvarname(s, true); - - return p != s && p[0] == CHAR && p[1] == '='; -} - -/* - * Make the exported environment from the exported names in the dictionary. - */ -char ** -makenv(void) -{ - struct block *l = e->loc; - XPtrV env; - struct tbl *vp, **vpp; - int i; - - XPinit(env, 64); - for (l = e->loc; l != NULL; l = l->next) - for (vpp = l->vars.tbls, i = l->vars.size; --i >= 0; ) - if ((vp = *vpp++) != NULL - && (vp->flag&(ISSET|EXPORT)) == (ISSET|EXPORT)) { - struct block *l2; - struct tbl *vp2; - unsigned h = hash(vp->name); - - /* unexport any redefined instances */ - for (l2 = l->next; l2 != NULL; l2 = l2->next) { - vp2 = tsearch(&l2->vars, vp->name, h); - if (vp2 != NULL) - vp2->flag &= ~EXPORT; - } - if ((vp->flag&INTEGER)) { - /* integer to string */ - char *val; - val = str_val(vp); - vp->flag &= ~(INTEGER|RDONLY); - /* setstr can't fail here */ - setstr(vp, val, KSH_RETURN_ERROR); - } - XPput(env, vp->val.s); - } - XPput(env, NULL); - return (char **) XPclose(env); -} - -/* - * Called after a fork in parent to bump the random number generator. - */ -void -change_random(void) -{ - rnd_seed(time(NULL) * getpid()); -} - -/* - * handle special variables with side effects - PATH, SECONDS. - */ - -/* Test if name is a special parameter */ -static int -special(const char *name) -{ - struct tbl *tp; - - tp = tsearch(&specials, name, hash(name)); - return tp && (tp->flag & ISSET) ? tp->type : V_NONE; -} - -/* Make a variable non-special */ -static void -unspecial(const char *name) -{ - struct tbl *tp; - - tp = tsearch(&specials, name, hash(name)); - if (tp) - tdelete(tp); -} - -static time_t seconds; /* time SECONDS last set */ -static int user_lineno; /* what user set $LINENO to */ - -static void -getspec(struct tbl *vp) -{ - switch (special(vp->name)) { - case V_SECONDS: - vp->flag &= ~SPECIAL; - /* On start up the value of SECONDS is used before seconds - * has been set - don't do anything in this case - * (see initcoms[] in main.c). - */ - if (vp->flag & ISSET) - setint(vp, (long) (time(NULL) - seconds)); - vp->flag |= SPECIAL; - break; - case V_RANDOM: - vp->flag &= ~SPECIAL; - setint(vp, rnd_get()); - vp->flag |= SPECIAL; - break; - case V_HISTSIZE: - vp->flag &= ~SPECIAL; - setint(vp, (long) histsize); - vp->flag |= SPECIAL; - break; - case V_OPTIND: - vp->flag &= ~SPECIAL; - setint(vp, (long) user_opt.uoptind); - vp->flag |= SPECIAL; - break; - case V_LINENO: - vp->flag &= ~SPECIAL; - setint(vp, (long) current_lineno + user_lineno); - vp->flag |= SPECIAL; - break; - case V_PGRP: -#ifdef BSD_PGRP -#define getpgID() getpgrp(0) -#else -#define getpgID() getpgrp() -#endif - vp->flag &= ~SPECIAL; - setint(vp, getpgID()); - vp->flag |= SPECIAL; - break; - } -} - -static void -setspec(struct tbl *vp) -{ - char *s; - - switch (special(vp->name)) { - case V_PATH: - if (path) - afree(path, APERM); - path = str_save(str_val(vp), APERM); - flushcom(1); /* clear tracked aliases */ - break; - case V_IFS: - setctypes(s = str_val(vp), C_IFS); - ifs0 = *s; - break; - case V_OPTIND: - vp->flag &= ~SPECIAL; - getopts_reset((int) intval(vp)); - vp->flag |= SPECIAL; - break; - case V_POSIXLY_CORRECT: - change_flag(FPOSIX, OF_SPECIAL, 1); - break; - case V_TMPDIR: - if (tmpdir) { - afree(tmpdir, APERM); - tmpdir = NULL; - } - /* Use tmpdir iff it is an absolute path, is writable and - * searchable and is a directory... - */ - { - struct stat statb; - s = str_val(vp); - if (ISABSPATH(s) && eaccess(s, W_OK|X_OK) == 0 - && stat(s, &statb) == 0 && S_ISDIR(statb.st_mode)) - tmpdir = str_save(s, APERM); - } - break; - case V_HISTSIZE: - vp->flag &= ~SPECIAL; - sethistsize((int) intval(vp)); - vp->flag |= SPECIAL; - break; - case V_HISTFILE: - sethistfile(str_val(vp)); - break; - case V_VISUAL: - set_editmode(str_val(vp)); - break; - case V_EDITOR: - if (!(global("VISUAL")->flag & ISSET)) - set_editmode(str_val(vp)); - break; - case V_COLUMNS: - if ((x_cols = intval(vp)) <= MIN_COLS) - x_cols = MIN_COLS; - break; - case V_RANDOM: - vp->flag &= ~SPECIAL; - rnd_put(intval(vp)); - vp->flag |= SPECIAL; - break; - case V_SECONDS: - vp->flag &= ~SPECIAL; - seconds = time(NULL) - intval(vp); - vp->flag |= SPECIAL; - break; - case V_TMOUT: - /* at&t ksh seems to do this (only listen if integer) */ - if (vp->flag & INTEGER) - ksh_tmout = vp->val.i >= 0 ? vp->val.i : 0; - break; - case V_LINENO: - vp->flag &= ~SPECIAL; - /* The -1 is because line numbering starts at 1. */ - user_lineno = (unsigned int) intval(vp) - current_lineno - 1; - vp->flag |= SPECIAL; - break; - } -} - -static void -unsetspec(struct tbl *vp) -{ - switch (special(vp->name)) { - case V_PATH: - if (path) - afree(path, APERM); - path = str_save(def_path, APERM); - flushcom(1); /* clear tracked aliases */ - break; - case V_IFS: - setctypes(" \t\n", C_IFS); - ifs0 = ' '; - break; - case V_TMPDIR: - /* should not become unspecial */ - if (tmpdir) { - afree(tmpdir, APERM); - tmpdir = NULL; - } - break; - case V_LINENO: - case V_RANDOM: - case V_SECONDS: - case V_TMOUT: /* at&t ksh leaves previous value in place */ - unspecial(vp->name); - break; - - /* at&t ksh man page says OPTIND, OPTARG and _ lose special meaning, - * but OPTARG does not (still set by getopts) and _ is also still - * set in various places. - * Don't know what at&t does for: - * HISTSIZE, HISTFILE, - * Unsetting these in at&t ksh does not loose the 'specialness': - * no effect: IFS, COLUMNS, PATH, TMPDIR, - * VISUAL, EDITOR, - * pdkshisms: no effect: - * POSIXLY_CORRECT (use set +o posix instead) - */ - } -} - -/* - * Search for (and possibly create) a table entry starting with - * vp, indexed by val. - */ -static struct tbl * -arraysearch(struct tbl *vp, int val) -{ - struct tbl *prev, *curr, *new; - size_t namelen = strlen(vp->name) + 1; - - vp->flag |= ARRAY|DEFINED; - - /* The table entry is always [0] */ - if (val == 0) { - vp->index = 0; - return vp; - } - prev = vp; - curr = vp->u.array; - while (curr && curr->index < val) { - prev = curr; - curr = curr->u.array; - } - if (curr && curr->index == val) { - if (curr->flag&ISSET) - return curr; - else - new = curr; - } else - new = (struct tbl *)alloc(sizeof(struct tbl) + namelen, - vp->areap); - strlcpy(new->name, vp->name, namelen); - new->flag = vp->flag & ~(ALLOC|DEFINED|ISSET|SPECIAL); - new->type = vp->type; - new->areap = vp->areap; - new->u2.field = vp->u2.field; - new->index = val; - if (curr != new) { /* not reusing old array entry */ - prev->u.array = new; - new->u.array = curr; - } - return new; -} - -/* Return the length of an array reference (eg, [1+2]) - cp is assumed - * to point to the open bracket. Returns 0 if there is no matching closing - * bracket. - */ -int -array_ref_len(const char *cp) -{ - const char *s = cp; - int c; - int depth = 0; - - while ((c = *s++) && (c != ']' || --depth)) - if (c == '[') - depth++; - if (!c) - return 0; - return s - cp; -} - -/* - * Make a copy of the base of an array name - */ -char * -arrayname(const char *str) -{ - const char *p; - - if ((p = strchr(str, '[')) == 0) - /* Shouldn't happen, but why worry? */ - return (char *) str; - - return str_nsave(str, p - str, ATEMP); -} - -/* Set (or overwrite, if !reset) the array variable var to the values in vals. - */ -void -set_array(const char *var, int reset, char **vals) -{ - struct tbl *vp, *vq; - int i; - - /* to get local array, use "typeset foo; set -A foo" */ - vp = global(var); - - /* Note: at&t ksh allows set -A but not set +A of a read-only var */ - if ((vp->flag&RDONLY)) - errorf("%s: is read only", var); - /* This code is quite non-optimal */ - if (reset > 0) - /* trash existing values and attributes */ - unset(vp, 0); - /* todo: would be nice for assignment to completely succeed or - * completely fail. Only really effects integer arrays: - * evaluation of some of vals[] may fail... - */ - for (i = 0; vals[i]; i++) { - vq = arraysearch(vp, i); - /* would be nice to deal with errors here... (see above) */ - setstr(vq, vals[i], KSH_RETURN_ERROR); - } -} diff --git a/vi.c b/vi.c deleted file mode 100644 index e915585..0000000 --- a/vi.c +++ /dev/null @@ -1,2114 +0,0 @@ -/** $MirOS$ */ -/* $OpenBSD: vi.c,v 1.13 2004/05/10 16:28:47 pvalchev Exp $ */ - -/* - * vi command editing - * written by John Rochester (initially for nsh) - * bludgeoned to fit pdksh by Larry Bouzane, Jeff Sparkes & Eric Gisin - */ - -#include "config.h" - -#include "sh.h" -#include -#include "ksh_stat.h" /* completion */ -#include "edit.h" - -__RCSID("$MirOS$"); - -#define Ctrl(c) (c&0x1f) -#define is_wordch(c) (letnum(c)) - -struct edstate { - int winleft; - char *cbuf; - int cbufsize; - int linelen; - int cursor; -}; - - -static int vi_hook(int ch); -static void vi_reset(char *buf, size_t len); -static int nextstate(int ch); -static int vi_insert(int ch); -static int vi_cmd(int argcnt, const char *cmd); -static int domove(int argcnt, const char *cmd, int sub); -static int redo_insert(int count); -static void yank_range(int a, int b); -static int bracktype(int ch); -static void save_cbuf(void); -static void restore_cbuf(void); -static void edit_reset(char *buf, size_t len); -static int putbuf(const char *buf, int len, int repl); -static void del_range(int a, int b); -static int findch(int ch, int cnt, int forw, int incl); -static int forwword(int argcnt); -static int backword(int argcnt); -static int endword(int argcnt); -static int Forwword(int argcnt); -static int Backword(int argcnt); -static int Endword(int argcnt); -static int grabhist(int save, int n); -static int grabsearch(int save, int start, int fwd, char *pat); -static void redraw_line(int newline); -static void refresh(int leftside); -static int outofwin(void); -static void rewindow(void); -static int newcol(int ch, int col); -static void display(char *wb1, char *wb2, int leftside); -static void ed_mov_opt(int col, char *wb); -static int expand_word(int command); -static int complete_word(int command, int count); -static int print_expansions(struct edstate *e, int command); -static int char_len(int c); -static void x_vi_zotc(int c); -static void vi_pprompt(int full); -static void vi_error(void); -static void vi_macro_reset(void); -static int x_vi_putbuf(const char *s, size_t len); - -#define C_ 0x1 /* a valid command that isn't a M_, E_, U_ */ -#define M_ 0x2 /* movement command (h, l, etc.) */ -#define E_ 0x4 /* extended command (c, d, y) */ -#define X_ 0x8 /* long command (@, f, F, t, T, etc.) */ -#define U_ 0x10 /* an UN-undoable command (that isn't a M_) */ -#define B_ 0x20 /* bad command (^@) */ -#define Z_ 0x40 /* repeat count defaults to 0 (not 1) */ -#define S_ 0x80 /* search (/, ?) */ - -#define is_bad(c) (classify[(c)&0x7f]&B_) -#define is_cmd(c) (classify[(c)&0x7f]&(M_|E_|C_|U_)) -#define is_move(c) (classify[(c)&0x7f]&M_) -#define is_extend(c) (classify[(c)&0x7f]&E_) -#define is_long(c) (classify[(c)&0x7f]&X_) -#define is_undoable(c) (!(classify[(c)&0x7f]&U_)) -#define is_srch(c) (classify[(c)&0x7f]&S_) -#define is_zerocount(c) (classify[(c)&0x7f]&Z_) - -const unsigned char classify[128] = { - /* 0 1 2 3 4 5 6 7 */ - /* 0 ^@ ^A ^B ^C ^D ^E ^F ^G */ - B_, 0, 0, 0, 0, C_|U_, C_|Z_, 0, - /* 01 ^H ^I ^J ^K ^L ^M ^N ^O */ - M_, C_|Z_, 0, 0, C_|U_, 0, C_, 0, - /* 02 ^P ^Q ^R ^S ^T ^U ^V ^W */ - C_, 0, C_|U_, 0, 0, 0, C_, 0, - /* 03 ^X ^Y ^Z ^[ ^\ ^] ^^ ^_ */ - C_, 0, 0, C_|Z_, 0, 0, 0, 0, - /* 04 ! " # $ % & ' */ - M_, 0, 0, C_, M_, M_, 0, 0, - /* 05 ( ) * + , - . / */ - 0, 0, C_, C_, M_, C_, 0, C_|S_, - /* 06 0 1 2 3 4 5 6 7 */ - M_, 0, 0, 0, 0, 0, 0, 0, - /* 07 8 9 : ; < = > ? */ - 0, 0, 0, M_, 0, C_, 0, C_|S_, - /* 010 @ A B C D E F G */ - C_|X_, C_, M_, C_, C_, M_, M_|X_, C_|U_|Z_, - /* 011 H I J K L M N O */ - 0, C_, 0, 0, 0, 0, C_|U_, 0, - /* 012 P Q R S T U V W */ - C_, 0, C_, C_, M_|X_, C_, 0, M_, - /* 013 X Y Z [ \ ] ^ _ */ - C_, C_|U_, 0, 0, C_|Z_, 0, M_, C_|Z_, - /* 014 ` a b c d e f g */ - 0, C_, M_, E_, E_, M_, M_|X_, C_|Z_, - /* 015 h i j k l m n o */ - M_, C_, C_|U_, C_|U_, M_, 0, C_|U_, 0, - /* 016 p q r s t u v w */ - C_, 0, X_, C_, M_|X_, C_|U_, C_|U_|Z_,M_, - /* 017 x y z { | } ~ ^? */ - C_, E_|U_, 0, 0, M_|Z_, 0, C_, 0 -}; - -#define MAXVICMD 3 -#define SRCHLEN 40 - -#define INSERT 1 -#define REPLACE 2 - -#define VNORMAL 0 /* command, insert or replace mode */ -#define VARG1 1 /* digit prefix (first, eg, 5l) */ -#define VEXTCMD 2 /* cmd + movement (eg, cl) */ -#define VARG2 3 /* digit prefix (second, eg, 2c3l) */ -#define VXCH 4 /* f, F, t, T, @ */ -#define VFAIL 5 /* bad command */ -#define VCMD 6 /* single char command (eg, X) */ -#define VREDO 7 /* . */ -#define VLIT 8 /* ^V */ -#define VSEARCH 9 /* /, ? */ -#define VVERSION 10 /* ^V */ - -static char undocbuf[LINE]; - -static struct edstate *save_edstate(struct edstate *old); -static void restore_edstate(struct edstate *old, struct edstate *new); -static void free_edstate(struct edstate *old); - -static struct edstate ebuf; -static struct edstate undobuf = { 0, undocbuf, LINE, 0, 0 }; - -static struct edstate *es; /* current editor state */ -static struct edstate *undo; - -static char ibuf[LINE]; /* input buffer */ -static int first_insert; /* set when starting in insert mode */ -static int saved_inslen; /* saved inslen for first insert */ -static int inslen; /* length of input buffer */ -static int srchlen; /* length of current search pattern */ -static char ybuf[LINE]; /* yank buffer */ -static int yanklen; /* length of yank buffer */ -static int fsavecmd = ' '; /* last find command */ -static int fsavech; /* character to find */ -static char lastcmd[MAXVICMD]; /* last non-move command */ -static int lastac; /* argcnt for lastcmd */ -static int lastsearch = ' '; /* last search command */ -static char srchpat[SRCHLEN]; /* last search pattern */ -static int insert; /* non-zero in insert mode */ -static int hnum; /* position in history */ -static int ohnum; /* history line copied (after mod) */ -static int hlast; /* 1 past last position in history */ -static int modified; /* buffer has been "modified" */ -static int state; - -/* Information for keeping track of macros that are being expanded. - * The format of buf is the alias contents followed by a null byte followed - * by the name (letter) of the alias. The end of the buffer is marked by - * a double null. The name of the alias is stored so recursive macros can - * be detected. - */ -struct macro_state { - unsigned char *p; /* current position in buf */ - unsigned char *buf; /* pointer to macro(s) being expanded */ - int len; /* how much data in buffer */ -}; -static struct macro_state macro; - -enum expand_mode { NONE, EXPAND, COMPLETE, PRINT }; -static enum expand_mode expanded = NONE;/* last input was expanded */ - -int -x_vi(char *buf, size_t len) -{ - int c; - - vi_reset(buf, len > LINE ? LINE : len); - vi_pprompt(1); - x_flush(); - while (1) { - if (macro.p) { - c = *macro.p++; - /* end of current macro? */ - if (!c) { - /* more macros left to finish? */ - if (*macro.p++) - continue; - /* must be the end of all the macros */ - vi_macro_reset(); - c = x_getc(); - } - } else { - c = x_getc(); - } - if (c == -1) - break; - if (state != VLIT) { - if (c == edchars.intr || c == edchars.quit) { - /* pretend we got an interrupt */ - x_vi_zotc(c); - x_flush(); - trapsig(c == edchars.intr ? SIGINT : SIGQUIT); - x_mode(false); - unwind(LSHELL); - } else if (c == edchars.eof && state != VVERSION) { - if (es->linelen == 0) { - x_vi_zotc(edchars.eof); - c = -1; - break; - } - continue; - } - } - if (vi_hook(c)) - break; - x_flush(); - } - - x_putc('\r'); x_putc('\n'); x_flush(); - - if (c == -1 || len <= (size_t)es->linelen) - return -1; - - if (es->cbuf != buf) - memmove(buf, es->cbuf, es->linelen); - - buf[es->linelen++] = '\n'; - - return es->linelen; -} - -static int -vi_hook(int ch) -{ - static char curcmd[MAXVICMD]; - static char locpat[SRCHLEN]; - static int cmdlen; - static int argc1, argc2; - - switch (state) { - - case VNORMAL: - if (insert != 0) { - if (ch == Ctrl('v')) { - state = VLIT; - ch = '^'; - } - switch (vi_insert(ch)) { - case -1: - vi_error(); - state = VNORMAL; - break; - case 0: - if (state == VLIT) { - es->cursor--; - refresh(0); - } else - refresh(insert != 0); - break; - case 1: - return 1; - } - } else { - if (ch == '\r' || ch == '\n') - return 1; - cmdlen = 0; - argc1 = 0; - if (ch >= '1' && ch <= '9') { - argc1 = ch - '0'; - state = VARG1; - } else { - curcmd[cmdlen++] = ch; - state = nextstate(ch); - if (state == VSEARCH) { - save_cbuf(); - es->cursor = 0; - es->linelen = 0; - if (ch == '/') { - if (putbuf("/", 1, 0) != 0) { - return -1; - } - } else if (putbuf("?", 1, 0) != 0) - return -1; - refresh(0); - } - if (state == VVERSION) { - save_cbuf(); - es->cursor = 0; - es->linelen = 0; - putbuf(ksh_version + 4, - strlen(ksh_version + 4), 0); - refresh(0); - } - } - } - break; - - case VLIT: - if (is_bad(ch)) { - del_range(es->cursor, es->cursor + 1); - vi_error(); - } else - es->cbuf[es->cursor++] = ch; - refresh(1); - state = VNORMAL; - break; - - case VVERSION: - restore_cbuf(); - state = VNORMAL; - refresh(0); - break; - - case VARG1: - if (isdigit(ch)) - argc1 = argc1 * 10 + ch - '0'; - else { - curcmd[cmdlen++] = ch; - state = nextstate(ch); - } - break; - - case VEXTCMD: - argc2 = 0; - if (ch >= '1' && ch <= '9') { - argc2 = ch - '0'; - state = VARG2; - return 0; - } else { - curcmd[cmdlen++] = ch; - if (ch == curcmd[0]) - state = VCMD; - else if (is_move(ch)) - state = nextstate(ch); - else - state = VFAIL; - } - break; - - case VARG2: - if (isdigit(ch)) - argc2 = argc2 * 10 + ch - '0'; - else { - if (argc1 == 0) - argc1 = argc2; - else - argc1 *= argc2; - curcmd[cmdlen++] = ch; - if (ch == curcmd[0]) - state = VCMD; - else if (is_move(ch)) - state = nextstate(ch); - else - state = VFAIL; - } - break; - - case VXCH: - if (ch == Ctrl('[')) - state = VNORMAL; - else { - curcmd[cmdlen++] = ch; - state = VCMD; - } - break; - - case VSEARCH: - if (ch == '\r' || ch == '\n' /*|| ch == Ctrl('[')*/ ) { - restore_cbuf(); - /* Repeat last search? */ - if (srchlen == 0) { - if (!srchpat[0]) { - vi_error(); - state = VNORMAL; - refresh(0); - return 0; - } - } else { - locpat[srchlen] = '\0'; - (void) strlcpy(srchpat, locpat, sizeof srchpat); - } - state = VCMD; - } else if (ch == edchars.erase || ch == Ctrl('h')) { - if (srchlen != 0) { - srchlen--; - es->linelen -= char_len((unsigned char) locpat[srchlen]); - es->cursor = es->linelen; - refresh(0); - return 0; - } - restore_cbuf(); - state = VNORMAL; - refresh(0); - } else if (ch == edchars.kill) { - srchlen = 0; - es->linelen = 1; - es->cursor = 1; - refresh(0); - return 0; - } else if (ch == edchars.werase) { - int i; - int n = srchlen; - - while (n > 0 && isspace(locpat[n - 1])) - n--; - while (n > 0 && !isspace(locpat[n - 1])) - n--; - for (i = srchlen; --i >= n; ) - es->linelen -= char_len((unsigned char) locpat[i]); - srchlen = n; - es->cursor = es->linelen; - refresh(0); - return 0; - } else { - if (srchlen == SRCHLEN - 1) - vi_error(); - else { - locpat[srchlen++] = ch; - if ((ch & 0x80) && Flag(FVISHOW8)) { - if (es->linelen + 2 > es->cbufsize) - vi_error(); - es->cbuf[es->linelen++] = 'M'; - es->cbuf[es->linelen++] = '-'; - ch &= 0x7f; - } - if (ch < ' ' || ch == 0x7f) { - if (es->linelen + 2 > es->cbufsize) - vi_error(); - es->cbuf[es->linelen++] = '^'; - es->cbuf[es->linelen++] = ch ^ '@'; - } else { - if (es->linelen >= es->cbufsize) - vi_error(); - es->cbuf[es->linelen++] = ch; - } - es->cursor = es->linelen; - refresh(0); - } - return 0; - } - break; - } - - switch (state) { - case VCMD: - state = VNORMAL; - switch (vi_cmd(argc1, curcmd)) { - case -1: - vi_error(); - refresh(0); - break; - case 0: - if (insert != 0) - inslen = 0; - refresh(insert != 0); - break; - case 1: - refresh(0); - return 1; - case 2: - /* back from a 'v' command - don't redraw the screen */ - return 1; - } - break; - - case VREDO: - state = VNORMAL; - if (argc1 != 0) - lastac = argc1; - switch (vi_cmd(lastac, lastcmd)) { - case -1: - vi_error(); - refresh(0); - break; - case 0: - if (insert != 0) { - if (lastcmd[0] == 's' || lastcmd[0] == 'c' || - lastcmd[0] == 'C') { - if (redo_insert(1) != 0) - vi_error(); - } else { - if (redo_insert(lastac) != 0) - vi_error(); - } - } - refresh(0); - break; - case 1: - refresh(0); - return 1; - case 2: - /* back from a 'v' command - can't happen */ - break; - } - break; - - case VFAIL: - state = VNORMAL; - vi_error(); - break; - } - return 0; -} - -static void -vi_reset(char *buf, size_t len) -{ - state = VNORMAL; - ohnum = hnum = hlast = histnum(-1) + 1; - insert = INSERT; - saved_inslen = inslen; - first_insert = 1; - inslen = 0; - modified = 1; - vi_macro_reset(); - edit_reset(buf, len); -} - -static int -nextstate(int ch) -{ - if (is_extend(ch)) - return VEXTCMD; - else if (is_srch(ch)) - return VSEARCH; - else if (is_long(ch)) - return VXCH; - else if (ch == '.') - return VREDO; - else if (ch == Ctrl('v')) - return VVERSION; - else if (is_cmd(ch)) - return VCMD; - else - return VFAIL; -} - -static int -vi_insert(int ch) -{ - int tcursor; - - if (ch == edchars.erase || ch == Ctrl('h')) { - if (insert == REPLACE) { - if (es->cursor == undo->cursor) { - vi_error(); - return 0; - } - if (inslen > 0) - inslen--; - es->cursor--; - if (es->cursor >= undo->linelen) - es->linelen--; - else - es->cbuf[es->cursor] = undo->cbuf[es->cursor]; - } else { - if (es->cursor == 0) { - /* x_putc(BEL); no annoying bell here */ - return 0; - } - if (inslen > 0) - inslen--; - es->cursor--; - es->linelen--; - memmove(&es->cbuf[es->cursor], &es->cbuf[es->cursor+1], - es->linelen - es->cursor + 1); - } - expanded = NONE; - return 0; - } - if (ch == edchars.kill) { - if (es->cursor != 0) { - inslen = 0; - memmove(es->cbuf, &es->cbuf[es->cursor], - es->linelen - es->cursor); - es->linelen -= es->cursor; - es->cursor = 0; - } - expanded = NONE; - return 0; - } - if (ch == edchars.werase) { - if (es->cursor != 0) { - tcursor = Backword(1); - memmove(&es->cbuf[tcursor], &es->cbuf[es->cursor], - es->linelen - es->cursor); - es->linelen -= es->cursor - tcursor; - if (inslen < es->cursor - tcursor) - inslen = 0; - else - inslen -= es->cursor - tcursor; - es->cursor = tcursor; - } - expanded = NONE; - return 0; - } - /* If any chars are entered before escape, trash the saved insert - * buffer (if user inserts & deletes char, ibuf gets trashed and - * we don't want to use it) - */ - if (first_insert && ch != Ctrl('[')) - saved_inslen = 0; - switch (ch) { - - case '\0': - return -1; - - case '\r': - case '\n': - return 1; - - case Ctrl('['): - expanded = NONE; - if (first_insert) { - first_insert = 0; - if (inslen == 0) { - inslen = saved_inslen; - return redo_insert(0); - } - lastcmd[0] = 'a'; - lastac = 1; - } - if (lastcmd[0] == 's' || lastcmd[0] == 'c' || - lastcmd[0] == 'C') - return redo_insert(0); - else - return redo_insert(lastac - 1); - - /* { Begin nonstandard vi commands */ - case Ctrl('x'): - expand_word(0); - break; - - case Ctrl('f'): - complete_word(0, 0); - break; - - case Ctrl('e'): - print_expansions(es, 0); - break; - - case Ctrl('i'): - if (Flag(FVITABCOMPLETE)) { - complete_word(0, 0); - break; - } - /* FALLTHROUGH */ - /* End nonstandard vi commands } */ - - default: - if (es->linelen >= es->cbufsize - 1) - return -1; - ibuf[inslen++] = ch; - if (insert == INSERT) { - memmove(&es->cbuf[es->cursor+1], &es->cbuf[es->cursor], - es->linelen - es->cursor); - es->linelen++; - } - es->cbuf[es->cursor++] = ch; - if (insert == REPLACE && es->cursor > es->linelen) - es->linelen++; - expanded = NONE; - } - return 0; -} - -static int -vi_cmd(int argcnt, const char *cmd) -{ - int ncursor; - int cur, c1, c2, c3 = 0; - int any; - struct edstate *t; - - if (argcnt == 0 && !is_zerocount(*cmd)) - argcnt = 1; - - if (is_move(*cmd)) { - if ((cur = domove(argcnt, cmd, 0)) >= 0) { - if (cur == es->linelen && cur != 0) - cur--; - es->cursor = cur; - } else - return -1; - } else { - /* Don't save state in middle of macro.. */ - if (is_undoable(*cmd) && !macro.p) { - undo->winleft = es->winleft; - memmove(undo->cbuf, es->cbuf, es->linelen); - undo->linelen = es->linelen; - undo->cursor = es->cursor; - lastac = argcnt; - memmove(lastcmd, cmd, MAXVICMD); - } - switch (*cmd) { - - case Ctrl('l'): - case Ctrl('r'): - redraw_line(1); - break; - - case '@': - { - static char alias[] = "_\0"; - struct tbl *ap; - int olen, nlen; - char *p, *nbuf; - - /* lookup letter in alias list... */ - alias[1] = cmd[1]; - ap = tsearch(&aliases, alias, hash(alias)); - if (!cmd[1] || !ap || !(ap->flag & ISSET)) - return -1; - /* check if this is a recursive call... */ - if ((p = (char *) macro.p)) - while ((p = strchr(p, '\0')) && p[1]) - if (*++p == cmd[1]) - return -1; - /* insert alias into macro buffer */ - nlen = strlen(ap->val.s) + 1; - olen = !macro.p ? 2 - : macro.len - (macro.p - macro.buf); - nbuf = alloc(nlen + 1 + olen, APERM); - memcpy(nbuf, ap->val.s, nlen); - nbuf[nlen++] = cmd[1]; - if (macro.p) { - memcpy(nbuf + nlen, macro.p, olen); - afree(macro.buf, APERM); - nlen += olen; - } else { - nbuf[nlen++] = '\0'; - nbuf[nlen++] = '\0'; - } - macro.p = macro.buf = (unsigned char *) nbuf; - macro.len = nlen; - } - break; - - case 'a': - modified = 1; hnum = hlast; - if (es->linelen != 0) - es->cursor++; - insert = INSERT; - break; - - case 'A': - modified = 1; hnum = hlast; - del_range(0, 0); - es->cursor = es->linelen; - insert = INSERT; - break; - - case 'S': - es->cursor = domove(1, "^", 1); - del_range(es->cursor, es->linelen); - modified = 1; hnum = hlast; - insert = INSERT; - break; - - case 'Y': - cmd = "y$"; - /* ahhhhhh... */ - case 'c': - case 'd': - case 'y': - if (*cmd == cmd[1]) { - c1 = *cmd == 'c' ? domove(1, "^", 1) : 0; - c2 = es->linelen; - } else if (!is_move(cmd[1])) - return -1; - else { - if ((ncursor = domove(argcnt, &cmd[1], 1)) < 0) - return -1; - if (*cmd == 'c' && - (cmd[1]=='w' || cmd[1]=='W') && - !isspace(es->cbuf[es->cursor])) { - while (isspace(es->cbuf[--ncursor])) - ; - ncursor++; - } - if (ncursor > es->cursor) { - c1 = es->cursor; - c2 = ncursor; - } else { - c1 = ncursor; - c2 = es->cursor; - if (cmd[1] == '%') - c2++; - } - } - if (*cmd != 'c' && c1 != c2) - yank_range(c1, c2); - if (*cmd != 'y') { - del_range(c1, c2); - es->cursor = c1; - } - if (*cmd == 'c') { - modified = 1; hnum = hlast; - insert = INSERT; - } - break; - - case 'p': - modified = 1; hnum = hlast; - if (es->linelen != 0) - es->cursor++; - while (putbuf(ybuf, yanklen, 0) == 0 && --argcnt > 0) - ; - if (es->cursor != 0) - es->cursor--; - if (argcnt != 0) - return -1; - break; - - case 'P': - modified = 1; hnum = hlast; - any = 0; - while (putbuf(ybuf, yanklen, 0) == 0 && --argcnt > 0) - any = 1; - if (any && es->cursor != 0) - es->cursor--; - if (argcnt != 0) - return -1; - break; - - case 'C': - modified = 1; hnum = hlast; - del_range(es->cursor, es->linelen); - insert = INSERT; - break; - - case 'D': - yank_range(es->cursor, es->linelen); - del_range(es->cursor, es->linelen); - if (es->cursor != 0) - es->cursor--; - break; - - case 'g': - if (!argcnt) - argcnt = hlast + 1; - /* fall through */ - case 'G': - if (!argcnt) - argcnt = 1; - else - argcnt = hlast - (source->line - argcnt); - if (grabhist(modified, argcnt - 1) < 0) - return -1; - else { - modified = 0; - hnum = argcnt - 1; - } - break; - - case 'i': - modified = 1; hnum = hlast; - insert = INSERT; - break; - - case 'I': - modified = 1; hnum = hlast; - es->cursor = domove(1, "^", 1); - insert = INSERT; - break; - - case 'j': - case '+': - case Ctrl('n'): - if (grabhist(modified, hnum + argcnt) < 0) - return -1; - else { - modified = 0; - hnum += argcnt; - } - break; - - case 'k': - case '-': - case Ctrl('p'): - if (grabhist(modified, hnum - argcnt) < 0) - return -1; - else { - modified = 0; - hnum -= argcnt; - } - break; - - case 'r': - if (es->linelen == 0) - return -1; - modified = 1; hnum = hlast; - if (cmd[1] == 0) - vi_error(); - else - es->cbuf[es->cursor] = cmd[1]; - break; - - case 'R': - modified = 1; hnum = hlast; - insert = REPLACE; - break; - - case 's': - if (es->linelen == 0) - return -1; - modified = 1; hnum = hlast; - if (es->cursor + argcnt > es->linelen) - argcnt = es->linelen - es->cursor; - del_range(es->cursor, es->cursor + argcnt); - insert = INSERT; - break; - - case 'v': - if (es->linelen == 0) - return -1; - if (!argcnt) { - if (modified) { - es->cbuf[es->linelen] = '\0'; - source->line++; - histsave(source->line, es->cbuf, 1); - } else - argcnt = source->line + 1 - - (hlast - hnum); - } - shf_snprintf(es->cbuf, es->cbufsize, - argcnt ? "%s %d" : "%s", - "fc -e ${VISUAL:-${EDITOR:-vi}} --", - argcnt); - es->linelen = strlen(es->cbuf); - return 2; - - case 'x': - if (es->linelen == 0) - return -1; - modified = 1; hnum = hlast; - if (es->cursor + argcnt > es->linelen) - argcnt = es->linelen - es->cursor; - yank_range(es->cursor, es->cursor + argcnt); - del_range(es->cursor, es->cursor + argcnt); - break; - - case 'X': - if (es->cursor > 0) { - modified = 1; hnum = hlast; - if (es->cursor < argcnt) - argcnt = es->cursor; - yank_range(es->cursor - argcnt, es->cursor); - del_range(es->cursor - argcnt, es->cursor); - es->cursor -= argcnt; - } else - return -1; - break; - - case 'u': - t = es; - es = undo; - undo = t; - break; - - case 'U': - if (!modified) - return -1; - if (grabhist(modified, ohnum) < 0) - return -1; - modified = 0; - hnum = ohnum; - break; - - case '?': - if (hnum == hlast) - hnum = -1; - /* ahhh */ - case '/': - c3 = 1; - srchlen = 0; - lastsearch = *cmd; - /* fall through */ - case 'n': - case 'N': - if (lastsearch == ' ') - return -1; - if (lastsearch == '?') - c1 = 1; - else - c1 = 0; - if (*cmd == 'N') - c1 = !c1; - if ((c2 = grabsearch(modified, hnum, - c1, srchpat)) < 0) { - if (c3) { - restore_cbuf(); - refresh(0); - } - return -1; - } else { - modified = 0; - hnum = c2; - ohnum = hnum; - } - break; - case '_': { - int inspace; - char *p, *sp; - - if (histnum(-1) < 0) - return -1; - p = *histpos(); -#define issp(c) (isspace((c)) || (c) == '\n') - if (argcnt) { - while (*p && issp(*p)) - p++; - while (*p && --argcnt) { - while (*p && !issp(*p)) - p++; - while (*p && issp(*p)) - p++; - } - if (!*p) - return -1; - sp = p; - } else { - sp = p; - inspace = 0; - while (*p) { - if (issp(*p)) - inspace = 1; - else if (inspace) { - inspace = 0; - sp = p; - } - p++; - } - p = sp; - } - modified = 1; hnum = hlast; - if (es->cursor != es->linelen) - es->cursor++; - while (*p && !issp(*p)) { - argcnt++; - p++; - } - if (putbuf(space, 1, 0) != 0) - argcnt = -1; - else if (putbuf(sp, argcnt, 0) != 0) - argcnt = -1; - if (argcnt < 0) { - if (es->cursor != 0) - es->cursor--; - return -1; - } - insert = INSERT; - } - break; - - case '~': { - char *p; - int i; - - if (es->linelen == 0) - return -1; - for (i = 0; i < argcnt; i++) { - p = &es->cbuf[es->cursor]; - if (islower(*p)) { - modified = 1; hnum = hlast; - *p = toupper(*p); - } else if (isupper(*p)) { - modified = 1; hnum = hlast; - *p = tolower(*p); - } - if (es->cursor < es->linelen - 1) - es->cursor++; - } - break; - } - - case '#': - { - int ret = x_do_comment(es->cbuf, es->cbufsize, - &es->linelen); - if (ret >= 0) - es->cursor = 0; - return ret; - } - - case '=': /* at&t ksh */ - case Ctrl('e'): /* Nonstandard vi/ksh */ - print_expansions(es, 1); - break; - - - case Ctrl('i'): /* Nonstandard vi/ksh */ - if (!Flag(FVITABCOMPLETE)) - return -1; - complete_word(1, argcnt); - break; - - case Ctrl('['): /* some annoying at&t ksh's */ - if (!Flag(FVIESCCOMPLETE)) - return -1; - case '\\': /* at&t ksh */ - case Ctrl('f'): /* Nonstandard vi/ksh */ - complete_word(1, argcnt); - break; - - - case '*': /* at&t ksh */ - case Ctrl('x'): /* Nonstandard vi/ksh */ - expand_word(1); - break; - } - if (insert == 0 && es->cursor != 0 && es->cursor >= es->linelen) - es->cursor--; - } - return 0; -} - -static int -domove(int argcnt, const char *cmd, int sub) -{ - int bcount, UNINITIALIZED(i), t; - int UNINITIALIZED(ncursor); - - switch (*cmd) { - - case 'b': - if (!sub && es->cursor == 0) - return -1; - ncursor = backword(argcnt); - break; - - case 'B': - if (!sub && es->cursor == 0) - return -1; - ncursor = Backword(argcnt); - break; - - case 'e': - if (!sub && es->cursor + 1 >= es->linelen) - return -1; - ncursor = endword(argcnt); - if (sub && ncursor < es->linelen) - ncursor++; - break; - - case 'E': - if (!sub && es->cursor + 1 >= es->linelen) - return -1; - ncursor = Endword(argcnt); - if (sub && ncursor < es->linelen) - ncursor++; - break; - - case 'f': - case 'F': - case 't': - case 'T': - fsavecmd = *cmd; - fsavech = cmd[1]; - /* drop through */ - - case ',': - case ';': - if (fsavecmd == ' ') - return -1; - i = fsavecmd == 'f' || fsavecmd == 'F'; - t = fsavecmd > 'a'; - if (*cmd == ',') - t = !t; - if ((ncursor = findch(fsavech, argcnt, t, i)) < 0) - return -1; - if (sub && t) - ncursor++; - break; - - case 'h': - case Ctrl('h'): - if (!sub && es->cursor == 0) - return -1; - ncursor = es->cursor - argcnt; - if (ncursor < 0) - ncursor = 0; - break; - - case ' ': - case 'l': - if (!sub && es->cursor + 1 >= es->linelen) - return -1; - if (es->linelen != 0) { - ncursor = es->cursor + argcnt; - if (ncursor > es->linelen) - ncursor = es->linelen; - } - break; - - case 'w': - if (!sub && es->cursor + 1 >= es->linelen) - return -1; - ncursor = forwword(argcnt); - break; - - case 'W': - if (!sub && es->cursor + 1 >= es->linelen) - return -1; - ncursor = Forwword(argcnt); - break; - - case '0': - ncursor = 0; - break; - - case '^': - ncursor = 0; - while (ncursor < es->linelen - 1 && isspace(es->cbuf[ncursor])) - ncursor++; - break; - - case '|': - ncursor = argcnt; - if (ncursor > es->linelen) - ncursor = es->linelen; - if (ncursor) - ncursor--; - break; - - case '$': - if (es->linelen != 0) - ncursor = es->linelen; - else - ncursor = 0; - break; - - case '%': - ncursor = es->cursor; - while (ncursor < es->linelen && - (i = bracktype(es->cbuf[ncursor])) == 0) - ncursor++; - if (ncursor == es->linelen) - return -1; - bcount = 1; - do { - if (i > 0) { - if (++ncursor >= es->linelen) - return -1; - } else { - if (--ncursor < 0) - return -1; - } - t = bracktype(es->cbuf[ncursor]); - if (t == i) - bcount++; - else if (t == -i) - bcount--; - } while (bcount != 0); - if (sub && i > 0) - ncursor++; - break; - - default: - return -1; - } - return ncursor; -} - -static int -redo_insert(int count) -{ - while (count-- > 0) - if (putbuf(ibuf, inslen, insert==REPLACE) != 0) - return -1; - if (es->cursor > 0) - es->cursor--; - insert = 0; - return 0; -} - -static void -yank_range(int a, int b) -{ - yanklen = b - a; - if (yanklen != 0) - memmove(ybuf, &es->cbuf[a], yanklen); -} - -static int -bracktype(int ch) -{ - switch (ch) { - - case '(': - return 1; - - case '[': - return 2; - - case '{': - return 3; - - case ')': - return -1; - - case ']': - return -2; - - case '}': - return -3; - - default: - return 0; - } -} - -/* - * Non user interface editor routines below here - */ - -static int cur_col; /* current column on line */ -static int pwidth; /* width of prompt */ -static int prompt_trunc; /* how much of prompt to truncate */ -static int prompt_skip; /* how much of prompt to skip */ -static int winwidth; /* width of window */ -static char *wbuf[2]; /* window buffers */ -static int wbuf_len; /* length of window buffers (x_cols-3)*/ -static int win; /* window buffer in use */ -static char morec; /* more character at right of window */ -static int lastref; /* argument to last refresh() */ -static char holdbuf[LINE]; /* place to hold last edit buffer */ -static int holdlen; /* length of holdbuf */ - -static void -save_cbuf(void) -{ - memmove(holdbuf, es->cbuf, es->linelen); - holdlen = es->linelen; - holdbuf[holdlen] = '\0'; -} - -static void -restore_cbuf(void) -{ - es->cursor = 0; - es->linelen = holdlen; - memmove(es->cbuf, holdbuf, holdlen); -} - -/* return a new edstate */ -static struct edstate * -save_edstate(struct edstate *old) -{ - struct edstate *new; - - new = (struct edstate *)alloc(sizeof(struct edstate), APERM); - new->cbuf = alloc(old->cbufsize, APERM); - memcpy(new->cbuf, old->cbuf, old->linelen); - new->cbufsize = old->cbufsize; - new->linelen = old->linelen; - new->cursor = old->cursor; - new->winleft = old->winleft; - return new; -} - -static void -restore_edstate(struct edstate *new, struct edstate *old) -{ - memcpy(new->cbuf, old->cbuf, old->linelen); - new->linelen = old->linelen; - new->cursor = old->cursor; - new->winleft = old->winleft; - free_edstate(old); -} - -static void -free_edstate(struct edstate *old) -{ - afree(old->cbuf, APERM); - afree((char *)old, APERM); -} - - - -static void -edit_reset(char *buf, size_t len) -{ - const char *p; - - es = &ebuf; - es->cbuf = buf; - es->cbufsize = len; - undo = &undobuf; - undo->cbufsize = len; - - es->linelen = undo->linelen = 0; - es->cursor = undo->cursor = 0; - es->winleft = undo->winleft = 0; - - cur_col = pwidth = promptlen(prompt, &p); - prompt_skip = p - prompt; - if (pwidth > x_cols - 3 - MIN_EDIT_SPACE) { - cur_col = x_cols - 3 - MIN_EDIT_SPACE; - prompt_trunc = pwidth - cur_col; - pwidth -= prompt_trunc; - } else - prompt_trunc = 0; - if (!wbuf_len || wbuf_len != x_cols - 3) { - wbuf_len = x_cols - 3; - wbuf[0] = aresize(wbuf[0], wbuf_len, APERM); - wbuf[1] = aresize(wbuf[1], wbuf_len, APERM); - } - (void) memset(wbuf[0], ' ', wbuf_len); - (void) memset(wbuf[1], ' ', wbuf_len); - winwidth = x_cols - pwidth - 3; - win = 0; - morec = ' '; - lastref = 1; - holdlen = 0; -} - -/* - * this is used for calling x_escape() in complete_word() - */ -static int -x_vi_putbuf(const char *s, size_t len) -{ - return putbuf(s, len, 0); -} - -static int -putbuf(const char *buf, int len, int repl) -{ - if (len == 0) - return 0; - if (repl) { - if (es->cursor + len >= es->cbufsize) - return -1; - if (es->cursor + len > es->linelen) - es->linelen = es->cursor + len; - } else { - if (es->linelen + len >= es->cbufsize) - return -1; - memmove(&es->cbuf[es->cursor + len], &es->cbuf[es->cursor], - es->linelen - es->cursor); - es->linelen += len; - } - memmove(&es->cbuf[es->cursor], buf, len); - es->cursor += len; - return 0; -} - -static void -del_range(int a, int b) -{ - if (es->linelen != b) - memmove(&es->cbuf[a], &es->cbuf[b], es->linelen - b); - es->linelen -= b - a; -} - -static int -findch(int ch, int cnt, int forw, int incl) -{ - int ncursor; - - if (es->linelen == 0) - return -1; - ncursor = es->cursor; - while (cnt--) { - do { - if (forw) { - if (++ncursor == es->linelen) - return -1; - } else { - if (--ncursor < 0) - return -1; - } - } while (es->cbuf[ncursor] != ch); - } - if (!incl) { - if (forw) - ncursor--; - else - ncursor++; - } - return ncursor; -} - -static int -forwword(int argcnt) -{ - int ncursor; - - ncursor = es->cursor; - while (ncursor < es->linelen && argcnt--) { - if (is_wordch(es->cbuf[ncursor])) - while (is_wordch(es->cbuf[ncursor]) && - ncursor < es->linelen) - ncursor++; - else if (!isspace(es->cbuf[ncursor])) - while (!is_wordch(es->cbuf[ncursor]) && - !isspace(es->cbuf[ncursor]) && - ncursor < es->linelen) - ncursor++; - while (isspace(es->cbuf[ncursor]) && ncursor < es->linelen) - ncursor++; - } - return ncursor; -} - -static int -backword(int argcnt) -{ - int ncursor; - - ncursor = es->cursor; - while (ncursor > 0 && argcnt--) { - while (--ncursor > 0 && isspace(es->cbuf[ncursor])) - ; - if (ncursor > 0) { - if (is_wordch(es->cbuf[ncursor])) - while (--ncursor >= 0 && - is_wordch(es->cbuf[ncursor])) - ; - else - while (--ncursor >= 0 && - !is_wordch(es->cbuf[ncursor]) && - !isspace(es->cbuf[ncursor])) - ; - ncursor++; - } - } - return ncursor; -} - -static int -endword(int argcnt) -{ - int ncursor; - - ncursor = es->cursor; - while (ncursor < es->linelen && argcnt--) { - while (++ncursor < es->linelen - 1 && - isspace(es->cbuf[ncursor])) - ; - if (ncursor < es->linelen - 1) { - if (is_wordch(es->cbuf[ncursor])) - while (++ncursor < es->linelen && - is_wordch(es->cbuf[ncursor])) - ; - else - while (++ncursor < es->linelen && - !is_wordch(es->cbuf[ncursor]) && - !isspace(es->cbuf[ncursor])) - ; - ncursor--; - } - } - return ncursor; -} - -static int -Forwword(int argcnt) -{ - int ncursor; - - ncursor = es->cursor; - while (ncursor < es->linelen && argcnt--) { - while (!isspace(es->cbuf[ncursor]) && ncursor < es->linelen) - ncursor++; - while (isspace(es->cbuf[ncursor]) && ncursor < es->linelen) - ncursor++; - } - return ncursor; -} - -static int -Backword(int argcnt) -{ - int ncursor; - - ncursor = es->cursor; - while (ncursor > 0 && argcnt--) { - while (--ncursor >= 0 && isspace(es->cbuf[ncursor])) - ; - while (ncursor >= 0 && !isspace(es->cbuf[ncursor])) - ncursor--; - ncursor++; - } - return ncursor; -} - -static int -Endword(int argcnt) -{ - int ncursor; - - ncursor = es->cursor; - while (ncursor < es->linelen - 1 && argcnt--) { - while (++ncursor < es->linelen - 1 && - isspace(es->cbuf[ncursor])) - ; - if (ncursor < es->linelen - 1) { - while (++ncursor < es->linelen && - !isspace(es->cbuf[ncursor])) - ; - ncursor--; - } - } - return ncursor; -} - -static int -grabhist(int save, int n) -{ - char *hptr; - - if (n < 0 || n > hlast) - return -1; - if (n == hlast) { - restore_cbuf(); - ohnum = n; - return 0; - } - (void) histnum(n); - if ((hptr = *histpos()) == NULL) { - internal_errorf(0, "grabhist: bad history array"); - return -1; - } - if (save) - save_cbuf(); - if ((es->linelen = strlen(hptr)) >= es->cbufsize) - es->linelen = es->cbufsize - 1; - memmove(es->cbuf, hptr, es->linelen); - es->cursor = 0; - ohnum = n; - return 0; -} - -static int -grabsearch(int save, int start, int fwd, char *pat) -{ - char *hptr; - int hist; - int anchored; - - if ((start == 0 && fwd == 0) || (start >= hlast-1 && fwd == 1)) - return -1; - if (fwd) - start++; - else - start--; - anchored = *pat == '^' ? (++pat, 1) : 0; - if ((hist = findhist(start, fwd, pat, anchored)) < 0) { - /* if (start != 0 && fwd && match(holdbuf, pat) >= 0) { */ - /* XXX should FILECMP be strncmp? */ - if (start != 0 && fwd && FILECMP(holdbuf, pat) >= 0) { - restore_cbuf(); - return 0; - } else - return -1; - } - if (save) - save_cbuf(); - histnum(hist); - hptr = *histpos(); - if ((es->linelen = strlen(hptr)) >= es->cbufsize) - es->linelen = es->cbufsize - 1; - memmove(es->cbuf, hptr, es->linelen); - es->cursor = 0; - return hist; -} - -static void -redraw_line(int newline) -{ - (void) memset(wbuf[win], ' ', wbuf_len); - if (newline) { - x_putc('\r'); - x_putc('\n'); - } - vi_pprompt(0); - cur_col = pwidth; - morec = ' '; -} - -static void -refresh(int leftside) -{ - if (leftside < 0) - leftside = lastref; - else - lastref = leftside; - if (outofwin()) - rewindow(); - display(wbuf[1 - win], wbuf[win], leftside); - win = 1 - win; -} - -static int -outofwin(void) -{ - int cur, col; - - if (es->cursor < es->winleft) - return 1; - col = 0; - cur = es->winleft; - while (cur < es->cursor) - col = newcol((unsigned char) es->cbuf[cur++], col); - if (col >= winwidth) - return 1; - return 0; -} - -static void -rewindow(void) -{ - int tcur, tcol; - int holdcur1, holdcol1; - int holdcur2, holdcol2; - - holdcur1 = holdcur2 = tcur = 0; - holdcol1 = holdcol2 = tcol = 0; - while (tcur < es->cursor) { - if (tcol - holdcol2 > winwidth / 2) { - holdcur1 = holdcur2; - holdcol1 = holdcol2; - holdcur2 = tcur; - holdcol2 = tcol; - } - tcol = newcol((unsigned char) es->cbuf[tcur++], tcol); - } - while (tcol - holdcol1 > winwidth / 2) - holdcol1 = newcol((unsigned char) es->cbuf[holdcur1++], - holdcol1); - es->winleft = holdcur1; -} - -static int -newcol(int ch, int col) -{ - if (ch == '\t') - return (col | 7) + 1; - return col + char_len(ch); -} - -static void -display(char *wb1, char *wb2, int leftside) -{ - unsigned char ch; - char *twb1, *twb2, mc; - int cur, col, cnt; - int UNINITIALIZED(ncol); - int moreright; - - col = 0; - cur = es->winleft; - moreright = 0; - twb1 = wb1; - while (col < winwidth && cur < es->linelen) { - if (cur == es->cursor && leftside) - ncol = col + pwidth; - if ((ch = es->cbuf[cur]) == '\t') { - do { - *twb1++ = ' '; - } while (++col < winwidth && (col & 7) != 0); - } else { - if ((ch & 0x80) && Flag(FVISHOW8)) { - *twb1++ = 'M'; - if (++col < winwidth) { - *twb1++ = '-'; - col++; - } - ch &= 0x7f; - } - if (col < winwidth) { - if (ch < ' ' || ch == 0x7f) { - *twb1++ = '^'; - if (++col < winwidth) { - *twb1++ = ch ^ '@'; - col++; - } - } else { - *twb1++ = ch; - col++; - } - } - } - if (cur == es->cursor && !leftside) - ncol = col + pwidth - 1; - cur++; - } - if (cur == es->cursor) - ncol = col + pwidth; - if (col < winwidth) { - while (col < winwidth) { - *twb1++ = ' '; - col++; - } - } else - moreright++; - *twb1 = ' '; - - col = pwidth; - cnt = winwidth; - twb1 = wb1; - twb2 = wb2; - while (cnt--) { - if (*twb1 != *twb2) { - if (cur_col != col) - ed_mov_opt(col, wb1); - x_putc(*twb1); - cur_col++; - } - twb1++; - twb2++; - col++; - } - if (es->winleft > 0 && moreright) - /* POSIX says to use * for this but that is a globbing - * character and may confuse people; + is more innocuous - */ - mc = '+'; - else if (es->winleft > 0) - mc = '<'; - else if (moreright) - mc = '>'; - else - mc = ' '; - if (mc != morec) { - ed_mov_opt(pwidth + winwidth + 1, wb1); - x_putc(mc); - cur_col++; - morec = mc; - } - if (cur_col != ncol) - ed_mov_opt(ncol, wb1); -} - -static void -ed_mov_opt(int col, char *wb) -{ - if (col < cur_col) { - if (col + 1 < cur_col - col) { - x_putc('\r'); - vi_pprompt(0); - cur_col = pwidth; - while (cur_col++ < col) - x_putc(*wb++); - } else { - while (cur_col-- > col) - x_putc('\b'); - } - } else { - wb = &wb[cur_col - pwidth]; - while (cur_col++ < col) - x_putc(*wb++); - } - cur_col = col; -} - - -/* replace word with all expansions (ie, expand word*) */ -static int -expand_word(int command) -{ - static struct edstate *buf; - int rval = 0; - int nwords; - int start, end; - char **words; - int i; - - /* Undo previous expansion */ - if (command == 0 && expanded == EXPAND && buf) { - restore_edstate(es, buf); - buf = 0; - expanded = NONE; - return 0; - } - if (buf) { - free_edstate(buf); - buf = 0; - } - - nwords = x_cf_glob(XCF_COMMAND_FILE|XCF_FULLPATH, - es->cbuf, es->linelen, es->cursor, - &start, &end, &words, NULL); - if (nwords == 0) { - vi_error(); - return -1; - } - - buf = save_edstate(es); - expanded = EXPAND; - del_range(start, end); - es->cursor = start; - for (i = 0; i < nwords; ) { - if (x_escape(words[i], strlen(words[i]), x_vi_putbuf) != 0) { - rval = -1; - break; - } - if (++i < nwords && putbuf(space, 1, 0) != 0) { - rval = -1; - break; - } - } - i = buf->cursor - end; - if (rval == 0 && i > 0) - es->cursor += i; - modified = 1; hnum = hlast; - insert = INSERT; - lastac = 0; - refresh(0); - return rval; -} - -static int -complete_word(int command, int count) -{ - static struct edstate *buf; - int rval = 0; - int nwords; - int start, end; - char **words; - char *match; - int match_len; - int is_unique; - int is_command; - - /* Undo previous completion */ - if (command == 0 && expanded == COMPLETE && buf) { - print_expansions(buf, 0); - expanded = PRINT; - return 0; - } - if (command == 0 && expanded == PRINT && buf) { - restore_edstate(es, buf); - buf = 0; - expanded = NONE; - return 0; - } - if (buf) { - free_edstate(buf); - buf = 0; - } - - /* XCF_FULLPATH for count 'cause the menu printed by print_expansions() - * was done this way. - */ - nwords = x_cf_glob(XCF_COMMAND_FILE | (count ? XCF_FULLPATH : 0), - es->cbuf, es->linelen, es->cursor, - &start, &end, &words, &is_command); - if (nwords == 0) { - vi_error(); - return -1; - } - if (count) { - int i; - - count--; - if (count >= nwords) { - vi_error(); - x_print_expansions(nwords, words, is_command); - x_free_words(nwords, words); - redraw_line(0); - return -1; - } - /* - * Expand the count'th word to its basename - */ - if (is_command) { - match = words[count] - + x_basename(words[count], NULL); - /* If more than one possible match, use full path */ - for (i = 0; i < nwords; i++) - if (i != count && - FILECMP(words[i] - + x_basename(words[i], NULL), - match) == 0) - { - match = words[count]; - break; - } - } else - match = words[count]; - match_len = strlen(match); - is_unique = 1; - /* expanded = PRINT; next call undo */ - } else { - match = words[0]; - match_len = x_longest_prefix(nwords, words); - expanded = COMPLETE; /* next call will list completions */ - is_unique = nwords == 1; - } - - buf = save_edstate(es); - del_range(start, end); - es->cursor = start; - - /* escape all shell-sensitive characters and put the result into - * command buffer */ - rval = x_escape(match, match_len, x_vi_putbuf); - - if (rval == 0 && is_unique) { - /* If exact match, don't undo. Allows directory completions - * to be used (ie, complete the next portion of the path). - */ - expanded = NONE; - - /* If not a directory, add a space to the end... */ - if (match_len > 0 && !ISDIRSEP(match[match_len - 1])) - rval = putbuf(space, 1, 0); - } - x_free_words(nwords, words); - - modified = 1; hnum = hlast; - insert = INSERT; - lastac = 0; /* prevent this from being redone... */ - refresh(0); - - return rval; -} - -static int -print_expansions(struct edstate *e, int command GCC_FUNC_ATTR(unused)) -{ - int nwords; - int start, end; - char **words; - int is_command; - - nwords = x_cf_glob(XCF_COMMAND_FILE|XCF_FULLPATH, - e->cbuf, e->linelen, e->cursor, - &start, &end, &words, &is_command); - if (nwords == 0) { - vi_error(); - return -1; - } - x_print_expansions(nwords, words, is_command); - x_free_words(nwords, words); - redraw_line(0); - return 0; -} - -/* How long is char when displayed (not counting tabs) */ -static int -char_len(int c) -{ - int len = 1; - - if ((c & 0x80) && Flag(FVISHOW8)) { - len += 2; - c &= 0x7f; - } - if (c < ' ' || c == 0x7f) - len++; - return len; -} - -/* Similar to x_zotc(emacs.c), but no tab weirdness */ -static void -x_vi_zotc(int c) -{ - if (Flag(FVISHOW8) && (c & 0x80)) { - x_puts("M-"); - c &= 0x7f; - } - if (c < ' ' || c == 0x7f) { - x_putc('^'); - c ^= '@'; - } - x_putc(c); -} - -static void -vi_pprompt(int full) -{ - pprompt(prompt + (full ? 0 : prompt_skip), prompt_trunc); -} - -static void -vi_error(void) -{ - /* Beem out of any macros as soon as an error occurs */ - vi_macro_reset(); - x_putc(BEL); - x_flush(); -} - -static void -vi_macro_reset(void) -{ - if (macro.p) { - afree(macro.buf, APERM); - memset((char *) ¯o, 0, sizeof(macro)); - } -}