implement “live” SIGWINCH handling in the Emacs editing mode
for winstonw from IRC #!/bin/mksh
This commit is contained in:
tg
parent
e520cee572
commit
30046ffcf2
4
Build.sh
4
Build.sh
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@ -1,5 +1,5 @@
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#!/bin/sh
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srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.453 2010/07/04 17:33:53 tg Exp $'
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srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.454 2010/07/04 17:45:10 tg Exp $'
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#-
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# Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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# Thorsten Glaser <tg@mirbsd.org>
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@ -29,7 +29,7 @@ srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.453 2010/07/04 17:33:53 tg Exp $'
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# MKSH_CONSERVATIVE_FDS MKSH_MIDNIGHTBSD01ASH_COMPAT
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# MKSH_NOPWNAM MKSH_NO_LIMITS MKSH_SMALL MKSH_S_NOVI
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# MKSH_UNEMPLOYED MKSH_DEFAULT_EXECSHELL MKSHRC_PATH
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# MKSH_DEFAULT_TMPDIR
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# MKSH_DEFAULT_TMPDIR MKSH_CLRTOEOL_STRING
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LC_ALL=C
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export LC_ALL
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4
check.t
4
check.t
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@ -1,4 +1,4 @@
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# $MirOS: src/bin/mksh/check.t,v 1.378 2010/05/22 12:49:13 tg Exp $
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# $MirOS: src/bin/mksh/check.t,v 1.379 2010/07/04 17:45:11 tg Exp $
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# $OpenBSD: bksl-nl.t,v 1.2 2001/01/28 23:04:56 niklas Exp $
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# $OpenBSD: history.t,v 1.5 2001/01/28 23:04:56 niklas Exp $
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# $OpenBSD: read.t,v 1.3 2003/03/10 03:48:16 david Exp $
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@ -25,7 +25,7 @@
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# http://www.research.att.com/~gsf/public/ifs.sh
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expected-stdout:
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@(#)MIRBSD KSH R39 2010/05/22
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@(#)MIRBSD KSH R39 2010/07/04
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description:
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Check version of shell.
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stdin:
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58
edit.c
58
edit.c
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@ -25,7 +25,20 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/edit.c,v 1.192 2010/05/22 12:37:49 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/edit.c,v 1.193 2010/07/04 17:45:12 tg Exp $");
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/*
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* in later versions we might use libtermcap for this, but since external
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* dependencies are problematic, this has not yet been decided on; another
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* good string is "\033c" except on hardware terminals like the DEC VT420
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* which do a full power cycle then...
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*/
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#ifndef MKSH_CLS_STRING
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#define MKSH_CLS_STRING "\033[;H\033[J"
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#endif
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#ifndef MKSH_CLRTOEOL_STRING
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#define MKSH_CLRTOEOL_STRING "\033[K"
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#endif
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/* tty driver characters we are interested in */
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typedef struct {
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@ -45,6 +58,7 @@ static X_chars edchars;
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#define XCF_FULLPATH BIT(2) /* command completion: store full path */
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#define XCF_COMMAND_FILE (XCF_COMMAND|XCF_FILE)
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static char editmode;
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static int modified; /* buffer has been "modified" */
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static char holdbuf[LINE]; /* place to hold last edit buffer */
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@ -67,7 +81,11 @@ static int x_vi(char *, size_t);
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#endif
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#define x_flush() shf_flush(shl_out)
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#ifdef MKSH_SMALL
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#define x_putc(c) x_putcf(c)
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#else
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#define x_putc(c) shf_putc((c), shl_out)
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#endif
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static int path_order_cmp(const void *aa, const void *bb);
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static char *add_glob(const char *, int)
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@ -84,6 +102,7 @@ static int x_command_glob(int, const char *, int, char ***)
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static int x_locate_word(const char *, int, int, int *, bool *);
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static int x_e_getmbc(char *);
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static int x_e_rebuildline(const char *);
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/* +++ generic editing functions +++ */
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@ -96,7 +115,6 @@ x_init(void)
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edchars.eof = -2;
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/* default value for deficient systems */
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edchars.werase = 027; /* ^W */
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change_winsz();
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x_init_emacs();
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}
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@ -118,8 +136,8 @@ x_read(char *buf, size_t len)
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#endif
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else
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i = -1; /* internal error */
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editmode = 0;
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x_mode(false);
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change_winsz();
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return (i);
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}
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@ -1091,6 +1109,7 @@ x_emacs(char *buf, size_t len)
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x_load_hist(histptr - off);
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x_nextcmd = -1;
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}
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editmode = 1;
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while (1) {
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x_flush();
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if ((c = x_e_getc()) < 0)
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@ -1922,23 +1941,18 @@ x_draw_line(int c MKSH_A_UNUSED)
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return (KSTD);
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}
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static int
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x_e_rebuildline(const char *clrstr)
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{
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shf_fprintf(shl_out, clrstr);
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x_adjust();
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return (KSTD);
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}
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static int
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x_cls(int c MKSH_A_UNUSED)
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{
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/*
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* in later versions we might use libtermcap for this, but since external
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* dependencies are problematic, this has not yet been decided on; another
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* good string is "\033c" except on hardware terminals like the DEC VT420
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* which do a full power cycle then...
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*/
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#ifndef MKSH_CLS_STRING
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#define MKSH_CLS_STRING "\033[;H\033[J"
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#endif
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shf_fprintf(shl_out, MKSH_CLS_STRING);
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x_putc('\r');
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x_init_prompt();
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x_redraw(0);
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return (KSTD);
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return (x_e_rebuildline(MKSH_CLS_STRING));
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}
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/* Redraw (part of) the line. If limit is < 0, the everything is redrawn
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@ -3096,6 +3110,15 @@ x_mode(bool onoff)
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static bool x_cur_mode;
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bool prev;
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if (onoff && got_winch) {
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change_winsz();
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if (x_cols != xx_cols && editmode == 1) {
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/* redraw line in Emacs mode */
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xx_cols = x_cols;
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x_e_rebuildline(MKSH_CLRTOEOL_STRING);
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}
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}
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if (x_cur_mode == onoff)
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return (x_cur_mode);
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prev = x_cur_mode;
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@ -3381,6 +3404,7 @@ x_vi(char *buf, size_t len)
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lastref = 1;
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holdlen = 0;
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editmode = 2;
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x_flush();
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while (1) {
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if (macro.p) {
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@ -26,7 +26,7 @@
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#include <sys/file.h>
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#endif
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__RCSID("$MirOS: src/bin/mksh/histrap.c,v 1.95 2010/07/04 13:36:42 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/histrap.c,v 1.96 2010/07/04 17:45:14 tg Exp $");
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/*-
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* MirOS: This is the default mapping type, and need not be specified.
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@ -1433,9 +1433,10 @@ setsig(Trap *p, sig_t f, int flags)
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setexecsig(p, flags & SS_RESTORE_MASK);
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/*
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* This is here 'cause there should be a way of clearing shtraps,
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* but don't know if this is a sane way of doing it. At the moment,
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* all users of shtrap are lifetime users (SIGCHLD, SIGALRM).
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* This is here 'cause there should be a way of clearing
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* shtraps, but don't know if this is a sane way of doing
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* it. At the moment, all users of shtrap are lifetime
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* users (SIGALRM, SIGCHLD, SIGWINCH).
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*/
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if (!(flags & SS_USER))
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p->shtrap = (sig_t)NULL;
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4
lex.c
4
lex.c
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@ -22,7 +22,7 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.113 2010/04/08 13:21:06 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.114 2010/07/04 17:45:14 tg Exp $");
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/*
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* states while lexing word
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@ -1406,6 +1406,8 @@ getsc_line(Source *s)
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xp += nread;
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} else {
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if (interactive) {
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if (got_winch)
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change_winsz();
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pprompt(prompt, 0);
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} else
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s->line++;
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21
main.c
21
main.c
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@ -33,7 +33,7 @@
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#include <locale.h>
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#endif
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.166 2010/07/04 17:33:55 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.167 2010/07/04 17:45:15 tg Exp $");
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extern char **environ;
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@ -54,6 +54,9 @@ static void reclaim(void);
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static void remove_temps(struct temp *);
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void chvt_reinit(void);
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Source *mksh_init(int, const char *[]);
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#ifdef SIGWINCH
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static void x_sigwinch(int);
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#endif
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static const char initifs[] = "IFS= \t\n";
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@ -399,6 +402,12 @@ mksh_init(int argc, const char *argv[])
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x_init();
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}
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#ifdef SIGWINCH
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sigtraps[SIGWINCH].flags |= TF_SHELL_USES;
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setsig(&sigtraps[SIGWINCH], x_sigwinch,
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SS_RESTORE_ORIG|SS_FORCE|SS_SHTRAP);
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#endif
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l = e->loc;
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l->argv = &argv[argi - 1];
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l->argc = argc - argi;
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@ -1459,3 +1468,13 @@ ktsort(struct table *tp)
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p[i] = NULL;
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return (p);
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}
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#ifdef SIGWINCH
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static void
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x_sigwinch(int sig MKSH_A_UNUSED)
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{
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/* this runs inside interrupt context, with errno saved */
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got_winch = 1;
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}
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#endif
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13
sh.h
13
sh.h
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#endif
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#ifdef EXTERN
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.394 2010/07/04 17:33:57 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.395 2010/07/04 17:45:16 tg Exp $");
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#endif
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#define MKSH_VERSION "R39 2010/05/22"
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#define MKSH_VERSION "R39 2010/07/04"
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#ifndef MKSH_INCLUDES_ONLY
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@ -665,7 +665,7 @@ typedef struct trap {
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#define SS_RESTORE_IGN 3 /* restore to SIG_IGN */
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#define SS_FORCE BIT(3) /* set signal even if original signal ignored */
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#define SS_USER BIT(4) /* user is doing the set (ie, trap command) */
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#define SS_SHTRAP BIT(5) /* trap for internal use (SIGCHLD, SIGALRM) */
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#define SS_SHTRAP BIT(5) /* trap for internal use (ALRM, CHLD, WINCH) */
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#define SIGEXIT_ 0 /* for trap EXIT */
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#define SIGERR_ NSIG /* for trap ERR */
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@ -675,6 +675,13 @@ EXTERN volatile sig_atomic_t intrsig; /* pending trap interrupts command */
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EXTERN volatile sig_atomic_t fatal_trap;/* received a fatal signal */
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extern Trap sigtraps[NSIG+1];
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/* got_winch = 1 when needing to re-adjust the window size */
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#ifdef SIGWINCH
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EXTERN volatile sig_atomic_t got_winch I__(1);
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#else
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#define got_winch true
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#endif
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/*
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* TMOUT support
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*/
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6
var.c
6
var.c
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@ -22,7 +22,7 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/var.c,v 1.105 2010/07/04 17:33:58 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/var.c,v 1.106 2010/07/04 17:45:17 tg Exp $");
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/*
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* Variables
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@ -1440,6 +1440,10 @@ change_winsz(void)
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x_cols = 80;
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if (x_lins < MIN_LINS)
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x_lins = 24;
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#ifdef SIGWINCH
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got_winch = 0;
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#endif
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}
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uint32_t
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