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mksh/edit.c
tg 52b9911ff6 revert the return type of x_e_getc() back from u_char to int 
this change broke abortion on failure to read input, was not
needed for gcc warnings and is the fault of Intel’s compiler

this should fix the other busy-loop problem occuring only on
GNU/Linux so far – 10x spaetzle@freewrt.o for pointing me to
the problem; reproduced on my work craptop
2007-10-09 14:50:50 +00:00

5425 lines
112 KiB
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/* $OpenBSD: edit.c,v 1.33 2007/08/02 10:50:25 fgsch Exp $ */
/* $OpenBSD: edit.h,v 1.8 2005/03/28 21:28:22 deraadt Exp $ */
/* $OpenBSD: emacs.c,v 1.41 2007/08/02 10:50:25 fgsch Exp $ */
/* $OpenBSD: vi.c,v 1.23 2006/04/10 14:38:59 jaredy Exp $ */
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/edit.c,v 1.114 2007/10/09 14:50:50 tg Exp $");
/* tty driver characters we are interested in */
typedef struct {
int erase;
int kill;
int werase;
int intr;
int quit;
int eof;
} X_chars;
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)
static int x_getc(void);
static void x_flush(void);
static void x_putc(int);
static bool x_mode(bool);
static int x_do_comment(char *, int, int *);
static void x_print_expansions(int, char *const *, int);
static int x_cf_glob(int, const char *, int, int, int *, int *, char ***, int *);
static int x_longest_prefix(int, char *const *);
static int x_basename(const char *, const char *);
static void x_free_words(int, char **);
static int x_escape(const char *, size_t, int (*)(const char *, size_t));
static int x_emacs(char *, size_t);
static void x_init_emacs(void);
static void x_init_prompt(void);
#ifndef MKSH_NOVI
static int x_vi(char *, size_t);
#endif
#ifdef TIOCGWINSZ
static void chkwinsz(void);
#endif
static int path_order_cmp(const void *aa, const void *bb);
static char *add_glob(const char *, int);
static void glob_table(const char *, XPtrV *, struct table *);
static void glob_path(int flags, const char *, XPtrV *, const char *);
static int x_file_glob(int, const char *, int, char ***);
static int x_command_glob(int, const char *, int, char ***);
static int x_locate_word(const char *, int, int, int *, int *);
/* +++ generic editing functions +++ */
/* 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
chkwinsz();
#endif
x_init_emacs();
}
#ifdef TIOCGWINSZ
static void
chkwinsz(void)
{
struct winsize ws;
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
/*
* read an edited command line
*/
int
x_read(char *buf, size_t len)
{
int i;
x_mode(true);
if (Flag(FEMACS) || Flag(FGMACS))
i = x_emacs(buf, len);
#ifndef MKSH_NOVI
else if (Flag(FVI))
i = x_vi(buf, len);
#endif
else
i = -1; /* internal error */
x_mode(false);
#ifdef TIOCGWINSZ
chkwinsz();
#endif
return i;
}
/* tty I/O */
static int
x_getc(void)
{
char c;
int n;
while ((n = blocking_read(STDIN_FILENO, &c, 1)) < 0 && errno == EINTR)
if (trap) {
x_mode(false);
runtraps(0);
x_mode(true);
}
return ((n == 1) ? (int)(unsigned char)c : -1);
}
static void
x_flush(void)
{
shf_flush(shl_out);
}
static void
x_putc(int c)
{
shf_putc(c, shl_out);
}
/* ------------------------------------------------------------------------- */
/* 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.
*/
static 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 void
x_print_expansions(int nwords, char * const *words, int is_command)
{
int use_copy = 0;
int prefix_len;
XPtrV l = { NULL, NULL, NULL };
/* 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 && 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 __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;
}
/* specially escape escaped [ for globbing */
if (escaping && toglob[i] == '[')
toglob[idx++] = QCHAR;
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 | LQCHAR) != LWORD) {
source = sold;
internal_warningf("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);
words = NULL;
nwords = 0;
}
}
afree(toglob, ATEMP);
if ((*wordsp = nwords ? words : NULL) == NULL && words != NULL)
x_free_words(nwords, words);
return nwords;
}
/* Data structure used in x_command_glob() */
struct path_order_info {
char *word;
int base;
int path_order;
};
/* 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 = strcmp(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 ||
strncmp(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;
qsort(words, nwords, sizeof (void *), 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 && ksh_isspace(buf[p]);
p--)
;
iscmd = p < 0 || vstrchr(";|&()`", 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 (buf[p] == '/')
break;
iscmd = p == end;
}
*is_commandp = iscmd;
}
*startp = start;
return end - start;
}
static 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 = NULL;
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(flags, buf + *startp, len, &words) :
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] == '(' && vstrchr("*+?@!", *s)))
break;
else if (*s == '/')
saw_slash = true;
}
if (!*s && (*toglob != '~' || saw_slash)) {
toglob[slen] = '*';
toglob[slen + 1] = '\0';
}
return toglob;
}
/*
* Find longest common prefix
*/
static 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 (p[j] != words[0][j]) {
prefix_len = j;
break;
}
return prefix_len;
}
static void
x_free_words(int nwords, char **words)
{
int i;
for (i = 0; i < nwords; i++)
afreechk(words[i]);
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
*/
static 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 && *p == '/'; p--)
;
for (; p > s && *p != '/'; p--)
;
if (*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 (ktwalk(&ts, tp); (te = ktnext(&ts)); ) {
if (gmatchx(te->name, pat, false))
XPput(*wp, str_save(te->name, ATEMP));
}
}
static void
glob_path(int flags, const char *pat, XPtrV *wp, const char *lpath)
{
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 = lpath;
Xinit(xs, xp, patlen + 128, ATEMP);
while (sp) {
xp = Xstring(xs, xp);
if (!(p = cstrchr(sp, ':')))
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++ = '/';
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
*/
static int
x_escape(const char *s, size_t len, int (*putbuf_func)(const char *, size_t))
{
size_t add = 0, wlen = len;
const char *ifs = str_val(local("IFS", 0));
int rval = 0;
while (wlen - add > 0)
if (vstrchr("\\$()[?{}*&;#|<>\"'`", s[add]) ||
vstrchr(ifs, s[add])) {
if (putbuf_func(s, add) != 0) {
rval = -1;
break;
}
putbuf_func(s[add] == '\n' ? "'" : "\\", 1);
putbuf_func(&s[add], 1);
if (s[add] == '\n')
putbuf_func("'", 1);
add++;
wlen -= add;
s += add;
add = 0;
} else
++add;
if (wlen > 0 && rval == 0)
rval = putbuf_func(s, wlen);
return (rval);
}
/* +++ UTF-8 hack +++ */
static size_t mbxtowc(unsigned *, const char *);
static size_t wcxtomb(char *, unsigned);
static int wcxwidth(unsigned);
static int x_e_getmbc(char *);
static char *utf_getcpfromcols(char *, int);
static void utf_ptradj(char *, char **);
/* UTF-8 hack: high-level functions */
#if HAVE_EXPSTMT
#define utf_backch(c) (!Flag(FUTFHACK) ? (c) - 1 : ({ \
u_char *utf_backch_cp = (u_char *)(c); \
--utf_backch_cp; \
while ((*utf_backch_cp >= 0x80) && \
(*utf_backch_cp < 0xC0)) \
--utf_backch_cp; \
(__typeof__ (c))utf_backch_cp; \
}))
#else
#define utf_backch(c) (!Flag(FUTFHACK) ? (c) - 1 : \
(c) + (ptrdiff_t)(utf_backch_((u_char *)c) - ((u_char *)(c))))
static u_char *utf_backch_(u_char *);
static u_char *
utf_backch_(u_char *utf_backch_cp)
{
--utf_backch_cp;
while ((*utf_backch_cp >= 0x80) && (*utf_backch_cp < 0xC0))
--utf_backch_cp;
return (utf_backch_cp);
}
#endif
int
utf_widthadj(const char *src, const char **dst)
{
size_t len;
unsigned wc;
int width;
if (!Flag(FUTFHACK) || *(const unsigned char *)src <= 0x7F ||
(len = mbxtowc(&wc, src)) == (size_t)-1) {
if (dst)
*dst = src + 1;
return (1);
}
if (dst)
*dst = src + len;
width = wcxwidth(wc);
return (width == -1 ? 2 : width);
}
static void
utf_ptradj(char *src, char **dst)
{
size_t len;
if (!Flag(FUTFHACK) || *(unsigned char *)src < 0xC2)
len = 1;
else if (*(unsigned char *)src < 0xE0)
len = 2;
else if (*(unsigned char *)src < 0xF0)
len = 3;
else
len = 1;
if (len > 1)
if ((*(unsigned char *)(src + 1) & 0xC0) != 0x80)
len = 1;
if (len > 2)
if ((*(unsigned char *)(src + 2) & 0xC0) != 0x80)
len = 2;
if (dst)
*dst = src + len;
}
static char *
utf_getcpfromcols(char *p, int cols)
{
int c = 0;
while (c < cols)
c += utf_widthadj(p, (const char **)&p);
return (p);
}
/* UTF-8 hack: low-level functions */
/* --- begin of wcwidth.c excerpt --- */
/*
* Markus Kuhn -- 2003-05-20 (Unicode 4.0)
*
* Permission to use, copy, modify, and distribute this software
* for any purpose and without fee is hereby granted. The author
* disclaims all warranties with regard to this software.
*/
__RCSID("_MirOS: src/lib/libc/i18n/wcwidth.c,v 1.4 2006/11/01 20:01:20 tg Exp $");
static int
wcxwidth(unsigned c)
{
static const struct cbset {
unsigned short first;
unsigned short last;
} comb[] = {
{ 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
{ 0x0591, 0x05B9 }, { 0x05BB, 0x05BD }, { 0x05BF, 0x05BF },
{ 0x05C1, 0x05C2 }, { 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 },
{ 0x0600, 0x0603 }, { 0x0610, 0x0615 }, { 0x064B, 0x065E },
{ 0x0670, 0x0670 }, { 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 },
{ 0x06EA, 0x06ED }, { 0x070F, 0x070F }, { 0x0711, 0x0711 },
{ 0x0730, 0x074A }, { 0x07A6, 0x07B0 }, { 0x0901, 0x0902 },
{ 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
{ 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
{ 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
{ 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
{ 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
{ 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
{ 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
{ 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
{ 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
{ 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
{ 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
{ 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
{ 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D }, { 0x0DCA, 0x0DCA },
{ 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 }, { 0x0E31, 0x0E31 },
{ 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E }, { 0x0EB1, 0x0EB1 },
{ 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC }, { 0x0EC8, 0x0ECD },
{ 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 }, { 0x0F37, 0x0F37 },
{ 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E }, { 0x0F80, 0x0F84 },
{ 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 }, { 0x0F99, 0x0FBC },
{ 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 }, { 0x1032, 0x1032 },
{ 0x1036, 0x1037 }, { 0x1039, 0x1039 }, { 0x1058, 0x1059 },
{ 0x1160, 0x11FF }, { 0x135F, 0x135F }, { 0x1712, 0x1714 },
{ 0x1732, 0x1734 }, { 0x1752, 0x1753 }, { 0x1772, 0x1773 },
{ 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD }, { 0x17C6, 0x17C6 },
{ 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD }, { 0x180B, 0x180D },
{ 0x18A9, 0x18A9 }, { 0x1920, 0x1922 }, { 0x1927, 0x1928 },
{ 0x1932, 0x1932 }, { 0x1939, 0x193B }, { 0x1A17, 0x1A18 },
{ 0x1DC0, 0x1DC3 }, { 0x200B, 0x200F }, { 0x202A, 0x202E },
{ 0x2060, 0x2063 }, { 0x206A, 0x206F }, { 0x20D0, 0x20EB },
{ 0x302A, 0x302F }, { 0x3099, 0x309A }, { 0xA806, 0xA806 },
{ 0xA80B, 0xA80B }, { 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E },
{ 0xFE00, 0xFE0F }, { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF },
{ 0xFFF9, 0xFFFB }
};
size_t min = 0, mid, max = NELEM(comb) - 1;
/* test for 8-bit control characters */
if (c < 32 || (c >= 0x7f && c < 0xa0))
return (c ? -1 : 0);
/* binary search in table of non-spacing characters */
if (c >= comb[0].first && c <= comb[max].last)
while (max >= min) {
mid = (min + max) / 2;
if (c > comb[mid].last)
min = mid + 1;
else if (c < comb[mid].first)
max = mid - 1;
else
return (0);
}
/* if we arrive here, c is not a combining or C0/C1 control char */
return ((c >= 0x1100 && (
c <= 0x115f || /* Hangul Jamo init. consonants */
c == 0x2329 || c == 0x232a ||
(c >= 0x2e80 && c <= 0xa4cf && c != 0x303f) || /* CJK ... Yi */
(c >= 0xac00 && c <= 0xd7a3) || /* Hangul Syllables */
(c >= 0xf900 && c <= 0xfaff) || /* CJK Compatibility Ideographs */
(c >= 0xfe30 && c <= 0xfe6f) || /* CJK Compatibility Forms */
(c >= 0xff00 && c <= 0xff60) || /* Fullwidth Forms */
(c >= 0xffe0 && c <= 0xffe6))) ? 2 : 1);
}
/* --- end of wcwidth.c excerpt --- */
/* --- begin of mbrtowc.c excerpt --- */
__RCSID("_MirOS: src/lib/libc/i18n/mbrtowc.c,v 1.13 2006/11/01 20:01:19 tg Exp $");
static size_t
mbxtowc(unsigned *dst, const char *src)
{
const unsigned char *s = (const unsigned char *)src;
unsigned c, wc;
unsigned count;
wc = *s++;
if (wc < 0x80) {
count = 0;
} else if (wc < 0xC2) {
/* < 0xC0: spurious second byte */
/* < 0xC2: non-minimalistic mapping error in 2-byte seqs */
goto ilseq;
} else if (wc < 0xE0) {
count = 1; /* one byte follows */
wc = (wc & 0x1F) << 6;
} else if (wc < 0xF0) {
count = 2; /* two bytes follow */
wc = (wc & 0x0F) << 12;
} else {
/* we don't support more than UCS-2 */
goto ilseq;
}
while (count) {
if (((c = *s++) & 0xC0) != 0x80)
goto ilseq;
c &= 0x3F;
wc |= c << (6 * --count);
/* Check for non-minimalistic mapping error in 3-byte seqs */
if (count && (wc < 0x0800))
goto ilseq;
}
if (wc > 0xFFFD) {
ilseq:
return ((size_t)(-1));
}
if (dst != NULL)
*dst = wc;
return (wc ? ((const char *)s - src) : 0);
}
/* --- end of mbrtowc.c excerpt --- */
/* --- begin of wcrtomb.c excerpt --- */
__RCSID("_MirOS: src/lib/libc/i18n/wcrtomb.c,v 1.14 2006/11/01 20:12:44 tg Exp $");
static size_t
wcxtomb(char *src, unsigned wc)
{
unsigned char *s = (unsigned char *)src;
unsigned count;
if (wc > 0xFFFD)
wc = 0xFFFD;
if (wc < 0x80) {
count = 0;
*s++ = wc;
} else if (wc < 0x0800) {
count = 1;
*s++ = (wc >> 6) | 0xC0;
} else {
count = 2;
*s++ = (wc >> 12) | 0xE0;
}
while (count) {
*s++ = ((wc >> (6 * --count)) & 0x3F) | 0x80;
}
return ((char *)s - src);
}
/* --- end of wcrtomb.c excerpt --- */
/* +++ emacs editing mode +++ */
static Area aedit;
#define AEDIT &aedit /* area for kill ring and macro defns */
#define MKCTRL(x) ((x) == '?' ? 0x7F : (x) & 0x1F) /* ASCII */
#define UNCTRL(x) ((x) ^ 0x40) /* ASCII */
/* values returned by keyboard functions */
#define KSTD 0
#define KEOL 1 /* ^M, ^J */
#define KINTR 2 /* ^G, ^C */
struct x_ftab {
int (*xf_func)(int c);
const char *xf_name;
short xf_flags;
};
struct x_defbindings {
unsigned char xdb_func; /* XFUNC_* */
unsigned char xdb_tab;
unsigned char xdb_char;
};
#define XF_ARG 1 /* command takes number prefix */
#define XF_NOBIND 2 /* not allowed to bind to function */
#define XF_PREFIX 4 /* function sets prefix */
/* Separator for completion */
#define is_cfs(c) ((c) == ' ' || (c) == '\t' || (c) == '"' || (c) == '\'')
/* Separator for motion */
#define is_mfs(c) (!(ksh_isalnux(c) || (c) == '$'))
#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;
/*
* 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;
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;
#ifndef MKSH_NOVI
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 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 */
#endif
static int prompt_redraw; /* 0 if newline forced after prompt */
static int x_ins(const char *);
static void x_delete(int, int);
static int x_bword(void);
static int x_fword(int);
static void x_goto(char *);
static void x_bs2(char *);
static int x_size_str(char *);
static int x_size2(char *, char **);
static void x_zots(char *);
static void x_zotc2(int);
static void x_zotc3(char **);
static void x_load_hist(char **);
static int x_search(char *, int, int);
static int x_match(char *, char *);
static void x_redraw(int);
static void x_push(int);
static char * x_mapin(const char *, Area *);
static char * x_mapout(int);
static void x_mapout2(int, char **);
static void x_print(int, int);
static void x_adjust(void);
static void x_e_ungetc(int);
static int x_e_getc(void);
static void x_e_putc2(int);
static void x_e_putc3(const char **);
static void x_e_puts(const char *);
static int x_fold_case(int);
static char *x_lastcp(void);
static void do_complete(int, Comp_type);
static int unget_char = -1;
static int x_do_ins(const char *, size_t);
static void bind_if_not_bound(int, int, int);
#define XFUNC_abort 0
#define XFUNC_beg_hist 1
#define XFUNC_cls 2
#define XFUNC_comp_comm 3
#define XFUNC_comp_file 4
#define XFUNC_complete 5
#define XFUNC_del_back 6
#define XFUNC_del_bword 7
#define XFUNC_del_char 8
#define XFUNC_del_fword 9
#define XFUNC_del_line 10
#define XFUNC_draw_line 11
#define XFUNC_end_hist 12
#define XFUNC_end_of_text 13
#define XFUNC_enumerate 14
#define XFUNC_eot_del 15
#define XFUNC_error 16
#define XFUNC_goto_hist 17
#define XFUNC_ins_string 18
#define XFUNC_insert 19
#define XFUNC_kill 20
#define XFUNC_kill_region 21
#define XFUNC_list_comm 22
#define XFUNC_list_file 23
#define XFUNC_literal 24
#define XFUNC_meta1 25
#define XFUNC_meta2 26
#define XFUNC_meta_yank 27
#define XFUNC_mv_back 28
#define XFUNC_mv_begin 29
#define XFUNC_mv_bword 30
#define XFUNC_mv_end 31
#define XFUNC_mv_forw 32
#define XFUNC_mv_fword 33
#define XFUNC_newline 34
#define XFUNC_next_com 35
#define XFUNC_nl_next_com 36
#define XFUNC_noop 37
#define XFUNC_prev_com 38
#define XFUNC_prev_histword 39
#define XFUNC_search_char_forw 40
#define XFUNC_search_char_back 41
#define XFUNC_search_hist 42
#define XFUNC_set_mark 43
#define XFUNC_transpose 44
#define XFUNC_xchg_point_mark 45
#define XFUNC_yank 46
#define XFUNC_comp_list 47
#define XFUNC_expand 48
#define XFUNC_fold_capitalise 49
#define XFUNC_fold_lower 50
#define XFUNC_fold_upper 51
#define XFUNC_set_arg 52
#define XFUNC_comment 53
#define XFUNC_version 54
/* XFUNC_* must be < 128 */
static int x_abort(int);
static int x_beg_hist(int);
static int x_cls(int);
static int x_comp_comm(int);
static int x_comp_file(int);
static int x_complete(int);
static int x_del_back(int);
static int x_del_bword(int);
static int x_del_char(int);
static int x_del_fword(int);
static int x_del_line(int);
static int x_draw_line(int);
static int x_end_hist(int);
static int x_end_of_text(int);
static int x_enumerate(int);
static int x_eot_del(int);
static int x_error(int);
static int x_goto_hist(int);
static int x_ins_string(int);
static int x_insert(int);
static int x_kill(int);
static int x_kill_region(int);
static int x_list_comm(int);
static int x_list_file(int);
static int x_literal(int);
static int x_meta1(int);
static int x_meta2(int);
static int x_meta_yank(int);
static int x_mv_back(int);
static int x_mv_begin(int);
static int x_mv_bword(int);
static int x_mv_end(int);
static int x_mv_forw(int);
static int x_mv_fword(int);
static int x_newline(int);
static int x_next_com(int);
static int x_nl_next_com(int);
static int x_noop(int);
static int x_prev_com(int);
static int x_prev_histword(int);
static int x_search_char_forw(int);
static int x_search_char_back(int);
static int x_search_hist(int);
static int x_set_mark(int);
static int x_transpose(int);
static int x_xchg_point_mark(int);
static int x_yank(int);
static int x_comp_list(int);
static int x_expand(int);
static int x_fold_capitalise(int);
static int x_fold_lower(int);
static int x_fold_upper(int);
static int x_set_arg(int);
static int x_comment(int);
static int x_version(int);
static const struct x_ftab x_ftab[] = {
{ x_abort, "abort", 0 },
{ x_beg_hist, "beginning-of-history", 0 },
{ x_cls, "clear-screen", 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_transpose, "transpose-chars", 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_capitalise, "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 },
{ x_version, "version", 0 },
{ 0, NULL, 0 }
};
static struct x_defbindings const x_defbindings[] = {
{ XFUNC_del_back, 0, MKCTRL('?') },
{ XFUNC_del_bword, 1, MKCTRL('?') },
{ XFUNC_eot_del, 0, MKCTRL('D') },
{ XFUNC_del_back, 0, MKCTRL('H') },
{ XFUNC_del_bword, 1, MKCTRL('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, MKCTRL('B') },
{ XFUNC_mv_forw, 0, MKCTRL('F') },
{ XFUNC_search_char_forw, 0, MKCTRL(']') },
{ XFUNC_search_char_back, 1, MKCTRL(']') },
{ XFUNC_newline, 0, MKCTRL('M') },
{ XFUNC_newline, 0, MKCTRL('J') },
{ XFUNC_end_of_text, 0, MKCTRL('_') },
{ XFUNC_abort, 0, MKCTRL('G') },
{ XFUNC_prev_com, 0, MKCTRL('P') },
{ XFUNC_next_com, 0, MKCTRL('N') },
{ XFUNC_nl_next_com, 0, MKCTRL('O') },
{ XFUNC_search_hist, 0, MKCTRL('R') },
{ XFUNC_beg_hist, 1, '<' },
{ XFUNC_end_hist, 1, '>' },
{ XFUNC_goto_hist, 1, 'g' },
{ XFUNC_mv_end, 0, MKCTRL('E') },
{ XFUNC_mv_begin, 0, MKCTRL('A') },
{ XFUNC_draw_line, 0, MKCTRL('L') },
{ XFUNC_cls, 1, MKCTRL('L') },
{ XFUNC_meta1, 0, MKCTRL('[') },
{ XFUNC_meta2, 0, MKCTRL('X') },
{ XFUNC_kill, 0, MKCTRL('K') },
{ XFUNC_yank, 0, MKCTRL('Y') },
{ XFUNC_meta_yank, 1, 'y' },
{ XFUNC_literal, 0, MKCTRL('^') },
{ XFUNC_comment, 1, '#' },
{ XFUNC_transpose, 0, MKCTRL('T') },
{ XFUNC_complete, 1, MKCTRL('[') },
{ XFUNC_comp_list, 0, MKCTRL('I') },
{ XFUNC_comp_list, 1, '=' },
{ XFUNC_enumerate, 1, '?' },
{ XFUNC_expand, 1, '*' },
{ XFUNC_comp_file, 1, MKCTRL('X') },
{ XFUNC_comp_comm, 2, MKCTRL('[') },
{ XFUNC_list_comm, 2, '?' },
{ XFUNC_list_file, 2, MKCTRL('Y') },
{ XFUNC_set_mark, 1, ' ' },
{ XFUNC_kill_region, 0, MKCTRL('W') },
{ XFUNC_xchg_point_mark, 2, MKCTRL('X') },
{ XFUNC_literal, 0, MKCTRL('V') },
{ XFUNC_version, 1, MKCTRL('V') },
{ 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_capitalise, 1, 'C' },
{ XFUNC_fold_capitalise, 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' },
{ XFUNC_mv_begin | 0x80, 2, '1' },
{ XFUNC_mv_begin | 0x80, 2, '7' },
{ XFUNC_mv_begin, 2, 'H' },
{ XFUNC_mv_end | 0x80, 2, '4' },
{ XFUNC_mv_end | 0x80, 2, '8' },
{ XFUNC_mv_end, 2, 'F' },
{ XFUNC_del_char | 0x80, 2, '3' },
};
static int
x_e_getmbc(char *sbuf)
{
int c, pos = 0;
unsigned char *buf = (unsigned char *)sbuf;
memset(buf, 0, 4);
buf[pos++] = c = x_e_getc();
if (c == -1)
return (-1);
if (Flag(FUTFHACK)) {
if ((buf[0] >= 0xC2) && (buf[0] < 0xF0)) {
buf[pos++] = c = x_e_getc();
if (c == -1)
return (-1);
}
if ((buf[0] >= 0xE0) && (buf[0] < 0xF0)) {
buf[pos++] = c = x_e_getc();
if (c == -1)
return (-1);
}
}
buf[pos] = '\0';
return (pos);
}
static void
x_init_prompt(void)
{
x_col = promptlen(prompt);
x_adj_ok = 1;
prompt_redraw = 1;
if (x_col > xx_cols)
x_col %= xx_cols;
x_displen = xx_cols - 2 - x_col;
x_adj_done = 0;
pprompt(prompt, 0);
if (x_displen < 1) {
x_col = 0;
x_displen = xx_cols - 2;
x_e_putc2('\n');
prompt_redraw = 0;
}
}
static int
x_emacs(char *buf, size_t len)
{
int c, 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_init_prompt();
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;
f = x_curprefix == -1 ? XFUNC_insert :
x_tab[x_curprefix][c & CHARMASK];
if (f & 0x80) {
f &= 0x7F;
if ((i = x_e_getc()) != '~')
x_e_ungetc(i);
}
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);
}
/* ad-hoc hack for fixing the cursor position */
x_goto(xcp);
}
}
static int
x_insert(int c)
{
static int left = 0, pos, save_arg;
static char str[4];
/*
* Should allow tab and control chars.
*/
if (c == 0) {
invmbs:
left = 0;
x_e_putc2(7);
return KSTD;
}
if (Flag(FUTFHACK)) {
if (((c & 0xC0) == 0x80) && left) {
str[pos++] = c;
if (!--left) {
str[pos] = '\0';
x_arg = save_arg;
while (x_arg--)
x_ins(str);
}
return (KSTD);
}
if (left) {
if (x_curprefix == -1) {
/* flush invalid multibyte */
str[pos] = '\0';
while (save_arg--)
x_ins(str);
}
}
if ((c >= 0xC2) && (c < 0xE0))
left = 1;
else if ((c >= 0xE0) && (c < 0xF0))
left = 2;
else if (c > 0x7F)
goto invmbs;
else
left = 0;
if (left) {
save_arg = x_arg;
pos = 1;
str[0] = c;
return (KSTD);
}
}
left = 0;
str[0] = c;
str[1] = '\0';
while (x_arg--)
x_ins(str);
return KSTD;
}
static int
x_ins_string(int c)
{
if (macroptr) {
x_e_putc2(7);
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, size_t len)
{
if (xep + len >= xend) {
x_e_putc2(7);
return -1;
}
memmove(xcp + len, xcp, xep - xcp + 1);
memmove(xcp, cp, len);
xcp += len;
xep += len;
return 0;
}
static int
x_ins(const 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 */
cp = xlp;
while (cp > xcp)
x_bs2(cp = utf_backch(cp));
}
if (xlp == xep - 1)
x_redraw(xx_cols);
x_adj_ok = 1;
return 0;
}
static int
x_del_back(int c __unused)
{
int i = 0;
if (xcp == xbuf) {
x_e_putc2(7);
return (KSTD);
}
do {
x_goto(xcp - 1);
} while ((++i < x_arg) && (xcp != xbuf));
x_delete(i, false);
return KSTD;
}
static int
x_del_char(int c __unused)
{
char *cp, *cp2;
int i = 0;
cp = xcp;
while (i < x_arg) {
utf_ptradj(cp, &cp2);
if (cp2 > xep)
break;
cp = cp2;
i++;
}
if (!i) {
x_e_putc2(7);
return KSTD;
}
x_delete(i, 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, nb, nw;
char *cp;
if (nc == 0)
return;
nw = 0;
cp = xcp;
for (i = 0; i < nc; ++i) {
char *cp2;
int j;
j = x_size2(cp, &cp2);
if (cp2 > xep)
break;
cp = cp2;
nw += j;
}
nb = cp - xcp;
/* nc = i; */
if (xmp != NULL && xmp > xcp) {
if (xcp + nb > xmp)
xmp = xcp;
else
xmp -= nb;
}
/*
* This lets us yank a word we have deleted.
*/
if (push)
x_push(nb);
xep -= nb;
cp = xcp;
memmove(xcp, xcp + nb, xep - xcp + 1); /* Copies the NUL */
x_adj_ok = 0; /* don't redraw */
xlp_valid = false;
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 || xep - xlp == 0) {
nw = i = (nw < i) ? nw : i;
while (i--)
x_e_putc2(' ');
if (x_col == xx_cols - 2) {
x_e_putc2((xep > xlp) ? '>' : (xbp > xbuf) ? '<' : ' ');
++nw;
}
while (nw--)
x_e_putc2('\b');
}
/*x_goto(xcp);*/
x_adj_ok = 1;
xlp_valid = false;
for (cp = x_lastcp(); cp > xcp; )
x_bs2(cp = utf_backch(cp));
return;
}
static int
x_del_bword(int c __unused)
{
x_delete(x_bword(), true);
return KSTD;
}
static int
x_mv_bword(int c __unused)
{
x_bword();
return KSTD;
}
static int
x_mv_fword(int c __unused)
{
x_fword(1);
return KSTD;
}
static int
x_del_fword(int c __unused)
{
x_delete(x_fword(0), true);
return KSTD;
}
static int
x_bword(void)
{
int nc = 0, nb = 0;
char *cp = xcp;
if (cp == xbuf) {
x_e_putc2(7);
return 0;
}
while (x_arg--) {
while (cp != xbuf && is_mfs(cp[-1])) {
cp--;
nb++;
}
while (cp != xbuf && !is_mfs(cp[-1])) {
cp--;
nb++;
}
}
x_goto(cp);
for (cp = xcp; cp < (xcp + nb); ++nc)
utf_ptradj(cp, &cp);
return nc;
}
static int
x_fword(int move)
{
int nc = 0;
char *cp = xcp, *cp2;
if (cp == xep) {
x_e_putc2(7);
return 0;
}
while (x_arg--) {
while (cp != xep && is_mfs(*cp))
cp++;
while (cp != xep && !is_mfs(*cp))
cp++;
}
for (cp2 = xcp; cp2 < cp; ++nc)
utf_ptradj(cp2, &cp2);
if (move)
x_goto(cp);
return nc;
}
static void
x_goto(char *cp)
{
if (Flag(FUTFHACK))
while ((cp > xbuf) && ((*cp & 0xC0) == 0x80))
--cp;
if (cp < xbp || cp >= utf_getcpfromcols(xbp, x_displen)) {
/* we are heading off screen */
xcp = cp;
x_adjust();
} else if (cp < xcp) { /* move back */
while (cp < xcp)
x_bs2(xcp = utf_backch(xcp));
} else if (cp > xcp) { /* move forward */
while (cp > xcp)
x_zotc3(&xcp);
}
}
static void
x_bs2(char *cp)
{
int i;
i = x_size2(cp, NULL);
while (i--)
x_e_putc2('\b');
}
static int
x_size_str(char *cp)
{
int size = 0;
while (*cp)
size += x_size2(cp, &cp);
return size;
}
static int
x_size2(char *cp, char **dcp)
{
int c = *(unsigned char *)cp;
if (Flag(FUTFHACK) && (c > 0x7F))
return (utf_widthadj(cp, (const char **)dcp));
if (dcp)
*dcp = cp + 1;
if (c == '\t')
return 4; /* Kludge, tabs are always four spaces. */
if (c < ' ' || c == 0x7f)
return 2; /* control u_char */
return 1;
}
static void
x_zots(char *str)
{
int adj = x_adj_done;
x_lastcp();
while (*str && str < xlp && adj == x_adj_done)
x_zotc3(&str);
}
static void
x_zotc2(int c)
{
if (c == '\t') {
/* Kludge, tabs are always four spaces. */
x_e_puts(" ");
} else if (c < ' ' || c == 0x7f) {
x_e_putc2('^');
x_e_putc2(UNCTRL(c));
} else
x_e_putc2(c);
}
static void
x_zotc3(char **cp)
{
unsigned c = **(unsigned char **)cp;
if (c == '\t') {
/* Kludge, tabs are always four spaces. */
x_e_puts(" ");
(*cp)++;
} else if (c < ' ' || c == 0x7f || (Flag(FUTFHACK) && c == 0xC2 &&
((unsigned char *)*cp)[1] < 0xA0 && mbxtowc(&c, *cp))) {
x_e_putc2('^');
x_e_putc2(UNCTRL(c));
*cp += c & 0x80 ? 2 : 1;
} else
x_e_putc3((const char **)cp);
}
static int
x_mv_back(int c __unused)
{
if (xcp == xbuf) {
x_e_putc2(7);
return KSTD;
}
while (x_arg--) {
x_goto(xcp - 1);
if (xcp == xbuf)
break;
}
return KSTD;
}
static int
x_mv_forw(int c __unused)
{
char *cp = xcp, *cp2;
if (xcp == xep) {
x_e_putc2(7);
return KSTD;
}
while (x_arg--) {
utf_ptradj(cp, &cp2);
if (cp2 > xep)
break;
cp = cp2;
}
x_goto(cp);
return KSTD;
}
static int
x_search_char_forw(int c __unused)
{
char *cp = xcp;
char tmp[4];
*xep = '\0';
if (x_e_getmbc(tmp) < 0) {
x_e_putc2(7);
return KSTD;
}
while (x_arg--) {
if ((cp = (cp == xep) ? NULL : strstr(cp + 1, tmp)) == NULL &&
(cp = strstr(xbuf, tmp)) == NULL) {
x_e_putc2(7);
return KSTD;
}
}
x_goto(cp);
return KSTD;
}
static int
x_search_char_back(int c __unused)
{
char *cp = xcp, *p;
char tmp[4];
int b;
if (x_e_getmbc(tmp) < 0) {
x_e_putc2(7);
return KSTD;
}
for (; x_arg--; cp = p)
for (p = cp; ; ) {
if (p-- == xbuf)
p = xep;
if (p == cp) {
x_e_putc2(7);
return KSTD;
}
if ((tmp[1] && ((p+1) > xep)) ||
(tmp[2] && ((p+2) > xep)))
continue;
b = 1;
if (*p != tmp[0])
b = 0;
if (b && tmp[1] && p[1] != tmp[1])
b = 0;
if (b && tmp[2] && p[2] != tmp[2])
b = 0;
if (b)
break;
}
x_goto(cp);
return KSTD;
}
static int
x_newline(int c __unused)
{
x_e_putc2('\r');
x_e_putc2('\n');
x_flush();
*xep++ = '\n';
return KEOL;
}
static int
x_end_of_text(int c __unused)
{
x_zotc2(edchars.eof);
x_putc('\r');
x_putc('\n');
x_flush();
return KEOL;
}
static int
x_beg_hist(int c __unused)
{
x_load_hist(history);
return KSTD;
}
static int
x_end_hist(int c __unused)
{
x_load_hist(histptr);
return KSTD;
}
static int
x_prev_com(int c __unused)
{
x_load_hist(x_histp - x_arg);
return KSTD;
}
static int
x_next_com(int c __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 __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_putc2(7);
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_redraw(oldsize);
}
x_goto(xep);
}
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)
{
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 (f & 0x80) {
f &= 0x7F;
if ((c = x_e_getc()) != '~')
x_e_ungetc(c);
}
if (c == MKCTRL('['))
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_putc2(7);
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_putc2('\n');
x_load_hist(hp);
x_goto(xbuf + i + strlen(pat) - (*pat == '^'));
return i;
}
}
x_e_putc2(7);
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 __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 __unused)
{
x_goto(xep);
return KSTD;
}
static int
x_mv_begin(int c __unused)
{
x_goto(xbuf);
return KSTD;
}
static int
x_draw_line(int c __unused)
{
x_redraw(-1);
return KSTD;
}
static int
x_cls(int c __unused)
{
/* in later versions we might use libtermcap for this */
#ifndef MKSH_CLS_STRING
#define MKSH_CLS_STRING "\033[;H\033[J"
#endif
shf_fprintf(shl_out, MKSH_CLS_STRING);
x_putc('\r');
x_init_prompt();
x_redraw(0);
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, x_trunc = 0;
char *cp;
x_adj_ok = 0;
if (limit == -1)
x_e_putc2('\n');
else
x_e_putc2('\r');
x_flush();
if (xbp == xbuf) {
x_col = promptlen(prompt);
if (x_col > xx_cols)
x_trunc = (x_col / xx_cols) * xx_cols;
if (prompt_redraw)
pprompt(prompt, x_trunc);
}
if (x_col > xx_cols)
x_col %= xx_cols;
x_displen = xx_cols - 2 - x_col;
if (x_displen < 1) {
x_col = 0;
x_displen = xx_cols - 2;
}
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 {
char *cpl = xbp;
i = limit;
while (cpl < xlp)
i -= x_size2(cpl, &cpl);
}
j = 0;
while ((j < i) || (x_col < (xx_cols - 2))) {
if (!(x_col < (xx_cols - 2)))
break;
x_e_putc2(' ');
j++;
}
i = ' ';
if (xep > xlp) { /* more off screen */
if (xbp > xbuf)
i = '*';
else
i = '>';
} else if (xbp > xbuf)
i = '<';
x_e_putc2(i);
j++;
while (j--)
x_e_putc2('\b');
}
for (cp = xlp; cp > xcp; )
x_bs2(cp = utf_backch(cp));
x_adj_ok = 1;
return;
}
static int
x_transpose(int c __unused)
{
unsigned tmpa, tmpb;
/* 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_putc2(7);
return KSTD;
} else if (xcp == xep || Flag(FGMACS)) {
if (xcp - xbuf == 1) {
x_e_putc2(7);
return KSTD;
}
/* Gosling/Unipress emacs style: Swap two characters before the
* cursor, do not change cursor position
*/
x_bs2(xcp = utf_backch(xcp));
if (mbxtowc(&tmpa, xcp) == (size_t)-1) {
x_e_putc2(7);
return KSTD;
}
x_bs2(xcp = utf_backch(xcp));
if (mbxtowc(&tmpb, xcp) == (size_t)-1) {
x_e_putc2(7);
return KSTD;
}
wcxtomb(xcp, tmpa);
x_zotc3(&xcp);
wcxtomb(xcp, tmpb);
x_zotc3(&xcp);
} else {
/* GNU emacs style: Swap the characters before and under the
* cursor, move cursor position along one.
*/
if (mbxtowc(&tmpa, xcp) == (size_t)-1) {
x_e_putc2(7);
return KSTD;
}
x_bs2(xcp = utf_backch(xcp));
if (mbxtowc(&tmpb, xcp) == (size_t)-1) {
x_e_putc2(7);
return KSTD;
}
wcxtomb(xcp, tmpa);
x_zotc3(&xcp);
wcxtomb(xcp, tmpb);
x_zotc3(&xcp);
}
return KSTD;
}
static int
x_literal(int c __unused)
{
x_curprefix = -1;
return KSTD;
}
static int
x_meta1(int c __unused)
{
x_curprefix = 1;
return KSTD;
}
static int
x_meta2(int c __unused)
{
x_curprefix = 2;
return KSTD;
}
static int
x_kill(int c __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 __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 __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 __unused)
{
/* x_zotc(c); */
xlp = xep = xcp = xbp = xbuf;
xlp_valid = true;
*xcp = 0;
return KINTR;
}
static int
x_error(int c __unused)
{
x_e_putc2(7);
return KSTD;
}
static char *
x_mapin(const char *cp, Area *ap)
{
char *new, *op;
op = new = str_save(cp, ap);
while (*cp) {
/* XXX -- should handle \^ escape? */
if (*cp == '^') {
cp++;
if (*cp >= '?') /* includes '?'; ASCII */
*op++ = MKCTRL(*cp);
else {
*op++ = '^';
cp--;
}
} else
*op++ = *cp;
cp++;
}
*op = '\0';
return new;
}
static void
x_mapout2(int c, char **buf)
{
char *p = *buf;
if (c < ' ' || c == 0x7f) {
*p++ = '^';
*p++ = UNCTRL(c);
} else
*p++ = c;
*p = 0;
*buf = p;
}
static char *
x_mapout(int c)
{
static char buf[8];
char *bp = buf;
x_mapout2(c, &bp);
return (buf);
}
static void
x_print(int prefix, int key)
{
int f = x_tab[prefix][key];
if (prefix)
/* prefix == 1 || prefix == 2 */
shprintf("%s", x_mapout(prefix == 1 ?
MKCTRL('[') : MKCTRL('X')));
shprintf("%s%s = ", x_mapout(key), (f & 0x80) ? "~" : "");
if ((f & 0x7F) != XFUNC_ins_string)
shprintf("%s\n", x_ftab[f & 0x7F].xf_name);
else
shprintf("'%s'\n", x_atab[prefix][key]);
}
int
x_bind(const char *a1, const char *a2,
int macro, /* bind -m */
int list) /* bind -l */
{
u_char f;
int prefix, key;
char *sp = NULL;
char *m1, *m2;
bool hastilde;
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] & 0x7F;
if (f == XFUNC_insert || f == XFUNC_error ||
(macro && f != XFUNC_ins_string))
continue;
x_print(prefix, key);
}
return (0);
}
m2 = m1 = x_mapin(a1, ATEMP);
prefix = key = 0;
for (;; m1++) {
key = *m1 & CHARMASK;
f = x_tab[prefix][key] & 0x7F;
if (f == XFUNC_meta1)
prefix = 1;
else if (f == XFUNC_meta2)
prefix = 2;
else
break;
}
if (*++m1 && ((*m1 != '~') || *(m1+1))) {
char msg[256] = "key sequence '";
const char *c = a1;
m1 = msg + strlen(msg);
while (*c && m1 < (msg + sizeof (msg) - 3))
x_mapout2(*c++, &m1);
bi_errorf("%s' too long", msg);
return (1);
}
hastilde = *m1;
afree(m2, ATEMP);
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;
sp = x_mapin(a2, AEDIT);
}
if ((x_tab[prefix][key] & 0x7F) == XFUNC_ins_string &&
x_atab[prefix][key])
afree((void *)x_atab[prefix][key], AEDIT);
x_tab[prefix][key] = f | (hastilde ? 0x80 : 0);
x_atab[prefix][key] = sp;
/* Track what the user has bound so x_mode(true) 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);
}
static void
x_init_emacs(void)
{
int i, j;
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 < (int)NELEM(x_defbindings); i++)
x_tab[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;
}
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;
}
static int
x_set_mark(int c __unused)
{
xmp = xcp;
return KSTD;
}
static int
x_kill_region(int c __unused)
{
int rsize;
char *xr;
if (xmp == NULL) {
x_e_putc2(7);
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 __unused)
{
char *tmp;
if (xmp == NULL) {
x_e_putc2(7);
return KSTD;
}
tmp = xmp;
xmp = xcp;
x_goto(tmp);
return KSTD;
}
static int
x_noop(int c __unused)
{
return KSTD;
}
/*
* File/command name completion routines
*/
static int
x_comp_comm(int c __unused)
{
do_complete(XCF_COMMAND, CT_COMPLETE);
return KSTD;
}
static int
x_list_comm(int c __unused)
{
do_complete(XCF_COMMAND, CT_LIST);
return KSTD;
}
static int
x_complete(int c __unused)
{
do_complete(XCF_COMMAND_FILE, CT_COMPLETE);
return KSTD;
}
static int
x_enumerate(int c __unused)
{
do_complete(XCF_COMMAND_FILE, CT_LIST);
return KSTD;
}
static int
x_comp_file(int c __unused)
{
do_complete(XCF_FILE, CT_COMPLETE);
return KSTD;
}
static int
x_list_file(int c __unused)
{
do_complete(XCF_FILE, CT_LIST);
return KSTD;
}
static int
x_comp_list(int c __unused)
{
do_complete(XCF_COMMAND_FILE, CT_COMPLIST);
return KSTD;
}
static int
x_expand(int c __unused)
{
char **words;
int nwords;
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_putc2(7);
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_do_ins) < 0 ||
(++i < nwords && x_ins(" ") < 0)) {
x_e_putc2(7);
return KSTD;
}
}
x_adjust();
return KSTD;
}
/* type == 0 for list, 1 for complete and 2 for complete-list */
static void
do_complete(int flags, /* XCF_{COMMAND,FILE,COMMAND_FILE} */
Comp_type type)
{
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_putc2(7);
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_do_ins);
x_adjust();
completed = 1;
}
/* add space if single non-dir match */
if (nwords == 1 && words[0][nlen - 1] != '/') {
x_ins(" ");
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;
if (Flag(FUTFHACK))
while ((xbp > xbuf) && ((*xbp & 0xC0) == 0x80))
--xbp;
xlp_valid = false;
x_redraw(xx_cols);
x_flush();
}
static void
x_e_ungetc(int c)
{
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_putc2(int c)
{
int width = 1;
if (c == '\r' || c == '\n')
x_col = 0;
if (x_col < xx_cols) {
if (Flag(FUTFHACK) && (c > 0x7F)) {
char utf_tmp[3];
size_t x;
if (c < 0xA0)
c = 0xFFFD;
x = wcxtomb(utf_tmp, c);
x_putc(utf_tmp[0]);
if (x > 1)
x_putc(utf_tmp[1]);
if (x > 2)
x_putc(utf_tmp[2]);
width = wcxwidth(c);
} else
x_putc(c);
switch (c) {
case 7:
break;
case '\r':
case '\n':
break;
case '\b':
x_col--;
break;
default:
x_col += width;
break;
}
}
if (x_adj_ok && (x_col < 0 || x_col >= (xx_cols - 2)))
x_adjust();
}
static void
x_e_putc3(const char **cp)
{
int width = 1, c = **(const unsigned char **)cp;
if (c == '\r' || c == '\n')
x_col = 0;
if (x_col < xx_cols) {
if (Flag(FUTFHACK) && (c > 0x7F)) {
char *cp2;
width = utf_widthadj(*cp, (const char **)&cp2);
while (*cp < cp2)
x_putc(*(*cp)++);
} else {
(*cp)++;
x_putc(c);
}
switch (c) {
case 7:
break;
case '\r':
case '\n':
break;
case '\b':
x_col--;
break;
default:
x_col += width;
break;
}
}
if (x_adj_ok && (x_col < 0 || x_col >= (xx_cols - 2)))
x_adjust();
}
static void
x_e_puts(const char *s)
{
int adj = x_adj_done;
while (*s && adj == x_adj_done)
x_e_putc3(&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)
{
int n = 0;
int first = 1;
c &= CHARMASK; /* strip command prefix */
for (; c >= 0 && ksh_isdigit(c); c = x_e_getc(), first = 0)
n = n * 10 + (c - '0');
if (c < 0 || first) {
x_e_putc2(7);
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 __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_putc2(7);
else {
xep = xbuf + len;
*xep = '\0';
xcp = xbp = xbuf;
x_redraw(oldsize);
if (ret > 0)
return x_newline('\n');
}
return KSTD;
}
static int
x_version(int c __unused)
{
char *o_xbuf = xbuf, *o_xend = xend;
char *o_xbp = xbp, *o_xep = xep, *o_xcp = xcp;
int lim = x_lastcp() - xbp;
char *v = str_save(KSH_VERSION, ATEMP);
int vlen;
xbuf = xbp = xcp = v;
xend = xep = v + (vlen = strlen(v));
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(vlen);
if (c < 0)
return KSTD;
/* This is what at&t ksh seems to do... Very bizarre */
if (c != ' ')
x_e_ungetc(c);
afree(v, ATEMP);
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 __unused)
{
char *rcp;
char *cp;
cp = *histptr;
if (!cp)
x_e_putc2(7);
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 {
char ch;
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++;
ch = *rcp;
*rcp = '\0';
x_ins(cp);
*rcp = ch;
}
return KSTD;
}
/* Uppercase N(1) words */
static int
x_fold_upper(int c __unused)
{
return x_fold_case('U');
}
/* Lowercase N(1) words */
static int
x_fold_lower(int c __unused)
{
return x_fold_case('L');
}
/* Lowercase N(1) words */
static int
x_fold_capitalise(int c __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 Capitalise words.
*
* RETURN VALUE:
* None
*/
static int
x_fold_case(int c)
{
char *cp = xcp;
if (cp == xep) {
x_e_putc2(7);
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 */
*cp = ksh_tolower(*cp);
else /* uppercase, capitalise */
*cp = ksh_toupper(*cp);
cp++;
}
/*
* now for the rest of the word
*/
while (cp != xep && !is_mfs(*cp)) {
if (c == 'U') /* uppercase */
*cp = ksh_toupper(*cp);
else /* lowercase, capitalise */
*cp = ksh_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; )
* x_bs2(cp = utf_backch(cp));
*
* Will position the cursor correctly on the screen.
*
* RETURN VALUE:
* cp or NULL
*/
static char *
x_lastcp(void)
{
if (!xlp_valid) {
int i = 0, j;
char *xlp2;
xlp = xbp;
while (xlp < xep) {
j = x_size2(xlp, &xlp2);
if ((i + j) > x_displen)
break;
i += j;
xlp = xlp2;
}
}
xlp_valid = true;
return (xlp);
}
static 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;
cb = tty_state;
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
cb.c_iflag &= ~(INLCR | ICRNL);
cb.c_lflag &= ~(ISIG | ICANON | ECHO);
#ifdef VLNEXT
/* osf/1 processes lnext when ~icanon */
cb.c_cc[VLNEXT] = _POSIX_VDISABLE;
#endif
/* sunos 4.1.x & osf/1 processes discard(flush) when ~icanon */
#ifdef VDISCARD
cb.c_cc[VDISCARD] = _POSIX_VDISABLE;
#endif
cb.c_cc[VTIME] = 0;
cb.c_cc[VMIN] = 1;
tcsetattr(tty_fd, TCSADRAIN, &cb);
/* 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 (edchars.erase >= 0) {
bind_if_not_bound(0, edchars.erase, XFUNC_del_back);
bind_if_not_bound(1, edchars.erase, XFUNC_del_bword);
}
if (edchars.kill >= 0)
bind_if_not_bound(0, edchars.kill, XFUNC_del_line);
if (edchars.werase >= 0)
bind_if_not_bound(0, edchars.werase, XFUNC_del_bword);
if (edchars.intr >= 0)
bind_if_not_bound(0, edchars.intr, XFUNC_abort);
if (edchars.quit >= 0)
bind_if_not_bound(0, edchars.quit, XFUNC_noop);
} else
tcsetattr(tty_fd, TCSADRAIN, &tty_state);
return prev;
}
#ifndef MKSH_NOVI
/* +++ vi editing mode +++ */
#define Ctrl(c) (c&0x1f)
struct edstate {
int winleft;
char *cbuf;
int cbufsize;
int linelen;
int cursor;
};
static int vi_hook(int);
static void vi_reset(char *, size_t);
static int nextstate(int);
static int vi_insert(int);
static int vi_cmd(int, const char *);
static int domove(int, const char *, int);
static int redo_insert(int);
static void yank_range(int, int);
static int bracktype(int);
static void save_cbuf(void);
static void restore_cbuf(void);
static void edit_reset(char *, size_t);
static int putbuf(const char *, int, int);
static void del_range(int, int);
static int findch(int, int, int, int);
static int forwword(int);
static int backword(int);
static int endword(int);
static int Forwword(int);
static int Backword(int);
static int Endword(int);
static int grabhist(int, int);
static int grabsearch(int, int, int, char *);
static void redraw_line(int);
static void refresh(int);
static int outofwin(void);
static void rewindow(void);
static int newcol(int, int);
static void display(char *, char *, int);
static void ed_mov_opt(int, char *);
static int expand_word(int);
static int complete_word(int, int);
static int print_expansions(struct edstate *, int);
#define char_len(c) ((c) < ' ' || (c) == 0x7F ? 2 : 1)
static void x_vi_zotc(int);
static void vi_error(void);
static void vi_macro_reset(void);
static int x_vi_putbuf(const char *, size_t);
#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 <space> ! " # $ % & ' */
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 /* <ESC> ^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 NUL byte followed
* by the name (letter) of the alias. The end of the buffer is marked by
* a double NUL. 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 */
static int
x_vi(char *buf, size_t len)
{
int c;
vi_reset(buf, len > LINE ? LINE : len);
pprompt(prompt, prompt_trunc);
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 || (ssize_t)len <= 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], locpat[SRCHLEN];
static int cmdlen, 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,
strlen(KSH_VERSION), 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 (ksh_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 (ksh_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 && ksh_isspace(locpat[n - 1]))
n--;
while (n > 0 && !ksh_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 < ' ' || 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)
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 = ktsearch(&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') &&
!ksh_isspace(es->cbuf[es->cursor])) {
while (ksh_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;
/* FALLTHRU */
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 {
int n;
if (es->cursor + argcnt > es->linelen)
return -1;
for (n = 0; n < argcnt; ++n)
es->cbuf[es->cursor + n] = cmd[1];
es->cursor += n - 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 && argcnt == 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);
}
if (argcnt)
shf_snprintf(es->cbuf, es->cbufsize, "%s %d",
"fc -e ${VISUAL:-${EDITOR:-vi}} --",
argcnt);
else
strlcpy(es->cbuf,
"fc -e ${VISUAL:-${EDITOR:-vi}} --",
es->cbufsize);
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;
/* FALLTHRU */
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) (ksh_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(" ", 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 (ksh_islower(*p)) {
modified = 1;
hnum = hlast;
*p = ksh_toupper(*p);
} else if (ksh_isupper(*p)) {
modified = 1;
hnum = hlast;
*p = ksh_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 kshs */
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, i = 0, t;
int ncursor = 0;
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 &&
ksh_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 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)
{
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);
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 (ksh_isalnux(es->cbuf[ncursor]))
while (ksh_isalnux(es->cbuf[ncursor]) &&
ncursor < es->linelen)
ncursor++;
else if (!ksh_isspace(es->cbuf[ncursor]))
while (!ksh_isalnux(es->cbuf[ncursor]) &&
!ksh_isspace(es->cbuf[ncursor]) &&
ncursor < es->linelen)
ncursor++;
while (ksh_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 && ksh_isspace(es->cbuf[ncursor]))
;
if (ncursor > 0) {
if (ksh_isalnux(es->cbuf[ncursor]))
while (--ncursor >= 0 &&
ksh_isalnux(es->cbuf[ncursor]))
;
else
while (--ncursor >= 0 &&
!ksh_isalnux(es->cbuf[ncursor]) &&
!ksh_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 &&
ksh_isspace(es->cbuf[ncursor]))
;
if (ncursor < es->linelen - 1) {
if (ksh_isalnux(es->cbuf[ncursor]))
while (++ncursor < es->linelen &&
ksh_isalnux(es->cbuf[ncursor]))
;
else
while (++ncursor < es->linelen &&
!ksh_isalnux(es->cbuf[ncursor]) &&
!ksh_isspace(es->cbuf[ncursor]))
;
ncursor--;
}
}
return ncursor;
}
static int
Forwword(int argcnt)
{
int ncursor;
ncursor = es->cursor;
while (ncursor < es->linelen && argcnt--) {
while (!ksh_isspace(es->cbuf[ncursor]) &&
ncursor < es->linelen)
ncursor++;
while (ksh_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 &&
ksh_isspace(es->cbuf[ncursor]))
;
while (ncursor >= 0 &&
!ksh_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 &&
ksh_isspace(es->cbuf[ncursor]))
;
if (ncursor < es->linelen - 1) {
while (++ncursor < es->linelen &&
!ksh_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_warningf("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 strcmp be strncmp? */
if (start != 0 && fwd && strcmp(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 newl)
{
(void)memset(wbuf[win], ' ', wbuf_len);
if (newl) {
x_putc('\r');
x_putc('\n');
}
pprompt(prompt, prompt_trunc);
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 ncol = 0;
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 (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');
pprompt(prompt, prompt_trunc);
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 cmd)
{
static struct edstate *buf;
int rval = 0;
int nwords;
int start, end;
char **words;
int i;
/* Undo previous expansion */
if (cmd == 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(" ", 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 cmd, int count)
{
static struct edstate *buf;
int rval;
int nwords;
int start, end;
char **words;
char *match;
int match_len;
int is_unique;
int is_command;
/* Undo previous completion */
if (cmd == 0 && expanded == COMPLETE && buf) {
print_expansions(buf, 0);
expanded = PRINT;
return 0;
}
if (cmd == 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 &&
strcmp(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 && match[match_len - 1] != '/')
rval = putbuf(" ", 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 *est, int cmd __unused)
{
int nwords;
int start, end;
char **words;
int is_command;
nwords = x_cf_glob(XCF_COMMAND_FILE | XCF_FULLPATH,
est->cbuf, est->linelen, est->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;
}
/* Similar to x_zotc(emacs.c), but no tab weirdness */
static void
x_vi_zotc(int c)
{
if (c < ' ' || c == 0x7f) {
x_putc('^');
c ^= '@';
}
x_putc(c);
}
static void
vi_error(void)
{
/* Beem out of any macros as soon as an error occurs */
vi_macro_reset();
x_putc(7);
x_flush();
}
static void
vi_macro_reset(void)
{
if (macro.p) {
afree(macro.buf, APERM);
memset((char *)&macro, 0, sizeof(macro));
}
}
#endif /* !MKSH_NOVI */
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