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zsh/Src/Zle/zle_misc.c
Andrew Main b73d71105e 15734: zle -K option to select a keymap, and zle KEYMAP parameter to 
examine the current selection.
2001-09-03 01:39:19 +00:00

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/*
* zle_misc.c - miscellaneous editor routines
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 1992-1997 Paul Falstad
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and to distribute modified versions of this software for any
* purpose, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* In no event shall Paul Falstad or the Zsh Development Group be liable
* to any party for direct, indirect, special, incidental, or consequential
* damages arising out of the use of this software and its documentation,
* even if Paul Falstad and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Paul Falstad and the Zsh Development Group specifically disclaim any
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose. The software
* provided hereunder is on an "as is" basis, and Paul Falstad and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
#include "zle.mdh"
#include "zle_misc.pro"
/* insert a metafied string, with repetition and suffix removal */
/**/
void
doinsert(char *str)
{
char *s;
int len = ztrlen(str);
int c1 = *str == Meta ? STOUC(str[1])^32 : STOUC(*str);/* first character */
int neg = zmult < 0; /* insert *after* the cursor? */
int m = neg ? -zmult : zmult; /* number of copies to insert */
iremovesuffix(c1, 0);
invalidatelist();
if(insmode)
spaceinline(m * len);
else if(cs + m * len > ll)
spaceinline(cs + m * len - ll);
while(m--)
for(s = str; *s; s++)
line[cs++] = *s == Meta ? *++s ^ 32 : *s;
if(neg)
cs += zmult * len;
}
/**/
mod_export int
selfinsert(char **args)
{
char s[3], *p = s;
if(imeta(c)) {
*p++ = Meta;
c ^= 32;
}
*p++ = c;
*p = 0;
doinsert(s);
return 0;
}
/**/
int
selfinsertunmeta(char **args)
{
c &= 0x7f;
if (c == '\r')
c = '\n';
return selfinsert(args);
}
/**/
int
deletechar(char **args)
{
if (zmult < 0) {
int ret;
zmult = -zmult;
ret = backwarddeletechar(args);
zmult = -zmult;
return ret;
}
if (cs + zmult <= ll) {
cs += zmult;
backdel(zmult);
return 0;
}
return 1;
}
/**/
int
backwarddeletechar(char **args)
{
if (zmult < 0) {
int ret;
zmult = -zmult;
ret = deletechar(args);
zmult = -zmult;
return ret;
}
backdel(zmult > cs ? cs : zmult);
return 0;
}
/**/
int
killwholeline(char **args)
{
int i, fg, n = zmult;
if (n < 0)
return 1;
while (n--) {
if ((fg = (cs && cs == ll)))
cs--;
while (cs && line[cs - 1] != '\n')
cs--;
for (i = cs; i != ll && line[i] != '\n'; i++);
forekill(i - cs + (i != ll), fg);
}
clearlist = 1;
return 0;
}
/**/
int
killbuffer(char **args)
{
cs = 0;
forekill(ll, 0);
clearlist = 1;
return 0;
}
/**/
int
backwardkillline(char **args)
{
int i = 0, n = zmult;
if (n < 0) {
int ret;
zmult = -n;
ret = killline(args);
zmult = n;
return ret;
}
while (n--) {
if (cs && line[cs - 1] == '\n')
cs--, i++;
else
while (cs && line[cs - 1] != '\n')
cs--, i++;
}
forekill(i, 1);
clearlist = 1;
return 0;
}
/**/
int
gosmacstransposechars(char **args)
{
int cc;
if (cs < 2 || line[cs - 1] == '\n' || line[cs - 2] == '\n') {
if (cs == ll || line[cs] == '\n' ||
((cs + 1 == ll || line[cs + 1] == '\n') &&
(!cs || line[cs - 1] == '\n'))) {
return 1;
}
cs += (cs == 0 || line[cs - 1] == '\n') ? 2 : 1;
}
cc = line[cs - 2];
line[cs - 2] = line[cs - 1];
line[cs - 1] = cc;
return 0;
}
/**/
int
transposechars(char **args)
{
int cc, ct;
int n = zmult;
int neg = n < 0;
if (neg)
n = -n;
while (n--) {
if (!(ct = cs) || line[cs - 1] == '\n') {
if (ll == cs || line[cs] == '\n')
return 1;
if (!neg)
cs++;
ct++;
}
if (neg) {
if (cs && line[cs - 1] != '\n') {
cs--;
if (ct > 1 && line[ct - 2] != '\n')
ct--;
}
} else {
if (cs != ll && line[cs] != '\n')
cs++;
}
if (ct == ll || line[ct] == '\n')
ct--;
if (ct < 1 || line[ct - 1] == '\n')
return 1;
cc = line[ct - 1];
line[ct - 1] = line[ct];
line[ct] = cc;
}
return 0;
}
/**/
int
poundinsert(char **args)
{
cs = 0;
vifirstnonblank(zlenoargs);
if (line[cs] != '#') {
spaceinline(1);
line[cs] = '#';
cs = findeol();
while(cs != ll) {
cs++;
vifirstnonblank(zlenoargs);
spaceinline(1);
line[cs] = '#';
cs = findeol();
}
} else {
foredel(1);
cs = findeol();
while(cs != ll) {
cs++;
vifirstnonblank(zlenoargs);
if(line[cs] == '#')
foredel(1);
cs = findeol();
}
}
done = 1;
return 0;
}
/**/
int
acceptline(char **args)
{
done = 1;
return 0;
}
/**/
int
acceptandhold(char **args)
{
zpushnode(bufstack, metafy((char *)line, ll, META_DUP));
stackcs = cs;
done = 1;
return 0;
}
/**/
int
killline(char **args)
{
int i = 0, n = zmult;
if (n < 0) {
int ret;
zmult = -n;
ret = backwardkillline(args);
zmult = n;
return ret;
}
while (n--) {
if (line[cs] == '\n')
cs++, i++;
else
while (cs != ll && line[cs] != '\n')
cs++, i++;
}
backkill(i, 0);
clearlist = 1;
return 0;
}
/**/
int
killregion(char **args)
{
if (mark > ll)
mark = ll;
if (mark > cs)
forekill(mark - cs, 0);
else
backkill(cs - mark, 1);
return 0;
}
/**/
int
copyregionaskill(char **args)
{
if (mark > ll)
mark = ll;
if (mark > cs)
cut(cs, mark - cs, 0);
else
cut(mark, cs - mark, 1);
return 0;
}
static int kct, yankb, yanke;
/**/
int
yank(char **args)
{
Cutbuffer buf = &cutbuf;
int n = zmult;
if (n < 0)
return 1;
if (zmod.flags & MOD_VIBUF)
buf = &vibuf[zmod.vibuf];
if (!buf->buf)
return 1;
mark = cs;
yankb = cs;
while (n--) {
kct = kringnum;
spaceinline(buf->len);
memcpy((char *)line + cs, buf->buf, buf->len);
cs += buf->len;
yanke = cs;
}
return 0;
}
/**/
int
yankpop(char **args)
{
int cc;
if (!(lastcmd & ZLE_YANK) || !kring[kct].buf)
return 1;
cs = yankb;
foredel(yanke - yankb);
cc = kring[kct].len;
spaceinline(cc);
memcpy((char *)line + cs, kring[kct].buf, cc);
cs += cc;
yanke = cs;
kct = (kct + KRINGCT - 1) % KRINGCT;
return 0;
}
/**/
int
overwritemode(char **args)
{
insmode ^= 1;
return 0;
}
/**/
int
whatcursorposition(char **args)
{
char msg[100];
char *s = msg;
int bol = findbol();
int c = STOUC(line[cs]);
if (cs == ll)
strucpy(&s, "EOF");
else {
strucpy(&s, "Char: ");
switch (c) {
case ' ':
strucpy(&s, "SPC");
break;
case '\t':
strucpy(&s, "TAB");
break;
case '\n':
strucpy(&s, "LFD");
break;
default:
if (imeta(c)) {
*s++ = Meta;
*s++ = c ^ 32;
} else
*s++ = c;
}
sprintf(s, " (0%o, %d, 0x%x)", c, c, c);
s += strlen(s);
}
sprintf(s, " point %d of %d(%d%%) column %d", cs+1, ll+1,
ll ? 100 * cs / ll : 0, cs - bol);
showmsg(msg);
return 0;
}
/**/
int
undefinedkey(char **args)
{
return 1;
}
/**/
int
quotedinsert(char **args)
{
#ifndef HAS_TIO
struct sgttyb sob;
sob = shttyinfo.sgttyb;
sob.sg_flags = (sob.sg_flags | RAW) & ~ECHO;
ioctl(SHTTY, TIOCSETN, &sob);
#endif
c = getkey(0);
#ifndef HAS_TIO
zsetterm();
#endif
if (c < 0)
return 1;
else
return selfinsert(args);
}
/**/
int
digitargument(char **args)
{
int sign = (zmult < 0) ? -1 : 1;
/* allow metafied as well as ordinary digits */
if ((c & 0x7f) < '0' || (c & 0x7f) > '9')
return 1;
if (!(zmod.flags & MOD_TMULT))
zmod.tmult = 0;
if (zmod.flags & MOD_NEG) {
/* If we just had a negative argument, this is the digit, *
* rather than the -1 assumed by negargument() */
zmod.tmult = sign * (c & 0xf);
zmod.flags &= ~MOD_NEG;
} else
zmod.tmult = zmod.tmult * 10 + sign * (c & 0xf);
zmod.flags |= MOD_TMULT;
prefixflag = 1;
return 0;
}
/**/
int
negargument(char **args)
{
if (zmod.flags & MOD_TMULT)
return 1;
zmod.tmult = -1;
zmod.flags |= MOD_TMULT|MOD_NEG;
prefixflag = 1;
return 0;
}
/**/
int
universalargument(char **args)
{
int digcnt = 0, pref = 0, minus = 1, gotk;
if (*args) {
zmod.mult = atoi(*args);
zmod.flags |= MOD_MULT;
return 0;
}
while ((gotk = getkey(0)) != EOF) {
if (gotk == '-' && !digcnt) {
minus = -1;
digcnt++;
} else if (gotk >= '0' && gotk <= '9') {
pref = pref * 10 + (gotk & 0xf);
digcnt++;
} else {
ungetkey(gotk);
break;
}
}
if (digcnt)
zmod.tmult = minus * (pref ? pref : 1);
else
zmod.tmult *= 4;
zmod.flags |= MOD_TMULT;
prefixflag = 1;
return 0;
}
/**/
int
copyprevword(char **args)
{
int len, t0;
for (t0 = cs - 1; t0 >= 0; t0--)
if (iword(line[t0]))
break;
for (; t0 >= 0; t0--)
if (!iword(line[t0]))
break;
if (t0)
t0++;
len = cs - t0;
spaceinline(len);
memcpy((char *)&line[cs], (char *)&line[t0], len);
cs += len;
return 0;
}
/**/
int
copyprevshellword(char **args)
{
LinkList l;
LinkNode n;
int i;
char *p = NULL;
if ((l = bufferwords(NULL, NULL, &i)))
for (n = firstnode(l); n; incnode(n))
if (!i--) {
p = getdata(n);
break;
}
if (p) {
int len = strlen(p);
spaceinline(len);
memcpy(line + cs, p, len);
cs += len;
}
return 0;
}
/**/
int
sendbreak(char **args)
{
errflag = 1;
return 1;
}
/**/
int
quoteregion(char **args)
{
char *str;
size_t len;
if (mark > ll)
mark = ll;
if (mark < cs) {
int tmp = mark;
mark = cs;
cs = tmp;
}
str = (char *)hcalloc(len = mark - cs);
memcpy(str, (char *)&line[cs], len);
foredel(len);
str = makequote(str, &len);
spaceinline(len);
memcpy((char *)&line[cs], str, len);
mark = cs;
cs += len;
return 0;
}
/**/
int
quoteline(char **args)
{
char *str;
size_t len = ll;
str = makequote((char *)line, &len);
sizeline(len);
memcpy(line, str, len);
cs = ll = len;
return 0;
}
/**/
static char *
makequote(char *str, size_t *len)
{
int qtct = 0;
char *l, *ol;
char *end = str + *len;
for (l = str; l < end; l++)
if (*l == '\'')
qtct++;
*len += 2 + qtct*3;
l = ol = (char *)zhalloc(*len);
*l++ = '\'';
for (; str < end; str++)
if (*str == '\'') {
*l++ = '\'';
*l++ = '\\';
*l++ = '\'';
*l++ = '\'';
} else
*l++ = *str;
*l++ = '\'';
return ol;
}
static char *cmdbuf;
static LinkList cmdll;
static int cmdambig;
/**/
static void
scancompcmd(HashNode hn, int flags)
{
int l;
Thingy t = (Thingy) hn;
if(strpfx(cmdbuf, t->nam)) {
addlinknode(cmdll, t->nam);
l = pfxlen(peekfirst(cmdll), t->nam);
if (l < cmdambig)
cmdambig = l;
}
}
#define NAMLEN 60
/**/
Thingy
executenamedcommand(char *prmt)
{
Thingy cmd;
int len, l = strlen(prmt), feep = 0, listed = 0, curlist = 0;
int ols = (listshown && validlist), olll = lastlistlen;
char *ptr;
char *okeymap = ztrdup(curkeymapname);
clearlist = 1;
cmdbuf = zhalloc(l + NAMLEN + 2);
strcpy(cmdbuf, prmt);
statusline = cmdbuf;
selectkeymap("main", 1);
ptr = cmdbuf += l;
len = 0;
for (;;) {
*ptr = '_';
statusll = l + len + 1;
zrefresh();
if (!(cmd = getkeycmd()) || cmd == Th(z_sendbreak)) {
statusline = NULL;
selectkeymap(okeymap, 1);
zsfree(okeymap);
if ((listshown = ols)) {
showinglist = -2;
lastlistlen = olll;
} else if (listed)
clearlist = listshown = 1;
return NULL;
}
if(cmd == Th(z_clearscreen)) {
clearscreen(zlenoargs);
if (curlist) {
int zmultsav = zmult;
zmult = 1;
listlist(cmdll);
showinglist = 0;
zmult = zmultsav;
}
} else if(cmd == Th(z_redisplay)) {
redisplay(zlenoargs);
if (curlist) {
int zmultsav = zmult;
zmult = 1;
listlist(cmdll);
showinglist = 0;
zmult = zmultsav;
}
} else if(cmd == Th(z_viquotedinsert)) {
*ptr = '^';
zrefresh();
c = getkey(0);
if(c == EOF || !c || len == NAMLEN)
feep = 1;
else
*ptr++ = c, len++, curlist = 0;
} else if(cmd == Th(z_quotedinsert)) {
if((c = getkey(0)) == EOF || !c || len == NAMLEN)
feep = 1;
else
*ptr++ = c, len++, curlist = 0;
} else if(cmd == Th(z_backwarddeletechar) ||
cmd == Th(z_vibackwarddeletechar)) {
if (len)
len--, ptr--, curlist = 0;
} else if(cmd == Th(z_killregion) || cmd == Th(z_backwardkillword) ||
cmd == Th(z_vibackwardkillword)) {
if (len)
curlist = 0;
while (len && (len--, *--ptr != '-'));
} else if(cmd == Th(z_killwholeline) || cmd == Th(z_vikillline) ||
cmd == Th(z_backwardkillline)) {
len = 0;
ptr = cmdbuf;
if (listed)
clearlist = listshown = 1;
curlist = 0;
} else {
if(cmd == Th(z_acceptline) || cmd == Th(z_vicmdmode)) {
Thingy r;
unambiguous:
*ptr = 0;
r = rthingy(cmdbuf);
if (!(r->flags & DISABLED)) {
unrefthingy(r);
statusline = NULL;
selectkeymap(okeymap, 1);
zsfree(okeymap);
if ((listshown = ols)) {
showinglist = -2;
lastlistlen = olll;
} else if (listed)
clearlist = listshown = 1;
return r;
}
unrefthingy(r);
}
if(cmd == Th(z_selfinsertunmeta)) {
c &= 0x7f;
if(c == '\r')
c = '\n';
cmd = Th(z_selfinsert);
}
if (cmd == Th(z_listchoices) || cmd == Th(z_deletecharorlist) ||
cmd == Th(z_expandorcomplete) || cmd == Th(z_completeword) ||
cmd == Th(z_expandorcompleteprefix) || cmd == Th(z_vicmdmode) ||
cmd == Th(z_acceptline) || c == ' ' || c == '\t') {
cmdambig = 100;
cmdll = newlinklist();
*ptr = 0;
scanhashtable(thingytab, 1, 0, DISABLED, scancompcmd, 0);
if (empty(cmdll)) {
feep = 1;
if (listed)
clearlist = listshown = 1;
curlist = 0;
} else if (cmd == Th(z_listchoices) ||
cmd == Th(z_deletecharorlist)) {
int zmultsav = zmult;
*ptr = '_';
statusll = l + len + 1;
zmult = 1;
listlist(cmdll);
listed = curlist = 1;
showinglist = 0;
zmult = zmultsav;
} else if (!nextnode(firstnode(cmdll))) {
strcpy(ptr = cmdbuf, peekfirst(cmdll));
ptr += (len = strlen(ptr));
if(cmd == Th(z_acceptline) || cmd == Th(z_vicmdmode))
goto unambiguous;
} else {
strcpy(cmdbuf, peekfirst(cmdll));
ptr = cmdbuf + cmdambig;
*ptr = '_';
if (isset(AUTOLIST) &&
!(isset(LISTAMBIGUOUS) && cmdambig > len)) {
int zmultsav = zmult;
if (isset(LISTBEEP))
feep = 1;
statusll = l + cmdambig + 1;
zmult = 1;
listlist(cmdll);
listed = curlist = 1;
showinglist = 0;
zmult = zmultsav;
}
len = cmdambig;
}
} else {
if (len == NAMLEN || icntrl(c) || cmd != Th(z_selfinsert))
feep = 1;
else
*ptr++ = c, len++, curlist = 0;
}
}
if (feep)
handlefeep(zlenoargs);
feep = 0;
}
}
/*****************/
/* Suffix system */
/*****************/
/*
* The completion system sometimes tentatively adds a suffix to a word,
* which can be removed depending on what is inserted next. These
* functions provide the capability to handle a removable suffix.
*
* Any removable suffix consists of characters immediately before the
* cursor. Whether it is removed depends on the next editing action.
* There can be more than one suffix simultaneously present, with
* different actions deleting different numbers of characters.
*
* If the next editing action changes the buffer other than by inserting
* characters, normally the suffix should be removed so as to leave a
* meaningful complete word. The behaviour should be the same if the
* next character inserted is a word separator. If the next character
* reasonably belongs where it is typed, or if the next editing action
* is a deletion, the suffix should not be removed. Other reasons for
* suffix removal may have other behaviour.
*
* In order to maintain a consistent state, after a suffix has been added
* the table *must* be zeroed, one way or another, before the buffer is
* changed. If the suffix is not being removed, call fixsuffix() to
* indicate that it is being permanently fixed.
*/
/* Length of suffix to remove when inserting each possible character value. *
* suffixlen[256] is the length to remove for non-insertion editing actions. */
/**/
mod_export int suffixlen[257];
/* Shell function to call to remove the suffix. */
/**/
static char *suffixfunc;
/* Set up suffix: the last n characters are a suffix that should be *
* removed in the usual word end conditions. */
/**/
mod_export void
makesuffix(int n)
{
suffixlen[256] = suffixlen[' '] = suffixlen['\t'] = suffixlen['\n'] =
suffixlen[';'] = suffixlen['&'] = suffixlen['|'] = n;
}
/* Set up suffix for parameter names: the last n characters are a suffix *
* that should be removed if the next character is one of the ones that *
* needs to go immediately after the parameter name. br indicates that *
* the name is in braces (${PATH} instead of $PATH), so the extra *
* characters that can only be used in braces are included. */
/**/
mod_export void
makeparamsuffix(int br, int n)
{
if(br || unset(KSHARRAYS))
suffixlen[':'] = suffixlen['['] = n;
if(br) {
suffixlen['#'] = suffixlen['%'] = suffixlen['?'] = n;
suffixlen['-'] = suffixlen['+'] = suffixlen['='] = n;
/*{*/ suffixlen['}'] = suffixlen['/'] = n;
}
}
/* Set up suffix given a string containing the characters on which to *
* remove the suffix. */
/**/
mod_export void
makesuffixstr(char *f, char *s, int n)
{
if (f) {
zsfree(suffixfunc);
suffixfunc = ztrdup(f);
suffixlen[0] = n;
} else if (s) {
int inv, i, v, z = 0;
if (*s == '^' || *s == '!') {
inv = 1;
s++;
} else
inv = 0;
s = getkeystring(s, &i, 5, &z);
s = metafy(s, i, META_USEHEAP);
if (inv) {
v = 0;
for (i = 0; i < 257; i++)
suffixlen[i] = n;
} else
v = n;
if (z)
suffixlen[256] = v;
while (*s) {
if (s[1] == '-' && s[2]) {
int b = (int) *s, e = (int) s[2];
while (b <= e)
suffixlen[b++] = v;
s += 2;
} else
suffixlen[STOUC(*s)] = v;
s++;
}
} else
makesuffix(n);
}
/* Remove suffix, if there is one, when inserting character c. */
/**/
mod_export void
iremovesuffix(int c, int keep)
{
if (suffixfunc) {
Eprog prog = getshfunc(suffixfunc);
if (prog != &dummy_eprog) {
LinkList args = newlinklist();
char buf[20];
int osc = sfcontext;
sprintf(buf, "%d", suffixlen[0]);
addlinknode(args, suffixfunc);
addlinknode(args, buf);
startparamscope();
makezleparams(0);
sfcontext = SFC_COMPLETE;
doshfunc(suffixfunc, prog, args, 0, 1);
sfcontext = osc;
endparamscope();
}
zsfree(suffixfunc);
suffixfunc = NULL;
} else {
int sl = suffixlen[c];
if(sl) {
backdel(sl);
if (!keep)
invalidatelist();
}
}
fixsuffix();
}
/* Fix the suffix in place, if there is one, making it non-removable. */
/**/
mod_export void
fixsuffix(void)
{
memset(suffixlen, 0, sizeof(suffixlen));
}
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