word
pl_unsetenv(term_t var)
{ char *n;
if ( PL_get_chars(var, &n, CVT_ALL) )
{ Unsetenv(n);
succeed;
}
return warning("unsetenv/1: instantiation fault");
}
static void
update_vars(Char *vp)
{
if (eq(vp, STRpath)) {
struct varent *p = adrof(STRpath);
if (p == NULL)
stderror(ERR_NAME | ERR_UNDVAR);
else {
exportpath(p->vec);
dohash(NULL, NULL);
}
}
else if (eq(vp, STRnoclobber)) {
struct varent *p = adrof(STRnoclobber);
if (p == NULL)
stderror(ERR_NAME | ERR_UNDVAR);
else
no_clobber = set_noclobber(p->vec);
}
else if (eq(vp, STRhistchars)) {
Char *pn = varval(vp);
HIST = *pn++;
if (HIST)
HISTSUB = *pn;
else
HISTSUB = HIST;
}
else if (eq(vp, STRpromptchars)) {
Char *pn = varval(vp);
PRCH = *pn++;
if (PRCH)
PRCHROOT = *pn;
else
PRCHROOT = PRCH;
}
else if (eq(vp, STRhistlit)) {
HistLit = 1;
}
else if (eq(vp, STRuser)) {
tsetenv(STRKUSER, varval(vp));
tsetenv(STRLOGNAME, varval(vp));
}
else if (eq(vp, STRgroup)) {
tsetenv(STRKGROUP, varval(vp));
}
else if (eq(vp, STRwordchars)) {
word_chars = varval(vp);
}
else if (eq(vp, STRloginsh)) {
loginsh = 1;
}
else if (eq(vp, STRanyerror)) {
anyerror = 1;
}
else if (eq(vp, STRsymlinks)) {
Char *pn = varval(vp);
if (eq(pn, STRignore))
symlinks = SYM_IGNORE;
else if (eq(pn, STRexpand))
symlinks = SYM_EXPAND;
else if (eq(pn, STRchase))
symlinks = SYM_CHASE;
else
symlinks = 0;
}
else if (eq(vp, STRterm)) {
Char *cp = varval(vp);
tsetenv(STRKTERM, cp);
#ifdef DOESNT_WORK_RIGHT
cp = getenv("TERMCAP");
if (cp && (*cp != '/')) /* if TERMCAP and not a path */
Unsetenv(STRTERMCAP);
#endif /* DOESNT_WORK_RIGHT */
GotTermCaps = 0;
if (noediting && Strcmp(cp, STRnetwork) != 0 &&
Strcmp(cp, STRunknown) != 0 && Strcmp(cp, STRdumb) != 0) {
editing = 1;
noediting = 0;
setNS(STRedit);
}
ed_Init(); /* reset the editor */
}
else if (eq(vp, STRhome)) {
Char *cp, *canon;
cp = Strsave(varval(vp)); /* get the old value back */
cleanup_push(cp, xfree);
/*
* convert to cononical pathname (possibly resolving symlinks)
*/
canon = dcanon(cp, cp);
cleanup_ignore(cp);
cleanup_until(cp);
cleanup_push(canon, xfree);
setcopy(vp, canon, VAR_READWRITE); /* have to save the new val */
/* and now mirror home with HOME */
tsetenv(STRKHOME, canon);
/* fix directory stack for new tilde home */
dtilde();
cleanup_until(canon);
}
else if (eq(vp, STRedit)) {
editing = 1;
noediting = 0;
/* PWP: add more stuff in here later */
}
else if (eq(vp, STRvimode)) {
VImode = 1;
update_wordchars();
}
else if (eq(vp, STRshlvl)) {
tsetenv(STRKSHLVL, varval(vp));
}
else if (eq(vp, STRignoreeof)) {
Char *cp;
numeof = 0;
for ((cp = varval(STRignoreeof)); cp && *cp; cp++) {
if (!Isdigit(*cp)) {
numeof = 0;
break;
}
numeof = numeof * 10 + *cp - '0';
}
if (numeof <= 0) numeof = 26; /* Sanity check */
}
else if (eq(vp, STRbackslash_quote)) {
bslash_quote = 1;
}
else if (eq(vp, STRcompat_expr)) {
compat_expr = 1;
}
else if (eq(vp, STRdirstack)) {
dsetstack();
}
else if (eq(vp, STRrecognize_only_executables)) {
tw_cmd_free();
}
else if (eq(vp, STRkillring)) {
SetKillRing((int)getn(varval(vp)));
}
else if (eq(vp, STRhistory)) {
sethistory((int)getn(varval(vp)));
}
#ifndef HAVENOUTMP
else if (eq(vp, STRwatch)) {
resetwatch();
}
#endif /* HAVENOUTMP */
else if (eq(vp, STRimplicitcd)) {
implicit_cd = ((eq(varval(vp), STRverbose)) ? 2 : 1);
}
else if (eq(vp, STRcdtohome)) {
cdtohome = 1;
}
#ifdef COLOR_LS_F
else if (eq(vp, STRcolor)) {
set_color_context();
}
#endif /* COLOR_LS_F */
#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
else if(eq(vp, CHECK_MBYTEVAR) || eq(vp, STRnokanji)) {
update_dspmbyte_vars();
}
#endif
#ifdef NLS_CATALOGS
else if (eq(vp, STRcatalog)) {
nlsclose();
nlsinit();
}
#if defined(FILEC) && defined(TIOCSTI)
else if (eq(vp, STRfilec))
filec = 1;
#endif
#endif /* NLS_CATALOGS */
}
/* tw_complete():
* Return the appropriate completion for the command
*
* valid completion strings are:
* p/<range>/<completion>/[<suffix>/] positional
* c/<pattern>/<completion>/[<suffix>/] current word ignore pattern
* C/<pattern>/<completion>/[<suffix>/] current word with pattern
* n/<pattern>/<completion>/[<suffix>/] next word
* N/<pattern>/<completion>/[<suffix>/] next-next word
*/
int
tw_complete(const Char *line, Char **word, Char **pat, int looking, eChar *suf)
{
Char *buf, **vec, **wl;
static Char nomatch[2] = { (Char) ~0, 0x00 };
const Char *ptr;
size_t wordno;
int n;
buf = Strsave(line);
cleanup_push(buf, xfree);
/* Single-character words, empty current word, terminating NULL */
wl = xmalloc(((Strlen(line) + 1) / 2 + 2) * sizeof (*wl));
cleanup_push(wl, xfree);
/* find the command */
if ((wl[0] = tw_tok(buf)) == NULL || wl[0] == INVPTR) {
cleanup_until(buf);
return TW_ZERO;
}
/*
* look for hardwired command completions using a globbing
* search and for arguments using a normal search.
*/
if ((vec = tw_find(wl[0], &completions, (looking == TW_COMMAND)))
== NULL) {
cleanup_until(buf);
return looking;
}
/* tokenize the line one more time :-( */
for (wordno = 1; (wl[wordno] = tw_tok(NULL)) != NULL &&
wl[wordno] != INVPTR; wordno++)
continue;
if (wl[wordno] == INVPTR) { /* Found a meta character */
cleanup_until(buf);
return TW_ZERO; /* de-activate completions */
}
#ifdef TDEBUG
{
size_t i;
for (i = 0; i < wordno; i++)
xprintf("'%s' ", short2str(wl[i]));
xprintf("\n");
}
#endif /* TDEBUG */
/* if the current word is empty move the last word to the next */
if (**word == '\0') {
wl[wordno] = *word;
wordno++;
}
wl[wordno] = NULL;
#ifdef TDEBUG
xprintf("\r\n");
xprintf(" w#: %lu\n", (unsigned long)wordno);
xprintf("line: %s\n", short2str(line));
xprintf(" cmd: %s\n", short2str(wl[0]));
xprintf("word: %s\n", short2str(*word));
xprintf("last: %s\n", wordno >= 2 ? short2str(wl[wordno-2]) : "n/a");
xprintf("this: %s\n", wordno >= 1 ? short2str(wl[wordno-1]) : "n/a");
#endif /* TDEBUG */
for (;vec != NULL && (ptr = vec[0]) != NULL; vec++) {
Char *ran, /* The pattern or range X/<range>/XXXX/ */
*com, /* The completion X/XXXXX/<completion>/ */
*pos = NULL; /* scratch pointer */
int cmd, res;
Char sep; /* the command and separator characters */
int exact;
if (ptr[0] == '\0')
continue;
#ifdef TDEBUG
xprintf("match %s\n", short2str(ptr));
#endif /* TDEBUG */
switch (cmd = ptr[0]) {
case 'N':
pos = (wordno < 3) ? nomatch : wl[wordno - 3];
break;
case 'n':
pos = (wordno < 2) ? nomatch : wl[wordno - 2];
break;
case 'c':
case 'C':
pos = (wordno < 1) ? nomatch : wl[wordno - 1];
break;
case 'p':
break;
default:
stderror(ERR_COMPINV, CGETS(27, 1, "command"), cmd);
return TW_ZERO;
}
sep = ptr[1];
if (!Ispunct(sep)) {
/* Truncates data if WIDE_STRINGS */
stderror(ERR_COMPINV, CGETS(27, 2, "separator"), (int)sep);
return TW_ZERO;
}
ptr = tw_dollar(&ptr[2], wl, wordno, &ran, sep,
CGETS(27, 3, "pattern"));
cleanup_push(ran, xfree);
if (ran[0] == '\0') /* check for empty pattern (disallowed) */
{
stderror(ERR_COMPINC, cmd == 'p' ? CGETS(27, 4, "range") :
CGETS(27, 3, "pattern"), "");
return TW_ZERO;
}
ptr = tw_dollar(ptr, wl, wordno, &com, sep,
CGETS(27, 5, "completion"));
cleanup_push(com, xfree);
if (*ptr != '\0') {
if (*ptr == sep)
*suf = CHAR_ERR;
else
*suf = *ptr;
}
else
*suf = '\0';
#ifdef TDEBUG
xprintf("command: %c\nseparator: %c\n", cmd, (int)sep);
xprintf("pattern: %s\n", short2str(ran));
xprintf("completion: %s\n", short2str(com));
xprintf("suffix: ");
switch (*suf) {
case 0:
xprintf("*auto suffix*\n");
break;
case CHAR_ERR:
xprintf("*no suffix*\n");
break;
default:
xprintf("%c\n", (int)*suf);
break;
}
#endif /* TDEBUG */
exact = 0;
switch (cmd) {
case 'p': /* positional completion */
#ifdef TDEBUG
xprintf("p: tw_pos(%s, %lu) = ", short2str(ran),
(unsigned long)wordno - 1);
xprintf("%d\n", tw_pos(ran, wordno - 1));
#endif /* TDEBUG */
if (!tw_pos(ran, wordno - 1)) {
cleanup_until(ran);
continue;
}
break;
case 'N': /* match with the next-next word */
case 'n': /* match with the next word */
exact = 1;
/*FALLTHROUGH*/
case 'c': /* match with the current word */
case 'C':
#ifdef TDEBUG
xprintf("%c: ", cmd);
#endif /* TDEBUG */
if ((n = tw_match(pos, ran, exact)) < 0) {
cleanup_until(ran);
continue;
}
if (cmd == 'c')
*word += n;
break;
default:
abort(); /* Cannot happen */
}
tsetenv(STRCOMMAND_LINE, line);
res = tw_result(com, pat);
Unsetenv(STRCOMMAND_LINE);
cleanup_until(buf);
return res;
}
cleanup_until(buf);
*suf = '\0';
return TW_ZERO;
} /* end tw_complete */
