static void
fixDolMod(void)
{
eChar c;
c = DgetC(0);
if (c == ':') {
do {
c = DgetC(0), dolmcnt = 1, dol_flag_a = 0;
if (c == 'g' || c == 'a') {
if (c == 'g')
dolmcnt = INT_MAX;
else
dol_flag_a = 1;
c = DgetC(0);
}
if ((c == 'g' && dolmcnt != INT_MAX) ||
(c == 'a' && dol_flag_a == 0)) {
if (c == 'g')
dolmcnt = INT_MAX;
else
dol_flag_a = 1;
c = DgetC(0);
}
if (c == 's') { /* [eichin:19910926.0755EST] */
int delimcnt = 2;
eChar delim = DgetC(0);
Strbuf_append1(&dolmod, (Char) c);
Strbuf_append1(&dolmod, (Char) delim);
if (delim == DEOF || !delim || letter(delim)
|| Isdigit(delim) || any(" \t\n", delim)) {
seterror(ERR_BADSUBST);
break;
}
while ((c = DgetC(0)) != DEOF) {
Strbuf_append1(&dolmod, (Char) c);
if(c == delim) delimcnt--;
if(!delimcnt) break;
}
if(delimcnt) {
seterror(ERR_BADSUBST);
break;
}
continue;
}
if (!any("luhtrqxes", c))
stderror(ERR_BADMOD, (int)c);
Strbuf_append1(&dolmod, (Char) c);
if (c == 'q')
dolmcnt = INT_MAX;
}
while ((c = DgetC(0)) == ':');
unDredc(c);
}
else
unDredc(c);
}
const Char *
quote_meta(struct Strbuf *buf, const Char *s)
{
buf->len = 0;
while (*s != '\0') {
if (cmap(*s, _META | _DOL | _QF | _QB | _ESC | _GLOB))
Strbuf_append1(buf, '\\');
Strbuf_append1(buf, *s++);
}
Strbuf_terminate(buf);
return buf->s;
}
/*
* Pack up more characters in this word
*/
static int
Dpack(struct Strbuf *wbuf)
{
eChar c;
for (;;) {
c = DgetC(DODOL);
if (c == '\\') {
c = DgetC(0);
if (c == DEOF) {
unDredc(c);
return 1;
}
if (c == '\n')
c = ' ';
else
c |= QUOTE;
}
if (c == DEOF) {
unDredc(c);
return 1;
}
if (cmap(c, _SP | _NL | _QF | _QB)) { /* sp \t\n'"` */
unDgetC(c);
if (cmap(c, QUOTES))
return 0;
return 1;
}
Strbuf_append1(wbuf, (Char) c);
}
}
/* PrintXKey():
* Print the binding associated with Xkey key.
* Print entire Xmap if null
*/
void
PrintXkey(const CStr *key)
{
struct Strbuf buf = Strbuf_INIT;
CStr cs;
if (key) {
cs.buf = key->buf;
cs.len = key->len;
}
else {
cs.buf = STRNULL;
cs.len = 0;
}
/* do nothing if Xmap is empty and null key specified */
if (Xmap == NULL && cs.len == 0)
return;
Strbuf_append1(&buf, '"');
cleanup_push(&buf, Strbuf_cleanup);
if (Lookup(&buf, &cs, Xmap) <= -1)
/* key is not bound */
xprintf(CGETS(9, 4, "Unbound extended key \"%S\"\n"), cs.buf);
cleanup_until(&buf);
}
static void
Enumerate(struct Strbuf *buf, const XmapNode *ptr)
{
size_t old_len;
if (ptr == NULL) {
#ifdef DEBUG_EDIT
xprintf(CGETS(9, 6, "Enumerate: BUG!! Null ptr passed\n!"));
#endif
return;
}
old_len = buf->len;
unparsech(buf, ptr->ch); /* put this char at end of string */
if (ptr->next == NULL) {
/* print this Xkey and function */
Strbuf_append1(buf, '"');
Strbuf_terminate(buf);
printOne(buf->s, &ptr->val, ptr->type);
}
else
Enumerate(buf, ptr->next);
/* go to sibling if there is one */
if (ptr->sibling) {
buf->len = old_len;
Enumerate(buf, ptr->sibling);
}
}
Char *
expand_lex(const struct wordent *sp0, int from, int to)
{
struct Strbuf buf = Strbuf_INIT;
const struct wordent *sp;
Char *s;
Char prev_c;
int i;
prev_c = '\0';
if (!sp0 || (sp = sp0->next) == sp0 || sp == (sp0 = sp0->prev))
return Strbuf_finish(&buf); /* null lex */
for (i = 0; ; i++) {
if ((i >= from) && (i <= to)) { /* if in range */
for (s = sp->word; *s; s++) {
/*
* bugfix by Michael Bloom: anything but the current history
* character {(PWP) and backslash} seem to be dealt with
* elsewhere.
*/
if ((*s & QUOTE)
&& (((*s & TRIM) == HIST && HIST != '\0') ||
(((*s & TRIM) == '\'') && (prev_c != '\\')) ||
(((*s & TRIM) == '\"') && (prev_c != '\\')) ||
(((*s & TRIM) == '\\') && (prev_c != '\\')))) {
Strbuf_append1(&buf, '\\');
}
Strbuf_append1(&buf, *s & TRIM);
prev_c = *s;
}
Strbuf_append1(&buf, ' ');
}
sp = sp->next;
if (sp == sp0)
break;
}
if (buf.len != 0)
buf.len--; /* get rid of trailing space */
return Strbuf_finish(&buf);
}
Char *
blkexpand(Char *const *av)
{
struct Strbuf buf = Strbuf_INIT;
for (; *av; av++) {
Strbuf_append(&buf, *av);
if (av[1])
Strbuf_append1(&buf, ' ');
}
return Strbuf_finish(&buf);
}
static void
exportpath(Char **val)
{
struct Strbuf buf = Strbuf_INIT;
Char *exppath;
if (val)
while (*val) {
Strbuf_append(&buf, *val++);
if (*val == 0 || eq(*val, STRRparen))
break;
Strbuf_append1(&buf, PATHSEP);
}
exppath = Strbuf_finish(&buf);
cleanup_push(exppath, xfree);
tsetenv(STRKPATH, exppath);
cleanup_until(exppath);
}
/* Lookup():
* look for the string starting at node ptr.
* Print if last node
*/
static int
Lookup(struct Strbuf *buf, const CStr *str, const XmapNode *ptr)
{
if (ptr == NULL)
return (-1); /* cannot have null ptr */
if (str->len == 0) {
/* no more chars in string. Enumerate from here. */
Enumerate(buf, ptr);
return (0);
}
else {
/* If match put this char into buf. Recurse */
if (ptr->ch == *(str->buf)) {
/* match found */
unparsech(buf, ptr->ch);
if (ptr->next != NULL) {
/* not yet at leaf */
CStr tstr;
tstr.buf = str->buf + 1;
tstr.len = str->len - 1;
return (Lookup(buf, &tstr, ptr->next));
}
else {
/* next node is null so key should be complete */
if (str->len == 1) {
Strbuf_append1(buf, '"');
Strbuf_terminate(buf);
printOne(buf->s, &ptr->val, ptr->type);
return (0);
}
else
return (-1);/* mismatch -- string still has chars */
}
}
else {
/* no match found try sibling */
if (ptr->sibling)
return (Lookup(buf, str, ptr->sibling));
else
return (-1);
}
}
}
/* tw_dollar():
* Expand $<n> args in buffer
*/
static const Char *
tw_dollar(const Char *str, Char **wl, size_t nwl, Char **result, Char sep,
const char *msg)
{
struct Strbuf buf = Strbuf_INIT;
Char *res;
const Char *sp;
for (sp = str; *sp && *sp != sep;)
if (sp[0] == '$' && sp[1] == ':' && Isdigit(sp[sp[2] == '-' ? 3 : 2])) {
int num, neg = 0;
sp += 2;
if (*sp == '-') {
neg = 1;
sp++;
}
for (num = *sp++ - '0'; Isdigit(*sp); num += 10 * num + *sp++ - '0')
continue;
if (neg)
num = nwl - num - 1;
if (num >= 0 && (size_t)num < nwl)
Strbuf_append(&buf, wl[num]);
}
else
Strbuf_append1(&buf, *sp++);
res = Strbuf_finish(&buf);
if (*sp++ == sep) {
*result = res;
return sp;
}
xfree(res);
/* Truncates data if WIDE_STRINGS */
stderror(ERR_COMPMIS, (int)sep, msg, short2str(str));
return --sp;
} /* end tw_dollar */
/* dnormalize():
* The path will be normalized if it
* 1) is "..",
* 2) or starts with "../",
* 3) or ends with "/..",
* 4) or contains the string "/../",
* then it will be normalized, unless those strings are quoted.
* Otherwise, a copy is made and sent back.
*/
Char *
dnormalize(const Char *cp, int expnd)
{
/* return true if dp is of the form "../xxx" or "/../xxx" */
#define IS_DOTDOT(sp, p) (ISDOTDOT(p) && ((p) == (sp) || *((p) - 1) == '/'))
#define IS_DOT(sp, p) (ISDOT(p) && ((p) == (sp) || *((p) - 1) == '/'))
#ifdef S_IFLNK
if (expnd) {
struct Strbuf buf = Strbuf_INIT;
int dotdot = 0;
Char *dp, *cwd;
const Char *start = cp;
# ifdef HAVE_SLASHSLASH
int slashslash;
# endif /* HAVE_SLASHSLASH */
/*
* count the number of "../xxx" or "xxx/../xxx" in the path
*/
for ( ; *cp && *(cp + 1); cp++)
if (IS_DOTDOT(start, cp))
dotdot++;
/*
* if none, we are done.
*/
if (dotdot == 0)
return (Strsave(start));
# ifdef notdef
struct stat sb;
/*
* We disable this test because:
* cd /tmp; mkdir dir1 dir2; cd dir2; ln -s /tmp/dir1; cd dir1;
* echo ../../dir1 does not expand. We had enabled this before
* because it was bothering people with expansions in compilation
* lines like -I../../foo. Maybe we need some kind of finer grain
* control?
*
* If the path doesn't exist, we are done too.
*/
if (lstat(short2str(start), &sb) != 0 && errno == ENOENT)
return (Strsave(start));
# endif
cwd = xmalloc((Strlen(dcwd->di_name) + 3) * sizeof(Char));
(void) Strcpy(cwd, dcwd->di_name);
/*
* If the path starts with a slash, we are not relative to
* the current working directory.
*/
if (ABSOLUTEP(start))
*cwd = '\0';
# ifdef HAVE_SLASHSLASH
slashslash = cwd[0] == '/' && cwd[1] == '/';
# endif /* HAVE_SLASHSLASH */
/*
* Ignore . and count ..'s
*/
cp = start;
do {
dotdot = 0;
buf.len = 0;
while (*cp)
if (IS_DOT(start, cp)) {
if (*++cp)
cp++;
}
else if (IS_DOTDOT(start, cp)) {
if (buf.len != 0)
break; /* finish analyzing .././../xxx/[..] */
dotdot++;
cp += 2;
if (*cp)
cp++;
}
else
Strbuf_append1(&buf, *cp++);
Strbuf_terminate(&buf);
while (dotdot > 0)
if ((dp = Strrchr(cwd, '/')) != NULL) {
# ifdef HAVE_SLASHSLASH
if (dp == &cwd[1])
slashslash = 1;
# endif /* HAVE_SLASHSLASH */
*dp = '\0';
dotdot--;
}
else
break;
if (!*cwd) { /* too many ..'s, starts with "/" */
cwd[0] = '/';
# ifdef HAVE_SLASHSLASH
/*
* Only append another slash, if already the former cwd
* was in a double-slash path.
*/
cwd[1] = slashslash ? '/' : '\0';
cwd[2] = '\0';
# else /* !HAVE_SLASHSLASH */
cwd[1] = '\0';
# endif /* HAVE_SLASHSLASH */
}
# ifdef HAVE_SLASHSLASH
else if (slashslash && cwd[1] == '\0') {
cwd[1] = '/';
cwd[2] = '\0';
}
# endif /* HAVE_SLASHSLASH */
if (buf.len != 0) {
size_t i;
i = Strlen(cwd);
if (TRM(cwd[i - 1]) != '/') {
cwd[i++] = '/';
cwd[i] = '\0';
}
dp = Strspl(cwd, TRM(buf.s[0]) == '/' ? &buf.s[1] : buf.s);
xfree(cwd);
cwd = dp;
i = Strlen(cwd) - 1;
if (TRM(cwd[i]) == '/')
cwd[i] = '\0';
}
/* Reduction of ".." following the stuff we collected in buf
* only makes sense if the directory item in buf really exists.
* Avoid reduction of "-I../.." (typical compiler call) to ""
* or "/usr/nonexistant/../bin" to "/usr/bin":
*/
if (cwd[0]) {
struct stat exists;
if (0 != stat(short2str(cwd), &exists)) {
xfree(buf.s);
xfree(cwd);
return Strsave(start);
}
}
} while (*cp != '\0');
xfree(buf.s);
return cwd;
}
#endif /* S_IFLNK */
return Strsave(cp);
}
/*
* Get a word. This routine is analogous to the routine
* word() in sh.lex.c for the main lexical input. One difference
* here is that we don't get a newline to terminate our expansion.
* Rather, DgetC will return a DEOF when we hit the end-of-input.
*/
static int
Dword(struct blk_buf *bb)
{
eChar c, c1;
struct Strbuf *wbuf = Strbuf_alloc();
int dolflg;
int sofar = 0;
Char *str;
cleanup_push(wbuf, Strbuf_free);
for (;;) {
c = DgetC(DODOL);
switch (c) {
case DEOF:
if (sofar == 0) {
cleanup_until(wbuf);
return (0);
}
/* finish this word and catch the code above the next time */
unDredc(c);
/*FALLTHROUGH*/
case '\n':
goto end;
case ' ':
case '\t':
continue;
case '`':
/* We preserve ` quotations which are done yet later */
Strbuf_append1(wbuf, (Char) c);
/*FALLTHROUGH*/
case '\'':
case '"':
/*
* Note that DgetC never returns a QUOTES character from an
* expansion, so only true input quotes will get us here or out.
*/
c1 = c;
dolflg = c1 == '"' ? DODOL : 0;
for (;;) {
c = DgetC(dolflg);
if (c == c1)
break;
if (c == '\n' || c == DEOF) {
cleanup_until(bb);
stderror(ERR_UNMATCHED, (int)c1);
}
if ((c & (QUOTE | TRIM)) == ('\n' | QUOTE)) {
if (wbuf->len != 0 && (wbuf->s[wbuf->len - 1] & TRIM) == '\\')
wbuf->len--;
}
switch (c1) {
case '"':
/*
* Leave any `s alone for later. Other chars are all
* quoted, thus `...` can tell it was within "...".
*/
Strbuf_append1(wbuf, c == '`' ? '`' : c | QUOTE);
break;
case '\'':
/* Prevent all further interpretation */
Strbuf_append1(wbuf, c | QUOTE);
break;
case '`':
/* Leave all text alone for later */
Strbuf_append1(wbuf, (Char) c);
break;
default:
break;
}
}
if (c1 == '`')
Strbuf_append1(wbuf, '`');
sofar = 1;
if (Dpack(wbuf) != 0)
goto end;
continue;
case '\\':
c = DgetC(0); /* No $ subst! */
if (c == '\n' || c == DEOF)
continue;
c |= QUOTE;
break;
default:
break;
}
unDgetC(c);
sofar = 1;
if (Dpack(wbuf) != 0)
goto end;
}
end:
cleanup_ignore(wbuf);
cleanup_until(wbuf);
str = Strbuf_finish(wbuf);
bb_append(bb, str);
xfree(wbuf);
return 1;
}
/*ARGSUSED*/
void
dolist(Char **v, struct command *c)
{
Char **globbed;
int i, k, ret = 0;
struct stat st;
USE(c);
if (*++v == NULL) {
struct Strbuf word = Strbuf_INIT;
Strbuf_terminate(&word);
cleanup_push(&word, Strbuf_cleanup);
(void) t_search(&word, LIST, TW_ZERO, 0, STRNULL, 0);
cleanup_until(&word);
return;
}
v = glob_all_or_error(v);
globbed = v;
cleanup_push(globbed, blk_cleanup);
for (k = 0; v[k] != NULL && v[k][0] != '-'; k++)
continue;
if (v[k]) {
/*
* We cannot process a flag therefore we let ls do it right.
*/
Char *lspath;
struct command *t;
struct wordent cmd, *nextword, *lastword;
Char *cp;
struct varent *vp;
if (setintr) {
pintr_disabled++;
cleanup_push(&pintr_disabled, disabled_cleanup);
}
if (seterr) {
xfree(seterr);
seterr = NULL;
}
lspath = STRls;
STRmCF[1] = 'C';
STRmCF[3] = '\0';
/* Look at listflags, to add -A to the flags, to get a path
of ls if necessary */
if ((vp = adrof(STRlistflags)) != NULL && vp->vec != NULL &&
vp->vec[0] != STRNULL) {
if (vp->vec[1] != NULL && vp->vec[1][0] != '\0')
lspath = vp->vec[1];
for (cp = vp->vec[0]; *cp; cp++)
switch (*cp) {
case 'x':
STRmCF[1] = 'x';
break;
case 'a':
STRmCF[3] = 'a';
break;
case 'A':
STRmCF[3] = 'A';
break;
default:
break;
}
}
cmd.word = STRNULL;
lastword = &cmd;
nextword = xcalloc(1, sizeof cmd);
nextword->word = Strsave(lspath);
lastword->next = nextword;
nextword->prev = lastword;
lastword = nextword;
nextword = xcalloc(1, sizeof cmd);
nextword->word = Strsave(STRmCF);
lastword->next = nextword;
nextword->prev = lastword;
#if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
if (dspmbyte_ls) {
lastword = nextword;
nextword = xcalloc(1, sizeof cmd);
nextword->word = Strsave(STRmmliteral);
lastword->next = nextword;
nextword->prev = lastword;
}
#endif
#ifdef COLOR_LS_F
if (color_context_ls) {
lastword = nextword;
nextword = xcalloc(1, sizeof cmd);
nextword->word = Strsave(STRmmcolormauto);
lastword->next = nextword;
nextword->prev = lastword;
}
#endif /* COLOR_LS_F */
lastword = nextword;
for (cp = *v; cp; cp = *++v) {
nextword = xcalloc(1, sizeof cmd);
nextword->word = quote(Strsave(cp));
lastword->next = nextword;
nextword->prev = lastword;
lastword = nextword;
}
lastword->next = &cmd;
cmd.prev = lastword;
cleanup_push(&cmd, lex_cleanup);
/* build a syntax tree for the command. */
t = syntax(cmd.next, &cmd, 0);
cleanup_push(t, syntax_cleanup);
if (seterr)
stderror(ERR_OLD);
/* expand aliases like process() does */
/* alias(&cmd); */
/* execute the parse tree. */
execute(t, tpgrp > 0 ? tpgrp : -1, NULL, NULL, FALSE);
/* done. free the lex list and parse tree. */
cleanup_until(&cmd);
if (setintr)
cleanup_until(&pintr_disabled);
}
else {
Char *dp, *tmp;
struct Strbuf buf = Strbuf_INIT;
cleanup_push(&buf, Strbuf_cleanup);
for (k = 0, i = 0; v[k] != NULL; k++) {
tmp = dnormalize(v[k], symlinks == SYM_IGNORE);
cleanup_push(tmp, xfree);
dp = Strend(tmp) - 1;
if (*dp == '/' && dp != tmp)
#ifdef apollo
if (dp != &tmp[1])
#endif /* apollo */
*dp = '\0';
if (stat(short2str(tmp), &st) == -1) {
int err;
err = errno;
if (k != i) {
if (i != 0)
xputchar('\n');
print_by_column(STRNULL, &v[i], k - i, FALSE);
}
haderr = 1;
xprintf("%S: %s.\n", tmp, strerror(err));
haderr = 0;
i = k + 1;
ret = 1;
}
else if (S_ISDIR(st.st_mode)) {
Char *cp;
if (k != i) {
if (i != 0)
xputchar('\n');
print_by_column(STRNULL, &v[i], k - i, FALSE);
}
if (k != 0 && v[1] != NULL)
xputchar('\n');
xprintf("%S:\n", tmp);
buf.len = 0;
for (cp = tmp; *cp; cp++)
Strbuf_append1(&buf, (*cp | QUOTE));
Strbuf_terminate(&buf);
dp = &buf.s[buf.len - 1];
if (
#ifdef WINNT_NATIVE
(*dp != (Char) (':' | QUOTE)) &&
#endif /* WINNT_NATIVE */
(*dp != (Char) ('/' | QUOTE))) {
Strbuf_append1(&buf, '/');
Strbuf_terminate(&buf);
} else
*dp &= TRIM;
(void) t_search(&buf, LIST, TW_ZERO, 0, STRNULL, 0);
i = k + 1;
}
cleanup_until(tmp);
}
cleanup_until(&buf);
if (k != i) {
if (i != 0)
xputchar('\n');
print_by_column(STRNULL, &v[i], k - i, FALSE);
}
if (ret)
stderror(ERR_SILENT);
}
cleanup_until(globbed);
}
/*
* Handle the multitudinous $ expansion forms.
* Ugh.
*/
static void
Dgetdol(void)
{
Char *np;
struct varent *vp = NULL;
struct Strbuf *name = Strbuf_alloc();
eChar c, sc;
int subscr = 0, lwb = 1, upb = 0;
int dimen = 0, bitset = 0, length = 0;
static Char *dolbang = NULL;
cleanup_push(name, Strbuf_free);
dolmod.len = dolmcnt = dol_flag_a = 0;
c = sc = DgetC(0);
if (c == DEOF) {
stderror(ERR_SYNTAX);
return;
}
if (c == '{')
c = DgetC(0); /* sc is { to take } later */
if ((c & TRIM) == '#')
dimen++, c = DgetC(0); /* $# takes dimension */
else if (c == '?')
bitset++, c = DgetC(0); /* $? tests existence */
else if (c == '%')
length++, c = DgetC(0); /* $% returns length in chars */
switch (c) {
case '!':
if (dimen || bitset || length)
stderror(ERR_SYNTAX);
if (backpid != 0) {
xfree(dolbang);
setDolp(dolbang = putn((tcsh_number_t)backpid));
}
cleanup_until(name);
goto eatbrac;
case '$':
if (dimen || bitset || length)
stderror(ERR_SYNTAX);
setDolp(doldol);
cleanup_until(name);
goto eatbrac;
case '<'|QUOTE: {
static struct Strbuf wbuf; /* = Strbuf_INIT; */
if (bitset)
stderror(ERR_NOTALLOWED, "$?<");
if (dimen)
stderror(ERR_NOTALLOWED, "$#<");
if (length)
stderror(ERR_NOTALLOWED, "$%<");
wbuf.len = 0;
{
char cbuf[MB_LEN_MAX];
size_t cbp = 0;
int old_pintr_disabled;
for (;;) {
int len;
ssize_t res;
Char wc;
pintr_push_enable(&old_pintr_disabled);
res = force_read(OLDSTD, cbuf + cbp, 1);
cleanup_until(&old_pintr_disabled);
if (res != 1)
break;
cbp++;
len = normal_mbtowc(&wc, cbuf, cbp);
if (len == -1) {
reset_mbtowc();
if (cbp < MB_LEN_MAX)
continue; /* Maybe a partial character */
wc = (unsigned char)*cbuf | INVALID_BYTE;
}
if (len <= 0)
len = 1;
if (cbp != (size_t)len)
memmove(cbuf, cbuf + len, cbp - len);
cbp -= len;
if (wc == '\n')
break;
Strbuf_append1(&wbuf, wc);
}
while (cbp != 0) {
int len;
Char wc;
len = normal_mbtowc(&wc, cbuf, cbp);
if (len == -1) {
reset_mbtowc();
wc = (unsigned char)*cbuf | INVALID_BYTE;
}
if (len <= 0)
len = 1;
if (cbp != (size_t)len)
memmove(cbuf, cbuf + len, cbp - len);
cbp -= len;
if (wc == '\n')
break;
Strbuf_append1(&wbuf, wc);
}
Strbuf_terminate(&wbuf);
}
fixDolMod();
setDolp(wbuf.s); /* Kept allocated until next $< expansion */
cleanup_until(name);
goto eatbrac;
}
case '*':
Strbuf_append(name, STRargv);
Strbuf_terminate(name);
vp = adrof(STRargv);
subscr = -1; /* Prevent eating [...] */
break;
case DEOF:
case '\n':
np = dimen ? STRargv : (bitset ? STRstatus : NULL);
if (np) {
bitset = 0;
Strbuf_append(name, np);
Strbuf_terminate(name);
vp = adrof(np);
subscr = -1; /* Prevent eating [...] */
unDredc(c);
break;
}
else
stderror(ERR_SYNTAX);
/*NOTREACHED*/
default:
if (Isdigit(c)) {
if (dimen)
stderror(ERR_NOTALLOWED, "$#<num>");
subscr = 0;
do {
subscr = subscr * 10 + c - '0';
c = DgetC(0);
} while (c != DEOF && Isdigit(c));
unDredc(c);
if (subscr < 0)
stderror(ERR_RANGE);
if (subscr == 0) {
if (bitset) {
dolp = dolzero ? STR1 : STR0;
cleanup_until(name);
goto eatbrac;
}
if (ffile == 0)
stderror(ERR_DOLZERO);
if (length) {
length = Strlen(ffile);
addla(putn((tcsh_number_t)length));
}
else {
fixDolMod();
setDolp(ffile);
}
cleanup_until(name);
goto eatbrac;
}
#if 0
if (bitset)
stderror(ERR_NOTALLOWED, "$?<num>");
if (length)
stderror(ERR_NOTALLOWED, "$%<num>");
#endif
vp = adrof(STRargv);
if (vp == 0) {
vp = &nulargv;
cleanup_until(name);
goto eatmod;
}
break;
}
if (c == DEOF || !alnum(c)) {
np = dimen ? STRargv : (bitset ? STRstatus : NULL);
if (np) {
bitset = 0;
Strbuf_append(name, np);
Strbuf_terminate(name);
vp = adrof(np);
subscr = -1; /* Prevent eating [...] */
unDredc(c);
break;
}
else
stderror(ERR_VARALNUM);
}
for (;;) {
Strbuf_append1(name, (Char) c);
c = DgetC(0);
if (c == DEOF || !alnum(c))
break;
}
Strbuf_terminate(name);
unDredc(c);
vp = adrof(name->s);
}
if (bitset) {
dolp = (vp || getenv(short2str(name->s))) ? STR1 : STR0;
cleanup_until(name);
goto eatbrac;
}
if (vp == NULL || vp->vec == NULL) {
np = str2short(getenv(short2str(name->s)));
if (np) {
static Char *env_val; /* = NULL; */
cleanup_until(name);
fixDolMod();
if (length) {
addla(putn((tcsh_number_t)Strlen(np)));
} else {
xfree(env_val);
env_val = Strsave(np);
setDolp(env_val);
}
goto eatbrac;
}
udvar(name->s);
/* NOTREACHED */
}
cleanup_until(name);
c = DgetC(0);
upb = blklen(vp->vec);
if (dimen == 0 && subscr == 0 && c == '[') {
name = Strbuf_alloc();
cleanup_push(name, Strbuf_free);
np = name->s;
for (;;) {
c = DgetC(DODOL); /* Allow $ expand within [ ] */
if (c == ']')
break;
if (c == '\n' || c == DEOF)
stderror(ERR_INCBR);
Strbuf_append1(name, (Char) c);
}
Strbuf_terminate(name);
np = name->s;
if (dolp || dolcnt) /* $ exp must end before ] */
stderror(ERR_EXPORD);
if (!*np)
stderror(ERR_SYNTAX);
if (Isdigit(*np)) {
int i;
for (i = 0; Isdigit(*np); i = i * 10 + *np++ - '0')
continue;
if (i < 0 || (i > upb && !any("-*", *np))) {
cleanup_until(name);
dolerror(vp->v_name);
return;
}
lwb = i;
if (!*np)
upb = lwb, np = STRstar;
}
if (*np == '*')
np++;
else if (*np != '-')
stderror(ERR_MISSING, '-');
else {
int i = upb;
np++;
if (Isdigit(*np)) {
i = 0;
while (Isdigit(*np))
i = i * 10 + *np++ - '0';
if (i < 0 || i > upb) {
cleanup_until(name);
dolerror(vp->v_name);
return;
}
}
if (i < lwb)
upb = lwb - 1;
else
upb = i;
}
if (lwb == 0) {
if (upb != 0) {
cleanup_until(name);
dolerror(vp->v_name);
return;
}
upb = -1;
}
if (*np)
stderror(ERR_SYNTAX);
cleanup_until(name);
}
else {
if (subscr > 0) {
if (subscr > upb)
lwb = 1, upb = 0;
else
lwb = upb = subscr;
}
unDredc(c);
}
if (dimen) {
/* this is a kludge. It prevents Dgetdol() from */
/* pushing erroneous ${#<error> values into the labuf. */
if (sc == '{') {
c = Dredc();
if (c != '}')
stderror(ERR_MISSING, '}');
unDredc(c);
}
addla(putn((tcsh_number_t)(upb - lwb + 1)));
}
else if (length) {
int i;
for (i = lwb - 1, length = 0; i < upb; i++)
length += Strlen(vp->vec[i]);
#ifdef notdef
/* We don't want that, since we can always compute it by adding $#xxx */
length += i - 1; /* Add the number of spaces in */
#endif
addla(putn((tcsh_number_t)length));
}
else {
eatmod:
fixDolMod();
dolnxt = &vp->vec[lwb - 1];
dolcnt = upb - lwb + 1;
}
eatbrac:
if (sc == '{') {
c = Dredc();
if (c != '}')
stderror(ERR_MISSING, '}');
}
}
/*
* Form a shell temporary file (in unit 0) from the words
* of the shell input up to EOF or a line the same as "term".
* Unit 0 should have been closed before this call.
*/
void
heredoc(Char *term)
{
eChar c;
Char *Dv[2];
struct Strbuf lbuf = Strbuf_INIT, mbuf = Strbuf_INIT;
Char obuf[BUFSIZE + 1];
#define OBUF_END (obuf + sizeof(obuf) / sizeof (*obuf) - 1)
Char *lbp, *obp, *mbp;
Char **vp;
int quoted;
#ifdef HAVE_MKSTEMP
char *tmp = short2str(shtemp);
char *dot = strrchr(tmp, '.');
if (!dot)
stderror(ERR_NAME | ERR_NOMATCH);
strcpy(dot, TMP_TEMPLATE);
xclose(0);
if (mkstemp(tmp) == -1)
stderror(ERR_SYSTEM, tmp, strerror(errno));
#else /* !HAVE_MKSTEMP */
char *tmp;
# ifndef WINNT_NATIVE
again:
# endif /* WINNT_NATIVE */
tmp = short2str(shtemp);
# if O_CREAT == 0
if (xcreat(tmp, 0600) < 0)
stderror(ERR_SYSTEM, tmp, strerror(errno));
# endif
xclose(0);
if (xopen(tmp, O_RDWR|O_CREAT|O_EXCL|O_TEMPORARY|O_LARGEFILE, 0600) ==
-1) {
int oerrno = errno;
# ifndef WINNT_NATIVE
if (errno == EEXIST) {
if (unlink(tmp) == -1) {
xfree(shtemp);
mbp = randsuf();
shtemp = Strspl(STRtmpsh, mbp);
xfree(mbp);
}
goto again;
}
# endif /* WINNT_NATIVE */
(void) unlink(tmp);
errno = oerrno;
stderror(ERR_SYSTEM, tmp, strerror(errno));
}
#endif /* HAVE_MKSTEMP */
(void) unlink(tmp); /* 0 0 inode! */
Dv[0] = term;
Dv[1] = NULL;
gflag = 0;
trim(Dv);
rscan(Dv, Dtestq);
quoted = gflag;
obp = obuf;
obuf[BUFSIZE] = 0;
inheredoc = 1;
cleanup_push(&inheredoc, inheredoc_cleanup);
#ifdef WINNT_NATIVE
__dup_stdin = 1;
#endif /* WINNT_NATIVE */
cleanup_push(&lbuf, Strbuf_cleanup);
cleanup_push(&mbuf, Strbuf_cleanup);
for (;;) {
Char **words;
/*
* Read up a line
*/
lbuf.len = 0;
for (;;) {
c = readc(1); /* 1 -> Want EOF returns */
if (c == CHAR_ERR || c == '\n')
break;
if ((c &= TRIM) != 0)
Strbuf_append1(&lbuf, (Char) c);
}
Strbuf_terminate(&lbuf);
/* Catch EOF in the middle of a line. */
if (c == CHAR_ERR && lbuf.len != 0)
c = '\n';
/*
* Check for EOF or compare to terminator -- before expansion
*/
if (c == CHAR_ERR || eq(lbuf.s, term))
break;
/*
* If term was quoted or -n just pass it on
*/
if (quoted || noexec) {
Strbuf_append1(&lbuf, '\n');
Strbuf_terminate(&lbuf);
for (lbp = lbuf.s; (c = *lbp++) != 0;) {
*obp++ = (Char) c;
if (obp == OBUF_END) {
tmp = short2str(obuf);
(void) xwrite(0, tmp, strlen (tmp));
obp = obuf;
}
}
continue;
}
/*
* Term wasn't quoted so variable and then command expand the input
* line
*/
Dcp = lbuf.s;
Dvp = Dv + 1;
mbuf.len = 0;
for (;;) {
c = DgetC(DODOL);
if (c == DEOF)
break;
if ((c &= TRIM) == 0)
continue;
/* \ quotes \ $ ` here */
if (c == '\\') {
c = DgetC(0);
if (!any("$\\`", c))
unDgetC(c | QUOTE), c = '\\';
else
c |= QUOTE;
}
Strbuf_append1(&mbuf, (Char) c);
}
Strbuf_terminate(&mbuf);
/*
* If any ` in line do command substitution
*/
mbp = mbuf.s;
if (Strchr(mbp, '`') != NULL) {
/*
* 1 arg to dobackp causes substitution to be literal. Words are
* broken only at newlines so that all blanks and tabs are
* preserved. Blank lines (null words) are not discarded.
*/
words = dobackp(mbp, 1);
}
else
/* Setup trivial vector similar to return of dobackp */
Dv[0] = mbp, Dv[1] = NULL, words = Dv;
/*
* Resurrect the words from the command substitution each separated by
* a newline. Note that the last newline of a command substitution
* will have been discarded, but we put a newline after the last word
* because this represents the newline after the last input line!
*/
for (vp= words; *vp; vp++) {
for (mbp = *vp; *mbp; mbp++) {
*obp++ = *mbp & TRIM;
if (obp == OBUF_END) {
tmp = short2str(obuf);
(void) xwrite(0, tmp, strlen (tmp));
obp = obuf;
}
}
*obp++ = '\n';
if (obp == OBUF_END) {
tmp = short2str(obuf);
(void) xwrite(0, tmp, strlen (tmp));
obp = obuf;
}
}
if (words != Dv)
blkfree(words);
}
*obp = 0;
tmp = short2str(obuf);
(void) xwrite(0, tmp, strlen (tmp));
(void) lseek(0, (off_t) 0, L_SET);
cleanup_until(&inheredoc);
}
static void
backeval(struct blk_buf *bb, struct Strbuf *word, Char *cp, int literal)
{
ssize_t icnt;
Char c, *ip;
struct command faket;
int hadnl;
int pvec[2], quoted;
Char *fakecom[2], ibuf[BUFSIZE];
char tibuf[BUFSIZE];
hadnl = 0;
icnt = 0;
quoted = (literal || (cp[0] & QUOTE)) ? QUOTE : 0;
faket.t_dtyp = NODE_COMMAND;
faket.t_dflg = F_BACKQ;
faket.t_dlef = 0;
faket.t_drit = 0;
faket.t_dspr = 0;
faket.t_dcom = fakecom;
fakecom[0] = STRfakecom1;
fakecom[1] = 0;
/*
* We do the psave job to temporarily change the current job so that the
* following fork is considered a separate job. This is so that when
* backquotes are used in a builtin function that calls glob the "current
* job" is not corrupted. We only need one level of pushed jobs as long as
* we are sure to fork here.
*/
psavejob();
cleanup_push(&faket, psavejob_cleanup); /* faket is only a marker */
/*
* It would be nicer if we could integrate this redirection more with the
* routines in sh.sem.c by doing a fake execute on a builtin function that
* was piped out.
*/
mypipe(pvec);
cleanup_push(&pvec[0], open_cleanup);
cleanup_push(&pvec[1], open_cleanup);
if (pfork(&faket, -1) == 0) {
jmp_buf_t osetexit;
struct command *t;
size_t omark;
xclose(pvec[0]);
(void) dmove(pvec[1], 1);
(void) dmove(SHDIAG, 2);
initdesc();
closem();
arginp = cp;
for (arginp = cp; *cp; cp++) {
*cp &= TRIM;
if (is_set(STRcsubstnonl) && (*cp == '\n' || *cp == '\r'))
*cp = ' ';
}
/*
* In the child ``forget'' everything about current aliases or
* eval vectors.
*/
alvec = NULL;
evalvec = NULL;
alvecp = NULL;
evalp = NULL;
omark = cleanup_push_mark();
getexit(osetexit);
for (;;) {
(void) setexit();
justpr = 0;
if (haderr) {
/* unwind */
doneinp = 0;
cleanup_pop_mark(omark);
resexit(osetexit);
reset();
}
if (seterr) {
xfree(seterr);
seterr = NULL;
}
(void) lex(¶ml);
cleanup_push(¶ml, lex_cleanup);
if (seterr)
stderror(ERR_OLD);
alias(¶ml);
t = syntax(paraml.next, ¶ml, 0);
if (t == NULL)
return;
cleanup_push(t, syntax_cleanup);
/* The F_BACKQ flag must set so the job output is correct if
* printexitvalue is set. If it's not set, the job output
* will have "Exit N" appended where N is the exit status. */
t->t_dflg = F_BACKQ|F_NOFORK;
if (seterr)
stderror(ERR_OLD);
#ifdef SIGTSTP
signal(SIGTSTP, SIG_IGN);
#endif
#ifdef SIGTTIN
signal(SIGTTIN, SIG_IGN);
#endif
#ifdef SIGTTOU
signal(SIGTTOU, SIG_IGN);
#endif
execute(t, -1, NULL, NULL, TRUE);
cleanup_until(¶ml);
}
}
cleanup_until(&pvec[1]);
c = 0;
ip = NULL;
do {
ssize_t cnt = 0;
char *tmp;
tmp = tibuf;
for (;;) {
while (icnt == 0) {
int i, eof;
ip = ibuf;
icnt = xread(pvec[0], tmp, tibuf + BUFSIZE - tmp);
eof = 0;
if (icnt <= 0) {
if (tmp == tibuf)
goto eof;
icnt = 0;
eof = 1;
}
icnt += tmp - tibuf;
i = 0;
tmp = tibuf;
while (tmp < tibuf + icnt) {
int len;
len = normal_mbtowc(&ip[i], tmp, tibuf + icnt - tmp);
if (len == -1) {
reset_mbtowc();
if (!eof && (size_t)(tibuf + icnt - tmp) < MB_CUR_MAX) {
break; /* Maybe a partial character */
}
ip[i] = (unsigned char) *tmp | INVALID_BYTE; /* Error */
}
if (len <= 0)
len = 1;
i++;
tmp += len;
}
if (tmp != tibuf)
memmove (tibuf, tmp, tibuf + icnt - tmp);
tmp = tibuf + (tibuf + icnt - tmp);
icnt = i;
}
if (hadnl)
break;
--icnt;
c = (*ip++ & TRIM);
if (c == 0)
break;
#if defined(WINNT_NATIVE) || defined(__CYGWIN__)
if (c == '\r')
c = ' ';
#endif /* WINNT_NATIVE || __CYGWIN__ */
if (c == '\n') {
/*
* Continue around the loop one more time, so that we can eat
* the last newline without terminating this word.
*/
hadnl = 1;
continue;
}
if (!quoted && (c == ' ' || c == '\t'))
break;
cnt++;
Strbuf_append1(word, c | quoted);
}
/*
* Unless at end-of-file, we will form a new word here if there were
* characters in the word, or in any case when we take text literally.
* If we didn't make empty words here when literal was set then we
* would lose blank lines.
*/
if (c != 0 && (cnt || literal))
pword(bb, word);
hadnl = 0;
} while (c > 0);
eof:
cleanup_until(&pvec[0]);
pwait();
cleanup_until(&faket); /* psavejob_cleanup(); */
}
static void
unparsech(struct Strbuf *buf, Char ch)
{
if (ch == 0) {
Strbuf_append1(buf, '^');
Strbuf_append1(buf, '@');
}
else if (Iscntrl(ch)) {
Strbuf_append1(buf, '^');
if (ch == CTL_ESC('\177'))
Strbuf_append1(buf, '?');
else
#ifdef IS_ASCII
Strbuf_append1(buf, ch | 0100);
#else
Strbuf_append1(buf, _toebcdic[_toascii[ch]|0100]);
#endif
}
else if (ch == '^') {
Strbuf_append1(buf, '\\');
Strbuf_append1(buf, '^');
} else if (ch == '\\') {
Strbuf_append1(buf, '\\');
Strbuf_append1(buf, '\\');
} else if (ch == ' ' || (Isprint(ch) && !Isspace(ch))) {
Strbuf_append1(buf, ch);
}
else {
Strbuf_append1(buf, '\\');
Strbuf_append1(buf, ((ch >> 6) & 7) + '0');
Strbuf_append1(buf, ((ch >> 3) & 7) + '0');
Strbuf_append1(buf, (ch & 7) + '0');
}
}
/*
* dfollow - change to arg directory; fall back on cdpath if not valid
*/
static Char *
dfollow(Char *cp, int old)
{
Char *dp;
struct varent *c;
int serrno;
cp = old ? Strsave(cp) : globone(cp, G_ERROR);
cleanup_push(cp, xfree);
#ifdef apollo
if (Strchr(cp, '`')) {
char *dptr;
if (chdir(dptr = short2str(cp)) < 0)
stderror(ERR_SYSTEM, dptr, strerror(errno));
dp = agetcwd();
cleanup_push(dp, xfree);
if (dp != NULL) {
cleanup_until(cp);
return dgoto(dp);
}
else
stderror(ERR_SYSTEM, dptr, strerror(errno));
}
#endif /* apollo */
/*
* if we are ignoring symlinks, try to fix relatives now.
* if we are expading symlinks, it should be done by now.
*/
dp = dnormalize(cp, symlinks == SYM_IGNORE);
if (chdir(short2str(dp)) >= 0) {
cleanup_until(cp);
return dgoto(dp);
}
else {
xfree(dp);
if (chdir(short2str(cp)) >= 0) {
cleanup_ignore(cp);
cleanup_until(cp);
return dgoto(cp);
}
else if (errno != ENOENT && errno != ENOTDIR) {
int err;
err = errno;
stderror(ERR_SYSTEM, short2str(cp), strerror(err));
}
serrno = errno;
}
if (cp[0] != '/' && !prefix(STRdotsl, cp) && !prefix(STRdotdotsl, cp)
&& (c = adrof(STRcdpath)) && c->vec != NULL) {
struct Strbuf buf = Strbuf_INIT;
Char **cdp;
for (cdp = c->vec; *cdp; cdp++) {
size_t len = Strlen(*cdp);
buf.len = 0;
if (len > 0) {
Strbuf_append(&buf, *cdp);
if ((*cdp)[len - 1] != '/')
Strbuf_append1(&buf, '/');
}
Strbuf_append(&buf, cp);
Strbuf_terminate(&buf);
/*
* We always want to fix the directory here
* If we are normalizing symlinks
*/
dp = dnormalize(buf.s, symlinks == SYM_IGNORE ||
symlinks == SYM_EXPAND);
if (chdir(short2str(dp)) >= 0) {
printd = 1;
xfree(buf.s);
cleanup_until(cp);
return dgoto(dp);
}
else if (chdir(short2str(cp)) >= 0) {
printd = 1;
xfree(dp);
xfree(buf.s);
cleanup_ignore(cp);
cleanup_until(cp);
return dgoto(cp);
}
}
xfree(buf.s);
}
dp = varval(cp);
if ((dp[0] == '/' || dp[0] == '.') && chdir(short2str(dp)) >= 0) {
cleanup_until(cp);
cp = Strsave(dp);
printd = 1;
return dgoto(cp);
}
/*
* on login source of ~/.cshdirs, errors are eaten. the dir stack is all
* directories we could get to.
*/
if (!bequiet)
stderror(ERR_SYSTEM, short2str(cp), strerror(serrno));
cleanup_until(cp);
return (NULL);
}
