2 * Copyright (c) 1989 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #if defined(LIBC_SCCS) && !defined(lint)
33 static char sccsid[] = "@(#)glob.c 5.12 (Berkeley) 6/24/91";
34 #endif /* LIBC_SCCS and not lint */
36 * Glob: the interface is a superset of the one defined in POSIX 1003.2,
39 * The [!...] convention to negate a range is supported (SysV, Posix, ksh).
41 * Optional extra services, controlled by flags not defined by POSIX:
44 * Escaping convention: \ inhibits any special meaning the following
45 * character might have (except \ at end of string is retained).
47 * Set in gl_flags if pattern contained a globbing character.
49 * Use ^ instead of ! for "not".
51 * Number of matches in the current invocation of glob.
55 #pragma warning(disable:4244)
56 #endif /* WINNT_NATIVE */
70 #define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
73 #if !defined(S_ISLNK) && defined(S_IFLNK)
74 #define S_ISLNK(a) (((a) & S_IFMT) == S_IFLNK)
77 #if !defined(S_ISLNK) && !defined(lstat)
81 typedef unsigned short Char;
83 static int glob1 (Char *, glob_t *, int);
84 static int glob2 (struct strbuf *, const Char *, glob_t *, int);
85 static int glob3 (struct strbuf *, const Char *, const Char *,
86 const Char *, glob_t *, int);
87 static void globextend (const char *, glob_t *);
88 static int match (const char *, const Char *, const Char *,
90 static int compare (const void *, const void *);
91 static DIR *Opendir (const char *);
93 static int Lstat (const char *, struct stat *);
95 static int Stat (const char *, struct stat *sb);
96 static Char *Strchr (Char *, int);
98 static void qprintf (const Char *);
114 #define UNDERSCORE '_'
116 #define M_META 0x8000
117 #define M_PROTECT 0x4000
118 #define M_MASK 0xffff
119 #define M_ASCII 0x00ff
121 #define LCHAR(c) ((c)&M_ASCII)
122 #define META(c) ((c)|M_META)
123 #define M_ALL META('*')
124 #define M_END META(']')
125 #define M_NOT META('!')
126 #define M_ALTNOT META('^')
127 #define M_ONE META('?')
128 #define M_RNG META('-')
129 #define M_SET META('[')
130 #define ismeta(c) (((c)&M_META) != 0)
133 globcharcoll(__Char c1, __Char c2, int cs)
135 #if defined(NLS) && defined(LC_COLLATE) && defined(HAVE_STRCOLL)
136 # if defined(WIDE_STRINGS)
137 wchar_t s1[2], s2[2];
145 /* This should not be here, but I'll rather leave it in than engage in
146 a LC_COLLATE flamewar about a shell I don't use... */
147 if (iswlower(c1) && iswupper(c2))
149 if (iswupper(c1) && iswlower(c2))
154 s1[1] = s2[1] = '\0';
155 return wcscoll(s1, s2);
156 # else /* not WIDE_STRINGS */
162 * From kevin lyda <kevin@suberic.net>:
163 * strcoll does not guarantee case sorting, so we pre-process now:
166 c1 = islower(c1) ? c1 : tolower(c1);
167 c2 = islower(c2) ? c2 : tolower(c2);
169 if (islower(c1) && isupper(c2))
171 if (isupper(c1) && islower(c2))
176 s1[1] = s2[1] = '\0';
177 return strcoll(s1, s2);
185 * Need to dodge two kernel bugs:
186 * opendir("") != opendir(".")
187 * NAMEI_BUG: on plain files trailing slashes are ignored in some kernels.
188 * POSIX specifies that they should be ignored in directories.
192 Opendir(const char *str)
194 #if defined(hpux) || defined(__hpux)
199 return (opendir("."));
200 #if defined(hpux) || defined(__hpux)
202 * Opendir on some device files hangs, so avoid it
204 if (stat(str, &st) == -1 || !S_ISDIR(st.st_mode))
212 Lstat(const char *fn, struct stat *sb)
218 if (*fn != 0 && strend(fn)[-1] == '/' && !S_ISDIR(sb->st_mode))
220 # endif /* NAMEI_BUG */
228 Stat(const char *fn, struct stat *sb)
234 if (*fn != 0 && strend(fn)[-1] == '/' && !S_ISDIR(sb->st_mode))
236 #endif /* NAMEI_BUG */
241 Strchr(Char *str, int ch)
252 qprintf(const Char *s)
257 printf("%c", *p & 0xff);
260 printf("%c", *p & M_PROTECT ? '"' : ' ');
263 printf("%c", *p & M_META ? '_' : ' ');
269 compare(const void *p, const void *q)
271 #if defined(NLS) && defined(HAVE_STRCOLL)
272 return (strcoll(*(char *const *) p, *(char *const *) q));
274 return (strcmp(*(char *const *) p, *(char *const *) q));
275 #endif /* NLS && HAVE_STRCOLL */
279 * The main glob() routine: compiles the pattern (optionally processing
280 * quotes), calls glob1() to do the real pattern matching, and finally
281 * sorts the list (unless unsorted operation is requested). Returns 0
282 * if things went well, nonzero if errors occurred. It is not an error
283 * to find no matches.
286 glob(const char *pattern, int flags, int (*errfunc) (const char *, int),
290 Char *bufnext, m_not;
291 const unsigned char *patnext;
293 Char *qpatnext, *patbuf;
296 patnext = (const unsigned char *) pattern;
297 if (!(flags & GLOB_APPEND)) {
299 pglob->gl_pathv = NULL;
300 if (!(flags & GLOB_DOOFFS))
303 pglob->gl_flags = flags & ~GLOB_MAGCHAR;
304 pglob->gl_errfunc = errfunc;
305 oldpathc = pglob->gl_pathc;
306 pglob->gl_matchc = 0;
308 if (pglob->gl_flags & GLOB_ALTNOT) {
317 patbuf = xmalloc((strlen(pattern) + 1) * sizeof(*patbuf));
320 no_match = *patnext == not;
324 if (flags & GLOB_QUOTE) {
325 /* Protect the quoted characters */
326 while ((c = *patnext++) != EOS) {
330 len = mblen((const char *)(patnext - 1), MB_LEN_MAX);
332 TCSH_IGNORE(mblen(NULL, 0));
334 *bufnext++ = (Char) c;
336 *bufnext++ = (Char) (*patnext++ | M_PROTECT);
338 #endif /* WIDE_STRINGS */
340 if ((c = *patnext++) == EOS) {
344 *bufnext++ = (Char) (c | M_PROTECT);
347 *bufnext++ = (Char) c;
351 while ((c = *patnext++) != EOS)
352 *bufnext++ = (Char) c;
357 while ((c = *qpatnext++) != EOS) {
363 if (*qpatnext == EOS ||
364 Strchr(qpatnext + 1, RBRACKET) == NULL) {
365 *bufnext++ = LBRACKET;
370 pglob->gl_flags |= GLOB_MAGCHAR;
376 *bufnext++ = LCHAR(c);
377 if (*qpatnext == RANGE &&
378 (c = qpatnext[1]) != RBRACKET) {
380 *bufnext++ = LCHAR(c);
383 } while ((c = *qpatnext++) != RBRACKET);
387 pglob->gl_flags |= GLOB_MAGCHAR;
391 pglob->gl_flags |= GLOB_MAGCHAR;
392 /* collapse adjacent stars to one [or three if globstar],
393 * to avoid exponential behavior
395 if (bufnext == patbuf || bufnext[-1] != M_ALL ||
396 ((flags & GLOB_STAR) != 0 &&
397 (bufnext - 1 == patbuf || bufnext[-2] != M_ALL ||
398 bufnext - 2 == patbuf || bufnext[-3] != M_ALL)))
402 *bufnext++ = LCHAR(c);
411 if ((err = glob1(patbuf, pglob, no_match)) != 0) {
417 * If there was no match we are going to append the pattern
418 * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
419 * and the pattern did not contain any magic characters
420 * GLOB_NOMAGIC is there just for compatibility with csh.
422 if (pglob->gl_pathc == oldpathc &&
423 ((flags & GLOB_NOCHECK) ||
424 ((flags & GLOB_NOMAGIC) && !(pglob->gl_flags & GLOB_MAGCHAR)))) {
425 if (!(flags & GLOB_QUOTE))
426 globextend(pattern, pglob);
431 /* copy pattern, interpreting quotes */
432 copy = xmalloc(strlen(pattern) + 1);
435 while (*src != EOS) {
443 globextend(copy, pglob);
449 else if (!(flags & GLOB_NOSORT) && (pglob->gl_pathc != oldpathc))
450 qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
451 pglob->gl_pathc - oldpathc, sizeof(char *), compare);
457 glob1(Char *pattern, glob_t *pglob, int no_match)
459 struct strbuf pathbuf = strbuf_INIT;
463 * a null pathname is invalid -- POSIX 1003.1 sect. 2.4.
467 err = glob2(&pathbuf, pattern, pglob, no_match);
473 * functions glob2 and glob3 are mutually recursive; there is one level
474 * of recursion for each segment in the pattern that contains one or
475 * more meta characters.
478 glob2(struct strbuf *pathbuf, const Char *pattern, glob_t *pglob, int no_match)
486 * loop over pattern segments until end of pattern or until segment with
487 * meta character found.
491 if (*pattern == EOS) { /* end of pattern? */
492 strbuf_terminate(pathbuf);
494 if (Lstat(pathbuf->s, &sbuf))
497 if (((pglob->gl_flags & GLOB_MARK) &&
498 pathbuf->s[pathbuf->len - 1] != SEP) &&
499 (S_ISDIR(sbuf.st_mode)
501 || (S_ISLNK(sbuf.st_mode) &&
502 (Stat(pathbuf->s, &sbuf) == 0) &&
503 S_ISDIR(sbuf.st_mode))
506 strbuf_append1(pathbuf, SEP);
507 strbuf_terminate(pathbuf);
510 globextend(pathbuf->s, pglob);
514 /* find end of next segment, tentatively copy to pathbuf */
516 orig_len = pathbuf->len;
517 while (*p != EOS && *p != SEP) {
520 strbuf_append1(pathbuf, *p++);
523 if (!anymeta) { /* no expansion, do next segment */
525 while (*pattern == SEP)
526 strbuf_append1(pathbuf, *pattern++);
528 else { /* need expansion, recurse */
529 pathbuf->len = orig_len;
530 return (glob3(pathbuf, pattern, p, pattern, pglob, no_match));
537 One_Char_mbtowc(__Char *pwc, const Char *s, size_t n)
540 char buf[MB_LEN_MAX], *p;
545 while (p < buf + n && (*p++ = LCHAR(*s++)) != 0)
547 return one_mbtowc(pwc, buf, n);
555 glob3(struct strbuf *pathbuf, const Char *pattern, const Char *restpattern,
556 const Char *pglobstar, glob_t *pglob, int no_match)
562 Char m_not = (pglob->gl_flags & GLOB_ALTNOT) ? M_ALTNOT : M_NOT;
565 int chase_symlinks = 0;
566 const Char *termstar = NULL;
568 strbuf_terminate(pathbuf);
569 orig_len = pathbuf->len;
572 while (pglobstar < restpattern) {
574 size_t width = One_Char_mbtowc(&wc, pglobstar, MB_LEN_MAX);
575 if ((pglobstar[0] & M_MASK) == M_ALL &&
576 (pglobstar[width] & M_MASK) == M_ALL) {
578 chase_symlinks = (pglobstar[2 * width] & M_MASK) == M_ALL;
579 termstar = pglobstar + (2 + chase_symlinks) * width;
586 err = pglobstar==pattern && termstar==restpattern ?
587 *restpattern == EOS ?
588 glob2(pathbuf, restpattern - 1, pglob, no_match) :
589 glob2(pathbuf, restpattern + 1, pglob, no_match) :
590 glob3(pathbuf, pattern, restpattern, termstar, pglob, no_match);
593 pathbuf->len = orig_len;
594 strbuf_terminate(pathbuf);
597 if (*pathbuf->s && (Lstat(pathbuf->s, &sbuf) || !S_ISDIR(sbuf.st_mode)
599 && ((globstar && !chase_symlinks) || !S_ISLNK(sbuf.st_mode))
604 if (!(dirp = Opendir(pathbuf->s))) {
605 /* todo: don't call for ENOENT or ENOTDIR? */
606 if ((pglob->gl_errfunc && (*pglob->gl_errfunc) (pathbuf->s, errno)) ||
607 (pglob->gl_flags & GLOB_ERR))
613 /* search directory for matching names */
614 while ((dp = readdir(dirp)) != NULL) {
615 /* initial DOT must be matched literally */
616 if (dp->d_name[0] == DOT && *pattern != DOT)
617 if (!(pglob->gl_flags & GLOB_DOT) || !dp->d_name[1] ||
618 (dp->d_name[1] == DOT && !dp->d_name[2]))
619 continue; /*unless globdot and not . or .. */
620 pathbuf->len = orig_len;
621 strbuf_append(pathbuf, dp->d_name);
622 strbuf_terminate(pathbuf);
626 if (!chase_symlinks &&
627 (Lstat(pathbuf->s, &sbuf) || S_ISLNK(sbuf.st_mode)))
630 if (match(pathbuf->s + orig_len, pattern, termstar,
631 (int)m_not) == no_match)
633 strbuf_append1(pathbuf, SEP);
634 strbuf_terminate(pathbuf);
635 if ((err = glob2(pathbuf, pglobstar, pglob, no_match)) != 0)
638 if (match(pathbuf->s + orig_len, pattern, restpattern,
639 (int) m_not) == no_match)
641 if ((err = glob2(pathbuf, restpattern, pglob, no_match)) != 0)
645 /* todo: check error from readdir? */
652 * Extend the gl_pathv member of a glob_t structure to accomodate a new item,
653 * add the new item, and update gl_pathc.
655 * This assumes the BSD realloc, which only copies the block when its size
656 * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
659 * Return 0 if new item added, error code if memory couldn't be allocated.
661 * Invariant of the glob_t structure:
662 * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
663 * gl_pathv points to (gl_offs + gl_pathc + 1) items.
666 globextend(const char *path, glob_t *pglob)
672 newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
673 pathv = xrealloc(pglob->gl_pathv, newsize);
675 if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
676 /* first time around -- clear initial gl_offs items */
677 pathv += pglob->gl_offs;
678 for (i = pglob->gl_offs; --i >= 0;)
681 pglob->gl_pathv = pathv;
683 pathv[pglob->gl_offs + pglob->gl_pathc++] = strsave(path);
684 pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
688 * pattern matching function for filenames. Each occurrence of the *
689 * pattern causes a recursion level.
692 match(const char *name, const Char *pat, const Char *patend, int m_not)
694 int ok, negate_range;
697 while (pat < patend) {
701 c = *pat; /* Only for M_MASK bits */
702 pat += One_Char_mbtowc(&wc, pat, MB_LEN_MAX);
703 lwk = one_mbtowc(&wk, name, MB_LEN_MAX);
704 switch (c & M_MASK) {
706 while (pat < patend && (*pat & M_MASK) == M_ALL) /* eat consecutive '*' */
707 pat += One_Char_mbtowc(&wc, pat, MB_LEN_MAX);
710 while (!match(name, pat, patend, m_not)) {
714 lwk = one_mbtowc(&wk, name, MB_LEN_MAX);
727 if ((negate_range = ((*pat & M_MASK) == m_not)) != 0)
729 while ((*pat & M_MASK) != M_END) {
730 pat += One_Char_mbtowc(&wc, pat, MB_LEN_MAX);
731 if ((*pat & M_MASK) == M_RNG) {
735 pat += One_Char_mbtowc(&wc2, pat, MB_LEN_MAX);
736 if (globcharcoll(wc, wk, 0) <= 0 &&
737 globcharcoll(wk, wc2, 0) <= 0)
742 pat += One_Char_mbtowc(&wc, pat, MB_LEN_MAX);
743 if (ok == negate_range)
747 if (*name == EOS || samecase(wk) != samecase(wc))
753 return (*name == EOS);
756 /* free allocated data belonging to a glob_t structure */
758 globfree(glob_t *pglob)
763 if (pglob->gl_pathv != NULL) {
764 pp = pglob->gl_pathv + pglob->gl_offs;
765 for (i = pglob->gl_pathc; i--; ++pp)
767 xfree(*pp), *pp = NULL;
768 xfree(pglob->gl_pathv), pglob->gl_pathv = NULL;