[libgit2.git] / src / util / wildmatch.c

/*
 * Copyright (C) the libgit2 contributors. All rights reserved.
 *
 * This file is part of libgit2, distributed under the GNU GPL v2 with
 * a Linking Exception. For full terms see the included COPYING file.
 *
 * Do shell-style pattern matching for ?, \, [], and * characters.
 * It is 8bit clean.
 *
 * Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986.
 * Rich $alz is now <rsalz@bbn.com>.
 *
 * Modified by Wayne Davison to special-case '/' matching, to make '**'
 * work differently than '*', and to fix the character-class code.
 *
 * Imported from git.git.
 */

#include "wildmatch.h"

#define GIT_SPACE 0x01
#define GIT_DIGIT 0x02
#define GIT_ALPHA 0x04
#define GIT_GLOB_SPECIAL 0x08
#define GIT_REGEX_SPECIAL 0x10
#define GIT_PATHSPEC_MAGIC 0x20
#define GIT_CNTRL 0x40
#define GIT_PUNCT 0x80

enum {
	S = GIT_SPACE,
	A = GIT_ALPHA,
	D = GIT_DIGIT,
	G = GIT_GLOB_SPECIAL,	/* *, ?, [, \\ */
	R = GIT_REGEX_SPECIAL,	/* $, (, ), +, ., ^, {, | */
	P = GIT_PATHSPEC_MAGIC, /* other non-alnum, except for ] and } */
	X = GIT_CNTRL,
	U = GIT_PUNCT,
	Z = GIT_CNTRL | GIT_SPACE
};

static const unsigned char sane_ctype[256] = {
	X, X, X, X, X, X, X, X, X, Z, Z, X, X, Z, X, X,		/*   0.. 15 */
	X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X,		/*  16.. 31 */
	S, P, P, P, R, P, P, P, R, R, G, R, P, P, R, P,		/*  32.. 47 */
	D, D, D, D, D, D, D, D, D, D, P, P, P, P, P, G,		/*  48.. 63 */
	P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,		/*  64.. 79 */
	A, A, A, A, A, A, A, A, A, A, A, G, G, U, R, P,		/*  80.. 95 */
	P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,		/*  96..111 */
	A, A, A, A, A, A, A, A, A, A, A, R, R, U, P, X,		/* 112..127 */
	/* Nothing in the 128.. range */
};

#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)

typedef unsigned char uchar;

/* What character marks an inverted character class? */
#define NEGATE_CLASS	'!'
#define NEGATE_CLASS2	'^'

#define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
				    && *(class) == *(litmatch) \
				    && strncmp((char*)class, litmatch, len) == 0)

#if defined STDC_HEADERS || !defined isascii
# define ISASCII(c) 1
#else
# define ISASCII(c) isascii(c)
#endif

#ifdef isblank
# define ISBLANK(c) (ISASCII(c) && isblank(c))
#else
# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
#endif

#ifdef isgraph
# define ISGRAPH(c) (ISASCII(c) && isgraph(c))
#else
# define ISGRAPH(c) (ISASCII(c) && isprint(c) && !isspace(c))
#endif

#define ISPRINT(c) (ISASCII(c) && isprint(c))
#define ISDIGIT(c) (ISASCII(c) && isdigit(c))
#define ISALNUM(c) (ISASCII(c) && isalnum(c))
#define ISALPHA(c) (ISASCII(c) && isalpha(c))
#define ISCNTRL(c) (ISASCII(c) && iscntrl(c))
#define ISLOWER(c) (ISASCII(c) && islower(c))
#define ISPUNCT(c) (ISASCII(c) && ispunct(c))
#define ISSPACE(c) (ISASCII(c) && isspace(c))
#define ISUPPER(c) (ISASCII(c) && isupper(c))
#define ISXDIGIT(c) (ISASCII(c) && isxdigit(c))

/* Match pattern "p" against "text" */
static int dowild(const uchar *p, const uchar *text, unsigned int flags)
{
	uchar p_ch;
	const uchar *pattern = p;

	for ( ; (p_ch = *p) != '\0'; text++, p++) {
		int matched, match_slash, negated;
		uchar t_ch, prev_ch;
		if ((t_ch = *text) == '\0' && p_ch != '*')
			return WM_ABORT_ALL;
		if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
			t_ch = tolower(t_ch);
		if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
			p_ch = tolower(p_ch);
		switch (p_ch) {
		case '\\':
			/* Literal match with following character.  Note that the test
			 * in "default" handles the p[1] == '\0' failure case. */
			p_ch = *++p;
			/* FALLTHROUGH */
		default:
			if (t_ch != p_ch)
				return WM_NOMATCH;
			continue;
		case '?':
			/* Match anything but '/'. */
			if ((flags & WM_PATHNAME) && t_ch == '/')
				return WM_NOMATCH;
			continue;
		case '*':
			if (*++p == '*') {
				const uchar *prev_p = p - 2;
				while (*++p == '*') {}
				if (!(flags & WM_PATHNAME))
					/* without WM_PATHNAME, '*' == '**' */
					match_slash = 1;
				else if ((prev_p < pattern || *prev_p == '/') &&
				    (*p == '\0' || *p == '/' ||
				     (p[0] == '\\' && p[1] == '/'))) {
					/*
					 * Assuming we already match 'foo/' and are at
					 * <star star slash>, just assume it matches
					 * nothing and go ahead match the rest of the
					 * pattern with the remaining string. This
					 * helps make foo/<*><*>/bar (<> because
					 * otherwise it breaks C comment syntax) match
					 * both foo/bar and foo/a/bar.
					 */
					if (p[0] == '/' &&
					    dowild(p + 1, text, flags) == WM_MATCH)
						return WM_MATCH;
					match_slash = 1;
				} else /* WM_PATHNAME is set */
					match_slash = 0;
			} else
				/* without WM_PATHNAME, '*' == '**' */
				match_slash = flags & WM_PATHNAME ? 0 : 1;
			if (*p == '\0') {
				/* Trailing "**" matches everything.  Trailing "*" matches
				 * only if there are no more slash characters. */
				if (!match_slash) {
					if (strchr((char*)text, '/') != NULL)
						return WM_NOMATCH;
				}
				return WM_MATCH;
			} else if (!match_slash && *p == '/') {
				/*
				 * _one_ asterisk followed by a slash
				 * with WM_PATHNAME matches the next
				 * directory
				 */
				const char *slash = strchr((char*)text, '/');
				if (!slash)
					return WM_NOMATCH;
				text = (const uchar*)slash;
				/* the slash is consumed by the top-level for loop */
				break;
			}
			while (1) {
				if (t_ch == '\0')
					break;
				/*
				 * Try to advance faster when an asterisk is
				 * followed by a literal. We know in this case
				 * that the string before the literal
				 * must belong to "*".
				 * If match_slash is false, do not look past
				 * the first slash as it cannot belong to '*'.
				 */
				if (!is_glob_special(*p)) {
					p_ch = *p;
					if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
						p_ch = tolower(p_ch);
					while ((t_ch = *text) != '\0' &&
					       (match_slash || t_ch != '/')) {
						if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
							t_ch = tolower(t_ch);
						if (t_ch == p_ch)
							break;
						text++;
					}
					if (t_ch != p_ch)
						return WM_NOMATCH;
				}
				if ((matched = dowild(p, text, flags)) != WM_NOMATCH) {
					if (!match_slash || matched != WM_ABORT_TO_STARSTAR)
						return matched;
				} else if (!match_slash && t_ch == '/')
					return WM_ABORT_TO_STARSTAR;
				t_ch = *++text;
			}
			return WM_ABORT_ALL;
		case '[':
			p_ch = *++p;
#ifdef NEGATE_CLASS2
			if (p_ch == NEGATE_CLASS2)
				p_ch = NEGATE_CLASS;
#endif
			/* Assign literal 1/0 because of "matched" comparison. */
			negated = p_ch == NEGATE_CLASS ? 1 : 0;
			if (negated) {
				/* Inverted character class. */
				p_ch = *++p;
			}
			prev_ch = 0;
			matched = 0;
			do {
				if (!p_ch)
					return WM_ABORT_ALL;
				if (p_ch == '\\') {
					p_ch = *++p;
					if (!p_ch)
						return WM_ABORT_ALL;
					if (t_ch == p_ch)
						matched = 1;
				} else if (p_ch == '-' && prev_ch && p[1] && p[1] != ']') {
					p_ch = *++p;
					if (p_ch == '\\') {
						p_ch = *++p;
						if (!p_ch)
							return WM_ABORT_ALL;
					}
					if (t_ch <= p_ch && t_ch >= prev_ch)
						matched = 1;
					else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch)) {
						uchar t_ch_upper = toupper(t_ch);
						if (t_ch_upper <= p_ch && t_ch_upper >= prev_ch)
							matched = 1;
					}
					p_ch = 0; /* This makes "prev_ch" get set to 0. */
				} else if (p_ch == '[' && p[1] == ':') {
					const uchar *s;
					int i;
					for (s = p += 2; (p_ch = *p) && p_ch != ']'; p++) {} /*SHARED ITERATOR*/
					if (!p_ch)
						return WM_ABORT_ALL;
					i = (int)(p - s - 1);
					if (i < 0 || p[-1] != ':') {
						/* Didn't find ":]", so treat like a normal set. */
						p = s - 2;
						p_ch = '[';
						if (t_ch == p_ch)
							matched = 1;
						continue;
					}
					if (CC_EQ(s,i, "alnum")) {
						if (ISALNUM(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "alpha")) {
						if (ISALPHA(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "blank")) {
						if (ISBLANK(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "cntrl")) {
						if (ISCNTRL(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "digit")) {
						if (ISDIGIT(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "graph")) {
						if (ISGRAPH(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "lower")) {
						if (ISLOWER(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "print")) {
						if (ISPRINT(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "punct")) {
						if (ISPUNCT(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "space")) {
						if (ISSPACE(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "upper")) {
						if (ISUPPER(t_ch))
							matched = 1;
						else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch))
							matched = 1;
					} else if (CC_EQ(s,i, "xdigit")) {
						if (ISXDIGIT(t_ch))
							matched = 1;
					} else /* malformed [:class:] string */
						return WM_ABORT_ALL;
					p_ch = 0; /* This makes "prev_ch" get set to 0. */
				} else if (t_ch == p_ch)
					matched = 1;
			} while (prev_ch = p_ch, (p_ch = *++p) != ']');
			if (matched == negated ||
			    ((flags & WM_PATHNAME) && t_ch == '/'))
				return WM_NOMATCH;
			continue;
		}
	}

	return *text ? WM_NOMATCH : WM_MATCH;
}

/* Match the "pattern" against the "text" string. */
int wildmatch(const char *pattern, const char *text, unsigned int flags)
{
	return dowild((const uchar*)pattern, (const uchar*)text, flags);
}
Commit	Line	Data
22a2d3d5 UG	1	/*
	2	* Copyright (C) the libgit2 contributors. All rights reserved.
	3	*
	4	* This file is part of libgit2, distributed under the GNU GPL v2 with
	5	* a Linking Exception. For full terms see the included COPYING file.
	6	*
	7	* Do shell-style pattern matching for ?, \, [], and * characters.
	8	* It is 8bit clean.
	9	*
	10	* Written by Rich $alz, mirror!rs, Wed Nov 26 19:03:17 EST 1986.
	11	* Rich $alz is now <rsalz@bbn.com>.
	12	*
	13	* Modified by Wayne Davison to special-case '/' matching, to make '**'
	14	* work differently than '*', and to fix the character-class code.
	15	*
	16	* Imported from git.git.
	17	*/
	18
	19	#include "wildmatch.h"
	20
	21	#define GIT_SPACE 0x01
	22	#define GIT_DIGIT 0x02
	23	#define GIT_ALPHA 0x04
	24	#define GIT_GLOB_SPECIAL 0x08
	25	#define GIT_REGEX_SPECIAL 0x10
	26	#define GIT_PATHSPEC_MAGIC 0x20
	27	#define GIT_CNTRL 0x40
	28	#define GIT_PUNCT 0x80
	29
	30	enum {
	31	S = GIT_SPACE,
	32	A = GIT_ALPHA,
	33	D = GIT_DIGIT,
	34	G = GIT_GLOB_SPECIAL, /* , ?, [, \\ /
	35	R = GIT_REGEX_SPECIAL, /* $, (, ), +, ., ^, {, \| */
	36	P = GIT_PATHSPEC_MAGIC, /* other non-alnum, except for ] and } */
	37	X = GIT_CNTRL,
	38	U = GIT_PUNCT,
	39	Z = GIT_CNTRL \| GIT_SPACE
	40	};
	41
	42	static const unsigned char sane_ctype[256] = {
	43	X, X, X, X, X, X, X, X, X, Z, Z, X, X, Z, X, X, /* 0.. 15 */
	44	X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, /* 16.. 31 */
	45	S, P, P, P, R, P, P, P, R, R, G, R, P, P, R, P, /* 32.. 47 */
	46	D, D, D, D, D, D, D, D, D, D, P, P, P, P, P, G, /* 48.. 63 */
	47	P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 64.. 79 */
	48	A, A, A, A, A, A, A, A, A, A, A, G, G, U, R, P, /* 80.. 95 */
	49	P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 96..111 */
	50	A, A, A, A, A, A, A, A, A, A, A, R, R, U, P, X, /* 112..127 */
	51	/* Nothing in the 128.. range */
	52	};
	53
	54	#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
	55	#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
	56
	57	typedef unsigned char uchar;
	58
	59	/* What character marks an inverted character class? */
	60	#define NEGATE_CLASS '!'
	61	#define NEGATE_CLASS2 '^'
	62
	63	#define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
	64	&& (class) == (litmatch) \
65	&& strncmp((char*)class, litmatch, len) == 0)
66
67	#if defined STDC_HEADERS \|\| !defined isascii
68	# define ISASCII(c) 1
69	#else
70	# define ISASCII(c) isascii(c)
71	#endif
72
73	#ifdef isblank
74	# define ISBLANK(c) (ISASCII(c) && isblank(c))
75	#else
76	# define ISBLANK(c) ((c) == ' ' \|\| (c) == '\t')
77	#endif
78
79	#ifdef isgraph
80	# define ISGRAPH(c) (ISASCII(c) && isgraph(c))
81	#else
82	# define ISGRAPH(c) (ISASCII(c) && isprint(c) && !isspace(c))
83	#endif
84
85	#define ISPRINT(c) (ISASCII(c) && isprint(c))
86	#define ISDIGIT(c) (ISASCII(c) && isdigit(c))
87	#define ISALNUM(c) (ISASCII(c) && isalnum(c))
88	#define ISALPHA(c) (ISASCII(c) && isalpha(c))
89	#define ISCNTRL(c) (ISASCII(c) && iscntrl(c))
90	#define ISLOWER(c) (ISASCII(c) && islower(c))
91	#define ISPUNCT(c) (ISASCII(c) && ispunct(c))
92	#define ISSPACE(c) (ISASCII(c) && isspace(c))
93	#define ISUPPER(c) (ISASCII(c) && isupper(c))
94	#define ISXDIGIT(c) (ISASCII(c) && isxdigit(c))
95
96	/* Match pattern "p" against "text" */
97	static int dowild(const uchar p, const uchar text, unsigned int flags)
98	{
99	uchar p_ch;
100	const uchar *pattern = p;
101
102	for ( ; (p_ch = *p) != '\0'; text++, p++) {
103	int matched, match_slash, negated;
104	uchar t_ch, prev_ch;
105	if ((t_ch = text) == '\0' && p_ch != '')
106	return WM_ABORT_ALL;
107	if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
108	t_ch = tolower(t_ch);
109	if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
110	p_ch = tolower(p_ch);
111	switch (p_ch) {
112	case '\\':
113	/* Literal match with following character. Note that the test
114	* in "default" handles the p[1] == '\0' failure case. */
115	p_ch = *++p;
116	/* FALLTHROUGH */
117	default:
118	if (t_ch != p_ch)
119	return WM_NOMATCH;
120	continue;
121	case '?':
122	/* Match anything but '/'. */
123	if ((flags & WM_PATHNAME) && t_ch == '/')
124	return WM_NOMATCH;
125	continue;
126	case '*':
127	if (++p == '') {
128	const uchar *prev_p = p - 2;
129	while (++p == '') {}
130	if (!(flags & WM_PATHNAME))
131	/* without WM_PATHNAME, '' == '' /
132	match_slash = 1;
133	else if ((prev_p < pattern \|\| *prev_p == '/') &&
134	(p == '\0' \|\| p == '/' \|\|
135	(p[0] == '\\' && p[1] == '/'))) {
136	/*
137	* Assuming we already match 'foo/' and are at
138	* <star star slash>, just assume it matches
139	* nothing and go ahead match the rest of the
140	* pattern with the remaining string. This
141	* helps make foo/<><>/bar (<> because
142	* otherwise it breaks C comment syntax) match
143	* both foo/bar and foo/a/bar.
144	*/
145	if (p[0] == '/' &&
146	dowild(p + 1, text, flags) == WM_MATCH)
147	return WM_MATCH;
148	match_slash = 1;
149	} else /* WM_PATHNAME is set */
150	match_slash = 0;
151	} else
152	/* without WM_PATHNAME, '' == '' /
153	match_slash = flags & WM_PATHNAME ? 0 : 1;
154	if (*p == '\0') {
155	/* Trailing "*" matches everything. Trailing "" matches
156	* only if there are no more slash characters. */
157	if (!match_slash) {
158	if (strchr((char*)text, '/') != NULL)
159	return WM_NOMATCH;
160	}
161	return WM_MATCH;
162	} else if (!match_slash && *p == '/') {
163	/*
164	* _one_ asterisk followed by a slash
165	* with WM_PATHNAME matches the next
166	* directory
167	*/
168	const char slash = strchr((char)text, '/');
169	if (!slash)
170	return WM_NOMATCH;
171	text = (const uchar*)slash;
172	/* the slash is consumed by the top-level for loop */
173	break;
174	}
175	while (1) {
176	if (t_ch == '\0')
177	break;
178	/*
179	* Try to advance faster when an asterisk is
180	* followed by a literal. We know in this case
181	* that the string before the literal
182	* must belong to "*".
183	* If match_slash is false, do not look past
184	* the first slash as it cannot belong to '*'.
185	*/
186	if (!is_glob_special(*p)) {
187	p_ch = *p;
188	if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
189	p_ch = tolower(p_ch);
190	while ((t_ch = *text) != '\0' &&
191	(match_slash \|\| t_ch != '/')) {
192	if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
193	t_ch = tolower(t_ch);
194	if (t_ch == p_ch)
195	break;
196	text++;
197	}
198	if (t_ch != p_ch)
199	return WM_NOMATCH;
200	}
201	if ((matched = dowild(p, text, flags)) != WM_NOMATCH) {
202	if (!match_slash \|\| matched != WM_ABORT_TO_STARSTAR)
203	return matched;
204	} else if (!match_slash && t_ch == '/')
205	return WM_ABORT_TO_STARSTAR;
206	t_ch = *++text;
207	}
208	return WM_ABORT_ALL;
209	case '[':
210	p_ch = *++p;
211	#ifdef NEGATE_CLASS2
212	if (p_ch == NEGATE_CLASS2)
213	p_ch = NEGATE_CLASS;
214	#endif
215	/* Assign literal 1/0 because of "matched" comparison. */
216	negated = p_ch == NEGATE_CLASS ? 1 : 0;
217	if (negated) {
218	/* Inverted character class. */
219	p_ch = *++p;
220	}
221	prev_ch = 0;
222	matched = 0;
223	do {
224	if (!p_ch)
225	return WM_ABORT_ALL;
226	if (p_ch == '\\') {
227	p_ch = *++p;
228	if (!p_ch)
229	return WM_ABORT_ALL;
230	if (t_ch == p_ch)
231	matched = 1;
232	} else if (p_ch == '-' && prev_ch && p[1] && p[1] != ']') {
233	p_ch = *++p;
234	if (p_ch == '\\') {
235	p_ch = *++p;
236	if (!p_ch)
237	return WM_ABORT_ALL;
238	}
239	if (t_ch <= p_ch && t_ch >= prev_ch)
240	matched = 1;
241	else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch)) {
242	uchar t_ch_upper = toupper(t_ch);
243	if (t_ch_upper <= p_ch && t_ch_upper >= prev_ch)
244	matched = 1;
245	}
246	p_ch = 0; /* This makes "prev_ch" get set to 0. */
247	} else if (p_ch == '[' && p[1] == ':') {
248	const uchar *s;
249	int i;
250	for (s = p += 2; (p_ch = p) && p_ch != ']'; p++) {} /SHARED ITERATOR*/
251	if (!p_ch)
252	return WM_ABORT_ALL;
253	i = (int)(p - s - 1);
254	if (i < 0 \|\| p[-1] != ':') {
255	/* Didn't find ":]", so treat like a normal set. */
256	p = s - 2;
257	p_ch = '[';
258	if (t_ch == p_ch)
259	matched = 1;
260	continue;
261	}
262	if (CC_EQ(s,i, "alnum")) {
263	if (ISALNUM(t_ch))
264	matched = 1;
265	} else if (CC_EQ(s,i, "alpha")) {
266	if (ISALPHA(t_ch))
267	matched = 1;
268	} else if (CC_EQ(s,i, "blank")) {
269	if (ISBLANK(t_ch))
270	matched = 1;
271	} else if (CC_EQ(s,i, "cntrl")) {
272	if (ISCNTRL(t_ch))
273	matched = 1;
274	} else if (CC_EQ(s,i, "digit")) {
275	if (ISDIGIT(t_ch))
276	matched = 1;
277	} else if (CC_EQ(s,i, "graph")) {
278	if (ISGRAPH(t_ch))
279	matched = 1;
280	} else if (CC_EQ(s,i, "lower")) {
281	if (ISLOWER(t_ch))
282	matched = 1;
283	} else if (CC_EQ(s,i, "print")) {
284	if (ISPRINT(t_ch))
285	matched = 1;
286	} else if (CC_EQ(s,i, "punct")) {
287	if (ISPUNCT(t_ch))
288	matched = 1;
289	} else if (CC_EQ(s,i, "space")) {
290	if (ISSPACE(t_ch))
291	matched = 1;
292	} else if (CC_EQ(s,i, "upper")) {
293	if (ISUPPER(t_ch))
294	matched = 1;
295	else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch))
296	matched = 1;
297	} else if (CC_EQ(s,i, "xdigit")) {
298	if (ISXDIGIT(t_ch))
299	matched = 1;
300	} else /* malformed [:class:] string */
301	return WM_ABORT_ALL;
302	p_ch = 0; /* This makes "prev_ch" get set to 0. */
303	} else if (t_ch == p_ch)
304	matched = 1;
305	} while (prev_ch = p_ch, (p_ch = *++p) != ']');
306	if (matched == negated \|\|
307	((flags & WM_PATHNAME) && t_ch == '/'))
308	return WM_NOMATCH;
309	continue;
310	}
311	}
312
313	return *text ? WM_NOMATCH : WM_MATCH;
314	}
315
316	/* Match the "pattern" against the "text" string. */
317	int wildmatch(const char pattern, const char text, unsigned int flags)
318	{
319	return dowild((const uchar)pattern, (const uchar)text, flags);
320	}