2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6.
41 * Compares a filename or pathname to a pattern.
44 #include <sys/param.h>
45 #include <sys/ctype.h>
46 #include <sys/libkern.h>
51 #define RANGE_NOMATCH 0
52 #define RANGE_ERROR (-1)
54 static int rangematch(const char *, char, int, char **);
57 fnmatch(pattern, string, flags)
58 const char *pattern, *string;
61 const char *stringstart;
65 for (stringstart = string;;)
66 switch (c = *pattern++) {
68 if ((flags & FNM_LEADING_DIR) && *string == '/')
70 return (*string == EOS ? 0 : FNM_NOMATCH);
74 if (*string == '/' && (flags & FNM_PATHNAME))
76 if (*string == '.' && (flags & FNM_PERIOD) &&
77 (string == stringstart ||
78 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
84 /* Collapse multiple stars. */
88 if (*string == '.' && (flags & FNM_PERIOD) &&
89 (string == stringstart ||
90 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
93 /* Optimize for pattern with * at end or before /. */
95 if (flags & FNM_PATHNAME)
96 return ((flags & FNM_LEADING_DIR) ||
97 index(string, '/') == NULL ?
101 else if (c == '/' && flags & FNM_PATHNAME) {
102 if ((string = index(string, '/')) == NULL)
103 return (FNM_NOMATCH);
107 /* General case, use recursion. */
108 while ((test = *string) != EOS) {
109 if (!fnmatch(pattern, string, flags & ~FNM_PERIOD))
111 if (test == '/' && flags & FNM_PATHNAME)
115 return (FNM_NOMATCH);
118 return (FNM_NOMATCH);
119 if (*string == '/' && (flags & FNM_PATHNAME))
120 return (FNM_NOMATCH);
121 if (*string == '.' && (flags & FNM_PERIOD) &&
122 (string == stringstart ||
123 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
124 return (FNM_NOMATCH);
126 switch (rangematch(pattern, *string, flags, &newp)) {
133 return (FNM_NOMATCH);
138 if (!(flags & FNM_NOESCAPE)) {
139 if ((c = *pattern++) == EOS) {
149 else if ((flags & FNM_CASEFOLD) &&
150 (tolower((unsigned char)c) ==
151 tolower((unsigned char)*string)))
154 return (FNM_NOMATCH);
162 rangematch(pattern, test, flags, newp)
172 * A bracket expression starting with an unquoted circumflex
173 * character produces unspecified results (IEEE 1003.2-1992,
174 * 3.13.2). This implementation treats it like '!', for
175 * consistency with the regular expression syntax.
176 * J.T. Conklin (conklin@ngai.kaleida.com)
178 if ( (negate = (*pattern == '!' || *pattern == '^')) )
181 if (flags & FNM_CASEFOLD)
182 test = tolower((unsigned char)test);
185 * A right bracket shall lose its special meaning and represent
186 * itself in a bracket expression if it occurs first in the list.
192 if (c == '\\' && !(flags & FNM_NOESCAPE))
195 return (RANGE_ERROR);
197 if (c == '/' && (flags & FNM_PATHNAME))
198 return (RANGE_NOMATCH);
200 if (flags & FNM_CASEFOLD)
201 c = tolower((unsigned char)c);
204 && (c2 = *(pattern+1)) != EOS && c2 != ']') {
206 if (c2 == '\\' && !(flags & FNM_NOESCAPE))
209 return (RANGE_ERROR);
211 if (flags & FNM_CASEFOLD)
212 c2 = tolower((unsigned char)c2);
214 if (c <= test && test <= c2)
216 } else if (c == test)
218 } while ((c = *pattern++) != ']');
220 *newp = (char *)(uintptr_t)pattern;
221 return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH);