1 /* $NetBSD: fnmatch.c,v 1.11 1995/02/27 03:43:06 cgd Exp $ */
4 * Copyright (c) 1989, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
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11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #if defined(LIBC_SCCS) && !defined(lint)
41 static char sccsid[] = "@(#)fnmatch.c 8.2 (Berkeley) 4/16/94";
43 static char rcsid[] = "$NetBSD: fnmatch.c,v 1.11 1995/02/27 03:43:06 cgd Exp $";
45 #endif /* LIBC_SCCS and not lint */
48 * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6.
49 * Compares a filename or pathname to a pattern.
57 static const char *rangematch (const char *, int, int);
60 fnmatch(const char *pattern, const char *string, int flags)
62 const char *stringstart;
65 for (stringstart = string;;)
66 switch (c = *pattern++) {
68 return (*string == EOS ? 0 : FNM_NOMATCH);
72 if (*string == '/' && (flags & FNM_PATHNAME))
74 if (*string == '.' && (flags & FNM_PERIOD) &&
75 (string == stringstart ||
76 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
82 /* Collapse multiple stars. */
86 if (*string == '.' && (flags & FNM_PERIOD) &&
87 (string == stringstart ||
88 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
91 /* Optimize for pattern with * at end or before /. */
93 if (flags & FNM_PATHNAME)
94 return (strchr(string, '/') == NULL ?
98 else if (c == '/' && flags & FNM_PATHNAME) {
99 if ((string = strchr(string, '/')) == NULL)
100 return (FNM_NOMATCH);
104 /* General case, use recursion. */
105 while ((test = *string) != EOS) {
106 if (!fnmatch(pattern, string, flags & ~FNM_PERIOD))
108 if (test == '/' && flags & FNM_PATHNAME)
112 return (FNM_NOMATCH);
115 return (FNM_NOMATCH);
116 if (*string == '/' && flags & FNM_PATHNAME)
117 return (FNM_NOMATCH);
119 rangematch(pattern, *string, flags)) == NULL)
120 return (FNM_NOMATCH);
124 if (!(flags & FNM_NOESCAPE)) {
125 if ((c = *pattern++) == EOS) {
133 return (FNM_NOMATCH);
140 rangematch(const char *pattern, int test, int flags)
146 * A bracket expression starting with an unquoted circumflex
147 * character produces unspecified results (IEEE 1003.2-1992,
148 * 3.13.2). This implementation treats it like '!', for
149 * consistency with the regular expression syntax.
150 * J.T. Conklin (conklin@ngai.kaleida.com)
152 if (negate = (*pattern == '!' || *pattern == '^'))
155 for (ok = 0; (c = *pattern++) != ']';) {
156 if (c == '\\' && !(flags & FNM_NOESCAPE))
161 && (c2 = *(pattern+1)) != EOS && c2 != ']') {
163 if (c2 == '\\' && !(flags & FNM_NOESCAPE))
167 if (c <= test && test <= c2)
169 } else if (c == test)
172 return (ok == negate ? NULL : pattern);