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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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
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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
38 * @(#)fnmatch.c 8.2 (Berkeley) 4/16/94
39 * $NetBSD: fnmatch.c,v 1.11 1995/02/27 03:43:06 cgd Exp $
43 * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6.
44 * Compares a filename or pathname to a pattern.
52 static const char *rangematch (const char *, int, int);
55 fnmatch(const char *pattern, const char *string, int flags)
57 const char *stringstart;
60 for (stringstart = string;;)
61 switch (c = *pattern++) {
63 return (*string == EOS ? 0 : FNM_NOMATCH);
67 if (*string == '/' && (flags & FNM_PATHNAME))
69 if (*string == '.' && (flags & FNM_PERIOD) &&
70 (string == stringstart ||
71 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
77 /* Collapse multiple stars. */
81 if (*string == '.' && (flags & FNM_PERIOD) &&
82 (string == stringstart ||
83 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
86 /* Optimize for pattern with * at end or before /. */
88 if (flags & FNM_PATHNAME)
89 return (strchr(string, '/') == NULL ?
93 else if (c == '/' && flags & FNM_PATHNAME) {
94 if ((string = strchr(string, '/')) == NULL)
99 /* General case, use recursion. */
100 while ((test = *string) != EOS) {
101 if (!fnmatch(pattern, string, flags & ~FNM_PERIOD))
103 if (test == '/' && flags & FNM_PATHNAME)
107 return (FNM_NOMATCH);
110 return (FNM_NOMATCH);
111 if (*string == '/' && flags & FNM_PATHNAME)
112 return (FNM_NOMATCH);
114 rangematch(pattern, *string, flags)) == NULL)
115 return (FNM_NOMATCH);
119 if (!(flags & FNM_NOESCAPE)) {
120 if ((c = *pattern++) == EOS) {
128 return (FNM_NOMATCH);
135 rangematch(const char *pattern, int test, int flags)
141 * A bracket expression starting with an unquoted circumflex
142 * character produces unspecified results (IEEE 1003.2-1992,
143 * 3.13.2). This implementation treats it like '!', for
144 * consistency with the regular expression syntax.
145 * J.T. Conklin (conklin@ngai.kaleida.com)
147 if (negate = (*pattern == '!' || *pattern == '^'))
150 for (ok = 0; (c = *pattern++) != ']';) {
151 if (c == '\\' && !(flags & FNM_NOESCAPE))
156 && (c2 = *(pattern+1)) != EOS && c2 != ']') {
158 if (c2 == '\\' && !(flags & FNM_NOESCAPE))
162 if (c <= test && test <= c2)
164 } else if (c == test)
167 return (ok == negate ? NULL : pattern);