1 /* $OpenBSD: fnmatch.c,v 1.9 2002/02/19 19:39:36 millert 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
10 * Redistribution and use in source and binary forms, with or without
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[] = "$OpenBSD: fnmatch.c,v 1.9 2002/02/19 19:39:36 millert 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.
60 #define RANGE_NOMATCH 0
61 #define RANGE_ERROR (-1)
63 static int rangematch(const char *, char, int, char **);
66 fnmatch(pattern, string, flags)
67 const char *pattern, *string;
70 const char *stringstart;
74 for (stringstart = string;;)
75 switch (c = *pattern++) {
77 if ((flags & FNM_LEADING_DIR) && *string == '/')
79 return (*string == EOS ? 0 : FNM_NOMATCH);
83 if (*string == '/' && (flags & FNM_PATHNAME))
85 if (*string == '.' && (flags & FNM_PERIOD) &&
86 (string == stringstart ||
87 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
93 /* Collapse multiple stars. */
97 if (*string == '.' && (flags & FNM_PERIOD) &&
98 (string == stringstart ||
99 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
100 return (FNM_NOMATCH);
102 /* Optimize for pattern with * at end or before /. */
104 if (flags & FNM_PATHNAME)
105 return ((flags & FNM_LEADING_DIR) ||
106 strchr(string, '/') == NULL ?
110 } else if (c == '/' && (flags & FNM_PATHNAME)) {
111 if ((string = strchr(string, '/')) == NULL)
112 return (FNM_NOMATCH);
116 /* General case, use recursion. */
117 while ((test = *string) != EOS) {
118 if (!fnmatch(pattern, string, flags & ~FNM_PERIOD))
120 if (test == '/' && (flags & FNM_PATHNAME))
124 return (FNM_NOMATCH);
127 return (FNM_NOMATCH);
128 if (*string == '/' && (flags & FNM_PATHNAME))
129 return (FNM_NOMATCH);
130 if (*string == '.' && (flags & FNM_PERIOD) &&
131 (string == stringstart ||
132 ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
133 return (FNM_NOMATCH);
135 switch (rangematch(pattern, *string, flags, &newp)) {
137 /* not a good range, treat as normal text */
143 return (FNM_NOMATCH);
148 if (!(flags & FNM_NOESCAPE)) {
149 if ((c = *pattern++) == EOS) {
157 if (c != *string && !((flags & FNM_CASEFOLD) &&
158 (tolower((unsigned char)c) ==
159 tolower((unsigned char)*string))))
160 return (FNM_NOMATCH);
168 rangematch(const char *pattern, char test, int flags, char **newp)
174 * A bracket expression starting with an unquoted circumflex
175 * character produces unspecified results (IEEE 1003.2-1992,
176 * 3.13.2). This implementation treats it like '!', for
177 * consistency with the regular expression syntax.
178 * J.T. Conklin (conklin@ngai.kaleida.com)
180 if ((negate = (*pattern == '!' || *pattern == '^')))
183 if (flags & FNM_CASEFOLD)
184 test = tolower((unsigned char)test);
187 * A right bracket shall lose its special meaning and represent
188 * itself in a bracket expression if it occurs first in the list.
194 if (c == '\\' && !(flags & FNM_NOESCAPE))
197 return (RANGE_ERROR);
198 if (c == '/' && (flags & FNM_PATHNAME))
199 return (RANGE_NOMATCH);
200 if ((flags & FNM_CASEFOLD))
201 c = tolower((unsigned char)c);
203 && (c2 = *(pattern+1)) != EOS && c2 != ']') {
205 if (c2 == '\\' && !(flags & FNM_NOESCAPE))
208 return (RANGE_ERROR);
209 if (flags & FNM_CASEFOLD)
210 c2 = tolower((unsigned char)c2);
211 if (c <= test && test <= c2)
213 } else if (c == test)
215 } while ((c = *pattern++) != ']');
217 *newp = (char *)pattern;
218 return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH);