| 1 | /* $NetBSD: fnmatch.c,v 1.11 1995/02/27 03:43:06 cgd Exp $ */
|
|---|
| 2 |
|
|---|
| 3 | /*
|
|---|
| 4 | * Copyright (c) 1989, 1993, 1994
|
|---|
| 5 | * The Regents of the University of California. All rights reserved.
|
|---|
| 6 | *
|
|---|
| 7 | * This code is derived from software contributed to Berkeley by
|
|---|
| 8 | * Guido van Rossum.
|
|---|
| 9 | *
|
|---|
| 10 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 11 | * modification, are permitted provided that the following conditions
|
|---|
| 12 | * are met:
|
|---|
| 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. Neither the name of the University nor the names of its contributors
|
|---|
| 19 | * may be used to endorse or promote products derived from this software
|
|---|
| 20 | * without specific prior written permission.
|
|---|
| 21 | *
|
|---|
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 32 | * SUCH DAMAGE.
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #if defined(LIBC_SCCS) && !defined(lint)
|
|---|
| 36 | #if 0
|
|---|
| 37 | static char sccsid[] = "@(#)fnmatch.c 8.2 (Berkeley) 4/16/94";
|
|---|
| 38 | #else
|
|---|
| 39 | static char rcsid[] = "$NetBSD: fnmatch.c,v 1.11 1995/02/27 03:43:06 cgd Exp $";
|
|---|
| 40 | #endif
|
|---|
| 41 | #endif /* LIBC_SCCS and not lint */
|
|---|
| 42 |
|
|---|
| 43 | /*
|
|---|
| 44 | * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6.
|
|---|
| 45 | * Compares a filename or pathname to a pattern.
|
|---|
| 46 | */
|
|---|
| 47 |
|
|---|
| 48 | #ifdef HAVE_CONFIG_H
|
|---|
| 49 | #include <config.h>
|
|---|
| 50 | #endif
|
|---|
| 51 |
|
|---|
| 52 | #include <roken.h>
|
|---|
| 53 |
|
|---|
| 54 | #include <fnmatch.h>
|
|---|
| 55 | #include <string.h>
|
|---|
| 56 |
|
|---|
| 57 | #define EOS '\0'
|
|---|
| 58 |
|
|---|
| 59 | static const char *rangematch (const char *, int, int);
|
|---|
| 60 |
|
|---|
| 61 | ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
|
|---|
| 62 | rk_fnmatch(const char *pattern, const char *string, int flags)
|
|---|
| 63 | {
|
|---|
| 64 | const char *stringstart;
|
|---|
| 65 | char c, test;
|
|---|
| 66 |
|
|---|
| 67 | for (stringstart = string;;)
|
|---|
| 68 | switch (c = *pattern++) {
|
|---|
| 69 | case EOS:
|
|---|
| 70 | return (*string == EOS ? 0 : FNM_NOMATCH);
|
|---|
| 71 | case '?':
|
|---|
| 72 | if (*string == EOS)
|
|---|
| 73 | return (FNM_NOMATCH);
|
|---|
| 74 | if (*string == '/' && (flags & FNM_PATHNAME))
|
|---|
| 75 | return (FNM_NOMATCH);
|
|---|
| 76 | if (*string == '.' && (flags & FNM_PERIOD) &&
|
|---|
| 77 | (string == stringstart ||
|
|---|
| 78 | ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
|
|---|
| 79 | return (FNM_NOMATCH);
|
|---|
| 80 | ++string;
|
|---|
| 81 | break;
|
|---|
| 82 | case '*':
|
|---|
| 83 | c = *pattern;
|
|---|
| 84 | /* Collapse multiple stars. */
|
|---|
| 85 | while (c == '*')
|
|---|
| 86 | c = *++pattern;
|
|---|
| 87 |
|
|---|
| 88 | if (*string == '.' && (flags & FNM_PERIOD) &&
|
|---|
| 89 | (string == stringstart ||
|
|---|
| 90 | ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
|
|---|
| 91 | return (FNM_NOMATCH);
|
|---|
| 92 |
|
|---|
| 93 | /* Optimize for pattern with * at end or before /. */
|
|---|
| 94 | if (c == EOS)
|
|---|
| 95 | if (flags & FNM_PATHNAME)
|
|---|
| 96 | return (strchr(string, '/') == NULL ?
|
|---|
| 97 | 0 : FNM_NOMATCH);
|
|---|
| 98 | else
|
|---|
| 99 | return (0);
|
|---|
| 100 | else if (c == '/' && flags & FNM_PATHNAME) {
|
|---|
| 101 | if ((string = strchr(string, '/')) == NULL)
|
|---|
| 102 | return (FNM_NOMATCH);
|
|---|
| 103 | break;
|
|---|
| 104 | }
|
|---|
| 105 |
|
|---|
| 106 | /* General case, use recursion. */
|
|---|
| 107 | while ((test = *string) != EOS) {
|
|---|
| 108 | if (!rk_fnmatch(pattern, string, flags & ~FNM_PERIOD))
|
|---|
| 109 | return (0);
|
|---|
| 110 | if (test == '/' && flags & FNM_PATHNAME)
|
|---|
| 111 | break;
|
|---|
| 112 | ++string;
|
|---|
| 113 | }
|
|---|
| 114 | return (FNM_NOMATCH);
|
|---|
| 115 | case '[':
|
|---|
| 116 | if (*string == EOS)
|
|---|
| 117 | return (FNM_NOMATCH);
|
|---|
| 118 | if (*string == '/' && flags & FNM_PATHNAME)
|
|---|
| 119 | return (FNM_NOMATCH);
|
|---|
| 120 | if ((pattern =
|
|---|
| 121 | rangematch(pattern, *string, flags)) == NULL)
|
|---|
| 122 | return (FNM_NOMATCH);
|
|---|
| 123 | ++string;
|
|---|
| 124 | break;
|
|---|
| 125 | case '\\':
|
|---|
| 126 | if (!(flags & FNM_NOESCAPE)) {
|
|---|
| 127 | if ((c = *pattern++) == EOS) {
|
|---|
| 128 | c = '\\';
|
|---|
| 129 | --pattern;
|
|---|
| 130 | }
|
|---|
| 131 | }
|
|---|
| 132 | /* FALLTHROUGH */
|
|---|
| 133 | default:
|
|---|
| 134 | if (c != *string++)
|
|---|
| 135 | return (FNM_NOMATCH);
|
|---|
| 136 | break;
|
|---|
| 137 | }
|
|---|
| 138 | /* NOTREACHED */
|
|---|
| 139 | }
|
|---|
| 140 |
|
|---|
| 141 | static const char *
|
|---|
| 142 | rangematch(const char *pattern, int test, int flags)
|
|---|
| 143 | {
|
|---|
| 144 | int negate, ok;
|
|---|
| 145 | char c, c2;
|
|---|
| 146 |
|
|---|
| 147 | /*
|
|---|
| 148 | * A bracket expression starting with an unquoted circumflex
|
|---|
| 149 | * character produces unspecified results (IEEE 1003.2-1992,
|
|---|
| 150 | * 3.13.2). This implementation treats it like '!', for
|
|---|
| 151 | * consistency with the regular expression syntax.
|
|---|
| 152 | * J.T. Conklin (conklin@ngai.kaleida.com)
|
|---|
| 153 | */
|
|---|
| 154 | if (negate = (*pattern == '!' || *pattern == '^'))
|
|---|
| 155 | ++pattern;
|
|---|
| 156 |
|
|---|
| 157 | for (ok = 0; (c = *pattern++) != ']';) {
|
|---|
| 158 | if (c == '\\' && !(flags & FNM_NOESCAPE))
|
|---|
| 159 | c = *pattern++;
|
|---|
| 160 | if (c == EOS)
|
|---|
| 161 | return (NULL);
|
|---|
| 162 | if (*pattern == '-'
|
|---|
| 163 | && (c2 = *(pattern+1)) != EOS && c2 != ']') {
|
|---|
| 164 | pattern += 2;
|
|---|
| 165 | if (c2 == '\\' && !(flags & FNM_NOESCAPE))
|
|---|
| 166 | c2 = *pattern++;
|
|---|
| 167 | if (c2 == EOS)
|
|---|
| 168 | return (NULL);
|
|---|
| 169 | if (c <= test && test <= c2)
|
|---|
| 170 | ok = 1;
|
|---|
| 171 | } else if (c == test)
|
|---|
| 172 | ok = 1;
|
|---|
| 173 | }
|
|---|
| 174 | return (ok == negate ? NULL : pattern);
|
|---|
| 175 | }
|
|---|
