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86bc0974 ILT |
1 | /* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc. |
2 | ||
3 | NOTE: The canonical source of this file is maintained with the GNU C Library. | |
4 | Bugs can be reported to bug-glibc@prep.ai.mit.edu. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the | |
8 | Free Software Foundation; either version 2, or (at your option) any | |
9 | later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | #ifdef HAVE_CONFIG_H | |
21 | #if defined (CONFIG_BROKETS) | |
22 | /* We use <config.h> instead of "config.h" so that a compilation | |
23 | using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h | |
24 | (which it would do because it found this file in $srcdir). */ | |
25 | #include <config.h> | |
26 | #else | |
27 | #include "config.h" | |
28 | #endif | |
29 | #endif | |
30 | ||
31 | ||
32 | #ifndef _GNU_SOURCE | |
33 | #define _GNU_SOURCE | |
34 | #endif | |
35 | ||
36 | #include <errno.h> | |
37 | #include <fnmatch.h> | |
38 | #include <ctype.h> | |
39 | ||
40 | ||
41 | /* Comment out all this code if we are using the GNU C Library, and are not | |
42 | actually compiling the library itself. This code is part of the GNU C | |
43 | Library, but also included in many other GNU distributions. Compiling | |
44 | and linking in this code is a waste when using the GNU C library | |
45 | (especially if it is a shared library). Rather than having every GNU | |
46 | program understand `configure --with-gnu-libc' and omit the object files, | |
47 | it is simpler to just do this in the source for each such file. */ | |
48 | ||
49 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__) | |
50 | ||
51 | ||
52 | #if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS) | |
53 | extern int errno; | |
54 | #endif | |
55 | ||
56 | /* Match STRING against the filename pattern PATTERN, returning zero if | |
57 | it matches, nonzero if not. */ | |
58 | int | |
59 | fnmatch (pattern, string, flags) | |
60 | const char *pattern; | |
61 | const char *string; | |
62 | int flags; | |
63 | { | |
64 | register const char *p = pattern, *n = string; | |
65 | register char c; | |
66 | ||
67 | /* Note that this evalutes C many times. */ | |
68 | #define FOLD(c) ((flags & FNM_CASEFOLD) && isupper (c) ? tolower (c) : (c)) | |
69 | ||
70 | while ((c = *p++) != '\0') | |
71 | { | |
72 | c = FOLD (c); | |
73 | ||
74 | switch (c) | |
75 | { | |
76 | case '?': | |
77 | if (*n == '\0') | |
78 | return FNM_NOMATCH; | |
79 | else if ((flags & FNM_FILE_NAME) && *n == '/') | |
80 | return FNM_NOMATCH; | |
81 | else if ((flags & FNM_PERIOD) && *n == '.' && | |
82 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
83 | return FNM_NOMATCH; | |
84 | break; | |
85 | ||
86 | case '\\': | |
87 | if (!(flags & FNM_NOESCAPE)) | |
88 | { | |
89 | c = *p++; | |
90 | c = FOLD (c); | |
91 | } | |
92 | if (FOLD (*n) != c) | |
93 | return FNM_NOMATCH; | |
94 | break; | |
95 | ||
96 | case '*': | |
97 | if ((flags & FNM_PERIOD) && *n == '.' && | |
98 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
99 | return FNM_NOMATCH; | |
100 | ||
101 | for (c = *p++; c == '?' || c == '*'; c = *p++, ++n) | |
102 | if (((flags & FNM_FILE_NAME) && *n == '/') || | |
103 | (c == '?' && *n == '\0')) | |
104 | return FNM_NOMATCH; | |
105 | ||
106 | if (c == '\0') | |
107 | return 0; | |
108 | ||
109 | { | |
110 | char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c; | |
111 | c1 = FOLD (c1); | |
112 | for (--p; *n != '\0'; ++n) | |
113 | if ((c == '[' || FOLD (*n) == c1) && | |
114 | fnmatch (p, n, flags & ~FNM_PERIOD) == 0) | |
115 | return 0; | |
116 | return FNM_NOMATCH; | |
117 | } | |
118 | ||
119 | case '[': | |
120 | { | |
121 | /* Nonzero if the sense of the character class is inverted. */ | |
122 | register int not; | |
123 | ||
124 | if (*n == '\0') | |
125 | return FNM_NOMATCH; | |
126 | ||
127 | if ((flags & FNM_PERIOD) && *n == '.' && | |
128 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
129 | return FNM_NOMATCH; | |
130 | ||
131 | not = (*p == '!' || *p == '^'); | |
132 | if (not) | |
133 | ++p; | |
134 | ||
135 | c = *p++; | |
136 | for (;;) | |
137 | { | |
138 | register char cstart = c, cend = c; | |
139 | ||
140 | if (!(flags & FNM_NOESCAPE) && c == '\\') | |
141 | cstart = cend = *p++; | |
142 | ||
143 | cstart = cend = FOLD (cstart); | |
144 | ||
145 | if (c == '\0') | |
146 | /* [ (unterminated) loses. */ | |
147 | return FNM_NOMATCH; | |
148 | ||
149 | c = *p++; | |
150 | c = FOLD (c); | |
151 | ||
152 | if ((flags & FNM_FILE_NAME) && c == '/') | |
153 | /* [/] can never match. */ | |
154 | return FNM_NOMATCH; | |
155 | ||
156 | if (c == '-' && *p != ']') | |
157 | { | |
158 | cend = *p++; | |
159 | if (!(flags & FNM_NOESCAPE) && cend == '\\') | |
160 | cend = *p++; | |
161 | if (cend == '\0') | |
162 | return FNM_NOMATCH; | |
163 | cend = FOLD (cend); | |
164 | ||
165 | c = *p++; | |
166 | } | |
167 | ||
168 | if (FOLD (*n) >= cstart && FOLD (*n) <= cend) | |
169 | goto matched; | |
170 | ||
171 | if (c == ']') | |
172 | break; | |
173 | } | |
174 | if (!not) | |
175 | return FNM_NOMATCH; | |
176 | break; | |
177 | ||
178 | matched:; | |
179 | /* Skip the rest of the [...] that already matched. */ | |
180 | while (c != ']') | |
181 | { | |
182 | if (c == '\0') | |
183 | /* [... (unterminated) loses. */ | |
184 | return FNM_NOMATCH; | |
185 | ||
186 | c = *p++; | |
187 | if (!(flags & FNM_NOESCAPE) && c == '\\') | |
188 | /* XXX 1003.2d11 is unclear if this is right. */ | |
189 | ++p; | |
190 | } | |
191 | if (not) | |
192 | return FNM_NOMATCH; | |
193 | } | |
194 | break; | |
195 | ||
196 | default: | |
197 | if (c != FOLD (*n)) | |
198 | return FNM_NOMATCH; | |
199 | } | |
200 | ||
201 | ++n; | |
202 | } | |
203 | ||
204 | if (*n == '\0') | |
205 | return 0; | |
206 | ||
207 | if ((flags & FNM_LEADING_DIR) && *n == '/') | |
208 | /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */ | |
209 | return 0; | |
210 | ||
211 | return FNM_NOMATCH; | |
212 | } | |
213 | ||
214 | #endif /* _LIBC or not __GNU_LIBRARY__. */ |