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252b5132 RH |
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, 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifdef HAVE_CONFIG_H | |
22 | #if defined (CONFIG_BROKETS) | |
23 | /* We use <config.h> instead of "config.h" so that a compilation | |
24 | using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h | |
25 | (which it would do because it found this file in $srcdir). */ | |
26 | #include <config.h> | |
27 | #else | |
28 | #include "config.h" | |
29 | #endif | |
30 | #endif | |
31 | ||
32 | ||
33 | #ifndef _GNU_SOURCE | |
34 | #define _GNU_SOURCE | |
35 | #endif | |
36 | ||
37 | /* This code to undef const added in libiberty. */ | |
38 | #ifndef __STDC__ | |
39 | /* This is a separate conditional since some stdc systems | |
40 | reject `defined (const)'. */ | |
41 | #ifndef const | |
42 | #define const | |
43 | #endif | |
44 | #endif | |
45 | ||
46 | #include <errno.h> | |
47 | #include <fnmatch.h> | |
48 | #include <ctype.h> | |
49 | ||
50 | ||
51 | /* Comment out all this code if we are using the GNU C Library, and are not | |
52 | actually compiling the library itself. This code is part of the GNU C | |
53 | Library, but also included in many other GNU distributions. Compiling | |
54 | and linking in this code is a waste when using the GNU C library | |
55 | (especially if it is a shared library). Rather than having every GNU | |
56 | program understand `configure --with-gnu-libc' and omit the object files, | |
57 | it is simpler to just do this in the source for each such file. */ | |
58 | ||
59 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__) | |
60 | ||
61 | ||
62 | #if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS) | |
63 | extern int errno; | |
64 | #endif | |
65 | ||
66 | /* Match STRING against the filename pattern PATTERN, returning zero if | |
67 | it matches, nonzero if not. */ | |
68 | int | |
69 | fnmatch (pattern, string, flags) | |
70 | const char *pattern; | |
71 | const char *string; | |
72 | int flags; | |
73 | { | |
74 | register const char *p = pattern, *n = string; | |
75 | register unsigned char c; | |
76 | ||
77 | /* Note that this evalutes C many times. */ | |
78 | #define FOLD(c) ((flags & FNM_CASEFOLD) && isupper (c) ? tolower (c) : (c)) | |
79 | ||
80 | while ((c = *p++) != '\0') | |
81 | { | |
82 | c = FOLD (c); | |
83 | ||
84 | switch (c) | |
85 | { | |
86 | case '?': | |
87 | if (*n == '\0') | |
88 | return FNM_NOMATCH; | |
89 | else if ((flags & FNM_FILE_NAME) && *n == '/') | |
90 | return FNM_NOMATCH; | |
91 | else if ((flags & FNM_PERIOD) && *n == '.' && | |
92 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
93 | return FNM_NOMATCH; | |
94 | break; | |
95 | ||
96 | case '\\': | |
97 | if (!(flags & FNM_NOESCAPE)) | |
98 | { | |
99 | c = *p++; | |
100 | c = FOLD (c); | |
101 | } | |
102 | if (FOLD ((unsigned char)*n) != c) | |
103 | return FNM_NOMATCH; | |
104 | break; | |
105 | ||
106 | case '*': | |
107 | if ((flags & FNM_PERIOD) && *n == '.' && | |
108 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
109 | return FNM_NOMATCH; | |
110 | ||
111 | for (c = *p++; c == '?' || c == '*'; c = *p++, ++n) | |
112 | if (((flags & FNM_FILE_NAME) && *n == '/') || | |
113 | (c == '?' && *n == '\0')) | |
114 | return FNM_NOMATCH; | |
115 | ||
116 | if (c == '\0') | |
117 | return 0; | |
118 | ||
119 | { | |
120 | unsigned char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c; | |
121 | c1 = FOLD (c1); | |
122 | for (--p; *n != '\0'; ++n) | |
123 | if ((c == '[' || FOLD ((unsigned char)*n) == c1) && | |
124 | fnmatch (p, n, flags & ~FNM_PERIOD) == 0) | |
125 | return 0; | |
126 | return FNM_NOMATCH; | |
127 | } | |
128 | ||
129 | case '[': | |
130 | { | |
131 | /* Nonzero if the sense of the character class is inverted. */ | |
132 | register int not; | |
133 | ||
134 | if (*n == '\0') | |
135 | return FNM_NOMATCH; | |
136 | ||
137 | if ((flags & FNM_PERIOD) && *n == '.' && | |
138 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
139 | return FNM_NOMATCH; | |
140 | ||
141 | not = (*p == '!' || *p == '^'); | |
142 | if (not) | |
143 | ++p; | |
144 | ||
145 | c = *p++; | |
146 | for (;;) | |
147 | { | |
148 | register unsigned char cstart = c, cend = c; | |
149 | ||
150 | if (!(flags & FNM_NOESCAPE) && c == '\\') | |
151 | cstart = cend = *p++; | |
152 | ||
153 | cstart = cend = FOLD (cstart); | |
154 | ||
155 | if (c == '\0') | |
156 | /* [ (unterminated) loses. */ | |
157 | return FNM_NOMATCH; | |
158 | ||
159 | c = *p++; | |
160 | c = FOLD (c); | |
161 | ||
162 | if ((flags & FNM_FILE_NAME) && c == '/') | |
163 | /* [/] can never match. */ | |
164 | return FNM_NOMATCH; | |
165 | ||
166 | if (c == '-' && *p != ']') | |
167 | { | |
168 | cend = *p++; | |
169 | if (!(flags & FNM_NOESCAPE) && cend == '\\') | |
170 | cend = *p++; | |
171 | if (cend == '\0') | |
172 | return FNM_NOMATCH; | |
173 | cend = FOLD (cend); | |
174 | ||
175 | c = *p++; | |
176 | } | |
177 | ||
178 | if (FOLD ((unsigned char)*n) >= cstart | |
179 | && FOLD ((unsigned char)*n) <= cend) | |
180 | goto matched; | |
181 | ||
182 | if (c == ']') | |
183 | break; | |
184 | } | |
185 | if (!not) | |
186 | return FNM_NOMATCH; | |
187 | break; | |
188 | ||
189 | matched:; | |
190 | /* Skip the rest of the [...] that already matched. */ | |
191 | while (c != ']') | |
192 | { | |
193 | if (c == '\0') | |
194 | /* [... (unterminated) loses. */ | |
195 | return FNM_NOMATCH; | |
196 | ||
197 | c = *p++; | |
198 | if (!(flags & FNM_NOESCAPE) && c == '\\') | |
199 | /* XXX 1003.2d11 is unclear if this is right. */ | |
200 | ++p; | |
201 | } | |
202 | if (not) | |
203 | return FNM_NOMATCH; | |
204 | } | |
205 | break; | |
206 | ||
207 | default: | |
208 | if (c != FOLD ((unsigned char)*n)) | |
209 | return FNM_NOMATCH; | |
210 | } | |
211 | ||
212 | ++n; | |
213 | } | |
214 | ||
215 | if (*n == '\0') | |
216 | return 0; | |
217 | ||
218 | if ((flags & FNM_LEADING_DIR) && *n == '/') | |
219 | /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */ | |
220 | return 0; | |
221 | ||
222 | return FNM_NOMATCH; | |
223 | } | |
224 | ||
225 | #endif /* _LIBC or not __GNU_LIBRARY__. */ |