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60a17f4e JH |
1 | /* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc. |
2 | ||
3 | This library is free software; you can redistribute it and/or | |
4 | modify it under the terms of the GNU Library General Public License as | |
5 | published by the Free Software Foundation; either version 2 of the | |
6 | License, or (at your option) any later version. | |
7 | ||
8 | This library is distributed in the hope that it will be useful, | |
9 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | Library General Public License for more details. | |
12 | ||
13 | You should have received a copy of the GNU Library General Public | |
14 | License along with this library; see the file COPYING.LIB. If | |
15 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
16 | Cambridge, MA 02139, USA. */ | |
17 | ||
18 | #ifdef HAVE_CONFIG_H | |
19 | #include "config.h" | |
20 | #endif | |
21 | ||
22 | #include <errno.h> | |
23 | #include <fnmatch.h> | |
24 | #include <ctype.h> | |
25 | ||
26 | ||
27 | /* Comment out all this code if we are using the GNU C Library, and are not | |
28 | actually compiling the library itself. This code is part of the GNU C | |
29 | Library, but also included in many other GNU distributions. Compiling | |
30 | and linking in this code is a waste when using the GNU C library | |
31 | (especially if it is a shared library). Rather than having every GNU | |
32 | program understand `configure --with-gnu-libc' and omit the object files, | |
33 | it is simpler to just do this in the source for each such file. */ | |
34 | ||
35 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__) | |
36 | ||
37 | ||
38 | #if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS) | |
39 | extern int errno; | |
40 | #endif | |
41 | ||
42 | /* Match STRING against the filename pattern PATTERN, returning zero if | |
43 | it matches, nonzero if not. */ | |
44 | int | |
45 | fnmatch (pattern, string, flags) | |
46 | const char *pattern; | |
47 | const char *string; | |
48 | int flags; | |
49 | { | |
50 | register const char *p = pattern, *n = string; | |
51 | register char c; | |
52 | ||
53 | /* Note that this evalutes C many times. */ | |
54 | #define FOLD(c) ((flags & FNM_CASEFOLD) && isupper (c) ? tolower (c) : (c)) | |
55 | ||
56 | while ((c = *p++) != '\0') | |
57 | { | |
58 | c = FOLD (c); | |
59 | ||
60 | switch (c) | |
61 | { | |
62 | case '?': | |
63 | if (*n == '\0') | |
64 | return FNM_NOMATCH; | |
65 | else if ((flags & FNM_FILE_NAME) && *n == '/') | |
66 | return FNM_NOMATCH; | |
67 | else if ((flags & FNM_PERIOD) && *n == '.' && | |
68 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
69 | return FNM_NOMATCH; | |
70 | break; | |
71 | ||
72 | case '\\': | |
73 | if (!(flags & FNM_NOESCAPE)) | |
74 | { | |
75 | c = *p++; | |
76 | c = FOLD (c); | |
77 | } | |
78 | if (FOLD (*n) != c) | |
79 | return FNM_NOMATCH; | |
80 | break; | |
81 | ||
82 | case '*': | |
83 | if ((flags & FNM_PERIOD) && *n == '.' && | |
84 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
85 | return FNM_NOMATCH; | |
86 | ||
87 | for (c = *p++; c == '?' || c == '*'; c = *p++, ++n) | |
88 | if (((flags & FNM_FILE_NAME) && *n == '/') || | |
89 | (c == '?' && *n == '\0')) | |
90 | return FNM_NOMATCH; | |
91 | ||
92 | if (c == '\0') | |
93 | return 0; | |
94 | ||
95 | { | |
96 | char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c; | |
97 | c1 = FOLD (c1); | |
98 | for (--p; *n != '\0'; ++n) | |
99 | if ((c == '[' || FOLD (*n) == c1) && | |
100 | fnmatch (p, n, flags & ~FNM_PERIOD) == 0) | |
101 | return 0; | |
102 | return FNM_NOMATCH; | |
103 | } | |
104 | ||
105 | case '[': | |
106 | { | |
107 | /* Nonzero if the sense of the character class is inverted. */ | |
108 | register int not; | |
109 | ||
110 | if (*n == '\0') | |
111 | return FNM_NOMATCH; | |
112 | ||
113 | if ((flags & FNM_PERIOD) && *n == '.' && | |
114 | (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/'))) | |
115 | return FNM_NOMATCH; | |
116 | ||
117 | not = (*p == '!' || *p == '^'); | |
118 | if (not) | |
119 | ++p; | |
120 | ||
121 | c = *p++; | |
122 | for (;;) | |
123 | { | |
124 | register char cstart = c, cend = c; | |
125 | ||
126 | if (!(flags & FNM_NOESCAPE) && c == '\\') | |
127 | cstart = cend = *p++; | |
128 | ||
129 | cstart = cend = FOLD (cstart); | |
130 | ||
131 | if (c == '\0') | |
132 | /* [ (unterminated) loses. */ | |
133 | return FNM_NOMATCH; | |
134 | ||
135 | c = *p++; | |
136 | c = FOLD (c); | |
137 | ||
138 | if ((flags & FNM_FILE_NAME) && c == '/') | |
139 | /* [/] can never match. */ | |
140 | return FNM_NOMATCH; | |
141 | ||
142 | if (c == '-' && *p != ']') | |
143 | { | |
144 | cend = *p++; | |
145 | if (!(flags & FNM_NOESCAPE) && cend == '\\') | |
146 | cend = *p++; | |
147 | if (cend == '\0') | |
148 | return FNM_NOMATCH; | |
149 | cend = FOLD (cend); | |
150 | ||
151 | c = *p++; | |
152 | } | |
153 | ||
154 | if (FOLD (*n) >= cstart && FOLD (*n) <= cend) | |
155 | goto matched; | |
156 | ||
157 | if (c == ']') | |
158 | break; | |
159 | } | |
160 | if (!not) | |
161 | return FNM_NOMATCH; | |
162 | break; | |
163 | ||
164 | matched:; | |
165 | /* Skip the rest of the [...] that already matched. */ | |
166 | while (c != ']') | |
167 | { | |
168 | if (c == '\0') | |
169 | /* [... (unterminated) loses. */ | |
170 | return FNM_NOMATCH; | |
171 | ||
172 | c = *p++; | |
173 | if (!(flags & FNM_NOESCAPE) && c == '\\') | |
174 | /* XXX 1003.2d11 is unclear if this is right. */ | |
175 | ++p; | |
176 | } | |
177 | if (not) | |
178 | return FNM_NOMATCH; | |
179 | } | |
180 | break; | |
181 | ||
182 | default: | |
183 | if (c != FOLD (*n)) | |
184 | return FNM_NOMATCH; | |
185 | } | |
186 | ||
187 | ++n; | |
188 | } | |
189 | ||
190 | if (*n == '\0') | |
191 | return 0; | |
192 | ||
193 | if ((flags & FNM_LEADING_DIR) && *n == '/') | |
194 | /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */ | |
195 | return 0; | |
196 | ||
197 | return FNM_NOMATCH; | |
198 | } | |
199 | ||
200 | #endif /* _LIBC or not __GNU_LIBRARY__. */ |