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1fc82a56 UD |
1 | /* Copyright (C) 1991-1993, 1996-1999, 2000 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | ||
4 | This library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | This library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with this library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
18 | ||
19 | /* Match STRING against the filename pattern PATTERN, returning zero if | |
20 | it matches, nonzero if not. */ | |
21 | static int FCT (const CHAR *pattern, const CHAR *string, | |
22 | int no_leading_period, int flags) internal_function; | |
23 | ||
24 | static int | |
25 | internal_function | |
26 | FCT (pattern, string, no_leading_period, flags) | |
27 | const CHAR *pattern; | |
28 | const CHAR *string; | |
29 | int no_leading_period; | |
30 | int flags; | |
31 | { | |
32 | register const CHAR *p = pattern, *n = string; | |
33 | register UCHAR c; | |
34 | ||
35 | while ((c = *p++) != L('\0')) | |
36 | { | |
37 | c = FOLD (c); | |
38 | ||
39 | switch (c) | |
40 | { | |
41 | case L('?'): | |
42 | if (*n == L('\0')) | |
43 | return FNM_NOMATCH; | |
44 | else if (*n == L('/') && (flags & FNM_FILE_NAME)) | |
45 | return FNM_NOMATCH; | |
46 | else if (*n == L('.') && no_leading_period | |
47 | && (n == string | |
48 | || (n[-1] == L('/') && (flags & FNM_FILE_NAME)))) | |
49 | return FNM_NOMATCH; | |
50 | break; | |
51 | ||
52 | case L('\\'): | |
53 | if (!(flags & FNM_NOESCAPE)) | |
54 | { | |
55 | c = *p++; | |
56 | if (c == L('\0')) | |
57 | /* Trailing \ loses. */ | |
58 | return FNM_NOMATCH; | |
59 | c = FOLD (c); | |
60 | } | |
61 | if (FOLD ((UCHAR) *n) != c) | |
62 | return FNM_NOMATCH; | |
63 | break; | |
64 | ||
65 | case L('*'): | |
66 | if (*n == L('.') && no_leading_period | |
67 | && (n == string | |
68 | || (n[-1] == L('/') && (flags & FNM_FILE_NAME)))) | |
69 | return FNM_NOMATCH; | |
70 | ||
71 | for (c = *p++; c == L('?') || c == L('*'); c = *p++) | |
72 | { | |
73 | if (*n == L('/') && (flags & FNM_FILE_NAME)) | |
74 | /* A slash does not match a wildcard under FNM_FILE_NAME. */ | |
75 | return FNM_NOMATCH; | |
76 | else if (c == L('?')) | |
77 | { | |
78 | /* A ? needs to match one character. */ | |
79 | if (*n == L('\0')) | |
80 | /* There isn't another character; no match. */ | |
81 | return FNM_NOMATCH; | |
82 | else | |
83 | /* One character of the string is consumed in matching | |
84 | this ? wildcard, so *??? won't match if there are | |
85 | less than three characters. */ | |
86 | ++n; | |
87 | } | |
88 | } | |
89 | ||
90 | if (c == L('\0')) | |
91 | /* The wildcard(s) is/are the last element of the pattern. | |
92 | If the name is a file name and contains another slash | |
93 | this does mean it cannot match. */ | |
94 | return ((flags & FNM_FILE_NAME) && STRCHR (n, L('/')) != NULL | |
95 | ? FNM_NOMATCH : 0); | |
96 | else | |
97 | { | |
98 | const CHAR *endp; | |
99 | ||
100 | endp = STRCHRNUL (n, (flags & FNM_FILE_NAME) ? L('/') : L('\0')); | |
101 | ||
102 | if (c == L('[')) | |
103 | { | |
104 | int flags2 = ((flags & FNM_FILE_NAME) | |
105 | ? flags : (flags & ~FNM_PERIOD)); | |
106 | ||
107 | for (--p; n < endp; ++n) | |
108 | if (FCT (p, n, (no_leading_period | |
109 | && (n == string | |
110 | || (n[-1] == L('/') | |
111 | && (flags & FNM_FILE_NAME)))), | |
112 | flags2) == 0) | |
113 | return 0; | |
114 | } | |
115 | else if (c == L('/') && (flags & FNM_FILE_NAME)) | |
116 | { | |
117 | while (*n != L('\0') && *n != L('/')) | |
118 | ++n; | |
119 | if (*n == L('/') | |
120 | && (FCT (p, n + 1, flags & FNM_PERIOD, flags) == 0)) | |
121 | return 0; | |
122 | } | |
123 | else | |
124 | { | |
125 | int flags2 = ((flags & FNM_FILE_NAME) | |
126 | ? flags : (flags & ~FNM_PERIOD)); | |
127 | ||
128 | if (c == L('\\') && !(flags & FNM_NOESCAPE)) | |
129 | c = *p; | |
130 | c = FOLD (c); | |
131 | for (--p; n < endp; ++n) | |
132 | if (FOLD ((UCHAR) *n) == c | |
133 | && (FCT (p, n, (no_leading_period | |
134 | && (n == string | |
135 | || (n[-1] == L('/') | |
136 | && (flags & FNM_FILE_NAME)))), | |
137 | flags2) == 0)) | |
138 | return 0; | |
139 | } | |
140 | } | |
141 | ||
142 | /* If we come here no match is possible with the wildcard. */ | |
143 | return FNM_NOMATCH; | |
144 | ||
145 | case L('['): | |
146 | { | |
147 | /* Nonzero if the sense of the character class is inverted. */ | |
148 | static int posixly_correct; | |
149 | register int not; | |
150 | CHAR cold; | |
151 | ||
152 | if (posixly_correct == 0) | |
153 | posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1; | |
154 | ||
155 | if (*n == L('\0')) | |
156 | return FNM_NOMATCH; | |
157 | ||
158 | if (*n == L('.') && no_leading_period | |
159 | && (n == string | |
160 | || (n[-1] == L('/') && (flags & FNM_FILE_NAME)))) | |
161 | return FNM_NOMATCH; | |
162 | ||
163 | if (*n == L('/') && (flags & FNM_FILE_NAME)) | |
164 | /* `/' cannot be matched. */ | |
165 | return FNM_NOMATCH; | |
166 | ||
167 | not = (*p == L('!') || (posixly_correct < 0 && *p == L('^'))); | |
168 | if (not) | |
169 | ++p; | |
170 | ||
171 | c = *p++; | |
172 | for (;;) | |
173 | { | |
174 | UCHAR fn = FOLD ((UCHAR) *n); | |
175 | ||
176 | if (!(flags & FNM_NOESCAPE) && c == L('\\')) | |
177 | { | |
178 | if (*p == L('\0')) | |
179 | return FNM_NOMATCH; | |
180 | c = FOLD ((UCHAR) *p); | |
181 | ++p; | |
182 | ||
183 | if (c == fn) | |
184 | goto matched; | |
185 | } | |
186 | else if (c == L('[') && *p == L(':')) | |
187 | { | |
188 | /* Leave room for the null. */ | |
189 | CHAR str[CHAR_CLASS_MAX_LENGTH + 1]; | |
190 | size_t c1 = 0; | |
191 | # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H) | |
192 | wctype_t wt; | |
193 | # endif | |
194 | const CHAR *startp = p; | |
195 | ||
196 | for (;;) | |
197 | { | |
198 | if (c1 == CHAR_CLASS_MAX_LENGTH) | |
199 | /* The name is too long and therefore the pattern | |
200 | is ill-formed. */ | |
201 | return FNM_NOMATCH; | |
202 | ||
203 | c = *++p; | |
204 | if (c == L(':') && p[1] == L(']')) | |
205 | { | |
206 | p += 2; | |
207 | break; | |
208 | } | |
209 | if (c < L('a') || c >= L('z')) | |
210 | { | |
211 | /* This cannot possibly be a character class name. | |
212 | Match it as a normal range. */ | |
213 | p = startp; | |
214 | c = L('['); | |
215 | goto normal_bracket; | |
216 | } | |
217 | str[c1++] = c; | |
218 | } | |
219 | str[c1] = L('\0'); | |
220 | ||
221 | # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H) | |
222 | wt = IS_CHAR_CLASS (str); | |
223 | if (wt == 0) | |
224 | /* Invalid character class name. */ | |
225 | return FNM_NOMATCH; | |
226 | ||
ea6eb383 | 227 | if (ISWCTYPE (BTOWC ((UCHAR) *n), wt)) |
1fc82a56 UD |
228 | goto matched; |
229 | # else | |
230 | if ((STREQ (str, L("alnum")) && ISALNUM ((UCHAR) *n)) | |
231 | || (STREQ (str, L("alpha")) && ISALPHA ((UCHAR) *n)) | |
232 | || (STREQ (str, L("blank")) && ISBLANK ((UCHAR) *n)) | |
233 | || (STREQ (str, L("cntrl")) && ISCNTRL ((UCHAR) *n)) | |
234 | || (STREQ (str, L("digit")) && ISDIGIT ((UCHAR) *n)) | |
235 | || (STREQ (str, L("graph")) && ISGRAPH ((UCHAR) *n)) | |
236 | || (STREQ (str, L("lower")) && ISLOWER ((UCHAR) *n)) | |
237 | || (STREQ (str, L("print")) && ISPRINT ((UCHAR) *n)) | |
238 | || (STREQ (str, L("punct")) && ISPUNCT ((UCHAR) *n)) | |
239 | || (STREQ (str, L("space")) && ISSPACE ((UCHAR) *n)) | |
240 | || (STREQ (str, L("upper")) && ISUPPER ((UCHAR) *n)) | |
241 | || (STREQ (str, L("xdigit")) && ISXDIGIT ((UCHAR) *n))) | |
242 | goto matched; | |
243 | # endif | |
244 | } | |
245 | else if (c == L('\0')) | |
246 | /* [ (unterminated) loses. */ | |
247 | return FNM_NOMATCH; | |
248 | else | |
249 | { | |
250 | normal_bracket: | |
251 | if (FOLD (c) == fn) | |
252 | goto matched; | |
253 | ||
254 | cold = c; | |
255 | c = *p++; | |
256 | ||
257 | if (c == L('-') && *p != L(']')) | |
258 | { | |
259 | /* It is a range. */ | |
260 | UCHAR cend = *p++; | |
261 | if (!(flags & FNM_NOESCAPE) && cend == L('\\')) | |
262 | cend = *p++; | |
263 | if (cend == L('\0')) | |
264 | return FNM_NOMATCH; | |
265 | ||
266 | if (cold <= fn && fn <= FOLD (cend)) | |
267 | goto matched; | |
268 | ||
269 | c = *p++; | |
270 | } | |
271 | } | |
272 | ||
273 | if (c == L(']')) | |
274 | break; | |
275 | } | |
276 | ||
277 | if (!not) | |
278 | return FNM_NOMATCH; | |
279 | break; | |
280 | ||
281 | matched: | |
282 | /* Skip the rest of the [...] that already matched. */ | |
283 | while (c != L(']')) | |
284 | { | |
285 | if (c == L('\0')) | |
286 | /* [... (unterminated) loses. */ | |
287 | return FNM_NOMATCH; | |
288 | ||
289 | c = *p++; | |
290 | if (!(flags & FNM_NOESCAPE) && c == L('\\')) | |
291 | { | |
292 | if (*p == L('\0')) | |
293 | return FNM_NOMATCH; | |
294 | /* XXX 1003.2d11 is unclear if this is right. */ | |
295 | ++p; | |
296 | } | |
297 | else if (c == L('[') && *p == L(':')) | |
298 | { | |
299 | do | |
300 | if (*++p == L('\0')) | |
301 | return FNM_NOMATCH; | |
302 | while (*p != L(':') || p[1] == L(']')); | |
303 | p += 2; | |
304 | c = *p; | |
305 | } | |
306 | } | |
307 | if (not) | |
308 | return FNM_NOMATCH; | |
309 | } | |
310 | break; | |
311 | ||
312 | default: | |
313 | if (c != FOLD ((UCHAR) *n)) | |
314 | return FNM_NOMATCH; | |
315 | } | |
316 | ||
317 | ++n; | |
318 | } | |
319 | ||
320 | if (*n == '\0') | |
321 | return 0; | |
322 | ||
323 | if ((flags & FNM_LEADING_DIR) && *n == L('/')) | |
324 | /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */ | |
325 | return 0; | |
326 | ||
327 | return FNM_NOMATCH; | |
ea6eb383 | 328 | } |
1fc82a56 UD |
329 | |
330 | #undef FOLD | |
331 | #undef CHAR | |
332 | #undef UCHAR | |
333 | #undef FCT | |
334 | #undef STRCHR | |
335 | #undef STRCHRNUL | |
336 | #undef L | |
ea6eb383 | 337 | #undef BTOWC |