Update.
[glibc.git] / posix / fnmatch.c
blobb677e4bf410f021ac0fb987457a7e7eef47ae0e4
1 /* Copyright (C) 1991-93,96-99,2000,01,02 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C 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 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #if HAVE_CONFIG_H
20 # include <config.h>
21 #endif
23 /* Enable GNU extensions in fnmatch.h. */
24 #ifndef _GNU_SOURCE
25 # define _GNU_SOURCE 1
26 #endif
28 #include <assert.h>
29 #include <errno.h>
30 #include <fnmatch.h>
31 #include <ctype.h>
33 #if HAVE_STRING_H || defined _LIBC
34 # include <string.h>
35 #else
36 # include <strings.h>
37 #endif
39 #if defined STDC_HEADERS || defined _LIBC
40 # include <stdlib.h>
41 #endif
43 /* For platform which support the ISO C amendement 1 functionality we
44 support user defined character classes. */
45 #if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
46 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
47 # include <wchar.h>
48 # include <wctype.h>
49 #endif
51 /* We need some of the locale data (the collation sequence information)
52 but there is no interface to get this information in general. Therefore
53 we support a correct implementation only in glibc. */
54 #ifdef _LIBC
55 # include "../locale/localeinfo.h"
56 # include "../locale/elem-hash.h"
57 # include "../locale/coll-lookup.h"
58 # include <shlib-compat.h>
60 # define CONCAT(a,b) __CONCAT(a,b)
61 # define mbsinit __mbsinit
62 # define mbsrtowcs __mbsrtowcs
63 # define fnmatch __fnmatch
64 extern int fnmatch (const char *pattern, const char *string, int flags);
65 #endif
67 /* We often have to test for FNM_FILE_NAME and FNM_PERIOD being both set. */
68 #define NO_LEADING_PERIOD(flags) \
69 ((flags & (FNM_FILE_NAME | FNM_PERIOD)) == (FNM_FILE_NAME | FNM_PERIOD))
71 /* Comment out all this code if we are using the GNU C Library, and are not
72 actually compiling the library itself. This code is part of the GNU C
73 Library, but also included in many other GNU distributions. Compiling
74 and linking in this code is a waste when using the GNU C library
75 (especially if it is a shared library). Rather than having every GNU
76 program understand `configure --with-gnu-libc' and omit the object files,
77 it is simpler to just do this in the source for each such file. */
79 #if defined _LIBC || !defined __GNU_LIBRARY__
82 # if defined STDC_HEADERS || !defined isascii
83 # define ISASCII(c) 1
84 # else
85 # define ISASCII(c) isascii(c)
86 # endif
88 # ifdef isblank
89 # define ISBLANK(c) (ISASCII (c) && isblank (c))
90 # else
91 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
92 # endif
93 # ifdef isgraph
94 # define ISGRAPH(c) (ISASCII (c) && isgraph (c))
95 # else
96 # define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
97 # endif
99 # define ISPRINT(c) (ISASCII (c) && isprint (c))
100 # define ISDIGIT(c) (ISASCII (c) && isdigit (c))
101 # define ISALNUM(c) (ISASCII (c) && isalnum (c))
102 # define ISALPHA(c) (ISASCII (c) && isalpha (c))
103 # define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
104 # define ISLOWER(c) (ISASCII (c) && islower (c))
105 # define ISPUNCT(c) (ISASCII (c) && ispunct (c))
106 # define ISSPACE(c) (ISASCII (c) && isspace (c))
107 # define ISUPPER(c) (ISASCII (c) && isupper (c))
108 # define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
110 # define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
112 # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
113 /* The GNU C library provides support for user-defined character classes
114 and the functions from ISO C amendement 1. */
115 # ifdef CHARCLASS_NAME_MAX
116 # define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
117 # else
118 /* This shouldn't happen but some implementation might still have this
119 problem. Use a reasonable default value. */
120 # define CHAR_CLASS_MAX_LENGTH 256
121 # endif
123 # ifdef _LIBC
124 # define IS_CHAR_CLASS(string) __wctype (string)
125 # else
126 # define IS_CHAR_CLASS(string) wctype (string)
127 # endif
129 # ifdef _LIBC
130 # define ISWCTYPE(WC, WT) __iswctype (WC, WT)
131 # else
132 # define ISWCTYPE(WC, WT) iswctype (WC, WT)
133 # endif
135 # if (HAVE_MBSTATE_T && HAVE_MBSRTOWCS) || _LIBC
136 /* In this case we are implementing the multibyte character handling. */
137 # define HANDLE_MULTIBYTE 1
138 # endif
140 # else
141 # define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
143 # define IS_CHAR_CLASS(string) \
144 (STREQ (string, "alpha") || STREQ (string, "upper") \
145 || STREQ (string, "lower") || STREQ (string, "digit") \
146 || STREQ (string, "alnum") || STREQ (string, "xdigit") \
147 || STREQ (string, "space") || STREQ (string, "print") \
148 || STREQ (string, "punct") || STREQ (string, "graph") \
149 || STREQ (string, "cntrl") || STREQ (string, "blank"))
150 # endif
152 /* Avoid depending on library functions or files
153 whose names are inconsistent. */
155 # if !defined _LIBC && !defined getenv
156 extern char *getenv ();
157 # endif
159 # ifndef errno
160 extern int errno;
161 # endif
163 /* Global variable. */
164 static int posixly_correct;
166 /* This function doesn't exist on most systems. */
168 # if !defined HAVE___STRCHRNUL && !defined _LIBC
169 static char *
170 __strchrnul (s, c)
171 const char *s;
172 int c;
174 char *result = strchr (s, c);
175 if (result == NULL)
176 result = strchr (s, '\0');
177 return result;
179 # endif
181 # if HANDLE_MULTIBYTE && !defined HAVE___STRCHRNUL && !defined _LIBC
182 static wchar_t *
183 __wcschrnul (s, c)
184 const wchar_t *s;
185 wint_t c;
187 wchar_t *result = wcschr (s, c);
188 if (result == NULL)
189 result = wcschr (s, '\0');
190 return result;
192 # endif
194 # ifndef internal_function
195 /* Inside GNU libc we mark some function in a special way. In other
196 environments simply ignore the marking. */
197 # define internal_function
198 # endif
200 /* Note that this evaluates C many times. */
201 # ifdef _LIBC
202 # define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
203 # else
204 # define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
205 # endif
206 # define CHAR char
207 # define UCHAR unsigned char
208 # define INT int
209 # define FCT internal_fnmatch
210 # define EXT ext_match
211 # define END end_pattern
212 # define L(CS) CS
213 # ifdef _LIBC
214 # define BTOWC(C) __btowc (C)
215 # else
216 # define BTOWC(C) btowc (C)
217 # endif
218 # define STRLEN(S) strlen (S)
219 # define STRCAT(D, S) strcat (D, S)
220 # define MEMPCPY(D, S, N) __mempcpy (D, S, N)
221 # define MEMCHR(S, C, N) memchr (S, C, N)
222 # define STRCOLL(S1, S2) strcoll (S1, S2)
223 # include "fnmatch_loop.c"
226 # if HANDLE_MULTIBYTE
227 /* Note that this evaluates C many times. */
228 # ifdef _LIBC
229 # define FOLD(c) ((flags & FNM_CASEFOLD) ? towlower (c) : (c))
230 # else
231 # define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? towlower (c) : (c))
232 # endif
233 # define CHAR wchar_t
234 # define UCHAR wint_t
235 # define INT wint_t
236 # define FCT internal_fnwmatch
237 # define EXT ext_wmatch
238 # define END end_wpattern
239 # define L(CS) L##CS
240 # define BTOWC(C) (C)
241 # define STRLEN(S) __wcslen (S)
242 # define STRCAT(D, S) __wcscat (D, S)
243 # define MEMPCPY(D, S, N) __wmempcpy (D, S, N)
244 # define MEMCHR(S, C, N) wmemchr (S, C, N)
245 # define STRCOLL(S1, S2) wcscoll (S1, S2)
246 # define WIDE_CHAR_VERSION 1
248 # undef IS_CHAR_CLASS
249 /* We have to convert the wide character string in a multibyte string. But
250 we know that the character class names consist of alphanumeric characters
251 from the portable character set, and since the wide character encoding
252 for a member of the portable character set is the same code point as
253 its single-byte encoding, we can use a simplified method to convert the
254 string to a multibyte character string. */
255 static wctype_t
256 is_char_class (const wchar_t *wcs)
258 char s[CHAR_CLASS_MAX_LENGTH + 1];
259 char *cp = s;
263 /* Test for a printable character from the portable character set. */
264 # ifdef _LIBC
265 if (*wcs < 0x20 || *wcs > 0x7e
266 || *wcs == 0x24 || *wcs == 0x40 || *wcs == 0x60)
267 return (wctype_t) 0;
268 # else
269 switch (*wcs)
271 case L' ': case L'!': case L'"': case L'#': case L'%':
272 case L'&': case L'\'': case L'(': case L')': case L'*':
273 case L'+': case L',': case L'-': case L'.': case L'/':
274 case L'0': case L'1': case L'2': case L'3': case L'4':
275 case L'5': case L'6': case L'7': case L'8': case L'9':
276 case L':': case L';': case L'<': case L'=': case L'>':
277 case L'?':
278 case L'A': case L'B': case L'C': case L'D': case L'E':
279 case L'F': case L'G': case L'H': case L'I': case L'J':
280 case L'K': case L'L': case L'M': case L'N': case L'O':
281 case L'P': case L'Q': case L'R': case L'S': case L'T':
282 case L'U': case L'V': case L'W': case L'X': case L'Y':
283 case L'Z':
284 case L'[': case L'\\': case L']': case L'^': case L'_':
285 case L'a': case L'b': case L'c': case L'd': case L'e':
286 case L'f': case L'g': case L'h': case L'i': case L'j':
287 case L'k': case L'l': case L'm': case L'n': case L'o':
288 case L'p': case L'q': case L'r': case L's': case L't':
289 case L'u': case L'v': case L'w': case L'x': case L'y':
290 case L'z': case L'{': case L'|': case L'}': case L'~':
291 break;
292 default:
293 return (wctype_t) 0;
295 # endif
297 /* Avoid overrunning the buffer. */
298 if (cp == s + CHAR_CLASS_MAX_LENGTH)
299 return (wctype_t) 0;
301 *cp++ = (char) *wcs++;
303 while (*wcs != L'\0');
305 *cp = '\0';
307 # ifdef _LIBC
308 return __wctype (s);
309 # else
310 return wctype (s);
311 # endif
313 # define IS_CHAR_CLASS(string) is_char_class (string)
315 # include "fnmatch_loop.c"
316 # endif
320 fnmatch (pattern, string, flags)
321 const char *pattern;
322 const char *string;
323 int flags;
325 # if HANDLE_MULTIBYTE
326 if (__builtin_expect (MB_CUR_MAX, 1) != 1)
328 mbstate_t ps;
329 size_t n;
330 wchar_t *wpattern;
331 wchar_t *wstring;
333 /* Convert the strings into wide characters. */
334 memset (&ps, '\0', sizeof (ps));
335 n = mbsrtowcs (NULL, &pattern, 0, &ps);
336 if (__builtin_expect (n, 0) == (size_t) -1)
337 /* Something wrong.
338 XXX Do we have to set `errno' to something which mbsrtows hasn't
339 already done? */
340 return -1;
341 wpattern = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
342 assert (mbsinit (&ps));
343 (void) mbsrtowcs (wpattern, &pattern, n + 1, &ps);
345 assert (mbsinit (&ps));
346 n = mbsrtowcs (NULL, &string, 0, &ps);
347 if (__builtin_expect (n, 0) == (size_t) -1)
348 /* Something wrong.
349 XXX Do we have to set `errno' to something which mbsrtows hasn't
350 already done? */
351 return -1;
352 wstring = (wchar_t *) alloca ((n + 1) * sizeof (wchar_t));
353 assert (mbsinit (&ps));
354 (void) mbsrtowcs (wstring, &string, n + 1, &ps);
356 return internal_fnwmatch (wpattern, wstring, wstring + n,
357 flags & FNM_PERIOD, flags);
359 # endif /* mbstate_t and mbsrtowcs or _LIBC. */
361 return internal_fnmatch (pattern, string, string + strlen (string),
362 flags & FNM_PERIOD, flags);
365 # ifdef _LIBC
366 # undef fnmatch
367 versioned_symbol (libc, __fnmatch, fnmatch, GLIBC_2_2_3);
368 # if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_3)
369 strong_alias (__fnmatch, __fnmatch_old)
370 compat_symbol (libc, __fnmatch_old, fnmatch, GLIBC_2_0);
371 # endif
372 libc_hidden_ver (__fnmatch, fnmatch)
373 # endif
375 #endif /* _LIBC or not __GNU_LIBRARY__. */