1 /* Copyright (C) 1991-1993, 1996-2007, 2009-2020 Free Software Foundation, Inc.
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; either version 2, or (at your option)
8 This program 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
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, see <https://www.gnu.org/licenses/>. */
20 /* Enable GNU extensions in fnmatch.h. */
22 # define _GNU_SOURCE 1
36 #define WIDE_CHAR_SUPPORT \
37 (HAVE_WCTYPE_H && HAVE_BTOWC && HAVE_ISWCTYPE \
38 && HAVE_WMEMCHR && (HAVE_WMEMCPY || HAVE_WMEMPCPY))
40 /* For platform which support the ISO C amendment 1 functionality we
41 support user defined character classes. */
42 #if defined _LIBC || WIDE_CHAR_SUPPORT
47 /* We need some of the locale data (the collation sequence information)
48 but there is no interface to get this information in general. Therefore
49 we support a correct implementation only in glibc. */
51 # include "../locale/localeinfo.h"
52 # include "../locale/elem-hash.h"
53 # include "../locale/coll-lookup.h"
54 # include <shlib-compat.h>
56 # define CONCAT(a,b) __CONCAT(a,b)
57 # define mbsrtowcs __mbsrtowcs
58 # define fnmatch __fnmatch
59 extern int fnmatch (const char *pattern
, const char *string
, int flags
);
63 # define SIZE_MAX ((size_t) -1)
66 #include "flexmember.h"
70 # define FALLTHROUGH ((void) 0)
72 # define FALLTHROUGH __attribute__ ((__fallthrough__))
76 /* We often have to test for FNM_FILE_NAME and FNM_PERIOD being both set. */
77 #define NO_LEADING_PERIOD(flags) \
78 ((flags & (FNM_FILE_NAME | FNM_PERIOD)) == (FNM_FILE_NAME | FNM_PERIOD))
80 /* Comment out all this code if we are using the GNU C Library, and are not
81 actually compiling the library itself, and have not detected a bug
82 in the library. This code is part of the GNU C
83 Library, but also included in many other GNU distributions. Compiling
84 and linking in this code is a waste when using the GNU C library
85 (especially if it is a shared library). Rather than having every GNU
86 program understand 'configure --with-gnu-libc' and omit the object files,
87 it is simpler to just do this in the source for each such file. */
89 #if defined _LIBC || !defined __GNU_LIBRARY__ || !HAVE_FNMATCH_GNU
92 # if ! (defined isblank || (HAVE_ISBLANK && HAVE_DECL_ISBLANK))
93 # define isblank(c) ((c) == ' ' || (c) == '\t')
96 # define STREQ(s1, s2) (strcmp (s1, s2) == 0)
98 # if defined _LIBC || WIDE_CHAR_SUPPORT
99 /* The GNU C library provides support for user-defined character classes
100 and the functions from ISO C amendment 1. */
101 # ifdef CHARCLASS_NAME_MAX
102 # define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
104 /* This shouldn't happen but some implementation might still have this
105 problem. Use a reasonable default value. */
106 # define CHAR_CLASS_MAX_LENGTH 256
110 # define IS_CHAR_CLASS(string) __wctype (string)
112 # define IS_CHAR_CLASS(string) wctype (string)
116 # define ISWCTYPE(WC, WT) __iswctype (WC, WT)
118 # define ISWCTYPE(WC, WT) iswctype (WC, WT)
121 # if (HAVE_MBSTATE_T && HAVE_MBSRTOWCS) || _LIBC
122 /* In this case we are implementing the multibyte character handling. */
123 # define HANDLE_MULTIBYTE 1
127 # define CHAR_CLASS_MAX_LENGTH 6 /* Namely, 'xdigit'. */
129 # define IS_CHAR_CLASS(string) \
130 (STREQ (string, "alpha") || STREQ (string, "upper") \
131 || STREQ (string, "lower") || STREQ (string, "digit") \
132 || STREQ (string, "alnum") || STREQ (string, "xdigit") \
133 || STREQ (string, "space") || STREQ (string, "print") \
134 || STREQ (string, "punct") || STREQ (string, "graph") \
135 || STREQ (string, "cntrl") || STREQ (string, "blank"))
138 /* Avoid depending on library functions or files
139 whose names are inconsistent. */
141 /* Global variable. */
142 static int posixly_correct
;
144 # ifndef internal_function
145 /* Inside GNU libc we mark some function in a special way. In other
146 environments simply ignore the marking. */
147 # define internal_function
150 /* Note that this evaluates C many times. */
151 # define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
153 # define UCHAR unsigned char
155 # define FCT internal_fnmatch
156 # define EXT ext_match
157 # define END end_pattern
160 # define BTOWC(C) __btowc (C)
162 # define BTOWC(C) btowc (C)
164 # define STRLEN(S) strlen (S)
165 # define STRCAT(D, S) strcat (D, S)
167 # define MEMPCPY(D, S, N) __mempcpy (D, S, N)
170 # define MEMPCPY(D, S, N) mempcpy (D, S, N)
172 # define MEMPCPY(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))
175 # define MEMCHR(S, C, N) memchr (S, C, N)
176 # include "fnmatch_loop.c"
179 # if HANDLE_MULTIBYTE
180 # define FOLD(c) ((flags & FNM_CASEFOLD) ? towlower (c) : (c))
181 # define CHAR wchar_t
182 # define UCHAR wint_t
184 # define FCT internal_fnwmatch
185 # define EXT ext_wmatch
186 # define END end_wpattern
187 # define L_(CS) L##CS
188 # define BTOWC(C) (C)
190 # define STRLEN(S) __wcslen (S)
191 # define STRCAT(D, S) __wcscat (D, S)
192 # define MEMPCPY(D, S, N) __wmempcpy (D, S, N)
194 # define STRLEN(S) wcslen (S)
195 # define STRCAT(D, S) wcscat (D, S)
197 # define MEMPCPY(D, S, N) wmempcpy (D, S, N)
199 # define MEMPCPY(D, S, N) (wmemcpy (D, S, N) + (N))
202 # define MEMCHR(S, C, N) wmemchr (S, C, N)
203 # define WIDE_CHAR_VERSION 1
205 # undef IS_CHAR_CLASS
206 /* We have to convert the wide character string in a multibyte string. But
207 we know that the character class names consist of alphanumeric characters
208 from the portable character set, and since the wide character encoding
209 for a member of the portable character set is the same code point as
210 its single-byte encoding, we can use a simplified method to convert the
211 string to a multibyte character string. */
213 is_char_class (const wchar_t *wcs
)
215 char s
[CHAR_CLASS_MAX_LENGTH
+ 1];
220 /* Test for a printable character from the portable character set. */
222 if (*wcs
< 0x20 || *wcs
> 0x7e
223 || *wcs
== 0x24 || *wcs
== 0x40 || *wcs
== 0x60)
228 case L
' ': case L
'!': case L
'"': case L
'#': case L
'%':
229 case L
'&': case L
'\'': case L
'(': case L
')': case L
'*':
230 case L
'+': case L
',': case L
'-': case L
'.': case L
'/':
231 case L
'0': case L
'1': case L
'2': case L
'3': case L
'4':
232 case L
'5': case L
'6': case L
'7': case L
'8': case L
'9':
233 case L
':': case L
';': case L
'<': case L
'=': case L
'>':
235 case L
'A': case L
'B': case L
'C': case L
'D': case L
'E':
236 case L
'F': case L
'G': case L
'H': case L
'I': case L
'J':
237 case L
'K': case L
'L': case L
'M': case L
'N': case L
'O':
238 case L
'P': case L
'Q': case L
'R': case L
'S': case L
'T':
239 case L
'U': case L
'V': case L
'W': case L
'X': case L
'Y':
241 case L
'[': case L
'\\': case L
']': case L
'^': case L
'_':
242 case L
'a': case L
'b': case L
'c': case L
'd': case L
'e':
243 case L
'f': case L
'g': case L
'h': case L
'i': case L
'j':
244 case L
'k': case L
'l': case L
'm': case L
'n': case L
'o':
245 case L
'p': case L
'q': case L
'r': case L
's': case L
't':
246 case L
'u': case L
'v': case L
'w': case L
'x': case L
'y':
247 case L
'z': case L
'{': case L
'|': case L
'}': case L
'~':
254 /* Avoid overrunning the buffer. */
255 if (cp
== s
+ CHAR_CLASS_MAX_LENGTH
)
258 *cp
++ = (char) *wcs
++;
260 while (*wcs
!= L
'\0');
270 # define IS_CHAR_CLASS(string) is_char_class (string)
272 # include "fnmatch_loop.c"
277 fnmatch (const char *pattern
, const char *string
, int flags
)
279 # if HANDLE_MULTIBYTE
280 # define ALLOCA_LIMIT 2000
281 if (__builtin_expect (MB_CUR_MAX
, 1) != 1)
291 /* Calculate the size needed to convert the strings to
293 memset (&ps
, '\0', sizeof (ps
));
294 patsize
= mbsrtowcs (NULL
, &pattern
, 0, &ps
) + 1;
295 if (__builtin_expect (patsize
!= 0, 1))
297 assert (mbsinit (&ps
));
298 strsize
= mbsrtowcs (NULL
, &string
, 0, &ps
) + 1;
299 if (__builtin_expect (strsize
!= 0, 1))
301 assert (mbsinit (&ps
));
302 totsize
= patsize
+ strsize
;
303 if (__builtin_expect (! (patsize
<= totsize
304 && totsize
<= SIZE_MAX
/ sizeof (wchar_t)),
311 /* Allocate room for the wide characters. */
312 if (__builtin_expect (totsize
< ALLOCA_LIMIT
, 1))
313 wpattern
= (wchar_t *) alloca (totsize
* sizeof (wchar_t));
316 wpattern
= malloc (totsize
* sizeof (wchar_t));
317 if (__builtin_expect (! wpattern
, 0))
323 wstring
= wpattern
+ patsize
;
325 /* Convert the strings into wide characters. */
326 mbsrtowcs (wpattern
, &pattern
, patsize
, &ps
);
327 assert (mbsinit (&ps
));
328 mbsrtowcs (wstring
, &string
, strsize
, &ps
);
330 res
= internal_fnwmatch (wpattern
, wstring
, wstring
+ strsize
- 1,
331 flags
& FNM_PERIOD
, flags
);
333 if (__builtin_expect (! (totsize
< ALLOCA_LIMIT
), 0))
340 # endif /* HANDLE_MULTIBYTE */
342 return internal_fnmatch (pattern
, string
, string
+ strlen (string
),
343 flags
& FNM_PERIOD
, flags
);
348 versioned_symbol (libc
, __fnmatch
, fnmatch
, GLIBC_2_2_3
);
349 # if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_3)
350 strong_alias (__fnmatch
, __fnmatch_old
)
351 compat_symbol (libc
, __fnmatch_old
, fnmatch
, GLIBC_2_0
);
353 libc_hidden_ver (__fnmatch
, fnmatch
)
356 #endif /* _LIBC or not __GNU_LIBRARY__. */