1 /* Copyright (C) 1991, 92, 93, 96, 97, 98, 99 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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. */
23 /* Enable GNU extensions in fnmatch.h. */
25 # define _GNU_SOURCE 1
32 #if HAVE_STRING_H || defined _LIBC
38 #if defined STDC_HEADERS || defined _LIBC
42 /* For platforms which support the ISO C amendment 1 functionality we
43 support user defined character classes. */
44 #if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
45 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
50 /* Comment out all this code if we are using the GNU C Library, and are not
51 actually compiling the library itself. This code is part of the GNU C
52 Library, but also included in many other GNU distributions. Compiling
53 and linking in this code is a waste when using the GNU C library
54 (especially if it is a shared library). Rather than having every GNU
55 program understand `configure --with-gnu-libc' and omit the object files,
56 it is simpler to just do this in the source for each such file. */
58 #if defined NO_FNMATCH || defined NO_FNMATCH_CASEFOLD || \
59 defined _LIBC || !defined __GNU_LIBRARY__
62 # if defined STDC_HEADERS || !defined isascii
65 # define ISASCII(c) isascii(c)
69 # define ISBLANK(c) (ISASCII (c) && isblank (c))
71 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
74 # define ISGRAPH(c) (ISASCII (c) && isgraph (c))
76 # define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
79 # define ISPRINT(c) (ISASCII (c) && isprint (c))
80 # define ISDIGIT(c) (ISASCII (c) && isdigit (c))
81 # define ISALNUM(c) (ISASCII (c) && isalnum (c))
82 # define ISALPHA(c) (ISASCII (c) && isalpha (c))
83 # define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
84 # define ISLOWER(c) (ISASCII (c) && islower (c))
85 # define ISPUNCT(c) (ISASCII (c) && ispunct (c))
86 # define ISSPACE(c) (ISASCII (c) && isspace (c))
87 # define ISUPPER(c) (ISASCII (c) && isupper (c))
88 # define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
90 # define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
92 # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
93 /* The GNU C library provides support for user-defined character classes
94 and the functions from ISO C amendment 1. */
95 # ifdef CHARCLASS_NAME_MAX
96 # define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
98 /* This shouldn't happen but some implementation might still have this
99 problem. Use a reasonable default value. */
100 # define CHAR_CLASS_MAX_LENGTH 256
104 # define IS_CHAR_CLASS(string) __wctype (string)
106 # define IS_CHAR_CLASS(string) wctype (string)
109 # define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
111 # define IS_CHAR_CLASS(string) \
112 (STREQ (string, "alpha") || STREQ (string, "upper") \
113 || STREQ (string, "lower") || STREQ (string, "digit") \
114 || STREQ (string, "alnum") || STREQ (string, "xdigit") \
115 || STREQ (string, "space") || STREQ (string, "print") \
116 || STREQ (string, "punct") || STREQ (string, "graph") \
117 || STREQ (string, "cntrl") || STREQ (string, "blank"))
120 /* Avoid depending on library functions or files
121 whose names are inconsistent. */
123 # if !defined _LIBC && !defined getenv
124 extern char *getenv ();
135 /* This function doesn't exist on most systems. */
137 # if !defined HAVE___STRCHRNUL && !defined _LIBC
139 __strchrnul (const char *s, int c)
143 char *result = strchr (s, c);
145 result = strchr (s, '\0');
150 # ifndef internal_function
151 /* Inside GNU libc we mark some function in a special way. In other
152 environments simply ignore the marking. */
153 # define internal_function
156 /* Match STRING against the filename pattern PATTERN, returning zero if
157 it matches, nonzero if not. */
158 static int internal_fnmatch __P ((const char *pattern, const char *string,
159 int no_leading_period, int flags))
163 internal_fnmatch (const char *pattern, const char *string, int no_leading_period, int flags)
169 register const char *p = pattern, *n = string;
170 register unsigned char c;
172 /* Note that this evaluates C many times. */
174 # define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
176 # define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
179 while ((c = *p++) != '\0')
188 else if (*n == '/' && (flags & FNM_FILE_NAME))
190 else if (*n == '.' && no_leading_period
192 || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
197 if (!(flags & FNM_NOESCAPE))
201 /* Trailing \ loses. */
205 if (FOLD ((unsigned char) *n) != c)
210 if (*n == '.' && no_leading_period
212 || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
215 for (c = *p++; c == '?' || c == '*'; c = *p++)
217 if (*n == '/' && (flags & FNM_FILE_NAME))
218 /* A slash does not match a wildcard under FNM_FILE_NAME. */
222 /* A ? needs to match one character. */
224 /* There isn't another character; no match. */
227 /* One character of the string is consumed in matching
228 this ? wildcard, so *??? won't match if there are
229 less than three characters. */
235 /* The wildcard(s) is/are the last element of the pattern.
236 If the name is a file name and contains another slash
237 this does mean it cannot match. */
238 return ((flags & FNM_FILE_NAME) && strchr (n, '/') != NULL
244 endp = __strchrnul (n, (flags & FNM_FILE_NAME) ? '/' : '\0');
248 int flags2 = ((flags & FNM_FILE_NAME)
249 ? flags : (flags & ~FNM_PERIOD));
251 for (--p; n < endp; ++n)
252 if (internal_fnmatch (p, n,
262 else if (c == '/' && (flags & FNM_FILE_NAME))
264 while (*n != '\0' && *n != '/')
267 && (internal_fnmatch (p, n + 1, flags & FNM_PERIOD,
273 int flags2 = ((flags & FNM_FILE_NAME)
274 ? flags : (flags & ~FNM_PERIOD));
276 if (c == '\\' && !(flags & FNM_NOESCAPE))
279 for (--p; n < endp; ++n)
280 if (FOLD ((unsigned char) *n) == c
281 && (internal_fnmatch (p, n,
292 /* If we come here no match is possible with the wildcard. */
297 /* Nonzero if the sense of the character class is inverted. */
298 static int posixly_correct;
302 if (posixly_correct == 0)
303 posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
308 if (*n == '.' && no_leading_period && (n == string
314 if (*n == '/' && (flags & FNM_FILE_NAME))
315 /* `/' cannot be matched. */
318 not = (*p == '!' || (posixly_correct < 0 && *p == '^'));
325 unsigned char fn = FOLD ((unsigned char) *n);
327 if (!(flags & FNM_NOESCAPE) && c == '\\')
331 c = FOLD ((unsigned char) *p);
337 else if (c == '[' && *p == ':')
339 /* Leave room for the null. */
340 char str[CHAR_CLASS_MAX_LENGTH + 1];
342 # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
345 const char *startp = p;
349 if (c1 > CHAR_CLASS_MAX_LENGTH)
350 /* The name is too long and therefore the pattern
355 if (c == ':' && p[1] == ']')
360 if (c < 'a' || c >= 'z')
362 /* This cannot possibly be a character class name.
363 Match it as a normal range. */
372 # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
373 wt = IS_CHAR_CLASS (str);
375 /* Invalid character class name. */
378 if (__iswctype (__btowc ((unsigned char) *n), wt))
381 if ((STREQ (str, "alnum") && ISALNUM ((unsigned char) *n))
382 || (STREQ (str, "alpha") && ISALPHA ((unsigned char) *n))
383 || (STREQ (str, "blank") && ISBLANK ((unsigned char) *n))
384 || (STREQ (str, "cntrl") && ISCNTRL ((unsigned char) *n))
385 || (STREQ (str, "digit") && ISDIGIT ((unsigned char) *n))
386 || (STREQ (str, "graph") && ISGRAPH ((unsigned char) *n))
387 || (STREQ (str, "lower") && ISLOWER ((unsigned char) *n))
388 || (STREQ (str, "print") && ISPRINT ((unsigned char) *n))
389 || (STREQ (str, "punct") && ISPUNCT ((unsigned char) *n))
390 || (STREQ (str, "space") && ISSPACE ((unsigned char) *n))
391 || (STREQ (str, "upper") && ISUPPER ((unsigned char) *n))
392 || (STREQ (str, "xdigit") && ISXDIGIT ((unsigned char) *n)))
397 /* [ (unterminated) loses. */
408 if (c == '-' && *p != ']')
411 unsigned char cend = *p++;
412 if (!(flags & FNM_NOESCAPE) && cend == '\\')
417 if (cold <= fn && fn <= FOLD (cend))
433 /* Skip the rest of the [...] that already matched. */
437 /* [... (unterminated) loses. */
441 if (!(flags & FNM_NOESCAPE) && c == '\\')
445 /* XXX 1003.2d11 is unclear if this is right. */
448 else if (c == '[' && *p == ':')
453 while (*p != ':' || p[1] == ']');
464 if (c != FOLD ((unsigned char) *n))
474 if ((flags & FNM_LEADING_DIR) && *n == '/')
475 /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */
485 fnmatch (const char *pattern, const char *string, int flags)
490 return internal_fnmatch (pattern, string, flags & FNM_PERIOD, flags);
493 #endif /* _LIBC or not __GNU_LIBRARY__. */