386 lines
9.9 KiB
C
386 lines
9.9 KiB
C
/* Copyright (C) 1991, 92, 93, 96, 97, 98 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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/* Enable GNU extensions in fnmatch.h. */
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE 1
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#endif
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#include <errno.h>
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#include <fnmatch.h>
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#include <gctype.h>
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#if HAVE_STRING_H
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# include <string.h>
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#else
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# include <strings.h>
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#endif
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#if defined STDC_HEADERS || defined _LIBC
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# include <stdlib.h>
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#endif
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/* For platform which support the ISO C amendement 1 functionality we
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support user defined character classes. */
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#if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
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/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
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# include <wchar.h>
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# include <wctype.h>
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#endif
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/* Comment out all this code if we are using the GNU C Library, and are not
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actually compiling the library itself. This code is part of the GNU C
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Library, but also included in many other GNU distributions. Compiling
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and linking in this code is a waste when using the GNU C library
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(especially if it is a shared library). Rather than having every GNU
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program understand `configure --with-gnu-libc' and omit the object files,
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it is simpler to just do this in the source for each such file. */
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#if defined _LIBC || !defined __GNU_LIBRARY__
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# if defined STDC_HEADERS || !defined isascii
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# define ISASCII(c) 1
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# else
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# define ISASCII(c) isascii(c)
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# endif
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#ifdef isblank
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# define ISBLANK(c) (ISASCII (c) && isblank (c))
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#else
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# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
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#endif
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#ifdef isgraph
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# define ISGRAPH(c) (ISASCII (c) && isgraph (c))
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#else
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# define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
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#endif
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#define ISPRINT(c) (ISASCII (c) && isprint (c))
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#define ISDIGIT(c) (ISASCII (c) && isdigit (c))
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#define ISALNUM(c) (ISASCII (c) && isalnum (c))
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#define ISALPHA(c) (ISASCII (c) && isalpha (c))
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#define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
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#define ISLOWER(c) (ISASCII (c) && islower (c))
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#define ISPUNCT(c) (ISASCII (c) && ispunct (c))
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#define ISSPACE(c) (ISASCII (c) && isspace (c))
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#define ISUPPER(c) (ISASCII (c) && isupper (c))
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#define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
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# define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
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# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
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/* The GNU C library provides support for user-defined character classes
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and the functions from ISO C amendement 1. */
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# ifdef CHARCLASS_NAME_MAX
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# define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
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# else
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/* This shouldn't happen but some implementation might still have this
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problem. Use a reasonable default value. */
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# define CHAR_CLASS_MAX_LENGTH 256
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# endif
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# ifdef _LIBC
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# define IS_CHAR_CLASS(string) __wctype (string)
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# else
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# define IS_CHAR_CLASS(string) wctype (string)
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# endif
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# else
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# define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
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# define IS_CHAR_CLASS(string) \
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(STREQ (string, "alpha") || STREQ (string, "upper") \
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|| STREQ (string, "lower") || STREQ (string, "digit") \
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|| STREQ (string, "alnum") || STREQ (string, "xdigit") \
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|| STREQ (string, "space") || STREQ (string, "print") \
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|| STREQ (string, "punct") || STREQ (string, "graph") \
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|| STREQ (string, "cntrl") || STREQ (string, "blank"))
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# endif
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/* Avoid depending on library functions or files
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whose names are inconsistent. */
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# if !defined _LIBC && !defined getenv
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extern char *getenv ();
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# endif
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# ifndef errno
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extern int errno;
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# endif
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/* Match STRING against the filename pattern PATTERN, returning zero if
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it matches, nonzero if not. */
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int
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fnmatch (pattern, string, flags)
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const char *pattern;
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const char *string;
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int flags;
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{
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register const char *p = pattern, *n = string;
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register char c;
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/* Note that this evaluates C many times. */
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# ifdef _LIBC
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# define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
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# else
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# define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
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# endif
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while ((c = *p++) != '\0')
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{
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c = FOLD (c);
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switch (c)
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{
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case '?':
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if (*n == '\0')
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return FNM_NOMATCH;
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else if ((flags & FNM_FILE_NAME) && *n == '/')
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return FNM_NOMATCH;
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else if ((flags & FNM_PERIOD) && *n == '.' &&
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(n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
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return FNM_NOMATCH;
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break;
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case '\\':
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if (!(flags & FNM_NOESCAPE))
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{
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c = *p++;
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if (c == '\0')
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/* Trailing \ loses. */
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return FNM_NOMATCH;
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c = FOLD (c);
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}
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if (FOLD (*n) != c)
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return FNM_NOMATCH;
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break;
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case '*':
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if ((flags & FNM_PERIOD) && *n == '.' &&
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(n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
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return FNM_NOMATCH;
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for (c = *p++; c == '?' || c == '*'; c = *p++)
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{
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if ((flags & FNM_FILE_NAME) && *n == '/')
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/* A slash does not match a wildcard under FNM_FILE_NAME. */
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return FNM_NOMATCH;
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else if (c == '?')
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{
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/* A ? needs to match one character. */
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if (*n == '\0')
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/* There isn't another character; no match. */
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return FNM_NOMATCH;
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else
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/* One character of the string is consumed in matching
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this ? wildcard, so *??? won't match if there are
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less than three characters. */
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++n;
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}
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}
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if (c == '\0')
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return 0;
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{
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char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c;
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c1 = FOLD (c1);
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for (--p; *n != '\0'; ++n)
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if ((c == '[' || FOLD (*n) == c1) &&
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fnmatch (p, n, flags & ~FNM_PERIOD) == 0)
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return 0;
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return FNM_NOMATCH;
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}
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case '[':
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{
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/* Nonzero if the sense of the character class is inverted. */
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static int posixly_correct;
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register int not;
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char cold;
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if (posixly_correct == 0)
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posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
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if (*n == '\0')
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return FNM_NOMATCH;
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if (*n == '.' && (flags & FNM_PERIOD) &&
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(n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
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return FNM_NOMATCH;
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if (*n == '/' && (flags & FNM_FILE_NAME))
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/* `/' cannot be matched. */
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return FNM_NOMATCH;
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not = (*p == '!' || (posixly_correct < 0 && *p == '^'));
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if (not)
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++p;
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c = *p++;
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for (;;)
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{
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int fn = FOLD (*n);
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if (!(flags & FNM_NOESCAPE) && c == '\\')
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{
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if (*p == '\0')
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return FNM_NOMATCH;
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c = FOLD (*p++);
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if (c == fn)
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goto matched;
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}
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else if (c == '[' && *p == ':')
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{
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/* Leave room for the null. */
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char str[CHAR_CLASS_MAX_LENGTH + 1];
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size_t c1 = 0;
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# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
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wctype_t wt;
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# endif
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for (;;)
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{
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if (c1 == CHAR_CLASS_MAX_LENGTH)
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/* The name is too long and therefore the pattern
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is ill-formed. */
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return FNM_NOMATCH;
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c = *++p;
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if (c == ':' && p[1] == ']')
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{
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p += 2;
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break;
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}
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str[c1++] = 'c';
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}
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str[c1] = '\0';
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# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
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wt = IS_CHAR_CLASS (str);
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if (wt == 0)
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/* Invalid character class name. */
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return FNM_NOMATCH;
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if (__iswctype (__btowc (*n), wt))
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goto matched;
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# else
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if ((STREQ (str, "alnum") && ISALNUM (*n))
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|| (STREQ (str, "alpha") && ISALPHA (*n))
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|| (STREQ (str, "blank") && ISBLANK (*n))
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|| (STREQ (str, "cntrl") && ISCNTRL (*n))
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|| (STREQ (str, "digit") && ISDIGIT (*n))
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|| (STREQ (str, "graph") && ISGRAPH (*n))
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|| (STREQ (str, "lower") && ISLOWER (*n))
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|| (STREQ (str, "print") && ISPRINT (*n))
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|| (STREQ (str, "punct") && ISPUNCT (*n))
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|| (STREQ (str, "space") && ISSPACE (*n))
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|| (STREQ (str, "upper") && ISUPPER (*n))
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|| (STREQ (str, "xdigit") && ISXDIGIT (*n)))
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goto matched;
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# endif
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}
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else if (c == '\0')
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/* [ (unterminated) loses. */
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return FNM_NOMATCH;
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else if (FOLD (c) == fn)
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goto matched;
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cold = c;
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c = *p++;
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if (c == '-' && *p != ']')
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{
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/* It is a range. */
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char cend = *p++;
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if (!(flags & FNM_NOESCAPE) && cend == '\\')
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cend = *p++;
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if (cend == '\0')
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return FNM_NOMATCH;
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if (cold <= fn && fn <= FOLD (cend))
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goto matched;
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c = *p++;
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}
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if (c == ']')
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break;
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}
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if (!not)
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return FNM_NOMATCH;
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break;
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matched:
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/* Skip the rest of the [...] that already matched. */
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while (c != ']')
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{
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if (c == '\0')
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/* [... (unterminated) loses. */
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return FNM_NOMATCH;
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c = *p++;
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if (!(flags & FNM_NOESCAPE) && c == '\\')
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{
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if (*p == '\0')
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return FNM_NOMATCH;
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/* XXX 1003.2d11 is unclear if this is right. */
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++p;
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}
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else if (c == '[' && *p == ':')
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{
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do
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if (*++p == '\0')
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return FNM_NOMATCH;
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while (*p != ':' || p[1] == ']');
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p += 2;
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c = *p;
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}
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}
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if (not)
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return FNM_NOMATCH;
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}
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break;
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default:
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if (c != FOLD (*n))
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return FNM_NOMATCH;
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}
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++n;
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}
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if (*n == '\0')
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return 0;
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if ((flags & FNM_LEADING_DIR) && *n == '/')
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/* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */
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return 0;
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return FNM_NOMATCH;
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# undef FOLD
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}
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#endif /* _LIBC or not __GNU_LIBRARY__. */
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