fnmatch.c
上传用户:xiejiait
上传日期:2007-01-06
资源大小:881k
文件大小:6k
- /* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
- NOTE: The canonical source of this file is maintained with the GNU C Library.
- Bugs can be reported to bug-glibc@prep.ai.mit.edu.
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
- static char rcsid[] ="$Id: fnmatch.c,v 1.4 1999/03/02 03:41:25 eric Exp $";
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
- #include <errno.h>
- #include <fnmatch.h>
- #ifndef __STDC__
- #define const
- #endif
- #ifndef FNM_FILE_NAME
- #define FNM_FILE_NAME FNM_PATHNAME /* Preferred GNU name. */
- #endif
- #ifndef FNM_LEADING_DIR
- #define FNM_LEADING_DIR (1 << 3) /* Ignore `/...' after a match. */
- #endif
- #ifndef FNM_CASEFOLD
- #define FNM_CASEFOLD (1 << 4) /* Compare without regard to case. */
- #endif
- #include <ctype.h>
- #if defined (STDC_HEADERS) || !defined (isascii)
- #define ISASCII(c) 1
- #else
- #define ISASCII(c) isascii(c)
- #endif
- #define ISUPPER(c) (ISASCII (c) && isupper (c))
- /* Comment out all this code if we are using the GNU C Library, and are not
- actually compiling the library itself. This code is part of the GNU C
- Library, but also included in many other GNU distributions. Compiling
- and linking in this code is a waste when using the GNU C library
- (especially if it is a shared library). Rather than having every GNU
- program understand `configure --with-gnu-libc' and omit the object files,
- it is simpler to just do this in the source for each such file. */
- #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
- #if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS)
- extern int errno;
- #endif
- /* Match STRING against the filename pattern PATTERN, returning zero if
- it matches, nonzero if not. */
- int
- fnmatch (pattern, string, flags)
- const char *pattern;
- const char *string;
- int flags;
- {
- register const char *p = pattern, *n = string;
- register char c;
- /* Note that this evalutes C many times. */
- #define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
- while ((c = *p++) != ' ')
- {
- c = FOLD ((unsigned char)c);
- switch (c)
- {
- case '?':
- if (*n == ' ')
- return FNM_NOMATCH;
- else if ((flags & FNM_FILE_NAME) && *n == '/')
- return FNM_NOMATCH;
- else if ((flags & FNM_PERIOD) && *n == '.' &&
- (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
- return FNM_NOMATCH;
- break;
- case '\':
- if (!(flags & FNM_NOESCAPE))
- {
- c = *p++;
- c = FOLD ((unsigned char )c);
- }
- if (FOLD ((unsigned char )*n) != c)
- return FNM_NOMATCH;
- break;
- case '*':
- if ((flags & FNM_PERIOD) && *n == '.' &&
- (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
- return FNM_NOMATCH;
- for (c = *p++; c == '?' || c == '*'; c = *p++, ++n)
- if (((flags & FNM_FILE_NAME) && *n == '/') ||
- (c == '?' && *n == ' '))
- return FNM_NOMATCH;
- if (c == ' ')
- return 0;
- {
- char c1 = (!(flags & FNM_NOESCAPE) && c == '\') ? *p : c;
- c1 = FOLD ((unsigned char )c1);
- for (--p; *n != ' '; ++n)
- if ((c == '[' || FOLD ((unsigned char )*n) == c1) &&
- fnmatch (p, n, flags & ~FNM_PERIOD) == 0)
- return 0;
- return FNM_NOMATCH;
- }
- case '[':
- {
- /* Nonzero if the sense of the character class is inverted. */
- register int not;
- if (*n == ' ')
- return FNM_NOMATCH;
- if ((flags & FNM_PERIOD) && *n == '.' &&
- (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
- return FNM_NOMATCH;
- not = (*p == '!' || *p == '^');
- if (not)
- ++p;
- c = *p++;
- for (;;)
- {
- register char cstart = c, cend = c;
- if (!(flags & FNM_NOESCAPE) && c == '\')
- cstart = cend = *p++;
- cstart = cend = FOLD ((unsigned char)cstart);
- if (c == ' ')
- /* [ (unterminated) loses. */
- return FNM_NOMATCH;
- c = *p++;
- c = FOLD ((unsigned char)c);
- if ((flags & FNM_FILE_NAME) && c == '/')
- /* [/] can never match. */
- return FNM_NOMATCH;
- if (c == '-' && *p != ']')
- {
- cend = *p++;
- if (!(flags & FNM_NOESCAPE) && cend == '\')
- cend = *p++;
- if (cend == ' ')
- return FNM_NOMATCH;
- cend = FOLD ((unsigned char)cend);
- c = *p++;
- }
- if (FOLD ((unsigned char)*n) >= cstart && FOLD ((unsigned char)*n) <= cend)
- goto matched;
- if (c == ']')
- break;
- }
- if (!not)
- return FNM_NOMATCH;
- break;
- matched:;
- /* Skip the rest of the [...] that already matched. */
- while (c != ']')
- {
- if (c == ' ')
- /* [... (unterminated) loses. */
- return FNM_NOMATCH;
- c = *p++;
- if (!(flags & FNM_NOESCAPE) && c == '\')
- /* XXX 1003.2d11 is unclear if this is right. */
- ++p;
- }
- if (not)
- return FNM_NOMATCH;
- }
- break;
- default:
- if (c != FOLD ((unsigned char)*n))
- return FNM_NOMATCH;
- }
- ++n;
- }
- if (*n == ' ')
- return 0;
- if ((flags & FNM_LEADING_DIR) && *n == '/')
- /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */
- return 0;
- return FNM_NOMATCH;
- }
- #endif /* _LIBC or not __GNU_LIBRARY__. */