182 lines
4.0 KiB
C
182 lines
4.0 KiB
C
/* Copyright (C) 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C 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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The GNU C 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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/* Modified slightly by Brian Berliner <berliner@sun.com> and
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Jim Blandy <jimb@cyclic.com> for CVS use */
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "system.h"
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/* IGNORE(@ */
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/* #include <ansidecl.h> */
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/* @) */
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#include <errno.h>
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#include "fnmatch.h"
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#if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS)
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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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#if __STDC__
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fnmatch (const char *pattern, const char *string, int flags)
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#else
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fnmatch (pattern, string, flags)
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char *pattern;
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char *string;
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int flags;
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#endif
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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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if ((flags & ~__FNM_FLAGS) != 0)
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{
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errno = EINVAL;
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return -1;
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}
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while ((c = *p++) != '\0')
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{
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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_PATHNAME) && *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_PATHNAME) && 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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c = *p++;
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if (FOLD_FN_CHAR (*n) != FOLD_FN_CHAR (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_PATHNAME) && n[-1] == '/')))
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return FNM_NOMATCH;
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for (c = *p++; c == '?' || c == '*'; c = *p++, ++n)
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if (((flags & FNM_PATHNAME) && *n == '/') ||
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(c == '?' && *n == '\0'))
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return FNM_NOMATCH;
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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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for (--p; *n != '\0'; ++n)
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if ((c == '[' || FOLD_FN_CHAR (*n) == FOLD_FN_CHAR (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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register int not;
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if (*n == '\0')
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return FNM_NOMATCH;
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if ((flags & FNM_PERIOD) && *n == '.' &&
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(n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
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return FNM_NOMATCH;
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not = (*p == '!' || *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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register char cstart = c, cend = c;
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if (!(flags & FNM_NOESCAPE) && c == '\\')
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cstart = cend = *p++;
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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_PATHNAME) && c == '/')
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/* [/] can never match. */
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return FNM_NOMATCH;
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if (c == '-' && *p != ']')
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{
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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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c = *p++;
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}
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if (*n >= cstart && *n <= cend)
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goto matched;
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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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/* 1003.2d11 is unclear if this is right. %%% */
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++p;
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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 (FOLD_FN_CHAR (c) != FOLD_FN_CHAR (*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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return FNM_NOMATCH;
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}
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