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Diffstat (limited to 'missing/fnmatch.c')
| -rw-r--r-- | missing/fnmatch.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/missing/fnmatch.c b/missing/fnmatch.c new file mode 100644 index 0000000000..4cf746118a --- /dev/null +++ b/missing/fnmatch.c @@ -0,0 +1,199 @@ +/* + * Copyright (c) 1989, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Guido van Rossum. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)fnmatch.c 8.2 (Berkeley) 4/16/94"; +#endif /* LIBC_SCCS and not lint */ + +/* + * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6. + * Compares a filename or pathname to a pattern. + */ + +#include "missing/fnmatch.h" +#include <string.h> + +#define EOS '\0' + +static char *rangematch(); + +int +fnmatch(pattern, string, flags) + char *pattern; + char *string; + int flags; +{ + char *stringstart; + char c, test; + + for (stringstart = string;;) { + switch (c = *pattern++) { + case EOS: + return (*string == EOS ? 0 : FNM_NOMATCH); + case '?': + if (*string == EOS) { + return (FNM_NOMATCH); + } + if (*string == '/' && (flags & FNM_PATHNAME)) { + return (FNM_NOMATCH); + } + if (*string == '.' && (flags & FNM_PERIOD) && + (string == stringstart || + ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) { + return (FNM_NOMATCH); + } + ++string; + break; + case '*': + c = *pattern; + /* Collapse multiple stars. */ + while (c == '*') { + c = *++pattern; + } + + if (*string == '.' && (flags & FNM_PERIOD) && + (string == stringstart || + ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) { + return (FNM_NOMATCH); + } + + /* Optimize for pattern with * at end or before /. */ + if (c == EOS) { + if (flags & FNM_PATHNAME) { + return (strchr(string, '/') == NULL ? 0 : FNM_NOMATCH); + } + else { + return (0); + } + } + else if (c == '/' && flags & FNM_PATHNAME) { + if ((string = strchr(string, '/')) == NULL) { + return (FNM_NOMATCH); + } + break; + } + + /* General case, use recursion. */ + while ((test = *string) != EOS) { + if (!fnmatch(pattern, string, flags & ~FNM_PERIOD)) { + return (0); + } + if (test == '/' && flags & FNM_PATHNAME) { + break; + } + ++string; + } + return (FNM_NOMATCH); + case '[': + if (*string == EOS) { + return (FNM_NOMATCH); + } + if (*string == '/' && flags & FNM_PATHNAME) { + return (FNM_NOMATCH); + } + if (*string == '.' && (flags & FNM_PERIOD) && + (string == stringstart || + ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) { + return (FNM_NOMATCH); + } + if ((pattern = rangematch(pattern, *string, flags)) == NULL) { + return (FNM_NOMATCH); + } + ++string; + break; + case '\\': + if (!(flags & FNM_NOESCAPE)) { + if ((c = *pattern++) == EOS) { + c = '\\'; + --pattern; + } + } + /* FALLTHROUGH */ + default: + if (c != *string) { + return (FNM_NOMATCH); + } + string++; + break; + } + /* NOTREACHED */ + } +} + +static char* +rangematch(pattern, test, flags) + char *pattern; + int test, flags; +{ + int negate, ok; + char c, c2; + + /* + * A bracket expression starting with an unquoted circumflex + * character produces unspecified results (IEEE 1003.2-1992, + * 3.13.2). This implementation treats it like '!', for + * consistency with the regular expression syntax. + * J.T. Conklin (conklin@ngai.kaleida.com) + */ + if ((negate = (*pattern == '!' || *pattern == '^'))) { + ++pattern; + } + + for (ok = 0; (c = *pattern++) != ']';) { + if (c == '\\' && !(flags & FNM_NOESCAPE)) { + c = *pattern++; + } + if (c == EOS) { + return (NULL); + } + if (*pattern == '-' && (c2 = *(pattern + 1)) != EOS && c2 != ']') { + pattern += 2; + if (c2 == '\\' && !(flags & FNM_NOESCAPE)) { + c2 = *pattern++; + } + if (c2 == EOS) { + return (NULL); + } + if (c <= test && test <= c2) { + ok = 1; + } + } + else if (c == test) { + ok = 1; + } + } + return (ok == negate ? NULL : pattern); +} |