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+/*
+ * 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);
+}