1 files changed, 95 insertions, 0 deletions
diff --git a/dirname.c b/dirname.c
new file mode 100644
index 0000000..8b6b6c3
--- /dev/null
+++ b/dirname.c
@@ -0,0 +1,95 @@
+/*	$NetBSD: dirname.c,v 1.11 2009/11/24 13:34:20 tnozaki Exp $	*/
+
+/*-
+ * Copyright (c) 1997, 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Klaus Klein and Jason R. Thorpe.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#ifndef HAVE_DIRNAME
+
+#include <sys/cdefs.h>
+
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+char *
+dirname(char *path)
+{
+	static char result[PATH_MAX];
+	const char *lastp;
+	size_t len;
+
+	/*
+	 * If `path' is a null pointer or points to an empty string,
+	 * return a pointer to the string ".".
+	 */
+	if ((path == NULL) || (*path == '\0'))
+		goto singledot;
+
+
+	/* Strip trailing slashes, if any. */
+	lastp = path + strlen(path) - 1;
+	while (lastp != path && *lastp == '/')
+		lastp--;
+
+	/* Terminate path at the last occurence of '/'. */
+	do {
+		if (*lastp == '/') {
+			/* Strip trailing slashes, if any. */
+			while (lastp != path && *lastp == '/')
+				lastp--;
+
+			/* ...and copy the result into the result buffer. */
+			len = (lastp - path) + 1 /* last char */;
+			if (len > (PATH_MAX - 1))
+				len = PATH_MAX - 1;
+
+			memcpy(result, path, len);
+			result[len] = '\0';
+
+			return (result);
+		}
+	} while (--lastp >= path);
+
+	/* No /'s found, return a pointer to the string ".". */
+singledot:
+	result[0] = '.';
+	result[1] = '\0';
+
+	return (result);
+}
+#endif