From f9ab90d9d6d02989a075d0f0074496d5b1045e4b Mon Sep 17 00:00:00 2001
From: rgrimes <rgrimes@FreeBSD.org>
Date: Fri, 27 May 1994 12:33:43 +0000
Subject: BSD 4.4 Lite Usr.bin Sources

---
 usr.bin/basename/basename.c | 138 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 usr.bin/basename/basename.c

(limited to 'usr.bin/basename/basename.c')

diff --git a/usr.bin/basename/basename.c b/usr.bin/basename/basename.c
new file mode 100644
index 0000000..b369190
--- /dev/null
+++ b/usr.bin/basename/basename.c
@@ -0,0 +1,138 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)basename.c	8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	char *p;
+	int ch;
+
+	while ((ch = getopt(argc, argv, "")) != EOF)
+		switch(ch) {
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc != 1 && argc != 2)
+		usage();
+
+	/*
+	 * (1) If string is // it is implementation defined whether steps (2)
+	 *     through (5) are skipped or processed.
+	 *
+	 * (2) If string consists entirely of slash characters, string shall
+	 *     be set to a single slash character.  In this case, skip steps
+	 *     (3) through (5).
+	 */
+	for (p = *argv;; ++p) {
+		if (!*p) {
+			if (p > *argv)
+				(void)printf("/\n");
+			else
+				(void)printf("\n");
+			exit(0);
+		}
+		if (*p != '/')
+			break;
+	}
+
+	/*
+	 * (3) If there are any trailing slash characters in string, they
+	 *     shall be removed.
+	 */
+	for (; *p; ++p)
+		continue;
+	while (*--p == '/')
+		continue;
+	*++p = '\0';
+
+	/*
+	 * (4) If there are any slash characters remaining in string, the
+	 *     prefix of string up to an including the last slash character
+	 *     in string shall be removed.
+	 */
+	while (--p >= *argv)
+		if (*p == '/')
+			break;
+	++p;
+
+	/*
+	 * (5) If the suffix operand is present, is not identical to the
+	 *     characters remaining in string, and is identical to a suffix
+	 *     of the characters remaining in string, the suffix suffix
+	 *     shall be removed from string.
+	 */
+	if (*++argv) {
+		int suffixlen, stringlen, off;
+
+		suffixlen = strlen(*argv);
+		stringlen = strlen(p);
+
+		if (suffixlen < stringlen) {
+			off = stringlen - suffixlen;
+			if (!strcmp(p + off, *argv))
+				p[off] = '\0';
+		}
+	}
+	(void)printf("%s\n", p);
+	exit(0);
+}
+
+void
+usage()
+{
+
+	(void)fprintf(stderr, "usage: basename string [suffix]\n");
+	exit(1);
+}
-- 
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