2 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
17 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
18 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
19 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 static char rcsid[] = "$OpenBSD: basename.c,v 1.4 1999/05/30 17:10:30 espie Exp $";
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
46 static char *bname = NULL;
47 const char *endp, *startp;
50 bname = (char *)malloc(MAXPATHLEN);
55 /* Empty or NULL string gets treated as "." */
56 if (path == NULL || *path == '\0') {
57 (void)strcpy(bname, ".");
61 /* Strip trailing slashes */
62 endp = path + strlen(path) - 1;
63 while (endp > path && *endp == '/')
66 /* All slashes becomes "/" */
67 if (endp == path && *endp == '/') {
68 (void)strcpy(bname, "/");
72 /* Find the start of the base */
74 while (startp > path && *(startp - 1) != '/')
77 if (endp - startp + 2 > MAXPATHLEN) {
81 (void)strncpy(bname, startp, endp - startp + 1);
82 bname[endp - startp + 1] = '\0';