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