1 /* $OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $ */
4 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 static char rcsid[] = "$OpenBSD: basename.c,v 1.11 2003/06/17 21:56:23 millert Exp $";
27 basename(const char *path)
29 static char bname[MAXPATHLEN];
30 register const char *endp, *startp;
32 /* Empty or NULL string gets treated as "." */
33 if (path == NULL || *path == '\0') {
34 (void)strlcpy(bname, ".", sizeof bname);
38 /* Strip trailing slashes */
39 endp = path + strlen(path) - 1;
40 while (endp > path && *endp == '/')
43 /* All slashes become "/" */
44 if (endp == path && *endp == '/') {
45 (void)strlcpy(bname, "/", sizeof bname);
49 /* Find the start of the base */
51 while (startp > path && *(startp - 1) != '/')
54 if (endp - startp + 2 > sizeof(bname)) {
58 strlcpy(bname, startp, endp - startp + 2);
62 #endif /* !defined(HAVE_BASENAME) */