1/* vi: set sw=4 ts=4: */
2/*
3 * Mini basename implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 *
9 */
10
11/* BB_AUDIT SUSv3 compliant */
12/* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
13
14
15/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
16 *
17 * Changes:
18 * 1) Now checks for too many args.  Need at least one and at most two.
19 * 2) Don't check for options, as per SUSv3.
20 * 3) Save some space by using strcmp().  Calling strncmp() here was silly.
21 */
22
23#include "libbb.h"
24
25/* This is a NOFORK applet. Be very careful! */
26
27int basename_main(int argc, char **argv);
28int basename_main(int argc, char **argv)
29{
30	size_t m, n;
31	char *s;
32
33	if (((unsigned int)(argc-2)) >= 2) {
34		bb_show_usage();
35	}
36
37	s = bb_get_last_path_component(*++argv);
38
39	if (*++argv) {
40		n = strlen(*argv);
41		m = strlen(s);
42		if ((m > n) && ((strcmp)(s+m-n, *argv) == 0)) {
43			s[m-n] = '\0';
44		}
45	}
46
47	puts(s);
48
49	return fflush(stdout);
50}
51