1 /* vi: set sw=4 ts=4: */
3 * Mini basename implementation for busybox
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
13 * 1) Now checks for too many args. Need at least one and at most two.
14 * 2) Don't check for options, as per SUSv3.
15 * 3) Save some space by using strcmp(). Calling strncmp() here was silly.
18 /* BB_AUDIT SUSv3 compliant */
19 /* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
21 //kbuild:lib-$(CONFIG_BASENAME) += basename.o
23 //config:config BASENAME
24 //config: bool "basename"
27 //config: basename is used to strip the directory and suffix from filenames,
28 //config: leaving just the filename itself. Enable this option if you wish
29 //config: to enable the 'basename' utility.
31 //usage:#define basename_trivial_usage
32 //usage: "FILE [SUFFIX]"
33 //usage:#define basename_full_usage "\n\n"
34 //usage: "Strip directory path and .SUFFIX from FILE"
36 //usage:#define basename_example_usage
37 //usage: "$ basename /usr/local/bin/foo\n"
39 //usage: "$ basename /usr/local/bin/\n"
41 //usage: "$ basename /foo/bar.txt .txt\n"
46 /* This is a NOFORK applet. Be very careful! */
48 int basename_main(int argc
, char **argv
) MAIN_EXTERNALLY_VISIBLE
;
49 int basename_main(int argc
, char **argv
)
54 if (argv
[1] && strcmp(argv
[1], "--") == 0) {
59 if ((unsigned)(argc
-2) >= 2) {
63 /* It should strip slash: /abc/def/ -> def */
64 s
= bb_get_last_path_component_strip(*++argv
);
69 if ((m
> n
) && (strcmp(s
+m
-n
, *argv
) == 0)) {
71 /*s[m] = '\0'; - redundant */
75 /* puts(s) will do, but we can do without stdio this way: */
77 /* NB: != is correct here: */
78 return full_write(STDOUT_FILENO
, s
, m
) != (ssize_t
)m
;