mirror of
https://git.busybox.net/busybox.git
synced 2024-11-30 17:13:32 +08:00
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini basename implementation for busybox
|
|
*
|
|
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
|
|
*
|
|
* Changes:
|
|
* 1) Now checks for too many args. Need at least one and at most two.
|
|
* 2) Don't check for options, as per SUSv3.
|
|
* 3) Save some space by using strcmp(). Calling strncmp() here was silly.
|
|
*/
|
|
//config:config BASENAME
|
|
//config: bool "basename (371 bytes)"
|
|
//config: default y
|
|
//config: help
|
|
//config: basename is used to strip the directory and suffix from filenames,
|
|
//config: leaving just the filename itself. Enable this option if you wish
|
|
//config: to enable the 'basename' utility.
|
|
|
|
//applet:IF_BASENAME(APPLET_NOFORK(basename, basename, BB_DIR_USR_BIN, BB_SUID_DROP, basename))
|
|
|
|
//kbuild:lib-$(CONFIG_BASENAME) += basename.o
|
|
|
|
/* BB_AUDIT SUSv3 compliant */
|
|
/* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
|
|
|
|
//usage:#define basename_trivial_usage
|
|
//usage: "FILE [SUFFIX]"
|
|
//usage:#define basename_full_usage "\n\n"
|
|
//usage: "Strip directory path and .SUFFIX from FILE"
|
|
//usage:
|
|
//usage:#define basename_example_usage
|
|
//usage: "$ basename /usr/local/bin/foo\n"
|
|
//usage: "foo\n"
|
|
//usage: "$ basename /usr/local/bin/\n"
|
|
//usage: "bin\n"
|
|
//usage: "$ basename /foo/bar.txt .txt\n"
|
|
//usage: "bar"
|
|
|
|
#include "libbb.h"
|
|
|
|
/* This is a NOFORK applet. Be very careful! */
|
|
|
|
int basename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int basename_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
size_t m, n;
|
|
char *s;
|
|
|
|
if (argv[1] && strcmp(argv[1], "--") == 0) {
|
|
argv++;
|
|
}
|
|
if (!argv[1])
|
|
bb_show_usage();
|
|
|
|
/* It should strip slash: /abc/def/ -> def */
|
|
s = bb_get_last_path_component_strip(*++argv);
|
|
|
|
m = strlen(s);
|
|
if (*++argv) {
|
|
if (argv[1])
|
|
bb_show_usage();
|
|
n = strlen(*argv);
|
|
if ((m > n) && (strcmp(s+m-n, *argv) == 0)) {
|
|
m -= n;
|
|
/*s[m] = '\0'; - redundant */
|
|
}
|
|
}
|
|
|
|
/* puts(s) will do, but we can do without stdio this way: */
|
|
s[m++] = '\n';
|
|
/* NB: != is correct here: */
|
|
return full_write(STDOUT_FILENO, s, m) != (ssize_t)m;
|
|
}
|