busybox/coreutils/basename.c

52 lines
1.1 KiB
C
Raw Normal View History

/* 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 tarball for details.
*
*/
2003-03-19 14:43:01 +05:30
/* BB_AUDIT SUSv3 compliant */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
/* 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.
*/
#include <stdlib.h>
2003-03-19 14:43:01 +05:30
#include <stdio.h>
#include <string.h>
2003-03-19 14:43:01 +05:30
#include "busybox.h"
int basename_main(int argc, char **argv);
int basename_main(int argc, char **argv)
{
2003-03-19 14:43:01 +05:30
size_t m, n;
2000-07-11 01:38:09 +05:30
char *s;
2003-03-19 14:43:01 +05:30
if (((unsigned int)(argc-2)) >= 2) {
bb_show_usage();
}
2003-03-19 14:43:01 +05:30
s = bb_get_last_path_component(*++argv);
2003-03-19 14:43:01 +05:30
if (*++argv) {
n = strlen(*argv);
m = strlen(s);
2003-03-19 14:43:01 +05:30
if ((m > n) && ((strcmp)(s+m-n, *argv) == 0)) {
s[m-n] = '\0';
2003-03-19 14:43:01 +05:30
}
}
2003-03-19 14:43:01 +05:30
puts(s);
2003-03-19 14:43:01 +05:30
2006-10-27 04:51:47 +05:30
fflush_stdout_and_exit(EXIT_SUCCESS);
}