/*
* Mini basename implementation for busybox
*
- * Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * 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-$(CONFIG_BASENAME) += basename.o
+
+/* BB_AUDIT SUSv3 compliant */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
-/* getopt not needed */
+//usage:#define basename_trivial_usage
+//usage: "FILE [SUFFIX]"
+//usage:#define basename_full_usage "\n\n"
+//usage: "Strip directory path and .SUFFIX from FILE"
+//usage:
+//usage:#define basename_example_usage
+//usage: "$ 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 <stdlib.h>
-#include "busybox.h"
-#include <string.h>
+#include "libbb.h"
-extern int basename_main(int argc, char **argv)
+/* 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)
{
- int m, n;
+ size_t m, n;
char *s;
- if ((argc < 2) || (**(argv + 1) == '-')) {
- show_usage();
+ if (argv[1] && strcmp(argv[1], "--") == 0) {
+ argv++;
}
+ if (!argv[1])
+ bb_show_usage();
- argv++;
-
- s = get_last_path_component(*argv);
+ /* It should strip slash: /abc/def/ -> def */
+ s = bb_get_last_path_component_strip(*++argv);
- if (argc>2) {
- argv++;
+ m = strlen(s);
+ if (*++argv) {
+ if (argv[1])
+ bb_show_usage();
n = strlen(*argv);
- m = strlen(s);
- if (m>=n && strncmp(s+m-n, *argv, n)==0)
- s[m-n] = '\0';
+ if ((m > n) && (strcmp(s+m-n, *argv) == 0)) {
+ m -= n;
+ /*s[m] = '\0'; - redundant */
+ }
}
- printf("%s\n", s);
- return EXIT_SUCCESS;
+
+ /* 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;
}