/*
* Mini basename implementation for busybox
*
- * Copyright (C) 1999,2000 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.
*/
-#include "internal.h"
-#include <stdio.h>
+/* BB_AUDIT SUSv3 compliant */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
-const char *basename_usage="basename FILE [SUFFIX]\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nStrips directory path and suffixes from FILE.\n"
- "If specified, also removes any trailing SUFFIX.\n"
-#endif
-;
+//kbuild:lib-$(CONFIG_BASENAME) += basename.o
+//config:config BASENAME
+//config: bool "basename"
+//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.
-extern int basename_main(int argc, char **argv)
-{
- int m, n;
- char *s, *s1;
+#include "libbb.h"
- if ((argc < 2) || (**(argv + 1) == '-')) {
- usage(basename_usage);
- }
+/* This is a NOFORK applet. Be very careful! */
- argv++;
+int basename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int basename_main(int argc, char **argv)
+{
+ size_t m, n;
+ char *s;
- s1=*argv+strlen(*argv)-1;
- while (s1 && *s1 == '/') {
- *s1 = '\0';
- s1--;
+ if ((unsigned)(argc-2) >= 2) {
+ bb_show_usage();
}
- s = strrchr(*argv, '/');
- if (s==NULL) s=*argv;
- else s++;
- if (argc>2) {
- argv++;
+ /* It should strip slash: /abc/def/ -> def */
+ s = bb_get_last_path_component_strip(*++argv);
+
+ m = strlen(s);
+ if (*++argv) {
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(TRUE);
-}
+ /* 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;
+}