aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--libbb/get_last_path_component.c63
1 files changed, 27 insertions, 36 deletions
diff --git a/libbb/get_last_path_component.c b/libbb/get_last_path_component.c
index 85c7609c9..6af726c83 100644
--- a/libbb/get_last_path_component.c
+++ b/libbb/get_last_path_component.c
@@ -1,8 +1,8 @@
/* vi: set sw=4 ts=4: */
/*
- * Utility routines.
+ * get_last_path_component implementation for busybox
*
- * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
+ * Copyright (C) 2001 Manuel Novoa III <mjn3@opensource.lineo.com>
*
* 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
@@ -17,49 +17,40 @@
* 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
+ *
*/
-#include <stdio.h>
-#include <string.h>
-#include "libbb.h"
-
+/* Set to 1 if you want basename() behavior for NULL or "". */
+/* WARNING!!! Doing so will break basename applet at least! */
+#define EMULATE_BASENAME 0
char *get_last_path_component(char *path)
{
- char *s;
- register char *ptr = path;
- register char *prev = 0;
+#if EMULATE_BASENAME
+ static const char null_or_empty[] = ".";
+#endif
+ char *first = path;
+ char *last;
+
+#if EMULATE_BASENAME
+ if (!path || !*path) {
+ return (char *) null_or_empty;
+ }
+#endif
- while (*ptr)
- ptr++;
- s = ptr - 1;
+ last = path - 1;
- /* strip trailing slashes */
- while (s != path && *s == '/') {
- *s-- = '\0';
+ while (*path) {
+ if ((*path != '/') && (path > ++last)) {
+ last = first = path;
+ }
+ ++path;
}
- /* find last component */
- ptr = path;
- while (*ptr != '\0') {
- if (*ptr == '/')
- prev = ptr;
- ptr++;
+ if (*first == '/') {
+ last = first;
}
- s = prev;
+ last[1] = 0;
- if (s == NULL || s[1] == '\0')
- return path;
- else
- return s+1;
+ return first;
}
-
-
-/* END CODE */
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/