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-rw-r--r--libbb/get_last_path_component.c42
-rw-r--r--libbb/run_shell.c2
2 files changed, 27 insertions, 17 deletions
diff --git a/libbb/get_last_path_component.c b/libbb/get_last_path_component.c
index b7bc0e6..0f60215 100644
--- a/libbb/get_last_path_component.c
+++ b/libbb/get_last_path_component.c
@@ -8,25 +8,35 @@
*/
#include "libbb.h"
-
-char *bb_get_last_path_component(char *path)
+/*
+ * "/" -> "/"
+ * "abc" -> "abc"
+ * "abc/def" -> "def"
+ * "abc/def/" -> ""
+ */
+char *bb_get_last_path_component_nostrip(const char *path)
{
- char *first = path;
- char *last;
+ char *slash = strrchr(path, '/');
+
+ if (!slash || (slash == path && !slash[1]))
+ return (char*)path;
- last = path - 1;
+ return slash + 1;
+}
- while (*path) {
- if ((*path != '/') && (path > ++last)) {
- last = first = path;
- }
- ++path;
- }
+/*
+ * "/" -> "/"
+ * "abc" -> "abc"
+ * "abc/def" -> "def"
+ * "abc/def/" -> "def" !!
+ */
+char *bb_get_last_path_component_strip(char *path)
+{
+ char *slash = last_char_is(path, '/');
- if (*first == '/') {
- last = first;
- }
- last[1] = '\0';
+ if (slash)
+ while (*slash == '/' && slash != path)
+ *slash-- = '\0';
- return first;
+ return bb_get_last_path_component_nostrip(path);
}
diff --git a/libbb/run_shell.c b/libbb/run_shell.c
index b2b4216..239887d 100644
--- a/libbb/run_shell.c
+++ b/libbb/run_shell.c
@@ -67,7 +67,7 @@ void run_shell(const char *shell, int loginshell, const char *command, const cha
args = xmalloc(sizeof(char*) * (4 + additional_args_cnt));
- args[0] = bb_get_last_path_component(xstrdup(shell));
+ args[0] = bb_get_last_path_component_nostrip(xstrdup(shell));
if (loginshell)
args[0] = xasprintf("-%s", args[0]);