}
const char *last_path_component(const char *path) {
- /* Finds the last component of the path, preserving the
- * optional trailing slash that signifies a directory.
+
+ /* Finds the last component of the path, preserving the optional trailing slash that signifies a directory.
+ *
* a/b/c → c
* a/b/c/ → c/
+ * x → x
+ * x/ → x/
+ * /y → y
+ * /y/ → y/
* / → /
* // → /
* /foo/a → a
* /foo/a/ → a/
- * This is different than basename, which returns "" when
- * a trailing slash is present.
+ *
+ * Also, the empty string is mapped to itself.
+ *
+ * This is different than basename(), which returns "" when a trailing slash is present.
*/
unsigned l, k;
assert_se(streq(last_path_component("/foo/a"), "a"));
assert_se(streq(last_path_component("/foo/a/"), "a/"));
assert_se(streq(last_path_component(""), ""));
+ assert_se(streq(last_path_component("a"), "a"));
+ assert_se(streq(last_path_component("a/"), "a/"));
+ assert_se(streq(last_path_component("/a"), "a"));
+ assert_se(streq(last_path_component("/a/"), "a/"));
}
static void test_filename_is_valid(void) {