directory: added directory_get_name()

directory_get_name() returns the base name of the directory.

src/directory.c

@@ -18,6 +18,7 @@
 
 #include "directory.h"
 #include "utils.h"
+#include "path.h"
 
 #include <assert.h>
 #include <string.h>
@@ -49,6 +50,12 @@ directory_free(struct directory *directory)
 	/*directory_get_path(NULL); */
 }
 
+const char *
+directory_get_name(const struct directory *directory)
+{
+	return mpd_basename(directory->path);
+}
+
 void
 directory_prune_empty(struct directory *directory)
 {

src/directory.h

@@ -68,6 +68,12 @@ directory_get_path(const struct directory *directory)
 	return directory->path;
 }
 
+/**
+ * Returns the base name of the directory.
+ */
+const char *
+directory_get_name(const struct directory *directory);
+
 static inline struct directory *
 directory_get_child(const struct directory *directory, const char *name)
 {