object_array: add function object_array_filter()
[git/git.git] / object.c
index 20703f5..fcd4a82 100644 (file)
--- a/object.c
+++ b/object.c
@@ -278,6 +278,22 @@ void add_object_array_with_mode(struct object *obj, const char *name, struct obj
        array->nr = ++nr;
 }
 
+void object_array_filter(struct object_array *array,
+                        object_array_each_func_t want, void *cb_data)
+{
+       unsigned nr = array->nr, src, dst;
+       struct object_array_entry *objects = array->objects;
+
+       for (src = dst = 0; src < nr; src++) {
+               if (want(&objects[src], cb_data)) {
+                       if (src != dst)
+                               objects[dst] = objects[src];
+                       dst++;
+               }
+       }
+       array->nr = dst;
+}
+
 void object_array_remove_duplicates(struct object_array *array)
 {
        unsigned int ref, src, dst;