1.1 --- a/src/rbtree.c	Wed Oct 12 05:01:11 2011 +0300
     1.2 +++ b/src/rbtree.c	Wed Oct 12 05:25:34 2011 +0300
     1.3 @@ -90,6 +90,27 @@
     1.4  	rb->del_cls = cls;
     1.5  }
     1.6  
     1.7 +
     1.8 +void rb_clear(struct rbtree *rb)
     1.9 +{
    1.10 +	del_tree(rb->root, rb->del, rb->del_cls);
    1.11 +	rb->root = 0;
    1.12 +}
    1.13 +
    1.14 +int rb_copy(struct rbtree *dest, struct rbtree *src)
    1.15 +{
    1.16 +	struct rbnode *node;
    1.17 +
    1.18 +	rb_clear(dest);
    1.19 +	rb_begin(src);
    1.20 +	while((node = rb_next(src))) {
    1.21 +		if(rb_insert(dest, node->key, node->data) == -1) {
    1.22 +			return -1;
    1.23 +		}
    1.24 +	}
    1.25 +	return 0;
    1.26 +}
    1.27 +
    1.28  int rb_size(struct rbtree *rb)
    1.29  {
    1.30  	return count_nodes(rb->root);