shash: New function shash_count().

Author: blp

lib/shash.c

@@ -58,6 +58,12 @@ shash_is_empty(const struct shash *shash)
     return hmap_is_empty(&shash->map);
 }
 
+size_t
+shash_count(const struct shash *shash)
+{
+    return hmap_count(&shash->map);
+}
+
 /* It is the caller's responsibility to avoid duplicate names, if that is
  * desirable. */
 struct shash_node *

lib/shash.h

@@ -42,6 +42,7 @@ void shash_init(struct shash *);
 void shash_destroy(struct shash *);
 void shash_clear(struct shash *);
 bool shash_is_empty(const struct shash *);
+size_t shash_count(const struct shash *);
 struct shash_node *shash_add(struct shash *, const char *, void *);
 void shash_delete(struct shash *, struct shash_node *);
 struct shash_node *shash_find(const struct shash *, const char *);