Handle overwriting existing hash table entries

hash_index.c

@@ -91,15 +91,19 @@ bool hash_index_set( const char* index, const char* key, int value )
 	};
 	struct hash_index_entry* ptr = &new_entry;
 
-	/*
-	for( int i = 0; i < ari.entries.count; ++i ) {
-		struct reverse_index_entry* entry = ari.entries.items[i];
-		printf( "\tentry[%d] = { .uri = %s, .account_id = %d }\n", i, entry->uri, entry->account_id );
+	// Overwrite existing entries
+	for( int i = 0; i < hi.entries.count; ++i ) {
+		struct hash_index_entry* entry = hi.entries.items[i];
+		//printf( "\tentry[%d] = { .key = %s, .value = %d }\n", i, entry->key, entry->value );
+
+		if( 0 == strcmp( entry->key, key ) ) {
+			entry->value = value;
+			goto exists;
+		}
 	}
-	//*/
 
 	array_append( &hi.entries, sizeof(struct hash_index_entry), &ptr );
-
+exists:
 	json_write_object_layout_to_file( filename, "\t", hash_index_layout, &hi );
 
 	for( int i = 0; i < hi.entries.count-1; ++i ) {