Add json_object_update_{existing,missing}

[jansson.git] / src / value.c

diff --git a/src/value.c b/src/value.c
index eadf596..2018c4d 100644 (file)
--- a/src/value.c
+++ b/src/value.c
@@ -149,6 +149,38 @@ int json_object_update(json_t *object, json_t *other)
     return 0;
 }
 
+int json_object_update_existing(json_t *object, json_t *other)
+{
+    const char *key;
+    json_t *value;
+
+    if(!json_is_object(object) || !json_is_object(other))
+        return -1;
+
+    json_object_foreach(other, key, value) {
+        if(json_object_get(object, key))
+            json_object_set_nocheck(object, key, value);
+    }
+
+    return 0;
+}
+
+int json_object_update_missing(json_t *object, json_t *other)
+{
+    const char *key;
+    json_t *value;
+
+    if(!json_is_object(object) || !json_is_object(other))
+        return -1;
+
+    json_object_foreach(other, key, value) {
+        if(!json_object_get(object, key))
+            json_object_set_nocheck(object, key, value);
+    }
+
+    return 0;
+}
+
 void *json_object_iter(json_t *json)
 {
     json_object_t *object;