utils-json: adds function for new array/object

Change-Id: I14168684cdfcae7ec0689eb45ab09aff82d66d22
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

2 files changed, 22 insertions, 0 deletions

diff --git a/src/utils-json.c b/src/utils-json.c
index 3af2a4c..eb1f90b 100644
--- a/src/utils-json.c
+++ b/src/utils-json.c
@@ -117,3 +117,23 @@ int j_add_integer(struct json_object *obj, const char *key, int val)
 	return str ? j_add(obj, key, str) : (errno = ENOMEM, 0);
 }
 
+struct json_object *j_add_new_array(struct json_object *obj, const char *key)
+{
+	struct json_object *result = json_object_new_array();
+	if (result != NULL && !j_add(obj, key, result)) {
+		json_object_put(result);
+		result = NULL;
+	}
+	return result;
+}
+
+struct json_object *j_add_new_object(struct json_object *obj, const char *key)
+{
+	struct json_object *result = json_object_new_object();
+	if (result != NULL && !j_add(obj, key, result)) {
+		json_object_put(result);
+		result = NULL;
+	}
+	return result;
+}
+
diff --git a/src/utils-json.h b/src/utils-json.h
index 4b86fa9..9d495f8 100644
--- a/src/utils-json.h
+++ b/src/utils-json.h
@@ -61,4 +61,6 @@ extern int j_add(struct json_object *obj, const char *key, struct json_object *v
 extern int j_add_string(struct json_object *obj, const char *key, const char *val);
 extern int j_add_boolean(struct json_object *obj, const char *key, int val);
 extern int j_add_integer(struct json_object *obj, const char *key, int val);
+extern struct json_object *j_add_new_array(struct json_object *obj, const char *key);
+extern struct json_object *j_add_new_object(struct json_object *obj, const char *key);