Function merge_patch

lib/cJSON.c:2564–2606

static cJSON *merge_patch(cJSON *target, const cJSON * const patch)
{
    cJSON *patch_child = NULL;

    if (!cJSON_IsObject(patch))
    {
        /* scalar value, array or NULL, just duplicate */
        cJSON_Delete(target);
        return cJSON_Duplicate(patch, 1);
    }

    if (!cJSON_IsObject(target))
    {
        cJSON_Delete(target);
        target = cJSON_CreateObject();
    }

    patch_child = patch->child;
    while (patch_child != NULL)
    {
        if (cJSON_IsNull(patch_child))
        {
            cJSON_DeleteItemFromObject(target, patch_child->string);
        }
        else
        {
            cJSON *replace_me = NULL;
            cJSON *replacement = NULL;

            replace_me = cJSON_DetachItemFromObject(target, patch_child->string);

            replacement = merge_patch(replace_me, patch_child);
            if (replacement == NULL)
            {
                return NULL;
            }

            cJSON_AddItemToObject(target, patch_child->string, replacement);
        }
        patch_child = patch_child->next;
    }
    return target;
}

cJSON * cJSONUtils_MergePatch(cJSON *target, const cJSON * const patch)
{