Function merge_patch

cpworker/src/cJSON/cJSON_Utils.c:1345–1403

CJSON_PUBLIC(void) cJSONUtils_SortObjectCaseSensitive(cJSON *const object) { sort_object(object, true); }

static cJSON *merge_patch(cJSON *target, const cJSON *const patch, const cJSON_bool case_sensitive)
{
    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))
        {
            /* NULL is the indicator to remove a value, see RFC7396 */
            if (case_sensitive)
            {
                cJSON_DeleteItemFromObjectCaseSensitive(target, patch_child->string);
            }
            else
            {
                cJSON_DeleteItemFromObject(target, patch_child->string);
            }
        }
        else
        {
            cJSON *replace_me = NULL;
            cJSON *replacement = NULL;

            if (case_sensitive)
            {
                replace_me = cJSON_DetachItemFromObjectCaseSensitive(target, patch_child->string);
            }
            else
            {
                replace_me = cJSON_DetachItemFromObject(target, patch_child->string);
            }

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

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