Function apply_patch

cJSON_Utils.c:807–1036

}

static int apply_patch(cJSON *object, const cJSON *patch, const cJSON_bool case_sensitive)
{
    cJSON *path = NULL;
    cJSON *value = NULL;
    cJSON *parent = NULL;
    enum patch_operation opcode = INVALID;
    unsigned char *parent_pointer = NULL;
    unsigned char *child_pointer = NULL;
    int status = 0;

    path = get_object_item(patch, "path", case_sensitive);
    if (!cJSON_IsString(path))
    {
        /* malformed patch. */
        status = 2;
        goto cleanup;
    }

    opcode = decode_patch_operation(patch, case_sensitive);
    if (opcode == INVALID)
    {
        status = 3;
        goto cleanup;
    }
    else if (opcode == TEST)
    {
        /* compare value: {...} with the given path */
        status = !compare_json(get_item_from_pointer(object, path->valuestring, case_sensitive), get_object_item(patch, "value", case_sensitive), case_sensitive);
        goto cleanup;
    }

    /* special case for replacing the root */
    if (path->valuestring[0] == '\0')
    {
        if (opcode == REMOVE)
        {
            static const cJSON invalid = { NULL, NULL, NULL, cJSON_Invalid, NULL, 0, 0, NULL};

            overwrite_item(object, invalid);

            status = 0;
            goto cleanup;
        }

        if ((opcode == REPLACE) || (opcode == ADD))
        {
            value = get_object_item(patch, "value", case_sensitive);
            if (value == NULL)
            {
                /* missing "value" for add/replace. */
                status = 7;
                goto cleanup;
            }

            value = cJSON_Duplicate(value, 1);
            if (value == NULL)
            {
                /* out of memory for add/replace. */