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1/**
2 * @file Describe the file
3 * Copyright (c) 2023 Huawei Device Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17export function isEmptyStr(str: string): boolean {
18  if (str === null || str === undefined) {
19    return true;
20  }
21  return str.length <= 0;
22}
23
24/**
25 * Check whether the character string is consecutive without separators such as spaces.
26 *
27 * @param str the string to be check
28 */
29export function isUninterrupted(str: string): boolean {
30  if (isEmptyStr(str)) {
31    return false;
32  }
33  return new RegExp("/^[a-zA-z][a-zA-Z0-9]*$/").test(str);
34}