10fbfc30aSopenharmony_ci/**
20fbfc30aSopenharmony_ci * @file Describe the file
30fbfc30aSopenharmony_ci * Copyright (c) 2023 Huawei Device Co., Ltd.
40fbfc30aSopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
50fbfc30aSopenharmony_ci * you may not use this file except in compliance with the License.
60fbfc30aSopenharmony_ci * You may obtain a copy of the License at
70fbfc30aSopenharmony_ci *
80fbfc30aSopenharmony_ci *     http://www.apache.org/licenses/LICENSE-2.0
90fbfc30aSopenharmony_ci *
100fbfc30aSopenharmony_ci * Unless required by applicable law or agreed to in writing, software
110fbfc30aSopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
120fbfc30aSopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
130fbfc30aSopenharmony_ci * See the License for the specific language governing permissions and
140fbfc30aSopenharmony_ci * limitations under the License.
150fbfc30aSopenharmony_ci */
160fbfc30aSopenharmony_ci
170fbfc30aSopenharmony_ciexport function isEmptyStr(str: string): boolean {
180fbfc30aSopenharmony_ci  if (str === null || str === undefined) {
190fbfc30aSopenharmony_ci    return true;
200fbfc30aSopenharmony_ci  }
210fbfc30aSopenharmony_ci  return str.length <= 0;
220fbfc30aSopenharmony_ci}
230fbfc30aSopenharmony_ci
240fbfc30aSopenharmony_ci/**
250fbfc30aSopenharmony_ci * Check whether the character string is consecutive without separators such as spaces.
260fbfc30aSopenharmony_ci *
270fbfc30aSopenharmony_ci * @param str the string to be check
280fbfc30aSopenharmony_ci */
290fbfc30aSopenharmony_ciexport function isUninterrupted(str: string): boolean {
300fbfc30aSopenharmony_ci  if (isEmptyStr(str)) {
310fbfc30aSopenharmony_ci    return false;
320fbfc30aSopenharmony_ci  }
330fbfc30aSopenharmony_ci  return new RegExp("/^[a-zA-z][a-zA-Z0-9]*$/").test(str);
340fbfc30aSopenharmony_ci}