| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| export class StringUtil { |
| public static getIndexOfLastNonAlphaNumeric(str: string): number { |
| let tLastIndex = str.length - 1; |
| |
| for (; tLastIndex >= 0; tLastIndex--) { |
| let ch = str[tLastIndex]; |
| if (/[^a-zA-Z0-9_]/.test(ch)) { |
| break; |
| } |
| } |
| |
| return tLastIndex; |
| } |
| } |
