1/* 2 * Copyright (c) 2022-2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16import type { OptionValues } from 'commander'; 17import type { Command } from 'commander'; 18 19export abstract class CLI<OptionsT> { 20 static parseCLI<T>(cli: CLI<T>): T { 21 const command = cli.doInit(); 22 const args = cli.doRead(); 23 const parsedOpts = command.parse(args).opts(); 24 const opts = cli.doOptions(parsedOpts); 25 const err = cli.doValidate(opts); 26 27 if (err) { 28 throw err; 29 } 30 31 return opts; 32 } 33 34 abstract doRead(): string[]; 35 36 abstract doInit(): Command; 37 38 abstract doOptions(opts: OptionValues): OptionsT; 39 40 abstract doValidate(opts: OptionsT): Error | undefined; 41} 42