Java tutorial
/** * 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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. */ package com.amertkara.multiplerunners.subcommands.analyzer; import org.apache.commons.cli.*; import org.springframework.boot.CommandLineRunner; import org.springframework.stereotype.Component; import javax.annotation.PostConstruct; /** * Analyzes a given file * * @author Mert Kara (github.com/amertkara) * @since 0.1.0 */ @Component public class AnalyzerCommand implements CommandLineRunner { private Options options; private CommandLineParser parser; private CommandLine cmd; private HelpFormatter formatter; /** * Initiates the sub-command */ @PostConstruct public void init() { options = new Options(); parser = new DefaultParser(); formatter = new HelpFormatter(); final Option fileOption = Option.builder("f").argName("file").hasArg().desc("File to be analyzed").build(); options.addOption(fileOption); } @Override public void run(String... args) throws Exception { if ("analyze".equals(args[0])) { try { cmd = parser.parse(options, args); cmd = parser.parse(options, args); } catch (UnrecognizedOptionException | MissingArgumentException e) { formatter.printHelp("sample", options); System.exit(1); } if (cmd.hasOption("f") && !cmd.getOptionValue("f").isEmpty()) { System.out.println("AnalyzerCommand is running on the file: " + cmd.getOptionValue("f")); // Call the analyzer core } } } }