Java tutorial
/* Copyright 2016 Google Inc * * Licensed 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. */ package com.google.api.codegen.config; import com.google.api.tools.framework.tools.ToolOptions; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.DefaultParser; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Option; import org.apache.commons.cli.Options; public class ConfigGeneratorTool { public static void main(String[] args) throws Exception { Options options = new Options(); options.addOption("h", "help", false, "show usage"); options.addOption(Option.builder().longOpt("descriptor_set") .desc("The descriptor set representing the compiled input protos.").hasArg() .argName("DESCRIPTOR-SET").required(true).build()); options.addOption( Option.builder("o").longOpt("output").desc("The directory in which to output the generated config.") .hasArg().argName("OUTPUT-FILE").required(true).build()); CommandLine cl = (new DefaultParser()).parse(options, args); if (cl.hasOption("help")) { HelpFormatter formater = new HelpFormatter(); formater.printHelp("ConfigGeneratorTool", options); } generate(cl.getOptionValue("descriptor_set"), cl.getOptionValue("output")); } private static void generate(String descriptorSet, String outputFile) { ToolOptions options = ToolOptions.create(); options.set(ConfigGeneratorApi.OUTPUT_FILE, outputFile); options.set(ToolOptions.DESCRIPTOR_SET, descriptorSet); ConfigGeneratorApi configGen = new ConfigGeneratorApi(options); configGen.run(); } }