samza-tools/src/main/java/org/apache/samza/tools/CommandLineHelper.java

/*
* 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.
*/

package org.apache.samza.tools;

import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.lang3.StringUtils;


/**
 * Simple command line helper util.
 */
public class CommandLineHelper {
  public static Option createOption(String shortOpt, String longOpt, String argName, boolean required,
      String description) {
    OptionBuilder optionBuilder = OptionBuilder.withLongOpt(longOpt).withDescription(description).isRequired(required);

    if (!StringUtils.isEmpty(argName)) {

      optionBuilder = optionBuilder.withArgName(argName).hasArg();
    }

    return optionBuilder.create(shortOpt);
  }
}