src/main/java/com/beust/jcommander/IDefaultProvider.java

/**
 * Copyright (C) 2010 the original author or authors.
 * See the notice.md file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * 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.beust.jcommander;

/**
 * Allows the specification of default values.
 * 
 * @author cbeust
 */
public interface IDefaultProvider {

  /**
   * @param optionName The name of the option as specified in the names() attribute
   * of the @Parameter option (e.g. "-file").
   * 
   * @return the default value for this option.
   */
  String getDefaultValueFor(String optionName);
}