| /** |
| * 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.commons.cli; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * The class GnuParser provides an implementation of the |
| * {@link Parser#flatten(Options,String[],boolean) flatten} method. |
| * |
| * @author John Keyes (john at integralsource.com) |
| * @see Parser |
| * @version $Revision$ |
| */ |
| public class GnuParser extends Parser { |
| |
| /** holder for flattened tokens */ |
| private ArrayList tokens = new ArrayList(); |
| |
| /** |
| * <p>Resets the members to their original state i.e. remove |
| * all of <code>tokens</code> entries. |
| */ |
| private void init() |
| { |
| tokens.clear(); |
| } |
| |
| /** |
| * <p>This flatten method does so using the following rules: |
| * <ol> |
| * <li>If an {@link Option} exists for the first character of |
| * the <code>arguments</code> entry <b>AND</b> an {@link Option} |
| * does not exist for the whole <code>argument</code> then |
| * add the first character as an option to the processed tokens |
| * list e.g. "-D" and add the rest of the entry to the also.</li> |
| * <li>Otherwise just add the token to the processed tokens list. |
| * </li> |
| * </ol> |
| * </p> |
| * |
| * @param options The Options to parse the arguments by. |
| * @param arguments The arguments that have to be flattened. |
| * @param stopAtNonOption specifies whether to stop |
| * flattening when a non option has been encountered |
| * @return a String array of the flattened arguments |
| */ |
| protected String[] flatten(Options options, String[] arguments, |
| boolean stopAtNonOption) |
| { |
| init(); |
| |
| boolean eatTheRest = false; |
| Option currentOption = null; |
| |
| for (int i = 0; i < arguments.length; i++) |
| { |
| if ("--".equals(arguments[i])) |
| { |
| eatTheRest = true; |
| tokens.add("--"); |
| } |
| else if ("-".equals(arguments[i])) |
| { |
| tokens.add("-"); |
| } |
| else if (arguments[i].startsWith("-")) |
| { |
| Option option = options.getOption(arguments[i]); |
| |
| // this is not an Option |
| if (option == null) |
| { |
| // handle special properties Option |
| Option specialOption = |
| options.getOption(arguments[i].substring(0, 2)); |
| |
| if (specialOption != null) |
| { |
| tokens.add(arguments[i].substring(0, 2)); |
| tokens.add(arguments[i].substring(2)); |
| } |
| else if (stopAtNonOption) |
| { |
| eatTheRest = true; |
| tokens.add(arguments[i]); |
| } |
| else |
| { |
| tokens.add(arguments[i]); |
| } |
| } |
| else |
| { |
| // WARNING: Findbugs reports major problems with the following code. |
| // As option cannot be null, currentOption cannot and |
| // much of the code below is never going to be run. |
| |
| currentOption = option; |
| |
| // special option |
| Option specialOption = |
| options.getOption(arguments[i].substring(0, 2)); |
| |
| if ((specialOption != null) && (option == null)) |
| { |
| tokens.add(arguments[i].substring(0, 2)); |
| tokens.add(arguments[i].substring(2)); |
| } |
| else if ((currentOption != null) && currentOption.hasArg()) |
| { |
| if (currentOption.hasArg()) |
| { |
| tokens.add(arguments[i]); |
| currentOption = null; |
| } |
| else if (currentOption.hasArgs()) |
| { |
| tokens.add(arguments[i]); |
| } |
| else if (stopAtNonOption) |
| { |
| eatTheRest = true; |
| tokens.add("--"); |
| tokens.add(arguments[i]); |
| } |
| else |
| { |
| tokens.add(arguments[i]); |
| } |
| } |
| else if (currentOption != null) |
| { |
| tokens.add(arguments[i]); |
| } |
| else if (stopAtNonOption) |
| { |
| eatTheRest = true; |
| tokens.add("--"); |
| tokens.add(arguments[i]); |
| } |
| else |
| { |
| tokens.add(arguments[i]); |
| } |
| } |
| } |
| else |
| { |
| tokens.add(arguments[i]); |
| } |
| |
| if (eatTheRest) |
| { |
| for (i++; i < arguments.length; i++) |
| { |
| tokens.add(arguments[i]); |
| } |
| } |
| } |
| |
| return (String[]) tokens.toArray(new String[tokens.size()]); |
| } |
| } |