001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.xbean.command;
018    
019    import java.io.InputStream;
020    import java.io.PrintStream;
021    import java.util.Iterator;
022    import java.util.Map;
023    import java.util.Set;
024    
025    public class Help implements Command {
026        public static void register() {
027            CommandRegistry.register("help", Help.class);
028        }
029    
030        public int main(String[] args, InputStream in, PrintStream out) {
031            Map hash = CommandRegistry.getCommandMap();;
032            Set set = hash.keySet();
033            Iterator cmds = set.iterator();
034            while (cmds.hasNext()) {
035                out.print(" " + cmds.next());
036                out.println("");
037            }
038            return 0;
039        }
040    }