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/*
* 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.qpid.tools.messagestore.commands;
import org.apache.qpid.tools.messagestore.MessageStoreTool;
import org.apache.qpid.tools.utils.Console;
import java.util.LinkedList;
import java.util.Map;
public class Help extends AbstractCommand
{
public Help(MessageStoreTool tool)
{
super(tool);
}
public String help()
{
return "Provides detailed help on commands.";
}
public String getCommand()
{
return "help";
}
public String usage()
{
return "help [<command>]";
}
public void execute(String... args)
{
assert args.length > 0;
assert args[0].equals(getCommand());
if (args.length > 1)
{
Command command = _tool.getCommands().get(args[1]);
if (command != null)
{
_console.println(command.help());
_console.println("Usage:" + command.usage());
}
else
{
commandError("Command not found: ", args);
}
}
else
{
java.util.List<java.util.List> data = new LinkedList<java.util.List>();
java.util.List<String> commandName = new LinkedList<String>();
java.util.List<String> commandDescription = new LinkedList<String>();
data.add(commandName);
data.add(commandDescription);
//Set up Headers
commandName.add("Command");
commandDescription.add("Description");
commandName.add(Console.ROW_DIVIDER);
commandDescription.add(Console.ROW_DIVIDER);
//Add current Commands with descriptions
Map<String, Command> commands = _tool.getCommands();
for (Command command : commands.values())
{
commandName.add(command.getCommand());
commandDescription.add(command.help());
}
_console.printMap("Available Commands", data);
}
}
}
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