/*
* Copyright 2008 Hippo.
*
* 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 org.hippoecm.tools.cli.commands;
import java.util.Arrays;
import org.hippoecm.tools.cli.Command;
import org.hippoecm.tools.cli.CommandHelper;
/**
* Help command.
*/
public class Help implements Command {
/**
* {@inheritDoc}
*/
public final String getCommand() {
return "help";
}
/**
* {@inheritDoc}
*/
public final String[] getAliases() {
return new String[] { "?", "commands" };
}
/**
* {@inheritDoc}
*/
public final String usage() {
return "help [<command>]";
}
/**
* {@inheritDoc}
*/
public final String help() {
return "print general help message or the help of the command";
}
/**
* {@inheritDoc}
*/
public final boolean execute(final String[] args) {
if (args.length == 1) {
String[] commands = CommandHelper.getCommandsAsArray();
Arrays.sort(commands);
System.out.printf("%-20s%-60s\n", "Command", "Usage");
System.out.printf("%-20s%-60s\n", "--------------", "--------------------");
for (String command : commands) {
System.out.printf("%-20s%-60s\n", command, CommandHelper.runMethod("usage", CommandHelper
.getClassForCommand(command)));
}
System.out.printf("%-20s%-60s\n", "--------------", "--------------------");
} else if (args.length == 2) {
String command = args[1];
System.out.println("Usage: " + CommandHelper.runMethod("usage", CommandHelper.getClassForCommand(command)));
System.out.println(" " + CommandHelper.runMethod("help", CommandHelper.getClassForCommand(command)));
} else {
System.out.println("Usage: " + usage());
System.out.println(" " + help());
}
return true;
}
}