// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

#library('command_help');

#import('pub.dart');

/** Handles the `help` pub command. */
class HelpCommand extends PubCommand {
  String get description() =>
    "display help information for Pub";

  String get usage() => 'pub help [command]';

  Future onRun() {
    if (commandOptions.rest.isEmpty()) {
      printUsage();
    } else {
      pubCommands[commandOptions.rest[0]].printUsage();
    }
  }
}