rnystrom@google.com
26e59cf859
It would crash in a few cases if you didn't pass in a valid command Also fixed a few unrelated warnings since a warning we learned to ignore was masking the original issue. :( Review URL: https://codereview.chromium.org//11363249 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@14927 260f80e4-7a28-3924-810f-c04153c831b5
34 lines
981 B
Dart
34 lines
981 B
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library command_help;
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import 'dart:io' as io;
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import 'exit_codes.dart' as exit_codes;
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import 'io.dart';
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import 'pub.dart';
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/** Handles the `help` pub command. */
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class HelpCommand extends PubCommand {
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String get description => "display help information for Pub";
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String get usage => 'pub help [command]';
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bool get requiresEntrypoint => false;
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Future onRun() {
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if (commandOptions.rest.isEmpty) {
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printUsage();
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} else {
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var name = commandOptions.rest[0];
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var command = pubCommands[name];
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if (command == null) {
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printError('Could not find a command named "$name".');
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printError('Run "pub help" to see available commands.');
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io.exit(exit_codes.USAGE);
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}
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command.printUsage();
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}
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}
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}
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