Refactor Source and SourceRegistry.

lib/src/command/lish.dart

 // 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.
 
 import 'dart:async';
 
 import 'package:http/http.dart' as http;
 
 import '../command.dart';
 import '../exit_codes.dart' as exit_codes;
 import '../ascii_tree.dart' as tree;
 import '../http.dart';
 import '../io.dart';
 import '../log.dart' as log;
 import '../oauth2.dart' as oauth2;
-import '../source/hosted.dart';
 import '../utils.dart';
 import '../validator.dart';
 
 /// Handles the `lish` and `publish` pub commands.
 class LishCommand extends PubCommand {
   String get name => "publish";
   String get description => "Publish the current package to pub.dartlang.org.";
   String get invocation => "pub publish [options]";
   String get docUrl => "http://dartlang.org/tools/pub/cmd/pub-lish.html";
   List<String> get aliases => const ["lish", "lush"];
   bool get takesArguments => false;
 
   /// The URL of the server to which to upload the package.
   Uri get server {
     // An explicit argument takes precedence.
     if (argResults.wasParsed('server')) {
       return Uri.parse(argResults['server']);
     }
 
     // Otherwise, use the one specified in the pubspec.
     if (entrypoint.root.pubspec.publishTo != null) {
       return Uri.parse(entrypoint.root.pubspec.publishTo);
     }
 
     // Otherwise, use the default.
-    return Uri.parse(HostedSource.defaultUrl);
+    return Uri.parse(cache.sources.hosted.defaultUrl);
   }
 
   /// Whether the publish is just a preview.
   bool get dryRun => argResults['dry-run'];
 
   /// Whether the publish requires confirmation.
   bool get force => argResults['force'];
 
   LishCommand() {
     argParser.addFlag('dry-run', abbr: 'n', negatable: false,
         help: 'Validate but do not publish the package.');
     argParser.addFlag('force', abbr: 'f', negatable: false,
         help: 'Publish without confirmation if there are no errors.');
-    argParser.addOption('server', defaultsTo: HostedSource.defaultUrl,
+    argParser.addOption('server', defaultsTo: cache.sources.hosted.defaultUrl,
         help: 'The package server to which to upload this package.');
   }
 
   Future _publish(packageBytes) async {
     var cloudStorageUrl;
     try {
       await oauth2.withClient(cache, (client) {
         return log.progress('Uploading', () async {
           // TODO(nweiz): Cloud Storage can provide an XML-formatted error. We
           // should report that error and exit.
@@ skipping 113 matching lines @@
     }
 
     var confirmed = await confirm(message);
     if (!confirmed) {
       log.error("Package upload canceled.");
       return false;
     }
     return true;
   }
 }