OLD | NEW |
| (Empty) |
1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 library pub.command.downgrade; | |
6 | |
7 import 'dart:async'; | |
8 | |
9 import '../command.dart'; | |
10 import '../log.dart' as log; | |
11 import '../solver/version_solver.dart'; | |
12 | |
13 /// Handles the `downgrade` pub command. | |
14 class DowngradeCommand extends PubCommand { | |
15 String get name => "downgrade"; | |
16 String get description => | |
17 "Downgrade the current package's dependencies to oldest versions.\n\n" | |
18 "This doesn't modify the lockfile, so it can be reset with \"pub get\"
."; | |
19 String get invocation => "pub downgrade [dependencies...]"; | |
20 | |
21 bool get isOffline => argResults['offline']; | |
22 | |
23 DowngradeCommand() { | |
24 argParser.addFlag( | |
25 'offline', | |
26 help: 'Use cached packages instead of accessing the network.'); | |
27 | |
28 argParser.addFlag( | |
29 'dry-run', | |
30 abbr: 'n', | |
31 negatable: false, | |
32 help: "Report what dependencies would change but don't change any."); | |
33 } | |
34 | |
35 Future run() { | |
36 final completer0 = new Completer(); | |
37 scheduleMicrotask(() { | |
38 try { | |
39 var dryRun = argResults['dry-run']; | |
40 new Future.value( | |
41 entrypoint.acquireDependencies( | |
42 SolveType.DOWNGRADE, | |
43 useLatest: argResults.rest, | |
44 dryRun: dryRun)).then((x0) { | |
45 try { | |
46 x0; | |
47 join0() { | |
48 completer0.complete(); | |
49 } | |
50 if (isOffline) { | |
51 log.warning( | |
52 "Warning: Downgrading when offline may not update you to " | |
53 "the oldest versions of your dependencies."); | |
54 join0(); | |
55 } else { | |
56 join0(); | |
57 } | |
58 } catch (e0, s0) { | |
59 completer0.completeError(e0, s0); | |
60 } | |
61 }, onError: completer0.completeError); | |
62 } catch (e, s) { | |
63 completer0.completeError(e, s); | |
64 } | |
65 }); | |
66 return completer0.future; | |
67 } | |
68 } | |
OLD | NEW |