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| 1 // Copyright (c) 2014, 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.cache_add; | |
| 6 | |
| 7 import 'dart:async'; | |
| 8 | |
| 9 import 'package:pub_semver/pub_semver.dart'; | |
| 10 | |
| 11 import '../command.dart'; | |
| 12 import '../log.dart' as log; | |
| 13 import '../package.dart'; | |
| 14 import '../utils.dart'; | |
| 15 | |
| 16 /// Handles the `cache add` pub command. | |
| 17 class CacheAddCommand extends PubCommand { | |
| 18 String get name => "add"; | |
| 19 String get description => "Install a package."; | |
| 20 String get invocation => | |
| 21 "pub cache add <package> [--version <constraint>] [--all]"; | |
| 22 String get docUrl => "http://dartlang.org/tools/pub/cmd/pub-cache.html"; | |
| 23 | |
| 24 CacheAddCommand() { | |
| 25 argParser.addFlag( | |
| 26 "all", | |
| 27 help: "Install all matching versions.", | |
| 28 negatable: false); | |
| 29 | |
| 30 argParser.addOption("version", abbr: "v", help: "Version constraint."); | |
| 31 } | |
| 32 | |
| 33 Future run() { | |
| 34 // Make sure there is a package. | |
| 35 if (argResults.rest.isEmpty) { | |
| 36 usageException("No package to add given."); | |
| 37 } | |
| 38 | |
| 39 // Don't allow extra arguments. | |
| 40 if (argResults.rest.length > 1) { | |
| 41 var unexpected = argResults.rest.skip(1).map((arg) => '"$arg"'); | |
| 42 var arguments = pluralize("argument", unexpected.length); | |
| 43 usageException("Unexpected $arguments ${toSentence(unexpected)}."); | |
| 44 } | |
| 45 | |
| 46 var package = argResults.rest.single; | |
| 47 | |
| 48 // Parse the version constraint, if there is one. | |
| 49 var constraint = VersionConstraint.any; | |
| 50 if (argResults["version"] != null) { | |
| 51 try { | |
| 52 constraint = new VersionConstraint.parse(argResults["version"]); | |
| 53 } on FormatException catch (error) { | |
| 54 usageException(error.message); | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 // TODO(rnystrom): Support installing from git too. | |
| 59 var source = cache.sources["hosted"]; | |
| 60 | |
| 61 // TODO(rnystrom): Allow specifying the server. | |
| 62 return source.getVersions(package, package).then((versions) { | |
| 63 versions = versions.where(constraint.allows).toList(); | |
| 64 | |
| 65 if (versions.isEmpty) { | |
| 66 // TODO(rnystrom): Show most recent unmatching version? | |
| 67 fail("Package $package has no versions that match $constraint."); | |
| 68 } | |
| 69 | |
| 70 downloadVersion(Version version) { | |
| 71 var id = new PackageId(package, source.name, version, package); | |
| 72 return cache.contains(id).then((contained) { | |
| 73 if (contained) { | |
| 74 // TODO(rnystrom): Include source and description if not hosted. | |
| 75 // See solve_report.dart for code to harvest. | |
| 76 log.message("Already cached ${id.name} ${id.version}."); | |
| 77 return null; | |
| 78 } | |
| 79 | |
| 80 // Download it. | |
| 81 return source.downloadToSystemCache(id); | |
| 82 }); | |
| 83 } | |
| 84 | |
| 85 if (argResults["all"]) { | |
| 86 // Install them in ascending order. | |
| 87 versions.sort(); | |
| 88 return Future.forEach(versions, downloadVersion); | |
| 89 } else { | |
| 90 // Pick the best matching version. | |
| 91 versions.sort(Version.prioritize); | |
| 92 return downloadVersion(versions.last); | |
| 93 } | |
| 94 }); | |
| 95 } | |
| 96 } | |
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Chromium Code Reviews
Issue 937243002:
Revert "Revert "Use native async/await support in pub."" (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart