| library pub.command.cache_add; |
| import 'dart:async'; |
| import '../command.dart'; |
| import '../log.dart' as log; |
| import '../package.dart'; |
| import '../utils.dart'; |
| import '../version.dart'; |
| class CacheAddCommand extends PubCommand { |
| String get description => "Install a package."; |
| String get usage => |
| "pub cache add <package> [--version <constraint>] [--all]"; |
| String get docUrl => "http://dartlang.org/tools/pub/cmd/pub-cache.html"; |
| bool get takesArguments => true; |
| CacheAddCommand() { |
| commandParser.addFlag( |
| "all", |
| help: "Install all matching versions.", |
| negatable: false); |
| commandParser.addOption("version", abbr: "v", help: "Version constraint."); |
| } |
| Future onRun() { |
| if (commandOptions.rest.isEmpty) { |
| usageError("No package to add given."); |
| } |
| if (commandOptions.rest.length > 1) { |
| var unexpected = commandOptions.rest.skip(1).map((arg) => '"$arg"'); |
| var arguments = pluralize("argument", unexpected.length); |
| usageError("Unexpected $arguments ${toSentence(unexpected)}."); |
| } |
| var package = commandOptions.rest.single; |
| var constraint = VersionConstraint.any; |
| if (commandOptions["version"] != null) { |
| try { |
| constraint = new VersionConstraint.parse(commandOptions["version"]); |
| } on FormatException catch (error) { |
| usageError(error.message); |
| } |
| } |
| var source = cache.sources["hosted"]; |
| return source.getVersions(package, package).then((versions) { |
| versions = versions.where(constraint.allows).toList(); |
| if (versions.isEmpty) { |
| fail("Package $package has no versions that match $constraint."); |
| } |
| downloadVersion(Version version) { |
| var id = new PackageId(package, source.name, version, package); |
| return cache.contains(id).then((contained) { |
| if (contained) { |
| log.message("Already cached ${id.name} ${id.version}."); |
| return null; |
| } |
| return source.downloadToSystemCache(id); |
| }); |
| } |
| if (commandOptions["all"]) { |
| versions.sort(); |
| return Future.forEach(versions, downloadVersion); |
| } else { |
| versions.sort(Version.prioritize); |
| return downloadVersion(versions.last); |
| } |
| }); |
| } |
| } |