nweiz@google.com
b2ee421a78
Review URL: https://chromiumcodereview.appspot.com//10690127 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9567 260f80e4-7a28-3924-810f-c04153c831b5
50 lines
1.5 KiB
Dart
50 lines
1.5 KiB
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('sdk_source');
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#import('io.dart');
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#import('package.dart');
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#import('source.dart');
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/**
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* A package source that uses libraries from the Dart SDK.
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*
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* This currently uses the "sdkdir" command-line argument to find the SDK.
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*/
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// TODO(nweiz): This should read the SDK directory from an environment variable
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// once we can set those for tests.
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class SdkSource extends Source {
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final String name = "sdk";
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final bool shouldCache = false;
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/**
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* The root directory of the Dart SDK.
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*/
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final String rootDir;
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SdkSource(this.rootDir);
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/**
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* An SDK package has no dependencies. Its version number is inferred from the
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* revision number of the SDK itself.
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*/
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Future<Pubspec> describe(PackageId id) {
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return readTextFile(join(rootDir, "revision")).transform((revision) =>
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new Pubspec("0.0.0-r.${revision.trim()}", <PackageRef>[]));
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}
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/**
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* Since all the SDK files are already available locally, installation just
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* involves symlinking the SDK library into the packages directory.
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*/
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Future<bool> install(PackageId id, String destPath) {
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var sourcePath = join(rootDir, "lib", id.description);
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return exists(sourcePath).chain((exists) {
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if (!exists) return new Future<bool>.immediate(false);
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return createSymlink(sourcePath, destPath).transform((_) => true);
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});
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}
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}
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