rnystrom@google.com
180df4ec25
Review URL: https://chromiumcodereview.appspot.com//10857059 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10912 260f80e4-7a28-3924-810f-c04153c831b5
68 lines
2.1 KiB
Dart
68 lines
2.1 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('pubspec.dart');
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#import('source.dart');
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#import('version.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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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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String get rootDir() {
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if (_rootDir != null) return _rootDir;
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throw "Pub can't find the Dart SDK. Please set the DART_SDK environment "
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"variable to the Dart SDK directory.";
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}
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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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var version = new Version.parse("0.0.0-r.${revision.trim()}");
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return new Pubspec(version, <PackageRef>[]);
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});
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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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// Look in "pkg" first.
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var sourcePath = join(rootDir, "pkg", id.description);
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return exists(sourcePath).chain((found) {
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if (!found) {
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// TODO(rnystrom): Get rid of this when all SDK packages are moved from
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// "lib" to "pkg".
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// Not in "pkg", so try "lib".
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sourcePath = join(rootDir, "lib", id.description);
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return exists(sourcePath).chain((found) {
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if (!found) 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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return createSymlink(sourcePath, destPath).transform((_) => true);
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});
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}
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}
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