Index: sdk/lib/_internal/pub/lib/src/cached_package.dart |
diff --git a/sdk/lib/_internal/pub/lib/src/cached_package.dart b/sdk/lib/_internal/pub/lib/src/cached_package.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3dc2323689f05d2129d69dae573afdb05c1837a1 |
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+++ b/sdk/lib/_internal/pub/lib/src/cached_package.dart |
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+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
+// for details. All rights reserved. Use of this source code is governed by a |
+// BSD-style license that can be found in the LICENSE file. |
+ |
+library pub.cached_package; |
+ |
+import 'package:path/path.dart' as p; |
+import 'package:yaml/yaml.dart'; |
+ |
+import 'barback/transformer_config.dart'; |
+import 'io.dart'; |
+import 'package.dart'; |
+import 'pubspec.dart'; |
+import 'version.dart'; |
+ |
+/// A [Package] whose `lib` directory has been precompiled and cached. |
+/// |
+/// When users of this class request path information about files that are |
+/// cached, this returns the cached information. It also wraps the package's |
+/// pubspec to report no transformers, since the transformations have all been |
+/// applied already. |
+class CachedPackage extends Package { |
+ /// The directory contianing the cached assets from this package. |
+ /// |
+ /// Although only `lib` is cached, this directory corresponds to the root of |
+ /// the package. The actual cached assets exist in `$_cacheDir/lib`. |
+ final String _cacheDir; |
+ |
+ /// Creates a new cached package wrapping [inner] with the cache at |
+ /// [_cacheDir]. |
+ CachedPackage(Package inner, this._cacheDir) |
+ : super(new _CachedPubspec(inner.pubspec), inner.dir); |
+ |
+ String path(String part1, [String part2, String part3, String part4, |
+ String part5, String part6, String part7]) { |
+ if (_pathInCache(part1)) { |
+ return p.join(_cacheDir, part1, part2, part3, part4, part5, part6, part7); |
+ } else { |
+ return super.path(part1, part2, part3, part4, part5, part6, part7); |
+ } |
+ } |
+ |
+ String relative(String path) { |
+ if (p.isWithin(path, _cacheDir)) return p.relative(path, from: _cacheDir); |
+ return super.relative(path); |
+ } |
+ |
+ /// This will include the cached, transformed versions of files if [beneath] |
+ /// is within a cached directory, but not otherwise. |
+ List<String> listFiles({String beneath, recursive: true}) { |
+ if (beneath == null) return super.listFiles(recursive: recursive); |
+ |
+ if (_pathInCache(beneath)) return listDir(p.join(_cacheDir, beneath)); |
+ return super.listFiles(beneath: beneath, recursive: recursive); |
+ } |
+ |
+ /// Returns whether [relativePath], a path relative to the package's root, |
+ /// is in a cached directory. |
+ bool _pathInCache(String relativePath) => p.isWithin('lib', relativePath); |
+} |
+ |
+/// A pubspec wrapper that reports no transformers. |
+class _CachedPubspec implements Pubspec { |
+ final Pubspec _inner; |
+ |
+ YamlMap get fields => _inner.fields; |
+ String get name => _inner.name; |
+ Version get version => _inner.version; |
+ List<PackageDep> get dependencies => _inner.dependencies; |
+ List<PackageDep> get devDependencies => _inner.devDependencies; |
+ List<PackageDep> get dependencyOverrides => _inner.dependencyOverrides; |
+ PubspecEnvironment get environment => _inner.environment; |
+ String get publishTo => _inner.publishTo; |
+ Map<String, String> get executables => _inner.executables; |
+ bool get isPrivate => _inner.isPrivate; |
+ bool get isEmpty => _inner.isEmpty; |
+ List<PubspecException> get allErrors => _inner.allErrors; |
+ |
+ List<Set<TransformerConfig>> get transformers => const []; |
+ |
+ _CachedPubspec(this._inner); |
+} |