| // 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 barback.test.transformer.aggregate_many_to_many; |
| |
| import 'dart:async'; |
| |
| import 'package:barback/barback.dart'; |
| import 'package:path/path.dart' as path; |
| |
| import 'mock_aggregate.dart'; |
| |
| /// An [AggregateTransformer] that takes all assets with a given extension, |
| /// grouped by directory, adds to their contents. |
| class AggregateManyToManyTransformer extends MockAggregateTransformer { |
| /// The extension of assets to combine. |
| final String extension; |
| |
| AggregateManyToManyTransformer(this.extension); |
| |
| String doClassifyPrimary(AssetId id) { |
| if (id.extension != ".$extension") return null; |
| return path.url.dirname(id.path); |
| } |
| |
| Future doApply(AggregateTransform transform) { |
| return getPrimaryInputs(transform).asyncMap((asset) { |
| return asset.readAsString().then((contents) { |
| transform.addOutput(new Asset.fromString( |
| asset.id, "modified $contents")); |
| }); |
| }).toList(); |
| } |
| |
| String toString() => "aggregate $extension->many"; |
| } |