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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library barback.test.transformer.check_content_and_rename; | 5 library barback.test.transformer.check_content_and_rename; |
6 | 6 |
7 import 'dart:async'; | 7 import 'dart:async'; |
8 | 8 |
9 import 'package:barback/barback.dart'; | 9 import 'package:barback/barback.dart'; |
10 | 10 |
11 import 'mock.dart'; | 11 import 'mock.dart'; |
12 | 12 |
13 /// A transformer that checks the extension and content of an asset, then | 13 /// A transformer that checks the extension and content of an asset, then |
14 /// produces a new asset with a new extension and new content. | 14 /// produces a new asset with a new extension and new content. |
15 class CheckContentAndRenameTransformer extends MockTransformer { | 15 class CheckContentAndRenameTransformer extends MockTransformer { |
16 final String oldExtension; | 16 final String oldExtension; |
17 final String oldContent; | 17 final String oldContent; |
18 final String newExtension; | 18 final String newExtension; |
19 final String newContent; | 19 final String newContent; |
20 | 20 |
21 CheckContentAndRenameTransformer(this.oldExtension, this.oldContent, | 21 CheckContentAndRenameTransformer(this.oldExtension, this.oldContent, |
22 this.newExtension, this.newContent); | 22 this.newExtension, this.newContent); |
23 | 23 |
24 Future<bool> doIsPrimary(Asset asset) { | 24 Future<bool> doIsPrimary(AssetId id) => |
25 if (asset.id.extension != '.$oldExtension') return new Future.value(false); | 25 new Future.value(id.extension != '.$oldExtension'); |
26 return asset.readAsString().then((value) => value == oldContent); | |
27 } | |
28 | 26 |
29 Future doApply(Transform transform) { | 27 Future doApply(Transform transform) { |
30 return getPrimary(transform).then((input) { | 28 return getPrimary(transform).then((input) { |
31 transform.addOutput(new Asset.fromString( | 29 return input.readAsString().then((contents) { |
32 input.id.changeExtension('.$newExtension'), newContent)); | 30 if (contents != oldContent) return; |
| 31 |
| 32 transform.addOutput(new Asset.fromString( |
| 33 input.id.changeExtension('.$newExtension'), newContent)); |
| 34 }); |
33 }); | 35 }); |
34 } | 36 } |
35 } | 37 } |
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