| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:meta/meta.dart'; |
| import 'package:yaml/yaml.dart'; |
| |
| import '../base/common.dart'; |
| import '../base/file_system.dart'; |
| import '../build_system/build_system.dart'; |
| import '../build_system/targets/localizations.dart'; |
| |
| Future<void> generateLocalizationsSyntheticPackage({ |
| @required Environment environment, |
| @required BuildSystem buildSystem, |
| }) async { |
| assert(environment != null); |
| assert(buildSystem != null); |
| |
| final FileSystem fileSystem = environment.fileSystem; |
| final File l10nYamlFile = fileSystem.file( |
| fileSystem.path.join(environment.projectDir.path, 'l10n.yaml')); |
| |
| // If pubspec.yaml has generate:true and if l10n.yaml exists in the |
| // root project directory, check to see if a synthetic package should |
| // be generated for gen_l10n. |
| if (!l10nYamlFile.existsSync()) { |
| return; |
| } |
| |
| final YamlNode yamlNode = loadYamlNode(l10nYamlFile.readAsStringSync()); |
| if (yamlNode.value != null && yamlNode is! YamlMap) { |
| throwToolExit( |
| 'Expected ${l10nYamlFile.path} to contain a map, instead was $yamlNode' |
| ); |
| } |
| |
| BuildResult result; |
| // If an l10n.yaml file exists but is empty, attempt to build synthetic |
| // package with default settings. |
| if (yamlNode.value == null) { |
| result = await buildSystem.build( |
| const GenerateLocalizationsTarget(), |
| environment, |
| ); |
| } else { |
| final YamlMap yamlMap = yamlNode as YamlMap; |
| final Object value = yamlMap['synthetic-package']; |
| if (value is! bool && value != null) { |
| throwToolExit( |
| 'Expected "synthetic-package" to have a bool value, ' |
| 'instead was "$value"' |
| ); |
| } |
| |
| // Generate gen_l10n synthetic package only if synthetic-package: true or |
| // synthetic-package is null. |
| final bool isSyntheticL10nPackage = value as bool ?? true; |
| if (!isSyntheticL10nPackage) { |
| return; |
| } |
| } |
| |
| result = await buildSystem.build( |
| const GenerateLocalizationsTarget(), |
| environment, |
| ); |
| |
| if (result == null || result.hasException) { |
| throwToolExit('Generating synthetic localizations package has failed.'); |
| } |
| } |