| // 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. |
| |
| // Do not add package imports to this file. |
| import 'dart:convert'; // ignore: dart_convert_import. |
| import 'dart:io'; // ignore: dart_io_import. |
| |
| /// Executes the required flutter tasks for a desktop build. |
| Future<void> main(List<String> arguments) async { |
| final String targetPlatform = arguments[0]; |
| final String buildMode = arguments[1].toLowerCase(); |
| |
| final String dartDefines = Platform.environment['DART_DEFINES']; |
| final bool dartObfuscation = Platform.environment['DART_OBFUSCATION'] == 'true'; |
| final String extraFrontEndOptions = Platform.environment['EXTRA_FRONT_END_OPTIONS']; |
| final String extraGenSnapshotOptions = Platform.environment['EXTRA_GEN_SNAPSHOT_OPTIONS']; |
| final String flutterEngine = Platform.environment['FLUTTER_ENGINE']; |
| final String flutterRoot = Platform.environment['FLUTTER_ROOT']; |
| final String flutterTarget = Platform.environment['FLUTTER_TARGET'] |
| ?? pathJoin(<String>['lib', 'main.dart']); |
| final String localEngine = Platform.environment['LOCAL_ENGINE']; |
| final String projectDirectory = Platform.environment['PROJECT_DIR']; |
| final String splitDebugInfo = Platform.environment['SPLIT_DEBUG_INFO']; |
| final String bundleSkSLPath = Platform.environment['BUNDLE_SKSL_PATH']; |
| final bool trackWidgetCreation = Platform.environment['TRACK_WIDGET_CREATION'] == 'true'; |
| final bool treeShakeIcons = Platform.environment['TREE_SHAKE_ICONS'] == 'true'; |
| final bool verbose = Platform.environment['VERBOSE_SCRIPT_LOGGING'] == 'true'; |
| |
| Directory.current = projectDirectory; |
| |
| if (localEngine != null && !localEngine.contains(buildMode)) { |
| stderr.write(''' |
| ERROR: Requested build with Flutter local engine at '$localEngine' |
| This engine is not compatible with FLUTTER_BUILD_MODE: '$buildMode'. |
| You can fix this by updating the LOCAL_ENGINE environment variable, or |
| by running: |
| flutter build <platform> --local-engine=host_$buildMode |
| or |
| flutter build <platform> --local-engine=host_${buildMode}_unopt |
| ======================================================================== |
| '''); |
| exit(1); |
| } |
| final String flutterExecutable = pathJoin(<String>[ |
| flutterRoot, |
| 'bin', |
| if (Platform.isWindows) |
| 'flutter.bat' |
| else |
| 'flutter' |
| ]); |
| final String bundlePlatform = targetPlatform == 'windows-x64' ? 'windows' : 'linux'; |
| final String target = '${buildMode}_bundle_${bundlePlatform}_assets'; |
| |
| final Process assembleProcess = await Process.start( |
| flutterExecutable, |
| <String>[ |
| if (verbose) |
| '--verbose', |
| if (flutterEngine != null) '--local-engine-src-path=$flutterEngine', |
| if (localEngine != null) '--local-engine=$localEngine', |
| 'assemble', |
| '--output=build', |
| '-dTargetPlatform=$targetPlatform', |
| '-dTrackWidgetCreation=$trackWidgetCreation', |
| '-dBuildMode=$buildMode', |
| '-dTargetFile=$flutterTarget', |
| '-dTreeShakeIcons="$treeShakeIcons"', |
| '-dDartObfuscation=$dartObfuscation', |
| if (bundleSkSLPath != null) |
| '-iBundleSkSLPath=$bundleSkSLPath', |
| if (splitDebugInfo != null) |
| '-dSplitDebugInfo=$splitDebugInfo', |
| if (dartDefines != null) |
| '--DartDefines=$dartDefines', |
| if (extraGenSnapshotOptions != null) |
| '--ExtraGenSnapshotOptions=$extraGenSnapshotOptions', |
| if (extraFrontEndOptions != null) |
| '--ExtraFrontEndOptions=$extraFrontEndOptions', |
| target, |
| ], |
| ); |
| assembleProcess.stdout |
| .transform(utf8.decoder) |
| .transform(const LineSplitter()) |
| .listen(stdout.writeln); |
| assembleProcess.stderr |
| .transform(utf8.decoder) |
| .transform(const LineSplitter()) |
| .listen(stderr.writeln); |
| |
| if (await assembleProcess.exitCode != 0) { |
| exit(1); |
| } |
| } |
| |
| /// Perform a simple path join on the segments based on the current platform. |
| /// |
| /// Does not normalize paths that have repeated separators. |
| String pathJoin(List<String> segments) { |
| final String separator = Platform.isWindows ? r'\' : '/'; |
| return segments.join(separator); |
| } |