[fuchsia] remove fuchsia_attach as it is no longer being used (#92272)

packages/flutter_tools/bin/fuchsia_attach.dart

-// 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.
-
-// @dart = 2.8
-
-import 'package:args/args.dart';
-
-import 'package:flutter_tools/runner.dart' as runner;
-import 'package:flutter_tools/src/artifacts.dart';
-import 'package:flutter_tools/src/base/common.dart';
-import 'package:flutter_tools/src/base/context.dart';
-import 'package:flutter_tools/src/base/file_system.dart';
-import 'package:flutter_tools/src/cache.dart';
-import 'package:flutter_tools/src/commands/attach.dart';
-import 'package:flutter_tools/src/commands/doctor.dart';
-import 'package:flutter_tools/src/device.dart';
-import 'package:flutter_tools/src/features.dart';
-import 'package:flutter_tools/src/fuchsia/fuchsia_device.dart';
-import 'package:flutter_tools/src/fuchsia/fuchsia_sdk.dart';
-import 'package:flutter_tools/src/fuchsia/fuchsia_workflow.dart';
-import 'package:flutter_tools/src/globals_null_migrated.dart' as globals;
-import 'package:flutter_tools/src/project.dart';
-import 'package:flutter_tools/src/runner/flutter_command.dart';
-
-final ArgParser parser = ArgParser()
-  ..addOption('build-dir', help: 'The fuchsia build directory')
-  ..addOption('dart-sdk', help: 'The prebuilt dart SDK')
-  ..addOption('target', help: 'The GN target to attach to')
-  ..addOption('entrypoint', defaultsTo: 'main.dart', help: 'The filename of the main method. Defaults to main.dart')
-  ..addOption('device', help: 'The device id to attach to')
-  ..addOption('ffx', help: 'The location of the ffx binary')
-  ..addFlag('verbose', negatable: true);
-
-// Track the original working directory so that the tool can find the
-// flutter repo in third_party.
-String originalWorkingDirectory;
-
-Future<void> main(List<String> args) async {
-  final ArgResults argResults = parser.parse(args);
-  final bool verbose = argResults['verbose'] as bool;
-  final String target = argResults['target'] as String;
-  final List<String> targetParts = _extractPathAndName(target);
-  final String path = targetParts[0];
-  final String name = targetParts[1];
-  final File dartSdk = globals.fs.file(argResults['dart-sdk']);
-  final String buildDirectory = argResults['build-dir'] as String;
-  final File frontendServer = globals.fs.file('$buildDirectory/host_x64/gen/third_party/flutter/frontend_server/frontend_server_tool.snapshot');
-  final File sshConfig = globals.fs.file('$buildDirectory/ssh-keys/ssh_config');
-  final File ffx = globals.fs.file(argResults['ffx']);
-  final File platformKernelDill = globals.fs.file('$buildDirectory/flutter_runner_patched_sdk/platform_strong.dill');
-  final File flutterPatchedSdk = globals.fs.file('$buildDirectory/flutter_runner_patched_sdk');
-  final String packages = '$buildDirectory/dartlang/gen/$path/${name}_dart_library.packages';
-  final String outputDill = '$buildDirectory/${name}_tmp.dill';
-
-  // Running from fuchsia root hangs hot reload for some reason.
-  // switch to the project root directory and run from there.
-  originalWorkingDirectory = globals.fs.currentDirectory.path;
-  globals.fs.currentDirectory = path;
-
-  if (!ffx.existsSync()) {
-    print('Error: ffx not found at ${ffx.path}.');
-    return 1;
-  }
-  if (!frontendServer.existsSync()) {
-    print(
-      'Error: frontend_server not found at ${frontendServer.path}. This '
-      'Usually means you ran fx set without specifying '
-      '--args=flutter_profile=true.'
-    );
-    return 1;
-  }
-
-  // Check for a package with a lib directory.
-  final String entrypoint = argResults['entrypoint'] as String;
-  String targetFile = 'lib/$entrypoint';
-  if (!globals.fs.file(targetFile).existsSync()) {
-    // Otherwise assume the package is flat.
-    targetFile = entrypoint;
-  }
-  final String deviceName = argResults['device'] as String;
-  final List<String> command = <String>[
-    'attach',
-    '--module',
-    name,
-    '--target',
-    targetFile,
-    '--target-model',
-    'flutter_runner',
-    '--output-dill',
-    outputDill,
-    '--packages',
-    packages,
-    if (deviceName != null && deviceName.isNotEmpty) ...<String>['-d', deviceName],
-    if (verbose) '--verbose',
-  ];
-  Cache.disableLocking(); // ignore: invalid_use_of_visible_for_testing_member
-  await runner.run(
-    command,
-    () => <FlutterCommand>[
-      _FuchsiaAttachCommand(),
-      _FuchsiaDoctorCommand(), // If attach fails the tool will attempt to run doctor.
-    ],
-    verbose: verbose,
-    overrides: <Type, Generator>{
-      FeatureFlags: () => const _FuchsiaFeatureFlags(),
-      DeviceManager: () => _FuchsiaDeviceManager(),
-      FuchsiaArtifacts: () => FuchsiaArtifacts(
-        sshConfig: sshConfig, ffx: ffx),
-      Artifacts: () => OverrideArtifacts(
-        parent: CachedArtifacts(
-          fileSystem: globals.fs,
-          cache: globals.cache,
-          platform: globals.platform,
-          operatingSystemUtils: globals.os,
-        ),
-        frontendServer: frontendServer,
-        engineDartBinary: dartSdk,
-        platformKernelDill: platformKernelDill,
-        flutterPatchedSdk: flutterPatchedSdk,
-      ),
-    },
-  );
-}
-
-// An implementation of [DeviceManager] that only supports fuchsia devices.
-class _FuchsiaDeviceManager extends DeviceManager {
-  @override
-  List<DeviceDiscovery> get deviceDiscoverers => List<DeviceDiscovery>.unmodifiable(<DeviceDiscovery>[
-    FuchsiaDevices(
-      logger: globals.logger,
-      platform: globals.platform,
-      fuchsiaWorkflow: fuchsiaWorkflow,
-      fuchsiaSdk: fuchsiaSdk,
-    ),
-  ]);
-
-  @override
-  bool isDeviceSupportedForProject(Device device, FlutterProject flutterProject) {
-    return true;
-  }
-}
-
-List<String> _extractPathAndName(String gnTarget) {
-  // Separate strings like //path/to/target:app into [path/to/target, app]
-  final int lastColon = gnTarget.lastIndexOf(':');
-  if (lastColon < 0) {
-    throwToolExit('invalid path: $gnTarget');
-  }
-  final String name = gnTarget.substring(lastColon + 1);
-  // Skip '//' and chop off after :
-  if ((gnTarget.length < 3) || (gnTarget[0] != '/') || (gnTarget[1] != '/')) {
-    throwToolExit('invalid path: $gnTarget');
-  }
-  final String path = gnTarget.substring(2, lastColon);
-  return <String>[path, name];
-}
-
-class _FuchsiaDoctorCommand extends DoctorCommand {
-  @override
-  Future<FlutterCommandResult> runCommand() async {
-    Cache.flutterRoot = '$originalWorkingDirectory/third_party/dart-pkg/git/flutter';
-    return super.runCommand();
-  }
-}
-
-class _FuchsiaAttachCommand extends AttachCommand {
-  @override
-  Future<FlutterCommandResult> runCommand() async {
-    Cache.flutterRoot = '$originalWorkingDirectory/third_party/dart-pkg/git/flutter';
-    return super.runCommand();
-  }
-}
-
-class _FuchsiaFeatureFlags extends FeatureFlags {
-  const _FuchsiaFeatureFlags();
-
-  @override
-  bool get isLinuxEnabled => false;
-
-  @override
-  bool get isMacOSEnabled => false;
-
-  @override
-  bool get isWebEnabled => false;
-
-  @override
-  bool get isWindowsEnabled => false;
-
-  @override
-  bool get isAndroidEnabled => false;
-
-  @override
-  bool get isIOSEnabled => false;
-
-  @override
-  bool get isFuchsiaEnabled => true;
-
-  @override
-  bool get isSingleWidgetReloadEnabled => false;
-}