677e63b79d
flutter start's method of finding devices to run the app on is not suitable for flutter drive. This commit also refactors several tool services to allow mocking in unit tests.
75 lines
2.2 KiB
Dart
75 lines
2.2 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:async';
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import 'dart:io';
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import 'context.dart';
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/// Returns [OperatingSystemUtils] active in the current app context (i.e. zone).
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OperatingSystemUtils get os => context[OperatingSystemUtils] ?? (context[OperatingSystemUtils] = new OperatingSystemUtils._());
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abstract class OperatingSystemUtils {
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factory OperatingSystemUtils._() {
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if (Platform.isWindows) {
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return new _WindowsUtils();
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} else {
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return new _PosixUtils();
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}
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}
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OperatingSystemUtils._private();
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String get operatingSystem => Platform.operatingSystem;
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bool get isMacOS => operatingSystem == 'macos';
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bool get isWindows => operatingSystem == 'windows';
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bool get isLinux => operatingSystem == 'linux';
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/// Make the given file executable. This may be a no-op on some platforms.
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ProcessResult makeExecutable(File file);
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/// Return the path (with symlinks resolved) to the given executable, or `null`
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/// if `which` was not able to locate the binary.
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File which(String execName);
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}
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class _PosixUtils extends OperatingSystemUtils {
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_PosixUtils() : super._private();
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ProcessResult makeExecutable(File file) {
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return Process.runSync('chmod', ['u+x', file.path]);
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}
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/// Return the path (with symlinks resolved) to the given executable, or `null`
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/// if `which` was not able to locate the binary.
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File which(String execName) {
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ProcessResult result = Process.runSync('which', <String>[execName]);
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if (result.exitCode != 0)
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return null;
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String path = result.stdout.trim().split('\n').first.trim();
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return new File(new File(path).resolveSymbolicLinksSync());
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}
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}
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class _WindowsUtils extends OperatingSystemUtils {
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_WindowsUtils() : super._private();
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// This is a no-op.
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ProcessResult makeExecutable(File file) {
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return new ProcessResult(0, 0, null, null);
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}
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File which(String execName) {
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throw new UnimplementedError('_WindowsUtils.which');
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}
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}
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Future<int> findAvailablePort() async {
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ServerSocket socket = await ServerSocket.bind(InternetAddress.LOOPBACK_IP_V4, 0);
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int port = socket.port;
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await socket.close();
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return port;
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}
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