unfork DDC's copy of most SDK libraries

pkg/dev_compiler/tool/input_sdk/lib/io/platform.dart

Index: pkg/dev_compiler/tool/input_sdk/lib/io/platform.dart
diff --git a/pkg/dev_compiler/tool/input_sdk/lib/io/platform.dart b/pkg/dev_compiler/tool/input_sdk/lib/io/platform.dart
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-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-part of dart.io;
-
-/**
- * Information about the environment in which the current program is running.
- *
- * Platform provides information such as the operating system,
- * the hostname of the computer, the value of environment variables,
- * the path to the running program,
- * and so on.
- *
- * ## Get the URI to the current Dart script
- *
- * Use the [script] getter to get the URI to the currently running
- * Dart script.
- *
- *     import 'dart:io' show Platform;
- *
- *     void main() {
- *       // Get the URI of the script being run.
- *       var uri = Platform.script;
- *       // Convert the URI to a path.
- *       var path = uri.toFilePath();
- *     }
- *
- * ## Get the value of an environment variable
- *
- * The [environment] getter returns a the names and values of environment
- * variables in a [Map] that contains key-value pairs of strings. The Map is
- * unmodifiable. This sample shows how to get the value of the `PATH`
- * environment variable.
- *
- *     import 'dart:io' show Platform;
- *
- *     void main() {
- *       Map<String, String> envVars = Platform.environment;
- *       print(envVars['PATH']);
- *     }
- *
- * ## Determine the OS
- *
- * You can get the name of the operating system as a string with the
- * [operatingSystem] getter. You can also use one of the static boolean
- * getters: [isMacOS], [isLinux], and [isWindows].
- *
- *     import 'dart:io' show Platform, stdout;
- *
- *     void main() {
- *       // Get the operating system as a string.
- *       String os = Platform.operatingSystem;
- *       // Or, use a predicate getter.
- *       if (Platform.isMacOS) {
- *         print('is a Mac');
- *       } else {
- *         print('is not a Mac');
- *       }
- *     }
- *
- * ## Other resources
- *
- * [Dart by Example](https://www.dartlang.org/dart-by-example/#dart-io-and-command-line-apps)
- * provides additional task-oriented code samples that show how to use
- * various API from the [dart:io] library.
- */
-class Platform {
-  static final _numberOfProcessors = _Platform.numberOfProcessors;
-  static final _pathSeparator = _Platform.pathSeparator;
-  static final _operatingSystem = _Platform.operatingSystem;
-  static final _localHostname = _Platform.localHostname;
-  static final _version = _Platform.version;
-
-  /**
-   * Get the number of processors of the machine.
-   */
-  static int get numberOfProcessors => _numberOfProcessors;
-
-  /**
-   * Get the path separator used by the operating system to separate
-   * components in file paths.
-   */
-  static String get pathSeparator => _pathSeparator;
-
-  /**
-   * Get a string (`linux`, `macos`, `windows`, `android`, or `ios`)
-   * representing the operating system.
-   */
-  static String get operatingSystem => _operatingSystem;
-
-  /**
-   * Get the local hostname for the system.
-   */
-  static String get localHostname => _localHostname;
-
-  /**
-   * Returns true if the operating system is Linux.
-   */
-  static final bool isLinux = (_operatingSystem == "linux");
-
-  /**
-   * Returns true if the operating system is OS X.
-   */
-  static final bool isMacOS = (_operatingSystem == "macos");
-
-  /**
-   * Returns true if the operating system is Windows.
-   */
-  static final bool isWindows = (_operatingSystem == "windows");
-
-  /**
-   * Returns true if the operating system is Android.
-   */
-  static final bool isAndroid = (_operatingSystem == "android");
-
-  /**
-   * Returns true if the operating system is iOS.
-   */
-  static final bool isIOS = (_operatingSystem == "ios");
-
-  /**
-   * Get the environment for this process.
-   *
-   * The returned environment is an unmodifiable map which content is
-   * retrieved from the operating system on its first use.
-   *
-   * Environment variables on Windows are case-insensitive. The map
-   * returned on Windows is therefore case-insensitive and will convert
-   * all keys to upper case. On other platforms the returned map is
-   * a standard case-sensitive map.
-   */
-  static Map<String, String> get environment => _Platform.environment;
-
-  /**
-   * Returns the path of the executable used to run the script in this
-   * isolate.
-   *
-   * The path returned is the literal path used to run the script. This
-   * path might be relative or just be a name from which the executable
-   * was found by searching the `PATH`.
-   *
-   * To get the absolute path to the resolved executable use
-   * [resolvedExecutable].
-   */
-  static String get executable => _Platform.executable;
-
-  /**
-   * Returns the path of the executable used to run the script in this
-   * isolate after it has been resolved by the OS.
-   *
-   * This is the absolute path, with all symlinks resolved, to the
-   * executable used to run the script.
-   */
-  static String get resolvedExecutable => _Platform.resolvedExecutable;
-
-  /**
-   * Returns the absolute URI of the script being run in this
-   * isolate.
-   *
-   * If the script argument on the command line is relative,
-   * it is resolved to an absolute URI before fetching the script, and
-   * this absolute URI is returned.
-   *
-   * URI resolution only does string manipulation on the script path, and this
-   * may be different from the file system's path resolution behavior. For
-   * example, a symbolic link immediately followed by '..' will not be
-   * looked up.
-   *
-   * If the executable environment does not support [script] an empty
-   * [Uri] is returned.
-   */
-  static Uri get script => _Platform.script;
-
-  /**
-   * Returns the flags passed to the executable used to run the script in this
-   * isolate. These are the command-line flags between the executable name
-   * and the script name. Each fetch of executableArguments returns a new
-   * List, containing the flags passed to the executable.
-   */
-  static List<String> get executableArguments => _Platform.executableArguments;
-
-  /**
-   * Returns the value of the `--package-root` flag passed to the executable
-   * used to run the script in this isolate.  This is the directory in which
-   * Dart packages are looked up.
-   *
-   * If there is no `--package-root` flag, `null` is returned.
-   */
-  static String get packageRoot => _Platform.packageRoot;
-
-/**
- * Returns the value of the `--packages` flag passed to the executable
- * used to run the script in this isolate. This is the configuration which
- * specifies how Dart packages are looked up.
- *
- * If there is no `--packages` flag, `null` is returned.
- */
-  static String get packageConfig => _Platform.packageConfig;
-
-  /**
-   * Returns the version of the current Dart runtime.
-   *
-   * The returned `String` is formatted as the
-   * [semver](http://semver.org) version string of the current dart
-   * runtime, possibly followed by whitespace and other version and
-   * build details.
-   */
-  static String get version => _version;
-}