Initial import, as-is

packages/platform/.gitignore

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+### Dart template
+# Don’t commit the following directories created by pub.
+.buildlog
+.dart_tool/
+.pub/
+build/
+packages
+.packages
+
+# Include when developing application packages.
+pubspec.lock
+
+# IDE
+.project
+.settings
+.idea
+.c9

packages/platform/AUTHORS

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+# Below is a list of people and organizations that have contributed
+# to the Process project. Names should be added to the list like so:
+#
+#   Name/Organization <email address>
+
+Google Inc.

packages/platform/CHANGELOG.md

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+### 3.1.0
+
+* Removed `Platform.packageRoot`, which was already marked deprecated, and which
+  didn't work in Dart 2.
+
+### 3.0.2
+
+* Added `FakePlatform.copyWith` function.
+
+### 3.0.1
+
+* Added string constants for each of the supported platforms for use in switch
+  statements.
+
+### 3.0.0
+
+* First stable null safe release.
+
+### 3.0.0-nullsafety.4
+
+* Update supported SDK range.
+
+### 3.0.0-nullsafety.3
+
+* Update supported SDK range.
+
+### 3.0.0-nullsafety.2
+
+* Update supported SDK range.
+
+### 3.0.0-nullsafety.1
+
+* Migrate package to null-safe dart.
+
+### 2.2.1
+
+* Add `operatingSystemVersion`
+
+### 2.2.0
+
+* Declare compatibility with Dart 2 stable
+* Update dependency on `package:test` to 1.0
+
+### 2.1.2
+
+* Relax sdk upper bound constraint to  '<2.0.0' to allow 'edge' dart sdk use.
+
+### 2.1.1
+
+* Bumped maximum Dart SDK version to 2.0.0-dev.infinity
+
+### 2.1.0
+
+* Added `localeName`
+* Bumped minimum Dart SDK version to 1.24.0-dev.0.0
+
+### 2.0.0
+
+* Added `stdinSupportsAnsi` and `stdinSupportsAnsi`
+* Removed `ansiSupported`
+
+### 1.1.1
+
+* Updated `LocalPlatform` to use new `dart.io` API for ansi color support queries
+* Bumped minimum Dart SDK version to 1.23.0-dev.10.0
+
+### 1.1.0
+
+* Added `ansiSupported`
+* Bumped minimum Dart SDK version to 1.23.0-dev.9.0
+
+#### 1.0.2
+
+* Minor doc updates
+
+#### 1.0.1
+
+* Added const constructors for `Platform` and `LocalPlatform`
+
+#### 1.0.0
+
+* Initial version

packages/platform/CONTRIBUTING.md

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+# How to contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution,
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult [GitHub Help] for more
+information on using pull requests.
+
+[GitHub Help]: https://help.github.com/articles/about-pull-requests/

packages/platform/LICENSE

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+Copyright 2017, the Dart project authors. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google Inc. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

packages/platform/README.md

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+[![Pub](https://img.shields.io/pub/v/platform.svg)](https://pub.dartlang.org/packages/platform)
+
+A generic platform abstraction for Dart.
+
+Like `dart:io`, `package:platform` supplies a rich, Dart-idiomatic API for
+accessing platform-specific information.
+
+`package:platform` provides a lightweight wrapper around the static `Platform`
+properties that exist in `dart:io`. However, it uses instance properties rather
+than static properties, making it possible to mock out in tests.

packages/platform/analysis_options.yaml

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+include: package:lints/recommended.yaml
+
+analyzer:
+  errors:
+    # Allow having TODOs in the code
+    todo: ignore

packages/platform/lib/platform.dart

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+// Copyright (c) 2017, 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.
+
+/// Core interfaces & classes.
+export 'src/interface/local_platform.dart';
+export 'src/interface/platform.dart';
+export 'src/testing/fake_platform.dart';

packages/platform/lib/src/interface/local_platform.dart

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+// Copyright (c) 2017, 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.
+
+import 'dart:io' as io show Platform, stdin, stdout;
+
+import 'platform.dart';
+
+/// `Platform` implementation that delegates directly to `dart:io`.
+class LocalPlatform extends Platform {
+  /// Creates a new [LocalPlatform].
+  const LocalPlatform();
+
+  @override
+  int get numberOfProcessors => io.Platform.numberOfProcessors;
+
+  @override
+  String get pathSeparator => io.Platform.pathSeparator;
+
+  @override
+  String get operatingSystem => io.Platform.operatingSystem;
+
+  @override
+  String get operatingSystemVersion => io.Platform.operatingSystemVersion;
+
+  @override
+  String get localHostname => io.Platform.localHostname;
+
+  @override
+  Map<String, String> get environment => io.Platform.environment;
+
+  @override
+  String get executable => io.Platform.executable;
+
+  @override
+  String get resolvedExecutable => io.Platform.resolvedExecutable;
+
+  @override
+  Uri get script => io.Platform.script;
+
+  @override
+  List<String> get executableArguments => io.Platform.executableArguments;
+
+  @override
+  String? get packageConfig => io.Platform.packageConfig;
+
+  @override
+  String get version => io.Platform.version;
+
+  @override
+  bool get stdinSupportsAnsi => io.stdin.supportsAnsiEscapes;
+
+  @override
+  bool get stdoutSupportsAnsi => io.stdout.supportsAnsiEscapes;
+
+  @override
+  String get localeName => io.Platform.localeName;
+}