transfer package:file, package:file_testing

.github/ISSUE_TEMPLATE/file.md

@@ -0,0 +1,5 @@
+---
+name: "package:file"
+about: "Create a bug or file a feature request against package:file."
+labels: "package:file"
+---

.github/labeler.yml

@@ -16,6 +16,14 @@
   - changed-files:
       - any-glob-to-any-file: 'pkgs/extension_discovery/**'
 
+'package:file':
+  - changed-files:
+      - any-glob-to-any-file: 'pkgs/file/**'
+
+'package:file_testing':
+  - changed-files:
+      - any-glob-to-any-file: 'pkgs/file_testing/**'
+
 'package:graphs':
   - changed-files:
       - any-glob-to-any-file: 'pkgs/graphs/**'

.github/workflows/file.yml

@@ -0,0 +1,66 @@
+name: package:file
+permissions: read-all
+
+on:
+  # Run on PRs and pushes to the default branch.
+  push:
+    branches: [ main ]
+    paths:
+      - '.github/workflows/file.yml'
+      - 'pkgs/file/**'
+      - 'pkgs/file_testing/**'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - '.github/workflows/file.yml'
+      - 'pkgs/file/**'
+      - 'pkgs/file_testing/**'
+  schedule:
+    - cron: "0 0 * * 0"
+
+jobs:
+  correctness:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        package: [file, file_testing]
+
+    steps:
+      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
+        with:
+          sdk: dev
+
+      - name: Install ${{ matrix.package }} dependencies
+        working-directory: pkgs/${{ matrix.package }}
+        run: dart pub get
+
+      - name: Verify formatting in ${{ matrix.package }}
+        working-directory: pkgs/${{ matrix.package }}
+        run: dart format --output=none --set-exit-if-changed .
+
+      - name: Analyze package ${{ matrix.package }} source
+        working-directory: pkgs/${{ matrix.package }}
+        run: dart analyze --fatal-infos
+
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        package: [file]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        sdk: [stable, dev]
+
+    steps:
+      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
+        with:
+          sdk: ${{ matrix.sdk }}
+
+      - name: Install ${{ matrix.package }} dependencies
+        working-directory: pkgs/${{ matrix.package }}
+        run: dart pub get
+
+      - name: Run ${{ matrix.package }} Tests
+        working-directory: pkgs/${{ matrix.package }}
+        run: dart pub run test -j1

README.md

@@ -17,6 +17,8 @@ don't naturally belong to other topic monorepos (like
 | [cli_config](pkgs/cli_config/) | A library to take config values from configuration files, CLI arguments, and environment variables. | [![pub package](https://img.shields.io/pub/v/cli_config.svg)](https://pub.dev/packages/cli_config) |
 | [coverage](pkgs/coverage/) | Coverage data manipulation and formatting. | [![pub package](https://img.shields.io/pub/v/coverage.svg)](https://pub.dev/packages/coverage) |
 | [extension_discovery](pkgs/extension_discovery/) | A convention and utilities for package extension discovery. | [![pub package](https://img.shields.io/pub/v/extension_discovery.svg)](https://pub.dev/packages/extension_discovery) |
+| [file](pkgs/file/) | A pluggable, mockable file system abstraction for Dart. | [![pub package](https://img.shields.io/pub/v/file.svg)](https://pub.dev/packages/file) |
+| [file_testing](pkgs/file_testing/) | Testing utilities for package:file (published but unlisted). | [![pub package](https://img.shields.io/pub/v/file_testing.svg)](https://pub.dev/packages/file_testing) |
 | [graphs](pkgs/graphs/) | Graph algorithms that operate on graphs in any representation | [![pub package](https://img.shields.io/pub/v/graphs.svg)](https://pub.dev/packages/graphs) |
 | [mime](pkgs/mime/) | Utilities for handling media (MIME) types. | [![pub package](https://img.shields.io/pub/v/mime.svg)](https://pub.dev/packages/mime) |
 | [oauth2](pkgs/oauth2/) | A client library for authenticatingand making requests via OAuth2. | [![pub package](https://img.shields.io/pub/v/oauth2.svg)](https://pub.dev/packages/oauth2) |

pkgs/file/.gitignore

@@ -0,0 +1,5 @@
+.dart_tool/
+.packages
+.pub/
+build/
+pubspec.lock

pkgs/file/CHANGELOG.md

@@ -0,0 +1,239 @@
+## 7.0.1-wip
+
+## 7.0.0
+
+* Dart 3 fixes for class modifiers.
+* `MemoryFileSystem` now treats empty paths as non-existent.
+* Fix `FileSystem.isLink`/`FileSystem.isLinkSync` to not follow symbolic links.
+* Make the return type of `MemoryFile.openRead` and `_ChrootFile.openRead` again
+  match the return type from `dart:io`.
+
+## 6.1.4
+
+* Populate the pubspec `repository` field.
+
+## 6.1.3
+
+* In classes that implement `File` methods `create`, `createSync` now take `bool exclusive = true` parameter. No functional changes.
+
+## 6.1.2
+
+* `MemoryFileSystem` now provides `opHandle`s for exists operations.
+
+## 6.1.1
+
+* `MemoryFile` now provides `opHandle`s for copy and open operations.
+
+## 6.1.0
+
+* Reading invalid UTF8 with the `MemoryFileSystem` now correctly throws a `FileSystemException` instead of a `FormatError`.
+* `MemoryFileSystem` now provides an `opHandle` to inspect read/write operations.
+* `MemoryFileSystem` now creates the temporary directory before returning in `createTemp`/`createTempSync`.
+
+## 6.0.1
+
+* Fix sound type error in memory backend when reading non-existent `MemoryDirectory`.
+
+## 6.0.0
+
+* First stable null safe release.
+
+## 6.0.0-nullsafety.4
+
+* Update upper bound of SDK constraint.
+
+## 6.0.0-nullsafety.3
+
+* Update upper bound of SDK constraint.
+
+## 6.0.0-nullsafety.2
+
+* Make `ForwardingFile.openRead`'s return type again match the return type from
+  `dart:io`.
+* Remove some unnecessary `Uint8List` conversions in `ForwardingFile`.
+
+## 6.0.0-nullsafety.1
+
+* Update to null safety.
+* Remove record/replay functionality.
+* Made `MemoryRandomAccessFile` and `MemoryFile.openWrite` handle the file
+  being removed or renamed while open.
+* Fixed incorrect formatting in `NoMatchingInvocationError.toString()`.
+* Fixed more test flakiness.
+* Enabled more tests.
+* Internal cleanup.
+* Remove implicit dynamic in preparation for null safety.
+* Remove dependency on Intl.
+
+## 5.2.1
+
+* systemTemp directories created by `MemoryFileSystem` will allot names
+  based on the file system instance instead of globally.
+* `MemoryFile.readAsLines()`/`readAsLinesSync()` no longer treat a final newline
+  in the file as the start of a new, empty line.
+* `RecordingFile.readAsLine()`/`readAsLinesSync()` now always record a final
+  newline.
+* `MemoryFile.flush()` now returns `Future<void>` instead of `Future<dynamic>`.
+* Fixed some test flakiness.
+* Enabled more tests.
+* Internal cleanup.
+
+## 5.2.0
+
+* Added a `MemoryRandomAccessFile` class and implemented
+  `MemoryFile.open()`/`openSync()`.
+
+## 5.1.0
+
+* Added a new `MemoryFileSystem` constructor to use a test clock
+
+## 5.0.10
+
+* Added example
+
+## 5.0.9
+
+* Fix lints for project health
+
+## 5.0.8
+
+* Return `Uint8List` rather than `List<int>`.
+
+## 5.0.7
+
+* Dart 2 fixes for `RecordingProxyMixin` and `ReplayProxyMixin`.
+
+## 5.0.6
+
+* Dart 2 fixes for `RecordingFile.open()`
+
+## 5.0.5
+
+* Dart 2 fixes
+
+## 5.0.4
+
+* Update SDK constraint to 2.0.0-dev.67.0, remove workaround in
+  recording_proxy_mixin.dart.
+* Fix usage within Dart 2 runtime mode in Dart 2.0.0-dev.61.0 and later.
+* Relax constraints on `package:test`
+
+## 5.0.3
+
+* Update `package:test` dependency to 1.0
+
+## 5.0.2
+
+* Declare compatibility with Dart 2 stable
+
+## 5.0.1
+
+* Remove upper case constants
+* Update SDK constraint to 2.0.0-dev.54.0.
+
+## 5.0.0
+
+* Moved `testing` library into a dedicated `package:file_testing` so that
+  libraries don't need to take on a transitive dependency on `package:test`
+  in order to use `package:file`.
+
+## 4.0.1
+
+* General library cleanup
+* Add `style` support in `MemoryFileSystem`, so that callers can choose to
+  have a memory file system with windows-like paths. [#68]
+  (https://github.com/google/file.dart/issues/68)
+
+## 4.0.0
+
+* Change method signature for `RecordingRandomAccessFile._close` to return a
+  `Future<void>` instead of `Future<RandomAccessFile>`. This follows a change in
+  dart:io, Dart SDK `2.0.0-dev.40`.
+
+## 3.0.0
+
+* Import `dart:io` unconditionally. More recent Dart SDK revisions allow
+  `dart:io` to be imported in a browser context, though if methods are actually
+  invoked, they will fail. This matches well with `package:file`, where users
+  can use the `memory` library and get in-memory implementations of the
+  `dart:io` interfaces.
+* Bump minimum Dart SDK to `1.24.0`
+
+## 2.3.7
+
+* Fix Dart 2 error.
+
+## 2.3.6
+
+* Relax sdk upper bound constraint to  '<2.0.0' to allow 'edge' dart sdk use.
+
+## 2.3.5
+
+* Fix internal use of a cast which fails on Dart 2.0 .
+
+## 2.3.4
+
+* Bumped maximum Dart SDK version to 2.0.0-dev.infinity
+
+## 2.3.3
+
+* Relaxes version requirements on `package:intl`
+
+## 2.3.2
+
+* Fixed `FileSystem.directory(Uri)`, `FileSystem.file(Uri)`, and
+  `FileSystem.link(Uri)` to consult the file system's path context when
+  converting the URI to a file path rather than using `Uri.toFilePath()`.
+
+## 2.3.1
+
+* Fixed `MemoryFileSystem` to make `File.writeAs...()` update the last modified
+  time of the file.
+
+## 2.3.0
+
+* Added the following convenience methods in `Directory`:
+  * `Directory.childDirectory(String basename)`
+  * `Directory.childFile(String basename)`
+  * `Directory.childLink(String basename)`
+
+## 2.2.0
+
+* Added `ErrorCodes` class, which holds errno values.
+
+## 2.1.0
+
+* Add support for new `dart:io` API methods added in Dart SDK 1.23
+
+## 2.0.1
+
+* Minor doc updates
+
+## 2.0.0
+
+* Improved `toString` implementations in file system entity classes
+* Added `ForwardingFileSystem` and associated forwarding classes to the
+  main `file` library
+* Removed `FileSystem.pathSeparator`, and added a more comprehensive
+  `FileSystem.path` property
+* Added `FileSystemEntity.basename` and `FileSystemEntity.dirname`
+* Added the `record_replay` library
+* Added the `testing` library
+
+## 1.0.1
+
+* Added `FileSystem.systemTempDirectory`
+* Added the ability to pass `Uri` and `FileSystemEntity` types to
+  `FileSystem.directory()`, `FileSystem.file()`, and `FileSystem.link()`
+* Added `FileSystem.pathSeparator`
+
+## 1.0.0
+
+* Unified interface to match dart:io API
+* Local file system implementation
+* In-memory file system implementation
+* Chroot file system implementation
+
+## 0.1.0
+
+* Initial version

pkgs/file/LICENSE

@@ -0,0 +1,26 @@
+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.