move io utils to their own library, release 1.9.1 (flutter#74)

Author: jakemac53

.travis.yml

@@ -7,6 +7,11 @@ dart_task:
   - dartfmt
   - dartanalyzer: --fatal-warnings .
 
+matrix:
+  include:
+  - dart: dev
+    script: pub run build_runner test -- -p chrome
+
 # Only building master means that we don't run two builds for each pull request.
 branches:
   only: [master]

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 1.9.1
+
+- Remove accidental transitive import of `dart:io` from entrypoints that are
+  supposed to be cross-platform compatible.
+
 ## 1.9.0
 
 - Based on new JSON file format with more content.

lib/src/discovery.dart

@@ -11,7 +11,7 @@ import "errors.dart";
 import "package_config_impl.dart";
 import "package_config_json.dart";
 import "packages_file.dart" as packages_file;
-import "util.dart" show defaultLoader, pathJoin;
+import "util_io.dart" show defaultLoader, pathJoin;
 
 final Uri packageConfigJsonPath = Uri(path: ".dart_tool/package_config.json");
 final Uri dotPackagesPath = Uri(path: ".packages");

lib/src/package_config_io.dart

@@ -14,6 +14,7 @@ import "package_config_impl.dart";
 import "package_config_json.dart";
 import "packages_file.dart" as packages_file;
 import "util.dart";
+import "util_io.dart";
 
 /// Reads a package configuration file.
 ///

lib/src/packages_io_impl.dart

@@ -12,7 +12,7 @@ import "dart:io" show Directory;
 
 import "packages_impl.dart";
 
-import "util.dart";
+import "util_io.dart";
 
 /// A [Packages] implementation based on a local directory.
 class FilePackagesDirectoryPackages extends PackagesBase {

lib/src/util.dart

@@ -5,9 +5,6 @@
 /// Utility methods used by more than one library in the package.
 library package_config.util;
 
-import 'dart:io';
-import 'dart:typed_data';
-
 import "errors.dart";
 
 // All ASCII characters that are valid in a package name, with space
@@ -215,102 +212,6 @@ Uri relativizeUri(Uri uri, Uri /*?*/ baseUri) {
   }
 }
 
-Future<Uint8List> defaultLoader(Uri uri) async {
-  if (uri.isScheme("file")) {
-    var file = File.fromUri(uri);
-    try {
-      return file.readAsBytes();
-    } catch (_) {
-      return null;
-    }
-  }
-  if (uri.isScheme("http") || uri.isScheme("https")) {
-    return _httpGet(uri);
-  }
-  throw UnsupportedError("Default URI unsupported scheme: $uri");
-}
-
-Future<Uint8List /*?*/ > _httpGet(Uri uri) async {
-  assert(uri.isScheme("http") || uri.isScheme("https"));
-  var client = HttpClient();
-  var request = await client.getUrl(uri);
-  var response = await request.close();
-  if (response.statusCode != HttpStatus.ok) {
-    return null;
-  }
-  var splitContent = await response.toList();
-  var totalLength = 0;
-  if (splitContent.length == 1) {
-    var part = splitContent[0];
-    if (part is Uint8List) {
-      return part;
-    }
-  }
-  for (var list in splitContent) {
-    totalLength += list.length;
-  }
-  var result = Uint8List(totalLength);
-  var offset = 0;
-  for (Uint8List contentPart in splitContent) {
-    result.setRange(offset, offset + contentPart.length, contentPart);
-    offset += contentPart.length;
-  }
-  return result;
-}
-
-/// The file name of a path.
-///
-/// The file name is everything after the last occurrence of
-/// [Platform.pathSeparator], or the entire string if no
-/// path separator occurs in the string.
-String fileName(String path) {
-  var separator = Platform.pathSeparator;
-  var lastSeparator = path.lastIndexOf(separator);
-  if (lastSeparator < 0) return path;
-  return path.substring(lastSeparator + separator.length);
-}
-
-/// The directory name of a path.
-///
-/// The directory name is everything before the last occurrence of
-/// [Platform.pathSeparator], or the empty string if no
-/// path separator occurs in the string.
-String dirName(String path) {
-  var separator = Platform.pathSeparator;
-  var lastSeparator = path.lastIndexOf(separator);
-  if (lastSeparator < 0) return "";
-  return path.substring(0, lastSeparator);
-}
-
-/// Join path parts with the [Platform.pathSeparator].
-///
-/// If a part ends with a path separator, then no extra separator is
-/// inserted.
-String pathJoin(String part1, String part2, [String part3]) {
-  var separator = Platform.pathSeparator;
-  var separator1 = part1.endsWith(separator) ? "" : separator;
-  if (part3 == null) {
-    return "$part1$separator1$part2";
-  }
-  var separator2 = part2.endsWith(separator) ? "" : separator;
-  return "$part1$separator1$part2$separator2$part3";
-}
-
-/// Join an unknown number of path parts with [Platform.pathSeparator].
-///
-/// If a part ends with a path separator, then no extra separator is
-/// inserted.
-String pathJoinAll(Iterable<String> parts) {
-  var buffer = StringBuffer();
-  var separator = "";
-  for (var part in parts) {
-    buffer..write(separator)..write(part);
-    separator =
-        part.endsWith(Platform.pathSeparator) ? "" : Platform.pathSeparator;
-  }
-  return buffer.toString();
-}
-
 // Character constants used by this package.
 /// "Line feed" control character.
 const int $lf = 0x0a;

lib/src/util_io.dart

@@ -0,0 +1,106 @@
+// Copyright (c) 2020, 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.
+
+/// Utility methods requiring dart:io and used by more than one library in the
+/// package.
+library package_config.util_io;
+
+import 'dart:io';
+import 'dart:typed_data';
+
+Future<Uint8List> defaultLoader(Uri uri) async {
+  if (uri.isScheme("file")) {
+    var file = File.fromUri(uri);
+    try {
+      return file.readAsBytes();
+    } catch (_) {
+      return null;
+    }
+  }
+  if (uri.isScheme("http") || uri.isScheme("https")) {
+    return _httpGet(uri);
+  }
+  throw UnsupportedError("Default URI unsupported scheme: $uri");
+}
+
+Future<Uint8List /*?*/ > _httpGet(Uri uri) async {
+  assert(uri.isScheme("http") || uri.isScheme("https"));
+  var client = HttpClient();
+  var request = await client.getUrl(uri);
+  var response = await request.close();
+  if (response.statusCode != HttpStatus.ok) {
+    return null;
+  }
+  var splitContent = await response.toList();
+  var totalLength = 0;
+  if (splitContent.length == 1) {
+    var part = splitContent[0];
+    if (part is Uint8List) {
+      return part;
+    }
+  }
+  for (var list in splitContent) {
+    totalLength += list.length;
+  }
+  var result = Uint8List(totalLength);
+  var offset = 0;
+  for (Uint8List contentPart in splitContent) {
+    result.setRange(offset, offset + contentPart.length, contentPart);
+    offset += contentPart.length;
+  }
+  return result;
+}
+
+/// The file name of a path.
+///
+/// The file name is everything after the last occurrence of
+/// [Platform.pathSeparator], or the entire string if no
+/// path separator occurs in the string.
+String fileName(String path) {
+  var separator = Platform.pathSeparator;
+  var lastSeparator = path.lastIndexOf(separator);
+  if (lastSeparator < 0) return path;
+  return path.substring(lastSeparator + separator.length);
+}
+
+/// The directory name of a path.
+///
+/// The directory name is everything before the last occurrence of
+/// [Platform.pathSeparator], or the empty string if no
+/// path separator occurs in the string.
+String dirName(String path) {
+  var separator = Platform.pathSeparator;
+  var lastSeparator = path.lastIndexOf(separator);
+  if (lastSeparator < 0) return "";
+  return path.substring(0, lastSeparator);
+}
+
+/// Join path parts with the [Platform.pathSeparator].
+///
+/// If a part ends with a path separator, then no extra separator is
+/// inserted.
+String pathJoin(String part1, String part2, [String part3]) {
+  var separator = Platform.pathSeparator;
+  var separator1 = part1.endsWith(separator) ? "" : separator;
+  if (part3 == null) {
+    return "$part1$separator1$part2";
+  }
+  var separator2 = part2.endsWith(separator) ? "" : separator;
+  return "$part1$separator1$part2$separator2$part3";
+}
+
+/// Join an unknown number of path parts with [Platform.pathSeparator].
+///
+/// If a part ends with a path separator, then no extra separator is
+/// inserted.
+String pathJoinAll(Iterable<String> parts) {
+  var buffer = StringBuffer();
+  var separator = "";
+  for (var part in parts) {
+    buffer..write(separator)..write(part);
+    separator =
+        part.endsWith(Platform.pathSeparator) ? "" : Platform.pathSeparator;
+  }
+  return buffer.toString();
+}

pubspec.yaml

@@ -1,5 +1,5 @@
 name: package_config
-version: 1.9.0
+version: 1.9.1
 description: Support for working with Package Configuration files.
 homepage: https://github.com/dart-lang/package_config
 
@@ -14,3 +14,6 @@ dev_dependencies:
   test: ^1.6.4
   matcher: ^0.12.5
   pedantic: 1.8.0
+  build_runner: ^1.0.0
+  build_web_compilers: ^2.0.0
+  build_test: ^0.10.0

test/discovery_test.dart

@@ -2,13 +2,15 @@
 // 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.
 
+@TestOn('vm')
 library package_config.discovery_test;
 
 import "dart:io";
 import "package:test/test.dart";
 import "package:package_config/package_config.dart";
 
 import "src/util.dart";
+import "src/util_io.dart";
 
 const packagesFile = """
 # A comment

test/discovery_uri_test.dart

@@ -2,6 +2,7 @@
 // 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.
 
+@TestOn('vm')
 library package_config.discovery_test;
 
 import "package:test/test.dart";