Move pub into sdk/lib/_internal.

utils/pub/sdk.dart

-// 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.
-
-/// Operations relative to the user's installed Dart SDK.
-library sdk;
-
-import 'dart:io';
-
-import 'package:pathos/path.dart' as path;
-
-import 'io.dart';
-import 'log.dart' as log;
-import 'version.dart';
-
-/// Matches an Eclipse-style SDK version number. This is four dotted numbers
-/// (major, minor, patch, build) with an optional suffix attached to the build
-/// number.
-final _versionPattern = new RegExp(r'^(\d+)\.(\d+)\.(\d+)\.(\d+.*)$');
-
-/// Gets the path to the root directory of the SDK.
-String get rootDirectory {
-  // If the environment variable was provided, use it. This is mainly used for
-  // the pub tests.
-  var dir = Platform.environment["DART_SDK"];
-  if (dir != null) {
-    log.fine("Using DART_SDK to find SDK at $dir");
-    return dir;
-  }
-
-  var pubDir = path.dirname(new Options().script);
-  dir = path.normalize(path.join(pubDir, "../../"));
-  log.fine("Located SDK at $dir");
-  return dir;
-}
-
-/// Gets the SDK's revision number formatted to be a semantic version.
-Version version = _getVersion();
-
-/// Is `true` if the current SDK is an unreleased bleeding edge version.
-bool get isBleedingEdge {
-  // The live build is locked to the magical old number "0.1.2+<stuff>".
-  return version.major == 0 && version.minor == 1 && version.patch == 2;
-}
-
-/// Determine the SDK's version number.
-Version _getVersion() {
-  var revisionPath = path.join(rootDirectory, "version");
-  var version = readTextFile(revisionPath).trim();
-
-  // Given a version file like: 0.1.2.0_r17495
-  // We create a semver like:   0.1.2+0.r17495
-  var match = _versionPattern.firstMatch(version);
-  if (match == null) {
-    throw new FormatException("The Dart SDK's 'version' file was not in a "
-        "format pub could recognize. Found: $version");
-  }
-
-  // Semantic versions cannot use "_".
-  var build = match[4].replaceAll('_', '.');
-
-  return new Version(
-      int.parse(match[1]), int.parse(match[2]), int.parse(match[3]),
-      build: build);
-}