Roll Observatory deps (charted -> ^0.3.0)

packages/dart_style/tool/grind.dart

+// Copyright (c) 2015, 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 'package:grinder/grinder.dart';
+import 'package:pub_semver/pub_semver.dart';
+import 'package:yaml/yaml.dart' as yaml;
+
+/// Matches the version line in dart_style's pubspec.
+final _versionPattern = new RegExp(r"^version: .*$", multiLine: true);
+
+main(args) => grind(args);
+
+@DefaultTask()
+@Task()
+validate() async {
+  // Test it.
+  await new TestRunner().testAsync();
+
+  // Make sure it's warning clean.
+  Analyzer.analyze("bin/format.dart", fatalWarnings: true);
+
+  // Format it.
+  Dart.run("bin/format.dart", arguments: ["-w", "."]);
+}
+
+/// Gets ready to publish a new version of the package.
+///
+/// To publish a version, you need to:
+///
+///   1. Make sure the version in the pubspec is a "-dev" number. This should
+///      already be the case since you've already landed patches that change
+///      the formatter and bumped to that as a consequence.
+///
+///   2. Run this task:
+///
+///         pub run grinder bump
+///
+///   3. Commit the change to a branch.
+///
+///   4. Send it out for review:
+///
+///         git cl upload
+///
+///   5. After the review is complete, land it:
+///
+///         git cl land
+///
+///   6. Tag the commit:
+///
+///         git tag -a "<version>" -m "<version>"
+///         git push origin <version>
+///
+///   7. Publish the package:
+///
+///         pub lish
+@Task()
+@Depends(validate)
+bump() async {
+  // Read the version from the pubspec.
+  var pubspecFile = getFile("pubspec.yaml");
+  var pubspec = pubspecFile.readAsStringSync();
+  var version = new Version.parse(yaml.loadYaml(pubspec)["version"]);
+
+  // Require a "-dev" version since we don't otherwise know what to bump it to.
+  if (!version.isPreRelease) throw "Cannot publish non-dev version $version.";
+
+  // Don't allow versions like "1.2.3-dev+4" because it's not clear if the
+  // user intended the "+4" to be discarded or not.
+  if (version.build.isNotEmpty) throw "Cannot publish build version $version.";
+
+  var bumped = new Version(version.major, version.minor, version.patch);
+
+  // Update the version in the pubspec.
+  pubspec = pubspec.replaceAll(_versionPattern, "version: $bumped");
+  pubspecFile.writeAsStringSync(pubspec);
+
+  // Update the version constant in bin/format.dart.
+  var binFormatFile = getFile("bin/format.dart");
+  var binFormat = binFormatFile.readAsStringSync().replaceAll(
+      new RegExp(r'const version = "[^"]+";'), 'const version = "$bumped";');
+  binFormatFile.writeAsStringSync(binFormat);
+  log("Updated version to '$bumped'.");
+}