Move pub into sdk/lib/_internal.

utils/pub/git.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.
-
-/// Helper functionality for invoking Git.
-library git;
-
-import 'dart:async';
-import 'io.dart';
-import 'log.dart' as log;
-import 'utils.dart';
-
-/// Tests whether or not the git command-line app is available for use.
-Future<bool> get isInstalled {
-  if (_isGitInstalledCache != null) {
-    return new Future.value(_isGitInstalledCache);
-  }
-
-  return _gitCommand.then((git) => git != null);
-}
-
-/// Run a git process with [args] from [workingDir]. Returns the stdout as a
-/// list of strings if it succeeded. Completes to an exception if it failed.
-Future<List<String>> run(List<String> args,
-    {String workingDir, Map<String, String> environment}) {
-  return _gitCommand.then((git) {
-    return runProcess(git, args, workingDir: workingDir,
-        environment: environment);
-  }).then((result) {
-    if (!result.success) throw new Exception(
-        'Git error. Command: git ${args.join(" ")}\n'
-        '${result.stderr.join("\n")}');
-
-    return result.stdout;
-  });
-}
-
-bool _isGitInstalledCache;
-
-/// The cached Git command.
-String _gitCommandCache;
-
-/// Returns the name of the git command-line app, or null if Git could not be
-/// found on the user's PATH.
-Future<String> get _gitCommand {
-  if (_gitCommandCache != null) {
-    return new Future.value(_gitCommandCache);
-  }
-
-  return _tryGitCommand("git").then((success) {
-    if (success) return "git";
-
-    // Git is sometimes installed on Windows as `git.cmd`
-    return _tryGitCommand("git.cmd").then((success) {
-      if (success) return "git.cmd";
-      return null;
-    });
-  }).then((command) {
-    log.fine('Determined git command $command.');
-    _gitCommandCache = command;
-    return command;
-  });
-}
-
-/// Checks whether [command] is the Git command for this computer.
-Future<bool> _tryGitCommand(String command) {
-  // If "git --version" prints something familiar, git is working.
-  return runProcess(command, ["--version"]).then((results) {
-    var regexp = new RegExp("^git version");
-    return results.stdout.length == 1 && regexp.hasMatch(results.stdout[0]);
-  }).catchError((err) {
-    // If the process failed, they probably don't have it.
-    return false;
-  });
-}