1# Copyright (c) 2013 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5from pylib import cmd_helper
6
7
8def GetGitHeadSHA1(in_directory):
9  """Returns the git hash tag for the given directory.
10
11  Args:
12    in_directory: The directory where git is to be run.
13  """
14  command_line = ['git', 'log', '-1', '--pretty=format:%H']
15  output = cmd_helper.GetCmdOutput(command_line, cwd=in_directory)
16  return output[0:40]
17