depot_tools: import bot_update gclient git rietveld tryserver recipe modules (reland #1)

recipe_modules/git/resources/git_setup.py

Index: recipe_modules/git/resources/git_setup.py
diff --git a/recipe_modules/git/resources/git_setup.py b/recipe_modules/git/resources/git_setup.py
new file mode 100755
index 0000000000000000000000000000000000000000..90035224301d0185235369a8c15fa845050f7d87
--- /dev/null
+++ b/recipe_modules/git/resources/git_setup.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+# Copyright 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""This script ensures that a given directory is an initialized git repo."""
+
+import argparse
+import logging
+import os
+import subprocess
+import sys
+
+
+def run_git(git_cmd, *args, **kwargs):
+  """Runs git with given arguments.
+
+  kwargs are passed through to subprocess.
+
+  If the kwarg 'throw' is provided, this behaves as check_call, otherwise will
+  return git's return value.
+  """
+  logging.info('Running: %s %s %s', git_cmd, args, kwargs)
+  func = subprocess.check_call if kwargs.pop('throw', True) else subprocess.call
+  return func((git_cmd,)+args, **kwargs)
+
+
+def main():
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--path', help='Path to prospective git repo.',
+                      required=True)
+  parser.add_argument('--url', help='URL of remote to make origin.',
+                      required=True)
+  parser.add_argument('--git_cmd_path',
+                      help='Path to the git command to run.',
+                      default='git')
+  parser.add_argument('--remote', help='Name of the git remote.',
+                      default='origin')
+  parser.add_argument('-v', '--verbose', action='store_true')
+  opts = parser.parse_args()
+
+  path = opts.path
+  remote = opts.remote
+  url = opts.url
+
+  logging.getLogger().setLevel(logging.DEBUG if opts.verbose else logging.WARN)
+
+  if not os.path.exists(path):
+    os.makedirs(path)
+
+  if os.path.exists(os.path.join(path, '.git')):
+    run_git(opts.git_cmd_path, 'config', '--remove-section',
+            'remote.%s' % remote, cwd=path)
+  else:
+    run_git(opts.git_cmd_path, 'init', cwd=path)
+  run_git(opts.git_cmd_path, 'remote', 'add', remote, url, cwd=path)
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())