Add experimental support for python in 'git cl format'

git_cache.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 """A git command for managing a local cache of git repositories."""
 
 from __future__ import print_function
 import errno
 import logging
@@ skipping 167 matching lines @@
     if norm_url.endswith('.git'):
       norm_url = norm_url[:-len('.git')]
     return norm_url.replace('-', '--').replace('/', '-').lower()
 
   @staticmethod
   def CacheDirToUrl(path):
     """Convert a cache dir path to its corresponding url."""
     netpath = re.sub(r'\b-\b', '/', os.path.basename(path)).replace('--', '-')
     return 'https://%s' % netpath
 
-  @staticmethod
-  def FindExecutable(executable):
-    """This mimics the "which" utility."""
-    path_folders = os.environ.get('PATH').split(os.pathsep)
-
-    for path_folder in path_folders:
-      target = os.path.join(path_folder, executable)
-      # Just incase we have some ~/blah paths.
-      target = os.path.abspath(os.path.expanduser(target))
-      if os.path.isfile(target) and os.access(target, os.X_OK):
-        return target
-      if sys.platform.startswith('win'):
-        for suffix in ('.bat', '.cmd', '.exe'):
-          alt_target = target + suffix
-          if os.path.isfile(alt_target) and os.access(alt_target, os.X_OK):
-            return alt_target
-    return None
-
   @classmethod
   def SetCachePath(cls, cachepath):
     with cls.cachepath_lock:
       setattr(cls, 'cachepath', cachepath)
 
   @classmethod
   def GetCachePath(cls):
     with cls.cachepath_lock:
       if not hasattr(cls, 'cachepath'):
         try:
@@ skipping 50 matching lines @@
           ['config', '--replace-all', 'remote.origin.fetch', refspec, regex],
           cwd=cwd)
 
   def bootstrap_repo(self, directory):
     """Bootstrap the repo from Google Stroage if possible.
 
     More apt-ly named bootstrap_repo_from_cloud_if_possible_else_do_nothing().
     """
 
     python_fallback = False
-    if sys.platform.startswith('win') and not self.FindExecutable('7z'):
+    if (sys.platform.startswith('win') and
+        not gclient_utils.FindExecutable('7z')):
       python_fallback = True
     elif sys.platform.startswith('darwin'):
       # The OSX version of unzip doesn't support zip64.
       python_fallback = True
-    elif not self.FindExecutable('unzip'):
+    elif not gclient_utils.FindExecutable('unzip'):
       python_fallback = True
 
     gs_folder = 'gs://%s/%s' % (self.bootstrap_bucket, self.basedir)
     gsutil = Gsutil(self.gsutil_exe, boto_path=None)
     # Get the most recent version of the zipfile.
     _, ls_out, _ = gsutil.check_call('ls', gs_folder)
     ls_out_sorted = sorted(ls_out.splitlines())
     if not ls_out_sorted:
       # This repo is not on Google Storage.
       return False
@@ skipping 403 matching lines @@
   dispatcher = subcommand.CommandDispatcher(__name__)
   return dispatcher.execute(OptionParser(), argv)
 
 
 if __name__ == '__main__':
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)