Add first changes needed for OWNERS file support.

presubmit_support.py

 #!/usr/bin/python
 # Copyright (c) 2010 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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.3.5'
 
@@ skipping 33 matching lines @@
     # Statement seems to have no effect
     # pylint: disable=W0104
     json.loads
   except (ImportError, AttributeError):
     # Import the one included in depot_tools.
     sys.path.append(os.path.join(os.path.dirname(__file__), 'third_party'))
     import simplejson as json
 
 # Local imports.
 import gclient_utils
+import owners
 import presubmit_canned_checks
 import scm
 
 
 # Ask for feedback only once in program lifetime.
 _ASKED_FOR_FEEDBACK = False
 
 
 class NotImplementedException(Exception):
   """We're leaving placeholders in a bunch of places to remind us of the
@@ skipping 184 matching lines @@
 
     # InputApi.platform is the platform you're currently running on.
     self.platform = sys.platform
 
     # The local path of the currently-being-processed presubmit script.
     self._current_presubmit_path = os.path.dirname(presubmit_path)
 
     # We carry the canned checks so presubmit scripts can easily use them.
     self.canned_checks = presubmit_canned_checks
 
+    # TODO(dpranke): figure out a list of all approved owners for a repo

[M-A Ruel, 2011/02/24 16:25:57]

I think owners are to respect to a specific Change. I don't think creating the
db is slow enough to warrant caching it in InputApi.

+    # in order to be able to handle wildcard OWNERS files?
+    self.owners_db = owners.Database(change.RepositoryRoot(),
+        all_owners=None, open=open, os_path=self.os_path)
+
   def PresubmitLocalPath(self):
     """Returns the local path of the presubmit script currently being run.
 
     This is useful if you don't want to hard-code absolute paths in the
     presubmit script.  For example, It can be used to find another file
     relative to the PRESUBMIT.py script, so the whole tree can be branched and
     the presubmit script still works, without editing its content.
     """
     return self._current_presubmit_path
 
@@ skipping 890 matching lines @@
                                options.commit,
                                options.verbose,
                                sys.stdout,
                                sys.stdin,
                                options.default_presubmit,
                                options.may_prompt)
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))