Rietveld: add CQ status URL instead of comment.

appengine/chromium_rietveld/codereview/utils.py

 # Copyright 2011 Google Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
 """Collection of helper functions."""
 
+import re
 import urlparse
 
 from google.appengine.ext import db
 
 from codereview.exceptions import FetchError
 
 
 def make_url(base, filename, rev):
   """Helper to construct the URL to fetch.
 
@@ skipping 59 matching lines @@
 def unify_linebreaks(text):
   """Helper to return a string with all line breaks converted to LF.
 
   Args:
     text: a string.
 
   Returns:
     A string with all line breaks converted to LF.
   """
   return text.replace('\r\n', '\n').replace('\r', '\n')
+
+
+_CQ_STATUS_REGEX = re.compile(
+    '(dry run: )?CQ is trying da patch. Follow status at\s+'
+    '(https://.+/patch-status/(.+/)?(\d+)/(\d+))\s*', re.I)
+
+
+def parse_cq_status_url_message(msg):
+  """Returns url, issue, patchset parsed from CQ status message.
+
+  If parsing failed, returns None, None, None.
+  """
+  # Example of message, Dry Run prefix is optional.
+  # Dry run: CQ is trying da patch. Follow status at
+  # https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.org/2131593002/1
+  match = _CQ_STATUS_REGEX.match(msg)
+  if not match:
+    return None, None, None
+  _, url, _, issue, patchset = match.groups()
+  return url, int(issue), int(patchset)