Docserver: refactor Servlet, ObjectStore, and ServerInstance architecture to

chrome/common/extensions/docs/server2/intro_data_source.py

 # Copyright (c) 2012 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.
 
 from HTMLParser import HTMLParser
 import logging
 import os
 import re
 
 from docs_server_utils import FormatKey
 from file_system import FileNotFoundError
 import compiled_file_system as compiled_fs
 from third_party.handlebar import Handlebar
 
 # TODO(kalman): rename this HTMLDataSource or other, then have separate intro
 # article data sources created as instances of it.
 
 _H1_REGEX = re.compile('<h1[^>.]*?>.*?</h1>', flags=re.DOTALL)
 
 class _IntroParser(HTMLParser):
-  """ An HTML parser which will parse table of contents and page title info out
+  ''' An HTML parser which will parse table of contents and page title info out
   of an intro.
-  """
+  '''
   def __init__(self):
     HTMLParser.__init__(self)
     self.toc = []
     self.page_title = None
     self._recent_tag = None
     self._current_heading = {}
 
   def handle_starttag(self, tag, attrs):
     id_ = ''
     if tag not in ['h1', 'h2', 'h3']:
@@ skipping 19 matching lines @@
       return
     if self._recent_tag == 'h1':
       if self.page_title is None:
         self.page_title = data
       else:
         self.page_title += data
     elif self._recent_tag in ['h2', 'h3']:
       self._current_heading['title'] += data
 
 class IntroDataSource(object):
-  """This class fetches the intros for a given API. From this intro, a table
+  '''This class fetches the intros for a given API. From this intro, a table
   of contents dictionary is created, which contains the headings in the intro.
-  """
+  '''
   class Factory(object):
     def __init__(self, compiled_fs_factory, ref_resolver_factory, base_paths):
       self._cache = compiled_fs_factory.Create(self._MakeIntroDict,
                                                IntroDataSource)
       self._ref_resolver = ref_resolver_factory.Create()
       self._base_paths = base_paths
 
     def _MakeIntroDict(self, intro_path, intro):
       # Guess the name of the API from the path to the intro.
       api_name = os.path.splitext(intro_path.split('/')[-1])[0]
@@ skipping 34 matching lines @@
       return self._cache.GetFromFile('%s/%s' % (base_path, path))
     for base_path in self._base_paths:
       try:
         return get_from_base_path(base_path)
       except FileNotFoundError:
         continue
     # Not found. Do the first operation again so that we get a stack trace - we
     # know that it'll fail.
     get_from_base_path(self._base_paths[0])
     raise AssertionError()