Extensions docs server: Design changes, partial template support.

chrome/common/extensions/docs/server2/branch_utility.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.
 
 import logging
-import re
 import json
 
-class BranchUtility(object):
-  """Utility class for dealing with different doc branches.
+OMAHA_PROXY_URL = 'http://omahaproxy.appspot.com/json'
+
+def GetChannelNameFromPath(path):
+  first_part = path.split('/')[0]
+  if first_part in ['trunk', 'dev', 'beta', 'stable', 'local']:
+    return first_part
+  else:
+    return 'stable'
+
+def GetBranchNumberForChannelName(channel_name,
+                                  urlfetch,
+                                  base_path=OMAHA_PROXY_URL):
+  """Returns an empty string if the branch number cannot be found.
+  Throws exception on network errors.
   """
-  def __init__(self, urlfetch):
-    self.omaha_proxy_url = 'http://omahaproxy.appspot.com/json'
-    self.urlfetch = urlfetch
+  if channel_name == 'trunk' or channel_name == 'local':
+    return channel_name
 
-  def SetURL(self, url):
-    self.omaha_proxy_url = url
+  fetch_data = urlfetch.fetch(base_path)
+  if fetch_data.content == '':
+    raise Exception('Fetch returned zero results.')
 
-  def GetChannelNameFromPath(self, path):
-    first_part = path.split('/')[0]
-    if first_part in ['trunk', 'dev', 'beta', 'stable', 'local']:
-      return first_part
-    else:
-      return 'stable'
+  version_json = json.loads(fetch_data.content)
+  branch_numbers = {}
+  for entry in version_json:
+    if entry['os'] not in ['win', 'linux', 'mac', 'cros']:
+      continue
+    for version in entry['versions']:
+      if version['channel'] != channel_name:
+        continue
+      if version['true_branch'] not in branch_numbers:
+        branch_numbers[version['true_branch']] = 0
+      else:
+        branch_numbers[version['true_branch']] += 1
 
-  def GetBranchNumberForChannelName(self, channel_name):
-    """Returns an empty string if the branch number cannot be found.
-    Throws exception on network errors.
-    """
-    if channel_name == 'trunk' or channel_name == 'local':
-      return channel_name
+  sorted_list = [x for x in branch_numbers.iteritems()]
+  sorted_list.sort(key = lambda x: x[1])
+  sorted_list.reverse()
 
-    fetch_data = self.urlfetch.fetch(self.omaha_proxy_url)
-    if fetch_data.content == '':
-      raise Exception('Fetch returned zero results.')
+  branch_number, _ = sorted_list[0]
 
-    version_json = json.loads(fetch_data.content)
-    branch_numbers = {}
-    for entry in version_json:
-      if entry['os'] not in ['win', 'linux', 'mac', 'cros']:
-        continue
-      for version in entry['versions']:
-        if version['channel'] != channel_name:
-          continue
-        if version['true_branch'] not in branch_numbers:
-          branch_numbers[version['true_branch']] = 0
-        else:
-          branch_numbers[version['true_branch']] += 1
-
-    sorted_list = [x for x in branch_numbers.iteritems()]
-    sorted_list.sort(key = lambda x: x[1])
-    sorted_list.reverse()
-
-    branch_number, _ = sorted_list[0]
-
-    return branch_number
+  return branch_number