Issue 2456 - [cms] Use logging module

cms/sources.py

 # coding: utf-8
 
 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2015 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
 
 import codecs
 import ConfigParser
 import json
 import os
 from StringIO import StringIO
 import subprocess
-import sys
 import urlparse
 import zipfile
+import logging
 
 class Source:
   def resolve_link(self, url, locale):
     parsed = urlparse.urlparse(url)
     page = parsed.path
     if parsed.scheme != "" or page.startswith("/") or page.startswith("."):
       # Not a page link
       return None, None
 
     if page == "" and url != "":
@@ skipping 15 matching lines @@
     if self.has_localizable_file(default_locale, page):
       if not self.has_localizable_file(locale, page):
         locale = default_locale
     elif self.has_page(page):
       if not has_locale(locale, page):
         locale = default_locale
     elif self.has_page(alternative_page):
       if not has_locale(locale, alternative_page):
         locale = default_locale
     else:
-      print >>sys.stderr, "Warning: Link to %s cannot be resolved" % page
+      logging.warning("Link to %s cannot be resolved", page)
 
     parts = page.split("/")
     if parts[-1] == default_page:
       page = "/".join(parts[:-1])
 
     path = "/%s/%s" % (locale, page)
     return locale, urlparse.urlunparse(parsed[0:2] + (path,) + parsed[3:])
 
   def read_config(self):
     configdata = self.read_file("settings.ini")
@@ skipping 209 matching lines @@
         path = os.path.join(dir, filename)
         if os.path.isfile(path):
           result.append(relpath + filename)
         elif os.path.isdir(path):
           do_list(path, relpath + filename + "/")
     do_list(self.get_path(subdir), "")
     return result
 
   def get_cache_dir(self):
     return os.path.join(self._dir, "cache")