Issue 3168 - Add a script for generating content blocker lists

sitescripts/content_blocker_lists/bin/generate_lists.py

Index: sitescripts/content_blocker_lists/bin/generate_lists.py
===================================================================
new file mode 100644
--- /dev/null
+++ b/sitescripts/content_blocker_lists/bin/generate_lists.py
@@ -0,0 +1,76 @@
+#!/usr/bin/env python
+# coding: utf-8
+
+# This file is part of Adblock Plus <https://adblockplus.org/>,
+# 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 os
+import subprocess
+import urllib2
+
+from sitescripts.utils import get_config
+
+def _update_abp2blocklist():
+  with open(os.devnull, "w") as devnull:
+    config = get_config()
+    abp2blocklist_path = config.get("content_blocker_lists",
+                                    "abp2blocklist_path")
+    if os.path.isdir(abp2blocklist_path):
+        subprocess.check_call(("hg", "pull", "-u", "-R", abp2blocklist_path),
+                              stdout=devnull)
+    else:
+      abp2blocklist_url = config.get("content_blocker_lists",
+                                     "abp2blocklist_url")
+      subprocess.check_call(("hg", "clone", abp2blocklist_url,
+                             abp2blocklist_path), stdout=devnull)
+    subprocess.check_call(("npm", "install"), cwd=abp2blocklist_path,
+                          stdout=devnull)
+
+def _download(url_key):
+  url = get_config().get("content_blocker_lists", url_key)
+  response = urllib2.urlopen(url)
+  try:
+    return response.read()
+  finally:
+    response.close()
+
+def _convert_filter_list(sources, destination_path_key):
+  config = get_config()
+  destination_path = config.get("content_blocker_lists", destination_path_key)
+  with open(destination_path, "wb") as destination_file:
+    abp2blocklist_path = config.get("content_blocker_lists",
+                                    "abp2blocklist_path")
+    process = subprocess.Popen(("node", "abp2blocklist.js"),
+                               cwd=abp2blocklist_path, stdin=subprocess.PIPE,
+                               stdout=destination_file)
+    try:
+      for source in sources:
+        print >>process.stdin, source
+    finally:
+      process.stdin.close()
+      process.wait()
+
+  if process.returncode:
+    raise Exception("abp2blocklist returned %s" % process.returncode)
+
+if __name__ == "__main__":
+  _update_abp2blocklist()
+
+  easylist = _download("easylist_url")
+  exceptionrules = _download("exceptionrules_url")
+
+  _convert_filter_list([easylist], "easylist_content_blocker_path")
+  _convert_filter_list([easylist, exceptionrules],
+                       "combined_content_blocker_path")