add gcode_svn source: for Google Code svn repositories

README.rst

@@ -150,6 +150,13 @@ Check a mercurial (hg) repository on `Google Code <https://code.google.com/>`_ f
 gcode_hg
   The name used on Google Code, e.g. ``chromium-compact-language-detector``.
 
+Check Google Code (svn repository)
+---------------------------------
+Check a subversion (svn) repository on `Google Code <https://code.google.com/>`_ for updates. The version returned is the svn resivion number.
+
+gcode_svn
+  The name used on Google Code, e.g. ``cld2``.
+
 Manually updating
 -----------------
 This enables you to manually specify the version (maybe because you want to approve each release before it gets to the script).

nvchecker/get_version.py

@@ -4,7 +4,7 @@ from importlib import import_module
 logger = logging.getLogger(__name__)
 handler_precedence = (
   'github', 'aur', 'pypi', 'archpkg', 'gems', 'pacman',
-  'cmd', 'gcode_hg', 'regex', 'manual', 'vcs'
+  'cmd', 'gcode_hg', 'gcode_svn', 'regex', 'manual', 'vcs'
 )
 
 def get_version(name, conf, callback):

nvchecker/source/gcode_svn.py

@@ -0,0 +1,26 @@
+import re
+import logging
+from functools import partial
+
+from tornado.httpclient import AsyncHTTPClient
+
+logger = logging.getLogger(__name__)
+
+GCODE_URL = 'https://code.google.com/p/%s/source/list'
+GCODE_SVN_RE = re.compile(r'<a href="detail\?r=\d+">r(\d+)</a>')
+
+def get_version(name, conf, callback):
+  repo = conf.get('gcode_svn') or name
+  url = GCODE_URL % repo
+  AsyncHTTPClient().fetch(url, user_agent='lilydjwg/nvchecker',
+                          callback=partial(_gcodehg_done, name, callback))
+
+def _gcodehg_done(name, callback, res):
+  data = res.body.decode('utf-8')
+  m = GCODE_SVN_RE.search(data)
+  if m:
+    version = m.group(1)
+  else:
+    logger.error('%s: version not found.', name)
+    version = None
+  callback(name, version)