rewrite youtube plugin to use json instead of lxml.etree and to be more flexible

plugins/youtube.py

@@ -1,41 +1,39 @@
-import re
-from lxml import etree
+import json
 import locale
+import re
+import urllib2
 
 from util import hook
 
+locale.setlocale(locale.LC_ALL, '')
 
-def ytdata(id):
-    url = 'http://gdata.youtube.com/feeds/api/videos/' + id
-    x = etree.parse(url)
-
-    # I can't figure out how to deal with schemas/namespaces properly :(
-    yt = '{http://gdata.youtube.com/schemas/2007}'
-    media = '{http://search.yahoo.com/mrss/}'
-
-    rating = x.find('{http://schemas.google.com/g/2005}rating')
-    data = dict(rating.items())
-    data['title'] = x.find('{http://www.w3.org/2005/Atom}title').text
-    data['views'] = locale.format('%d', int(x.find(yt + 'statistics').get(
-                        'viewCount')), 1)
-    length = int(x.find(media + 'group/' + yt + 'duration').get('seconds'))
-    data['length'] = ''
-    if length / 3600: # > 1 hour
-        data['length'] += str(length/3600) + 'h '
-    if length / 60: # > 1 minute
-        data['length'] += str(length/60 % 60) + 'm '
-    data['length'] += "%ds" % (length % 60)
-
-    return data
-
-youtube_re = re.compile(r'.*youtube.*v=([-_a-z0-9]+)', flags=re.IGNORECASE)
-
+youtube_re = re.compile(r'.*youtube.*v=([-_a-z0-9]+)', flags=re.I)
+url = 'http://gdata.youtube.com/feeds/api/videos/%s?alt=json'
 
 #@hook.command(hook=r'(.*)', prefix=False)
 def youtube(inp):
     m = youtube_re.match(inp)
     if m:
-        data = ytdata(m.group(1))
-        return '\x02%(title)s\x02 - rated \x02%(average)s/%(max)s\x02 ' \
-                '(%(numRaters)s) - views \x02%(views)s\x02 - length \x02' \
-                '%(length)s\x02' % data
+        j = json.load(urllib2.urlopen(url % m.group(1)))['entry']
+        
+        out = '\x02%s\x02' % j['title']['$t']
+
+        rating = j.get('gd$rating')
+        if rating:
+            out += ' - rated \x02%.2f/%.1f\x02 (%d)' % (rating['average'],
+                    rating['max'], rating['numRaters'])
+
+        stats = j.get('yt$statistics')
+        if stats:
+            view_count = int(stats['viewCount'])
+            out += ' - views \x02%s\x02' % locale.format('%d', view_count, 1)
+
+        out += ' - length \x02'
+        length = int(j['media$group']['yt$duration']['seconds'])
+        if length / 3600: # > 1 hour
+            out += '%dh ' % (length / 3600)
+        if length / 60:
+            out += '%dm ' % (length / 60 % 60)
+        out += "%ds" % (length % 60)
+
+        return out