Add an extractor for Metacritic

youtube_dl/extractor/metacritic.py

@@ -0,0 +1,55 @@
+import re
+import xml.etree.ElementTree
+import operator
+
+from .common import InfoExtractor
+
+
+class MetacriticIE(InfoExtractor):
+    _VALID_URL = r'https?://www\.metacritic\.com/.+?/trailers/(?P<id>\d+)'
+
+    _TEST = {
+        u'url': u'http://www.metacritic.com/game/playstation-4/infamous-second-son/trailers/3698222',
+        u'file': u'3698222.mp4',
+        u'info_dict': {
+            u'title': u'inFamous: Second Son - inSide Sucker Punch: Smoke & Mirrors',
+            u'description': u'Take a peak behind-the-scenes to see how Sucker Punch brings smoke into the universe of inFAMOUS Second Son on the PS4.',
+            u'duration': 221,
+        },
+    }
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        video_id = mobj.group('id')
+        webpage = self._download_webpage(url, video_id)
+        # The xml is not well formatted, there are raw '&'
+        info_xml = self._download_webpage('http://www.metacritic.com/video_data?video=' + video_id,
+            video_id, u'Downloading info xml').replace('&', '&amp;')
+        info = xml.etree.ElementTree.fromstring(info_xml.encode('utf-8'))
+
+        clip = next(c for c in info.findall('playList/clip') if c.find('id').text == video_id)
+        formats = []
+        for videoFile in clip.findall('httpURI/videoFile'):
+            rate_str = videoFile.find('rate').text
+            video_url = videoFile.find('filePath').text
+            formats.append({
+                'url': video_url,
+                'ext': 'mp4',
+                'format_id': rate_str,
+                'rate': int(rate_str),
+            })
+        formats.sort(key=operator.itemgetter('rate'))
+
+        description = self._html_search_regex(r'<b>Description:</b>(.*?)</p>',
+            webpage, u'description', flags=re.DOTALL)
+
+        info = {
+            'id': video_id,
+            'title': clip.find('title').text,
+            'formats': formats,
+            'description': description,
+            'duration': int(clip.find('duration').text),
+        }
+        # TODO: Remove when #980 has been merged
+        info.update(formats[-1])
+        return info