Add an extractor for vk.com (closes #1635)

youtube_dl/extractor/vk.py

@@ -0,0 +1,45 @@
+# encoding: utf-8
+import re
+import json
+
+from .common import InfoExtractor
+from ..utils import (
+    compat_str,
+    unescapeHTML,
+)
+
+
+class VKIE(InfoExtractor):
+    IE_NAME = u'vk.com'
+    _VALID_URL = r'https?://vk\.com/(?:videos.*?\?.*?z=)?video(?P<id>.*?)(?:\?|%2F|$)'
+
+    _TEST = {
+        u'url': u'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
+        u'md5': u'0deae91935c54e00003c2a00646315f0',
+        u'info_dict': {
+            u'id': u'162222515',
+            u'ext': u'flv',
+            u'title': u'ProtivoGunz - Хуёвая песня',
+            u'uploader': u'Noize MC',
+        },
+    }
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        video_id = mobj.group('id')
+        info_url = 'http://vk.com/al_video.php?act=show&al=1&video=%s' % video_id
+        info_page = self._download_webpage(info_url, video_id)
+        m_yt = re.search(r'src="(http://www.youtube.com/.*?)"', info_page)
+        if m_yt is not None:
+            self.to_screen(u'Youtube video detected')
+            return self.url_result(m_yt.group(1), 'Youtube')
+        vars_json = self._search_regex(r'var vars = ({.*?});', info_page, u'vars')
+        vars = json.loads(vars_json)
+
+        return {
+            'id': compat_str(vars['vid']),
+            'url': vars['url240'],
+            'title': unescapeHTML(vars['md_title']),
+            'thumbnail': vars['jpg'],
+            'uploader': vars['md_author'],
+        }