[youtube]: add YoutubeShowIE (closes #14)

It just extracts the playlists urls for each season

test/test_youtube_lists.py

@@ -8,7 +8,7 @@ import json
 import os
 sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
-from youtube_dl.extractor import YoutubeUserIE, YoutubePlaylistIE, YoutubeIE, YoutubeChannelIE
+from youtube_dl.extractor import YoutubeUserIE, YoutubePlaylistIE, YoutubeIE, YoutubeChannelIE, YoutubeShowIE
 from youtube_dl.utils import *
 
 from helper import FakeYDL
@@ -88,5 +88,11 @@ class TestYoutubeLists(unittest.TestCase):
         result = ie.extract('PLtPgu7CB4gbY9oDN3drwC3cMbJggS7dKl')[0]
         self.assertEqual(len(result['entries']), 2)
 
+    def test_youtube_show(self):
+        dl = FakeYDL()
+        ie = YoutubeShowIE(dl)
+        result = ie.extract('http://www.youtube.com/show/airdisasters')
+        self.assertTrue(len(result) >= 4)
+
 if __name__ == '__main__':
     unittest.main()

youtube_dl/extractor/__init__.py

@@ -67,7 +67,7 @@ from .yahoo import YahooIE, YahooSearchIE
 from .youjizz import YouJizzIE
 from .youku import YoukuIE
 from .youporn import YouPornIE
-from .youtube import YoutubeIE, YoutubePlaylistIE, YoutubeSearchIE, YoutubeUserIE, YoutubeChannelIE
+from .youtube import YoutubeIE, YoutubePlaylistIE, YoutubeSearchIE, YoutubeUserIE, YoutubeChannelIE, YoutubeShowIE
 from .zdf import ZDFIE
 
 

youtube_dl/extractor/youtube.py

@@ -853,3 +853,17 @@ class YoutubeSearchIE(SearchInfoExtractor):
             video_ids = video_ids[:n]
         videos = [self.url_result('http://www.youtube.com/watch?v=%s' % id, 'Youtube') for id in video_ids]
         return self.playlist_result(videos, query)
+
+
+class YoutubeShowIE(InfoExtractor):
+    _VALID_URL = r'https?://www\.youtube\.com/show/(.*)'
+    IE_NAME = u'youtube:show'
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        show_name = mobj.group(1)
+        webpage = self._download_webpage(url, show_name, u'Downloading show webpage')
+        # There's one playlist for each season of the show
+        m_seasons = list(re.finditer(r'href="(/playlist\?list=.*?)"', webpage))
+        self.to_screen(u'%s: Found %s seasons' % (show_name, len(m_seasons)))
+        return [self.url_result('https://www.youtube.com' + season.group(1), 'YoutubePlaylist') for season in m_seasons]