Add auxiliary methods to InfoExtractor to set the '_type' key and use them for some playlist IEs

test/test_youtube_lists.py

@@ -36,31 +36,37 @@ def extract_info(self, url):
         return url
 
 class TestYoutubeLists(unittest.TestCase):
+    def assertIsPlaylist(self,info):
+        """Make sure the info has '_type' set to 'playlist'"""
+        self.assertEqual(info['_type'], 'playlist')
+
     def test_youtube_playlist(self):
         dl = FakeDownloader()
         ie = YoutubePlaylistIE(dl)
-        ie.extract('https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re')
-        ytie_results = [YoutubeIE()._extract_id(url) for url in dl.result]
+        result = ie.extract('https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re')[0]
+        self.assertIsPlaylist(result)
+        ytie_results = [YoutubeIE()._extract_id(url['url']) for url in result['entries']]
         self.assertEqual(ytie_results, [ 'bV9L5Ht9LgY', 'FXxLjLQi3Fg', 'tU3Bgo5qJZE'])
 
     def test_issue_673(self):
         dl = FakeDownloader()
         ie = YoutubePlaylistIE(dl)
-        ie.extract('PLBB231211A4F62143')
-        self.assertTrue(len(dl.result) > 40)
+        result = ie.extract('PLBB231211A4F62143')[0]
+        self.assertTrue(len(result['entries']) > 40)
 
     def test_youtube_playlist_long(self):
         dl = FakeDownloader()
         ie = YoutubePlaylistIE(dl)
-        ie.extract('https://www.youtube.com/playlist?list=UUBABnxM4Ar9ten8Mdjj1j0Q')
-        self.assertTrue(len(dl.result) >= 799)
+        result = ie.extract('https://www.youtube.com/playlist?list=UUBABnxM4Ar9ten8Mdjj1j0Q')[0]
+        self.assertIsPlaylist(result)
+        self.assertTrue(len(result['entries']) >= 799)
 
     def test_youtube_playlist_with_deleted(self):
         #651
         dl = FakeDownloader()
         ie = YoutubePlaylistIE(dl)
-        ie.extract('https://www.youtube.com/playlist?list=PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC')
-        ytie_results = [YoutubeIE()._extract_id(url) for url in dl.result]
+        result = ie.extract('https://www.youtube.com/playlist?list=PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC')[0]
+        ytie_results = [YoutubeIE()._extract_id(url['url']) for url in result['entries']]
         self.assertFalse('pElCt5oNDuI' in ytie_results)
         self.assertFalse('KdPEApIVdWM' in ytie_results)
 
@@ -68,10 +74,11 @@ def test_youtube_course(self):
         dl = FakeDownloader()
         ie = YoutubePlaylistIE(dl)
         # TODO find a > 100 (paginating?) videos course
-        ie.extract('https://www.youtube.com/course?list=ECUl4u3cNGP61MdtwGTqZA0MreSaDybji8')
-        self.assertEqual(YoutubeIE()._extract_id(dl.result[0]), 'j9WZyLZCBzs')
-        self.assertEqual(len(dl.result), 25)
-        self.assertEqual(YoutubeIE()._extract_id(dl.result[-1]), 'rYefUsYuEp0')
+        result = ie.extract('https://www.youtube.com/course?list=ECUl4u3cNGP61MdtwGTqZA0MreSaDybji8')[0]
+        entries = result['entries']
+        self.assertEqual(YoutubeIE()._extract_id(entries[0]['url']), 'j9WZyLZCBzs')
+        self.assertEqual(len(entries), 25)
+        self.assertEqual(YoutubeIE()._extract_id(entries[-1]['url']), 'rYefUsYuEp0')
 
     def test_youtube_channel(self):
         # I give up, please find a channel that does paginate and test this like test_youtube_playlist_long
@@ -80,8 +87,8 @@ def test_youtube_channel(self):
     def test_youtube_user(self):
         dl = FakeDownloader()
         ie = YoutubeUserIE(dl)
-        ie.extract('https://www.youtube.com/user/TheLinuxFoundation')
-        self.assertTrue(len(dl.result) >= 320)
+        result = ie.extract('https://www.youtube.com/user/TheLinuxFoundation')[0]
+        self.assertTrue(len(result['entries']) >= 320)
 
 if __name__ == '__main__':
     unittest.main()

youtube_dl/InfoExtractors.py

@@ -128,6 +128,24 @@ def _download_webpage(self, url_or_request, video_id, note=None, errnote=None):
         urlh = self._request_webpage(url_or_request, video_id, note, errnote)
         webpage_bytes = urlh.read()
         return webpage_bytes.decode('utf-8', 'replace')
+        
+    #Methods for following #608
+    #They set the correct value of the '_type' key
+    def video_result(self, video_info):
+        """Returns a video"""
+        video_info['_type'] = 'video'
+        return video_info
+    def url_result(self, url, ie=None):
+        """Returns a url that points to a page that should be processed"""
+        #TODO: ie should be the class used for getting the info
+        video_info = {'_type': 'url',
+                      'url': url}
+        return video_info
+    def playlist_result(self, entries):
+        """Returns a playlist"""
+        video_info = {'_type': 'playlist',
+                      'entries': entries}
+        return video_info
 
 
 class YoutubeIE(InfoExtractor):
@@ -1756,7 +1774,8 @@ def _real_extract(self, url):
         else:
             self._downloader.to_screen(u'[youtube] PL %s: Found %i videos, downloading %i' % (playlist_id, total, len(videos)))
 
-        return self._downloader.extract_info_iterable(videos)
+        url_results = [self.url_result(url) for url in videos]
+        return [self.playlist_result(url_results)]
 
 
 class YoutubeChannelIE(InfoExtractor):
@@ -1807,7 +1826,8 @@ def _real_extract(self, url):
         self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
 
         urls = ['http://www.youtube.com/watch?v=%s' % id for id in video_ids]
-        return self._downloader.extract_info_iterable(urls)
+        url_entries = [self.url_result(url) for url in urls]
+        return [self.playlist_result(url_entries)]
 
 
 class YoutubeUserIE(InfoExtractor):
@@ -1890,7 +1910,8 @@ def _real_extract(self, url):
                 (username, all_ids_count, len(video_ids)))
 
         urls = ['http://www.youtube.com/watch?v=%s' % video_id for video_id in video_ids]
-        return self._downloader.extract_info_iterable(urls)
+        url_results = [self.url_result(url) for url in urls]
+        return [self.playlist_result(url_results)]
 
 
 class BlipTVUserIE(InfoExtractor):
@@ -1981,7 +2002,8 @@ def _real_extract(self, url):
                 (self.IE_NAME, username, all_ids_count, len(video_ids)))
 
         urls = [u'http://blip.tv/%s' % video_id for video_id in video_ids]
-        return self._downloader.extract_info_iterable(urls)
+        url_entries = [self.url_result(url) for url in urls]
+        return [self.playlist_result(url_entries)]
 
 
 class DepositFilesIE(InfoExtractor):