mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-11-27 10:31:29 +00:00
fix: youtube: Polymer UI and JSON endpoints for playlists
We already had a few copies of Polymer-style pagination handling logic for certain circumstances, but now we're forced into using it for all playlists since we can no longer disable Polymer. Refactor the logic to move it to the parent class for all entry lists (including e.g. search results, feeds, and list of playlists), and generify a bit to cover the child classes' use cases.
This commit is contained in:
Luc Ritchie
parent
651bae3d23
commit
9833e7a015
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@ -36,6 +36,7 @@
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get_element_by_attribute,
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get_element_by_id,
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int_or_none,
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js_to_json,
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mimetype2ext,
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orderedSet,
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parse_codecs,
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@ -70,6 +71,8 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
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_LOGIN_REQUIRED = False
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_PLAYLIST_ID_RE = r'(?:PL|LL|EC|UU|FL|RD|UL|TL|PU|OLAK5uy_)[0-9A-Za-z-_]{10,}'
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_INITIAL_DATA_RE = r'(?:window\["ytInitialData"\]|ytInitialData)\W?=\W?({.*?});'
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_YTCFG_DATA_RE = r"ytcfg.set\(({.*?})\)"
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_YOUTUBE_CLIENT_HEADERS = {
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'x-youtube-client-name': '1',
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@ -274,7 +277,6 @@ def warn(message):
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def _download_webpage_handle(self, *args, **kwargs):
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query = kwargs.get('query', {}).copy()
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query['disable_polymer'] = 'true'
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kwargs['query'] = query
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return super(YoutubeBaseInfoExtractor, self)._download_webpage_handle(
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*args, **compat_kwargs(kwargs))
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@ -297,15 +299,60 @@ def _real_initialize(self):
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class YoutubeEntryListBaseInfoExtractor(YoutubeBaseInfoExtractor):
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# Extract entries from page with "Load more" button
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def _find_entries_in_json(self, extracted):
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entries = []
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c = {}
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def _real_find(obj):
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if obj is None or isinstance(obj, str):
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return
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if type(obj) is list:
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for elem in obj:
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_real_find(elem)
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if type(obj) is dict:
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if self._is_entry(obj):
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entries.append(obj)
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return
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if 'continuationCommand' in obj:
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c['continuation'] = obj
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return
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for _, o in obj.items():
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_real_find(o)
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_real_find(extracted)
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return entries, try_get(c, lambda x: x["continuation"])
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def _entries(self, page, playlist_id):
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more_widget_html = content_html = page
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seen = []
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yt_conf = {}
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for m in re.finditer(self._YTCFG_DATA_RE, page):
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parsed = self._parse_json(m.group(1), playlist_id,
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transform_source=js_to_json, fatal=False)
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if parsed:
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yt_conf.update(parsed)
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data_json = self._parse_json(self._search_regex(self._INITIAL_DATA_RE, page, 'ytInitialData'), None)
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for page_num in itertools.count(1):
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for entry in self._process_page(content_html):
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entries, continuation = self._find_entries_in_json(data_json)
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processed = self._process_entries(entries, seen)
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if not processed:
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break
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for entry in processed:
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yield entry
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mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
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if not mobj:
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if not continuation or not yt_conf:
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break
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continuation_token = try_get(continuation, lambda x: x['continuationCommand']['token'])
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continuation_url = try_get(continuation, lambda x: x['commandMetadata']['webCommandMetadata']['apiUrl'])
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if not continuation_token or not continuation_url:
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break
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count = 0
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@ -314,12 +361,22 @@ def _entries(self, page, playlist_id):
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try:
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# Downloading page may result in intermittent 5xx HTTP error
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# that is usually worked around with a retry
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more = self._download_json(
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'https://www.youtube.com/%s' % mobj.group('more'), playlist_id,
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'Downloading page #%s%s'
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% (page_num, ' (retry #%d)' % count if count else ''),
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data_json = self._download_json(
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'https://www.youtube.com%s' % continuation_url,
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playlist_id,
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'Downloading page #%s%s' % (page_num, ' (retry #%d)' % count if count else ''),
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transform_source=uppercase_escape,
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headers=self._YOUTUBE_CLIENT_HEADERS)
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query={
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'key': try_get(yt_conf, lambda x: x['INNERTUBE_API_KEY'])
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},
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data=bytes(json.dumps({
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'context': try_get(yt_conf, lambda x: x['INNERTUBE_CONTEXT']),
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'continuation': continuation_token
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}), encoding='utf-8'),
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headers={
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'Content-Type': 'application/json'
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}
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)
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break
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except ExtractorError as e:
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if isinstance(e.cause, compat_HTTPError) and e.cause.code in (500, 503):
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@ -328,31 +385,30 @@ def _entries(self, page, playlist_id):
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continue
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raise
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content_html = more['content_html']
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if not content_html.strip():
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# Some webpages show a "Load more" button but they don't
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# have more videos
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break
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more_widget_html = more['load_more_widget_html']
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def _extract_title(self, renderer):
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title = try_get(renderer, lambda x: x['title']['runs'][0]['text'], compat_str)
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if title:
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return title
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return try_get(renderer, lambda x: x['title']['simpleText'], compat_str)
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class YoutubePlaylistBaseInfoExtractor(YoutubeEntryListBaseInfoExtractor):
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def _process_page(self, content):
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for video_id, video_title in self.extract_videos_from_page(content):
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yield self.url_result(video_id, 'Youtube', video_id, video_title)
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def _is_entry(self, obj):
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return 'videoId' in obj
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def extract_videos_from_page_impl(self, video_re, page, ids_in_page, titles_in_page):
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for mobj in re.finditer(video_re, page):
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# The link with index 0 is not the first video of the playlist (not sure if still actual)
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if 'index' in mobj.groupdict() and mobj.group('id') == '0':
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def _process_entries(self, entries, seen):
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ids_in_page = []
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titles_in_page = []
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for renderer in entries:
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video_id = try_get(renderer, lambda x: x['videoId'])
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video_title = self._extract_title(renderer)
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if video_id is None or video_title is None:
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# we do not have a videoRenderer or title extraction broke
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continue
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video_id = mobj.group('id')
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video_title = unescapeHTML(
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mobj.group('title')) if 'title' in mobj.groupdict() else None
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if video_title:
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video_title = video_title.strip()
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if video_title == '► Play all':
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video_title = None
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try:
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idx = ids_in_page.index(video_id)
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if video_title and not titles_in_page[idx]:
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@ -361,19 +417,16 @@ def extract_videos_from_page_impl(self, video_re, page, ids_in_page, titles_in_p
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ids_in_page.append(video_id)
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titles_in_page.append(video_title)
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def extract_videos_from_page(self, page):
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ids_in_page = []
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titles_in_page = []
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self.extract_videos_from_page_impl(
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self._VIDEO_RE, page, ids_in_page, titles_in_page)
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return zip(ids_in_page, titles_in_page)
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for video_id, video_title in zip(ids_in_page, titles_in_page):
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yield self.url_result(video_id, 'Youtube', video_id, video_title)
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class YoutubePlaylistsBaseInfoExtractor(YoutubeEntryListBaseInfoExtractor):
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def _process_page(self, content):
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for playlist_id in orderedSet(re.findall(
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r'<h3[^>]+class="[^"]*yt-lockup-title[^"]*"[^>]*><a[^>]+href="/?playlist\?list=([0-9A-Za-z-_]{10,})"',
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content)):
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def _is_entry(self, obj):
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return 'playlistId' in obj
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def _process_entries(self, entries, seen):
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for playlist_id in orderedSet(try_get(r, lambda x: x['playlistId']) for r in entries):
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yield self.url_result(
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'https://www.youtube.com/playlist?list=%s' % playlist_id, 'YoutubePlaylist')
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@ -3240,11 +3293,7 @@ class YoutubePlaylistsIE(YoutubePlaylistsBaseInfoExtractor):
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}]
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class YoutubeSearchBaseInfoExtractor(YoutubePlaylistBaseInfoExtractor):
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_VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})(?:[^"]*"[^>]+\btitle="(?P<title>[^"]+))?'
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class YoutubeSearchIE(SearchInfoExtractor, YoutubeSearchBaseInfoExtractor):
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class YoutubeSearchIE(SearchInfoExtractor, YoutubePlaylistBaseInfoExtractor):
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IE_DESC = 'YouTube.com searches'
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# there doesn't appear to be a real limit, for example if you search for
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# 'python' you get more than 8.000.000 results
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@ -3341,11 +3390,10 @@ class YoutubeSearchDateIE(YoutubeSearchIE):
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_SEARCH_PARAMS = 'CAI%3D'
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class YoutubeSearchURLIE(YoutubeSearchBaseInfoExtractor):
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class YoutubeSearchURLIE(YoutubePlaylistBaseInfoExtractor):
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IE_DESC = 'YouTube.com search URLs'
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IE_NAME = 'youtube:search_url'
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_VALID_URL = r'https?://(?:www\.)?youtube\.com/results\?(.*?&)?(?:search_query|q)=(?P<query>[^&]+)(?:[&]|$)'
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_SEARCH_DATA = r'(?:window\["ytInitialData"\]|ytInitialData)\W?=\W?({.*?});'
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_TESTS = [{
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'url': 'https://www.youtube.com/results?baz=bar&search_query=youtube-dl+test+video&filters=video&lclk=video',
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'playlist_mincount': 5,
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@ -3357,28 +3405,14 @@ class YoutubeSearchURLIE(YoutubeSearchBaseInfoExtractor):
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'only_matching': True,
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}]
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def _find_videos_in_json(self, extracted):
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videos = []
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def _real_find(obj):
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if obj is None or isinstance(obj, str):
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return
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if type(obj) is list:
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for elem in obj:
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_real_find(elem)
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if type(obj) is dict:
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def _process_json_dict(self, obj, videos, c):
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if "videoId" in obj:
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videos.append(obj)
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return
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for _, o in obj.items():
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_real_find(o)
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_real_find(extracted)
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return videos
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if "nextContinuationData" in obj:
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c["continuation"] = obj["nextContinuationData"]
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return
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def extract_videos_from_page_impl(self, page, ids_in_page, titles_in_page):
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search_response = self._parse_json(self._search_regex(self._SEARCH_DATA, page, 'ytInitialData'), None)
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@ -3413,7 +3447,8 @@ def _real_extract(self, url):
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mobj = re.match(self._VALID_URL, url)
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query = compat_urllib_parse_unquote_plus(mobj.group('query'))
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webpage = self._download_webpage(url, query)
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return self.playlist_result(self._process_page(webpage), playlist_title=query)
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data_json = self._process_initial_data(webpage)
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return self.playlist_result(self._process_data(data_json), playlist_title=query)
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class YoutubeShowIE(YoutubePlaylistsBaseInfoExtractor):
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@ -3435,14 +3470,12 @@ def _real_extract(self, url):
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'https://www.youtube.com/show/%s/playlists' % playlist_id)
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class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
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class YoutubeFeedsInfoExtractor(YoutubePlaylistBaseInfoExtractor):
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"""
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Base class for feed extractors
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Subclasses must define the _FEED_NAME and _PLAYLIST_TITLE properties.
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"""
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_LOGIN_REQUIRED = True
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_FEED_DATA = r'(?:window\["ytInitialData"\]|ytInitialData)\W?=\W?({.*?});'
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_YTCFG_DATA = r"ytcfg.set\(({.*?})\)"
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@property
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def IE_NAME(self):
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@ -3451,53 +3484,15 @@ def IE_NAME(self):
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def _real_initialize(self):
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self._login()
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def _find_videos_in_json(self, extracted):
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videos = []
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c = {}
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def _real_find(obj):
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if obj is None or isinstance(obj, str):
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return
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if type(obj) is list:
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for elem in obj:
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_real_find(elem)
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if type(obj) is dict:
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if "videoId" in obj:
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videos.append(obj)
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return
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if "nextContinuationData" in obj:
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c["continuation"] = obj["nextContinuationData"]
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return
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for _, o in obj.items():
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_real_find(o)
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_real_find(extracted)
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return videos, try_get(c, lambda x: x["continuation"])
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def _entries(self, page):
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info = []
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yt_conf = self._parse_json(self._search_regex(self._YTCFG_DATA, page, 'ytcfg.set', default="null"), None, fatal=False)
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search_response = self._parse_json(self._search_regex(self._FEED_DATA, page, 'ytInitialData'), None)
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for page_num in itertools.count(1):
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video_info, continuation = self._find_videos_in_json(search_response)
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def _process_entries(self, entries, seen):
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new_info = []
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for v in video_info:
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for v in entries:
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v_id = try_get(v, lambda x: x['videoId'])
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if not v_id:
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continue
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have_video = False
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for old in info:
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for old in seen:
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if old['videoId'] == v_id:
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have_video = True
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break
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@ -3506,41 +3501,18 @@ def _entries(self, page):
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new_info.append(v)
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if not new_info:
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break
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info.extend(new_info)
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return
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seen.extend(new_info)
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for video in new_info:
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yield self.url_result(try_get(video, lambda x: x['videoId']), YoutubeIE.ie_key(), video_title=try_get(video, lambda x: x['title']['runs'][0]['text']) or try_get(video, lambda x: x['title']['simpleText']))
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if not continuation or not yt_conf:
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break
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search_response = self._download_json(
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'https://www.youtube.com/browse_ajax', self._PLAYLIST_TITLE,
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'Downloading page #%s' % page_num,
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transform_source=uppercase_escape,
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query={
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"ctoken": try_get(continuation, lambda x: x["continuation"]),
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"continuation": try_get(continuation, lambda x: x["continuation"]),
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"itct": try_get(continuation, lambda x: x["clickTrackingParams"])
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},
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headers={
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"X-YouTube-Client-Name": try_get(yt_conf, lambda x: x["INNERTUBE_CONTEXT_CLIENT_NAME"]),
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"X-YouTube-Client-Version": try_get(yt_conf, lambda x: x["INNERTUBE_CONTEXT_CLIENT_VERSION"]),
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"X-Youtube-Identity-Token": try_get(yt_conf, lambda x: x["ID_TOKEN"]),
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"X-YouTube-Device": try_get(yt_conf, lambda x: x["DEVICE"]),
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"X-YouTube-Page-CL": try_get(yt_conf, lambda x: x["PAGE_CL"]),
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"X-YouTube-Page-Label": try_get(yt_conf, lambda x: x["PAGE_BUILD_LABEL"]),
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"X-YouTube-Variants-Checksum": try_get(yt_conf, lambda x: x["VARIANTS_CHECKSUM"]),
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})
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yield self.url_result(try_get(video, lambda x: x['videoId']), YoutubeIE.ie_key(), video_title=self._extract_title(video))
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def _real_extract(self, url):
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page = self._download_webpage(
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'https://www.youtube.com/feed/%s' % self._FEED_NAME,
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self._PLAYLIST_TITLE)
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return self.playlist_result(
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self._entries(page), playlist_title=self._PLAYLIST_TITLE)
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return self.playlist_result(self._entries(page, self._PLAYLIST_TITLE),
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playlist_title=self._PLAYLIST_TITLE)
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class YoutubeWatchLaterIE(YoutubePlaylistIE):
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