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
1 changed files with 126 additions and 154 deletions
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@ -36,6 +36,7 @@ from ..utils import (
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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 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
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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 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
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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 @@ class YoutubeEntryListBaseInfoExtractor(YoutubeBaseInfoExtractor):
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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 @@ class YoutubeEntryListBaseInfoExtractor(YoutubeBaseInfoExtractor):
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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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video_title = video_title.strip()
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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 @@ class YoutubePlaylistBaseInfoExtractor(YoutubeEntryListBaseInfoExtractor):
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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 _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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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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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 @@ class YoutubeSearchURLIE(YoutubeSearchBaseInfoExtractor):
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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 @@ class YoutubeShowIE(YoutubePlaylistsBaseInfoExtractor):
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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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@ -3451,96 +3484,35 @@ class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
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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 _process_entries(self, entries, seen):
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new_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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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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have_video = False
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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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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 not have_video:
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new_info.append(v)
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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 not new_info:
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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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new_info = []
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for v in video_info:
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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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if old['videoId'] == v_id:
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have_video = True
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break
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if not have_video:
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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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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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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=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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