mirror of https://github.com/yt-dlp/yt-dlp.git
Add YoutubePlaylistIE class
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youtube-dl
62
youtube-dl
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@ -676,6 +676,66 @@ class MetacafeIE(InfoExtractor):
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'ext': video_extension,
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}]
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class YoutubePlaylistIE(InfoExtractor):
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"""Information Extractor for YouTube playlists."""
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_VALID_URL = r'(?:http://)?(?:\w+\.)?youtube.com/view_play_list\?p=(.+)'
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_TEMPLATE_URL = 'http://www.youtube.com/view_play_list?p=%s&page=%s'
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_VIDEO_INDICATOR = r'/watch\?v=(.+?)&'
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_MORE_PAGES_INDICATOR = r'class="pagerNotCurrent">Next</a>'
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_youtube_ie = None
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def __init__(self, youtube_ie, downloader=None):
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InfoExtractor.__init__(self, downloader)
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self._youtube_ie = youtube_ie
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@staticmethod
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def suitable(url):
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return (re.match(YoutubePlaylistIE._VALID_URL, url) is not None)
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def report_download_page(self, playlist_id, pagenum):
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"""Report attempt to download playlist page with given number."""
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self.to_stdout('[youtube] PL %s: Downloading page #%s' % (playlist_id, pagenum))
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def _real_initialize(self):
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self._youtube_ie.initialize()
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def _real_extract(self, url):
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# Extract playlist id
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mobj = re.match(self._VALID_URL, url)
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if mobj is None:
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self.to_stderr('ERROR: invalid url: %s' % url)
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return [None]
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# Download playlist pages
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playlist_id = mobj.group(1)
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video_ids = []
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pagenum = 1
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while True:
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self.report_download_page(playlist_id, pagenum)
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request = urllib2.Request(self._TEMPLATE_URL % (playlist_id, pagenum), None, std_headers)
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try:
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page = urllib2.urlopen(request).read()
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except (urllib2.URLError, httplib.HTTPException, socket.error), err:
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self.to_stderr('ERROR: unable to download webpage: %s' % str(err))
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return [None]
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# Extract video identifiers
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ids_in_page = set()
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for mobj in re.finditer(self._VIDEO_INDICATOR, page):
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ids_in_page.add(mobj.group(1))
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video_ids.extend(list(ids_in_page))
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if self._MORE_PAGES_INDICATOR not in page:
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break
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pagenum = pagenum + 1
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information = []
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for id in video_ids:
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information.extend(self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id))
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return information
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if __name__ == '__main__':
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try:
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# Modules needed only when running the main program
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@ -751,6 +811,7 @@ if __name__ == '__main__':
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# Information extractors
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youtube_ie = YoutubeIE()
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metacafe_ie = MetacafeIE(youtube_ie)
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youtube_pl_ie = YoutubePlaylistIE(youtube_ie)
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# File downloader
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fd = FileDownloader({
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@ -769,6 +830,7 @@ if __name__ == '__main__':
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'ignoreerrors': opts.ignoreerrors,
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'ratelimit': opts.ratelimit,
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})
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fd.add_info_extractor(youtube_pl_ie)
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fd.add_info_extractor(metacafe_ie)
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fd.add_info_extractor(youtube_ie)
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retcode = fd.download(args)
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