Add YoutubePlaylistIE class

This commit is contained in:
Ricardo Garcia 2008-07-25 12:55:01 +02:00
parent 020f7150aa
commit 0c2dc87d9e

View File

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