New IE: YouTube channels (closes #396)

This commit is contained in:
Filippo Valsorda 2012-10-14 13:48:18 +02:00
parent 10daa766a1
commit 902b2a0a45
2 changed files with 51 additions and 0 deletions

View File

@ -1578,6 +1578,56 @@ def _real_extract(self, url):
return
class YoutubeChannelIE(InfoExtractor):
"""Information Extractor for YouTube channels."""
_VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)(?:/.*)?$"
_TEMPLATE_URL = 'http://www.youtube.com/channel/%s/videos?sort=da&flow=list&view=0&page=%s&gl=US&hl=en'
_MORE_PAGES_INDICATOR = r'yt-uix-button-content">Next' # TODO
IE_NAME = u'youtube:channel'
def report_download_page(self, channel_id, pagenum):
"""Report attempt to download channel page with given number."""
self._downloader.to_screen(u'[youtube] Channel %s: Downloading page #%s' % (channel_id, pagenum))
def _real_extract(self, url):
# Extract channel id
mobj = re.match(self._VALID_URL, url)
if mobj is None:
self._downloader.trouble(u'ERROR: invalid url: %s' % url)
return
# Download channel pages
channel_id = mobj.group(1)
video_ids = []
pagenum = 1
while True:
self.report_download_page(channel_id, pagenum)
url = self._TEMPLATE_URL % (channel_id, pagenum)
request = urllib2.Request(url)
try:
page = urllib2.urlopen(request).read()
except (urllib2.URLError, httplib.HTTPException, socket.error), err:
self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err))
return
# Extract video identifiers
ids_in_page = []
for mobj in re.finditer(r'href="/watch\?v=([0-9A-Za-z_-]+)&', page):
if mobj.group(1) not in ids_in_page:
ids_in_page.append(mobj.group(1))
video_ids.extend(ids_in_page)
if re.search(self._MORE_PAGES_INDICATOR, page) is None:
break
pagenum = pagenum + 1
for id in video_ids:
self._downloader.download(['http://www.youtube.com/watch?v=%s' % id])
return
class YoutubeUserIE(InfoExtractor):
"""Information Extractor for YouTube users."""

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@ -328,6 +328,7 @@ def gen_extractors():
"""
return [
YoutubePlaylistIE(),
YoutubeChannelIE(),
YoutubeUserIE(),
YoutubeSearchIE(),
YoutubeIE(),