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[ustream] Simplify channel extraction

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the ChannelParser has been moved to a new function in utils get_meta_content
Instead of the SocialStreamParser now it uses a regex
This commit is contained in:
Jaime Marquínez Ferrándiz 2013-09-13 22:05:29 +02:00
parent 74ac9bdd82
commit a921f40799
3 changed files with 70 additions and 59 deletions
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49
youtube_dl/extractor/ustream.py
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@ -4,7 +4,7 @@ import re
from .common import InfoExtractor
from ..utils import (
compat_urlparse,
compat_html_parser,
get_meta_content,
)
@ -49,40 +49,6 @@ class UstreamIE(InfoExtractor):
}
return info
# More robust than regular expressions
class ChannelParser(compat_html_parser.HTMLParser):
"""
<meta name="ustream:channel_id" content="1234">
"""
channel_id = None
def handle_starttag(self, tag, attrs):
if tag != 'meta':
return
values = dict(attrs)
if values.get('name') != 'ustream:channel_id':
return
value = values.get('content', '')
if value.isdigit():
self.channel_id = value
class SocialstreamParser(compat_html_parser.HTMLParser):
"""
<li class="content123 video" data-content-id="123" data-length="1452"
data-href="/recorded/123" data-og-url="/recorded/123">
"""
def __init__(self):
compat_html_parser.HTMLParser.__init__(self)
self.content_ids = []
def handle_starttag(self, tag, attrs):
if tag != 'li':
return
for (attr, value) in attrs:
if attr == 'data-content-id' and value.isdigit():
self.content_ids.append(value)
class UstreamChannelIE(InfoExtractor):
_VALID_URL = r'https?://www\.ustream\.tv/channel/(?P<slug>.+)'
IE_NAME = u'ustream:channel'
@ -90,21 +56,16 @@ class UstreamChannelIE(InfoExtractor):
def _real_extract(self, url):
m = re.match(self._VALID_URL, url)
slug = m.group('slug')
webpage = self._download_webpage(url, slug)
channel_id = get_meta_content('ustream:channel_id', webpage)
p = ChannelParser()
p.feed(self._download_webpage(url, slug))
p.close()
channel_id = p.channel_id
p = SocialstreamParser()
BASE = 'http://www.ustream.tv'
next_url = '/ajax/socialstream/videos/%s/1.json' % channel_id
video_ids = []
while next_url:
reply = json.loads(self._download_webpage(compat_urlparse.urljoin(BASE, next_url), channel_id))
p.feed(reply['data'])
video_ids.extend(re.findall(r'data-content-id="(\d.*)"', reply['data']))
next_url = reply['nextUrl']
p.close()
video_ids = p.content_ids
urls = ['http://www.ustream.tv/recorded/' + vid for vid in video_ids]
url_entries = [self.url_result(eurl, 'Ustream') for eurl in urls]