mirror of
https://github.com/l1ving/youtube-dl
synced 2024-11-21 20:42:50 +08:00
278 lines
11 KiB
Python
278 lines
11 KiB
Python
from __future__ import unicode_literals
|
|
|
|
import re
|
|
|
|
from .common import InfoExtractor
|
|
from ..utils import ExtractorError
|
|
|
|
|
|
class Channel9IE(InfoExtractor):
|
|
'''
|
|
Common extractor for channel9.msdn.com.
|
|
|
|
The type of provided URL (video or playlist) is determined according to
|
|
meta Search.PageType from web page HTML rather than URL itself, as it is
|
|
not always possible to do.
|
|
'''
|
|
IE_DESC = 'Channel 9'
|
|
IE_NAME = 'channel9'
|
|
_VALID_URL = r'https?://(?:www\.)?channel9\.msdn\.com/(?P<contentpath>.+)/?'
|
|
|
|
_TESTS = [
|
|
{
|
|
'url': 'http://channel9.msdn.com/Events/TechEd/Australia/2013/KOS002',
|
|
'md5': 'bbd75296ba47916b754e73c3a4bbdf10',
|
|
'info_dict': {
|
|
'id': 'Events/TechEd/Australia/2013/KOS002',
|
|
'ext': 'mp4',
|
|
'title': 'Developer Kick-Off Session: Stuff We Love',
|
|
'description': 'md5:c08d72240b7c87fcecafe2692f80e35f',
|
|
'duration': 4576,
|
|
'thumbnail': 'http://video.ch9.ms/ch9/9d51/03902f2d-fc97-4d3c-b195-0bfe15a19d51/KOS002_220.jpg',
|
|
'session_code': 'KOS002',
|
|
'session_day': 'Day 1',
|
|
'session_room': 'Arena 1A',
|
|
'session_speakers': ['Ed Blankenship', 'Andrew Coates', 'Brady Gaster', 'Patrick Klug', 'Mads Kristensen'],
|
|
},
|
|
},
|
|
{
|
|
'url': 'http://channel9.msdn.com/posts/Self-service-BI-with-Power-BI-nuclear-testing',
|
|
'md5': 'b43ee4529d111bc37ba7ee4f34813e68',
|
|
'info_dict': {
|
|
'id': 'posts/Self-service-BI-with-Power-BI-nuclear-testing',
|
|
'ext': 'mp4',
|
|
'title': 'Self-service BI with Power BI - nuclear testing',
|
|
'description': 'md5:d1e6ecaafa7fb52a2cacdf9599829f5b',
|
|
'duration': 1540,
|
|
'thumbnail': 'http://video.ch9.ms/ch9/87e1/0300391f-a455-4c72-bec3-4422f19287e1/selfservicenuk_512.jpg',
|
|
'authors': ['Mike Wilmot'],
|
|
},
|
|
}
|
|
]
|
|
|
|
_RSS_URL = 'http://channel9.msdn.com/%s/RSS'
|
|
|
|
# Sorted by quality
|
|
_known_formats = ['MP3', 'MP4', 'Mid Quality WMV', 'Mid Quality MP4', 'High Quality WMV', 'High Quality MP4']
|
|
|
|
def _restore_bytes(self, formatted_size):
|
|
if not formatted_size:
|
|
return 0
|
|
m = re.match(r'^(?P<size>\d+(?:\.\d+)?)\s+(?P<units>[a-zA-Z]+)', formatted_size)
|
|
if not m:
|
|
return 0
|
|
units = m.group('units')
|
|
try:
|
|
exponent = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'].index(units.upper())
|
|
except ValueError:
|
|
return 0
|
|
size = float(m.group('size'))
|
|
return int(size * (1024 ** exponent))
|
|
|
|
def _formats_from_html(self, html):
|
|
FORMAT_REGEX = r'''
|
|
(?x)
|
|
<a\s+href="(?P<url>[^"]+)">(?P<quality>[^<]+)</a>\s*
|
|
<span\s+class="usage">\((?P<note>[^\)]+)\)</span>\s*
|
|
(?:<div\s+class="popup\s+rounded">\s*
|
|
<h3>File\s+size</h3>\s*(?P<filesize>.*?)\s*
|
|
</div>)? # File size part may be missing
|
|
'''
|
|
# Extract known formats
|
|
formats = [{
|
|
'url': x.group('url'),
|
|
'format_id': x.group('quality'),
|
|
'format_note': x.group('note'),
|
|
'format': '%s (%s)' % (x.group('quality'), x.group('note')),
|
|
'filesize': self._restore_bytes(x.group('filesize')), # File size is approximate
|
|
'preference': self._known_formats.index(x.group('quality')),
|
|
'vcodec': 'none' if x.group('note') == 'Audio only' else None,
|
|
} for x in list(re.finditer(FORMAT_REGEX, html)) if x.group('quality') in self._known_formats]
|
|
|
|
self._sort_formats(formats)
|
|
|
|
return formats
|
|
|
|
def _extract_title(self, html):
|
|
title = self._html_search_meta('title', html, 'title')
|
|
if title is None:
|
|
title = self._og_search_title(html)
|
|
TITLE_SUFFIX = ' (Channel 9)'
|
|
if title is not None and title.endswith(TITLE_SUFFIX):
|
|
title = title[:-len(TITLE_SUFFIX)]
|
|
return title
|
|
|
|
def _extract_description(self, html):
|
|
DESCRIPTION_REGEX = r'''(?sx)
|
|
<div\s+class="entry-content">\s*
|
|
<div\s+id="entry-body">\s*
|
|
(?P<description>.+?)\s*
|
|
</div>\s*
|
|
</div>
|
|
'''
|
|
m = re.search(DESCRIPTION_REGEX, html)
|
|
if m is not None:
|
|
return m.group('description')
|
|
return self._html_search_meta('description', html, 'description')
|
|
|
|
def _extract_duration(self, html):
|
|
m = re.search(r'"length": *"(?P<hours>\d{2}):(?P<minutes>\d{2}):(?P<seconds>\d{2})"', html)
|
|
return ((int(m.group('hours')) * 60 * 60) + (int(m.group('minutes')) * 60) + int(m.group('seconds'))) if m else None
|
|
|
|
def _extract_slides(self, html):
|
|
m = re.search(r'<a href="(?P<slidesurl>[^"]+)" class="slides">Slides</a>', html)
|
|
return m.group('slidesurl') if m is not None else None
|
|
|
|
def _extract_zip(self, html):
|
|
m = re.search(r'<a href="(?P<zipurl>[^"]+)" class="zip">Zip</a>', html)
|
|
return m.group('zipurl') if m is not None else None
|
|
|
|
def _extract_avg_rating(self, html):
|
|
m = re.search(r'<p class="avg-rating">Avg Rating: <span>(?P<avgrating>[^<]+)</span></p>', html)
|
|
return float(m.group('avgrating')) if m is not None else 0
|
|
|
|
def _extract_rating_count(self, html):
|
|
m = re.search(r'<div class="rating-count">\((?P<ratingcount>[^<]+)\)</div>', html)
|
|
return int(self._fix_count(m.group('ratingcount'))) if m is not None else 0
|
|
|
|
def _extract_view_count(self, html):
|
|
m = re.search(r'<li class="views">\s*<span class="count">(?P<viewcount>[^<]+)</span> Views\s*</li>', html)
|
|
return int(self._fix_count(m.group('viewcount'))) if m is not None else 0
|
|
|
|
def _extract_comment_count(self, html):
|
|
m = re.search(r'<li class="comments">\s*<a href="#comments">\s*<span class="count">(?P<commentcount>[^<]+)</span> Comments\s*</a>\s*</li>', html)
|
|
return int(self._fix_count(m.group('commentcount'))) if m is not None else 0
|
|
|
|
def _fix_count(self, count):
|
|
return int(str(count).replace(',', '')) if count is not None else None
|
|
|
|
def _extract_authors(self, html):
|
|
m = re.search(r'(?s)<li class="author">(.*?)</li>', html)
|
|
if m is None:
|
|
return None
|
|
return re.findall(r'<a href="/Niners/[^"]+">([^<]+)</a>', m.group(1))
|
|
|
|
def _extract_session_code(self, html):
|
|
m = re.search(r'<li class="code">\s*(?P<code>.+?)\s*</li>', html)
|
|
return m.group('code') if m is not None else None
|
|
|
|
def _extract_session_day(self, html):
|
|
m = re.search(r'<li class="day">\s*<a href="/Events/[^"]+">(?P<day>[^<]+)</a>\s*</li>', html)
|
|
return m.group('day') if m is not None else None
|
|
|
|
def _extract_session_room(self, html):
|
|
m = re.search(r'<li class="room">\s*(?P<room>.+?)\s*</li>', html)
|
|
return m.group('room') if m is not None else None
|
|
|
|
def _extract_session_speakers(self, html):
|
|
return re.findall(r'<a href="/Events/Speakers/[^"]+">([^<]+)</a>', html)
|
|
|
|
def _extract_content(self, html, content_path):
|
|
# Look for downloadable content
|
|
formats = self._formats_from_html(html)
|
|
slides = self._extract_slides(html)
|
|
zip_ = self._extract_zip(html)
|
|
|
|
# Nothing to download
|
|
if len(formats) == 0 and slides is None and zip_ is None:
|
|
self._downloader.report_warning('None of recording, slides or zip are available for %s' % content_path)
|
|
return
|
|
|
|
# Extract meta
|
|
title = self._extract_title(html)
|
|
description = self._extract_description(html)
|
|
thumbnail = self._og_search_thumbnail(html)
|
|
duration = self._extract_duration(html)
|
|
avg_rating = self._extract_avg_rating(html)
|
|
rating_count = self._extract_rating_count(html)
|
|
view_count = self._extract_view_count(html)
|
|
comment_count = self._extract_comment_count(html)
|
|
|
|
common = {
|
|
'_type': 'video',
|
|
'id': content_path,
|
|
'description': description,
|
|
'thumbnail': thumbnail,
|
|
'duration': duration,
|
|
'avg_rating': avg_rating,
|
|
'rating_count': rating_count,
|
|
'view_count': view_count,
|
|
'comment_count': comment_count,
|
|
}
|
|
|
|
result = []
|
|
|
|
if slides is not None:
|
|
d = common.copy()
|
|
d.update({'title': title + '-Slides', 'url': slides})
|
|
result.append(d)
|
|
|
|
if zip_ is not None:
|
|
d = common.copy()
|
|
d.update({'title': title + '-Zip', 'url': zip_})
|
|
result.append(d)
|
|
|
|
if len(formats) > 0:
|
|
d = common.copy()
|
|
d.update({'title': title, 'formats': formats})
|
|
result.append(d)
|
|
|
|
return result
|
|
|
|
def _extract_entry_item(self, html, content_path):
|
|
contents = self._extract_content(html, content_path)
|
|
if contents is None:
|
|
return contents
|
|
|
|
authors = self._extract_authors(html)
|
|
|
|
for content in contents:
|
|
content['authors'] = authors
|
|
|
|
return contents
|
|
|
|
def _extract_session(self, html, content_path):
|
|
contents = self._extract_content(html, content_path)
|
|
if contents is None:
|
|
return contents
|
|
|
|
session_meta = {
|
|
'session_code': self._extract_session_code(html),
|
|
'session_day': self._extract_session_day(html),
|
|
'session_room': self._extract_session_room(html),
|
|
'session_speakers': self._extract_session_speakers(html),
|
|
}
|
|
|
|
for content in contents:
|
|
content.update(session_meta)
|
|
|
|
return self.playlist_result(contents)
|
|
|
|
def _extract_list(self, content_path):
|
|
rss = self._download_xml(self._RSS_URL % content_path, content_path, 'Downloading RSS')
|
|
entries = [self.url_result(session_url.text, 'Channel9')
|
|
for session_url in rss.findall('./channel/item/link')]
|
|
title_text = rss.find('./channel/title').text
|
|
return self.playlist_result(entries, content_path, title_text)
|
|
|
|
def _real_extract(self, url):
|
|
mobj = re.match(self._VALID_URL, url)
|
|
content_path = mobj.group('contentpath')
|
|
|
|
webpage = self._download_webpage(url, content_path, 'Downloading web page')
|
|
|
|
page_type_m = re.search(r'<meta name="WT.entryid" content="(?P<pagetype>[^:]+)[^"]+"/>', webpage)
|
|
if page_type_m is not None:
|
|
page_type = page_type_m.group('pagetype')
|
|
if page_type == 'Entry': # Any 'item'-like page, may contain downloadable content
|
|
return self._extract_entry_item(webpage, content_path)
|
|
elif page_type == 'Session': # Event session page, may contain downloadable content
|
|
return self._extract_session(webpage, content_path)
|
|
elif page_type == 'Event':
|
|
return self._extract_list(content_path)
|
|
else:
|
|
raise ExtractorError('Unexpected WT.entryid %s' % page_type, expected=True)
|
|
|
|
else: # Assuming list
|
|
return self._extract_list(content_path)
|