--- /dev/null
+# encoding: utf-8
+
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+ format_bytes,
+ 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 = u'Channel 9'
+ IE_NAME = u'channel9'
+ _VALID_URL = r'^https?://(?:www\.)?channel9\.msdn\.com/(?P<contentpath>.+)/?'
+
+ _TESTS = [
+ {
+ u'url': u'http://channel9.msdn.com/Events/TechEd/Australia/2013/KOS002',
+ u'file': u'Events_TechEd_Australia_2013_KOS002.mp4',
+ u'md5': u'bbd75296ba47916b754e73c3a4bbdf10',
+ u'info_dict': {
+ u'title': u'Developer Kick-Off Session: Stuff We Love',
+ u'description': u'md5:c08d72240b7c87fcecafe2692f80e35f',
+ u'duration': 4576,
+ u'thumbnail': u'http://media.ch9.ms/ch9/9d51/03902f2d-fc97-4d3c-b195-0bfe15a19d51/KOS002_220.jpg',
+ u'session_code': u'KOS002',
+ u'session_day': u'Day 1',
+ u'session_room': u'Arena 1A',
+ u'session_speakers': [ u'Ed Blankenship', u'Andrew Coates', u'Brady Gaster', u'Patrick Klug', u'Mads Kristensen' ],
+ },
+ },
+ {
+ u'url': u'http://channel9.msdn.com/posts/Self-service-BI-with-Power-BI-nuclear-testing',
+ u'file': u'posts_Self-service-BI-with-Power-BI-nuclear-testing.mp4',
+ u'md5': u'b43ee4529d111bc37ba7ee4f34813e68',
+ u'info_dict': {
+ u'title': u'Self-service BI with Power BI - nuclear testing',
+ u'description': u'md5:a6d5cfd9ee46d1851cf6e40ea61cfc10',
+ u'duration': 1540,
+ u'thumbnail': u'http://media.ch9.ms/ch9/87e1/0300391f-a455-4c72-bec3-4422f19287e1/selfservicenuk_512.jpg',
+ u'authors': [ u'Mike Wilmot' ],
+ },
+ }
+ ]
+
+ _RSS_URL = 'http://channel9.msdn.com/%s/RSS'
+ _EXTRACT_ENTRY_ITEMS_FROM_RSS = False
+
+ # 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 = [u'B', u'KB', u'MB', u'GB', u'TB', u'PB', u'EB', u'ZB', u'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
+ } for x in list(re.finditer(FORMAT_REGEX, html)) if x.group('quality') in self._known_formats]
+ # Sort according to known formats list
+ formats.sort(key=lambda fmt: self._known_formats.index(fmt['format_id']))
+ return formats
+
+ def _formats_from_rss_item(self, item):
+
+ def process_formats(elem):
+ formats = []
+ for media_content in elem.findall('./{http://search.yahoo.com/mrss/}content'):
+ url = media_content.attrib['url']
+ # Ignore unrelated media
+ if url.endswith('.ism/manifest'):
+ continue
+ format_note = media_content.attrib['type']
+ filesize = int(media_content.attrib['fileSize'])
+ formats.append({'url': url,
+ 'format_note': format_note,
+ 'format': '%s %s' % (format_note, format_bytes(filesize)),
+ 'filesize': filesize,
+ })
+ return formats
+
+ formats = []
+
+ for media_group in item.findall('./{http://search.yahoo.com/mrss/}group'):
+ formats.extend(process_formats(media_group))
+
+ # Sometimes there are no media:groups in item, but there is media:content
+ # right in item (usually when there is the only media source)
+ formats.extend(process_formats(item))
+
+ # Sort by file size
+ formats.sort(key=lambda fmt: fmt['filesize'])
+ return formats
+
+ def _extract_title(self, html):
+ title = self._html_search_meta(u'title', html, u'title')
+ if title is None:
+ title = self._og_search_title(html)
+ TITLE_SUFFIX = u' (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(u'description', html, u'description')
+
+ def _extract_duration(self, html):
+ m = re.search(r'data-video_duration="(?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(u'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 contents
+
+ def _extract_content_rss(self, rss):
+ '''
+ Extracts links to entry items right out of RSS feed.
+ This approach is faster than extracting from web pages
+ one by one, but suffers from some problems.
+ Pros:
+ - no need to download additional pages
+ - provides more media links
+ - accurate file size
+ Cons:
+ - fewer meta data provided
+ - links to media files have no appropriate data that may be used as format_id
+ - RSS does not contain links to presentation materials (slides, zip)
+ '''
+ entries = []
+ for item in rss.findall('./channel/item'):
+ url = item.find('./link').text
+ video_id = url.split('/')[-1]
+ formats = self._formats_from_rss_item(item)
+
+ if len(formats) == 0:
+ self._downloader.report_warning(u'The recording for session %s is not yet available' % video_id)
+ continue
+
+ title = item.find('./title').text
+ description = item.find('./description').text
+
+ thumbnail = item.find('./{http://search.yahoo.com/mrss/}thumbnail').text
+
+ duration_e = item.find('./{http://www.itunes.com/dtds/podcast-1.0.dtd}duration')
+ duration = duration_e.text if duration_e is not None else 0
+
+ speakers_e = item.find('./{http://purl.org/dc/elements/1.1/}creator')
+ speakers = speakers_e.text.split(', ') if speakers_e is not None and speakers_e.text else []
+
+ entries.append({'_type': 'video',
+ 'id': video_id,
+ 'formats': formats,
+ 'title': title,
+ 'description': description,
+ 'thumbnail': thumbnail,
+ 'duration': duration,
+ 'session_speakers': speakers,
+ })
+ return entries
+
+ def _extract_list(self, content_path):
+ rss = self._download_xml(self._RSS_URL % content_path, content_path, u'Downloading RSS')
+ if self._EXTRACT_ENTRY_ITEMS_FROM_RSS:
+ return self._extract_content_rss(rss)
+ else:
+ 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, u'Downloading web page')
+
+ page_type_m = re.search(r'<meta name="Search.PageType" content="(?P<pagetype>[^"]+)"/>', webpage)
+ if page_type_m is None:
+ raise ExtractorError(u'Search.PageType not found, don\'t know how to process this page', expected=True)
+
+ page_type = page_type_m.group('pagetype')
+ if page_type == 'List': # List page, may contain list of 'item'-like objects
+ return self._extract_list(content_path)
+ elif page_type == 'Entry.Item': # 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)
+ else:
+ raise ExtractorError(u'Unexpected Search.PageType %s' % page_type, expected=True)
\ No newline at end of file
projects / youtube-dl / commitdiff