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283 lines
11 KiB
283 lines
11 KiB
from __future__ import unicode_literals |
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import re |
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from .common import InfoExtractor |
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from ..utils import ( |
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ExtractorError, |
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parse_filesize, |
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qualities, |
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) |
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class Channel9IE(InfoExtractor): |
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''' |
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Common extractor for channel9.msdn.com. |
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The type of provided URL (video or playlist) is determined according to |
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meta Search.PageType from web page HTML rather than URL itself, as it is |
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not always possible to do. |
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''' |
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IE_DESC = 'Channel 9' |
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IE_NAME = 'channel9' |
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_VALID_URL = r'https?://(?:www\.)?channel9\.msdn\.com/(?P<contentpath>.+)/?' |
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_TESTS = [ |
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{ |
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'url': 'http://channel9.msdn.com/Events/TechEd/Australia/2013/KOS002', |
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'md5': 'bbd75296ba47916b754e73c3a4bbdf10', |
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'info_dict': { |
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'id': 'Events/TechEd/Australia/2013/KOS002', |
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'ext': 'mp4', |
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'title': 'Developer Kick-Off Session: Stuff We Love', |
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'description': 'md5:c08d72240b7c87fcecafe2692f80e35f', |
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'duration': 4576, |
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'thumbnail': 're:http://.*\.jpg', |
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'session_code': 'KOS002', |
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'session_day': 'Day 1', |
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'session_room': 'Arena 1A', |
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'session_speakers': ['Ed Blankenship', 'Andrew Coates', 'Brady Gaster', 'Patrick Klug', 'Mads Kristensen'], |
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}, |
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}, |
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{ |
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'url': 'http://channel9.msdn.com/posts/Self-service-BI-with-Power-BI-nuclear-testing', |
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'md5': 'b43ee4529d111bc37ba7ee4f34813e68', |
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'info_dict': { |
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'id': 'posts/Self-service-BI-with-Power-BI-nuclear-testing', |
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'ext': 'mp4', |
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'title': 'Self-service BI with Power BI - nuclear testing', |
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'description': 'md5:d1e6ecaafa7fb52a2cacdf9599829f5b', |
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'duration': 1540, |
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'thumbnail': 're:http://.*\.jpg', |
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'authors': ['Mike Wilmot'], |
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}, |
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}, |
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{ |
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# low quality mp4 is best |
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'url': 'https://channel9.msdn.com/Events/CPP/CppCon-2015/Ranges-for-the-Standard-Library', |
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'info_dict': { |
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'id': 'Events/CPP/CppCon-2015/Ranges-for-the-Standard-Library', |
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'ext': 'mp4', |
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'title': 'Ranges for the Standard Library', |
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'description': 'md5:2e6b4917677af3728c5f6d63784c4c5d', |
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'duration': 5646, |
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'thumbnail': 're:http://.*\.jpg', |
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}, |
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'params': { |
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'skip_download': True, |
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}, |
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} |
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] |
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_RSS_URL = 'http://channel9.msdn.com/%s/RSS' |
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def _formats_from_html(self, html): |
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FORMAT_REGEX = r''' |
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(?x) |
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<a\s+href="(?P<url>[^"]+)">(?P<quality>[^<]+)</a>\s* |
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<span\s+class="usage">\((?P<note>[^\)]+)\)</span>\s* |
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(?:<div\s+class="popup\s+rounded">\s* |
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<h3>File\s+size</h3>\s*(?P<filesize>.*?)\s* |
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</div>)? # File size part may be missing |
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''' |
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quality = qualities(( |
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'MP3', 'MP4', |
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'Low Quality WMV', 'Low Quality MP4', |
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'Mid Quality WMV', 'Mid Quality MP4', |
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'High Quality WMV', 'High Quality MP4')) |
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formats = [{ |
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'url': x.group('url'), |
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'format_id': x.group('quality'), |
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'format_note': x.group('note'), |
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'format': '%s (%s)' % (x.group('quality'), x.group('note')), |
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'filesize_approx': parse_filesize(x.group('filesize')), |
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'quality': quality(x.group('quality')), |
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'vcodec': 'none' if x.group('note') == 'Audio only' else None, |
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} for x in list(re.finditer(FORMAT_REGEX, html))] |
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self._sort_formats(formats) |
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return formats |
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def _extract_title(self, html): |
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title = self._html_search_meta('title', html, 'title') |
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if title is None: |
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title = self._og_search_title(html) |
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TITLE_SUFFIX = ' (Channel 9)' |
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if title is not None and title.endswith(TITLE_SUFFIX): |
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title = title[:-len(TITLE_SUFFIX)] |
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return title |
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def _extract_description(self, html): |
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DESCRIPTION_REGEX = r'''(?sx) |
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<div\s+class="entry-content">\s* |
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<div\s+id="entry-body">\s* |
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(?P<description>.+?)\s* |
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</div>\s* |
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</div> |
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''' |
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m = re.search(DESCRIPTION_REGEX, html) |
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if m is not None: |
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return m.group('description') |
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return self._html_search_meta('description', html, 'description') |
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def _extract_duration(self, html): |
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m = re.search(r'"length": *"(?P<hours>\d{2}):(?P<minutes>\d{2}):(?P<seconds>\d{2})"', html) |
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return ((int(m.group('hours')) * 60 * 60) + (int(m.group('minutes')) * 60) + int(m.group('seconds'))) if m else None |
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def _extract_slides(self, html): |
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m = re.search(r'<a href="(?P<slidesurl>[^"]+)" class="slides">Slides</a>', html) |
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return m.group('slidesurl') if m is not None else None |
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def _extract_zip(self, html): |
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m = re.search(r'<a href="(?P<zipurl>[^"]+)" class="zip">Zip</a>', html) |
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return m.group('zipurl') if m is not None else None |
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def _extract_avg_rating(self, html): |
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m = re.search(r'<p class="avg-rating">Avg Rating: <span>(?P<avgrating>[^<]+)</span></p>', html) |
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return float(m.group('avgrating')) if m is not None else 0 |
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def _extract_rating_count(self, html): |
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m = re.search(r'<div class="rating-count">\((?P<ratingcount>[^<]+)\)</div>', html) |
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return int(self._fix_count(m.group('ratingcount'))) if m is not None else 0 |
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def _extract_view_count(self, html): |
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m = re.search(r'<li class="views">\s*<span class="count">(?P<viewcount>[^<]+)</span> Views\s*</li>', html) |
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return int(self._fix_count(m.group('viewcount'))) if m is not None else 0 |
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def _extract_comment_count(self, html): |
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m = re.search(r'<li class="comments">\s*<a href="#comments">\s*<span class="count">(?P<commentcount>[^<]+)</span> Comments\s*</a>\s*</li>', html) |
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return int(self._fix_count(m.group('commentcount'))) if m is not None else 0 |
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def _fix_count(self, count): |
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return int(str(count).replace(',', '')) if count is not None else None |
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def _extract_authors(self, html): |
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m = re.search(r'(?s)<li class="author">(.*?)</li>', html) |
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if m is None: |
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return None |
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return re.findall(r'<a href="/Niners/[^"]+">([^<]+)</a>', m.group(1)) |
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def _extract_session_code(self, html): |
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m = re.search(r'<li class="code">\s*(?P<code>.+?)\s*</li>', html) |
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return m.group('code') if m is not None else None |
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def _extract_session_day(self, html): |
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m = re.search(r'<li class="day">\s*<a href="/Events/[^"]+">(?P<day>[^<]+)</a>\s*</li>', html) |
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return m.group('day').strip() if m is not None else None |
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def _extract_session_room(self, html): |
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m = re.search(r'<li class="room">\s*(?P<room>.+?)\s*</li>', html) |
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return m.group('room') if m is not None else None |
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def _extract_session_speakers(self, html): |
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return re.findall(r'<a href="/Events/Speakers/[^"]+">([^<]+)</a>', html) |
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def _extract_content(self, html, content_path): |
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# Look for downloadable content |
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formats = self._formats_from_html(html) |
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slides = self._extract_slides(html) |
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zip_ = self._extract_zip(html) |
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# Nothing to download |
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if len(formats) == 0 and slides is None and zip_ is None: |
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self._downloader.report_warning('None of recording, slides or zip are available for %s' % content_path) |
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return |
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# Extract meta |
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title = self._extract_title(html) |
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description = self._extract_description(html) |
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thumbnail = self._og_search_thumbnail(html) |
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duration = self._extract_duration(html) |
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avg_rating = self._extract_avg_rating(html) |
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rating_count = self._extract_rating_count(html) |
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view_count = self._extract_view_count(html) |
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comment_count = self._extract_comment_count(html) |
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common = { |
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'_type': 'video', |
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'id': content_path, |
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'description': description, |
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'thumbnail': thumbnail, |
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'duration': duration, |
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'avg_rating': avg_rating, |
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'rating_count': rating_count, |
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'view_count': view_count, |
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'comment_count': comment_count, |
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} |
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result = [] |
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if slides is not None: |
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d = common.copy() |
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d.update({'title': title + '-Slides', 'url': slides}) |
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result.append(d) |
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if zip_ is not None: |
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d = common.copy() |
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d.update({'title': title + '-Zip', 'url': zip_}) |
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result.append(d) |
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if len(formats) > 0: |
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d = common.copy() |
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d.update({'title': title, 'formats': formats}) |
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result.append(d) |
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return result |
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def _extract_entry_item(self, html, content_path): |
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contents = self._extract_content(html, content_path) |
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if contents is None: |
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return contents |
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if len(contents) > 1: |
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raise ExtractorError('Got more than one entry') |
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result = contents[0] |
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result['authors'] = self._extract_authors(html) |
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return result |
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def _extract_session(self, html, content_path): |
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contents = self._extract_content(html, content_path) |
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if contents is None: |
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return contents |
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session_meta = { |
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'session_code': self._extract_session_code(html), |
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'session_day': self._extract_session_day(html), |
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'session_room': self._extract_session_room(html), |
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'session_speakers': self._extract_session_speakers(html), |
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} |
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for content in contents: |
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content.update(session_meta) |
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return self.playlist_result(contents) |
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def _extract_list(self, content_path): |
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rss = self._download_xml(self._RSS_URL % content_path, content_path, 'Downloading RSS') |
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entries = [self.url_result(session_url.text, 'Channel9') |
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for session_url in rss.findall('./channel/item/link')] |
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title_text = rss.find('./channel/title').text |
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return self.playlist_result(entries, content_path, title_text) |
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def _real_extract(self, url): |
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mobj = re.match(self._VALID_URL, url) |
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content_path = mobj.group('contentpath') |
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webpage = self._download_webpage(url, content_path, 'Downloading web page') |
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page_type_m = re.search(r'<meta name="WT.entryid" content="(?P<pagetype>[^:]+)[^"]+"/>', webpage) |
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if page_type_m is not None: |
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page_type = page_type_m.group('pagetype') |
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if page_type == 'Entry': # Any 'item'-like page, may contain downloadable content |
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return self._extract_entry_item(webpage, content_path) |
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elif page_type == 'Session': # Event session page, may contain downloadable content |
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return self._extract_session(webpage, content_path) |
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elif page_type == 'Event': |
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return self._extract_list(content_path) |
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else: |
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raise ExtractorError('Unexpected WT.entryid %s' % page_type, expected=True) |
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else: # Assuming list |
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return self._extract_list(content_path)
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