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df537474 | 1 | # encoding: utf-8 |
2 | ||
3 | import re | |
4 | ||
5 | from .common import InfoExtractor | |
4d2ebb6b | 6 | from ..utils import ExtractorError |
df537474 | 7 | |
8 | class Channel9IE(InfoExtractor): | |
9 | ''' | |
10 | Common extractor for channel9.msdn.com. | |
11 | ||
12 | The type of provided URL (video or playlist) is determined according to | |
13 | meta Search.PageType from web page HTML rather than URL itself, as it is | |
14 | not always possible to do. | |
15 | ''' | |
16 | IE_DESC = u'Channel 9' | |
17 | IE_NAME = u'channel9' | |
18 | _VALID_URL = r'^https?://(?:www\.)?channel9\.msdn\.com/(?P<contentpath>.+)/?' | |
19 | ||
20 | _TESTS = [ | |
21 | { | |
22 | u'url': u'http://channel9.msdn.com/Events/TechEd/Australia/2013/KOS002', | |
23 | u'file': u'Events_TechEd_Australia_2013_KOS002.mp4', | |
24 | u'md5': u'bbd75296ba47916b754e73c3a4bbdf10', | |
25 | u'info_dict': { | |
26 | u'title': u'Developer Kick-Off Session: Stuff We Love', | |
27 | u'description': u'md5:c08d72240b7c87fcecafe2692f80e35f', | |
28 | u'duration': 4576, | |
29 | u'thumbnail': u'http://media.ch9.ms/ch9/9d51/03902f2d-fc97-4d3c-b195-0bfe15a19d51/KOS002_220.jpg', | |
30 | u'session_code': u'KOS002', | |
31 | u'session_day': u'Day 1', | |
32 | u'session_room': u'Arena 1A', | |
33 | u'session_speakers': [ u'Ed Blankenship', u'Andrew Coates', u'Brady Gaster', u'Patrick Klug', u'Mads Kristensen' ], | |
34 | }, | |
35 | }, | |
36 | { | |
37 | u'url': u'http://channel9.msdn.com/posts/Self-service-BI-with-Power-BI-nuclear-testing', | |
38 | u'file': u'posts_Self-service-BI-with-Power-BI-nuclear-testing.mp4', | |
39 | u'md5': u'b43ee4529d111bc37ba7ee4f34813e68', | |
40 | u'info_dict': { | |
41 | u'title': u'Self-service BI with Power BI - nuclear testing', | |
9b17ba0f | 42 | u'description': u'md5:d1e6ecaafa7fb52a2cacdf9599829f5b', |
df537474 | 43 | u'duration': 1540, |
44 | u'thumbnail': u'http://media.ch9.ms/ch9/87e1/0300391f-a455-4c72-bec3-4422f19287e1/selfservicenuk_512.jpg', | |
45 | u'authors': [ u'Mike Wilmot' ], | |
46 | }, | |
47 | } | |
48 | ] | |
49 | ||
50 | _RSS_URL = 'http://channel9.msdn.com/%s/RSS' | |
df537474 | 51 | |
52 | # Sorted by quality | |
53 | _known_formats = ['MP3', 'MP4', 'Mid Quality WMV', 'Mid Quality MP4', 'High Quality WMV', 'High Quality MP4'] | |
54 | ||
55 | def _restore_bytes(self, formatted_size): | |
56 | if not formatted_size: | |
57 | return 0 | |
58 | m = re.match(r'^(?P<size>\d+(?:\.\d+)?)\s+(?P<units>[a-zA-Z]+)', formatted_size) | |
59 | if not m: | |
60 | return 0 | |
61 | units = m.group('units') | |
62 | try: | |
63 | exponent = [u'B', u'KB', u'MB', u'GB', u'TB', u'PB', u'EB', u'ZB', u'YB'].index(units.upper()) | |
64 | except ValueError: | |
65 | return 0 | |
66 | size = float(m.group('size')) | |
67 | return int(size * (1024 ** exponent)) | |
68 | ||
69 | def _formats_from_html(self, html): | |
70 | FORMAT_REGEX = r''' | |
71 | (?x) | |
72 | <a\s+href="(?P<url>[^"]+)">(?P<quality>[^<]+)</a>\s* | |
73 | <span\s+class="usage">\((?P<note>[^\)]+)\)</span>\s* | |
74 | (?:<div\s+class="popup\s+rounded">\s* | |
75 | <h3>File\s+size</h3>\s*(?P<filesize>.*?)\s* | |
76 | </div>)? # File size part may be missing | |
77 | ''' | |
78 | # Extract known formats | |
a1b92edb PH |
79 | formats = [{ |
80 | 'url': x.group('url'), | |
81 | 'format_id': x.group('quality'), | |
82 | 'format_note': x.group('note'), | |
83 | 'format': u'%s (%s)' % (x.group('quality'), x.group('note')), | |
84 | 'filesize': self._restore_bytes(x.group('filesize')), # File size is approximate | |
85 | 'preference': self._known_formats.index(x.group('quality')), | |
86 | 'vcodec': 'none' if x.group('note') == 'Audio only' else None, | |
87 | } for x in list(re.finditer(FORMAT_REGEX, html)) if x.group('quality') in self._known_formats] | |
88 | ||
89 | self._sort_formats(formats) | |
90 | ||
df537474 | 91 | return formats |
92 | ||
df537474 | 93 | def _extract_title(self, html): |
94 | title = self._html_search_meta(u'title', html, u'title') | |
95 | if title is None: | |
96 | title = self._og_search_title(html) | |
97 | TITLE_SUFFIX = u' (Channel 9)' | |
98 | if title is not None and title.endswith(TITLE_SUFFIX): | |
99 | title = title[:-len(TITLE_SUFFIX)] | |
100 | return title | |
101 | ||
102 | def _extract_description(self, html): | |
103 | DESCRIPTION_REGEX = r'''(?sx) | |
104 | <div\s+class="entry-content">\s* | |
105 | <div\s+id="entry-body">\s* | |
106 | (?P<description>.+?)\s* | |
107 | </div>\s* | |
108 | </div> | |
109 | ''' | |
110 | m = re.search(DESCRIPTION_REGEX, html) | |
111 | if m is not None: | |
112 | return m.group('description') | |
113 | return self._html_search_meta(u'description', html, u'description') | |
114 | ||
115 | def _extract_duration(self, html): | |
116 | m = re.search(r'data-video_duration="(?P<hours>\d{2}):(?P<minutes>\d{2}):(?P<seconds>\d{2})"', html) | |
117 | return ((int(m.group('hours')) * 60 * 60) + (int(m.group('minutes')) * 60) + int(m.group('seconds'))) if m else None | |
118 | ||
119 | def _extract_slides(self, html): | |
120 | m = re.search(r'<a href="(?P<slidesurl>[^"]+)" class="slides">Slides</a>', html) | |
121 | return m.group('slidesurl') if m is not None else None | |
122 | ||
123 | def _extract_zip(self, html): | |
124 | m = re.search(r'<a href="(?P<zipurl>[^"]+)" class="zip">Zip</a>', html) | |
125 | return m.group('zipurl') if m is not None else None | |
126 | ||
127 | def _extract_avg_rating(self, html): | |
128 | m = re.search(r'<p class="avg-rating">Avg Rating: <span>(?P<avgrating>[^<]+)</span></p>', html) | |
129 | return float(m.group('avgrating')) if m is not None else 0 | |
130 | ||
131 | def _extract_rating_count(self, html): | |
132 | m = re.search(r'<div class="rating-count">\((?P<ratingcount>[^<]+)\)</div>', html) | |
133 | return int(self._fix_count(m.group('ratingcount'))) if m is not None else 0 | |
134 | ||
135 | def _extract_view_count(self, html): | |
136 | m = re.search(r'<li class="views">\s*<span class="count">(?P<viewcount>[^<]+)</span> Views\s*</li>', html) | |
137 | return int(self._fix_count(m.group('viewcount'))) if m is not None else 0 | |
138 | ||
139 | def _extract_comment_count(self, html): | |
140 | m = re.search(r'<li class="comments">\s*<a href="#comments">\s*<span class="count">(?P<commentcount>[^<]+)</span> Comments\s*</a>\s*</li>', html) | |
141 | return int(self._fix_count(m.group('commentcount'))) if m is not None else 0 | |
142 | ||
143 | def _fix_count(self, count): | |
144 | return int(str(count).replace(',', '')) if count is not None else None | |
145 | ||
146 | def _extract_authors(self, html): | |
147 | m = re.search(r'(?s)<li class="author">(.*?)</li>', html) | |
148 | if m is None: | |
149 | return None | |
150 | return re.findall(r'<a href="/Niners/[^"]+">([^<]+)</a>', m.group(1)) | |
151 | ||
152 | def _extract_session_code(self, html): | |
153 | m = re.search(r'<li class="code">\s*(?P<code>.+?)\s*</li>', html) | |
154 | return m.group('code') if m is not None else None | |
155 | ||
156 | def _extract_session_day(self, html): | |
157 | m = re.search(r'<li class="day">\s*<a href="/Events/[^"]+">(?P<day>[^<]+)</a>\s*</li>', html) | |
158 | return m.group('day') if m is not None else None | |
159 | ||
160 | def _extract_session_room(self, html): | |
161 | m = re.search(r'<li class="room">\s*(?P<room>.+?)\s*</li>', html) | |
162 | return m.group('room') if m is not None else None | |
163 | ||
164 | def _extract_session_speakers(self, html): | |
165 | return re.findall(r'<a href="/Events/Speakers/[^"]+">([^<]+)</a>', html) | |
166 | ||
167 | def _extract_content(self, html, content_path): | |
168 | # Look for downloadable content | |
169 | formats = self._formats_from_html(html) | |
170 | slides = self._extract_slides(html) | |
171 | zip_ = self._extract_zip(html) | |
172 | ||
173 | # Nothing to download | |
174 | if len(formats) == 0 and slides is None and zip_ is None: | |
175 | self._downloader.report_warning(u'None of recording, slides or zip are available for %s' % content_path) | |
176 | return | |
177 | ||
178 | # Extract meta | |
179 | title = self._extract_title(html) | |
180 | description = self._extract_description(html) | |
181 | thumbnail = self._og_search_thumbnail(html) | |
182 | duration = self._extract_duration(html) | |
183 | avg_rating = self._extract_avg_rating(html) | |
184 | rating_count = self._extract_rating_count(html) | |
185 | view_count = self._extract_view_count(html) | |
186 | comment_count = self._extract_comment_count(html) | |
187 | ||
188 | common = {'_type': 'video', | |
189 | 'id': content_path, | |
190 | 'description': description, | |
191 | 'thumbnail': thumbnail, | |
192 | 'duration': duration, | |
193 | 'avg_rating': avg_rating, | |
194 | 'rating_count': rating_count, | |
195 | 'view_count': view_count, | |
196 | 'comment_count': comment_count, | |
197 | } | |
198 | ||
199 | result = [] | |
200 | ||
201 | if slides is not None: | |
202 | d = common.copy() | |
203 | d.update({ 'title': title + '-Slides', 'url': slides }) | |
204 | result.append(d) | |
205 | ||
206 | if zip_ is not None: | |
207 | d = common.copy() | |
208 | d.update({ 'title': title + '-Zip', 'url': zip_ }) | |
209 | result.append(d) | |
210 | ||
211 | if len(formats) > 0: | |
212 | d = common.copy() | |
213 | d.update({ 'title': title, 'formats': formats }) | |
214 | result.append(d) | |
215 | ||
216 | return result | |
217 | ||
218 | def _extract_entry_item(self, html, content_path): | |
219 | contents = self._extract_content(html, content_path) | |
220 | if contents is None: | |
221 | return contents | |
222 | ||
223 | authors = self._extract_authors(html) | |
224 | ||
225 | for content in contents: | |
226 | content['authors'] = authors | |
227 | ||
228 | return contents | |
229 | ||
230 | def _extract_session(self, html, content_path): | |
231 | contents = self._extract_content(html, content_path) | |
232 | if contents is None: | |
233 | return contents | |
234 | ||
235 | session_meta = {'session_code': self._extract_session_code(html), | |
236 | 'session_day': self._extract_session_day(html), | |
237 | 'session_room': self._extract_session_room(html), | |
238 | 'session_speakers': self._extract_session_speakers(html), | |
239 | } | |
240 | ||
241 | for content in contents: | |
242 | content.update(session_meta) | |
243 | ||
244 | return contents | |
245 | ||
df537474 | 246 | def _extract_list(self, content_path): |
247 | rss = self._download_xml(self._RSS_URL % content_path, content_path, u'Downloading RSS') | |
4d2ebb6b | 248 | entries = [self.url_result(session_url.text, 'Channel9') |
249 | for session_url in rss.findall('./channel/item/link')] | |
250 | title_text = rss.find('./channel/title').text | |
251 | return self.playlist_result(entries, content_path, title_text) | |
df537474 | 252 | |
253 | def _real_extract(self, url): | |
254 | mobj = re.match(self._VALID_URL, url) | |
255 | content_path = mobj.group('contentpath') | |
256 | ||
257 | webpage = self._download_webpage(url, content_path, u'Downloading web page') | |
258 | ||
259 | page_type_m = re.search(r'<meta name="Search.PageType" content="(?P<pagetype>[^"]+)"/>', webpage) | |
260 | if page_type_m is None: | |
261 | raise ExtractorError(u'Search.PageType not found, don\'t know how to process this page', expected=True) | |
262 | ||
263 | page_type = page_type_m.group('pagetype') | |
264 | if page_type == 'List': # List page, may contain list of 'item'-like objects | |
265 | return self._extract_list(content_path) | |
266 | elif page_type == 'Entry.Item': # Any 'item'-like page, may contain downloadable content | |
267 | return self._extract_entry_item(webpage, content_path) | |
268 | elif page_type == 'Session': # Event session page, may contain downloadable content | |
269 | return self._extract_session(webpage, content_path) | |
270 | else: | |
271 | raise ExtractorError(u'Unexpected Search.PageType %s' % page_type, expected=True) |