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[youtube-dl.git] / youtube_dl / extractor / jove.py
1 from __future__ import unicode_literals
2
3 import re
4
5 from .common import InfoExtractor
6 from ..utils import (
7     ExtractorError,
8     unified_strdate
9 )
10
11
12 class JoveIE(InfoExtractor):
13     _VALID_URL = r'https?://(?:www\.)?jove\.com/video/(?P<id>[0-9]+)'
14     _CHAPTERS_URL = 'http://www.jove.com/video-chapters?videoid={video_id:}'
15     _TESTS = [
16         {
17             'url': 'http://www.jove.com/video/2744/electrode-positioning-montage-transcranial-direct-current',
18             'md5': '93723888d82dbd6ba8b3d7d0cd65dd2b',
19             'info_dict': {
20                 'id': '2744',
21                 'ext': 'mp4',
22                 'title': 'Electrode Positioning and Montage in Transcranial Direct Current Stimulation',
23                 'description': 'md5:015dd4509649c0908bc27f049e0262c6',
24                 'thumbnail': 're:^https?://.*\.png$',
25                 'upload_date': '20110523',
26             }
27         },
28         {
29             'url': 'http://www.jove.com/video/51796/culturing-caenorhabditis-elegans-axenic-liquid-media-creation',
30             'md5': '914aeb356f416811d911996434811beb',
31             'info_dict': {
32                 'id': '51796',
33                 'ext': 'mp4',
34                 'title': 'Culturing Caenorhabditis elegans in Axenic Liquid Media and Creation of Transgenic Worms by Microparticle Bombardment',
35                 'description': 'md5:35ff029261900583970c4023b70f1dc9',
36                 'thumbnail': 're:^https?://.*\.png$',
37                 'upload_date': '20140802',
38             }
39         },
40
41     ]
42
43     def _real_extract(self, url):
44         mobj = re.match(self._VALID_URL, url)
45         video_id = mobj.group('id')
46
47         webpage = self._download_webpage(url, video_id)
48
49         chapters_id = self._html_search_regex(
50             r'/video-chapters\?videoid=([0-9]+)', webpage, 'chapters id')
51
52         chapters_xml = self._download_xml(
53             self._CHAPTERS_URL.format(video_id=chapters_id),
54             video_id, note='Downloading chapters XML',
55             errnote='Failed to download chapters XML')
56
57         video_url = chapters_xml.attrib.get('video')
58         if not video_url:
59             raise ExtractorError('Failed to get the video URL')
60
61         title = self._html_search_meta('citation_title', webpage, 'title')
62         thumbnail = self._og_search_thumbnail(webpage)
63         description = self._html_search_regex(
64             r'<div id="section_body_summary"><p class="jove_content">(.+?)</p>',
65             webpage, 'description', fatal=False)
66         publish_date = unified_strdate(self._html_search_meta(
67             'citation_publication_date', webpage, 'publish date', fatal=False))
68         comment_count = self._html_search_regex(
69             r'<meta name="num_comments" content="(\d+) Comments?"',
70             webpage, 'comment count', fatal=False)
71
72         return {
73             'id': video_id,
74             'title': title,
75             'url': video_url,
76             'thumbnail': thumbnail,
77             'description': description,
78             'upload_date': publish_date,
79             'comment_count': comment_count,
80         }