Merge remote-tracking branch 'dstftw/generic-webpage-unescape'
[youtube-dl] / youtube_dl / extractor / ted.py
index 4c11f7a03c37136c0c80677e55b66598c647edeb..ad1a46c3385713056b94d2f00e38558e8ea69b1c 100644 (file)
+from __future__ import unicode_literals
+
 import json
 import re
 
-from .common import InfoExtractor
+from .subtitles import SubtitlesInfoExtractor
+
+from ..utils import (
+    compat_str,
+)
 
 
-class TEDIE(InfoExtractor):
-    _VALID_URL=r'''http://www\.ted\.com/
-                   (
-                        ((?P<type_playlist>playlists)/(?P<playlist_id>\d+)) # We have a playlist
-                        |
-                        ((?P<type_talk>talks)) # We have a simple talk
-                   )
-                   (/lang/(.*?))? # The url may contain the language
-                   /(?P<name>\w+) # Here goes the name and then ".html"
-                   '''
+class TEDIE(SubtitlesInfoExtractor):
+    _VALID_URL = r'''(?x)
+        (?P<proto>https?://)
+        (?P<type>www|embed)(?P<urlmain>\.ted\.com/
+        (
+            (?P<type_playlist>playlists(?:/\d+)?) # We have a playlist
+            |
+            ((?P<type_talk>talks)) # We have a simple talk
+        )
+        (/lang/(.*?))? # The url may contain the language
+        /(?P<name>\w+) # Here goes the name and then ".html"
+        .*)$
+        '''
     _TEST = {
-        u'url': u'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
-        u'file': u'102.mp4',
-        u'md5': u'2d76ee1576672e0bd8f187513267adf6',
-        u'info_dict': {
-            u"description": u"md5:c6fa72e6eedbd938c9caf6b2702f5922", 
-            u"title": u"Dan Dennett: The illusion of consciousness"
+        'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
+        'md5': '4ea1dada91e4174b53dac2bb8ace429d',
+        'info_dict': {
+            'id': '102',
+            'ext': 'mp4',
+            'title': 'The illusion of consciousness',
+            'description': ('Philosopher Dan Dennett makes a compelling '
+                'argument that not only don\'t we understand our own '
+                'consciousness, but that half the time our brains are '
+                'actively fooling us.'),
+            'uploader': 'Dan Dennett',
         }
     }
 
-    @classmethod
-    def suitable(cls, url):
-        """Receives a URL and returns True if suitable for this IE."""
-        return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
+    _FORMATS_PREFERENCE = {
+        'low': 1,
+        'medium': 2,
+        'high': 3,
+    }
+
+    def _extract_info(self, webpage):
+        info_json = self._search_regex(r'q\("\w+.init",({.+})\)</script>',
+            webpage, 'info json')
+        return json.loads(info_json)
 
     def _real_extract(self, url):
-        m=re.match(self._VALID_URL, url, re.VERBOSE)
+        m = re.match(self._VALID_URL, url, re.VERBOSE)
+        if m.group('type') == 'embed':
+            desktop_url = m.group('proto') + 'www' + m.group('urlmain')
+            return self.url_result(desktop_url, 'TED')
+        name = m.group('name')
         if m.group('type_talk'):
-            return [self._talk_info(url)]
-        else :
-            playlist_id=m.group('playlist_id')
-            name=m.group('name')
-            self.to_screen(u'Getting info of playlist %s: "%s"' % (playlist_id,name))
-            return [self._playlist_videos_info(url,name,playlist_id)]
-
-    def _playlist_videos_info(self,url,name,playlist_id=0):
+            return self._talk_info(url, name)
+        else:
+            return self._playlist_videos_info(url, name)
+
+    def _playlist_videos_info(self, url, name):
         '''Returns the videos of the playlist'''
-        video_RE=r'''
-                     <li\ id="talk_(\d+)"([.\s]*?)data-id="(?P<video_id>\d+)"
-                     ([.\s]*?)data-playlist_item_id="(\d+)"
-                     ([.\s]*?)data-mediaslug="(?P<mediaSlug>.+?)"
-                     '''
-        video_name_RE=r'<p\ class="talk-title"><a href="(?P<talk_url>/talks/(.+).html)">(?P<fullname>.+?)</a></p>'
-        webpage=self._download_webpage(url, playlist_id, 'Downloading playlist webpage')
-        m_videos=re.finditer(video_RE,webpage,re.VERBOSE)
-        m_names=re.finditer(video_name_RE,webpage)
-
-        playlist_title = self._html_search_regex(r'div class="headline">\s*?<h1>\s*?<span>(.*?)</span>',
-                                                 webpage, 'playlist title')
-
-        playlist_entries = []
-        for m_video, m_name in zip(m_videos,m_names):
-            talk_url='http://www.ted.com%s' % m_name.group('talk_url')
-            playlist_entries.append(self.url_result(talk_url, 'TED'))
-        return self.playlist_result(playlist_entries, playlist_id = playlist_id, playlist_title = playlist_title)
-
-    def _talk_info(self, url, video_id=0):
-        """Return the video for the talk in the url"""
-        m = re.match(self._VALID_URL, url,re.VERBOSE)
-        video_name = m.group('name')
-        webpage = self._download_webpage(url, video_id, 'Downloading \"%s\" page' % video_name)
+
+        webpage = self._download_webpage(url, name,
+            'Downloading playlist webpage')
+        info = self._extract_info(webpage)
+        playlist_info = info['playlist']
+
+        playlist_entries = [
+            self.url_result(u'http://www.ted.com/talks/' + talk['slug'], self.ie_key())
+            for talk in info['talks']
+        ]
+        return self.playlist_result(
+            playlist_entries,
+            playlist_id=compat_str(playlist_info['id']),
+            playlist_title=playlist_info['title'])
+
+    def _talk_info(self, url, video_name):
+        webpage = self._download_webpage(url, video_name)
         self.report_extraction(video_name)
-        # If the url includes the language we get the title translated
-        title = self._html_search_regex(r'<span .*?id="altHeadline".+?>(?P<title>.*)</span>',
-                                        webpage, 'title')
-        json_data = self._search_regex(r'<script.*?>var talkDetails = ({.*?})</script>',
-                                    webpage, 'json data')
-        info = json.loads(json_data)
-        desc = self._html_search_regex(r'<div class="talk-intro">.*?<p.*?>(.*?)</p>',
-                                       webpage, 'description', flags = re.DOTALL)
-        
-        thumbnail = self._search_regex(r'</span>[\s.]*</div>[\s.]*<img src="(.*?)"',
-                                       webpage, 'thumbnail')
-        info = {
-                'id': info['id'],
-                'url': info['htmlStreams'][-1]['file'],
-                'ext': 'mp4',
-                'title': title,
-                'thumbnail': thumbnail,
-                'description': desc,
-                }
-        return info
+
+        talk_info = self._extract_info(webpage)['talks'][0]
+
+        formats = [{
+            'ext': 'mp4',
+            'url': format_url,
+            'format_id': format_id,
+            'format': format_id,
+            'preference': self._FORMATS_PREFERENCE.get(format_id, -1),
+        } for (format_id, format_url) in talk_info['nativeDownloads'].items()]
+        self._sort_formats(formats)
+
+        video_id = compat_str(talk_info['id'])
+        # subtitles
+        video_subtitles = self.extract_subtitles(video_id, talk_info)
+        if self._downloader.params.get('listsubtitles', False):
+            self._list_available_subtitles(video_id, talk_info)
+            return
+
+        thumbnail = talk_info['thumb']
+        if not thumbnail.startswith('http'):
+            thumbnail = 'http://' + thumbnail
+        return {
+            'id': video_id,
+            'title': talk_info['title'],
+            'uploader': talk_info['speaker'],
+            'thumbnail': thumbnail,
+            'description': self._og_search_description(webpage),
+            'subtitles': video_subtitles,
+            'formats': formats,
+        }
+
+    def _get_available_subtitles(self, video_id, talk_info):
+        languages = [lang['languageCode'] for lang in talk_info.get('languages', [])]
+        if languages:
+            sub_lang_list = {}
+            for l in languages:
+                url = 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/srt' % (video_id, l)
+                sub_lang_list[l] = url
+            return sub_lang_list
+        else:
+            self._downloader.report_warning(u'video doesn\'t have subtitles')
+            return {}