Add an extractor for Slideshare (closes #1400)

youtube_dl/extractor/slideshare.py

@@ -0,0 +1,47 @@
+import re
+import json
+
+from .common import InfoExtractor
+from ..utils import (
+    compat_urlparse,
+    ExtractorError,
+)
+
+
+class SlideshareIE(InfoExtractor):
+    _VALID_URL = r'https?://www\.slideshare\.net/[^/]+?/(?P<title>.+?)($|\?)'
+
+    _TEST = {
+        u'url': u'http://www.slideshare.net/Dataversity/keynote-presentation-managing-scale-and-complexity',
+        u'file': u'25665706.mp4',
+        u'info_dict': {
+            u'title': u'Managing Scale and Complexity',
+            u'description': u'This was a keynote presentation at the NoSQL Now! 2013 Conference & Expo (http://www.nosqlnow.com). This presentation was given by Adrian Cockcroft from Netflix',
+        },
+    }
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        page_title = mobj.group('title')
+        webpage = self._download_webpage(url, page_title)
+        slideshare_obj = self._search_regex(
+            r'var slideshare_object =  ({.*?}); var user_info =',
+            webpage, u'slideshare object')
+        info = json.loads(slideshare_obj)
+        if info['slideshow']['type'] != u'video':
+            raise ExtractorError(u'Webpage type is "%s": only video extraction is supported for Slideshare' % info['slideshow']['type'], expected=True)
+
+        doc = info['doc']
+        bucket = info['jsplayer']['video_bucket']
+        ext = info['jsplayer']['video_extension']
+        video_url = compat_urlparse.urljoin(bucket, doc + '-SD.' + ext)
+
+        return {
+            '_type': 'video',
+            'id': info['slideshow']['id'],
+            'title': info['slideshow']['title'],
+            'ext': ext,
+            'url': video_url,
+            'thumbnail': info['slideshow']['pin_image_url'],
+            'description': self._og_search_description(webpage),
+        }