[lynda] Add support for lynda.com (#1966)

youtube_dl/extractor/__init__.py

@@ -97,6 +97,10 @@
 from .keek import KeekIE
 from .liveleak import LiveLeakIE
 from .livestream import LivestreamIE, LivestreamOriginalIE
+from .lynda import (
+    LyndaIE,
+    LyndaCourseIE
+)
 from .mdr import MDRIE
 from .metacafe import MetacafeIE
 from .metacritic import MetacriticIE

youtube_dl/extractor/lynda.py

@@ -0,0 +1,96 @@
+import re
+import json
+
+from .common import InfoExtractor
+from ..utils import ExtractorError
+
+
+class LyndaIE(InfoExtractor):
+    IE_NAME = u'lynda'
+    IE_DESC = u'lynda.com videos'
+    _VALID_URL = r'https?://www\.lynda\.com/[^/]+/[^/]+/\d+/(\d+)-\d\.html'
+
+    _TEST = {
+        u'url': u'http://www.lynda.com/Bootstrap-tutorials/Using-exercise-files/110885/114408-4.html',
+        u'file': u'114408.mp4',
+        u'md5': u'ecfc6862da89489161fb9cd5f5a6fac1',
+        u"info_dict": {
+            u'title': u'Using the exercise files',
+            u'duration': 68
+        }
+    }
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        video_id = mobj.group(1)
+
+        page = self._download_webpage('http://www.lynda.com/ajax/player?videoId=%s&type=video' % video_id,
+                                      video_id, u'Downloading video JSON')
+        video_json = json.loads(page)
+
+        if u'Status' in video_json and video_json[u'Status'] == u'NotFound':
+            raise ExtractorError(u'Video %s does not exist' % video_id, expected=True)
+
+        if video_json[u'HasAccess'] is False:
+            raise ExtractorError(u'Video %s is only available for members' % video_id, expected=True)
+
+        video_id = video_json[u'ID']
+        duration = video_json[u'DurationInSeconds']
+        title = video_json[u'Title']
+
+        formats = [{'url': fmt[u'Url'],
+                    'ext': fmt[u'Extension'],
+                    'width': fmt[u'Width'],
+                    'height': fmt[u'Height'],
+                    'filesize': fmt[u'FileSize'],
+                    'format_id': fmt[u'Resolution']
+                    } for fmt in video_json[u'Formats']]
+
+        self._sort_formats(formats)
+
+        return {
+            'id': video_id,
+            'title': title,
+            'duration': duration,
+            'formats': formats
+        }
+
+
+class LyndaCourseIE(InfoExtractor):
+    IE_NAME = u'lynda:course'
+    IE_DESC = u'lynda.com online courses'
+
+    # Course link equals to welcome/introduction video link of same course
+    # We will recognize it as course link
+    _VALID_URL = r'https?://(?:www|m)\.lynda\.com/(?P<coursepath>[^/]+/[^/]+/(?P<courseid>\d+))-\d\.html'
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        course_path = mobj.group('coursepath')
+        course_id = mobj.group('courseid')
+
+        page = self._download_webpage('http://www.lynda.com/ajax/player?courseId=%s&type=course' % course_id,
+                                      course_id, u'Downloading course JSON')
+        course_json = json.loads(page)
+
+        if u'Status' in course_json and course_json[u'Status'] == u'NotFound':
+            raise ExtractorError(u'Course %s does not exist' % course_id, expected=True)
+
+        unaccessible_videos = 0
+        videos = []
+
+        for chapter in course_json[u'Chapters']:
+            for video in chapter[u'Videos']:
+                if video[u'HasAccess'] is not True:
+                    unaccessible_videos += 1
+                    continue
+                videos.append(video[u'ID'])
+
+        if unaccessible_videos > 0:
+            self._downloader.report_warning(u'%s videos are only available for members and will not be downloaded' % unaccessible_videos)
+
+        entries = [self.url_result('http://www.lynda.com/%s/%s-4.html' % (course_path, video_id), 'Lynda') for video_id in videos]
+
+        course_title = course_json[u'Title']
+
+        return self.playlist_result(entries, course_id, course_title)