from __future__ import unicode_literals import re import json from .subtitles import SubtitlesInfoExtractor from .common import InfoExtractor from ..utils import ExtractorError class LyndaIE(SubtitlesInfoExtractor): IE_NAME = 'lynda' IE_DESC = 'lynda.com videos' _VALID_URL = r'https?://www\.lynda\.com/[^/]+/[^/]+/\d+/(\d+)-\d\.html' _TEST = { 'url': 'http://www.lynda.com/Bootstrap-tutorials/Using-exercise-files/110885/114408-4.html', 'file': '114408.mp4', 'md5': 'ecfc6862da89489161fb9cd5f5a6fac1', 'info_dict': { 'title': 'Using the exercise files', '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, 'Downloading video JSON') video_json = json.loads(page) if 'Status' in video_json and video_json['Status'] == 'NotFound': raise ExtractorError('Video %s does not exist' % video_id, expected=True) if video_json['HasAccess'] is False: raise ExtractorError('Video %s is only available for members' % video_id, expected=True) video_id = video_json['ID'] duration = video_json['DurationInSeconds'] title = video_json['Title'] formats = [{'url': fmt['Url'], 'ext': fmt['Extension'], 'width': fmt['Width'], 'height': fmt['Height'], 'filesize': fmt['FileSize'], 'format_id': str(fmt['Resolution']) } for fmt in video_json['Formats']] self._sort_formats(formats) if self._downloader.params.get('listsubtitles', False): self._list_available_subtitles(video_id, page) return subtitles = self._fix_subtitles(self.extract_subtitles(video_id, page)) return { 'id': video_id, 'title': title, 'duration': duration, 'subtitles': subtitles, 'formats': formats } _TIMECODE_REGEX = r'\[(?P\d+:\d+:\d+[\.,]\d+)\]' def _fix_subtitles(self, subtitles): fixed_subtitles = {} for k, v in subtitles.items(): subs = json.loads(v) if len(subs) == 0: continue srt = '' for pos in range(0, len(subs) - 1): seq_current = subs[pos] m_current = re.match(self._TIMECODE_REGEX, seq_current['Timecode']) if m_current is None: continue seq_next = subs[pos + 1] m_next = re.match(self._TIMECODE_REGEX, seq_next['Timecode']) if m_next is None: continue appear_time = m_current.group('timecode') disappear_time = m_next.group('timecode') text = seq_current['Caption'] srt += '%s\r\n%s --> %s\r\n%s' % (str(pos), appear_time, disappear_time, text) if srt: fixed_subtitles[k] = srt return fixed_subtitles def _get_available_subtitles(self, video_id, webpage): url = 'http://www.lynda.com/ajax/player?videoId=%s&type=transcript' % video_id sub = self._download_webpage(url, None, note=False) sub_json = json.loads(sub) return {'en': url} if len(sub_json) > 0 else {} class LyndaCourseIE(InfoExtractor): IE_NAME = 'lynda:course' IE_DESC = '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[^/]+/[^/]+/(?P\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, 'Downloading course JSON') course_json = json.loads(page) if 'Status' in course_json and course_json['Status'] == 'NotFound': raise ExtractorError('Course %s does not exist' % course_id, expected=True) unaccessible_videos = 0 videos = [] for chapter in course_json['Chapters']: for video in chapter['Videos']: if video['HasAccess'] is not True: unaccessible_videos += 1 continue videos.append(video['ID']) if unaccessible_videos > 0: self._downloader.report_warning('%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['Title'] return self.playlist_result(entries, course_id, course_title)