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[lecturio] Add extractor (closes #18405)
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Sergey M․
186
youtube_dl/extractor/lecturio.py
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186
youtube_dl/extractor/lecturio.py
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# coding: utf-8
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from __future__ import unicode_literals
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import re
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from .common import InfoExtractor
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from ..compat import compat_str
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from ..utils import (
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determine_ext,
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extract_attributes,
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ExtractorError,
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float_or_none,
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int_or_none,
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str_or_none,
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url_or_none,
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urlencode_postdata,
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urljoin,
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)
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class LecturioBaseIE(InfoExtractor):
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_LOGIN_URL = 'https://app.lecturio.com/en/login'
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_NETRC_MACHINE = 'lecturio'
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def _real_initialize(self):
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self._login()
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def _login(self):
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username, password = self._get_login_info()
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if username is None:
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return
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# Sets some cookies
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_, urlh = self._download_webpage_handle(
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self._LOGIN_URL, None, 'Downloading login popup')
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def is_logged(url_handle):
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return self._LOGIN_URL not in compat_str(url_handle.geturl())
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# Already logged in
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if is_logged(urlh):
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return
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login_form = {
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'signin[email]': username,
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'signin[password]': password,
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'signin[remember]': 'on',
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}
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response, urlh = self._download_webpage_handle(
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self._LOGIN_URL, None, 'Logging in',
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data=urlencode_postdata(login_form))
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# Logged in successfully
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if is_logged(urlh):
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return
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errors = self._html_search_regex(
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r'(?s)<ul[^>]+class=["\']error_list[^>]+>(.+?)</ul>', response,
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'errors', default=None)
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if errors:
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raise ExtractorError('Unable to login: %s' % errors, expected=True)
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raise ExtractorError('Unable to log in')
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class LecturioIE(LecturioBaseIE):
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_VALID_URL = r'https://app\.lecturio\.com/[^/]+/(?P<id>[^/?#&]+)\.lecture'
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_TEST = {
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'url': 'https://app.lecturio.com/medical-courses/important-concepts-and-terms-introduction-to-microbiology.lecture#tab/videos',
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'md5': 'f576a797a5b7a5e4e4bbdfc25a6a6870',
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'info_dict': {
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'id': '39634',
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'ext': 'mp4',
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'title': 'Important Concepts and Terms – Introduction to Microbiology',
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},
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'skip': 'Requires lecturio account credentials',
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}
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_CC_LANGS = {
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'German': 'de',
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'English': 'en',
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'Spanish': 'es',
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'French': 'fr',
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'Polish': 'pl',
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'Russian': 'ru',
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}
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def _real_extract(self, url):
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display_id = self._match_id(url)
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webpage = self._download_webpage(
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'https://app.lecturio.com/en/lecture/%s/player.html' % display_id,
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display_id)
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lecture_id = self._search_regex(
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r'lecture_id\s*=\s*(?:L_)?(\d+)', webpage, 'lecture id')
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api_url = self._search_regex(
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r'lectureDataLink\s*:\s*(["\'])(?P<url>(?:(?!\1).)+)\1', webpage,
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'api url', group='url')
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video = self._download_json(api_url, display_id)
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title = video['title'].strip()
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formats = []
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for format_ in video['content']['media']:
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if not isinstance(format_, dict):
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continue
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file_ = format_.get('file')
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if not file_:
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continue
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ext = determine_ext(file_)
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if ext == 'smil':
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# smil contains only broken RTMP formats anyway
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continue
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file_url = url_or_none(file_)
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if not file_url:
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continue
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label = str_or_none(format_.get('label'))
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filesize = int_or_none(format_.get('fileSize'))
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formats.append({
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'url': file_url,
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'format_id': label,
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'filesize': float_or_none(filesize, invscale=1000)
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})
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self._sort_formats(formats)
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subtitles = {}
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automatic_captions = {}
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cc = self._parse_json(
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self._search_regex(
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r'subtitleUrls\s*:\s*({.+?})\s*,', webpage, 'subtitles',
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default='{}'), display_id, fatal=False)
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for cc_label, cc_url in cc.items():
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cc_url = url_or_none(cc_url)
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if not cc_url:
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continue
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sub_dict = automatic_captions if 'auto-translated' in cc_label else subtitles
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lang = self._search_regex(
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r'/([a-z]{2})_', cc_url, 'lang', default=cc_label.split()[0])
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sub_dict.setdefault(self._CC_LANGS.get(lang, lang), []).append({
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'url': cc_url,
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})
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return {
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'id': lecture_id,
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'title': title,
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'formats': formats,
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'subtitles': subtitles,
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'automatic_captions': automatic_captions,
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}
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class LecturioCourseIE(LecturioBaseIE):
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_VALID_URL = r'https://app\.lecturio\.com/[^/]+/(?P<id>[^/?#&]+)\.course'
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_TEST = {
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'url': 'https://app.lecturio.com/medical-courses/microbiology-introduction.course#/',
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'info_dict': {
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'id': 'microbiology-introduction',
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'title': 'Microbiology: Introduction',
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},
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'playlist_count': 45,
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'skip': 'Requires lecturio account credentials',
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}
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def _real_extract(self, url):
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display_id = self._match_id(url)
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webpage = self._download_webpage(url, display_id)
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entries = []
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for mobj in re.finditer(
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r'(?s)<[^>]+\bdata-url=(["\'])(?:(?!\1).)+\.lecture\b[^>]+>',
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webpage):
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params = extract_attributes(mobj.group(0))
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lecture_url = urljoin(url, params.get('data-url'))
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lecture_id = params.get('data-id')
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entries.append(self.url_result(
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lecture_url, ie=LecturioIE.ie_key(), video_id=lecture_id))
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title = self._search_regex(
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r'<span[^>]+class=["\']content-title[^>]+>([^<]+)', webpage,
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'title', default=None)
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return self.playlist_result(entries, display_id, title)
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