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OpenClassRoom IE (Closes: #234)
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Philipp Hagemeister
parent
dd17922afc
commit
0b14e0b367
1 changed files with 78 additions and 24 deletions
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@ -282,6 +282,14 @@ def _simplify_title(title):
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expr = re.compile(ur'[^\w\d_\-]+', flags=re.UNICODE)
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return expr.sub(u'_', title).strip(u'_')
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def _orderedSet(iterable):
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""" Remove all duplicates from the input iterable """
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res = []
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for el in iterable:
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if el not in res:
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res.append(el)
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return res
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class DownloadError(Exception):
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"""Download Error exception.
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@ -711,25 +719,6 @@ def _match_entry(self, info_dict):
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return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
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return None
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def process_dict(self, info_dict):
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""" Download and handle the extracted information.
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For details on the specification of the various types of content, refer to the _process_* functions. """
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if info_dict['type'] == 'playlist':
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self._process_playlist(info_dict)
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elif info_dict['type'] == 'legacy-video':
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self.process_info(info_dict)
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else:
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raise ValueError('Invalid item type')
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def _process_playlist(self, info_dict):
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assert info_dict['type'] == 'playlist'
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assert 'title' in info_dict
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assert 'stitle' in info_dict
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entries = info_dict['list']
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for e in entries:
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self.process_dict(e)
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def process_info(self, info_dict):
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"""Process a single dictionary returned by an InfoExtractor."""
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@ -3766,9 +3755,13 @@ def _real_extract(self, url):
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class StanfordOpenClassroomIE(InfoExtractor):
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"""Information extractor for Stanford's Open ClassRoom"""
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_VALID_URL = r'^(?:https?://)?openclassroom.stanford.edu(?P<path>/|(/MainFolder/(?:HomePage|CoursePage|VideoPage)\.php([?]course=(?P<course>[^&]+)(&video=(?P<video>[^&]+))?(&.*)?)?))$'
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_VALID_URL = r'^(?:https?://)?openclassroom.stanford.edu(?P<path>/?|(/MainFolder/(?:HomePage|CoursePage|VideoPage)\.php([?]course=(?P<course>[^&]+)(&video=(?P<video>[^&]+))?(&.*)?)?))$'
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IE_NAME = u'stanfordoc'
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def report_download_webpage(self, objid):
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"""Report information extraction."""
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self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, objid))
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def report_extraction(self, video_id):
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"""Report information extraction."""
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self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
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@ -3792,7 +3785,7 @@ def _real_extract(self, url):
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try:
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metaXml = urllib2.urlopen(xmlUrl).read()
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except (urllib2.URLError, httplib.HTTPException, socket.error), err:
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self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % str(err))
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self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % unicode(err))
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return
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mdoc = xml.etree.ElementTree.fromstring(metaXml)
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try:
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@ -3809,13 +3802,74 @@ def _real_extract(self, url):
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self._downloader.process_info(info)
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except UnavailableVideoError, err:
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self._downloader.trouble(u'\nERROR: unable to download video')
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elif mobj.group('course'): # A course page
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unescapeHTML = HTMLParser.HTMLParser().unescape
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course = mobj.group('course')
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info = {
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'id': _simplify_title(course),
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'type': 'playlist',
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}
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self.report_download_webpage(info['id'])
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try:
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coursepage = urllib2.urlopen(url).read()
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except (urllib2.URLError, httplib.HTTPException, socket.error), err:
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self._downloader.trouble(u'ERROR: unable to download course info page: ' + unicode(err))
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return
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m = re.search('<h1>([^<]+)</h1>', coursepage)
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if m:
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info['title'] = unescapeHTML(m.group(1))
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else:
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print('TODO: Not yet implemented')
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1/0
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info['title'] = info['id']
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info['stitle'] = _simplify_title(info['title'])
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m = re.search('<description>([^<]+)</description>', coursepage)
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if m:
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info['description'] = unescapeHTML(m.group(1))
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links = _orderedSet(re.findall('<a href="(VideoPage.php\?[^"]+)">', coursepage))
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info['list'] = [
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{
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'type': 'reference',
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'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(vpage),
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}
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for vpage in links]
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for entry in info['list']:
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assert entry['type'] == 'reference'
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self.extract(entry['url'])
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else: # Root page
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unescapeHTML = HTMLParser.HTMLParser().unescape
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info = {
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'id': 'Stanford OpenClassroom',
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'type': 'playlist',
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}
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self.report_download_webpage(info['id'])
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rootURL = 'http://openclassroom.stanford.edu/MainFolder/HomePage.php'
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try:
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rootpage = urllib2.urlopen(rootURL).read()
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except (urllib2.URLError, httplib.HTTPException, socket.error), err:
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self._downloader.trouble(u'ERROR: unable to download course info page: ' + unicode(err))
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return
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info['title'] = info['id']
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info['stitle'] = _simplify_title(info['title'])
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links = _orderedSet(re.findall('<a href="(CoursePage.php\?[^"]+)">', rootpage))
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info['list'] = [
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{
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'type': 'reference',
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'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(cpage),
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}
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for cpage in links]
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for entry in info['list']:
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assert entry['type'] == 'reference'
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self.extract(entry['url'])
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class PostProcessor(object):
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