mirror of
https://github.com/l1ving/youtube-dl
synced 2024-11-22 13:02:51 +08:00
120 lines
4.7 KiB
Python
120 lines
4.7 KiB
Python
import re
|
|
import socket
|
|
import xml.etree.ElementTree
|
|
|
|
from .common import InfoExtractor
|
|
from ..utils import (
|
|
compat_http_client,
|
|
compat_str,
|
|
compat_urllib_error,
|
|
compat_urllib_request,
|
|
|
|
ExtractorError,
|
|
orderedSet,
|
|
unescapeHTML,
|
|
)
|
|
|
|
|
|
class StanfordOpenClassroomIE(InfoExtractor):
|
|
IE_NAME = u'stanfordoc'
|
|
IE_DESC = u'Stanford Open ClassRoom'
|
|
_VALID_URL = r'^(?:https?://)?openclassroom.stanford.edu(?P<path>/?|(/MainFolder/(?:HomePage|CoursePage|VideoPage)\.php([?]course=(?P<course>[^&]+)(&video=(?P<video>[^&]+))?(&.*)?)?))$'
|
|
_TEST = {
|
|
u'url': u'http://openclassroom.stanford.edu/MainFolder/VideoPage.php?course=PracticalUnix&video=intro-environment&speed=100',
|
|
u'file': u'PracticalUnix_intro-environment.mp4',
|
|
u'md5': u'544a9468546059d4e80d76265b0443b8',
|
|
u'info_dict': {
|
|
u"title": u"Intro Environment"
|
|
}
|
|
}
|
|
|
|
def _real_extract(self, url):
|
|
mobj = re.match(self._VALID_URL, url)
|
|
if mobj is None:
|
|
raise ExtractorError(u'Invalid URL: %s' % url)
|
|
|
|
if mobj.group('course') and mobj.group('video'): # A specific video
|
|
course = mobj.group('course')
|
|
video = mobj.group('video')
|
|
info = {
|
|
'id': course + '_' + video,
|
|
'uploader': None,
|
|
'upload_date': None,
|
|
}
|
|
|
|
self.report_extraction(info['id'])
|
|
baseUrl = 'http://openclassroom.stanford.edu/MainFolder/courses/' + course + '/videos/'
|
|
xmlUrl = baseUrl + video + '.xml'
|
|
try:
|
|
metaXml = compat_urllib_request.urlopen(xmlUrl).read()
|
|
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
|
raise ExtractorError(u'Unable to download video info XML: %s' % compat_str(err))
|
|
mdoc = xml.etree.ElementTree.fromstring(metaXml)
|
|
try:
|
|
info['title'] = mdoc.findall('./title')[0].text
|
|
info['url'] = baseUrl + mdoc.findall('./videoFile')[0].text
|
|
except IndexError:
|
|
raise ExtractorError(u'Invalid metadata XML file')
|
|
info['ext'] = info['url'].rpartition('.')[2]
|
|
return [info]
|
|
elif mobj.group('course'): # A course page
|
|
course = mobj.group('course')
|
|
info = {
|
|
'id': course,
|
|
'type': 'playlist',
|
|
'uploader': None,
|
|
'upload_date': None,
|
|
}
|
|
|
|
coursepage = self._download_webpage(url, info['id'],
|
|
note='Downloading course info page',
|
|
errnote='Unable to download course info page')
|
|
|
|
info['title'] = self._html_search_regex('<h1>([^<]+)</h1>', coursepage, 'title', default=info['id'])
|
|
|
|
info['description'] = self._html_search_regex('<description>([^<]+)</description>',
|
|
coursepage, u'description', fatal=False)
|
|
|
|
links = orderedSet(re.findall('<a href="(VideoPage.php\?[^"]+)">', coursepage))
|
|
info['list'] = [
|
|
{
|
|
'type': 'reference',
|
|
'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(vpage),
|
|
}
|
|
for vpage in links]
|
|
results = []
|
|
for entry in info['list']:
|
|
assert entry['type'] == 'reference'
|
|
results += self.extract(entry['url'])
|
|
return results
|
|
else: # Root page
|
|
info = {
|
|
'id': 'Stanford OpenClassroom',
|
|
'type': 'playlist',
|
|
'uploader': None,
|
|
'upload_date': None,
|
|
}
|
|
|
|
self.report_download_webpage(info['id'])
|
|
rootURL = 'http://openclassroom.stanford.edu/MainFolder/HomePage.php'
|
|
try:
|
|
rootpage = compat_urllib_request.urlopen(rootURL).read()
|
|
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
|
raise ExtractorError(u'Unable to download course info page: ' + compat_str(err))
|
|
|
|
info['title'] = info['id']
|
|
|
|
links = orderedSet(re.findall('<a href="(CoursePage.php\?[^"]+)">', rootpage))
|
|
info['list'] = [
|
|
{
|
|
'type': 'reference',
|
|
'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(cpage),
|
|
}
|
|
for cpage in links]
|
|
|
|
results = []
|
|
for entry in info['list']:
|
|
assert entry['type'] == 'reference'
|
|
results += self.extract(entry['url'])
|
|
return results
|