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import socket
from .common import InfoExtractor
from ..utils import (
compat_http_client,
compat_urllib_error,
compat_urllib_request,
compat_str,
)
class SubtitlesIE(InfoExtractor):
def report_video_subtitles_available(self, video_id, sub_lang_list):
"""Report available subtitles."""
sub_lang = ",".join(list(sub_lang_list.keys()))
self.to_screen(u'%s: Available subtitles for video: %s' % (video_id, sub_lang))
def _list_available_subtitles(self, video_id):
sub_lang_list = self._get_available_subtitles(video_id)
self.report_video_subtitles_available(video_id, sub_lang_list)
def _extract_subtitles(self, video_id):
"""
Return a dictionary: {language: subtitles} or {} if the subtitles
couldn't be found
"""
sub_lang_list = self._get_available_subtitles(video_id)
sub_format = self._downloader.params.get('subtitlesformat')
if not sub_lang_list: #There was some error, it didn't get the available subtitles
return {}
if self._downloader.params.get('writesubtitles', False):
if self._downloader.params.get('subtitleslang', False):
sub_lang = self._downloader.params.get('subtitleslang')
elif 'en' in sub_lang_list:
sub_lang = 'en'
else:
sub_lang = list(sub_lang_list.keys())[0]
if not sub_lang in sub_lang_list:
self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
return {}
sub_lang_list = {sub_lang: sub_lang_list[sub_lang]}
subtitles = {}
for sub_lang in sub_lang_list:
subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format)
if subtitle:
subtitles[sub_lang] = subtitle
return subtitles
def _request_subtitle(self, sub_lang, sub_name, video_id, format):
""" Return the subtitle as a string or None if they are not found """
# return (u'Did not fetch video subtitles for %s' % sub_lang, None, None)
self.to_screen(u'%s: Downloading video subtitles for %s.%s' % (video_id, sub_lang, format))
url = self._get_subtitle_url(sub_lang, sub_name, video_id, format)
try:
sub = compat_urllib_request.urlopen(url).read().decode('utf-8')
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
self._downloader.report_warning(u'unable to download video subtitles for %s: %s' % (sub_lang, compat_str(err)))
return
if not sub:
self._downloader.report_warning(u'Did not fetch video subtitles')
return
return sub
def _get_available_subtitles(self, video_id):
"""Get available subtitles. Redefine in subclasses."""
"""returns {(lang, url)} """
# return {}
pass
def _get_subtitle_url(self, sub_lang, sub_name, video_id, format):
"""returns the url for the given subtitle. Redefine in subclasses."""
pass
def _request_automatic_caption(self, video_id, webpage):
"""Request automatic caption. Redefine in subclasses."""
"""returns a tuple of ... """
# return [(err_msg, None, None)]
pass
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