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