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80 lines
3.2 KiB
80 lines
3.2 KiB
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 SubtitlesInfoExtractor(InfoExtractor): |
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def _list_available_subtitles(self, video_id): |
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""" outputs the available subtitles for the video """ |
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sub_lang_list = self._get_available_subtitles(video_id) |
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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' % |
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(video_id, sub_lang)) |
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def _extract_subtitles(self, video_id): |
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""" returns {sub_lang: sub} or {} if subtitles not found """ |
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available_subs_list = self._get_available_subtitles(video_id) |
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if not available_subs_list: # error, it didn't get the available subtitles |
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return {} |
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if self._downloader.params.get('allsubtitles', False): |
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sub_lang_list = available_subs_list |
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else: |
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if self._downloader.params.get('writesubtitles', False): |
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if self._downloader.params.get('subtitleslangs', False): |
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requested_langs = self._downloader.params.get('subtitleslangs') |
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elif 'en' in available_subs_list: |
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requested_langs = ['en'] |
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else: |
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requested_langs = [list(available_subs_list.keys())[0]] |
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sub_lang_list = {} |
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for sub_lang in requested_langs: |
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if not sub_lang in available_subs_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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continue |
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sub_lang_list[sub_lang] = available_subs_list[sub_lang] |
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subtitles = {} |
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for sub_lang, url in sub_lang_list.items(): |
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subtitle = self._request_subtitle_url(sub_lang, url) |
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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_url(self, sub_lang, url): |
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""" makes the http request for the subtitle """ |
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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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""" returns {sub_lang: url} or {} if not available """ |
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""" Must be redefined by the subclasses """ |
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pass |
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def _request_automatic_caption(self, video_id, webpage): |
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""" returns {sub_lang: sub} or {} if not available """ |
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""" Must be redefined by the subclasses """ |
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pass |
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class NoAutoSubtitlesInfoExtractor(SubtitlesInfoExtractor): |
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""" A subtitle class for the servers that don't support auto-captions""" |
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def _request_automatic_caption(self, video_id, webpage): |
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self._downloader.report_warning(u'Automatic Captions not supported by this server') |
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return {}
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