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[extractor/common] Add initial support for JSON-LD metadata extraction into info_dict

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This commit is contained in:
Sergey M․ 2016-01-16 00:36:02 +06:00
parent a78d6a9bb1
commit 4ca2a3cf3c
1 changed files with 37 additions and 0 deletions
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37
youtube_dl/extractor/common.py
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@ -34,6 +34,7 @@
fix_xml_ampersands, fix_xml_ampersands,
float_or_none, float_or_none,
int_or_none, int_or_none,
parse_iso8601,
RegexNotFoundError, RegexNotFoundError,
sanitize_filename, sanitize_filename,
sanitized_Request, sanitized_Request,
@ -762,6 +763,42 @@ def _twitter_search_player(self, html):
return self._html_search_meta('twitter:player', html, return self._html_search_meta('twitter:player', html,
'twitter card player') 'twitter card player')
def _search_json_ld(self, html, video_id, fatal=True):
json_ld = self._search_regex(
r'(?s)<script[^>]+type=(["\'])application/ld\+json\1[^>]*>(?P<json_ld>.+?)</script>',
html, 'JSON-LD', fatal=fatal, group='json_ld')
if not json_ld:
return {}
return self._json_ld(json_ld, video_id, fatal=fatal)
def _json_ld(self, json_ld, video_id, fatal=True):
if isinstance(json_ld, compat_str):
json_ld = self._parse_json(json_ld, video_id, fatal=fatal)
if not json_ld:
return {}
info = {}
if json_ld.get('@context') == 'http://schema.org':
item_type = json_ld.get('@type')
if item_type == 'TVEpisode':
info.update({
'episode': unescapeHTML(json_ld.get('name')),
'episode_number': int_or_none(json_ld.get('episodeNumber')),
'description': unescapeHTML(json_ld.get('description')),
})
part_of_season = json_ld.get('partOfSeason')
if isinstance(part_of_season, dict) and part_of_season.get('@type') == 'TVSeason':
info['season_number'] = int_or_none(part_of_season.get('seasonNumber'))
part_of_series = json_ld.get('partOfSeries')
if isinstance(part_of_series, dict) and part_of_series.get('@type') == 'TVSeries':
info['series'] = unescapeHTML(part_of_series.get('name'))
elif item_type == 'Article':
info.update({
'timestamp': parse_iso8601(json_ld.get('datePublished')),
'title': unescapeHTML(json_ld.get('headline')),
'description': unescapeHTML(json_ld.get('articleBody')),
})
return dict((k, v) for k, v in info.items() if v is not None)
@staticmethod @staticmethod
def _hidden_inputs(html): def _hidden_inputs(html):
html = re.sub(r'<!--(?:(?!<!--).)*-->', '', html) html = re.sub(r'<!--(?:(?!<!--).)*-->', '', html)