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[ie] Add _search_nuxt_json helper (#13386)

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* Adds InfoExtractor._search_nuxt_json for webpage extraction
* Adds InfoExtractor._resolve_nuxt_array for direct use with payload JSON
* Adds yt_dlp.utils.jslib module for Python solutions to common JavaScript libraries
* Adds devalue.parse and devalue.parse_iter to jslib utils

Ref:
* 9e503be0f2
* f3fd2aa93d/src/parse.js

Authored by: bashonly, Grub4K

Co-authored-by: Simon Sawicki <contact@grub4k.dev>
This commit is contained in:
bashonly
2025-06-12 17:15:01 -05:00
committed by GitHub
parent ba090caeaa
commit 51887484e4
5 changed files with 592 additions and 0 deletions
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131
test/test_InfoExtractor.py
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@ -1947,6 +1947,137 @@ jwplayer("mediaplayer").setup({"abouttext":"Visit Indie DB","aboutlink":"http:\/
with self.assertWarns(DeprecationWarning):
self.assertEqual(self.ie._search_nextjs_data('', None, default='{}'), {})
def test_search_nuxt_json(self):
HTML_TMPL = '<script data-ssr="true" id="__NUXT_DATA__" type="application/json">[{}]</script>'
VALID_DATA = '''
["ShallowReactive",1],
{"data":2,"state":21,"once":25,"_errors":28,"_server_errors":30},
["ShallowReactive",3],
{"$abcdef123456":4},
{"podcast":5,"activeEpisodeData":7},
{"podcast":6,"seasons":14},
{"title":10,"id":11},
["Reactive",8],
{"episode":9,"creators":18,"empty_list":20},
{"title":12,"id":13,"refs":34,"empty_refs":35},
"Series Title",
"podcast-id-01",
"Episode Title",
"episode-id-99",
[15,16,17],
1,
2,
3,
[19],
"Podcast Creator",
[],
{"$ssite-config":22},
{"env":23,"name":24,"map":26,"numbers":14},
"production",
"podcast-website",
["Set"],
["Reactive",27],
["Map"],
["ShallowReactive",29],
{},
["NuxtError",31],
{"status":32,"message":33},
503,
"Service Unavailable",
[36,37],
[38,39],
["Ref",40],
["ShallowRef",41],
["EmptyRef",42],
["EmptyShallowRef",43],
"ref",
"shallow_ref",
"{\\"ref\\":1}",
"{\\"shallow_ref\\":2}"
'''
PAYLOAD = {
'data': {
'$abcdef123456': {
'podcast': {
'podcast': {
'title': 'Series Title',
'id': 'podcast-id-01',
},
'seasons': [1, 2, 3],
},
'activeEpisodeData': {
'episode': {
'title': 'Episode Title',
'id': 'episode-id-99',
'refs': ['ref', 'shallow_ref'],
'empty_refs': [{'ref': 1}, {'shallow_ref': 2}],
},
'creators': ['Podcast Creator'],
'empty_list': [],
},
},
},
'state': {
'$ssite-config': {
'env': 'production',
'name': 'podcast-website',
'map': [],
'numbers': [1, 2, 3],
},
},
'once': [],
'_errors': {},
'_server_errors': {
'status': 503,
'message': 'Service Unavailable',
},
}
PARTIALLY_INVALID = [(
'''
{"data":1},
{"invalid_raw_list":2},
[15,16,17]
''',
{'data': {'invalid_raw_list': [None, None, None]}},
), (
'''
{"data":1},
["EmptyRef",2],
"not valid JSON"
''',
{'data': None},
), (
'''
{"data":1},
["EmptyShallowRef",2],
"not valid JSON"
''',
{'data': None},
)]
INVALID = [
'''
[]
''',
'''
["unsupported",1],
{"data":2},
{}
''',
]
DEFAULT = object()
self.assertEqual(self.ie._search_nuxt_json(HTML_TMPL.format(VALID_DATA), None), PAYLOAD)
self.assertEqual(self.ie._search_nuxt_json('', None, fatal=False), {})
self.assertIs(self.ie._search_nuxt_json('', None, default=DEFAULT), DEFAULT)
for data, expected in PARTIALLY_INVALID:
self.assertEqual(
self.ie._search_nuxt_json(HTML_TMPL.format(data), None, fatal=False), expected)
for data in INVALID:
self.assertIs(
self.ie._search_nuxt_json(HTML_TMPL.format(data), None, default=DEFAULT), DEFAULT)
if __name__ == '__main__':
unittest.main()