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55e466b153
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55e466b153 |
@ -425,34 +425,6 @@ class TestJSInterpreter(unittest.TestCase):
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self._test(jsi, [''], args=['', '-'])
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self._test(jsi, [], args=['', ''])
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def test_slice(self):
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice()}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(5)}', [5, 6, 7, 8])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(99)}', [])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-2)}', [7, 8])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-99)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 0)}', [])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, 0)}', [])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 1)}', [0])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(3, 6)}', [3, 4, 5])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, -1)}', [1, 2, 3, 4, 5, 6, 7])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-1, 1)}', [])
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self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-3, -1)}', [6, 7])
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self._test('function f(){return "012345678".slice()}', '012345678')
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self._test('function f(){return "012345678".slice(0)}', '012345678')
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self._test('function f(){return "012345678".slice(5)}', '5678')
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self._test('function f(){return "012345678".slice(99)}', '')
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self._test('function f(){return "012345678".slice(-2)}', '78')
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self._test('function f(){return "012345678".slice(-99)}', '012345678')
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self._test('function f(){return "012345678".slice(0, 0)}', '')
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self._test('function f(){return "012345678".slice(1, 0)}', '')
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self._test('function f(){return "012345678".slice(0, 1)}', '0')
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self._test('function f(){return "012345678".slice(3, 6)}', '345')
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self._test('function f(){return "012345678".slice(1, -1)}', '1234567')
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self._test('function f(){return "012345678".slice(-1, 1)}', '')
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self._test('function f(){return "012345678".slice(-3, -1)}', '67')
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if __name__ == '__main__':
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unittest.main()
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@ -174,14 +174,6 @@ _NSIG_TESTS = [
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'https://www.youtube.com/s/player/5604538d/player_ias.vflset/en_US/base.js',
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'7X-he4jjvMx7BCX', 'sViSydX8IHtdWA',
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),
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(
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'https://www.youtube.com/s/player/20dfca59/player_ias.vflset/en_US/base.js',
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'-fLCxedkAk4LUTK2', 'O8kfRq1y1eyHGw',
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),
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(
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'https://www.youtube.com/s/player/b12cc44b/player_ias.vflset/en_US/base.js',
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'keLa5R2U00sR9SQK', 'N1OGyujjEwMnLw',
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),
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]
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@ -1659,46 +1659,17 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
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def _extract_n_function_name(self, jscode):
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func_name, idx = self._search_regex(
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# new: (b=String.fromCharCode(110),c=a.get(b))&&c=nfunc[idx](c)
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# or: (b="nn"[+a.D],c=a.get(b))&&(c=nfunc[idx](c)
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# or: (PL(a),b=a.j.n||null)&&(b=nfunc[idx](b)
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# or: (b="nn"[+a.D],vL(a),c=a.j[b]||null)&&(c=narray[idx](c),a.set(b,c),narray.length||nfunc("")
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# old: (b=a.get("n"))&&(b=nfunc[idx](b)(?P<c>[a-z])\s*=\s*[a-z]\s*
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# older: (b=a.get("n"))&&(b=nfunc(b)
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# or: (b="nn"[+a.D],c=a.get(b))&&(c=nfunc[idx](c)s
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# old: .get("n"))&&(b=nfunc[idx](b)
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# older: .get("n"))&&(b=nfunc(b)
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r'''(?x)
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\((?:[\w$()\s]+,)*?\s* # (
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(?P<b>[a-z])\s*=\s* # b=
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(?:
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(?: # expect ,c=a.get(b) (etc)
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(?:\(\s*(?P<b>[a-z])\s*=\s*(?:
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String\s*\.\s*fromCharCode\s*\(\s*110\s*\)|
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"n+"\[\s*\+?s*[\w$.]+\s*]
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)\s*(?:,[\w$()\s]+(?=,))*|
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(?P<old>[\w$]+) # a (old[er])
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)\s*
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(?(old)
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# b.get("n")
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(?:\.\s*[\w$]+\s*|\[\s*[\w$]+\s*]\s*)*?
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(?:\.\s*n|\[\s*"n"\s*]|\.\s*get\s*\(\s*"n"\s*\))
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| # ,c=a.get(b)
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,\s*(?P<c>[a-z])\s*=\s*[a-z]\s*
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(?:\.\s*[\w$]+\s*|\[\s*[\w$]+\s*]\s*)*?
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(?:\[\s*(?P=b)\s*]|\.\s*get\s*\(\s*(?P=b)\s*\))
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)
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# interstitial junk
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\s*(?:\|\|\s*null\s*)?(?:\)\s*)?&&\s*(?:\(\s*)?
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(?(c)(?P=c)|(?P=b))\s*=\s* # [c|b]=
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# nfunc|nfunc[idx]
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)\s*,(?P<c>[a-z])\s*=\s*[a-z]\s*)?
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\.\s*get\s*\(\s*(?(b)(?P=b)|"n{1,2}")(?:\s*\)){2}\s*&&\s*\(\s*(?(c)(?P=c)|b)\s*=\s*
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(?P<nfunc>[a-zA-Z_$][\w$]*)(?:\s*\[(?P<idx>\d+)\])?\s*\(\s*[\w$]+\s*\)
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''', jscode, 'Initial JS player n function name', group=('nfunc', 'idx'),
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default=(None, None))
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# thx bashonly: yt-dlp/yt-dlp/pull/10611
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if not func_name:
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self.report_warning('Falling back to generic n function search')
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return self._search_regex(
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r'''(?xs)
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(?:(?<=[^\w$])|^) # instead of \b, which ignores $
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(?P<name>(?!\d)[a-zA-Z\d_$]+)\s*=\s*function\((?!\d)[a-zA-Z\d_$]+\)
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\s*\{(?:(?!};).)+?["']enhanced_except_
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''', jscode, 'Initial JS player n function name', group='name')
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''', jscode, 'Initial JS player n function name', group=('nfunc', 'idx'))
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if not idx:
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return func_name
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@ -925,16 +925,9 @@ class JSInterpreter(object):
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obj.reverse()
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return obj
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elif member == 'slice':
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assertion(isinstance(obj, (list, compat_str)), 'must be applied on a list or string')
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# From [1]:
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# .slice() - like [:]
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# .slice(n) - like [n:] (not [slice(n)]
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# .slice(m, n) - like [m:n] or [slice(m, n)]
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# [1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
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assertion(len(argvals) <= 2, 'takes between 0 and 2 arguments')
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if len(argvals) < 2:
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argvals += (None,)
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return obj[slice(*argvals)]
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assertion(isinstance(obj, list), 'must be applied on a list')
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assertion(len(argvals) == 1, 'takes exactly one argument')
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return obj[argvals[0]:]
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elif member == 'splice':
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assertion(isinstance(obj, list), 'must be applied on a list')
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assertion(argvals, 'takes one or more arguments')
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