mirror of
https://github.com/ytdl-org/youtube-dl
synced 2024-11-23 11:36:56 +01:00
[jsinterp] Overhaul JSInterp to handle new YT players 4c3f79c5, 324f67b9 (#31170)
* back-port from yt-dlp 8f53dc44a0cc1c2d98c35740b9293462c080f5d0, thanks pukkandan * also support void, improve <</>> precedence, improve expressions in comma-list * add more tests
This commit is contained in:
dirkf
GitHub
parent
e6a836d54c
commit
d231b56717
@ -19,6 +19,9 @@ class TestJSInterpreter(unittest.TestCase):
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jsi = JSInterpreter('function x3(){return 42;}')
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self.assertEqual(jsi.call_function('x3'), 42)
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jsi = JSInterpreter('function x3(){42}')
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self.assertEqual(jsi.call_function('x3'), None)
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jsi = JSInterpreter('var x5 = function(){return 42;}')
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self.assertEqual(jsi.call_function('x5'), 42)
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@ -51,8 +54,11 @@ class TestJSInterpreter(unittest.TestCase):
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jsi = JSInterpreter('function f(){return 11 >> 2;}')
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self.assertEqual(jsi.call_function('f'), 2)
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jsi = JSInterpreter('function f(){return []? 2+3: 4;}')
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self.assertEqual(jsi.call_function('f'), 5)
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def test_array_access(self):
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jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2] = 7; return x;}')
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jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}')
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self.assertEqual(jsi.call_function('f'), [5, 2, 7])
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def test_parens(self):
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@ -62,6 +68,10 @@ class TestJSInterpreter(unittest.TestCase):
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jsi = JSInterpreter('function f(){return (1 + 2) * 3;}')
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self.assertEqual(jsi.call_function('f'), 9)
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def test_quotes(self):
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jsi = JSInterpreter(r'function f(){return "a\"\\("}')
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self.assertEqual(jsi.call_function('f'), r'a"\(')
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def test_assignments(self):
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jsi = JSInterpreter('function f(){var x = 20; x = 30 + 1; return x;}')
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self.assertEqual(jsi.call_function('f'), 31)
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@ -104,18 +114,29 @@ class TestJSInterpreter(unittest.TestCase):
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}''')
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self.assertEqual(jsi.call_function('x'), [20, 20, 30, 40, 50])
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def test_builtins(self):
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jsi = JSInterpreter('''
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function x() { return new Date('Wednesday 31 December 1969 18:01:26 MDT') - 0; }
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''')
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self.assertEqual(jsi.call_function('x'), 86000)
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jsi = JSInterpreter('''
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function x(dt) { return new Date(dt) - 0; }
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''')
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self.assertEqual(jsi.call_function('x', 'Wednesday 31 December 1969 18:01:26 MDT'), 86000)
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def test_call(self):
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jsi = JSInterpreter('''
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function x() { return 2; }
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function y(a) { return x() + a; }
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function y(a) { return x() + (a?a:0); }
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function z() { return y(3); }
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''')
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self.assertEqual(jsi.call_function('z'), 5)
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self.assertEqual(jsi.call_function('y'), 2)
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def test_for_loop(self):
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# function x() { a=0; for (i=0; i-10; i++) {a++} a }
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jsi = JSInterpreter('''
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function x() { a=0; for (i=0; i-10; i = i + 1) {a++} a }
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function x() { a=0; for (i=0; i-10; i++) {a++} return a }
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''')
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self.assertEqual(jsi.call_function('x'), 10)
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@ -156,19 +177,19 @@ class TestJSInterpreter(unittest.TestCase):
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def test_for_loop_continue(self):
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jsi = JSInterpreter('''
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function x() { a=0; for (i=0; i-10; i++) { continue; a++ } a }
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function x() { a=0; for (i=0; i-10; i++) { continue; a++ } return a }
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''')
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self.assertEqual(jsi.call_function('x'), 0)
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def test_for_loop_break(self):
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jsi = JSInterpreter('''
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function x() { a=0; for (i=0; i-10; i++) { break; a++ } a }
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function x() { a=0; for (i=0; i-10; i++) { break; a++ } return a }
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''')
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self.assertEqual(jsi.call_function('x'), 0)
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def test_literal_list(self):
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jsi = JSInterpreter('''
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function x() { [1, 2, "asdf", [5, 6, 7]][3] }
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function x() { return [1, 2, "asdf", [5, 6, 7]][3] }
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''')
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self.assertEqual(jsi.call_function('x'), [5, 6, 7])
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@ -177,6 +198,22 @@ class TestJSInterpreter(unittest.TestCase):
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function x() { a=5; a -= 1, a+=3; return a }
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''')
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self.assertEqual(jsi.call_function('x'), 7)
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jsi = JSInterpreter('''
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function x() { a=5; return (a -= 1, a+=3, a); }
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''')
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self.assertEqual(jsi.call_function('x'), 7)
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def test_void(self):
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jsi = JSInterpreter('''
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function x() { return void 42; }
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''')
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self.assertEqual(jsi.call_function('x'), None)
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def test_return_function(self):
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jsi = JSInterpreter('''
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function x() { return [1, function(){return 1}][1] }
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''')
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self.assertEqual(jsi.call_function('x')([]), 1)
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if __name__ == '__main__':
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@ -370,6 +370,9 @@ class TestUtil(unittest.TestCase):
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self.assertEqual(unified_timestamp('Sep 11, 2013 | 5:49 AM'), 1378878540)
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self.assertEqual(unified_timestamp('December 15, 2017 at 7:49 am'), 1513324140)
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self.assertEqual(unified_timestamp('2018-03-14T08:32:43.1493874+00:00'), 1521016363)
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self.assertEqual(unified_timestamp('December 31 1969 20:00:01 EDT'), 1)
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self.assertEqual(unified_timestamp('Wednesday 31 December 1969 18:01:26 MDT'), 86)
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self.assertEqual(unified_timestamp('12/31/1969 20:01:18 EDT', False), 78)
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def test_determine_ext(self):
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self.assertEqual(determine_ext('http://example.com/foo/bar.mp4/?download'), 'mp4')
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@ -90,12 +90,25 @@ _NSIG_TESTS = [
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'https://www.youtube.com/s/player/e06dea74/player_ias.vflset/en_US/base.js',
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'AiuodmaDDYw8d3y4bf', 'ankd8eza2T6Qmw',
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),
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(
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'https://www.youtube.com/s/player/5dd88d1d/player-plasma-ias-phone-en_US.vflset/base.js',
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'kSxKFLeqzv_ZyHSAt', 'n8gS8oRlHOxPFA',
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),
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(
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'https://www.youtube.com/s/player/324f67b9/player_ias.vflset/en_US/base.js',
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'xdftNy7dh9QGnhW', '22qLGxrmX8F1rA',
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),
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(
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'https://www.youtube.com/s/player/4c3f79c5/player_ias.vflset/en_US/base.js',
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'TDCstCG66tEAO5pR9o', 'dbxNtZ14c-yWyw',
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),
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]
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class TestPlayerInfo(unittest.TestCase):
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def test_youtube_extract_player_info(self):
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PLAYER_URLS = (
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('https://www.youtube.com/s/player/4c3f79c5/player_ias.vflset/en_US/base.js', '4c3f79c5'),
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('https://www.youtube.com/s/player/64dddad9/player_ias.vflset/en_US/base.js', '64dddad9'),
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('https://www.youtube.com/s/player/64dddad9/player_ias.vflset/fr_FR/base.js', '64dddad9'),
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('https://www.youtube.com/s/player/64dddad9/player-plasma-ias-phone-en_US.vflset/base.js', '64dddad9'),
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@ -2985,7 +2985,6 @@ except ImportError:
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except ImportError:
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compat_filter = filter
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try:
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from future_builtins import zip as compat_zip
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except ImportError: # not 2.6+ or is 3.x
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@ -2995,6 +2994,57 @@ except ImportError: # not 2.6+ or is 3.x
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compat_zip = zip
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# method renamed between Py2/3
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try:
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from itertools import zip_longest as compat_itertools_zip_longest
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except ImportError:
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from itertools import izip_longest as compat_itertools_zip_longest
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# new class in collections
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try:
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from collections import ChainMap as compat_collections_chain_map
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except ImportError:
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# Py < 3.3
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class compat_collections_chain_map(compat_collections_abc.MutableMapping):
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maps = [{}]
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def __init__(self, *maps):
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self.maps = list(maps) or [{}]
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def __getitem__(self, k):
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for m in self.maps:
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if k in m:
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return m[k]
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raise KeyError(k)
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def __setitem__(self, k, v):
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self.maps[0].__setitem__(k, v)
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return
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def __delitem__(self, k):
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if k in self.maps[0]:
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del self.maps[0][k]
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return
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raise KeyError(k)
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def __iter__(self):
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return itertools.chain(*reversed(self.maps))
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def __len__(self):
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return len(iter(self))
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def new_child(self, m=None, **kwargs):
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m = m or {}
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m.update(kwargs)
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return compat_collections_chain_map(m, *self.maps)
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@property
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def parents(self):
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return compat_collections_chain_map(*(self.maps[1:]))
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if sys.version_info < (3, 3):
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def compat_b64decode(s, *args, **kwargs):
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if isinstance(s, compat_str):
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@ -3031,6 +3081,7 @@ __all__ = [
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'compat_basestring',
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'compat_chr',
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'compat_collections_abc',
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'compat_collections_chain_map',
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'compat_cookiejar',
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'compat_cookiejar_Cookie',
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'compat_cookies',
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@ -3051,6 +3102,7 @@ __all__ = [
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'compat_input',
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'compat_integer_types',
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'compat_itertools_count',
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'compat_itertools_zip_longest',
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'compat_kwargs',
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'compat_map',
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'compat_numeric_types',
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@ -1,42 +1,87 @@
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from __future__ import unicode_literals
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import itertools
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import json
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import math
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import operator
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import re
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from .utils import (
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NO_DEFAULT,
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ExtractorError,
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js_to_json,
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remove_quotes,
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unified_timestamp,
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)
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from .compat import (
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compat_collections_abc,
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compat_collections_chain_map as ChainMap,
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compat_itertools_zip_longest as zip_longest,
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compat_str,
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)
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MutableMapping = compat_collections_abc.MutableMapping
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_NAME_RE = r'[a-zA-Z_$][\w$]*'
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class Nonlocal:
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pass
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# (op, definition) in order of binding priority, tightest first
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# avoid dict to maintain order
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# definition None => Defined in JSInterpreter._operator
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_DOT_OPERATORS = (
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('.', None),
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# TODO: ('?.', None),
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)
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_OPERATORS = [
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_OPERATORS = (
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('|', operator.or_),
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('^', operator.xor),
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('&', operator.and_),
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('>>', operator.rshift),
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('<<', operator.lshift),
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('-', operator.sub),
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('+', operator.add),
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('%', operator.mod),
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('/', operator.truediv),
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('-', operator.sub),
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('*', operator.mul),
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]
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_ASSIGN_OPERATORS = [(op + '=', opfunc) for op, opfunc in _OPERATORS]
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_ASSIGN_OPERATORS.append(('=', (lambda cur, right: right)))
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('/', operator.truediv),
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('%', operator.mod),
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)
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_NAME_RE = r'[a-zA-Z_$][a-zA-Z_$0-9]*'
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_COMP_OPERATORS = (
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('===', operator.is_),
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('==', operator.eq),
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('!==', operator.is_not),
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('!=', operator.ne),
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('<=', operator.le),
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('>=', operator.ge),
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('<', operator.lt),
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('>', operator.gt),
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)
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_LOG_OPERATORS = (
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('&', operator.and_),
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('|', operator.or_),
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('^', operator.xor),
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)
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_SC_OPERATORS = (
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('?', None),
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('||', None),
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('&&', None),
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# TODO: ('??', None),
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)
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_OPERATOR_RE = '|'.join(map(lambda x: re.escape(x[0]), _OPERATORS + _LOG_OPERATORS))
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_MATCHING_PARENS = dict(zip(*zip('()', '{}', '[]')))
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_QUOTES = '\'"'
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def _ternary(cndn, if_true=True, if_false=False):
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"""Simulate JS's ternary operator (cndn?if_true:if_false)"""
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if cndn in (False, None, 0, ''):
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return if_false
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try:
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if math.isnan(cndn): # NB: NaN cannot be checked by membership
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return if_false
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except TypeError:
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pass
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return if_true
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class JS_Break(ExtractorError):
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@ -49,70 +94,77 @@ class JS_Continue(ExtractorError):
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ExtractorError.__init__(self, 'Invalid continue')
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class LocalNameSpace(MutableMapping):
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def __init__(self, *stack):
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self.stack = tuple(stack)
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def __getitem__(self, key):
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for scope in self.stack:
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if key in scope:
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return scope[key]
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raise KeyError(key)
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class LocalNameSpace(ChainMap):
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def __setitem__(self, key, value):
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for scope in self.stack:
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for scope in self.maps:
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if key in scope:
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scope[key] = value
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break
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else:
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self.stack[0][key] = value
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return value
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return
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self.maps[0][key] = value
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def __delitem__(self, key):
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raise NotImplementedError('Deleting is not supported')
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def __iter__(self):
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for scope in self.stack:
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for scope_item in iter(scope):
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yield scope_item
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def __len__(self, key):
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return len(iter(self))
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def __repr__(self):
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return 'LocalNameSpace%s' % (self.stack, )
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return 'LocalNameSpace%s' % (self.maps, )
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class JSInterpreter(object):
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__named_object_counter = 0
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def __init__(self, code, objects=None):
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if objects is None:
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objects = {}
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self.code = code
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self._functions = {}
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self._objects = objects
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self.__named_object_counter = 0
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self.code, self._functions = code, {}
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self._objects = {} if objects is None else objects
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class Exception(ExtractorError):
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def __init__(self, msg, *args, **kwargs):
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expr = kwargs.pop('expr', None)
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if expr is not None:
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msg = '{0} in: {1!r}'.format(msg.rstrip(), expr[:100])
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super(JSInterpreter.Exception, self).__init__(msg, *args, **kwargs)
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def _named_object(self, namespace, obj):
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self.__named_object_counter += 1
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name = '__youtube_dl_jsinterp_obj%s' % (self.__named_object_counter, )
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name = '__youtube_dl_jsinterp_obj%d' % (self.__named_object_counter, )
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namespace[name] = obj
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return name
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@staticmethod
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def _separate(expr, delim=',', max_split=None):
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def _separate(expr, delim=',', max_split=None, skip_delims=None):
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if not expr:
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return
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counters = {k: 0 for k in _MATCHING_PARENS.values()}
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start, splits, pos, delim_len = 0, 0, 0, len(delim) - 1
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start, splits, pos, skipping, delim_len = 0, 0, 0, 0, len(delim) - 1
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in_quote, escaping = None, False
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for idx, char in enumerate(expr):
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if char in _MATCHING_PARENS:
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counters[_MATCHING_PARENS[char]] += 1
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elif char in counters:
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counters[char] -= 1
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if char != delim[pos] or any(counters.values()):
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pos = 0
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if not in_quote:
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if char in _MATCHING_PARENS:
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counters[_MATCHING_PARENS[char]] += 1
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elif char in counters:
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counters[char] -= 1
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if not escaping:
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if char in _QUOTES and in_quote in (char, None):
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in_quote = None if in_quote else char
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else:
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escaping = in_quote and char == '\\'
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else:
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escaping = False
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if char != delim[pos] or any(counters.values()) or in_quote:
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pos = skipping = 0
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continue
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elif pos != delim_len:
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elif skipping > 0:
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skipping -= 1
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continue
|
||||
elif pos == 0 and skip_delims:
|
||||
here = expr[idx:]
|
||||
for s in skip_delims if isinstance(skip_delims, (list, tuple)) else [skip_delims]:
|
||||
if here.startswith(s) and s:
|
||||
skipping = len(s) - 1
|
||||
break
|
||||
if skipping > 0:
|
||||
continue
|
||||
if pos < delim_len:
|
||||
pos += 1
|
||||
continue
|
||||
yield expr[start: idx - delim_len]
|
||||
@ -122,61 +174,108 @@ class JSInterpreter(object):
|
||||
break
|
||||
yield expr[start:]
|
||||
|
||||
@staticmethod
|
||||
def _separate_at_paren(expr, delim):
|
||||
separated = list(JSInterpreter._separate(expr, delim, 1))
|
||||
@classmethod
|
||||
def _separate_at_paren(cls, expr, delim):
|
||||
separated = list(cls._separate(expr, delim, 1))
|
||||
|
||||
if len(separated) < 2:
|
||||
raise ExtractorError('No terminating paren {0} in {1}'.format(delim, expr))
|
||||
raise cls.Exception('No terminating paren {delim} in {expr}'.format(**locals()))
|
||||
return separated[0][1:].strip(), separated[1].strip()
|
||||
|
||||
@staticmethod
|
||||
def _all_operators():
|
||||
return itertools.chain(
|
||||
_SC_OPERATORS, _LOG_OPERATORS, _COMP_OPERATORS, _OPERATORS)
|
||||
|
||||
def _operator(self, op, left_val, right_expr, expr, local_vars, allow_recursion):
|
||||
if op in ('||', '&&'):
|
||||
if (op == '&&') ^ _ternary(left_val):
|
||||
return left_val # short circuiting
|
||||
elif op == '?':
|
||||
right_expr = _ternary(left_val, *self._separate(right_expr, ':', 1))
|
||||
|
||||
right_val = self.interpret_expression(right_expr, local_vars, allow_recursion)
|
||||
opfunc = op and next((v for k, v in self._all_operators() if k == op), None)
|
||||
if not opfunc:
|
||||
return right_val
|
||||
|
||||
try:
|
||||
return opfunc(left_val, right_val)
|
||||
except Exception as e:
|
||||
raise self.Exception('Failed to evaluate {left_val!r} {op} {right_val!r}'.format(**locals()), expr, cause=e)
|
||||
|
||||
def _index(self, obj, idx):
|
||||
if idx == 'length':
|
||||
return len(obj)
|
||||
try:
|
||||
return obj[int(idx)] if isinstance(obj, list) else obj[idx]
|
||||
except Exception as e:
|
||||
raise self.Exception('Cannot get index {idx}'.format(**locals()), expr=repr(obj), cause=e)
|
||||
|
||||
def _dump(self, obj, namespace):
|
||||
try:
|
||||
return json.dumps(obj)
|
||||
except TypeError:
|
||||
return self._named_object(namespace, obj)
|
||||
|
||||
def interpret_statement(self, stmt, local_vars, allow_recursion=100):
|
||||
if allow_recursion < 0:
|
||||
raise ExtractorError('Recursion limit reached')
|
||||
raise self.Exception('Recursion limit reached')
|
||||
allow_recursion -= 1
|
||||
|
||||
sub_statements = list(self._separate(stmt, ';'))
|
||||
stmt = (sub_statements or ['']).pop()
|
||||
should_return = False
|
||||
sub_statements = list(self._separate(stmt, ';')) or ['']
|
||||
expr = stmt = sub_statements.pop().strip()
|
||||
for sub_stmt in sub_statements:
|
||||
ret, should_abort = self.interpret_statement(sub_stmt, local_vars, allow_recursion - 1)
|
||||
if should_abort:
|
||||
return ret
|
||||
ret, should_return = self.interpret_statement(sub_stmt, local_vars, allow_recursion)
|
||||
if should_return:
|
||||
return ret, should_return
|
||||
|
||||
should_abort = False
|
||||
stmt = stmt.lstrip()
|
||||
stmt_m = re.match(r'var\s', stmt)
|
||||
if stmt_m:
|
||||
expr = stmt[len(stmt_m.group(0)):]
|
||||
else:
|
||||
return_m = re.match(r'return(?:\s+|$)', stmt)
|
||||
if return_m:
|
||||
expr = stmt[len(return_m.group(0)):]
|
||||
should_abort = True
|
||||
m = re.match(r'(?P<var>(?:var|const|let)\s)|return(?:\s+|$)', stmt)
|
||||
if m:
|
||||
expr = stmt[len(m.group(0)):].strip()
|
||||
should_return = not m.group('var')
|
||||
if not expr:
|
||||
return None, should_return
|
||||
|
||||
if expr[0] in _QUOTES:
|
||||
inner, outer = self._separate(expr, expr[0], 1)
|
||||
inner = json.loads(js_to_json(inner + expr[0])) # , strict=True))
|
||||
if not outer:
|
||||
return inner, should_return
|
||||
expr = self._named_object(local_vars, inner) + outer
|
||||
|
||||
if expr.startswith('new '):
|
||||
obj = expr[4:]
|
||||
if obj.startswith('Date('):
|
||||
left, right = self._separate_at_paren(obj[4:], ')')
|
||||
left = self.interpret_expression(left, local_vars, allow_recursion)
|
||||
expr = unified_timestamp(left, False)
|
||||
if not expr:
|
||||
raise self.Exception('Failed to parse date {left!r}'.format(**locals()), expr=expr)
|
||||
expr = self._dump(int(expr * 1000), local_vars) + right
|
||||
else:
|
||||
# Try interpreting it as an expression
|
||||
expr = stmt
|
||||
raise self.Exception('Unsupported object {obj}'.format(**locals()), expr=expr)
|
||||
|
||||
v = self.interpret_expression(expr, local_vars, allow_recursion)
|
||||
return v, should_abort
|
||||
|
||||
def interpret_expression(self, expr, local_vars, allow_recursion):
|
||||
expr = expr.strip()
|
||||
if expr == '': # Empty expression
|
||||
return None
|
||||
if expr.startswith('void '):
|
||||
left = self.interpret_expression(expr[5:], local_vars, allow_recursion)
|
||||
return None, should_return
|
||||
|
||||
if expr.startswith('{'):
|
||||
inner, outer = self._separate_at_paren(expr, '}')
|
||||
inner, should_abort = self.interpret_statement(inner, local_vars, allow_recursion - 1)
|
||||
inner, should_abort = self.interpret_statement(inner, local_vars, allow_recursion)
|
||||
if not outer or should_abort:
|
||||
return inner
|
||||
return inner, should_abort or should_return
|
||||
else:
|
||||
expr = json.dumps(inner) + outer
|
||||
expr = self._dump(inner, local_vars) + outer
|
||||
|
||||
if expr.startswith('('):
|
||||
inner, outer = self._separate_at_paren(expr, ')')
|
||||
inner = self.interpret_expression(inner, local_vars, allow_recursion)
|
||||
if not outer:
|
||||
return inner
|
||||
inner, should_abort = self.interpret_statement(inner, local_vars, allow_recursion)
|
||||
if not outer or should_abort:
|
||||
return inner, should_abort or should_return
|
||||
else:
|
||||
expr = json.dumps(inner) + outer
|
||||
expr = self._dump(inner, local_vars) + outer
|
||||
|
||||
if expr.startswith('['):
|
||||
inner, outer = self._separate_at_paren(expr, ']')
|
||||
@ -185,57 +284,53 @@ class JSInterpreter(object):
|
||||
for item in self._separate(inner)])
|
||||
expr = name + outer
|
||||
|
||||
m = re.match(r'try\s*', expr)
|
||||
if m:
|
||||
m = re.match(r'(?P<try>try|finally)\s*|(?:(?P<catch>catch)|(?P<for>for)|(?P<switch>switch))\s*\(', expr)
|
||||
md = m.groupdict() if m else {}
|
||||
if md.get('try'):
|
||||
if expr[m.end()] == '{':
|
||||
try_expr, expr = self._separate_at_paren(expr[m.end():], '}')
|
||||
else:
|
||||
try_expr, expr = expr[m.end() - 1:], ''
|
||||
ret, should_abort = self.interpret_statement(try_expr, local_vars, allow_recursion - 1)
|
||||
ret, should_abort = self.interpret_statement(try_expr, local_vars, allow_recursion)
|
||||
if should_abort:
|
||||
return ret
|
||||
return self.interpret_statement(expr, local_vars, allow_recursion - 1)[0]
|
||||
return ret, True
|
||||
ret, should_abort = self.interpret_statement(expr, local_vars, allow_recursion)
|
||||
return ret, should_abort or should_return
|
||||
|
||||
m = re.match(r'(?:(?P<catch>catch)|(?P<for>for)|(?P<switch>switch))\s*\(', expr)
|
||||
md = m.groupdict() if m else {}
|
||||
if md.get('catch'):
|
||||
elif md.get('catch'):
|
||||
# We ignore the catch block
|
||||
_, expr = self._separate_at_paren(expr, '}')
|
||||
return self.interpret_statement(expr, local_vars, allow_recursion - 1)[0]
|
||||
ret, should_abort = self.interpret_statement(expr, local_vars, allow_recursion)
|
||||
return ret, should_abort or should_return
|
||||
|
||||
elif md.get('for'):
|
||||
def raise_constructor_error(c):
|
||||
raise ExtractorError(
|
||||
'Premature return in the initialization of a for loop in {0!r}'.format(c))
|
||||
|
||||
constructor, remaining = self._separate_at_paren(expr[m.end() - 1:], ')')
|
||||
if remaining.startswith('{'):
|
||||
body, expr = self._separate_at_paren(remaining, '}')
|
||||
else:
|
||||
m = re.match(r'switch\s*\(', remaining) # FIXME
|
||||
if m:
|
||||
switch_val, remaining = self._separate_at_paren(remaining[m.end() - 1:], ')')
|
||||
switch_m = re.match(r'switch\s*\(', remaining) # FIXME
|
||||
if switch_m:
|
||||
switch_val, remaining = self._separate_at_paren(remaining[switch_m.end() - 1:], ')')
|
||||
body, expr = self._separate_at_paren(remaining, '}')
|
||||
body = 'switch(%s){%s}' % (switch_val, body)
|
||||
else:
|
||||
body, expr = remaining, ''
|
||||
start, cndn, increment = self._separate(constructor, ';')
|
||||
if self.interpret_statement(start, local_vars, allow_recursion - 1)[1]:
|
||||
raise_constructor_error(constructor)
|
||||
self.interpret_expression(start, local_vars, allow_recursion)
|
||||
while True:
|
||||
if not self.interpret_expression(cndn, local_vars, allow_recursion):
|
||||
if not _ternary(self.interpret_expression(cndn, local_vars, allow_recursion)):
|
||||
break
|
||||
try:
|
||||
ret, should_abort = self.interpret_statement(body, local_vars, allow_recursion - 1)
|
||||
ret, should_abort = self.interpret_statement(body, local_vars, allow_recursion)
|
||||
if should_abort:
|
||||
return ret
|
||||
return ret, True
|
||||
except JS_Break:
|
||||
break
|
||||
except JS_Continue:
|
||||
pass
|
||||
if self.interpret_statement(increment, local_vars, allow_recursion - 1)[1]:
|
||||
raise_constructor_error(constructor)
|
||||
return self.interpret_statement(expr, local_vars, allow_recursion - 1)[0]
|
||||
self.interpret_expression(increment, local_vars, allow_recursion)
|
||||
ret, should_abort = self.interpret_statement(expr, local_vars, allow_recursion)
|
||||
return ret, should_abort or should_return
|
||||
|
||||
elif md.get('switch'):
|
||||
switch_val, remaining = self._separate_at_paren(expr[m.end() - 1:], ')')
|
||||
@ -245,7 +340,7 @@ class JSInterpreter(object):
|
||||
for default in (False, True):
|
||||
matched = False
|
||||
for item in items:
|
||||
case, stmt = [i.strip() for i in self._separate(item, ':', 1)]
|
||||
case, stmt = (i.strip() for i in self._separate(item, ':', 1))
|
||||
if default:
|
||||
matched = matched or case == 'default'
|
||||
elif not matched:
|
||||
@ -254,24 +349,28 @@ class JSInterpreter(object):
|
||||
if not matched:
|
||||
continue
|
||||
try:
|
||||
ret, should_abort = self.interpret_statement(stmt, local_vars, allow_recursion - 1)
|
||||
ret, should_abort = self.interpret_statement(stmt, local_vars, allow_recursion)
|
||||
if should_abort:
|
||||
return ret
|
||||
except JS_Break:
|
||||
break
|
||||
if matched:
|
||||
break
|
||||
return self.interpret_statement(expr, local_vars, allow_recursion - 1)[0]
|
||||
ret, should_abort = self.interpret_statement(expr, local_vars, allow_recursion)
|
||||
return ret, should_abort or should_return
|
||||
|
||||
# Comma separated statements
|
||||
sub_expressions = list(self._separate(expr))
|
||||
expr = sub_expressions.pop().strip() if sub_expressions else ''
|
||||
for sub_expr in sub_expressions:
|
||||
self.interpret_expression(sub_expr, local_vars, allow_recursion)
|
||||
if len(sub_expressions) > 1:
|
||||
for sub_expr in sub_expressions:
|
||||
ret, should_abort = self.interpret_statement(sub_expr, local_vars, allow_recursion)
|
||||
if should_abort:
|
||||
return ret, True
|
||||
return ret, False
|
||||
|
||||
for m in re.finditer(r'''(?x)
|
||||
(?P<pre_sign>\+\+|--)(?P<var1>%(_NAME_RE)s)|
|
||||
(?P<var2>%(_NAME_RE)s)(?P<post_sign>\+\+|--)''' % globals(), expr):
|
||||
(?P<pre_sign>\+\+|--)(?P<var1>{_NAME_RE})|
|
||||
(?P<var2>{_NAME_RE})(?P<post_sign>\+\+|--)'''.format(**globals()), expr):
|
||||
var = m.group('var1') or m.group('var2')
|
||||
start, end = m.span()
|
||||
sign = m.group('pre_sign') or m.group('post_sign')
|
||||
@ -279,85 +378,87 @@ class JSInterpreter(object):
|
||||
local_vars[var] += 1 if sign[0] == '+' else -1
|
||||
if m.group('pre_sign'):
|
||||
ret = local_vars[var]
|
||||
expr = expr[:start] + json.dumps(ret) + expr[end:]
|
||||
expr = expr[:start] + self._dump(ret, local_vars) + expr[end:]
|
||||
|
||||
for op, opfunc in _ASSIGN_OPERATORS:
|
||||
m = re.match(r'''(?x)
|
||||
(?P<out>%s)(?:\[(?P<index>[^\]]+?)\])?
|
||||
\s*%s
|
||||
(?P<expr>.*)$''' % (_NAME_RE, re.escape(op)), expr)
|
||||
if not m:
|
||||
continue
|
||||
right_val = self.interpret_expression(m.group('expr'), local_vars, allow_recursion)
|
||||
if not expr:
|
||||
return None, should_return
|
||||
|
||||
if m.groupdict().get('index'):
|
||||
lvar = local_vars[m.group('out')]
|
||||
idx = self.interpret_expression(m.group('index'), local_vars, allow_recursion)
|
||||
if not isinstance(idx, int):
|
||||
raise ExtractorError('List indices must be integers: %s' % (idx, ))
|
||||
cur = lvar[idx]
|
||||
val = opfunc(cur, right_val)
|
||||
lvar[idx] = val
|
||||
return val
|
||||
else:
|
||||
cur = local_vars.get(m.group('out'))
|
||||
val = opfunc(cur, right_val)
|
||||
local_vars[m.group('out')] = val
|
||||
return val
|
||||
m = re.match(r'''(?x)
|
||||
(?P<assign>
|
||||
(?P<out>{_NAME_RE})(?:\[(?P<index>[^\]]+?)\])?\s*
|
||||
(?P<op>{_OPERATOR_RE})?
|
||||
=(?P<expr>.*)$
|
||||
)|(?P<return>
|
||||
(?!if|return|true|false|null|undefined)(?P<name>{_NAME_RE})$
|
||||
)|(?P<indexing>
|
||||
(?P<in>{_NAME_RE})\[(?P<idx>.+)\]$
|
||||
)|(?P<attribute>
|
||||
(?P<var>{_NAME_RE})(?:\.(?P<member>[^(]+)|\[(?P<member2>[^\]]+)\])\s*
|
||||
)|(?P<function>
|
||||
(?P<fname>{_NAME_RE})\((?P<args>.*)\)$
|
||||
)'''.format(**globals()), expr)
|
||||
md = m.groupdict() if m else {}
|
||||
if md.get('assign'):
|
||||
left_val = local_vars.get(m.group('out'))
|
||||
|
||||
if expr.isdigit():
|
||||
return int(expr)
|
||||
if not m.group('index'):
|
||||
local_vars[m.group('out')] = self._operator(
|
||||
m.group('op'), left_val, m.group('expr'), expr, local_vars, allow_recursion)
|
||||
return local_vars[m.group('out')], should_return
|
||||
elif left_val is None:
|
||||
raise self.Exception('Cannot index undefined variable ' + m.group('out'), expr=expr)
|
||||
|
||||
if expr == 'break':
|
||||
idx = self.interpret_expression(m.group('index'), local_vars, allow_recursion)
|
||||
if not isinstance(idx, (int, float)):
|
||||
raise self.Exception('List index %s must be integer' % (idx, ), expr=expr)
|
||||
idx = int(idx)
|
||||
left_val[idx] = self._operator(
|
||||
m.group('op'), left_val[idx], m.group('expr'), expr, local_vars, allow_recursion)
|
||||
return left_val[idx], should_return
|
||||
|
||||
elif expr.isdigit():
|
||||
return int(expr), should_return
|
||||
|
||||
elif expr == 'break':
|
||||
raise JS_Break()
|
||||
elif expr == 'continue':
|
||||
raise JS_Continue()
|
||||
|
||||
var_m = re.match(
|
||||
r'(?!if|return|true|false|null)(?P<name>%s)$' % _NAME_RE,
|
||||
expr)
|
||||
if var_m:
|
||||
return local_vars[var_m.group('name')]
|
||||
elif md.get('return'):
|
||||
return local_vars[m.group('name')], should_return
|
||||
|
||||
try:
|
||||
return json.loads(expr)
|
||||
ret = json.loads(js_to_json(expr)) # strict=True)
|
||||
if not md.get('attribute'):
|
||||
return ret, should_return
|
||||
except ValueError:
|
||||
pass
|
||||
|
||||
m = re.match(
|
||||
r'(?P<in>%s)\[(?P<idx>.+)\]$' % _NAME_RE, expr)
|
||||
if m:
|
||||
if md.get('indexing'):
|
||||
val = local_vars[m.group('in')]
|
||||
idx = self.interpret_expression(m.group('idx'), local_vars, allow_recursion)
|
||||
return val[idx]
|
||||
return self._index(val, idx), should_return
|
||||
|
||||
def raise_expr_error(where, op, exp):
|
||||
raise ExtractorError('Premature {0} return of {1} in {2!r}'.format(where, op, exp))
|
||||
|
||||
for op, opfunc in _OPERATORS:
|
||||
separated = list(self._separate(expr, op))
|
||||
for op, _ in self._all_operators():
|
||||
# hackety: </> have higher priority than <</>>, but don't confuse them
|
||||
skip_delim = (op + op) if op in ('<', '>') else None
|
||||
separated = list(self._separate(expr, op, skip_delims=skip_delim))
|
||||
if len(separated) < 2:
|
||||
continue
|
||||
right_val = separated.pop()
|
||||
left_val = op.join(separated)
|
||||
left_val, should_abort = self.interpret_statement(
|
||||
left_val, local_vars, allow_recursion - 1)
|
||||
if should_abort:
|
||||
raise_expr_error('left-side', op, expr)
|
||||
right_val, should_abort = self.interpret_statement(
|
||||
right_val, local_vars, allow_recursion - 1)
|
||||
if should_abort:
|
||||
raise_expr_error('right-side', op, expr)
|
||||
return opfunc(left_val or 0, right_val)
|
||||
|
||||
m = re.match(
|
||||
r'(?P<var>%s)(?:\.(?P<member>[^(]+)|\[(?P<member2>[^]]+)\])\s*' % _NAME_RE,
|
||||
expr)
|
||||
if m:
|
||||
right_expr = separated.pop()
|
||||
while op == '-' and len(separated) > 1 and not separated[-1].strip():
|
||||
right_expr = '-' + right_expr
|
||||
separated.pop()
|
||||
left_val = self.interpret_expression(op.join(separated), local_vars, allow_recursion)
|
||||
return self._operator(op, 0 if left_val is None else left_val,
|
||||
right_expr, expr, local_vars, allow_recursion), should_return
|
||||
|
||||
if md.get('attribute'):
|
||||
variable = m.group('var')
|
||||
nl = Nonlocal()
|
||||
|
||||
nl.member = remove_quotes(m.group('member') or m.group('member2'))
|
||||
member = m.group('member')
|
||||
if not member:
|
||||
member = self.interpret_expression(m.group('member2'), local_vars, allow_recursion)
|
||||
arg_str = expr[m.end():]
|
||||
if arg_str.startswith('('):
|
||||
arg_str, remaining = self._separate_at_paren(arg_str, ')')
|
||||
@ -367,25 +468,24 @@ class JSInterpreter(object):
|
||||
def assertion(cndn, msg):
|
||||
""" assert, but without risk of getting optimized out """
|
||||
if not cndn:
|
||||
raise ExtractorError('{0} {1}: {2}'.format(nl.member, msg, expr))
|
||||
raise ExtractorError('{member} {msg}'.format(**locals()), expr=expr)
|
||||
|
||||
def eval_method():
|
||||
# nonlocal member
|
||||
member = nl.member
|
||||
if variable == 'String':
|
||||
obj = compat_str
|
||||
elif variable in local_vars:
|
||||
obj = local_vars[variable]
|
||||
else:
|
||||
if (variable, member) == ('console', 'debug'):
|
||||
return
|
||||
types = {
|
||||
'String': compat_str,
|
||||
'Math': float,
|
||||
}
|
||||
obj = local_vars.get(variable, types.get(variable, NO_DEFAULT))
|
||||
if obj is NO_DEFAULT:
|
||||
if variable not in self._objects:
|
||||
self._objects[variable] = self.extract_object(variable)
|
||||
obj = self._objects[variable]
|
||||
|
||||
# Member access
|
||||
if arg_str is None:
|
||||
# Member access
|
||||
if member == 'length':
|
||||
return len(obj)
|
||||
return obj[member]
|
||||
return self._index(obj, member)
|
||||
|
||||
# Function call
|
||||
argvals = [
|
||||
@ -396,12 +496,17 @@ class JSInterpreter(object):
|
||||
if member == 'fromCharCode':
|
||||
assertion(argvals, 'takes one or more arguments')
|
||||
return ''.join(map(chr, argvals))
|
||||
raise ExtractorError('Unsupported string method %s' % (member, ))
|
||||
raise self.Exception('Unsupported string method ' + member, expr=expr)
|
||||
elif obj == float:
|
||||
if member == 'pow':
|
||||
assertion(len(argvals) == 2, 'takes two arguments')
|
||||
return argvals[0] ** argvals[1]
|
||||
raise self.Exception('Unsupported Math method ' + member, expr=expr)
|
||||
|
||||
if member == 'split':
|
||||
assertion(argvals, 'takes one or more arguments')
|
||||
assertion(argvals == [''], 'with arguments is not implemented')
|
||||
return list(obj)
|
||||
assertion(len(argvals) == 1, 'with limit argument is not implemented')
|
||||
return obj.split(argvals[0]) if argvals[0] else list(obj)
|
||||
elif member == 'join':
|
||||
assertion(isinstance(obj, list), 'must be applied on a list')
|
||||
assertion(len(argvals) == 1, 'takes exactly one argument')
|
||||
@ -447,7 +552,7 @@ class JSInterpreter(object):
|
||||
assertion(argvals, 'takes one or more arguments')
|
||||
assertion(len(argvals) <= 2, 'takes at-most 2 arguments')
|
||||
f, this = (argvals + [''])[:2]
|
||||
return [f((item, idx, obj), this=this) for idx, item in enumerate(obj)]
|
||||
return [f((item, idx, obj), {'this': this}, allow_recursion) for idx, item in enumerate(obj)]
|
||||
elif member == 'indexOf':
|
||||
assertion(argvals, 'takes one or more arguments')
|
||||
assertion(len(argvals) <= 2, 'takes at-most 2 arguments')
|
||||
@ -457,32 +562,35 @@ class JSInterpreter(object):
|
||||
except ValueError:
|
||||
return -1
|
||||
|
||||
if isinstance(obj, list):
|
||||
member = int(member)
|
||||
nl.member = member
|
||||
return obj[member](argvals)
|
||||
idx = int(member) if isinstance(obj, list) else member
|
||||
return obj[idx](argvals, allow_recursion=allow_recursion)
|
||||
|
||||
if remaining:
|
||||
return self.interpret_expression(
|
||||
ret, should_abort = self.interpret_statement(
|
||||
self._named_object(local_vars, eval_method()) + remaining,
|
||||
local_vars, allow_recursion)
|
||||
return ret, should_return or should_abort
|
||||
else:
|
||||
return eval_method()
|
||||
return eval_method(), should_return
|
||||
|
||||
m = re.match(r'^(?P<func>%s)\((?P<args>[a-zA-Z0-9_$,]*)\)$' % _NAME_RE, expr)
|
||||
if m:
|
||||
fname = m.group('func')
|
||||
argvals = tuple([
|
||||
int(v) if v.isdigit() else local_vars[v]
|
||||
for v in self._separate(m.group('args'))])
|
||||
elif md.get('function'):
|
||||
fname = m.group('fname')
|
||||
argvals = [self.interpret_expression(v, local_vars, allow_recursion)
|
||||
for v in self._separate(m.group('args'))]
|
||||
if fname in local_vars:
|
||||
return local_vars[fname](argvals)
|
||||
return local_vars[fname](argvals, allow_recursion=allow_recursion), should_return
|
||||
elif fname not in self._functions:
|
||||
self._functions[fname] = self.extract_function(fname)
|
||||
return self._functions[fname](argvals)
|
||||
return self._functions[fname](argvals, allow_recursion=allow_recursion), should_return
|
||||
|
||||
if expr:
|
||||
raise ExtractorError('Unsupported JS expression %r' % expr)
|
||||
raise self.Exception(
|
||||
'Unsupported JS expression ' + (expr[:40] if expr != stmt else ''), expr=stmt)
|
||||
|
||||
def interpret_expression(self, expr, local_vars, allow_recursion):
|
||||
ret, should_return = self.interpret_statement(expr, local_vars, allow_recursion)
|
||||
if should_return:
|
||||
raise self.Exception('Cannot return from an expression', expr)
|
||||
return ret
|
||||
|
||||
def extract_object(self, objname):
|
||||
_FUNC_NAME_RE = r'''(?:[a-zA-Z$0-9]+|"[a-zA-Z$0-9]+"|'[a-zA-Z$0-9]+')'''
|
||||
@ -494,15 +602,17 @@ class JSInterpreter(object):
|
||||
}\s*;
|
||||
''' % (re.escape(objname), _FUNC_NAME_RE),
|
||||
self.code)
|
||||
if not obj_m:
|
||||
raise self.Exception('Could not find object ' + objname)
|
||||
fields = obj_m.group('fields')
|
||||
# Currently, it only supports function definitions
|
||||
fields_m = re.finditer(
|
||||
r'''(?x)
|
||||
(?P<key>%s)\s*:\s*function\s*\((?P<args>[a-z,]+)\){(?P<code>[^}]+)}
|
||||
''' % _FUNC_NAME_RE,
|
||||
(?P<key>%s)\s*:\s*function\s*\((?P<args>(?:%s|,)*)\){(?P<code>[^}]+)}
|
||||
''' % (_FUNC_NAME_RE, _NAME_RE),
|
||||
fields)
|
||||
for f in fields_m:
|
||||
argnames = f.group('args').split(',')
|
||||
argnames = self.build_arglist(f.group('args'))
|
||||
obj[remove_quotes(f.group('key'))] = self.build_function(argnames, f.group('code'))
|
||||
|
||||
return obj
|
||||
@ -510,15 +620,19 @@ class JSInterpreter(object):
|
||||
def extract_function_code(self, funcname):
|
||||
""" @returns argnames, code """
|
||||
func_m = re.search(
|
||||
r'''(?x)
|
||||
(?:function\s+%(f_n)s|[{;,]\s*%(f_n)s\s*=\s*function|var\s+%(f_n)s\s*=\s*function)\s*
|
||||
r'''(?xs)
|
||||
(?:
|
||||
function\s+%(name)s|
|
||||
[{;,]\s*%(name)s\s*=\s*function|
|
||||
(?:var|const|let)\s+%(name)s\s*=\s*function
|
||||
)\s*
|
||||
\((?P<args>[^)]*)\)\s*
|
||||
(?P<code>\{(?:(?!};)[^"]|"([^"]|\\")*")+\})''' % {'f_n': re.escape(funcname), },
|
||||
(?P<code>{.+})''' % {'name': re.escape(funcname)},
|
||||
self.code)
|
||||
code, _ = self._separate_at_paren(func_m.group('code'), '}') # refine the match
|
||||
if func_m is None:
|
||||
raise ExtractorError('Could not find JS function %r' % funcname)
|
||||
return func_m.group('args').split(','), code
|
||||
raise self.Exception('Could not find JS function "{funcname}"'.format(**locals()))
|
||||
return self.build_arglist(func_m.group('args')), code
|
||||
|
||||
def extract_function(self, funcname):
|
||||
return self.extract_function_from_code(*self.extract_function_code(funcname))
|
||||
@ -534,7 +648,7 @@ class JSInterpreter(object):
|
||||
name = self._named_object(
|
||||
local_vars,
|
||||
self.extract_function_from_code(
|
||||
[x.strip() for x in mobj.group('args').split(',')],
|
||||
self.build_arglist(mobj.group('args')),
|
||||
body, local_vars, *global_stack))
|
||||
code = code[:start] + name + remaining
|
||||
return self.build_function(argnames, code, local_vars, *global_stack)
|
||||
@ -542,17 +656,22 @@ class JSInterpreter(object):
|
||||
def call_function(self, funcname, *args):
|
||||
return self.extract_function(funcname)(args)
|
||||
|
||||
@classmethod
|
||||
def build_arglist(cls, arg_text):
|
||||
if not arg_text:
|
||||
return []
|
||||
return list(filter(None, (x.strip() or None for x in cls._separate(arg_text))))
|
||||
|
||||
def build_function(self, argnames, code, *global_stack):
|
||||
global_stack = list(global_stack) or [{}]
|
||||
local_vars = global_stack.pop(0)
|
||||
argnames = tuple(argnames)
|
||||
|
||||
def resf(args, **kwargs):
|
||||
local_vars.update(dict(zip(argnames, args)))
|
||||
local_vars.update(kwargs)
|
||||
var_stack = LocalNameSpace(local_vars, *global_stack)
|
||||
for stmt in self._separate(code.replace('\n', ''), ';'):
|
||||
ret, should_abort = self.interpret_statement(stmt, var_stack)
|
||||
if should_abort:
|
||||
break
|
||||
return ret
|
||||
def resf(args, kwargs={}, allow_recursion=100):
|
||||
global_stack[0].update(
|
||||
zip_longest(argnames, args, fillvalue=None))
|
||||
global_stack[0].update(kwargs)
|
||||
var_stack = LocalNameSpace(*global_stack)
|
||||
ret, should_abort = self.interpret_statement(code.replace('\n', ''), var_stack, allow_recursion - 1)
|
||||
if should_abort:
|
||||
return ret
|
||||
return resf
|
||||
|
||||
@ -1696,6 +1696,17 @@ MONTH_NAMES = {
|
||||
'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'],
|
||||
}
|
||||
|
||||
# Timezone names for RFC2822 obs-zone
|
||||
# From https://github.com/python/cpython/blob/3.11/Lib/email/_parseaddr.py#L36-L42
|
||||
TIMEZONE_NAMES = {
|
||||
'UT': 0, 'UTC': 0, 'GMT': 0, 'Z': 0,
|
||||
'AST': -4, 'ADT': -3, # Atlantic (used in Canada)
|
||||
'EST': -5, 'EDT': -4, # Eastern
|
||||
'CST': -6, 'CDT': -5, # Central
|
||||
'MST': -7, 'MDT': -6, # Mountain
|
||||
'PST': -8, 'PDT': -7 # Pacific
|
||||
}
|
||||
|
||||
KNOWN_EXTENSIONS = (
|
||||
'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v', 'aac',
|
||||
'flv', 'f4v', 'f4a', 'f4b',
|
||||
@ -1735,12 +1746,17 @@ DATE_FORMATS = (
|
||||
'%b %dth %Y %I:%M',
|
||||
'%Y %m %d',
|
||||
'%Y-%m-%d',
|
||||
'%Y.%m.%d.',
|
||||
'%Y/%m/%d',
|
||||
'%Y/%m/%d %H:%M',
|
||||
'%Y/%m/%d %H:%M:%S',
|
||||
'%Y%m%d%H%M',
|
||||
'%Y%m%d%H%M%S',
|
||||
'%Y%m%d',
|
||||
'%Y-%m-%d %H:%M',
|
||||
'%Y-%m-%d %H:%M:%S',
|
||||
'%Y-%m-%d %H:%M:%S.%f',
|
||||
'%Y-%m-%d %H:%M:%S:%f',
|
||||
'%d.%m.%Y %H:%M',
|
||||
'%d.%m.%Y %H.%M',
|
||||
'%Y-%m-%dT%H:%M:%SZ',
|
||||
@ -1753,6 +1769,7 @@ DATE_FORMATS = (
|
||||
'%b %d %Y at %H:%M:%S',
|
||||
'%B %d %Y at %H:%M',
|
||||
'%B %d %Y at %H:%M:%S',
|
||||
'%H:%M %d-%b-%Y',
|
||||
)
|
||||
|
||||
DATE_FORMATS_DAY_FIRST = list(DATE_FORMATS)
|
||||
@ -1763,6 +1780,7 @@ DATE_FORMATS_DAY_FIRST.extend([
|
||||
'%d/%m/%Y',
|
||||
'%d/%m/%y',
|
||||
'%d/%m/%Y %H:%M:%S',
|
||||
'%d-%m-%Y %H:%M',
|
||||
])
|
||||
|
||||
DATE_FORMATS_MONTH_FIRST = list(DATE_FORMATS)
|
||||
@ -2966,10 +2984,22 @@ class YoutubeDLRedirectHandler(compat_urllib_request.HTTPRedirectHandler):
|
||||
|
||||
def extract_timezone(date_str):
|
||||
m = re.search(
|
||||
r'^.{8,}?(?P<tz>Z$| ?(?P<sign>\+|-)(?P<hours>[0-9]{2}):?(?P<minutes>[0-9]{2})$)',
|
||||
date_str)
|
||||
r'''(?x)
|
||||
^.{8,}? # >=8 char non-TZ prefix, if present
|
||||
(?P<tz>Z| # just the UTC Z, or
|
||||
(?:(?<=.\b\d{4}|\b\d{2}:\d\d)| # preceded by 4 digits or hh:mm or
|
||||
(?<!.\b[a-zA-Z]{3}|[a-zA-Z]{4}|..\b\d\d)) # not preceded by 3 alpha word or >= 4 alpha or 2 digits
|
||||
[ ]? # optional space
|
||||
(?P<sign>\+|-) # +/-
|
||||
(?P<hours>[0-9]{2}):?(?P<minutes>[0-9]{2}) # hh[:]mm
|
||||
$)
|
||||
''', date_str)
|
||||
if not m:
|
||||
timezone = datetime.timedelta()
|
||||
m = re.search(r'\d{1,2}:\d{1,2}(?:\.\d+)?(?P<tz>\s*[A-Z]+)$', date_str)
|
||||
timezone = TIMEZONE_NAMES.get(m and m.group('tz').strip())
|
||||
if timezone is not None:
|
||||
date_str = date_str[:-len(m.group('tz'))]
|
||||
timezone = datetime.timedelta(hours=timezone or 0)
|
||||
else:
|
||||
date_str = date_str[:-len(m.group('tz'))]
|
||||
if not m.group('sign'):
|
||||
@ -3037,7 +3067,8 @@ def unified_timestamp(date_str, day_first=True):
|
||||
if date_str is None:
|
||||
return None
|
||||
|
||||
date_str = re.sub(r'[,|]', '', date_str)
|
||||
date_str = re.sub(r'\s+', ' ', re.sub(
|
||||
r'(?i)[,|]|(mon|tues?|wed(nes)?|thu(rs)?|fri|sat(ur)?)(day)?', '', date_str))
|
||||
|
||||
pm_delta = 12 if re.search(r'(?i)PM', date_str) else 0
|
||||
timezone, date_str = extract_timezone(date_str)
|
||||
@ -3063,7 +3094,7 @@ def unified_timestamp(date_str, day_first=True):
|
||||
pass
|
||||
timetuple = email.utils.parsedate_tz(date_str)
|
||||
if timetuple:
|
||||
return calendar.timegm(timetuple) + pm_delta * 3600
|
||||
return calendar.timegm(timetuple) + pm_delta * 3600 - timezone.total_seconds()
|
||||
|
||||
|
||||
def determine_ext(url, default_ext='unknown_video'):
|
||||
@ -3673,13 +3704,11 @@ def int_or_none(v, scale=1, default=None, get_attr=None, invscale=1):
|
||||
if get_attr:
|
||||
if v is not None:
|
||||
v = getattr(v, get_attr, None)
|
||||
if v == '':
|
||||
v = None
|
||||
if v is None:
|
||||
if v in (None, ''):
|
||||
return default
|
||||
try:
|
||||
return int(v) * invscale // scale
|
||||
except (ValueError, TypeError):
|
||||
except (ValueError, TypeError, OverflowError):
|
||||
return default
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user