mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-11-07 09:20:36 +00:00
77 lines
2.9 KiB
Python
77 lines
2.9 KiB
Python
#!/usr/bin/env python
|
|
|
|
# Generate youtube signature algorithm from test cases
|
|
|
|
import sys
|
|
|
|
tests = [
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[]}|:;?/>.<",
|
|
"J:|}][{=+-_)(*&;%$#@>MNBVCXZASDFGH^KLPOIUYTREWQ0987654321mnbvcxzasdfghrklpoiuytej"),
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$^&*()_-+={[]}|:;?/>.<",
|
|
"!?;:|}][{=+-_)(*&^$#@/MNBVCXZASqFGHJKLPOIUYTREWQ0987654321mnbvcxzasdfghjklpoiuytr"),
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|};?/>.<",
|
|
"ertyuioplkjhgfdqazxcvbnm1234567890QWERT}UIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|/;?Y"),
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[};?/>.<",
|
|
"{>/?;}[.=+-_)(*&^%$#@!MqBVCXZASDFwHJKLPOIUYTREWQ0987654321mnbvcxzasdfghjklpoiuytr"),
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[};?>.<",
|
|
"<.>?;}[{=+-_)(*&^%$#@!MNBVCXZASDFGHJKLPOIUYTREWe098765432rmnbvcxzasdfghjklpoiuyt1"),
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!#$%^&*()_+={[};?/>.<",
|
|
"D.>/?;}[{=+_)(*&^%$#!MNBVCXeAS<FGHJKLPOIUYTREWZ0987654321mnbvcxzasdfghjklpoiuytrQ"),
|
|
("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&*(-+={[};?/>.<",
|
|
"Q>/?;}[{=+-(*<^%$#@!MNBVCXZASDFGHKLPOIUY8REWT0q&7654321mnbvcxzasdfghjklpoiuytrew9"),
|
|
]
|
|
|
|
def find_matching(wrong, right):
|
|
idxs = [wrong.index(c) for c in right]
|
|
return compress(idxs)
|
|
return ('s[%d]' % i for i in idxs)
|
|
|
|
def compress(idxs):
|
|
def _genslice(start, end, step):
|
|
starts = '' if start == 0 else str(start)
|
|
ends = ':%d' % (end+step)
|
|
steps = '' if step == 1 else (':%d' % step)
|
|
return 's[%s%s%s]' % (starts, ends, steps)
|
|
|
|
step = None
|
|
for i, prev in zip(idxs[1:], idxs[:-1]):
|
|
if step is not None:
|
|
if i - prev == step:
|
|
continue
|
|
yield _genslice(start, prev, step)
|
|
step = None
|
|
continue
|
|
if i - prev in [-1, 1]:
|
|
step = i - prev
|
|
start = prev
|
|
continue
|
|
else:
|
|
yield 's[%d]' % prev
|
|
if step is None:
|
|
yield 's[%d]' % i
|
|
else:
|
|
yield _genslice(start, i, step)
|
|
|
|
def _assert_compress(inp, exp):
|
|
res = list(compress(inp))
|
|
if res != exp:
|
|
print('Got %r, expected %r' % (res, exp))
|
|
assert res == exp
|
|
_assert_compress([0,2,4,6], ['s[0]', 's[2]', 's[4]', 's[6]'])
|
|
_assert_compress([0,1,2,4,6,7], ['s[:3]', 's[4]', 's[6:8]'])
|
|
_assert_compress([8,0,1,2,4,7,6,9], ['s[8]', 's[:3]', 's[4]', 's[7:5:-1]', 's[9]'])
|
|
|
|
def gen(wrong, right, indent):
|
|
code = ' + '.join(find_matching(wrong, right))
|
|
return 'if len(s) == %d:\n%s return %s\n' % (len(wrong), indent, code)
|
|
|
|
def genall(tests):
|
|
indent = ' ' * 8
|
|
return indent + (indent + 'el').join(gen(wrong, right, indent) for wrong,right in tests)
|
|
|
|
def main():
|
|
print(genall(tests))
|
|
|
|
if __name__ == '__main__':
|
|
main()
|