mirror of
https://git.ugnet.gay/CrossTalk/azul.git
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Athena Funderburg
30 lines
883 B
Python
30 lines
883 B
Python
Y64 = b'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._'
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def Y64Encode(string_encode: bytes) -> bytes:
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limit = len(string_encode) - (len(string_encode) % 3)
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out = bytearray()
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buff = [0] * len(string_encode)
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for i in range(len(string_encode)):
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buff[i] = string_encode[i] & 0xff
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for i in range(0, limit, 3):
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out.extend([Y64[buff[i] >> 2],
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Y64[((buff[i] << 4) & 0x30) | (buff[i + 1] >> 4)],
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Y64[((buff[i + 1] << 2) & 0x3c) | (buff[i + 2] >> 6)],
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Y64[buff[i + 2] & 0x3f]])
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remaining = len(string_encode) - limit
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if remaining == 1:
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out.extend([Y64[buff[limit] >> 2],
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Y64[(buff[limit] << 4) & 0x30],
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ord('-'),
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ord('-')])
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elif remaining == 2:
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out.extend([Y64[buff[limit] >> 2],
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Y64[((buff[limit] << 4) & 0x30) | (buff[limit + 1] >> 4)],
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Y64[(buff[limit + 1] << 2) & 0x3c],
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ord('-')])
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return bytes(out)
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