File size: 800 Bytes
7c99225 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | from ._buffer import Buffer, BufferReadError, BufferWriteError # noqa
UINT_VAR_MAX = 0x3FFFFFFFFFFFFFFF
UINT_VAR_MAX_SIZE = 8
def encode_uint_var(value: int) -> bytes:
"""
Encode a variable-length unsigned integer.
"""
buf = Buffer(capacity=UINT_VAR_MAX_SIZE)
buf.push_uint_var(value)
return buf.data
def size_uint_var(value: int) -> int:
"""
Return the number of bytes required to encode the given value
as a QUIC variable-length unsigned integer.
"""
if value <= 0x3F:
return 1
elif value <= 0x3FFF:
return 2
elif value <= 0x3FFFFFFF:
return 4
elif value <= 0x3FFFFFFFFFFFFFFF:
return 8
else:
raise ValueError("Integer is too big for a variable-length integer")
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