| 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") | |