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# -*- coding: utf-8 -*-
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# Copyright (c) 2024 tecnovert
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# Distributed under the MIT software license, see the accompanying
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# file LICENSE or http://www.opensource.org/licenses/mit-license.php.
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def decode_varint(b: bytes, offset: int = 0) -> (int, int):
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i: int = 0
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num_bytes: int = 0
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while True:
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c = b[offset + num_bytes]
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i += (c & 0x7F) << (num_bytes * 7)
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num_bytes += 1
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if not c & 0x80:
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break
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if num_bytes > 8:
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raise ValueError('Too many bytes')
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return i, num_bytes
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def encode_varint(i: int) -> bytes:
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b = bytearray()
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while i > 0x7F:
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b += bytes(((i & 0x7F) | 0x80,))
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i = (i >> 7)
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b += bytes((i,))
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return b
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