struct serialization/deserialization with typing
Project description
typestruct
This is a Python 3 library amis to make the standard module struct
easier to use.
Example
@dataclass
class ICMPPacket(Packet):
ttype: uint8
code: uint8
checksum: uint16
rest: Slice(4)
packet = ICMPPacket(1, 2, 3, b"abcd")
binary = packet.serialize()
print(binary) # => b'\x01\x02\x03\x00abcd'
recovered = ICMPPacket.deserialize(binary)
print(recovered) # => ICMPPacket(ttype=1, code=2, checksum=3, rest=b'abcd')
print(packet.serialize(endian=Endian.BIG_ENDIAN)) # => b'\x01\x02\x00\x03abcd'
Variable length
@dataclass
class TLV(Packet):
tag: uint8
length: uint8
value: Varlength(lambda s: s.length)
tlv = TLV(tag=1, length=5, value=b"abcde")
binary = tlv.serialize()
print(binary) # => b'\x01\x05abcde'
recovered = TLV.deserialize(binary)
print(recovered) # => TLV(tag=1, length=5, value=b'abcde')
License
MIT
Project details
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