def from_raw(txoutputraw,cursor=0,has_segwit=False):
"""
Imports a TxOutput from a Transaction's hexadecimal data
Attributes
----------
txinputraw : string (hex)
The hexadecimal raw string of the Transaction
cursor : int
The cursor of which the algorithm will start to read the data
has_segwit : boolean
Is the Tx Output segwit or not
"""
txoutputraw = to_bytes(txoutputraw)
# read the amount of the TxOutput
value = int.from_bytes(txoutputraw[cursor:cursor + 8][::-1], 'big')
cursor += 8
# read the size (bytes length) of the integer representing the size of the locking
# Script's raw data and the size of the locking Script's raw data
lock_script_size, size = vi_to_int(txoutputraw[cursor:cursor + 9])
cursor += size
lock_script = txoutputraw[cursor:cursor + lock_script_size]
cursor += lock_script_size
return TxOutput(amount=value,
script_pubkey=Script.from_raw(lock_script, has_segwit=has_segwit)),cursor
def from_raw(txinputraw, cursor=0, has_segwit=False):
"""
Imports a TxInput from a Transaction's hexadecimal data
Attributes
----------
txinputraw : string (hex)
The hexadecimal raw string of the Transaction
cursor : int
The cursor of which the algorithm will start to read the data
has_segwit : boolean
Is the Tx Input segwit or not
"""
txinputraw = to_bytes(txinputraw)
# read the 32 bytes of TxInput ID
inp_hash = txinputraw[cursor:cursor + 32][::-1]
if not len(inp_hash):
raise Exception("Input transaction hash not found. Probably malformed raw transaction")
output_n = txinputraw[cursor + 32:cursor + 36][::-1]
cursor += 36
# read the size (bytes length) of the integer representing the size of the Script's raw
# data and the size of the Script's raw data
unlocking_script_size, size = vi_to_int(txinputraw[cursor:cursor + 9])
cursor += size
unlocking_script = txinputraw[cursor:cursor + unlocking_script_size]
cursor += unlocking_script_size
sequence_number = txinputraw[cursor:cursor + 4]
cursor += 4
return TxInput(txid = inp_hash.hex(),
txout_index=int(output_n.hex(), 16),
script_sig=Script.from_raw(unlocking_script,has_segwit=has_segwit), sequence=sequence_number),cursor
