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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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OP_0 = 0x00
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OP_DATA_1 = 0x01
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OP_1NEGATE = 0x4f
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OP_1 = 0x51
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OP_EQUAL = 0x87
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OP_PUSHDATA1 = 0x4c
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OP_PUSHDATA2 = 0x4d
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OP_PUSHDATA4 = 0x4e
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OP_DUP = 0x76
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OP_EQUALVERIFY = 0x88
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OP_HASH160 = 0xa9
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OP_CHECKSIG = 0xac
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OP_CHECKSEQUENCEVERIFY = 0xb2
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def push_script_data(data_array: bytearray, data: bytes) -> None:
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len_data: int = len(data)
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if len_data == 0 or (len_data == 1 and data[0] == 0):
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data_array += bytes((OP_0,))
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return
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if len_data == 1 and data[0] <= 16:
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data_array += bytes((OP_1 - 1 + data[0],))
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return
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if len_data == 1 and data[0] == 0x81:
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data_array += bytes((OP_1NEGATE,))
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return
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if len_data < OP_PUSHDATA1:
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data_array += len_data.to_bytes(1)
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elif len_data <= 0xff:
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data_array += bytes((OP_PUSHDATA1, len_data))
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elif len_data <= 0xffff:
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data_array += bytes((OP_PUSHDATA2,)) + len_data.to_bytes(2, 'little')
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else:
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data_array += bytes((OP_PUSHDATA4,)) + len_data.to_bytes(4, 'little')
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data_array += data
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