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metacontract-script-decoder's Introduction

metacontract-script-decoder

Locking script decoder for Mvc Contract

解码锁定脚本，获得Mvc相关的字段数据。目前支持识别4种脚本类型（CodeType）：

  1. NONE 普通脚本
  2. FT mvc FT合约脚本
  3. UNIQUE mvc unique合约脚本
  4. NFT mvc NFT合约脚本

使用方法

参见测试用例 decode_test.go

将对应的锁定脚本放置在test.txt 中，然后调用decode_test。打印解析出来的合约来测试解码结果

	import (
		scriptDecoder "github.com/metasv/metacontract-script-decoder"
	)

	d.ScriptType = scriptDecoder.GetLockingScriptType(d.Script)
	txo := scriptDecoder.ExtractPkScriptForTxo(d.Script, d.ScriptType)

	d.CodeType = txo.CodeType
	d.CodeHash = txo.CodeHash
	d.GenesisId = txo.GenesisId
	...

metacontract-script-decoder's People

Contributors

jiedo avatar kakeimei avatar

Forkers

strongkill mvc-labs

metacontract-script-decoder's Issues

mvcUnique support pushdata length more than 2**8

code in this block has restrict the data length < 2**8
https://github.com/mvc-labs/metacontract-script-decoder/blob/master/mvc_unique.go#L27

if !(pkScript[scriptLen-totalDataLen-1-1-1] == OP_RETURN &&
		pkScript[scriptLen-totalDataLen-1-1] == 0x4c &&
		pkScript[scriptLen-totalDataLen-1] == byte(totalDataLen)) {
		return false
	}

0x4c is op_pushdata1, there has 0x1-0x4b(data length: 1 ~ 0x4b), op_pushdata2(data length: 2**8 ~ 2**16), op_pushdata4(data length: 2**16~ 2**32)

fixed 256 bytes may be too small for some unique contracts

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