Function ScriptToAsmStr

src/core_write.cpp:123–166

* Create the assembly string representation of a CScript object. * @param[in] script CScript object to convert into the asm string representation. * @param[in] fAttemptSighashDecode Whether to attempt to decode sighash types on data within the script that matches the format * of a signature. Only pass true for scripts you believe could contain signature

 *                                     pass false, or omit the this argument (defaults to false), for scriptPubKeys.
 */
std::string ScriptToAsmStr(const CScript& script, const bool fAttemptSighashDecode)
{
    std::string str;
    opcodetype opcode;
    std::vector<unsigned char> vch;
    CScript::const_iterator pc = script.begin();
    while (pc < script.end()) {
        if (!str.empty()) {
            str += " ";
        }
        if (!script.GetOp(pc, opcode, vch)) {
            str += "[error]";
            return str;
        }
        if (0 <= opcode && opcode <= OP_PUSHDATA4) {
            if (vch.size() <= static_cast<std::vector<unsigned char>::size_type>(4)) {
                str += strprintf("%d", CScriptNum(vch, false).getint());
            } else {
                // the IsUnspendable check makes sure not to try to decode OP_RETURN data that may match the format of a signature
                if (fAttemptSighashDecode && !script.IsUnspendable()) {
                    std::string strSigHashDecode;
                    // goal: only attempt to decode a defined sighash type from data that looks like a signature within a scriptSig.
                    // this won't decode correctly formatted public keys in Pubkey or Multisig scripts due to
                    // the restrictions on the pubkey formats (see IsCompressedOrUncompressedPubKey) being incongruous with the
                    // checks in CheckSignatureEncoding.
                    if (CheckSignatureEncoding(vch, SCRIPT_VERIFY_STRICTENC, nullptr)) {
                        const unsigned char chSigHashType = vch.back();
                        const auto it = mapSigHashTypes.find(chSigHashType);
                        if (it != mapSigHashTypes.end()) {
                            strSigHashDecode = "[" + it->second + "]";
                            vch.pop_back(); // remove the sighash type byte. it will be replaced by the decode.
                        }
                    }
                    str += HexStr(vch) + strSigHashDecode;
                } else {
                    str += HexStr(vch);
                }
            }
        } else {
            str += GetOpName(opcode);
        }
    }
    return str;
}

std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags)
{