private TransactionOutput ReadTransactionOutput(LoggedBinaryReader binaryReader)
{
var amount = binaryReader.ReadBytes(OutputAmountLength);
var scriptPubKey = _hexReader.ReadVarString(binaryReader);
return(new TransactionOutput(amount, scriptPubKey));
}
private TransactionInput ReadTransactionInput(LoggedBinaryReader binaryReader)
{
var transactionHash = binaryReader.ReadBytes(InputTransactionHashLength);
var outputIndex = binaryReader.ReadUInt32();
var scriptSig = _hexReader.ReadVarString(binaryReader);
var sequence = binaryReader.ReadUInt32();
return(new TransactionInput(transactionHash, outputIndex, scriptSig, sequence));
}
public Transaction ReadTransaction(LoggedBinaryReader binaryReader)
{
var version = binaryReader.ReadUInt32();
var countTransactionInputs = _hexReader.ReadVarInt(binaryReader, Endian.Little, out _);
var hasWitness = countTransactionInputs == 0;
if (hasWitness)
{
// todo: use SegWit
var __ = binaryReader.ReadByte();
countTransactionInputs = _hexReader.ReadVarInt(binaryReader, Endian.Little, out _);
}
// todo: use transaction input pool here
var transactionInputs = new TransactionInput[countTransactionInputs];
for (var i = 0; i < countTransactionInputs; i++)
{
transactionInputs[i] = ReadTransactionInput(binaryReader);
}
var countTransactionOutputs = _hexReader.ReadVarInt(binaryReader, Endian.Little, out _);
// todo: use transaction output pool here
var transactionOutputs = new TransactionOutput[countTransactionOutputs];
for (var i = 0; i < countTransactionOutputs; i++)
{
transactionOutputs[i] = ReadTransactionOutput(binaryReader);
}
var witnessAsciiStrings = new List <AsciiString>();
if (hasWitness)
{
for (var i = 0; i < countTransactionInputs; i++)
{
var countWitnessStackItems = _hexReader.ReadVarInt(binaryReader, Endian.Little, out _);
for (var j = 0; j < countWitnessStackItems; j++)
{
witnessAsciiStrings.Add(_hexReader.ReadVarString(binaryReader));
}
}
}
var lockTime = binaryReader.ReadUInt32();
var txId = GetTrxId(binaryReader.AsSpan());
return(new Transaction(txId, version, transactionInputs, transactionOutputs, lockTime, hasWitness, witnessAsciiStrings));
}
public Block ReadBlock(LoggedBinaryReader binaryReader)
{
var blockHeader = binaryReader.ReadBytes(80);
var nbTransactions = _hexReader.ReadVarInt(binaryReader, Endian.Little, out var sizeOfNbTransactions);
// todo: use transactions pool here.
var transactions = new Transaction[nbTransactions];
for (var i = 0; i < nbTransactions; i++)
{
binaryReader.Reset();
transactions[i] = ReadTransaction(binaryReader);
}
return(new Block(blockHeader, sizeOfNbTransactions, transactions));
}
