text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2016 The Bitcoin Core developers
  // Copyright (c) 2017 The Whiff Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "primitives/transaction.h"
  
  #include "hash.h"
  #include "tinyformat.h"
  #include "utilstrencodings.h"
  
  std::string COutPoint::ToString() const
  {
      return strprintf("COutPoint(%s, %u)", hash.ToString().substr(0,10), n);
  }
  
  CTxIn::CTxIn(COutPoint prevoutIn, CScript scriptSigIn, uint32_t nSequenceIn)
  {
      prevout = prevoutIn;
      scriptSig = scriptSigIn;
      nSequence = nSequenceIn;
  }
  
  CTxIn::CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn, uint32_t nSequenceIn)
  {
      prevout = COutPoint(hashPrevTx, nOut);
      scriptSig = scriptSigIn;
      nSequence = nSequenceIn;
  }
  
  std::string CTxIn::ToString() const
  {
      std::string str;
      str += "CTxIn(";
      str += prevout.ToString();
      if (prevout.IsNull())
          str += strprintf(", coinbase %s", HexStr(scriptSig));
      else
          str += strprintf(", scriptSig=%s", HexStr(scriptSig).substr(0, 24));
      if (nSequence != SEQUENCE_FINAL)
          str += strprintf(", nSequence=%u", nSequence);
      str += ")";
      return str;
  }
  
  CTxOut::CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn)
  {
      nValue = nValueIn;
      scriptPubKey = scriptPubKeyIn;
  }
  
  std::string CTxOut::ToString() const
  {
      return strprintf("CTxOut(nValue=%d.%08d, scriptPubKey=%s)", nValue / COIN, nValue % COIN, HexStr(scriptPubKey).substr(0, 30));
  }
  
  CMutableTransaction::CMutableTransaction() : nVersion(CTransaction::CURRENT_VERSION), nLockTime(0) {}
  CMutableTransaction::CMutableTransaction(const CTransaction& tx) : vin(tx.vin), vout(tx.vout), nVersion(tx.nVersion), nLockTime(tx.nLockTime) {}
  
  uint256 CMutableTransaction::GetHash() const
  {
      return SerializeHash(*this, SER_GETHASH, SERIALIZE_TRANSACTION_NO_WITNESS);
  }
  
  uint256 CTransaction::ComputeHash() const
  {
      return SerializeHash(*this, SER_GETHASH, SERIALIZE_TRANSACTION_NO_WITNESS);
  }
  
  uint256 CTransaction::GetWitnessHash() const
  {
      if (!HasWitness()) {
          return GetHash();
      }
      return SerializeHash(*this, SER_GETHASH, 0);
  }
  
  /* For backward compatibility, the hash is initialized to 0. TODO: remove the need for this default constructor entirely. */
  CTransaction::CTransaction() : vin(), vout(), nVersion(CTransaction::CURRENT_VERSION), nLockTime(0), hash() {}
  CTransaction::CTransaction(const CMutableTransaction &tx) : vin(tx.vin), vout(tx.vout), nVersion(tx.nVersion), nLockTime(tx.nLockTime), hash(ComputeHash()) {}
  CTransaction::CTransaction(CMutableTransaction &&tx) : vin(std::move(tx.vin)), vout(std::move(tx.vout)), nVersion(tx.nVersion), nLockTime(tx.nLockTime), hash(ComputeHash()) {}
  
  CAmount CTransaction::GetValueOut() const
  {
      CAmount nValueOut = 0;
      for (const auto& tx_out : vout) {
          nValueOut += tx_out.nValue;
          if (!MoneyRange(tx_out.nValue) || !MoneyRange(nValueOut))
              throw std::runtime_error(std::string(__func__) + ": value out of range");
      }
      return nValueOut;
  }
  
  unsigned int CTransaction::GetTotalSize() const
  {
      return ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION);
  }
  
  std::string CTransaction::ToString() const
  {
      std::string str;
      str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%u, vout.size=%u, nLockTime=%u)\n",
          GetHash().ToString().substr(0,10),
          nVersion,
          vin.size(),
          vout.size(),
          nLockTime);
      for (const auto& tx_in : vin)
          str += "    " + tx_in.ToString() + "\n";
      for (const auto& tx_in : vin)
          str += "    " + tx_in.scriptWitness.ToString() + "\n";
      for (const auto& tx_out : vout)
          str += "    " + tx_out.ToString() + "\n";
      return str;
  }
  