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//
// G4strstreambuf inline methods implementation
//
// Authors: H.Yoshida, M.Nagamatu - November 1998
// Revisions: G.Cosmo, 1998-2013
// --------------------------------------------------------------------

// --------------------------------------------------------------------
inline G4strstreambuf::G4strstreambuf()
  : std::basic_streambuf<char>()
{
  size   = 4095;
  buffer = new char[size + 1];
}

// --------------------------------------------------------------------
inline G4strstreambuf::~G4strstreambuf()
{
  // flushing buffer...
  // std::cout is used because destination object may not be alive.
  if(count != 0)
  {
    buffer[count] = '\0';
    std::cout << buffer;
  }

  delete[] buffer;
}

// --------------------------------------------------------------------
inline G4strstreambuf::G4strstreambuf(const G4strstreambuf& right)
  : std::basic_streambuf<char>()
  , buffer(right.buffer)
  , count(right.count)
  , size(right.size)
  , destination(right.destination)
{}

// --------------------------------------------------------------------
inline G4strstreambuf& G4strstreambuf::operator=(const G4strstreambuf& right)
{
  if(&right == this)
    return *this;

  destination = right.destination;
  buffer      = right.buffer;
  count       = right.count;
  size        = right.size;

  return *this;
}

// --------------------------------------------------------------------
inline G4int G4strstreambuf::overflow(G4int c)
{
  G4int result = 0;
  if(count >= size)
    result = sync();

  buffer[count] = c;
  count++;

  return result;
}

// --------------------------------------------------------------------
inline G4int G4strstreambuf::sync()
{
  buffer[count] = '\0';
  count         = 0;
  return ReceiveString();
}

#ifdef WIN32
// --------------------------------------------------------------------
inline G4int G4strstreambuf::underflow() { return 0; }
#endif

// --------------------------------------------------------------------
inline void G4strstreambuf::SetDestination(G4coutDestination* dest)
{
  destination = dest;
}

inline G4coutDestination* G4strstreambuf::GetDestination() const
{
  return destination;
}

// --------------------------------------------------------------------
inline G4int G4strstreambuf::ReceiveString()
{
  G4String stringToSend(buffer);
  G4int result = 0;

  if(this == &G4coutbuf && destination != nullptr)
  {
    result = destination->ReceiveG4cout_(stringToSend);
  }
  else if(this == &G4cerrbuf && destination != nullptr)
  {
    result = destination->ReceiveG4cerr_(stringToSend);
  }
  else if(this == &G4coutbuf && destination == nullptr)
  {
    std::cout << stringToSend << std::flush;
    result = 0;
  }
  else if(this == &G4cerrbuf && destination == nullptr)
  {
    std::cerr << stringToSend << std::flush;
    result = 0;
  }

  return result;
}