//
// ********************************************************************
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//
// $Id: G4strstreambuf.icc,v 1.13 2006/06/29 19:03:49 gunter Exp $
// GEANT4 tag $Name: geant4-09-02-ref-02 $
// ====================================================================
//   G4strstreambuf.icc
//
// ====================================================================

///////////////////////////////////////
inline G4strstreambuf::G4strstreambuf()
  : std::basic_streambuf<char>(),
    count(0), destination(0)
///////////////////////////////////////
{
  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) 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 G4int G4strstreambuf::ReceiveString ()
/////////////////////////////////////////////
{
  G4String stringToSend(buffer);
  G4int result= 0;

  if(this == &G4coutbuf && destination != 0) {
    result=  destination-> ReceiveG4cout(stringToSend);

  } else if(this == &G4cerrbuf && destination != 0) {
    result=  destination-> ReceiveG4cerr(stringToSend);

  } else if(this == &G4coutbuf && destination == 0) {
    std::cout << stringToSend << std::flush;
    result= 0;

  } else if(this == &G4cerrbuf && destination == 0) {
    std::cerr << stringToSend << std::flush;
    result= 0;
  }

  return result;
}