//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
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// ********************************************************************
//
//
// $Id: G4strstreambuf.hh 67970 2013-03-13 10:10:06Z gcosmo $
// ====================================================================
//
//   G4strstreambuf
//
// ====================================================================
#ifndef G4_STR_STREAM_BUF_HH
#define G4_STR_STREAM_BUF_HH

#include "globals.hh"
#include "G4coutDestination.hh"
#include <streambuf>

class G4strstreambuf;

#ifdef G4MULTITHREADED

  extern G4GLOB_DLL G4ThreadLocal G4strstreambuf *G4coutbuf_p;
  extern G4GLOB_DLL G4ThreadLocal G4strstreambuf *G4cerrbuf_p;
  #define G4coutbuf (*G4coutbuf_p)
  #define G4cerrbuf (*G4cerrbuf_p)

#else  // Sequential

  extern G4GLOB_DLL G4strstreambuf G4coutbuf;
  extern G4GLOB_DLL G4strstreambuf G4cerrbuf;

#endif

class G4strstreambuf : public std::basic_streambuf<char>
{
  public:

    G4strstreambuf();
    ~G4strstreambuf();
    
    virtual G4int overflow(G4int c=EOF);
    virtual G4int sync();

#ifdef WIN32
    virtual G4int underflow();
#endif

    void SetDestination(G4coutDestination* dest);
    inline G4int ReceiveString ();
  
  private:

    char* buffer;
    G4int count, size;
    G4coutDestination* destination;

    // hidden...
    G4strstreambuf(const G4strstreambuf&);
    G4strstreambuf& operator=(const G4strstreambuf&);
};

#include "G4strstreambuf.icc"

#endif

