G4FilecoutDestination.hh

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// --------------------------------------------------------------------
// GEANT 4 class header file 
//
// Class Description:
//
// Implements a cout destination to a file.

//      ---------------- G4FilecoutDestination ----------------
//
// Author: A.Dotti (SLAC), April 2017
// --------------------------------------------------------------------
#ifndef G4FILECOUTDESTINATION_HH_
#define G4FILECOUTDESTINATION_HH_

#include <fstream>
#include <memory>

#include "G4coutDestination.hh"

class G4FilecoutDestination : public G4coutDestination
{
  public:

    explicit G4FilecoutDestination(const G4String& fname ,
             std::ios_base::openmode mode = std::ios_base::app )
      : m_name(fname), m_mode(mode), m_output(nullptr) {}
    virtual ~G4FilecoutDestination();

    void SetFileName(const G4String& fname) { m_name = fname; }

    void Open(std::ios_base::openmode mode=std::ios_base::app);
      // By default append to existing file
    void Close();

    virtual G4int ReceiveG4cout(const G4String& msg) override;
    virtual G4int ReceiveG4cerr(const G4String& msg) override;

  private:

    G4String m_name;
    std::ios_base::openmode m_mode;
    std::unique_ptr<std::ofstream> m_output;
};

#endif /* G4FILECOUTDESTINATION_HH_ */