StreamHandler.h

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// --------------------------------------------------------------------------
//                   OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2018.
//
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// $Maintainer: Timo Sachsenberg$
// $Authors: Stephan Aiche$
// --------------------------------------------------------------------------

#pragma once

#include <OpenMS/DATASTRUCTURES/String.h>
#include <map>
#include <ostream>

using std::ostream;
using std::map;

namespace OpenMS
{
  class OPENMS_DLLAPI StreamHandler
  {
public:
    enum StreamType
    {
      FILE,
      STRING
    };

    StreamHandler();

    virtual ~StreamHandler();

    Int registerStream(StreamType const type, const String & stream_name);

    void unregisterStream(StreamType const type, const String & stream_name);

    ostream & getStream(StreamType const type, const String & stream_name);


    bool hasStream(const StreamType type, const String & stream_name);

protected:

    map<String, ostream *>  name_to_stream_map_;  
    map<String, StreamType> name_to_type_map_;  
    map<String, Size>      name_to_counter_map_;   

    ostream * createStream_(const StreamType type, const String & stream_name);

private:
    // copy constructor and assignment operator are hidden to avoid
    // creating multiple pointers to a single filestream instance

    StreamHandler(const StreamHandler & source);

    virtual StreamHandler & operator=(const StreamHandler & source);

    friend OPENMS_DLLAPI std::ostream & operator<<(std::ostream & os, StreamHandler const & stream_handler);
  };

  OPENMS_DLLAPI std::ostream & operator<<(std::ostream & os, StreamHandler const & stream_handler);

  OPENMS_DLLAPI extern StreamHandler STREAM_HANDLER;
} // end namespace OpenMS