strmdata.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        A.H.Bril
 Date:          3-4-1996
 Contents:      Data on any stream
________________________________________________________________________

-*/

#include "basicmod.h"

#include "ptrman.h"
#include "bufstring.h"
#include <iosfwd>


mExpClass(Basic) StreamData
{
public:

                        StreamData();
                        StreamData(const StreamData&)   = delete;
                        StreamData(StreamData&&);

    StreamData&         operator=(const StreamData&)    = delete;
    StreamData&         operator=(StreamData&&);

    void mDeprecated    transferTo(StreamData&);        

    void                close();
    bool                usable() const;

    void                setFileName( const char* fn );
    const char*         fileName() const;

    std::ios*           streamPtr() const;

    std::istream*       iStrm() const { return impl_->istrm_; }
    std::ostream*       oStrm() const { return impl_->ostrm_; }

    void                setIStrm( std::istream* );
    void                setOStrm( std::ostream* );

    //Internal use (unless you're making connectors to weird external streams)
    mExpClass(Basic) StreamDataImpl
    {
    public:
        virtual void    close();
        virtual         ~StreamDataImpl() {}
        BufferString    fname_;
        std::istream*   istrm_ = 0;
        std::ostream*   ostrm_ = 0;
    };

    void setImpl(StreamDataImpl*);

private:

    PtrMan<StreamDataImpl>      impl_;

public:

                                //Use iStrm() and oStrm() instead
    mDeprecated std::istream*   istrm;
    mDeprecated std::ostream*   ostrm;
};