foamVtkBase64Layer.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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-------------------------------------------------------------------------------
    Copyright (C) 2017 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::vtk::foamVtkBase64Layer
 
Description
    Base-64 encoded output layer - normally only used indirectly by formatters.
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_vtk_base64Layer_H
#define Foam_vtk_base64Layer_H
 
#include "foamVtkFormatter.H"
#include "base64Layer.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace vtk
{
 
/*---------------------------------------------------------------------------*\
                   Class vtk::foamVtkBase64Layer Declaration
\*---------------------------------------------------------------------------*/
 
class foamVtkBase64Layer
:
    public formatter,
    protected base64Layer
{
    // Private Data Members
 
        static const char* encoding_;
 
 
    // Private Member Functions
 
        //- No copy construct
        foamVtkBase64Layer(const foamVtkBase64Layer&) = delete;
 
        //- No copy assignment
        void operator=(const foamVtkBase64Layer&) = delete;
 
 
protected:
 
    // Protected Member Functions
 
        //- Write
        void write(const char* s, std::streamsize n);
 
 
    // Constructors
 
        //- Construct and attach to an output stream
        foamVtkBase64Layer(std::ostream& os);
 
public:
 
    //- Destructor. Closes/flushes the underlying layer
    virtual ~foamVtkBase64Layer();
 
 
    // Member Functions
 
        //- Name for the XML append encoding ("base64").
        virtual const char* encoding() const;
 
        //- Write leading size for binary output
        //  \return True - format uses this information
        virtual bool writeSize(const uint64_t numbytes);
 
        virtual void write(const uint8_t val);
        virtual void write(const label val);
        virtual void write(const float val);
        virtual void write(const double val);
 
        //- End the encoding sequence (padding the final characters with '=')
        virtual void flush();
 
        //- The encoded length for base64 encoded output.
        virtual std::size_t encodedLength(std::size_t n) const;
 
};
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace vtk
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //