/*
 * Copyright (C) 2007-2014 Xagasoft, All rights reserved.
 *
 * This file is part of the libbu++ library and is released under the
 * terms of the license contained in the file LICENSE.
 */

#ifndef BU_HEX_H
#define BU_HEX_H

#include "bu/filter.h"

namespace Bu
{
    /**
     * This very simple filter encodes to/decodes from hex encoded string data.
     * The primary use of this filter is in debugging, use it with
     * Bu::encodeStr to easily create hex dumps of string data, even other raw
     * structures.
     *
     *@code
     Bu::println("Hexdump: " + Bu::encodeStr<Bu::Hex>("Test data ;)") );
     @endcode
     * Or...
     *@code
     complex_struct data;
     ...
     Bu::println("Hexdump: " +
        Bu::encodeStr<Bu::Hex>(
            Bu::String( &data, sizeof(data) )
            )
        );
     @endcode
     **/
    class Hex : public Bu::Filter
    {
    public:
        Hex( Bu::Stream &rNext, bool bUpperCase=false, int iChunk=-1 );
        virtual ~Hex();

        virtual void start();
        virtual Bu::size stop();

        virtual Bu::size read( void *pBuf, Bu::size iBytes );
        virtual Bu::size write( const void *pBuf, Bu::size iBytes );
        using Bu::Stream::write;

    private:
        int iChunk;
        Bu::size iPos;
        char cIn[2];
        int iIn;
        const char *sChrs;
    };
};

#endif