IOStream.h

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#ifndef IOSTREAM_H_
#define IOSTREAM_H_

#include "InStream.h"
#include "OutStream.h"

class NullIOStream;

class IOStream: public InStream, public OutStream
{
};

class NullIOStream: public IOStream
{
    virtual InStream& read( char* buffer, unsigned int num )
    {
        return *this;
    }

    virtual bool isReadable()
    {
        return false;
    }

    virtual bool eof()
    {
        return true;
    }

    virtual OutStream& write( const char* buffer, unsigned int num )
    {
        return *this;
    }

    virtual bool isWritable()
    {
        return false;
    }

};

#endif /* IOSTREAM_H_ */