ByteOrderDataInStream.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: io/ByteOrderDataInStream.java rev. 1.1 (JTS-1.10)
 *
 **********************************************************************/
 
#ifndef GEOS_IO_BYTEORDERDATAINSTREAM_H
#define GEOS_IO_BYTEORDERDATAINSTREAM_H
 
#include <geos/export.h>
 
//#include <geos/platform.h>
//#include <geos/io/ParseException.h>
//#include <geos/io/ByteOrderValues.h>
#include <geos/inline.h>
 
#include <iosfwd> // ostream, istream (if we remove inlines)
 
namespace geos {
namespace io {
 
/*
 * \class ByteOrderDataInStream io.h geos.h
 * 
 * Allows reading an stream of primitive datatypes from an underlying
 * istream, with the representation being in either common byte ordering.
 *
 */
class GEOS_DLL ByteOrderDataInStream {
 
public:
 
        ByteOrderDataInStream(std::istream *s=NULL);
 
        ~ByteOrderDataInStream();

        void setInStream(std::istream *s);
 
        void setOrder(int order);
 
        unsigned char readByte(); // throws ParseException
 
        int readInt(); // throws ParseException
 
        long readLong(); // throws ParseException
 
        double readDouble(); // throws ParseException
 
private:
        int byteOrder;
        std::istream *stream;
 
        // buffers to hold primitive datatypes
        unsigned char buf[8];
 
};
 
} // namespace io
} // namespace geos
 
#ifdef GEOS_INLINE
#include <geos/io/ByteOrderDataInStream.inl>
#endif
 
#endif // #ifndef GEOS_IO_BYTEORDERDATAINSTREAM_H