#ifndef streamIOCtx
#define streamIOCtx

#include "gd.h"

#ifdef __cplusplus

#include <iostream>

class BGD_EXPORT_DATA_IMPL istreamIOCtx : public gdIOCtx
	{
public:
	typedef std::istream	stream_type;
	istreamIOCtx(stream_type & __stream)	{ init( & __stream); }

	static int	Getbuf (struct gdIOCtx * ctx, void * buf, int size);
	static int	Putbuf (struct gdIOCtx * , const void * , int );
	static void	Putchar (struct gdIOCtx * , int );
	static int	Getchar (struct gdIOCtx * ctx);
	static int	Seek (struct gdIOCtx * ctx, const int pos);
	static long	Tell (struct gdIOCtx * ctx);
	static void	FreeCtx (struct gdIOCtx * ctx);

	void init(stream_type * __stream)
		{
		getC = Getchar;
		putC = Putchar;
		getBuf = Getbuf;
		putBuf = Putbuf;
		tell = Tell;
		seek = Seek;
		gd_free = FreeCtx;
		_M_stream = __stream;
		}
private:
	stream_type *	_M_stream;
	};
inline gdIOCtx * gdNewIstreamCtx (std::istream * __stream)
	{
	return new istreamIOCtx(* __stream);
	}

class BGD_EXPORT_DATA_IMPL ostreamIOCtx : public gdIOCtx
	{
public:
	typedef std::ostream	stream_type;
	ostreamIOCtx(stream_type & __stream)	{ init( & __stream); }

	static int	Getbuf (struct gdIOCtx * , void * , int );
	static int	Putbuf (struct gdIOCtx * ctx, const void * buf, int size);
	static int	Getchar (struct gdIOCtx * );
	static void	Putchar (struct gdIOCtx * ctx, int a);
	static int	Seek (struct gdIOCtx * ctx, const int pos);
	static long	Tell (struct gdIOCtx * ctx);
	static void	FreeCtx (struct gdIOCtx * ctx);

	void init(stream_type * __stream)
		{
		getC = Getchar;
		putC = Putchar;
		getBuf = Getbuf;
		putBuf = Putbuf;
		tell = Tell;
		seek = Seek;
		gd_free = FreeCtx;
		_M_stream = __stream;
		}
private:
	stream_type *	_M_stream;
	};
inline gdIOCtx * gdNewOstreamCtx (std::ostream * __stream)
	{
	return new ostreamIOCtx(* __stream);
	}

#endif // __cplusplus

#endif // streamIOCtx