//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TGGiStreamFile Àà
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TGGiStreamFile ÉùÃ÷
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _TGGISTREAMFILE_H_
#define _TGGISTREAMFILE_H_

#include <stdio.h>
#include <io.h>

#if (ADS > 15)
#include <istream>
#else
#include <iostream.h>
#endif

class GEOAPI TGGiStreamFile
{
public:
	TGGiStreamFile();
	virtual ~TGGiStreamFile();

	int Pack(const TCHAR *dwgFile, const TCHAR *lzwFile);
	int UnPack(const TCHAR *lzwFile, const TCHAR *dwgFile);

#if (ADS > 15)
	void StreamCopy(std::istream & _libfile, std::ostream &sld_out, long sld_fsize);
#else
	void StreamCopy(istream & _libfile, ostream &sld_out, long sld_fsize);
#endif

private:
	void InitValue(void);

	int Read(int h,void *buf,int num,bool bProtect = false);
	int Write(int h,void *buf,int num,bool bProtect = false);
	
	void WriteBit(short,short,short, unsigned char *,int);
	int ReadBit(short,short, unsigned char *,int);
	int PackFile(short size,int h1,int h2); 
	int UnPackFile(short size,int h1,int h2);
	
};
#endif