#pragma once

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

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

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

	void StreamCopy(std::istream & _libfile, std::ostream &sld_out, long sld_fsize);

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);
	
};