doublebuffering.h

一些加密算法的介绍,可对文件或字符串加密

//DoubleBuffering.h Header File

#ifndef __DOUBLEBUFFERING_H__
#define __DOUBLEBUFFERING_H__

//Typical DISCLAIMER:
//The code in this project is Copyright (C) 2003 by George Anescu. You have the right to
//use and distribute the code in any way you see fit as long as this paragraph is included
//with the distribution. No warranties or claims are made as to the validity of the
//information and code contained herein, so use it at your own risk.

#include <fstream>

using namespace std;

class CDoubleBuffering
{
public:
	//Constructor
	CDoubleBuffering(ifstream& in, char* pcBuff, int iSize, int iDataLen);
	//Get Next Data Buffer
	int GetData(char* pszDataBuf, int iDataLen=-1);

private:
	ifstream& m_rin;
	int m_iSize;
	int m_iSize2; //m_iSize/2
	int m_iDataLen;
	//Current Position
	int m_iCurPos;
	//End Position
	int m_iEnd;
	//Which Buffer
	int m_iBuf;
	char* m_pcBuff;
	//EOF attained
	bool m_bEOF;
};

#endif //__DOUBLEBUFFERING_H__