sh_file.h

rsa算法打的一个包

// SH_File.h: interface for the SH_File class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_SH_FILE_H__DF064315_6AB8_4BB9_9985_361564FE37E7__INCLUDED_)
#define AFX_SH_FILE_H__DF064315_6AB8_4BB9_9985_361564FE37E7__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "SH_Object.h"

class AFX_EXT_CLASS SH_File : public SH_Object  
{
public:
	SH_File();
	virtual ~SH_File();

    BOOL   Open(LPCTSTR cszFileName,LPCTSTR cszMode);
    VOID   Close();
    
    LONG   Read(char * buffer,int len);
    LONG   Write(const char * buffer,int len);
    char * ReadString(char * buffer,int len) const;
    char * ReadString(CString & buffer) const;
    LONG   WriteString(char * buffer);
    LONG   WriteString(CString buffer);

    LONG   GetLength();
    BOOL   Flush();

    BOOL   SeekToStart();
    BOOL   SeekToEnd();
    BOOL   SeekFromStart(LONG offset);
    BOOL   SeekFromEnd(LONG offset);
    BOOL   SeekFromCurrent(LONG offset);
    BOOL   Seek(LONG offset, int origin);

    BOOL   Delete();
private:
    FILE    * m_fp;
    CString   m_strFileName;
};

#endif // !defined(AFX_SH_FILE_H__DF064315_6AB8_4BB9_9985_361564FE37E7__INCLUDED_)