crc32static.h

CRC循环冗余检测CRC Cyclic Redundancy Detected

#ifndef _CRC32STATIC_H_
#define _CRC32STATIC_H_

#include "Common.h"

class CCrc32Static
{
public:
	CCrc32Static();
	virtual ~CCrc32Static();

	static DWORD StringCrc32(LPCTSTR szString, DWORD &dwCrc32);
	static DWORD FileCrc32Streams(LPCTSTR szFilename, DWORD &dwCrc32);
	static DWORD FileCrc32Win32(LPCTSTR szFilename, DWORD &dwCrc32);
	static DWORD FileCrc32Filemap(LPCTSTR szFilename, DWORD &dwCrc32);
	static DWORD FileCrc32Assembly(LPCTSTR szFilename, DWORD &dwCrc32);

protected:
	static bool GetFileSizeQW(const HANDLE hFile, QWORD &qwSize);
	static inline void CalcCrc32(const BYTE byte, DWORD &dwCrc32);

	static DWORD s_arrdwCrc32Table[256];
};

#endif