63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
//=======================================================================
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//
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// Copyright (c) 1999 Microsoft Corporation. All Rights Reserved.
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//
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// File: filecrc.h
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//
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// Purpose: Calculating and using CRC for files
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//
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//=======================================================================
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#ifndef _FILECRC_H
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#define _FILECRC_H
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// size of the CRC hash in bytes
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const int WUCRC_HASH_SIZE = 20;
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// binary structure to hold the hash
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struct WUCRC_HASH
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{
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BYTE HashBytes[WUCRC_HASH_SIZE];
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};
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struct WUCRCMAP
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{
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DWORD dwKey;
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WUCRC_HASH CRC;
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};
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HRESULT CalculateFileCRC(LPCTSTR pszFN, WUCRC_HASH* pCRC);
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HRESULT StringFromCRC(const WUCRC_HASH* pCRC, LPTSTR pszBuf, int cbBuf);
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HRESULT CRCFromString(LPCSTR pszCRC, WUCRC_HASH* pCRC);
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HRESULT SplitCRCName(LPCSTR pszCRCName, WUCRC_HASH* pCRC, LPSTR pszName);
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HRESULT MakeCRCName(LPCTSTR pszFromName, const WUCRC_HASH* pCRC, LPTSTR pszToName, int cbToName);
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HRESULT GetCRCNameFromList(int iNo, PBYTE pmszCabList, PBYTE pCRCList, LPTSTR pszCRCName, int cbCRCName, LPTSTR pszCabName);
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int __cdecl CompareWUCRCMAP(const void* p1, const void* p2);
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class CCRCMapFile
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{
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public:
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CCRCMapFile(const BYTE* pMemData, DWORD dwMemSize);
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HRESULT GetValue(DWORD dwKey, WUCRC_HASH* pCRC);
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HRESULT GetCRCName(DWORD dwKey, LPCTSTR pszFromName, LPTSTR pszToName, int cbToName);
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private:
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CCRCMapFile() {} // cannot use default constructor
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WUCRCMAP* m_pEntries;
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DWORD m_cEntries;
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};
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#endif // _FILECRC_H
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