C / C++ / MFC

szOperation =  "diff.exe"
szParams = " "C:\1.txt" "C:\WINDOWS\FileSafe\0017CF85-0029-0000-B9ED-DF4AD816684A\olvf.fs"
szCompareResFile ="C:\WINDOWS\FileSafe\0017CF85-0029-0000-B9ED-DF4AD816684A\cfv.fs.cr.1"

int CFSMgr::OperateGNUDiff(CString szOperation,CString szParams,CString szCompareResFile)
{
//	_ONERR(0 < szOperation.GetLength() && 
//		   0 < szParams.GetLength()    && 
//		   0 < szDestFile.GetLength(), return -1);

	int iOperationLen = szOperation.GetLength();
	int iParamsLen    = szParams.GetLength();
	CString szCmdLine(szOperation);
	szCmdLine += _T(" ");
	szCmdLine += szParams;
	TCHAR szCmd[CMD_LINE_BUFF_LEN];
	_tcsncpy(szCmd,(LPTSTR)(LPCTSTR)szCmdLine,iOperationLen + iParamsLen + 2);

	CString szEcnrypted(szCompareResFile);
	szEcnrypted += _T(".enc");

	CString szErrFile(szCompareResFile);
	szErrFile += _T(".err");

	CCrypt c;
	DWORD dwExitCode(0);
	int iLen = szEcnrypted.GetLength();
	TCHAR szKey[] = _T("FS@CORE@");
	TCHAR* lpszEncrypted = NULL;

	BOOL bSucc(FALSE);

	try
	{
		SECURITY_ATTRIBUTES sa;
		sa.nLength = sizeof(sa);
		sa.lpSecurityDescriptor = 0;
		sa.bInheritHandle = 1;

		HANDLE hOutput = CreateFile(szCompareResFile,
									GENERIC_READ|GENERIC_WRITE,
									FILE_SHARE_WRITE | FILE_SHARE_READ,
									&sa, 
									CREATE_ALWAYS,
									FILE_ATTRIBUTE_NORMAL, 
									0);
		HANDLE hErr	= CreateFile(szErrFile,
								 GENERIC_READ|GENERIC_WRITE,
								 FILE_SHARE_WRITE | FILE_SHARE_READ,
								 &sa, 
								 CREATE_ALWAYS,
								 FILE_ATTRIBUTE_NORMAL, 
								 0);

		STARTUPINFO         siStartupInfo;
		PROCESS_INFORMATION piProcessInfo;

		::ZeroMemory(&siStartupInfo, sizeof(siStartupInfo));
		::ZeroMemory(&piProcessInfo, sizeof(piProcessInfo));

		siStartupInfo.cb			= sizeof(siStartupInfo);
		siStartupInfo.dwFlags		= STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;		
		siStartupInfo.wShowWindow	= SW_HIDE;
		siStartupInfo.hStdOutput	= hOutput;
		siStartupInfo.hStdError		= hErr;
		
		bSucc = CreateProcess(0,    
							  szCmd,	
							  0,
							  0,
							  FALSE,
							  0,
							  0,
							  0,
							  &siStartupInfo,
							  &piProcessInfo);

//	    _ONERR(bSucc, return -1);
    	
    	while (TRUE)
        {
			bSucc = GetExitCodeProcess(piProcessInfo.hProcess, &dwExitCode);
//			_ONERR(bSucc, return -1);

			if (dwExitCode != STILL_ACTIVE)
				break;
			else
				Sleep(50);
		}

		CloseHandle(piProcessInfo.hProcess);
		CloseHandle(hOutput);
		CloseHandle(hErr);

		switch (dwExitCode)
		{
			case 0:
				
				bSucc = DeleteFile(szCompareResFile);
//				_ONERR(bSucc, return -1);
				return 0;
				
			case 1:

				lpszEncrypted = new TCHAR[iLen];
				_tcscpy(lpszEncrypted,szEcnrypted);

				c.EncryptFile((LPTSTR)(LPCTSTR)szCompareResFile,lpszEncrypted,szKey);
				if (lpszEncrypted)
					SAFE_DELETE(lpszEncrypted);

				bSucc = MoveFile(szEcnrypted,szCompareResFile);
				_ONERR(bSucc, return -1);
				
				return 1;

			case 2:

				ATLASSERT(FALSE);
				return 2;
			
			default:
				ATLASSERT(FALSE);
				return -1;
		}

		return 0;
	}
	catch(...)
	{
		ATLASSERT(FALSE);
		return -1;
    }
}