IBE FT ParseFileName, C++ (vc++)

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//Microsoft (R) C/C++ Optimizing Compiler Version 19.00.23506 for x64

#include <iostream>
#include <atlstr.h>

CString parseFileName(CString filename) {
    CString ext(filename.Mid(44, 3));
    ext.MakeLower();
    CString filenameOUT("");
    filenameOUT.Format("%s_%s%s_%s_%s%s.%s",
        filename.Mid(27, 4),  //XXXX
        filename.Mid(5,  2),  //YY
        filename.Mid(33, 1),  //I
        filename.Mid(31, 2),  //TT
        filename.Mid(37, 6),  //DDMMAA
        filename.Mid(51, 1),  //G
        ext);                 //TIP
  
  return filenameOUT;
}

int main()
{
    CString f = CString("BALK.YL.CODBST00.D1010001.TDD3K041.DX231117.MOV.001P.YLEC2403.TMP");
    
    std::cout << "CD_APLI: " << f.Mid(5, 2) << "\n";
    std::cout << "CD_ETCA: " << f.Mid(27, 4) << "\n";
    std::cout << "CD_SERV_BKED: " << f.Mid(48, 3) << "\n";
    std::cout << "NM_ARQU_RETN: " << parseFileName(f) << "\n";
    std::cout << "TP_ARQU_RETN: " << f.Mid(44, 3) << "\n";
    std::cout << "CD_SUBS: " << f.Mid(33, 1) << "\n";
    std::cout << "NM_ARQU_HOST: " << f.Left(43) << "\n";
    std::cout << "CD_LAYOUT_BKED: " << f.Mid(53, 8) << "\n";
    std::cout << "DH_MOVI: " << f.Mid(37, 6) << "\n";
    if (f.GetLength() <= 65){
		std::cout << "NR_CONVENIO: \"\"" << "\n";
	} else {
		std::cout << "NR_CONVENIO: " << (LPCTSTR)f.Right(20) << "\n";
	}
    
    CString nrCtrArquivo = (((LPCTSTR)f.Mid(31, 2)));
    const char *pszNumber = nrCtrArquivo;
	char *pEnd;
	long int valor = strtol (pszNumber,&pEnd,36);
	char val[5];
	itoa(valor,val,10);
    std::cout << "NR_CTRL_ARQU_RETN: " << CString(val) << "\n";
}

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Compilation time: 2,7 sec, absolute running time: 0,32 sec, absolute service time: 3,03 sec