Searching for byte sequence

From:

"Kahlua" <kahlua@right.here>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 22 Apr 2008 13:24:32 GMT

Message-ID:

<kGlPj.2631$NK1.1963@trndny05>

I have a ListBox with a list of files in the c:\data\ folder with the
extension .dat
Now that I have the file coppied into buffer how do I search through the
buffer
for a specific sequence of bytes?

Thanks,
Ed

void CMyApp::OnSelchangeList()
{
  CString mess;
  CString JobFile;
  char cSelect[50];
  int Length;
  int nSelect;
  CByteArray buffer;
  CFile in;

  nSelect=SendDlgItemMessage(IDC_LIST, LB_GETCURSEL, 0, 0L);
  DlgDirSelect((LPSTR) cSelect, IDC_LIST);
  Length=strlen(cSelect);
  if (cSelect[Length-1]==0x2e)
    cSelect[Length-1]=0;
  JobFile = _T("c:\\data\\");
  JobFile += cSelect;
  JobFile += ".dat";
  mess = "Would you like to load ";
  mess += cSelect;
  mess += " as top ?";
  int a = MessageBox (mess, "Query", MB_ICONINFORMATION|MB_YESNO);
  if (a==IDNO) return;

  if(!in.Open(JobFile, CFile::modeRead)){
    DWORD err = ::GetLastError();
    CString msg;
    msg.Format(_T("Error opening file: %d"), err);
    AfxMessageBox(msg);
    return;
  }
  buffer.SetSize(in.GetLength());
  if((INT_PTR)in.Read(buffer.GetData(), buffer.GetSize()) !=
buffer.GetSize()){
    DWORD err = ::GetLastError();
    CString msg;
    msg.Format(_T("Error reading file: %d"), err);
    AfxMessageBox(msg);
    return;
  }
  in.Close();
}