public function __construct(OLEFile $oleFile)
 {
     $oleStream = $oleFile->Get_OLE_Stream();
     $seekPos = ftell($oleStream);
     $this->sectorSize = $oleFile->Get_Sector_Size();
     fseek($oleStream, 0);
     $difatArray = $oleFile->Get_DIFAT();
     foreach ($difatArray as $secID) {
         if ($secID != FAT::FREESECT && $secID != FAT::ENDOFCHAIN) {
             fseek($oleStream, $secID * $this->sectorSize + 512);
             $readBuf = Helpers::Hex_Str_To_Array(Helpers::Fix_Hex(bin2hex(fread($oleStream, $this->sectorSize)), 8), 8);
             for ($i = 0; $i < count($readBuf); $i++) {
                 $this->fatArray[] = $readBuf[$i];
             }
         }
     }
 }