private IFCType GetIfcType(string path)
{
IFCType result = IFCType.None;
IntPtr ifcModel = ifcEngine.OpenModelUnicode(IntPtr.Zero, path, Constants.IFC2X3_SCHEMA_NAME);
if (ifcModel != IntPtr.Zero)
{
ifcEngine.GetSPFFHeaderItem(ifcModel, 9, 0, IfcEngine.SdaiType.String, out IntPtr outputValue);
string headerItem = Marshal.PtrToStringAnsi(outputValue);
if (!string.IsNullOrEmpty(headerItem))
{
if (headerItem.Contains(IFCType.IFC2.ToString()))
{
result = IFCType.IFC2;
}
else if (headerItem.Contains(IFCType.IFC4.ToString()))
{
result = IFCType.IFC4;
}
}
ifcEngine.CloseModel(ifcModel);
}
return(result);
}