How to Extract entity names or features from step file and express to xml file.

Hi everyone,
This is a first time that i use the open cascade and i want to ask everyone how to Extract entity names or features from step file and express to xml file? one more what is a shapeName from this parameter in this function and how can i get it? hope can anyone help me:

TopoDS_Shape getShape(char* shapeName,STEPControl_Reader reader)
{
const TCollection_AsciiString ascShapeName(shapeName);

const Handle(XSControl_WorkSession)& theSession = reader.WS();
const Handle(Interface_InterfaceModel)& theModel = theSession->Model();
const Handle(XSControl_TransferReader)& aReader = theSession->TransferReader();
const Handle(Transfer_TransientProcess)& tp = aReader->TransientProcess();

Standard_Integer nb = theModel->NbEntities();
TopoDS_Shape retShape;
for(Standard_Integer i=1; i {
Handle(StepRepr_Representation) ent =
Handle(StepRepr_Representation)::DownCast
(theModel->Value(i));

if (ent.IsNull()) continue;
Handle(Transfer_Binder) binder = tp->Find(ent);
if (binder.IsNull()) continue;
TopoDS_Shape oneShape = TransferBRep::ShapeResult(binder);
if (oneShape.IsNull()) continue;

if (ent->Name().IsNull())
continue;

if(ent->Name()->String().IsEqual(ascShapeName))
{
retShape = oneShape;
}
}

return retShape;
}

thank in advantage.