main.cpp

#include <stdio.h>

#include <TopoDS_Shape.hxx>
#include <TCollection_AsciiString.hxx>
#include <TCollection_HAsciiString.hxx>
#include <XSControl_WorkSession.hxx>
#include <Interface_InterfaceModel.hxx>
#include <XSControl_TransferReader.hxx>
#include <Transfer_TransientProcess.hxx>
#include <StepRepr_Representation.hxx>
#include <StepRepr_RepresentationItem.hxx>
#include <TransferBRep.hxx>
#include <STEPControl_Reader.hxx>


TopoDS_Shape getShape(STEPControl_Reader &reader, char* shapeName) {
    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<=nb; 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;
}


//dump all labels
void dumpLabels(STEPControl_Reader &reader) {
    const Handle(XSControl_WorkSession)& theSession = reader.WS();
    const Handle(Interface_InterfaceModel)& theModel = theSession->Model();

    Standard_Integer nb = theModel->NbEntities();
    std::cout << "number of entities: " << nb << endl;
    for(Standard_Integer i=1; i<=nb; i++) {
        Handle(StepRepr_Representation) ent = Handle(StepRepr_Representation)::DownCast(theModel->Value(i));
        if (ent.IsNull()) {
            cout << "ent is null" << endl;
            continue;
        }
        if (ent->Name().IsNull()) {
            cout << "ent is not null but does not have a name" << endl;
            continue;
        }
        std::cout << "dumpLabels: " << ent->Name()->ToCString() << std::endl;
    }
}


int main() {
    STEPControl_Reader reader;
    reader.ReadFile("MJ_3PSA_B2B_AFT_S-PLATE_SOURCE_lan04_2013-06-18.stp");
    dumpLabels(reader);
    //TopoDS_Shape sh = getShape(reader, "CP3");

}