0000572: add a method to Part module to read BRep data from string

git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5410 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d

src/Mod/Part/App/TopoShape.cpp

@@ -609,6 +609,32 @@ void TopoShape::importBrep(const char *FileName)
     }
 }
 
+void TopoShape::importBrep(std::istream& str)
+{
+    try {
+        // read brep-file
+        BRep_Builder aBuilder;
+        TopoDS_Shape aShape;
+#if OCC_HEX_VERSION >= 0x060300
+        Handle_Message_ProgressIndicator pi = new ProgressIndicator(100);
+        pi->NewScope(100, "Reading BREP file...");
+        pi->Show();
+        BRepTools::Read(aShape,str,aBuilder,pi);
+        pi->EndScope();
+#else
+        BRepTools::Read(aShape,str,aBuilder);
+#endif
+        this->_Shape = aShape;
+    }
+    catch (Standard_Failure) {
+        Handle(Standard_Failure) aFail = Standard_Failure::Caught();
+        throw Base::Exception(aFail->GetMessageString());
+    }
+    catch (const std::exception& e) {
+        throw Base::Exception(e.what());
+    }
+}
+
 void TopoShape::write(const char *FileName) const
 {
     Base::FileInfo File(FileName);

src/Mod/Part/App/TopoShape.h

@@ -120,6 +120,7 @@ public:
     void importIges(const char *FileName);
     void importStep(const char *FileName);
     void importBrep(const char *FileName);
+    void importBrep(std::istream&);
     void exportIges(const char *FileName) const;
     void exportStep(const char *FileName) const;
     void exportBrep(const char *FileName) const;

src/Mod/Part/App/TopoShapePy.xml

@@ -48,6 +48,11 @@ Sub-elements such as vertices, edges or faces are accessible as:
         <UserDocu>Export the content of this shape to an STL mesh file.</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="importBrep">
+      <Documentation>
+        <UserDocu>Import the content to this shape of a string in BREP format.</UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="extrude">
       <Documentation>
         <UserDocu>Extrude the shape along a direction.</UserDocu>

src/Mod/Part/App/TopoShapePyImp.cpp

@@ -311,6 +311,30 @@ PyObject*  TopoShapePy::exportBrep(PyObject *args)
     Py_Return;
 }
 
+PyObject*  TopoShapePy::importBrep(PyObject *args)
+{
+    PyObject* input;
+    if (!PyArg_ParseTuple(args, "O", &input))
+    //char* input;
+    //if (!PyArg_ParseTuple(args, "s", &input))
+        return NULL;
+
+    try {
+        // read brep
+        Base::PyStreambuf buf(input);
+        std::istream str(0);
+        str.rdbuf(&buf);
+        //std::stringstream str(input);
+        getTopoShapePtr()->importBrep(str);
+    }
+    catch (const Base::Exception& e) {
+        PyErr_SetString(PyExc_Exception,e.what());
+        return NULL;
+    }
+
+    Py_Return;
+}
+
 PyObject*  TopoShapePy::exportStl(PyObject *args)
 {
     char* filename;