[Insight-users] wrapping with cswig

[Danial Saruji]

Hi,
I'm interested in using cswig to make a c++ wrapping of a different program, and trying to understand how it works from the examples. As far as I got these are the steps required to wrap a c++ extension with cswig:
 
1) Create a xml description of the c++ code
2) Create the index
3) Create the  cable/swig wrapper
4) Compile the original class and the created wrapper  in a  shared  lib
5) Load it into python (or whatever)

This is what I do:

1. D:\CableSwig\bin\bin\Debug\gccxml -fxml-start=_cable_ -fxml=.\Debug\example.xml  -DCSWIG -DCABLE_CONFIGURATION example.cpp

2. D:\CableSwig\bin\bin\Debug\cableidx .\Debug\example.xml .\Debug\example.idx

3. D:\CableSwig\bin\bin\Debug\cswig -ID:\PythonModules\Debug -ID:\CableSwig\CableSwig\SWIG\Lib -ID:\CableSwig\CableSwig\SWIG\Lib\python -v -module example -Cindex .\Debug\example.idx -o .\Debug\example_wrap.cxx -c++ -python .\Debug\example.xml

When reading the idx file, cswig throws an error message: error can not open {ds::Example} {example} {example1}

Any idea what I´m doing wrong? Is there maybe a detailed description of this process available? I couldn´t find much.

My example.cpp looks like this:

#include "example.h"



int ds::Example::fact(int n) {

 if (n < 0){ 

 return 0;

 }

 if (n == 0) {

 return 1;

 }

 else {

 return n * fact(n-1);

 }

}


#ifdef CABLE_CONFIGURATION

namespace _cable_

{

 const char* const group="example1";

 namespace wrappers

 {

 typedef ds::Example example;

 }

}


void cable_instantiate()

{

 using namespace _cable_::wrappers;

 sizeof(example);

}


#endif



Thanks and best regards,

Danial
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