Technique for using std::ifstream, std::ofstream in python via SWIG?

Question

Is there a way to use std::[io]fstream\'s in python via swig?

I have a c-class with functions like:

void readFrom(std::istream& istr         


        

Answer 1

I don't know swig but assuming you need to create a copyable object, you might get away using a function like

std::shared_ptr make_ostream(std::string const& filename) {
    return std::make_shared(filename);
}

... and then use a forwarding function to call the function you actually want to call:

void writeTo(std::shared_ptr stream) {
    if (stream) {
        writeTo(*stream);
    }
}

(if overloading the names causes issues, you could call the forwarding function differently, of course).