I'm trying to wrap SFML's error stream to retrieve last error message into Python space.
Here is how SFML declares it's error stream (see source):
namespace sf {
std::ostream& err();
}
SFML says, that you can redirect the above stream into your buffer (in the example into a file, but I want to convert it to a string eventually):
// Redirect to a file
std::ofstream file("sfml-log.txt");
std::streambuf* previous = sf::err().rdbuf(file.rdbuf());
My .pxd file with some simplistic wrappers:
cdef extern from '<sstream>' namespace 'std' nogil:
cppclass stringbuf:
stringbuf() except +
cdef extern from '<iostream>' namespace 'std' nogil:
cppclass ostream:
stringbuf* rdbuf(stringbuf*)
cdef extern from 'SFML/System.hpp' namespace 'sf' nogil:
ostream cerr 'sf::err'
And my .pyx module:
cdef void set_error_handler(stringbuf& buffer):
cerr.rdbuf(&buffer)
cdef object get_last_error():
error = error_buffer.str()
error_buffer.str('')
return error
cdef stringbuf error_buffer
set_error_handler(error_buffer)
Also do I'm converting stringbuf with the error message into a Python string properly in the get_last_error() function?
Update
I've managed to compile my Cython code. I've added parentheses here:
cdef extern from 'SFML/System.hpp' namespace 'sf' nogil:
ostream cerr 'sf::err()' # Added ()
But still I can't retrieve an error reported by SFML to appear in my stringbuf error_buffer when calling get_last_error() defined above (return value is an empty string).
