From: dominic sisneros <dom@...>
Date: 2004-04-02T16:43:21+09:00
Subject: swig problem

I am trying to wrap a function that either takes a char * or NULL
How would I wrap this in swig?

The c version accepts a conts char * or NULL

librdf_node* librdf_new_node_from_blank_identifier(librdf_world *world, 
const char * identifier);

I do a typemap as follows

I tried this but am still getting a TypeError converting Nil to String

%typemap(ruby,in) const char *identifier {
if $input == Qnil{
	$1 == NULL;
else
	$1 = STR2CSTR($input);
}
}