From: Jim Freeze <jim@...>
Date: 2003-05-06T00:37:17+09:00
Subject: Re: SWIG on Solaris problem

On Tuesday,  6 May 2003 at  0:18:24 +0900, Lyle Johnson wrote:
> Jim Freeze wrote:
> 
> > Ok, so, let me change things a bit here. The fact2 code was just
> > to do a test to see why int* did not work. I am really trying
> > to wrap the itkDB library. The function is defined as:
> > 
> >  dbInit(int *pnArgs, char **pString);
> >  
> >  (or dbInit(int *pnArgs, String *pString);
> >   where typdef char * String;)
> > 
> >  I expect to call it from ruby as:
> > 
> >  require 'itkdb'
> >  Itkdb.dbInit(1, "some_path")
> 
> OK, this is getting a little trickier. Try this typemap:
> 
>      %module example
> 
>      %typemap(in) (int *pnArgs, String *pString) (int temp, int i) {
>          Check_Type($input, T_ARRAY);
>          temp = RARRAY($input)->len;
>          $1 = &temp;
>          $2 = (String *) malloc(sizeof(String));
>          for (i = 0; i < $1; i++) {
>              $2[i] = StringValuePtr(rb_ary_entry($input, i));
>          }
>      }
> 
>      %typemap(freearg) String *pString {
>          free((void *) pString);
>      }
> 
>      void dbInit(int *pnArgs, String *pString);
> 
> Hope this helps,
> 

Thanks. I'll give it a try.


-- 
Jim Freeze
----------
There is a certain impertinence in allowing oneself to be burned for an
opinion.
		-- Anatole France