From: Friedrich Dominicus <frido@...>
Date: 2003-02-28T23:23:38+09:00
Subject: Re: I'm stuck

ts <decoux@moulon.inra.fr> writes:

> >>>>> "F" == Friedrich Dominicus <frido@q-software-solutions.com> writes:
> 
> F> int main (void){
> F>   int i;
> F>   VALUE obj;
> F>   VALUE klass;
> F>   ruby_init(); /* embed Ruby into this program! */
> 
>     /* At this step you are playing a dangerous game with the GC */
what you you mean which this step ?
ruby_init? How should I know what else to set up or use?



> 
> F>   /* uby_script("embed");
> F>      rb_load_file("t1.rb"); */ 
> F>   obj = rb_eval_string("load 't1.rb'");
> 
> 
>      ruby_init_loadpath(); /* initialize search path */
>      rb_require("t1");     /* no need for eval */
> 
> F>         /* question why does rb_load_file does not work? */
> F>   klass =  rb_const_get(rb_cObject, rb_intern("T1"));
> F>         /* why does this work? Well my understanding ist that I loaded
> F> the file into the embedded ruby, after that T1 is known, so I can look
> F> it up. The problem I now is why rb_load_file does not work the same
> F> way */
> 
>     /* test if @@some_var is defined before trying to access it */
> 
> F>   obj = rb_cv_get(klass, "@@some_var");
> 
>     /* test here if obj is really an Array */
>   
> F>   for (i = 0; i < RARRAY(obj)->len; ++i){
> F>     printf("obj[%d] = %s\n", i, STR2CSTR(rb_ary_entry(obj,i)));
> F>   }
> F>   return 0;
> F> }
> 
>  If ruby give an error, you'll have a segfault : none of your calls are
>  protected. 
Thanks I'll rewrite my stuff. I just wonder how you learned the usage,
as told before I have searched a lot if messages, but did not found
something that shows this...

Regards
Friedrich