From: nobu.nokada@...
Date: 2003-02-07T11:39:47+09:00
Subject: Re: Embedding Ruby in C code

Hi,

At Thu, 6 Feb 2003 18:50:18 +0900,
Szymon Drejewicz wrote:
> How to execute Ruby script without ruby_run() after rb_load_file()
> command? I'm going to run some Ruby script many times in one C
> application, but direct reading ruby file and passing it to
> rb_eval_string() is not comfortable. In other hand ruby_run() calls
> exit(). Maybe there is some way to launch script not by using
> ruby_run().

1.8 has ruby_exec() and ruby_cleanup(), but none in 1.6.
ruby_exec() executes loaded AST and returns tag status.
Following example loads "embedded.rb" and runs it thrice.

#include "ruby.h"

int
main(int argc, char **argv)
{
    int status;
    ruby_init();
    ruby_script(argv[0]);
    ruby_init_loadpath();
    rb_protect((VALUE (*)())rb_load_file, (VALUE)"embedded.rb", &status);
    if (status == 0) {
	int i;
	for (i = 0; i < 3; i++)
	    if ((status = ruby_exec()) != 0) break;
    }
    return ruby_cleanup(status);
}

-- 
Nobu Nakada