From: Dennis Schridde <devurandom@...>
Date: 2005-09-11T00:05:42+09:00
Subject: Re: Embedding Ruby into C

--nextPart3192210.jG0MBPicdI
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

Am Freitag, 9. September 2005 20:44 schrieb Bill Kelly:
> From: "Dennis Schridde" <devurandom@gmx.net>
>
> > But I think this is again very complex and it uses C++,
> > what seems to make it relatively different from a plain C
> > approach.
>
> I haven't compiled the following - just cobbled it together
> from other code that does run.  But maybe it will be of some
> help?
>
>
> #include "ruby.h"
>
> static VALUE mFoo;
>
> static VALUE foo_hello_world (VALUE self)
> {
>     printf("Hello! I'm a C function, called from Ruby.\n");
>     return self;
> }
>
> int main (int argc, char **argv)
> {
>     // Initialize Ruby.......
>
> #ifdef _WIN32
>     // ruby win32 init
>     NtInitialize(&argc, &argv);
> #endif
>
>     ruby_init();
>     ruby_script("embedded");
>
>
>     // define a new module "Foo" containing a method "hello_world"
>     // which calls the C function foo_hello_world()
>     mFoo =3D rb_define_module("Foo");
>     rb_define_module_function(mFoo, "hello_world",
>                               RUBY_METHOD_FUNC(foo_hello_world), 0);
>
>
>     // load and execute a hypothetical "test.rb" which
>     // can do whatever it wants - including call Foo.hello_world
>     int status;
>     rb_load_protect(rb_str_new2("test.rb"), 0, &status);
>     if (status =3D=3D 0) {
>         int state =3D ruby_exec();
>     }
>
>     // TODO: example calling arbitrary Ruby method from C
>
>     return 0;
> }
>
>
> I didn't provide an example of calling an arbitrary Ruby
> method from C.  I know it's easy, but I didn't have an example
> handy.
Thanks!

Now there are only two questions left:
1st -- How do I call the Ruby method from C?
I know that I must call it by ID and give also a reciever... But how do I g=
et=20
them? Or is there another method, without ID and reciever needed?

2nd -- How do I callback?

Thanks,
Dennis

--nextPart3192210.jG0MBPicdI
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.9.18 (GNU/Linux)

iD8DBQBDIvZCNNHWXccyBJIRAvoCAKDaJYJXkTeO6EHzGbvpL+8ux50XgQCeKkLq
KV4Nud2cPpEOGeOO9ScJFUY=
=9067
-----END PGP SIGNATURE-----

--nextPart3192210.jG0MBPicdI--