From: Sean O'Halpin <sean.ohalpin@...>
Date: 2008-11-03T23:40:24+09:00
Subject: Re: Roguelike project?

On Sun, Nov 2, 2008 at 6:32 AM, Nit Khair <sentinel.2001@gmx.com> wrote:
> Michael Fellinger wrote:
>> On Sun, Nov 2, 2008 at 7:55 AM, Michal Suchanek <hramrach@centrum.cz>
>> wrote:
>>>>
>>>>  binding.
>>> at least link against ncursesw - at least that is how it worked for
>>> me.
>>
>> Could we use the new Ruby FFI to spare us the C mess?
> Haah! I read that today and was wondering myself. But i am not clear on
> how to link to .so or .a files. The example of getpid seems a little
> "magical" to me (*still* a newbie)
>
> Not to go offtopic, but does it mean we can load ncurse.so and then fire
> away.
> --

Yes - the FFI interface is really easy to use. You just need to
specify which lib you are referencing with the #ffi_lib method.

require 'rubygems'
require 'ffi'

module NCursesFFI
  extend FFI::Library
  ffi_lib 'ncurses'
  attach_function 'clear', [], :int
  attach_function 'endwin', [], :int
  attach_function 'getch', [], :int
  attach_function 'initscr', [], :int
  attach_function 'printw', [ :string ], :int
  attach_function 'refresh', [], :int
end

NCursesFFI.initscr
NCursesFFI.printw("Hello again")
NCursesFFI.refresh
NCursesFFI.getch
NCursesFFI.endwin

Regards,
Sean