ffi / ffi

ruby-ffi

    by Wayne Meissner
    http://wiki.github.com/ffi/ffi

DESCRIPTION:

Ruby-FFI is a ruby extension for programmatically loading dynamic libraries, binding functions within them, and calling those functions from Ruby code. Moreover, a Ruby-FFI extension works without changes on Ruby and JRuby. Discover why should you write your next extension using Ruby-FFI here.

FEATURES/PROBLEMS:

• It has a very intuitive DSL
• It supports all C native types
• It supports C structs (also nested), enums and global variables
• It supports callbacks
• It has smart methods to handle memory management of pointers and structs

SYNOPSIS:

  require 'ffi'

  module MyLib
    extend FFI::Library
    attach_function :puts, [ :string ], :int
  end

  MyLib.puts 'Hello boys using libc!'

For less minimalistic and more sane examples you may look at:

• the samples/ folder
• the examples on the wiki
• the projects using FFI listed on this page

REQUIREMENTS:

• You need a sane building environment in order to compile the extension.

DOWNLOAD/INSTALL:

From rubyforge:

  [sudo] gem install ffi

or from the git repository on github:

  git clone git://github.com/ffi/ffi.git
  cd ffi
  rake gem:install

CREDITS:

Special thanks to:

• Yehuda Katz
• Luc Heinrich
• Andrea Fazzi
• Mike Dalessio
• Hongli Lai
• Evan Phoenix
• Aman Gupta
• Beoran

LICENSE:

See LICENSE file.