A libffi wrapper for Ruby.
Fiddle is an extension to translate a foreign function interface (FFI) with ruby.
It wraps libffi, a popular C library which provides a portable interface that allows code written in one language to call code written in another language.
Add this line to your application's Gemfile:
And then execute:
Or install it yourself as:
$ gem install fiddle
Here we will use Fiddle::Function to wrap floor(3) from libm
require 'fiddle' libm = Fiddle.dlopen('/lib/libm.so.6') floor = Fiddle::Function.new( libm['floor'], [Fiddle::TYPE_DOUBLE], Fiddle::TYPE_DOUBLE ) puts floor.call(3.14159) #=> 3.0
After checking out the repo, run
bin/setup to install dependencies. Then, run
rake test to run the tests. You can also run
bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run
bundle exec rake install. To release a new version, update the version number in
version.rb, and then run
bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/ruby/fiddle.
The gem is available as open source under the terms of the BSD-2-Clause.