ffi-swig-generator is a ruby-ffi wrapper code generator based on SWIG interface files. ffi-swig-generator is able to traverse a XML parse tree file generated by the +swig+ command and to produce a ruby-ffi interface file from it. ffi-swig-generator is shipped with a command line tool (ffi-gen) and a rake task that automates the code generation process. ffi-swig-generator XML capabilities are provided by nokogiri.