convert.rb

require 'rubygems'
require 'syntax/convertors/html'

def to_html(dirname)
  convertor = Syntax::Convertors::HTML.for_syntax "ruby"
  Dir.chdir(dirname)
  Dir.glob("*.rb") do |filename|
    f = File.new(filename.gsub(".rb", ".html"), "w")
    f << convertor.convert( File.read( filename ) )
    f.close
  end
end

to_html(ARGV[0])