load 'operating_system.rb'

def speak(text)
  if OperatingSystem.windows?
    require 'win32/sapi5'
    v = Win32::SpVoice.new
    v.Speak(text)
  elsif OperatingSystem.mac?
    IO.popen(["say"], "w") {|pipe| pipe.puts text}
  else
    # Try to run "espeak". No OperatingSystem check: "espeak" is
    # for Linux but is also an optional package for BSD.
    IO.popen(["espeak", "-stdin"], "w") {|pipe| pipe.puts text}
  end
end

speak 'This is an example of speech synthesis.'