setaudio ruby

#!/usr/bin/env ruby
# encoding: utf-8
 
# Little script to select output source from cli.
# SwitchAudioSource must be in your PATH
# https://code.google.com/p/switchaudio-osx/

if ARGV.empty?
  sources = `SwitchAudioSource -a | grep -i output`.split "\n"
  sources.each_with_index { |source, index| puts "#{index}) #{source}" }
  option = gets
  audio = sources[option.to_i].sub(' (output)','')
else
  option = ARGV[0]
  case option
  when '1'
    audio = 'Built-in Output'
  when '2'
    audio = 'Saffire 6USB2.0'
  when '3'
    audio = 'HDMI'
  else
    puts 'opcion invalida'
    audio = 'nada che'
  end
end
`SwitchAudioSource -t output -s "#{audio}"` unless audio == 'nada che'