#!/usr/bin/env ruby

require 'device_input'

device = ARGV.shift || '/dev/input/event0'
mode = (ARGV.shift || 'normal').downcase

if !File.readable?(device)
  puts "#{device} cannot be read.  Perhaps you need to sudo?"
  exit 1
end

case mode
when 'normal'
  mode = 'to_s'
when 'pretty', 'raw', 'bytes'
  # ok
else
  raise "unsupported mode: #{mode}"
end

DeviceInput.read_from(device) { |event|
  puts event.send(mode)
}