faye_chat.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'faye'

abort "Usage: #{$0} <url> <channel> <nick>" if ARGV.length != 3
$url, $channel, $nick = ARGV

$client = Faye::Client.new($url) 

trap(:INT) { EM.stop_event_loop }

def printmsg(text) print text; STDOUT.flush; end

module KeyboardInput
  include EM::Protocols::LineText2
  def receive_line(message)
    $client.publish($channel, "#{$nick}: #{message}")
  end
end

puts "Starting chat client, ^C to exit..."
printmsg "#{$nick}> "

EM.run do
  $client.subscribe($channel) { |message| printmsg "\n#{message}\n#{$nick}> "}
  EM.open_keyboard(KeyboardInput)
end