ubiquitous ruby clipboard processing script

ubiquitous.rb

#!/usr/bin/env ruby
clipboard = `pbpaste`

if clipboard.match /https?:\/\/w?w?w?\.((youtube)|(listenonrepeat))\.com\/.*/
	# Youtube / Listen on repeat
	if clipboard["youtube"] != nil
		clipboard["youtube"] = "listenonrepeat"
	elsif clipboard["listenonrepeat"] != nil
		clipboard["listenonrepeat"] = "youtube"
	end
end

output = clipboard
 
begin
	output = eval(clipboard)
rescue Exception => e
	# silence exception
end

`printf \"#{output}\" | pbcopy`