i18n Swig Textmate Snippet

#!/usr/bin/env ruby
$: << ENV['TM_SUPPORT_PATH'] + '/lib'
require 'escape'
def esc(str)
  e_sn(str).gsub(/\}/, '\\}').gsub(/"/, '\\\\"')
end

s = STDIN.read
if ENV.has_key? 'TM_SELECTED_TEXT'
  print "${1:{{ __(\"#{esc s}\") \\}\\}}"
else
  print "{{ __(\"#{e_sn s}\") }}"
end