ruby wrapper script for google closure compiler

compress-js.rb

#!/usr/bin/env ruby

begin
  require 'closure-compiler'
rescue LoadError => e
  puts e.message
  puts "to fix: gem install 'closure-compiler'"
  exit 1
end

if ARGV.count != 1
  puts "usage: #{File.basename($0)} <path>"
  exit 0
end

path = ARGV.first

unless File.exists?(path)
  puts "file not found: #{path}"
  exit 1
end

compiler = Closure::Compiler.new
puts compiler.compile(File.open(path))