UpdateLWJGL.rb

#!/usr/bin/env ruby

require 'fileutils'

lwjgl = File.expand_path(ARGV[0])
update = File.expand_path(ARGV[1])

if !File.directory?(lwjgl) || !File.directory?(update)
  abort("updatelwjgl.rb [FTB_Mod_Pack] [lwjgl]")
end

have = Dir.glob([
    "#{lwjgl}/jar/*.jar",
    "#{lwjgl}/native/linux/*.so",
    "#{lwjgl}/native/windows/*.dll"
  ])

replace = Dir.glob([
    "#{update}/minecraft/bin/*.jar",
    "#{update}/minecraft/bin/*.{so,dll}",
    "#{update}/minecraft/bin/natives/*.{so,dll}"
  ])

replace.each { |f|
  n = have.find { |h| File.basename(h) == File.basename(f) }
  if n
    puts "#{n} -> #{f}"
    FileUtils.cp(n, f)
  end
}