Fixes NDS rom names for use with R4 cards

rom_name_fix.rb

#!/usr/bin/env ruby
require 'optparse'
options = {}

OptionParser.new do |opts|
  opts.on('-d n', '--directory=n', 'Set Directory') do |d|
    options[:directory] = d
  end

  opts.on('-h', '--help', 'Displays Help') do
    puts opts
    exit
  end
end.parse!

def clean_name(filename)
  filename.gsub(/\A[\d\W]+|\(.+\)|\W/, '')
end

def rename_files(dir)
  Dir.foreach(dir) do |item|
    next if item == '.' || item == '..'
    new_name = clean_name(File.basename(item, '.*')) + File.extname(item)
    puts "Renaming #{item} to #{new_name}"
    File.rename(item, new_name)
  end
end

if options[:directory].nil?
  puts 'You must supply a directory'
  exit
end

rename_files(options[:directory])