Recursively build a hash for directory listing

recursive-file-hash.rb

#!/usr/bin/env ruby

# Recursively build a hash for directory listing
def create_hash(path, name = nil)
  data = {:parent => (name || path)}
  data[:children] = children = []
  Dir.foreach(@path) do |entry|
    next if entry == '..' or entry == '.'
    full_path = File.join(path, entry)
    if File.directory?(full_path)
      children << create_hash(full_path, entry)
    else
      children << entry
    end
  end
  return data
end

@path = ARGV[0]
create_hash(@path)