dump_momd.rb

#!/usr/bin/env macruby -wKU

framework 'CoreData'

def dump_mom(mom_path, out)
  mom = NSManagedObjectModel.alloc.initWithContentsOfURL(mom_path)

  mom.entities.sort_by {|e| e.name}.each do |entity|
    out.puts "-" * 80
    out.puts entity.name
    entity.attributesByName.keys.sort.each do |k|
      v = entity.attributesByName[k]
      out.puts "\t#{k}"
      out.puts "\t\ttype=#{v.attributeType}"
      out.puts "\t\tdefault=#{v.defaultValue}"
      out.puts "\t\thash=#{v.versionHash.description}"
    end
  end
end

ARGV.each do |momd|
  mom_path = NSURL.fileURLWithPath(momd)
  puts mom_path.absoluteString
  dump_mom(mom_path, STDOUT)
end