namespace :db do

namespace :diagrams do

  desc "Generate DB diagrams and convert to PS with Graphviz"
  task :ps => 'db:diagrams' do
    ModalDiagrams.parameters.output_tools.each do |cmd|
      out_dir = Rails.root.join("db/diagrams/#{cmd}_ps")
      mkdir_p out_dir
      Dir[Rails.root.join('db/diagrams/*.dot')].each do |fn|
        fn = Pathname(fn)
        out_fn = out_dir.join(fn.basename.sub_ext('.ps'))
        `#{cmd} '#{fn}' -o '#{out_fn}' -Tps2`
      end
      puts "Output has been generated in #{out_dir}"
    end
  end

end

end