execute (TZInfo::TZDataParser)

    # File lib/tzinfo/tzdataparser.rb, line 75
        def execute
          Dir.foreach(@input_dir) {|file|
            load_rules(file) if file =~ /^[^\.]+$/
          }

          Dir.foreach(@input_dir) {|file|
            load_zones(file) if file =~ /^[^\.]+$/
          }

          Dir.foreach(@input_dir) {|file|
            load_links(file) if file =~ /^[^\.]+$/
          }

          load_countries

          if @generate_zones
            modules = []

            if @only_zones.nil? || @only_zones.empty?
              @zones.each_value {|zone|
                zone.write_module(@output_dir) unless @exclude_zones.include?(zone.name)
              }
            else
              @only_zones.each {|id|
                zone = @zones[id]
                zone.write_module(@output_dir)
              }
            end

            write_timezones_index
          end

          if @generate_countries
            write_countries_index
          end
        end