set_dir_list(req, res) private

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# File lib/webrick/httpservlet/filehandler.rb, line 391
      def set_dir_list(req, res)
        redirect_to_directory_uri(req, res)
        unless @options[:FancyIndexing]
          raise HTTPStatus::Forbidden, "no access permission to `#{req.path}'"
        end
        local_path = res.filename
        list = Dir::entries(local_path).collect{|name|
          next if name == "." || name == ".."
          next if nondisclosure_name?(name)
          next if windows_ambiguous_name?(name)
          st = (File::stat(File.join(local_path, name)) rescue nil)
          if st.nil?
            [ name, nil, -1 ]
          elsif st.directory?
            [ name + "/", st.mtime, -1 ]
          else
            [ name, st.mtime, st.size ]
          end
        }
        list.compact!

        if    d0 = req.query["N"]; idx = 0
        elsif d0 = req.query["M"]; idx = 1
        elsif d0 = req.query["S"]; idx = 2
        else  d0 = "A"           ; idx = 0
        end
        d1 = (d0 == "A") ? "D" : "A"

        if d0 == "A"
          list.sort!{|a,b| a[idx] <=> b[idx] }
        else
          list.sort!{|a,b| b[idx] <=> a[idx] }
        end

        res['content-type'] = "text/html"

        res.body = <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><HTML>  <HEAD><TITLE>Index of #{HTMLUtils::escape(req.path)}</TITLE></HEAD>  <BODY>    <H1>Index of #{HTMLUtils::escape(req.path)}</H1>

        res.body << "<PRE>\n"
        res.body << " <A HREF=\"?N=#{d1}\">Name</A>                          "
        res.body << "<A HREF=\"?M=#{d1}\">Last modified</A>         "
        res.body << "<A HREF=\"?S=#{d1}\">Size</A>\n"
        res.body << "<HR>\n"

        list.unshift [ "..", File::mtime(local_path+"/.."), -1 ]
        list.each{ |name, time, size|
          if name == ".."
            dname = "Parent Directory"
          elsif name.bytesize > 25
            dname = name.sub(/^(.{23})(?:.*)/, '\1..')
          else
            dname = name
          end
          s =  " <A HREF=\"#{HTTPUtils::escape(name)}\">#{HTMLUtils::escape(dname)}</A>"
          s << " " * (30 - dname.bytesize)
          s << (time ? time.strftime("%Y/%m/%d %H:%M      ") : " " * 22)
          s << (size >= 0 ? size.to_s : "-") << "\n"
          res.body << s
        }
        res.body << "</PRE><HR>"

        res.body <<     <ADDRESS>     #{HTMLUtils::escape(@config[:ServerSoftware])}<BR>     at #{req.host}:#{req.port}    </ADDRESS>  </BODY></HTML>
      end
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