晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/alt/ruby18/lib64/ruby/1.8/webrick/httpauth/
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Current File : //opt/alt/ruby18/lib64/ruby/1.8/webrick/httpauth/htgroup.rb
#
# httpauth/htgroup.rb -- Apache compatible htgroup file
#
# Author: IPR -- Internet Programming with Ruby -- writers
# Copyright (c) 2003 Internet Programming with Ruby writers. All rights
# reserved.
#
# $IPR: htgroup.rb,v 1.1 2003/02/16 22:22:56 gotoyuzo Exp $

require 'tempfile'

module WEBrick
  module HTTPAuth
    class Htgroup
      def initialize(path)
        @path = path
        @mtime = Time.at(0)
        @group = Hash.new
        open(@path,"a").close unless File::exist?(@path)
        reload
      end

      def reload
        if (mtime = File::mtime(@path)) > @mtime
          @group.clear
          open(@path){|io|
            while line = io.gets
              line.chomp!
              group, members = line.split(/:\s*/)
              @group[group] = members.split(/\s+/)
            end
          }
          @mtime = mtime
        end
      end

      def flush(output=nil)
        output ||= @path
        tmp = Tempfile.new("htgroup", File::dirname(output))
        begin
          @group.keys.sort.each{|group|
            tmp.puts(format("%s: %s", group, self.members(group).join(" ")))
          }
          tmp.close
          File::rename(tmp.path, output)
        rescue
          tmp.close(true)
        end
      end

      def members(group)
        reload
        @group[group] || []
      end

      def add(group, members)
        @group[group] = members(group) | members
      end
    end
  end
end