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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sh-3ll 1.0
DIR:/opt/alt/ruby22/lib64/ruby/2.2.0/rss/maker/
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Current File : //opt/alt/ruby22/lib64/ruby/2.2.0/rss/maker/entry.rb
require "rss/maker/atom"
require "rss/maker/feed"

module RSS
  module Maker
    module Atom
      class Entry < RSSBase
        def initialize(feed_version="1.0")
          super
          @feed_type = "atom"
          @feed_subtype = "entry"
        end

        private
        def make_feed
          ::RSS::Atom::Entry.new(@version, @encoding, @standalone)
        end

        def setup_elements(entry)
          setup_items(entry)
        end

        class Channel < ChannelBase
          class SkipDays < SkipDaysBase
            class Day < DayBase
            end
          end

          class SkipHours < SkipHoursBase
            class Hour < HourBase
            end
          end

          class Cloud < CloudBase
          end

          Categories = Feed::Channel::Categories
          Links = Feed::Channel::Links
          Authors = Feed::Channel::Authors
          Contributors = Feed::Channel::Contributors

          class Generator < GeneratorBase
            include AtomGenerator

            def self.not_set_name
              "maker.channel.generator"
            end
          end

          Copyright = Feed::Channel::Copyright

          class Description < DescriptionBase
          end

          Title = Feed::Channel::Title
        end

        class Image < ImageBase
        end

        class Items < ItemsBase
          def to_feed(entry)
            (normalize.first || Item.new(@maker)).to_feed(entry)
          end

          class Item < ItemBase
            def to_feed(entry)
              set_default_values do
                setup_values(entry)
                entry.dc_dates.clear
                setup_other_elements(entry)
                unless have_required_values?
                  raise NotSetError.new("maker.item", not_set_required_variables)
                end
              end
            end

            private
            def required_variable_names
              %w(id updated)
            end

            def variables
              super + ["updated"]
            end

            def variable_is_set?
              super or !authors.empty?
            end

            def not_set_required_variables
              set_default_values do
                vars = super
                if authors.all? {|author| !author.have_required_values?}
                  vars << "author"
                end
                vars << "title" unless title {|t| t.have_required_values?}
                vars
              end
            end

            def _set_default_values
              keep = {
                :authors => authors.to_a.dup,
                :contributors => contributors.to_a.dup,
                :categories => categories.to_a.dup,
                :id => id,
                :links => links.to_a.dup,
                :rights => @rights,
                :title => @title,
                :updated => updated,
              }
              authors.replace(@maker.channel.authors) if keep[:authors].empty?
              if keep[:contributors].empty?
                contributors.replace(@maker.channel.contributors)
              end
              if keep[:categories].empty?
                categories.replace(@maker.channel.categories)
              end
              self.id ||= link || @maker.channel.id
              links.replace(@maker.channel.links) if keep[:links].empty?
              unless keep[:rights].variable_is_set?
                @maker.channel.rights {|r| @rights = r}
              end
              unless keep[:title].variable_is_set?
                @maker.channel.title {|t| @title = t}
              end
              self.updated ||= @maker.channel.updated
              super
            ensure
              authors.replace(keep[:authors])
              contributors.replace(keep[:contributors])
              categories.replace(keep[:categories])
              links.replace(keep[:links])
              self.id = keep[:id]
              @rights = keep[:rights]
              @title = keep[:title]
              self.updated = keep[:updated]
            end

            Guid = Feed::Items::Item::Guid
            Enclosure = Feed::Items::Item::Enclosure
            Source = Feed::Items::Item::Source
            Categories = Feed::Items::Item::Categories
            Authors = Feed::Items::Item::Authors
            Contributors = Feed::Items::Item::Contributors
            Links = Feed::Items::Item::Links
            Rights = Feed::Items::Item::Rights
            Description = Feed::Items::Item::Description
            Title = Feed::Items::Item::Title
            Content = Feed::Items::Item::Content
          end
        end

        class Textinput < TextinputBase
        end
      end
    end

    add_maker("atom:entry", "1.0", Atom::Entry)
    add_maker("atom1.0:entry", "1.0", Atom::Entry)
  end
end