* lib/rss/maker/*.rb: added RSS Maker.

* test/rss/test_maker_*.rb: added tests for RSS Maker.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7155 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rss/maker/1.0.rb

@@ -0,0 +1,184 @@
+require "rss/1.0"
+
+require "rss/maker/base"
+
+module RSS
+  module Maker
+
+    class RSS10 < RSSBase
+
+      def initialize
+        super("1.0")
+      end
+
+      def to_rss
+        rss = RDF.new(@version, @encoding, @standalone)
+        setup_xml_stylesheets(rss)
+        setup_channel(rss)
+        setup_image(rss)
+        setup_items(rss)
+        setup_textinput(rss)
+        setup_other_elements(rss)
+        if rss.channel
+          rss
+        else
+          nil
+        end
+      end
+
+      private
+      def setup_channel(rss)
+        @channel.to_rss(rss)
+      end
+
+      def setup_image(rss)
+        @image.to_rss(rss)
+      end
+
+      def setup_items(rss)
+        @items.to_rss(rss)
+      end
+
+      def setup_textinput(rss)
+        @textinput.to_rss(rss)
+      end
+
+      class Channel < ChannelBase
+
+        def to_rss(rss)
+          if @about
+            channel = RDF::Channel.new(@about)
+            set = setup_values(channel)
+            if set
+              rss.channel = channel
+              setup_items(rss)
+              setup_image(rss)
+              setup_textinput(rss)
+              setup_other_elements(rss)
+            end
+          end
+        end
+
+        def have_required_values?
+          @about and @title and @link and @description
+        end
+        
+        private
+        def setup_items(rss)
+          items = RDF::Channel::Items.new
+          seq = items.Seq
+          @maker.items.normalize.each do |item|
+            seq.lis << RDF::Channel::Items::Seq::Li.new(item.link)
+          end
+          rss.channel.items = items
+        end
+        
+        def setup_image(rss)
+          if @maker.image.have_required_values?
+            rss.channel.image = RDF::Channel::Image.new(@maker.image.url)
+          end
+        end
+
+        def setup_textinput(rss)
+          if @maker.textinput.have_required_values?
+            textinput = RDF::Channel::Textinput.new(@maker.textinput.link)
+            rss.channel.textinput = textinput
+          end
+        end
+
+        class Cloud < CloudBase
+        end
+      end
+
+      class Image < ImageBase
+        def to_rss(rss)
+          if @url
+            image = RDF::Image.new(@url)
+            set = setup_values(image)
+            if set
+              rss.image = image
+              setup_other_elements(rss)
+            end
+          end
+        end
+
+        def have_required_values?
+          @url and @title and link and @maker.channel.have_required_values?
+        end
+
+        private
+        def variables
+          super + ["link"]
+        end
+      end
+
+      class Items < ItemsBase
+        def to_rss(rss)
+          if rss.channel
+            normalize.each do |item|
+              item.to_rss(rss)
+            end
+            setup_other_elements(rss)
+          end
+        end
+
+        class Item < ItemBase
+          def to_rss(rss)
+            if @link
+              item = RDF::Item.new(@link)
+              set = setup_values(item)
+              if set
+                rss.items << item
+                setup_other_elements(rss)
+              end
+            end
+          end
+
+          def have_required_values?
+            @title and @link
+          end
+
+          class Guid < GuidBase
+            def to_rss(*args)
+            end
+          end
+        
+          class Enclosure < EnclosureBase
+            def to_rss(*args)
+            end
+          end
+        
+          class Source < SourceBase
+            def to_rss(*args)
+            end
+          end
+        
+          class Category < CategoryBase
+            def to_rss(*args)
+            end
+          end
+        end
+      end
+      
+      class Textinput < TextinputBase
+        def to_rss(rss)
+          if @link
+            textinput = RDF::Textinput.new(@link)
+            set = setup_values(textinput)
+            if set
+              rss.textinput = textinput
+              setup_other_elements(rss)
+            end
+          end
+        end
+
+        def have_required_values?
+          @title and @description and @name and @link and
+            @maker.channel.have_required_values?
+        end
+      end
+    end
+
+    add_maker(filename_to_version(__FILE__), RSS10)
+  end
+end