* lib/rss.rb, lib/rss/, test/rss/, sample/rss/: merged from trunk.

- 0.1.6 -> 2.0.0.
  - fixed image module URI. Thanks to Dmitry Borodaenko.
  - supported Atom.
  - supported ITunes module.
  - supported Slash module.

* NEWS: added an entry for RSS Parser.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@13747 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rss/xml.rb

@@ -0,0 +1,71 @@
+require "rss/utils"
+
+module RSS
+  module XML
+    class Element
+      include Enumerable
+
+      attr_reader :name, :prefix, :uri, :attributes, :children
+      def initialize(name, prefix=nil, uri=nil, attributes={}, children=[])
+        @name = name
+        @prefix = prefix
+        @uri = uri
+        @attributes = attributes
+        if children.is_a?(String) or !children.respond_to?(:each)
+          @children = [children]
+        else
+          @children = children
+        end
+      end
+
+      def [](name)
+        @attributes[name]
+      end
+
+      def []=(name, value)
+        @attributes[name] = value
+      end
+
+      def <<(child)
+        @children << child
+      end
+
+      def each(&block)
+        @children.each(&block)
+      end
+
+      def ==(other)
+        other.kind_of?(self.class) and
+          @name == other.name and
+          @uri == other.uri and
+          @attributes == other.attributes and
+          @children == other.children
+      end
+
+      def to_s
+        rv = "<#{full_name}"
+        attributes.each do |key, value|
+          rv << " #{Utils.html_escape(key)}=\"#{Utils.html_escape(value)}\""
+        end
+        if children.empty?
+          rv << "/>"
+        else
+          rv << ">"
+          children.each do |child|
+            rv << child.to_s
+          end
+          rv << "</#{full_name}>"
+        end
+        rv
+      end
+
+      def full_name
+        if @prefix
+          "#{@prefix}:#{@name}"
+        else
+          @name
+        end
+      end
+    end
+  end
+end