* lib/rss: rss library imported. [ruby-dev:22726]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5566 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 97 insertions, 0 deletions

diff --git a/lib/rss/xmlscanner.rb b/lib/rss/xmlscanner.rb
new file mode 100644
index 0000000000..81dae96df5
--- /dev/null
+++ b/lib/rss/xmlscanner.rb
@@ -0,0 +1,97 @@
+require 'xmlscan/scanner'
+
+module RSS
+	
+	class Parser < BaseParser
+		
+		private
+		def _parse
+			begin
+				XMLScan::XMLScanner.new(@listener).parse(@rss)
+			rescue XMLScan::Error => e
+				raise NotWellFormedError.new(e.lineno){e.message}
+			end
+		end
+		
+	end
+
+	class Listener < BaseListener
+		
+		include XMLScan::Visitor
+		include ListenerMixin
+
+		ENTITIES = {
+			'lt' => '<',
+			'gt' => '>',
+			'amp' => '&',
+			'quot' => '"',
+			'apos' => '\''
+		}
+
+    def on_xmldecl_version(str)
+			@version = str
+    end
+
+    def on_xmldecl_encoding(str)
+			@encoding = str
+    end
+
+    def on_xmldecl_standalone(str)
+			@standalone = str
+    end
+
+    def on_xmldecl_end
+			xmldecl(@version, @encoding, @standalone)
+    end
+
+		alias_method(:on_chardata, :text)
+		alias_method(:on_cdata, :text)
+
+    def on_etag(name)
+      tag_end(name)
+    end
+
+    def on_entityref(ref)
+			text(ENTITIES[ref])
+    end
+
+    def on_charref(code)
+			text([code].pack('U'))
+    end
+
+		alias_method(:on_charref_hex, :on_charref)
+
+    def on_stag(name)
+			@attrs = {}
+    end
+
+    def on_attribute(name)
+			@attrs[name] = @current_attr = ''
+    end
+
+    def on_attr_value(str)
+			@current_attr << str
+    end
+
+    def on_attr_entityref(ref)
+			@current_attr << ENTITIES[ref]
+    end
+
+    def on_attr_charref(code)
+			@current_attr << [code].pack('U')
+    end
+
+		alias_method(:on_attr_charref_hex, :on_attr_charref)
+
+    def on_stag_end(name)
+			tag_start(name, @attrs)
+    end
+
+    def on_stag_end_empty(name)
+			tag_start(name, @attrs)
+			tag_end(name)
+    end
+
+	end
+
+end