Initial revision

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3925 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 72 insertions, 0 deletions

diff --git a/lib/rexml/xmldecl.rb b/lib/rexml/xmldecl.rb
new file mode 100644
index 0000000000..6a6cc31a53
--- /dev/null
+++ b/lib/rexml/xmldecl.rb
@@ -0,0 +1,72 @@
+require 'rexml/encoding'
+require 'rexml/source'
+
+module REXML
+	# NEEDS DOCUMENTATION
+	class XMLDecl < Child
+		include Encoding
+
+		DEFAULT_VERSION = "1.0";
+		DEFAULT_ENCODING = "UTF-8";
+		DEFAULT_STANDALONE = "no";
+		START = '<\?xml';
+		STOP = '\?>';
+
+		attr_accessor :version, :standalone
+
+		def initialize(version=DEFAULT_VERSION, encoding=nil, standalone=nil)
+			@encoding_set = !encoding.nil?
+			if version.kind_of? XMLDecl
+				super()
+				@version = version.version
+				self.encoding = version.encoding
+				@standalone = version.standalone
+			else
+				super()
+				@version = version
+				self.encoding = encoding
+				@standalone = standalone
+			end
+			@version = DEFAULT_VERSION if @version.nil?
+		end
+
+		def clone
+			XMLDecl.new(self)
+		end
+
+		def write writer, indent=-1, transitive=false, ie_hack=false
+			indent( writer, indent )
+			writer << START.sub(/\\/u, '')
+			writer << " #{content}"
+			writer << STOP.sub(/\\/u, '')
+		end
+
+		def ==( other )
+		  other.kind_of?(XMLDecl) and
+		  other.version == @version and
+		  other.encoding == self.encoding and
+		  other.standalone == @standalone
+		end
+
+		def xmldecl version, encoding, standalone
+			@version = version
+			@encoding_set = !encoding.nil?
+			self.encoding = encoding
+			@standalone = standalone
+		end
+
+		def node_type
+			:xmldecl
+		end
+
+		alias :stand_alone? :standalone
+
+		private
+		def content
+			rv = "version='#@version'"
+			rv << " encoding='#{encoding}'" if @encoding_set
+			rv << " standalone='#@standalone'" if @standalone
+			rv
+		end
+	end
+end