module REXML module Formatters class Default # Prints out the XML document with no formatting -- except if id_hack is # set. # # ie_hack:: # If set to true, then inserts whitespace before the close of an empty # tag, so that IE's bad XML parser doesn't choke. def initialize( ie_hack=false ) @ie_hack = ie_hack end # Writes the node to some output. # # node:: # The node to write # output:: # A class implementing <<. Pass in an Output object to # change the output encoding. def write( node, output ) case node when Document if node.xml_decl.encoding != 'UTF-8' && !output.kind_of?(Output) output = Output.new( output, node.xml_decl.encoding ) end write_document( node, output ) when Element write_element( node, output ) when Declaration, ElementDecl, NotationDecl, ExternalEntity, Entity, Attribute, AttlistDecl node.write( output,-1 ) when Instruction write_instruction( node, output ) when DocType, XMLDecl node.write( output ) when Comment write_comment( node, output ) when CData write_cdata( node, output ) when Text write_text( node, output ) else raise Exception.new("XML FORMATTING ERROR") end end protected def write_document( node, output ) node.children.each { |child| write( child, output ) } end def write_element( node, output ) output << "<#{node.expanded_name}" node.attributes.to_a.map { |a| Hash === a ? a.values : a }.flatten.sort_by {|attr| attr.name}.each do |attr| output << " " attr.write( output ) end unless node.attributes.empty? if node.children.empty? output << " " if @ie_hack output << "/" else output << ">" node.children.each { |child| write( child, output ) } output << "" end def write_text( node, output ) output << node.to_s() end def write_comment( node, output ) output << Comment::START output << node.to_s output << Comment::STOP end def write_cdata( node, output ) output << CData::START output << node.to_s output << CData::STOP end def write_instruction( node, output ) output << Instruction::START.sub(/\\/u, '') output << node.target output << ' ' output << node.content output << Instruction::STOP.sub(/\\/u, '') end end end end