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# frozen_string_literal: false require "rexml/parent" require "rexml/parseexception" require "rexml/namespace" require 'rexml/entity' require 'rexml/attlistdecl' require 'rexml/xmltokens' module REXML # Represents an XML DOCTYPE declaration; that is, the contents of <!DOCTYPE # ... >. DOCTYPES can be used to declare the DTD of a document, as well as # being used to declare entities used in the document. class DocType < Parent include XMLTokens START = "<!DOCTYPE" STOP = ">" SYSTEM = "SYSTEM" PUBLIC = "PUBLIC" DEFAULT_ENTITIES = { 'gt'=>EntityConst::GT, 'lt'=>EntityConst::LT, 'quot'=>EntityConst::QUOT, "apos"=>EntityConst::APOS } # name is the name of the doctype # external_id is the referenced DTD, if given attr_reader :name, :external_id, :entities, :namespaces # Constructor # # dt = DocType.new( 'foo', '-//I/Hate/External/IDs' ) # # <!DOCTYPE foo '-//I/Hate/External/IDs'> # dt = DocType.new( doctype_to_clone ) # # Incomplete. Shallow clone of doctype # # +Note+ that the constructor: # # Doctype.new( Source.new( "<!DOCTYPE foo 'bar'>" ) ) # # is _deprecated_. Do not use it. It will probably disappear. def initialize( first, parent=nil ) @entities = DEFAULT_ENTITIES @long_name = @uri = nil if first.kind_of? String super() @name = first @external_id = parent elsif first.kind_of? DocType super( parent ) @name = first.name @external_id = first.external_id elsif first.kind_of? Array super( parent ) @name = first[0] @external_id = first[1] @long_name = first[2] @uri = first[3] elsif first.kind_of? Source super( parent ) parser = Parsers::BaseParser.new( first ) event = parser.pull if event[0] == :start_doctype @name, @external_id, @long_name, @uri, = event[1..-1] end else super() end end def node_type :doctype end def attributes_of element rv = [] each do |child| child.each do |key,val| rv << Attribute.new(key,val) end if child.kind_of? AttlistDecl and child.element_name == element end rv end def attribute_of element, attribute att_decl = find do |child| child.kind_of? AttlistDecl and child.element_name == element and child.include? attribute end return nil unless att_decl att_decl[attribute] end def clone DocType.new self end # output:: # Where to write the string # indent:: # An integer. If -1, no indentation will be used; otherwise, the # indentation will be this number of spaces, and children will be # indented an additional amount. # transitive:: # Ignored # ie_hack:: # Ignored def write( output, indent=0, transitive=false, ie_hack=false ) f = REXML::Formatters::Default.new indent( output, indent ) output << START output << ' ' output << @name output << " #@external_id" if @external_id output << " #{@long_name.inspect}" if @long_name output << " #{@uri.inspect}" if @uri unless @children.empty? output << ' [' @children.each { |child| output << "\n" f.write( child, output ) } output << "\n]" end output << STOP end def context @parent.context end def entity( name ) @entities[name].unnormalized if @entities[name] end def add child super(child) @entities = DEFAULT_ENTITIES.clone if @entities == DEFAULT_ENTITIES @entities[ child.name ] = child if child.kind_of? Entity end # This method retrieves the public identifier identifying the document's # DTD. # # Method contributed by Henrik Martensson def public case @external_id when "SYSTEM" nil when "PUBLIC" strip_quotes(@long_name) end end # This method retrieves the system identifier identifying the document's DTD # # Method contributed by Henrik Martensson def system case @external_id when "SYSTEM" strip_quotes(@long_name) when "PUBLIC" @uri.kind_of?(String) ? strip_quotes(@uri) : nil end end # This method returns a list of notations that have been declared in the # _internal_ DTD subset. Notations in the external DTD subset are not # listed. # # Method contributed by Henrik Martensson def notations children().select {|node| node.kind_of?(REXML::NotationDecl)} end # Retrieves a named notation. Only notations declared in the internal # DTD subset can be retrieved. # # Method contributed by Henrik Martensson def notation(name) notations.find { |notation_decl| notation_decl.name == name } end private # Method contributed by Henrik Martensson def strip_quotes(quoted_string) quoted_string =~ /^[\'\"].*[\'\"]$/ ? quoted_string[1, quoted_string.length-2] : quoted_string end end # We don't really handle any of these since we're not a validating # parser, so we can be pretty dumb about them. All we need to be able # to do is spew them back out on a write() # This is an abstract class. You never use this directly; it serves as a # parent class for the specific declarations. class Declaration < Child def initialize src super() @string = src end def to_s @string+'>' end # == DEPRECATED # See REXML::Formatters # def write( output, indent ) output << to_s end end public class ElementDecl < Declaration def initialize( src ) super end end class ExternalEntity < Child def initialize( src ) super() @entity = src end def to_s @entity end def write( output, indent ) output << @entity end end class NotationDecl < Child attr_accessor :public, :system def initialize name, middle, pub, sys super(nil) @name = name @middle = middle @public = pub @system = sys end def to_s notation = "<!NOTATION #{@name} #{@middle}" notation << " #{@public.inspect}" if @public notation << " #{@system.inspect}" if @system notation << ">" notation end def write( output, indent=-1 ) output << to_s end # This method retrieves the name of the notation. # # Method contributed by Henrik Martensson def name @name end end end
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