38ae064b8a
Sam Ruby has been doing a bang-up job fixing the bugs in REXML. Who knows when these improvements will trickle down to vendor distributions of Ruby. In the meantime, let's bundle the latest version of REXML with Instiki. We check the version number of the bundled REXML against that of the System REXML, and use whichever is later.
100 lines
3.5 KiB
Ruby
100 lines
3.5 KiB
Ruby
require 'rexml/validation/validationexception'
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require 'rexml/undefinednamespaceexception'
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module REXML
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module Parsers
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class TreeParser
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def initialize( source, build_context = Document.new )
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@build_context = build_context
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@parser = Parsers::BaseParser.new( source )
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end
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def add_listener( listener )
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@parser.add_listener( listener )
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end
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def parse
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tag_stack = []
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in_doctype = false
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entities = nil
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begin
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while true
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event = @parser.pull
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#STDERR.puts "TREEPARSER GOT #{event.inspect}"
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case event[0]
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when :end_document
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unless tag_stack.empty?
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#raise ParseException.new("No close tag for #{tag_stack.inspect}")
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raise ParseException.new("No close tag for #{@build_context.xpath}")
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end
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return
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when :start_element
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tag_stack.push(event[1])
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el = @build_context = @build_context.add_element( event[1] )
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event[2].each do |key, value|
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el.attributes[key]=Attribute.new(key,value,self)
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end
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when :end_element
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tag_stack.pop
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@build_context = @build_context.parent
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when :text
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if not in_doctype
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if @build_context[-1].instance_of? Text
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@build_context[-1] << event[1]
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else
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@build_context.add(
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Text.new(event[1], @build_context.whitespace, nil, true)
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) unless (
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@build_context.ignore_whitespace_nodes and
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event[1].strip.size==0
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)
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end
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end
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when :comment
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c = Comment.new( event[1] )
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@build_context.add( c )
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when :cdata
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c = CData.new( event[1] )
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@build_context.add( c )
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when :processing_instruction
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@build_context.add( Instruction.new( event[1], event[2] ) )
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when :end_doctype
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in_doctype = false
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entities.each { |k,v| entities[k] = @build_context.entities[k].value }
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@build_context = @build_context.parent
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when :start_doctype
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doctype = DocType.new( event[1..-1], @build_context )
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@build_context = doctype
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entities = {}
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in_doctype = true
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when :attlistdecl
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n = AttlistDecl.new( event[1..-1] )
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@build_context.add( n )
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when :externalentity
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n = ExternalEntity.new( event[1] )
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@build_context.add( n )
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when :elementdecl
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n = ElementDecl.new( event[1] )
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@build_context.add(n)
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when :entitydecl
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entities[ event[1] ] = event[2] unless event[2] =~ /PUBLIC|SYSTEM/
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@build_context.add(Entity.new(event))
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when :notationdecl
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n = NotationDecl.new( *event[1..-1] )
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@build_context.add( n )
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when :xmldecl
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x = XMLDecl.new( event[1], event[2], event[3] )
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@build_context.add( x )
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end
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end
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rescue REXML::Validation::ValidationException
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raise
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rescue REXML::UndefinedNamespaceException
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raise
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rescue
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raise ParseException.new( $!.message, @parser.source, @parser, $! )
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end
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end
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end
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end
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end
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