ultralightparser.rb [plain text]
require 'rexml/parsers/streamparser'
require 'rexml/parsers/baseparser'
module REXML
module Parsers
class UltraLightParser
def initialize stream
@stream = stream
@parser = REXML::Parsers::BaseParser.new( stream )
end
def add_listener( listener )
@parser.add_listener( listener )
end
def rewind
@stream.rewind
@parser.stream = @stream
end
def parse
root = context = []
while true
event = @parser.pull
case event[0]
when :end_document
break
when :end_doctype
context = context[1]
when :start_element, :doctype
context << event
event[1,0] = [context]
context = event
when :end_element
context = context[1]
else
context << event
end
end
root
end
end
end
end