module Nokogiri::XML::SAX::LegacyHandlers

def end_element_namespace name, prefix = nil, uri = nil
  ##
  # Deal with legacy interface
  if @document.respond_to? :end_element_ns
    unless @warned
      warn <<-eowarn
::XML::SAX::Document#start_element_ns and end_element_ns are deprecated,
hange to start_element_namespace.  start_element_ns will be removed by
1.4.0 or by August 1st, whichever comes first.
      eowarn
      @warned = true
    end
    @document.end_element_ns name, prefix, uri
  end
  ###
  # Deal with SAX v1 interface
  @document.end_element [prefix, name].compact.join(':')
end

def start_element_namespace name,
                            attrs   = [],
                            prefix  = nil,
                            uri     = nil,
                            ns      = []
  ##
  # Deal with legacy interface
  if @document.respond_to? :start_element_ns
    unless @warned
      warn <<-eowarn
::XML::SAX::Document#start_element_ns and end_element_ns are deprecated,
hange to start_element_namespace.  start_element_ns will be removed by
1.4.0 or by August 1st, whichever comes first.
      eowarn
      @warned = true
    end
    attr_hash = {}
    attrs.each do |attr|
      attr_hash[attr.localname] = attr.value
    end
    ns_hash = Hash[*ns.flatten]
    @document.start_element_ns name, attr_hash, prefix, uri, ns_hash
  end
  ###
  # Deal with SAX v1 interface
  name = [prefix, name].compact.join(':')
  attributes = ns.map { |ns_prefix,ns_uri|
    [['xmlns', ns_prefix].compact.join(':'), ns_uri]
  } + attrs.map { |attr|
    [[attr.prefix, attr.localname].compact.join(':'), attr.value]
  }.flatten
  @document.start_element name, attributes
end