module OEmbed::Formatter::XML::Backends::XmlSimple

def decode(xml)
  if !xml.respond_to?(:read)
    xml = StringIO.new(xml)
  end
  ::XmlSimple.xml_in(xml, 'ForceArray'=>false)
rescue
  case $!
  when parse_error
    raise $!
  else
    raise parse_error, "Couldn't parse the given document."
  end  
end

def decode_fail_msg
  "The version of the xml-simple library you have installed isn't parsing XML like ruby-oembed expected."
end

def parse_error
  ::ArgumentError
end