module OEmbed::Formatter::XML::Backends::Nokogiri

def decode(xml)
  obj = {}
  doc = ::Nokogiri::XML(xml) { |config| config.strict }
  doc.root.elements.each do |el|
    obj[el.name] = el.text
  end
  obj
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 nokogiri library you have installed isn't parsing XML like ruby-oembed expected."
end

def parse_error
  ::Nokogiri::XML::SyntaxError
end