It parses msn old xml format log and converts it to general txt format.

msn_xml_log_converter.rb

require 'nokogiri'

def convert
  name = '/home/benjamin/Downloads/msn_file_name.xml'
  File.open('/home/benjamin/Downloads/result.txt', 'w+') do |f|
    doc = Nokogiri::XML(File.read(name))
    doc.xpath('//Message').each do |message|
      from = message.at_xpath('From/User/@FriendlyName')
      to = message.at_xpath('To/User/@FriendlyName')
      content = message.at_xpath('Text').content
      datetime = DateTime.parse(message.at_xpath('@DateTime')).localtime

      f.write "[#{datetime.localtime}] #{from}:\t#{content}\n"
    end
  end
end