This library provides a Ruby interface to Nmap’s scan data. It can run Nmap and parse its XML output directly from the scan, parse a file containing the XML data from a separate scan, or parse a string of XML data from a scan. This information is presented in an easy to use fashion for storing and manipulating.
You can download it from the following link: https://packetstormsecurity.com/files/download/62334/ruby-nmapparser-0.2.1.tgz
Source: https://packetstormsecurity.com/files/62334/ruby-nmapparser-0.2.1.tgz.html