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, parse a String of XML data from a scan, or parse XML data from an object via its read() method. This information is presented in an easy-to-use and intuitive fashion for storing and manipulating.
You can download it from the following link: https://packetstormsecurity.com/files/download/90227/ruby-nmap-parser-0.3.5.tgz
Source: https://packetstormsecurity.com/files/90227/Ruby-Nmap-Parser-Library-0.3.5.html