made a command line program to query a pkg name and return back cves and also a way to list all the pkgs in the xml file

rpm_to_cve_parser/rpm_pkg_audit.rb

@@ -0,0 +1,34 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require 'optparse'
+require 'pry'
+require 'pp'
+require './rhel_rpm_to_cve'
+
+data_file = './rpm-to-cve.xml'
+
+options = {}
+
+parser = OptionParser.new do |parser|
+  parser.banner = 'Usage: rpm_pkg_audit.rb [options]'
+  parser.on('-p', '--pkg PKGNAME', 'The pkg name you want to audit.') do |pkg|
+    options[:pkg] = pkg
+  end
+  parser.on('-l', '--list', 'List packages in the XML datafile.') do |list|
+    options[:list] = list
+  end
+end
+
+parser.parse!
+
+pkg_name = options[:pkg]
+rpm_auditer = RhelRpmToCve.new(data_file)
+
+if rpm_auditer.pkg_exists?(pkg_name)
+  pp rpm_auditer.cves_per_pkg_name(pkg_name) 
+elsif options.key?(:list)
+  puts rpm_auditer.list_pkg_names
+else
+  puts 'Package not found.'
+end