A simple Ruby argument parsing loop.

argparse.rb

#!/usr/bin/env ruby

if ARGV.empty?
    puts "No arguments provided."
end

until ARGV.empty? do
    case ARGV[0]
        when '-q'
            ARGV.shift
            value = ARGV[0]
            puts "-q = #{value}"
            ARGV.shift
        when /-h|--help/
            puts "Help"
            ARGV.shift
        else
            puts 'Stopping'
            break
    end
end