krmbzds/qf

#!/usr/bin/env ruby
# encoding: UTF-8

lib = File.expand_path(File.dirname(__FILE__) + '/../lib')
$LOAD_PATH.unshift(lib) if File.directory?(lib) && !$LOAD_PATH.include?(lib)

require 'rules'

@help = '
  Usage: qf [filter]

  Options
   -h, --help       Prints this help page
   -l, --list       Lists available filters

  Examples
    qf url
    qf magnet
    qf creditcard
    qf ipv4

  This application uses standard input and output.

'

def parse_options
  arg = ARGV[0]

  if arg
    rule = Regexp.new RULES[arg]
    begin
      STDOUT.puts STDIN.read.scan(rule)
    rescue
      print_help
    end

  else
    print_help
  end
end

def print_help
  STDOUT.puts @help
end

parse_options