#!/usr/bin/env ruby
# vim: set et sw=2 ts=2:

require 'rubygems'
require 'file/tail'
require 'state'



class Filter
    include State
end



filter = Filter.new()
filename = ARGV.pop or fail "Usage: #$0 number filename"
number = (ARGV.pop || 0).to_i.abs

File::Tail::Logfile.open(filename) do |log|
  log.backward(number).tail { |line|
  filter.hash.clear
  filter.action.clear
  filter.chkurg(line)
   case filter.hash[:alarm]
     when 'testurgent'
        puts filter.hash[:action].to_a[0]
        puts "urgent: #{line}"
     when 'reject'
       puts "reject: #{line}"
       next
     else
       puts "mail: #{line}"
   end
  }
end