#!/usr/bin/perl -w
#
# Given a result on stdin, try and normalise some
# elements of it (such as HTTP Header dates) so that we can
# simply compare it with other results
#

use strict;

while( <STDIN> ) {
  /^Date: [SMTWF][a-z]{2}, [0-9]{1,2} [JFMAJSOND][a-z]+ 20[0-9]{2} [012][0-9]:[0-5][0-9]:[0-5][0-9] GMT\r$/ && do {
    $_ = "Date: Dow, 01 Jan 2000 00:00:00 GMT\r\n";
  };

  print;
}