#!/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;
my $no_content = 0;

while( <STDIN> ) {

  /^Server: Apache(\/[0-9.]+)?/ && do {
    $_ = "";
  };

  /^X-Powered-By: PHP\/[0-9.]+/ && do {
    $_ = "";
  };

  /^X-Pad: avoid browser bug/ && do {
    $_ = "";
  };

  /^Keep-Alive:/ && do {
    $_ = "";
  };

  /^Connection:/ && do {
    $_ = "";
  };

  /^Transfer-Encoding:/ && do {
    $_ = "";
  };

  /^Vary: / && do {
    $_ = "";
  };

  /^X-(DAViCal|RSCDS)-Version: (DAViCal|RSCDS)\/[0-9.]+\.[0-9.]+\.[0-9.]+; DB\/[0-9.]+\.[0-9.]+\.[0-9.]+/ && do {
    $_ = "";
  };

  # HTTP Standard Dates
  s/(Mon|Tue|Wed|Thu|Fri|Sat|Sun), [0-3][0-9] (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) 2[0-9]{3} [0-2][0-9](:[0-5][0-9]){2} GMT/Dow, 01 Jan 2000 00:00:00 GMT/;

  # Fix up any opaquelocktokens to something regular
  s/opaquelocktoken:[[:xdigit:]]{8}-([[:xdigit:]]{4}-){3}[[:xdigit:]]{12}/opaquelocktoken:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/;

  /^HTTP\/1\.1 204 No Content/ && do {
    $no_content = 1;
  };
  /^Content-Length: 0/ && $no_content && do {
    $_ = "";
  };
  /^Content-Type: / && $no_content && do {
    $_ = "";
  };
  /^HTTP\/1\.1 100 Continue/ && do {
    my $swallow_next_line_as_well = <STDIN>;
    next;
  };

  /^Request-ID: / && do {
    $_ = "";
  };

  print;
}