tests/uuidfilt.pl

   1 #! /usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5
   6 our %uuids;
   7 our $n_uuids = 0;
   8 sub lookup_uuid {
   9     my ($uuid) = @_;
  10     if (!exists($uuids{$uuid})) {
  11         $uuids{$uuid} = $n_uuids++;
  12     }
  13     return "<$uuids{$uuid}>";
  14 }
  15
  16 sub sort_set {
  17     my ($s) = @_;
  18     my (@uuids) = sort { $a <=> $b } (grep(/\d+/, split(/(\d+)/, $s)));
  19     return '["set",[' . join(',', map('["uuid","<' . $_ . '>"]', @uuids)) . ']]';
  20 }
  21
  22 my $u = '[0-9a-fA-F]';
  23 my $uuid_re = "${u}{8}-${u}{4}-${u}{4}-${u}{4}-${u}{12}";
  24 while (<>) {
  25     s/($uuid_re)/lookup_uuid($1)/eg;
  26
  27     # Sort sets like this:
  28     #    [["uuid","<1>"],["uuid","<0>"]]
  29     # to look like this:
  30     #    [["uuid","<0>"],["uuid","<1>"]]
  31     s/(\["set",\[(,?\["uuid","<\d+>"\])+\]\])/sort_set($1)/ge;
  32     print $_;
  33 }