x-perl-benchmark-xml-parsers

#!/usr/bin/env perl

package SAXY;

use XML::LibXML;
use XML::SAX::Base;
use base qw(XML::SAX::Base);

package main;

use strict;
use warnings;
use XML::LibXML;
use XML::Parser;
use Benchmark qw( cmpthese );

my $libxml = XML::LibXML->new();

my $sax_handler = SAXY->new;
my $libxml_sax = XML::LibXML->new(Handler => $sax_handler);

my $expat = XML::Parser->new(
  Handlers => {
    Start => sub {},
    End   => sub {},
    Char  => sub {},
  },
);

my $expat_no_hand = XML::Parser->new(
  Handlers => {
  },
);

my $expat_tree = XML::Parser->new( Style => 'Tree' );

my $stanza = q{
  <iq type="result" to="test" id="624-18" >
  <query xmlns="http://jabber.org/protocol/disco#info">
  <identity category="client" type="pc" name="Psi" />
  <feature var="http://jabber.org/protocol/bytestreams" />
  <feature var="http://jabber.org/protocol/si" />
  <feature var="http://jabber.org/protocol/si/profile/file-transfer" />
  <feature var="http://jabber.org/protocol/disco#info" />
  <feature var="http://jabber.org/protocol/commands" />
  <feature var="http://jabber.org/protocol/rosterx" />
  <feature var="http://jabber.org/protocol/muc" />
  <feature var="jabber:x:data" />
  <feature var="http://jabber.org/protocol/chatstates" />
  <feature var="http://jabber.org/protocol/mood+notify" />
  <feature var="http://jabber.org/protocol/tune+notify" />
  <feature var="http://jabber.org/protocol/physloc+notify" />
  <feature var="http://jabber.org/protocol/geoloc+notify" />
  <feature var="http://www.xmpp.org/extensions/xep-0084.html#ns-metadata+notify" />
  <feature var="http://jabber.org/protocol/xhtml-im" />
  </query>
  </iq>
};


my $count = $ENV{COUNT} || 1000;

cmpthese($count, {
    'LibXML' => sub {
      $libxml->parse_string($stanza);
    },
    'LibXML SAX' => sub {
      $libxml_sax->parse_string($stanza);
    },
    'Expat (Tree)'  => sub {
      $expat_tree->parse($stanza);
    },
    'Expat (SAX with handlers)'  => sub {
      $expat->parse($stanza);
    },
    'Expat (SAX, no handlers)'  => sub {
      $expat_no_hand->parse($stanza);
    },
});