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#!/usr/bin/perl
package IkiWiki::Plugin::htmlbalance;
# htmlbalance: Parse and re-serialize HTML to ensure balanced tags
#
# Copyright 2008 Simon McVittie <http://smcv.pseudorandom.co.uk/>
# Licensed under the GNU GPL, version 2, or any later version published by the
# Free Software Foundation
use warnings;
use strict;
use IkiWiki 3.00;
use HTML::Entities;
sub import {
hook(type => "getsetup", id => "htmlbalance", call => \&getsetup);
hook(type => "sanitize", id => "htmlbalance", call => \&sanitize);
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => undef,
},
}
sub sanitize (@) {
my %params=@_;
my $ret = '';
eval q{use HTML::TreeBuilder};
error $@ if $@;
my $tree = HTML::TreeBuilder->new();
$tree->ignore_unknown(0);
$tree->ignore_ignorable_whitespace(0);
$tree->no_space_compacting(1);
$tree->p_strict(1);
$tree->store_comments(0);
$tree->store_declarations(0);
$tree->store_pis(0);
$tree->parse_content($params{content});
my @nodes = $tree->disembowel();
foreach my $node (@nodes) {
if (ref $node) {
$ret .= $node->as_HTML(undef, '', {});
chomp $ret;
$node->delete();
}
else {
$ret .= encode_entities($node);
}
}
$tree->delete();
return $ret;
}
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