HTML::Parser explicit calls for missing end tags

Gabor Szabo <[email protected]> Sun, 22 Aug 2010 16:25:25 +0300

Newsgroups	gmane.comp.lang.perl.modules.lwp
Message-ID	<[email protected]>

Hi,

I am not sure where to post this HTML::Parser related question but
this list seems to be close
and Gisle is frequent here (and the Perl Monks did not give me a
solution) so I hope you'll
forgive me:


Using HTML:Parser it is unclear to me how am I supposed to notice when
a tag - that's end tag is missing has indeed ended? It seems that in
some cases I get an explicit end event but in other cases I don't.

See the example code:

use strict;
use warnings;

use HTML::Parser ();

sub event_handler {
    my ($event, $elem) = @_;
    print "$event $elem\n";
}


my $p = HTML::Parser->new(api_version => 3);
$p->handler( start => \&event_handler, "event, tagname");
$p->handler( end   => \&event_handler, "event, tagname");
$p->parse('<head><title>abc</title></head>');
$p->eof;
print "----\n";
$p->parse('<head><title>abc</head>');
$p->eof;

print "----\n";
$p->parse('<ul><li>abc</li><li>def</ul>');
$p->eof;
exit;

The result of which is

start head
start title
end title
end head
----
start head
start title
end title
end head
----
start ul
start li
end li
start li
end ul

That is, the missing </title> tag explicitly generated and end-even
while the missing </li> did not.


regards
  Gabor