HTML::Parser explicit calls for missing end tags

szabgab has asked for the wisdom of the Perl Monks concerning the following question:

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;
[download]

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
[download]

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

Comment on HTML::Parser explicit calls for missing end tags Select or Download Code

Replies are listed 'Best First'.
Re: HTML::Parser explicit calls for missing end tags by Anonymous Monk on Aug 20, 2010 at 10:10 UTC
closing li tag is optional , but this could be considered a bug .... you might want to look how HTML::TreeBuilder handles this	[reply]