HTML::Treebuilder is a good answer. It is pretty tolerant of missing close tags and can generate nice HTML output if you ask it nicely. You may also be interested in HTML::Lint which parses HTML and generates an error report.

use strict;
use warnings;
use HTML::TreeBuilder;
use HTML::Lint;

my $html = do {local $/; (<DATA>)};

my $lint = HTML::Lint->new (only_types => HTML::Lint::Error::STRUCTURE
+);

$lint->parse ($html);
$lint->eof ();

print "HTML::Lint report:\n";
print join "\n", map {$_->as_string ()} $lint->errors ();

my $tree = HTML::TreeBuilder->new ();

$tree->parse ($html);
$tree->eof ();

print "\n\nTreeBuilder cleaned up HTML\n";
print $tree->as_HTML ();

__DATA__
<p><b><i>test</b></p>

[download]

Prints:

HTML::Lint report:
 (1:14) <i> at (1:7) is never closed
 (1:18) <body> tag is required
 (1:18) <head> tag is required
 (1:18) <html> tag is required
 (1:18) <title> tag is required

TreeBuilder cleaned up HTML
<html><head></head><body><p><b><i>test</i></b></body></html>

[download]
DWIM is Perl's answer to Gödel

In reply to Re: Ensuring HTML is "balanced" by GrandFather
in thread Ensuring HTML is "balanced" by skx

Title:
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