Sorry to be blunt, but if you can find the bug in the following regex, you can go ahead and parse HTML with regexes :)

$data =~ s/(<a\s(?:[^>](?!href))*href\s*)(&#61;\s*(&[^;]+;)?(?:.(?!\3))+(?:\3)?)([^>]+>)/$1.decode_entities($2).$4/gsei;

Otherwise, use a parser. It's more work to set up, but it's more likely to be correct.

use HTML::TokeParser::Simple;
my $html =<<'END_HTML';
<table width="200">
    <tr>
        <td>foo</td>
    </tr>
</table>
END_HTML

my $parser = HTML::TokeParser::Simple->new(\$html);
my $new_html = '';
while (my $token = $parser->get_token) {
    $new_html .= $token->is_start_tag('table')
        ? new_width_attribute($token)
        : $token->as_is;
}
print $new_html;

sub new_width_attribute {
    my $token = shift;
    my ( $attr, $attrseq ) = ($token->return_attr, $token->return_attr
+seq);
    $attr->{ width } = '300';
    my $tag = '';
    foreach ( @$attrseq ) {
        $tag .= qq{$_="$attr->{$_}"};
    }
    $tag = "<table $tag>";
    return $tag;
}

[download]

(This is such a common request that I need to push this into the module).

Cheers,
Ovid

New address of my CGI Course.
Silence is Evil (feel free to copy and distribute widely - note copyright text)

In reply to Re: Reg Ex Problem: Changing width dimension in HTML table by Ovid
in thread Reg Ex Problem: Changing width dimension in HTML table by nysus

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