sub handle {
    my($self, $args) = @_;
    $args->{entry}->link =~ qr!^http://(?:[\w\-]+\.g|d)\.hatena\.ne\.jp/!;
}

sub extract {
    my($self, $args) = @_;

    my $link = URI->new($args->{entry}->link);
    my $path = $link->path;
       $path .= '#' . $link->fragment if $link->fragment;

    my $name     = ( $path =~ /\#([\w\-]+)$/ )[0];
    my $day_only = $path =~ m!^/[\w\-]+/\d+/?$!;

    my $match =
         $name     ? qq!<h3><a href=".*?" name="$name">.*?</h3>(.*?)</div>! :
         $day_only ? qq!<div class="section">(.*?)</div>! :
                     qq!</h3>(.*?)</div>!;

    if ( $args->{content} =~ /$match/s ){
        my $body = $1;
        $body =~ s!<p class="sectionfooter">.*?</p>!!;
        return "<div>$body</div>";
    }
    return;
}