use HTML::TokeParser;

my $count = 0;
my $parsee = HTML::TokeParser->new('test.html')
    or die "couldn't open test.html: $!";
while (my $tag = $parsee->get_tag('a')) {
    $count++ if $tag->[1]{href} =~ m{(http|ftp)://}i;
}
print "There are $count links in this file.\n";