#!/usr/bin/perl

use HTML::TreeBuilder;

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

if (@ARGV) {
	$tree->parse_file($ARGV[0]);
}
else {
	$tree->parse(\*STDIN);
}

output($tree);

sub output {
	my @tags = @_;
	foreach my $tag (@tags) {
		if (ref($tag)) {
			print "(", $tag->tag, "\n";
			my @attrs = $tag->all_attr();
			while(@attrs) {
				my ($key, $val) = (shift(@attrs), shift(@attrs));
				next if substr($key, 0, 1) eq '_';
				print "A$key $val\n";
			}
			output($tag->content_list);
			print ")", $tag->tag, "\n";
		}
		else {
			$tag =~ s/\r?\n/\\n/g;
			print "-", $tag, "\n";
		}
	}
}