# Copyright (C) 2012 Patrick "P. J." McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

use strict;
use warnings;

use HTML::Element;

package MarkdownBook::HTMLTree;

sub find_elements_by_tag_names
{
	my ($elem, @tagnames) = @_;

	my @list = $elem->content_list();
	my $tag;
	my @retlist = ();

	foreach (@list) {
		if (ref($_) ne 'HTML::Element') {
			next;
		}
		$tag = $_->tag();
		if (grep($_ eq $tag, @tagnames)) {
			push(@retlist, $_);
		}
	}

	return @retlist;
}

1;