1 files changed, 44 insertions, 0 deletions
diff --git a/lib/MarkdownBook/HTMLTree.pm b/lib/MarkdownBook/HTMLTree.pm
new file mode 100644
index 0000000..e01bab0
--- /dev/null
+++ b/lib/MarkdownBook/HTMLTree.pm
@@ -0,0 +1,44 @@
+# 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;