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# 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, $_);
}
}
return @retlist;
}
sub each_text
{
my ($elem) = @_;
my $child = $elem;
my $root = $elem;
return _each_text_recursive($child, $root);
}
sub _each_text_recursive
{
my ($elem, $root) = @_;
my $child;
my @retlist = ();
foreach $child ($elem->content_list()) {
if (ref($_) eq 'HTML::Element') {
push(@retlist, _each_text_recursive($child, $root));
} else {
push(@retlist, $child);
}
}
return @retlist;
}
1;
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