File Coverage

blib/lib/XML/LibXML/QuerySelector.pm

Criterion	Covered	Total	%
statement	13	15	86.6
branch			n/a
condition			n/a
subroutine	5	5	100.0
pod			n/a
total	18	20	90.0

use 5.008;
use strict;
use utf8;

package XML::LibXML::QuerySelector;

use HTML::Selector::XPath 0.13 qw//;
use XML::LibXML 1.70 qw//;

BEGIN
{
	our $AUTHORITY = 'cpan:TOBYINK';
	our $VERSION   = '0.005';

	push @XML::LibXML::Document::ISA, __PACKAGE__;
	push @XML::LibXML::DocumentFragment::ISA, __PACKAGE__;
	push @XML::LibXML::Element::ISA, __PACKAGE__;
}

my $contains = sub
{
	my $self = shift;
	my ($node) = @_;
	my $self_path = $self->nodePath;
	my $node_path = $node->nodePath;
	my $sub_node_path = substr $node_path, 0, length $self_path;
	$sub_node_path eq $self_path;
};

sub querySelectorAll
{
	my $self = shift;
	my ($selector_string) = @_;
	my $selector = "HTML::Selector::XPath"->new($selector_string);

	my $document = $self->nodeName =~ /^#/ ? $self : $self->ownerDocument;
	my $nsuri    = $document->documentElement->lookupNamespaceURI('');

	my $xc = "XML::LibXML::XPathContext"->new($document);
	$xc->registerNs(defaultns => $nsuri) if $nsuri;

	my $xpath = defined $nsuri
		? $selector->to_xpath(prefix => 'defaultns')
		: $selector->to_xpath;

	if ($document == $self)
	{
		return $xc->findnodes($xpath);
	}

	my @results = map
		{ $self->$contains($_) ? ($_) : () }
		@{[ $xc->findnodes($xpath) ]};

	wantarray ? @results : "XML::LibXML::NodeList"->new(@results);
}

sub querySelector
{
	my $self = shift;
	my ($selector_string) = @_;
	my $results = $self->querySelectorAll($selector_string);
	return unless $results->size;
	$results->shift;
}

__FILE__
__END__