/**
* Translates a CSS expression to its XPath equivalent.
* Optionally, a prefix can be added to the resulting XPath
* expression with the $prefix parameter.
*
* @param mixed $cssExpr The CSS expression.
* @param string $prefix An optional prefix for the XPath expression.
*
* @return string
*
* @api
*/
public static function toXPath($cssExpr, $prefix = 'descendant-or-self::')
{
$translator = new Translator();
if (self::$html) {
$translator->registerExtension(new HtmlExtension($translator));
}
$translator->registerParserShortcut(new EmptyStringParser())->registerParserShortcut(new ElementParser())->registerParserShortcut(new ClassParser())->registerParserShortcut(new HashParser());
return $translator->cssToXPath($cssExpr, $prefix);
}
/** @dataProvider getHtmlShakespearTestData */
public function testHtmlShakespear($css, $count)
{
$translator = new Translator();
$translator->registerExtension(new HtmlExtension($translator));
$document = new \DOMDocument();
$document->strictErrorChecking = false;
$document->loadHTMLFile(__DIR__ . '/Fixtures/shakespear.html');
$document = simplexml_import_dom($document);
$bodies = $document->xpath('//body');
$elements = $bodies[0]->xpath($translator->cssToXPath($css));
$this->assertEquals($count, count($elements));
}
