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<?php
declare(strict_types=1);
namespace voku\helper;
use Symfony\Component\CssSelector\CssSelectorConverter;
class SelectorConverter
{
/**
* @var string[]
*
* @phpstan-var array<string,string>
*/
protected static $compiled = [];
/**
* @param string $selector
* @param bool $ignoreCssSelectorErrors
* <p>
* Ignore css selector errors and use the $selector as it is on error,
* so that you can also use xPath selectors.
* </p>
* @param bool $isForHtml
*
* @return string
*/
public static function toXPath(string $selector, bool $ignoreCssSelectorErrors = false, bool $isForHtml = true)
{
if (isset(self::$compiled[$selector])) {
return self::$compiled[$selector];
}
// Select DOMText
if ($selector === 'text') {
return '//text()';
}
// Select DOMComment
if ($selector === 'comment') {
return '//comment()';
}
if (\strpos($selector, '//') === 0) {
return $selector;
}
if (!\class_exists(CssSelectorConverter::class)) {
throw new \RuntimeException('Unable to filter with a CSS selector as the Symfony CssSelector 2.8+ is not installed (you can use filterXPath instead).');
}
$converterKey = '-' . $isForHtml . '-' . $ignoreCssSelectorErrors . '-';
static $converterArray = [];
if (!isset($converterArray[$converterKey])) {
$converterArray[$converterKey] = new CssSelectorConverter($isForHtml);
}
$converter = $converterArray[$converterKey];
assert($converter instanceof CssSelectorConverter);
if ($ignoreCssSelectorErrors) {
try {
$xPathQuery = $converter->toXPath($selector);
} catch (\Exception $e) {
$xPathQuery = $selector;
}
} else {
$xPathQuery = $converter->toXPath($selector);
}
self::$compiled[$selector] = $xPathQuery;
return $xPathQuery;
}
}