�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\CssSelector\XPath; use Symfony\Component\CssSelector\Exception\ExpressionErrorException; use Symfony\Component\CssSelector\Node\FunctionNode; use Symfony\Component\CssSelector\Node\NodeInterface; use Symfony\Component\CssSelector\Node\SelectorNode; use Symfony\Component\CssSelector\Parser\Parser; use Symfony\Component\CssSelector\Parser\ParserInterface; /** * XPath expression translator interface. * * This component is a port of the Python cssselect library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon * * @internal */ class Translator implements TranslatorInterface { private $mainParser; /** * @var ParserInterface[] */ private $shortcutParsers = []; /** * @var Extension\ExtensionInterface[] */ private $extensions = []; private $nodeTranslators = []; private $combinationTranslators = []; private $functionTranslators = []; private $pseudoClassTranslators = []; private $attributeMatchingTranslators = []; public function __construct(ParserInterface $parser = null) { $this->mainParser = $parser ?? new Parser(); $this ->registerExtension(new Extension\NodeExtension()) ->registerExtension(new Extension\CombinationExtension()) ->registerExtension(new Extension\FunctionExtension()) ->registerExtension(new Extension\PseudoClassExtension()) ->registerExtension(new Extension\AttributeMatchingExtension()) ; } public static function getXpathLiteral(string $element): string { if (false === strpos($element, "'")) { return "'".$element."'"; } if (false === strpos($element, '"')) { return '"'.$element.'"'; } $string = $element; $parts = []; while (true) { if (false !== $pos = strpos($string, "'")) { $parts[] = sprintf("'%s'", substr($string, 0, $pos)); $parts[] = "\"'\""; $string = substr($string, $pos + 1); } else { $parts[] = "'$string'"; break; } } return sprintf('concat(%s)', implode(', ', $parts)); } /** * {@inheritdoc} */ public function cssToXPath(string $cssExpr, string $prefix = 'descendant-or-self::'): string { $selectors = $this->parseSelectors($cssExpr); /** @var SelectorNode $selector */ foreach ($selectors as $index => $selector) { if (null !== $selector->getPseudoElement()) { throw new ExpressionErrorException('Pseudo-elements are not supported.'); } $selectors[$index] = $this->selectorToXPath($selector, $prefix); } return implode(' | ', $selectors); } /** * {@inheritdoc} */ public function selectorToXPath(SelectorNode $selector, string $prefix = 'descendant-or-self::'): string { return ($prefix ?: '').$this->nodeToXPath($selector); } /** * @return $this */ public function registerExtension(Extension\ExtensionInterface $extension): self { $this->extensions[$extension->getName()] = $extension; $this->nodeTranslators = array_merge($this->nodeTranslators, $extension->getNodeTranslators()); $this->combinationTranslators = array_merge($this->combinationTranslators, $extension->getCombinationTranslators()); $this->functionTranslators = array_merge($this->functionTranslators, $extension->getFunctionTranslators()); $this->pseudoClassTranslators = array_merge($this->pseudoClassTranslators, $extension->getPseudoClassTranslators()); $this->attributeMatchingTranslators = array_merge($this->attributeMatchingTranslators, $extension->getAttributeMatchingTranslators()); return $this; } /** * @throws ExpressionErrorException */ public function getExtension(string $name): Extension\ExtensionInterface { if (!isset($this->extensions[$name])) { throw new ExpressionErrorException(sprintf('Extension "%s" not registered.', $name)); } return $this->extensions[$name]; } /** * @return $this */ public function registerParserShortcut(ParserInterface $shortcut): self { $this->shortcutParsers[] = $shortcut; return $this; } /** * @throws ExpressionErrorException */ public function nodeToXPath(NodeInterface $node): XPathExpr { if (!isset($this->nodeTranslators[$node->getNodeName()])) { throw new ExpressionErrorException(sprintf('Node "%s" not supported.', $node->getNodeName())); } return $this->nodeTranslators[$node->getNodeName()]($node, $this); } /** * @throws ExpressionErrorException */ public function addCombination(string $combiner, NodeInterface $xpath, NodeInterface $combinedXpath): XPathExpr { if (!isset($this->combinationTranslators[$combiner])) { throw new ExpressionErrorException(sprintf('Combiner "%s" not supported.', $combiner)); } return $this->combinationTranslators[$combiner]($this->nodeToXPath($xpath), $this->nodeToXPath($combinedXpath)); } /** * @throws ExpressionErrorException */ public function addFunction(XPathExpr $xpath, FunctionNode $function): XPathExpr { if (!isset($this->functionTranslators[$function->getName()])) { throw new ExpressionErrorException(sprintf('Function "%s" not supported.', $function->getName())); } return $this->functionTranslators[$function->getName()]($xpath, $function); } /** * @throws ExpressionErrorException */ public function addPseudoClass(XPathExpr $xpath, string $pseudoClass): XPathExpr { if (!isset($this->pseudoClassTranslators[$pseudoClass])) { throw new ExpressionErrorException(sprintf('Pseudo-class "%s" not supported.', $pseudoClass)); } return $this->pseudoClassTranslators[$pseudoClass]($xpath); } /** * @throws ExpressionErrorException */ public function addAttributeMatching(XPathExpr $xpath, string $operator, string $attribute, $value): XPathExpr { if (!isset($this->attributeMatchingTranslators[$operator])) { throw new ExpressionErrorException(sprintf('Attribute matcher operator "%s" not supported.', $operator)); } return $this->attributeMatchingTranslators[$operator]($xpath, $attribute, $value); } /** * @return SelectorNode[] */ private function parseSelectors(string $css): array { foreach ($this->shortcutParsers as $shortcut) { $tokens = $shortcut->parse($css); if (!empty($tokens)) { return $tokens; } } return $this->mainParser->parse($css); } }