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📁 ..	-	2025-05-25 12:37
📁 Extension	-	2025-05-25 12:37
📄 Translator.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * 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 cssselector library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> / class Translator implements TranslatorInterface { /* * @var ParserInterface / private $mainParser; /* * @var ParserInterface[] / private $shortcutParsers = array(); /* * @var Extension\ExtensionInterface / private $extensions = array(); /* * @var array / private $nodeTranslators = array(); /* * @var array / private $combinationTranslators = array(); /* * @var array / private $functionTranslators = array(); /* * @var array / private $pseudoClassTranslators = array(); /* * @var array / private $attributeMatchingTranslators = array(); /* * Constructor. / public function __construct(ParserInterface $parser = null) { $this->mainParser = $parser ?: new Parser(); $this ->registerExtension(new Extension\NodeExtension($this)) ->registerExtension(new Extension\CombinationExtension()) ->registerExtension(new Extension\FunctionExtension()) ->registerExtension(new Extension\PseudoClassExtension()) ->registerExtension(new Extension\AttributeMatchingExtension()) ; } /* * @param string $element * * @return string / public static function getXpathLiteral($element) { if (false === strpos($element, "'")) { return "'".$element."'"; } if (false === strpos($element, '"')) { return '"'.$element.'"'; } $string = $element; $parts = array(); 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($parts, ', ')); } /* * {@inheritdoc} / public function cssToXPath($cssExpr, $prefix = 'descendant-or-self::') { $selectors = $this->parseSelectors($cssExpr); /* @var SelectorNode $selector / foreach ($selectors as $selector) { if (null !== $selector->getPseudoElement()) { throw new ExpressionErrorException('Pseudo-elements are not supported.'); } } $translator = $this; return implode(' \| ', array_map(function (SelectorNode $selector) use ($translator, $prefix) { return $translator->selectorToXPath($selector, $prefix); }, $selectors)); } /* * {@inheritdoc} / public function selectorToXPath(SelectorNode $selector, $prefix = 'descendant-or-self::') { return ($prefix ?: '').$this->nodeToXPath($selector); } /* * Registers an extension. * * @param Extension\ExtensionInterface $extension * * @return Translator / public function registerExtension(Extension\ExtensionInterface $extension) { $this->extensions[$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; } /* * @param string $name * * @return Extension\ExtensionInterface * * @throws ExpressionErrorException / public function getExtension($name) { if (!isset($this->extensions[$name])) { throw new ExpressionErrorException(sprintf('Extension "%s" not registered.', $name)); } return $this->extensions[$name]; } /* * Registers a shortcut parser. * * @param ParserInterface $shortcut * * @return Translator / public function registerParserShortcut(ParserInterface $shortcut) { $this->shortcutParsers[] = $shortcut; return $this; } /* * @param NodeInterface $node * * @return XPathExpr * * @throws ExpressionErrorException / public function nodeToXPath(NodeInterface $node) { if (!isset($this->nodeTranslators[$node->getNodeName()])) { throw new ExpressionErrorException(sprintf('Node "%s" not supported.', $node->getNodeName())); } return call_user_func($this->nodeTranslators[$node->getNodeName()], $node); } /* * @param string $combiner * @param NodeInterface $xpath * @param NodeInterface $combinedXpath * * @return XPathExpr * * @throws ExpressionErrorException / public function addCombination($combiner, NodeInterface $xpath, NodeInterface $combinedXpath) { if (!isset($this->combinationTranslators[$combiner])) { throw new ExpressionErrorException(sprintf('Combiner "%s" not supported.', $combiner)); } return call_user_func($this->combinationTranslators[$combiner], $this->nodeToXPath($xpath), $this->nodeToXPath($combinedXpath)); } /* * @param XPathExpr $xpath * @param FunctionNode $function * * @return XPathExpr * * @throws ExpressionErrorException / public function addFunction(XPathExpr $xpath, FunctionNode $function) { if (!isset($this->functionTranslators[$function->getName()])) { throw new ExpressionErrorException(sprintf('Function "%s" not supported.', $function->getName())); } return call_user_func($this->functionTranslators[$function->getName()], $xpath, $function); } /* * @param XPathExpr $xpath * @param string $pseudoClass * * @return XPathExpr * * @throws ExpressionErrorException / public function addPseudoClass(XPathExpr $xpath, $pseudoClass) { if (!isset($this->pseudoClassTranslators[$pseudoClass])) { throw new ExpressionErrorException(sprintf('Pseudo-class "%s" not supported.', $pseudoClass)); } return call_user_func($this->pseudoClassTranslators[$pseudoClass], $xpath); } /* * @param XPathExpr $xpath * @param string $operator * @param string $attribute * @param string $value * * @throws ExpressionErrorException * * @return XPathExpr / public function addAttributeMatching(XPathExpr $xpath, $operator, $attribute, $value) { if (!isset($this->attributeMatchingTranslators[$operator])) { throw new ExpressionErrorException(sprintf('Attribute matcher operator "%s" not supported.', $operator)); } return call_user_func($this->attributeMatchingTranslators[$operator], $xpath, $attribute, $value); } /* * @param string $css * * @return SelectorNode[] */ private function parseSelectors($css) { foreach ($this->shortcutParsers as $shortcut) { $tokens = $shortcut->parse($css); if (!empty($tokens)) { return $tokens; } } return $this->mainParser->parse($css); } }	8.38 KB	2024-07-17 10:22
📄 TranslatorInterface.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * 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\Node\SelectorNode; /* * XPath expression translator interface. * * This component is a port of the Python cssselector library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> / interface TranslatorInterface { /* * Translates a CSS selector to an XPath expression. * * @param string $cssExpr * @param string $prefix * * @return XPathExpr / public function cssToXPath($cssExpr, $prefix = 'descendant-or-self::'); /* * Translates a parsed selector node to an XPath expression * * @param SelectorNode $selector * @param string $prefix * * @return XPathExpr */ public function selectorToXPath(SelectorNode $selector, $prefix = 'descendant-or-self::'); }	1.15 KB	2024-07-17 10:22
📄 XPathExpr.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\CssSelector\XPath; /* * XPath expression translator interface. * * This component is a port of the Python cssselector library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> / class XPathExpr { /* * @var string / private $path; /* * @var string / private $element; /* * @var string / private $condition; /* * @param string $path * @param string $element * @param string $condition * @param boolean $starPrefix / public function __construct($path = '', $element = '', $condition = '', $starPrefix = false) { $this->path = $path; $this->element = $element; $this->condition = $condition; if ($starPrefix) { $this->addStarPrefix(); } } /** * @return string / public function getElement() { return $this->element; } /* * @param $condition * * @return XPathExpr / public function addCondition($condition) { $this->condition = $this->condition ? sprintf('%s and (%s)', $this->condition, $condition) : $condition; return $this; } /* * @return string / public function getCondition() { return $this->condition; } /* * @return XPathExpr / public function addNameTest() { if ('' !== $this->element) { $this->addCondition('name() = '.Translator::getXpathLiteral($this->element)); $this->element = ''; } return $this; } /* * @return XPathExpr / public function addStarPrefix() { $this->path .= '/'; return $this; } /** * Joins another XPathExpr with a combiner. * * @param string $combiner * @param XPathExpr $expr * * @return XPathExpr / public function join($combiner, XPathExpr $expr) { $path = $this->__toString().$combiner; if ('/' !== $expr->path) { $path .= $expr->path; } $this->path = $path; $this->element = $expr->element; $this->condition = $expr->condition; return $this; } /** * @return string */ public function __toString() { $path = $this->path.$this->element; $condition = null === $this->condition \|\| '' === $this->condition ? '' : '['.$this->condition.']'; return $path.$condition; } }	2.8 KB	2024-07-17 10:22

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