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📁 ..	-	2025-05-25 12:37
📄 AbstractExtension.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\Extension; /* * XPath expression translator abstract extension. * * 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> / abstract class AbstractExtension implements ExtensionInterface { /* * {@inheritdoc} / public function getNodeTranslators() { return array(); } /* * {@inheritdoc} / public function getCombinationTranslators() { return array(); } /* * {@inheritdoc} / public function getFunctionTranslators() { return array(); } /* * {@inheritdoc} / public function getPseudoClassTranslators() { return array(); } /* * {@inheritdoc} */ public function getAttributeMatchingTranslators() { return array(); } }	1.22 KB	2024-07-17 10:22
📄 AttributeMatchingExtension.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\Extension; use Symfony\Component\CssSelector\XPath\Translator; use Symfony\Component\CssSelector\XPath\XPathExpr; /* * XPath expression translator attribute extension. * * 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 AttributeMatchingExtension extends AbstractExtension { /* * {@inheritdoc} / public function getAttributeMatchingTranslators() { return array( 'exists' => array($this, 'translateExists'), '=' => array($this, 'translateEquals'), '~=' => array($this, 'translateIncludes'), '\|=' => array($this, 'translateDashMatch'), '^=' => array($this, 'translatePrefixMatch'), '$=' => array($this, 'translateSuffixMatch'), '=' => array($this, 'translateSubstringMatch'), '!=' => array($this, 'translateDifferent'), ); } /** * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translateExists(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition($attribute); } /* * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translateEquals(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition(sprintf('%s = %s', $attribute, Translator::getXpathLiteral($value))); } /* * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translateIncludes(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition($value ? sprintf( '%1$s and contains(concat(\' \', normalize-space(%1$s), \' \'), %2$s)', $attribute, Translator::getXpathLiteral(' '.$value.' ') ) : '0'); } /* * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translateDashMatch(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition(sprintf( '%1$s and (%1$s = %2$s or starts-with(%1$s, %3$s))', $attribute, Translator::getXpathLiteral($value), Translator::getXpathLiteral($value.'-') )); } /* * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translatePrefixMatch(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition($value ? sprintf( '%1$s and starts-with(%1$s, %2$s)', $attribute, Translator::getXpathLiteral($value) ) : '0'); } /* * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translateSuffixMatch(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition($value ? sprintf( '%1$s and substring(%1$s, string-length(%1$s)-%2$s) = %3$s', $attribute, strlen($value) - 1, Translator::getXpathLiteral($value) ) : '0'); } /* * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translateSubstringMatch(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition($value ? sprintf( '%1$s and contains(%1$s, %2$s)', $attribute, Translator::getXpathLiteral($value) ) : '0'); } /* * @param XPathExpr $xpath * @param string $attribute * @param string $value * * @return XPathExpr / public function translateDifferent(XPathExpr $xpath, $attribute, $value) { return $xpath->addCondition(sprintf( $value ? 'not(%1$s) or %1$s != %2$s' : '%s != %s', $attribute, Translator::getXpathLiteral($value) )); } /* * {@inheritdoc} */ public function getName() { return 'attribute-matching'; } }	4.71 KB	2024-07-17 10:22
📄 CombinationExtension.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\Extension; use Symfony\Component\CssSelector\XPath\XPathExpr; /* * XPath expression translator combination extension. * * 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 CombinationExtension extends AbstractExtension { /* * {@inheritdoc} / public function getCombinationTranslators() { return array( ' ' => array($this, 'translateDescendant'), '>' => array($this, 'translateChild'), '+' => array($this, 'translateDirectAdjacent'), '~' => array($this, 'translateIndirectAdjacent'), ); } /* * @param XPathExpr $xpath * @param XPathExpr $combinedXpath * * @return XPathExpr / public function translateDescendant(XPathExpr $xpath, XPathExpr $combinedXpath) { return $xpath->join('/descendant-or-self::/', $combinedXpath); } /** * @param XPathExpr $xpath * @param XPathExpr $combinedXpath * * @return XPathExpr / public function translateChild(XPathExpr $xpath, XPathExpr $combinedXpath) { return $xpath->join('/', $combinedXpath); } /* * @param XPathExpr $xpath * @param XPathExpr $combinedXpath * * @return XPathExpr / public function translateDirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath) { return $xpath ->join('/following-sibling::', $combinedXpath) ->addNameTest() ->addCondition('position() = 1'); } /* * @param XPathExpr $xpath * @param XPathExpr $combinedXpath * * @return XPathExpr / public function translateIndirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath) { return $xpath->join('/following-sibling::', $combinedXpath); } /* * {@inheritdoc} */ public function getName() { return 'combination'; } }	2.31 KB	2024-07-17 10:22
📄 ExtensionInterface.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\Extension; /* * XPath expression translator extension 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 ExtensionInterface { /* * Returns node translators. * * @return callable[] / public function getNodeTranslators(); /* * Returns combination translators. * * @return callable[] / public function getCombinationTranslators(); /* * Returns function translators. * * @return callable[] / public function getFunctionTranslators(); /* * Returns pseudo-class translators. * * @return callable[] / public function getPseudoClassTranslators(); /* * Returns attribute operation translators. * * @return callable[] / public function getAttributeMatchingTranslators(); /* * Returns extension name. * * @return string */ public function getName(); }	1.37 KB	2024-07-17 10:22
📄 FunctionExtension.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\Extension; use Symfony\Component\CssSelector\Exception\ExpressionErrorException; use Symfony\Component\CssSelector\Exception\SyntaxErrorException; use Symfony\Component\CssSelector\Node\FunctionNode; use Symfony\Component\CssSelector\Parser\Parser; use Symfony\Component\CssSelector\XPath\Translator; use Symfony\Component\CssSelector\XPath\XPathExpr; /* * XPath expression translator function extension. * * 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 FunctionExtension extends AbstractExtension { /* * {@inheritdoc} / public function getFunctionTranslators() { return array( 'nth-child' => array($this, 'translateNthChild'), 'nth-last-child' => array($this, 'translateNthLastChild'), 'nth-of-type' => array($this, 'translateNthOfType'), 'nth-last-of-type' => array($this, 'translateNthLastOfType'), 'contains' => array($this, 'translateContains'), 'lang' => array($this, 'translateLang'), ); } /* * @param XPathExpr $xpath * @param FunctionNode $function * @param boolean $last * @param boolean $addNameTest * * @return XPathExpr * * @throws ExpressionErrorException / public function translateNthChild(XPathExpr $xpath, FunctionNode $function, $last = false, $addNameTest = true) { try { list($a, $b) = Parser::parseSeries($function->getArguments()); } catch (SyntaxErrorException $e) { throw new ExpressionErrorException(sprintf('Invalid series: %s', implode(', ', $function->getArguments())), 0, $e); } $xpath->addStarPrefix(); if ($addNameTest) { $xpath->addNameTest(); } if (0 === $a) { return $xpath->addCondition('position() = '.($last ? 'last() - '.($b - 1) : $b)); } if ($a < 0) { if ($b < 1) { return $xpath->addCondition('false()'); } $sign = '<='; } else { $sign = '>='; } $expr = 'position()'; if ($last) { $expr = 'last() - '.$expr; $b--; } if (0 !== $b) { $expr .= ' - '.$b; } $conditions = array(sprintf('%s %s 0', $expr, $sign)); if (1 !== $a && -1 !== $a) { $conditions[] = sprintf('(%s) mod %d = 0', $expr, $a); } return $xpath->addCondition(implode(' and ', $conditions)); // todo: handle an+b, odd, even // an+b means every-a, plus b, e.g., 2n+1 means odd // 0n+b means b // n+0 means a=1, i.e., all elements // an means every a elements, i.e., 2n means even // -n means -1n // -1n+6 means elements 6 and previous } /* * @param XPathExpr $xpath * @param FunctionNode $function * * @return XPathExpr / public function translateNthLastChild(XPathExpr $xpath, FunctionNode $function) { return $this->translateNthChild($xpath, $function, true); } /* * @param XPathExpr $xpath * @param FunctionNode $function * * @return XPathExpr / public function translateNthOfType(XPathExpr $xpath, FunctionNode $function) { return $this->translateNthChild($xpath, $function, false, false); } /* * @param XPathExpr $xpath * @param FunctionNode $function * * @return XPathExpr * * @throws ExpressionErrorException / public function translateNthLastOfType(XPathExpr $xpath, FunctionNode $function) { if ('' === $xpath->getElement()) { throw new ExpressionErrorException('":nth-of-type()" is not implemented.'); } return $this->translateNthChild($xpath, $function, true, false); } /* * @param XPathExpr $xpath * @param FunctionNode $function * * @return XPathExpr * * @throws ExpressionErrorException / public function translateContains(XPathExpr $xpath, FunctionNode $function) { $arguments = $function->getArguments(); foreach ($arguments as $token) { if (!($token->isString() \|\| $token->isIdentifier())) { throw new ExpressionErrorException( 'Expected a single string or identifier for :contains(), got ' .implode(', ', $arguments) ); } } return $xpath->addCondition(sprintf( 'contains(string(.), %s)', Translator::getXpathLiteral($arguments[0]->getValue()) )); } /* * @param XPathExpr $xpath * @param FunctionNode $function * * @return XPathExpr * * @throws ExpressionErrorException / public function translateLang(XPathExpr $xpath, FunctionNode $function) { $arguments = $function->getArguments(); foreach ($arguments as $token) { if (!($token->isString() \|\| $token->isIdentifier())) { throw new ExpressionErrorException( 'Expected a single string or identifier for :lang(), got ' .implode(', ', $arguments) ); } } return $xpath->addCondition(sprintf( 'lang(%s)', Translator::getXpathLiteral($arguments[0]->getValue()) )); } /* * {@inheritdoc} */ public function getName() { return 'function'; } }	5.92 KB	2024-07-17 10:22
📄 HtmlExtension.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\Extension; use Symfony\Component\CssSelector\Exception\ExpressionErrorException; use Symfony\Component\CssSelector\Node\FunctionNode; use Symfony\Component\CssSelector\XPath\Translator; use Symfony\Component\CssSelector\XPath\XPathExpr; /* * XPath expression translator HTML extension. * * 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 HtmlExtension extends AbstractExtension { /* * Constructor. * * @param Translator $translator / public function __construct(Translator $translator) { $translator ->getExtension('node') ->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true) ->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true); } /* * {@inheritdoc} / public function getPseudoClassTranslators() { return array( 'checked' => array($this, 'translateChecked'), 'link' => array($this, 'translateLink'), 'disabled' => array($this, 'translateDisabled'), 'enabled' => array($this, 'translateEnabled'), 'selected' => array($this, 'translateSelected'), 'invalid' => array($this, 'translateInvalid'), 'hover' => array($this, 'translateHover'), 'visited' => array($this, 'translateVisited'), ); } /* * {@inheritdoc} / public function getFunctionTranslators() { return array( 'lang' => array($this, 'translateLang'), ); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateChecked(XPathExpr $xpath) { return $xpath->addCondition( '(@checked ' ."and (name(.) = 'input' or name(.) = 'command')" ."and (@type = 'checkbox' or @type = 'radio'))" ); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateLink(XPathExpr $xpath) { return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')"); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateDisabled(XPathExpr $xpath) { return $xpath->addCondition( "(" ."@disabled and" ."(" ."(name(.) = 'input' and @type != 'hidden')" ." or name(.) = 'button'" ." or name(.) = 'select'" ." or name(.) = 'textarea'" ." or name(.) = 'command'" ." or name(.) = 'fieldset'" ." or name(.) = 'optgroup'" ." or name(.) = 'option'" .")" .") or (" ."(name(.) = 'input' and @type != 'hidden')" ." or name(.) = 'button'" ." or name(.) = 'select'" ." or name(.) = 'textarea'" .")" ." and ancestor::fieldset[@disabled]" ); // todo: in the second half, add "and is not a descendant of that fieldset element's first legend element child, if any." } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateEnabled(XPathExpr $xpath) { return $xpath->addCondition( '(' .'@href and (' ."name(.) = 'a'" ." or name(.) = 'link'" ." or name(.) = 'area'" .')' .') or (' .'(' ."name(.) = 'command'" ." or name(.) = 'fieldset'" ." or name(.) = 'optgroup'" .')' .' and not(@disabled)' .') or (' .'(' ."(name(.) = 'input' and @type != 'hidden')" ." or name(.) = 'button'" ." or name(.) = 'select'" ." or name(.) = 'textarea'" ." or name(.) = 'keygen'" .')' ." and not (@disabled or ancestor::fieldset[@disabled])" .') or (' ."name(.) = 'option' and not(" ."@disabled or ancestor::optgroup[@disabled]" .')' .')' ); } /* * @param XPathExpr $xpath * @param FunctionNode $function * * @return XPathExpr * * @throws ExpressionErrorException / public function translateLang(XPathExpr $xpath, FunctionNode $function) { $arguments = $function->getArguments(); foreach ($arguments as $token) { if (!($token->isString() \|\| $token->isIdentifier())) { throw new ExpressionErrorException( 'Expected a single string or identifier for :lang(), got ' .implode(', ', $arguments) ); } } return $xpath->addCondition(sprintf( 'ancestor-or-self::[@lang][1][starts-with(concat(' ."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')" .', %s)]', 'lang', Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-') )); } /** * @param XPathExpr $xpath * * @return XPathExpr / public function translateSelected(XPathExpr $xpath) { return $xpath->addCondition("(@selected and name(.) = 'option')"); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateInvalid(XPathExpr $xpath) { return $xpath->addCondition('0'); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateHover(XPathExpr $xpath) { return $xpath->addCondition('0'); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateVisited(XPathExpr $xpath) { return $xpath->addCondition('0'); } /* * {@inheritdoc} */ public function getName() { return 'html'; } }	6.56 KB	2024-07-17 10:22
📄 NodeExtension.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\Extension; use Symfony\Component\CssSelector\Node; use Symfony\Component\CssSelector\XPath\Translator; use Symfony\Component\CssSelector\XPath\XPathExpr; /* * XPath expression translator node extension. * * 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 NodeExtension extends AbstractExtension { const ELEMENT_NAME_IN_LOWER_CASE = 1; const ATTRIBUTE_NAME_IN_LOWER_CASE = 2; const ATTRIBUTE_VALUE_IN_LOWER_CASE = 4; /* * @var Translator / private $translator; /* * @var int / private $flags; /* * Constructor. * * @param Translator $translator * @param int $flags / public function __construct(Translator $translator, $flags = 0) { $this->translator = $translator; $this->flags = $flags; } /* * @param int $flag * @param boolean $on * * @return NodeExtension / public function setFlag($flag, $on) { if ($on && !$this->hasFlag($flag)) { $this->flags += $flag; } if (!$on && $this->hasFlag($flag)) { $this->flags -= $flag; } return $this; } /* * @param int $flag * * @return boolean / public function hasFlag($flag) { return $this->flags & $flag; } /* * {@inheritdoc} / public function getNodeTranslators() { return array( 'Selector' => array($this, 'translateSelector'), 'CombinedSelector' => array($this, 'translateCombinedSelector'), 'Negation' => array($this, 'translateNegation'), 'Function' => array($this, 'translateFunction'), 'Pseudo' => array($this, 'translatePseudo'), 'Attribute' => array($this, 'translateAttribute'), 'Class' => array($this, 'translateClass'), 'Hash' => array($this, 'translateHash'), 'Element' => array($this, 'translateElement'), ); } /* * @param Node\SelectorNode $node * * @return XPathExpr / public function translateSelector(Node\SelectorNode $node) { return $this->translator->nodeToXPath($node->getTree()); } /* * @param Node\CombinedSelectorNode $node * * @return XPathExpr / public function translateCombinedSelector(Node\CombinedSelectorNode $node) { return $this->translator->addCombination($node->getCombinator(), $node->getSelector(), $node->getSubSelector()); } /* * @param Node\NegationNode $node * * @return XPathExpr / public function translateNegation(Node\NegationNode $node) { $xpath = $this->translator->nodeToXPath($node->getSelector()); $subXpath = $this->translator->nodeToXPath($node->getSubSelector()); $subXpath->addNameTest(); if ($subXpath->getCondition()) { return $xpath->addCondition(sprintf('not(%s)', $subXpath->getCondition())); } return $xpath->addCondition('0'); } /* * @param Node\FunctionNode $node * * @return XPathExpr / public function translateFunction(Node\FunctionNode $node) { $xpath = $this->translator->nodeToXPath($node->getSelector()); return $this->translator->addFunction($xpath, $node); } /* * @param Node\PseudoNode $node * * @return XPathExpr / public function translatePseudo(Node\PseudoNode $node) { $xpath = $this->translator->nodeToXPath($node->getSelector()); return $this->translator->addPseudoClass($xpath, $node->getIdentifier()); } /* * @param Node\AttributeNode $node * * @return XPathExpr / public function translateAttribute(Node\AttributeNode $node) { $name = $node->getAttribute(); $safe = $this->isSafeName($name); if ($this->hasFlag(self::ATTRIBUTE_NAME_IN_LOWER_CASE)) { $name = strtolower($name); } if ($node->getNamespace()) { $name = sprintf('%s:%s', $node->getNamespace(), $name); $safe = $safe && $this->isSafeName($node->getNamespace()); } $attribute = $safe ? '@'.$name : sprintf('attribute::[name() = %s]', Translator::getXpathLiteral($name)); $value = $node->getValue(); $xpath = $this->translator->nodeToXPath($node->getSelector()); if ($this->hasFlag(self::ATTRIBUTE_VALUE_IN_LOWER_CASE)) { $value = strtolower($value); } return $this->translator->addAttributeMatching($xpath, $node->getOperator(), $attribute, $value); } /** * @param Node\ClassNode $node * * @return XPathExpr / public function translateClass(Node\ClassNode $node) { $xpath = $this->translator->nodeToXPath($node->getSelector()); return $this->translator->addAttributeMatching($xpath, '~=', '@class', $node->getName()); } /* * @param Node\HashNode $node * * @return XPathExpr / public function translateHash(Node\HashNode $node) { $xpath = $this->translator->nodeToXPath($node->getSelector()); return $this->translator->addAttributeMatching($xpath, '=', '@id', $node->getId()); } /* * @param Node\ElementNode $node * * @return XPathExpr / public function translateElement(Node\ElementNode $node) { $element = $node->getElement(); if ($this->hasFlag(self::ELEMENT_NAME_IN_LOWER_CASE)) { $element = strtolower($element); } if ($element) { $safe = $this->isSafeName($element); } else { $element = ''; $safe = true; } if ($node->getNamespace()) { $element = sprintf('%s:%s', $node->getNamespace(), $element); $safe = $safe && $this->isSafeName($node->getNamespace()); } $xpath = new XPathExpr('', $element); if (!$safe) { $xpath->addNameTest(); } return $xpath; } /** * {@inheritdoc} / public function getName() { return 'node'; } /* * Tests if given name is safe. * * @param string $name * * @return boolean / private function isSafeName($name) { return 0 < preg_match('~^[a-zA-Z_][a-zA-Z0-9_.-]$~', $name); } }	6.83 KB	2024-07-17 10:22
📄 PseudoClassExtension.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\CssSelector\XPath\Extension; use Symfony\Component\CssSelector\Exception\ExpressionErrorException; use Symfony\Component\CssSelector\XPath\XPathExpr; /* * XPath expression translator pseudo-class extension. * * This component is a port of the Python cssselector library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> / class PseudoClassExtension extends AbstractExtension { /* * {@inheritdoc} / public function getPseudoClassTranslators() { return array( 'root' => array($this, 'translateRoot'), 'first-child' => array($this, 'translateFirstChild'), 'last-child' => array($this, 'translateLastChild'), 'first-of-type' => array($this, 'translateFirstOfType'), 'last-of-type' => array($this, 'translateLastOfType'), 'only-child' => array($this, 'translateOnlyChild'), 'only-of-type' => array($this, 'translateOnlyOfType'), 'empty' => array($this, 'translateEmpty'), ); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateRoot(XPathExpr $xpath) { return $xpath->addCondition('not(parent::)'); } /** * @param XPathExpr $xpath * * @return XPathExpr / public function translateFirstChild(XPathExpr $xpath) { return $xpath ->addStarPrefix() ->addNameTest() ->addCondition('position() = 1'); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateLastChild(XPathExpr $xpath) { return $xpath ->addStarPrefix() ->addNameTest() ->addCondition('position() = last()'); } /* * @param XPathExpr $xpath * * @return XPathExpr * * @throws ExpressionErrorException / public function translateFirstOfType(XPathExpr $xpath) { if ('' === $xpath->getElement()) { throw new ExpressionErrorException('":first-of-type" is not implemented.'); } return $xpath ->addStarPrefix() ->addCondition('position() = 1'); } /* * @param XPathExpr $xpath * * @return XPathExpr * * @throws ExpressionErrorException / public function translateLastOfType(XPathExpr $xpath) { if ('' === $xpath->getElement()) { throw new ExpressionErrorException('":last-of-type" is not implemented.'); } return $xpath ->addStarPrefix() ->addCondition('position() = last()'); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateOnlyChild(XPathExpr $xpath) { return $xpath ->addStarPrefix() ->addNameTest() ->addCondition('last() = 1'); } /* * @param XPathExpr $xpath * * @return XPathExpr * * @throws ExpressionErrorException / public function translateOnlyOfType(XPathExpr $xpath) { if ('' === $xpath->getElement()) { throw new ExpressionErrorException('":only-of-type" is not implemented.'); } return $xpath->addCondition('last() = 1'); } /* * @param XPathExpr $xpath * * @return XPathExpr / public function translateEmpty(XPathExpr $xpath) { return $xpath->addCondition('not() and not(string-length())'); } /** * {@inheritdoc} */ public function getName() { return 'pseudo-class'; } }	3.95 KB	2024-07-17 10:22

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