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<?php |
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|
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <fabien@symfony.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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namespace Symfony\Component\CssSelector\XPath\Extension; |
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|
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use Symfony\Component\CssSelector\Exception\ExpressionErrorException; |
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use Symfony\Component\CssSelector\Node\FunctionNode; |
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use Symfony\Component\CssSelector\XPath\Translator; |
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use Symfony\Component\CssSelector\XPath\XPathExpr; |
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|
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/** |
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* XPath expression translator HTML extension. |
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* |
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* This component is a port of the Python cssselect library, |
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* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. |
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* |
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* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> |
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* |
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* @internal |
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*/ |
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class HtmlExtension extends AbstractExtension |
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{ |
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public function __construct(Translator $translator) |
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{ |
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$translator |
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->getExtension('node') |
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->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true) |
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->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true); |
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} |
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|
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public function getPseudoClassTranslators(): array |
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{ |
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return [ |
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'checked' => $this->translateChecked(...), |
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'link' => $this->translateLink(...), |
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'disabled' => $this->translateDisabled(...), |
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'enabled' => $this->translateEnabled(...), |
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'selected' => $this->translateSelected(...), |
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'invalid' => $this->translateInvalid(...), |
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'hover' => $this->translateHover(...), |
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'visited' => $this->translateVisited(...), |
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]; |
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} |
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|
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public function getFunctionTranslators(): array |
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{ |
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return [ |
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'lang' => $this->translateLang(...), |
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]; |
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} |
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|
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public function translateChecked(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition( |
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'(@checked ' |
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."and (name(.) = 'input' or name(.) = 'command')" |
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."and (@type = 'checkbox' or @type = 'radio'))" |
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); |
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} |
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|
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public function translateLink(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')"); |
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} |
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|
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public function translateDisabled(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition( |
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'(' |
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.'@disabled and' |
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.'(' |
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."(name(.) = 'input' and @type != 'hidden')" |
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." or name(.) = 'button'" |
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." or name(.) = 'select'" |
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." or name(.) = 'textarea'" |
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." or name(.) = 'command'" |
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." or name(.) = 'fieldset'" |
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." or name(.) = 'optgroup'" |
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." or name(.) = 'option'" |
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.')' |
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.') or (' |
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."(name(.) = 'input' and @type != 'hidden')" |
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." or name(.) = 'button'" |
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." or name(.) = 'select'" |
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." or name(.) = 'textarea'" |
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.')' |
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.' and ancestor::fieldset[@disabled]' |
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); |
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// todo: in the second half, add "and is not a descendant of that fieldset element's first legend element child, if any." |
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} |
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|
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public function translateEnabled(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition( |
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'(' |
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.'@href and (' |
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."name(.) = 'a'" |
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." or name(.) = 'link'" |
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." or name(.) = 'area'" |
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.')' |
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.') or (' |
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.'(' |
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."name(.) = 'command'" |
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." or name(.) = 'fieldset'" |
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." or name(.) = 'optgroup'" |
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.')' |
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.' and not(@disabled)' |
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.') or (' |
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.'(' |
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."(name(.) = 'input' and @type != 'hidden')" |
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." or name(.) = 'button'" |
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." or name(.) = 'select'" |
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." or name(.) = 'textarea'" |
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." or name(.) = 'keygen'" |
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.')' |
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.' and not (@disabled or ancestor::fieldset[@disabled])' |
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.') or (' |
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."name(.) = 'option' and not(" |
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.'@disabled or ancestor::optgroup[@disabled]' |
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.')' |
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.')' |
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); |
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} |
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|
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/** |
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* @throws ExpressionErrorException |
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*/ |
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public function translateLang(XPathExpr $xpath, FunctionNode $function): XPathExpr |
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{ |
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$arguments = $function->getArguments(); |
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foreach ($arguments as $token) { |
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if (!($token->isString() || $token->isIdentifier())) { |
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throw new ExpressionErrorException('Expected a single string or identifier for :lang(), got '.implode(', ', $arguments)); |
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} |
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} |
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|
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return $xpath->addCondition(\sprintf( |
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'ancestor-or-self::*[@lang][1][starts-with(concat(' |
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."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')" |
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.', %s)]', |
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'lang', |
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Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-') |
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)); |
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} |
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|
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public function translateSelected(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition("(@selected and name(.) = 'option')"); |
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} |
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|
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public function translateInvalid(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition('0'); |
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} |
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|
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public function translateHover(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition('0'); |
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} |
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|
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public function translateVisited(XPathExpr $xpath): XPathExpr |
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{ |
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return $xpath->addCondition('0'); |
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} |
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|
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public function getName(): string |
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{ |
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return 'html'; |
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} |
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} |
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|
