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Diffstat (limited to 'symfony/css-selector/XPath/Extension/HtmlExtension.php')
| -rw-r--r-- | symfony/css-selector/XPath/Extension/HtmlExtension.php | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/symfony/css-selector/XPath/Extension/HtmlExtension.php b/symfony/css-selector/XPath/Extension/HtmlExtension.php new file mode 100644 index 00000000..6edc0858 --- /dev/null +++ b/symfony/css-selector/XPath/Extension/HtmlExtension.php @@ -0,0 +1,187 @@ +<?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 cssselect library, + * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. + * + * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> + * + * @internal + */ +class HtmlExtension extends AbstractExtension +{ + public function __construct(Translator $translator) + { + $translator + ->getExtension('node') + ->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true) + ->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true); + } + + /** + * {@inheritdoc} + */ + public function getPseudoClassTranslators(): array + { + return [ + 'checked' => [$this, 'translateChecked'], + 'link' => [$this, 'translateLink'], + 'disabled' => [$this, 'translateDisabled'], + 'enabled' => [$this, 'translateEnabled'], + 'selected' => [$this, 'translateSelected'], + 'invalid' => [$this, 'translateInvalid'], + 'hover' => [$this, 'translateHover'], + 'visited' => [$this, 'translateVisited'], + ]; + } + + /** + * {@inheritdoc} + */ + public function getFunctionTranslators(): array + { + return [ + 'lang' => [$this, 'translateLang'], + ]; + } + + public function translateChecked(XPathExpr $xpath): XPathExpr + { + return $xpath->addCondition( + '(@checked ' + ."and (name(.) = 'input' or name(.) = 'command')" + ."and (@type = 'checkbox' or @type = 'radio'))" + ); + } + + public function translateLink(XPathExpr $xpath): XPathExpr + { + return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')"); + } + + public function translateDisabled(XPathExpr $xpath): XPathExpr + { + 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." + } + + public function translateEnabled(XPathExpr $xpath): XPathExpr + { + 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]' + .')' + .')' + ); + } + + /** + * @throws ExpressionErrorException + */ + public function translateLang(XPathExpr $xpath, FunctionNode $function): XPathExpr + { + $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()).'-') + )); + } + + public function translateSelected(XPathExpr $xpath): XPathExpr + { + return $xpath->addCondition("(@selected and name(.) = 'option')"); + } + + public function translateInvalid(XPathExpr $xpath): XPathExpr + { + return $xpath->addCondition('0'); + } + + public function translateHover(XPathExpr $xpath): XPathExpr + { + return $xpath->addCondition('0'); + } + + public function translateVisited(XPathExpr $xpath): XPathExpr + { + return $xpath->addCondition('0'); + } + + /** + * {@inheritdoc} + */ + public function getName(): string + { + return 'html'; + } +} |