Subversion-Projekte lars-tiefland.laravel_shop

<?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);

    }

    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(...),

        ];

    }

    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');

    }

    public function getName(): string

    {

        return 'html';

    }

}