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79da71ecf8
* symfony 5.4 (diff dev) * symfony 5.4 (working) * symfony 5.4 (update autoload) * symfony 5.4 (remove swiftmailer mailer implementation) * symfony 5.4 (php doc and split Global accessor class) ### Impacted packages: composer require php:">=7.2.5 <8.0.0" symfony/console:5.4.* symfony/dotenv:5.4.* symfony/framework-bundle:5.4.* symfony/twig-bundle:5.4.* symfony/yaml:5.4.* --update-with-dependencies composer require symfony/stopwatch:5.4.* symfony/web-profiler-bundle:5.4.* --dev --update-with-dependencies
70 lines
2.1 KiB
PHP
70 lines
2.1 KiB
PHP
<?php
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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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namespace Symfony\Component\CssSelector;
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use Symfony\Component\CssSelector\Parser\Shortcut\ClassParser;
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use Symfony\Component\CssSelector\Parser\Shortcut\ElementParser;
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use Symfony\Component\CssSelector\Parser\Shortcut\EmptyStringParser;
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use Symfony\Component\CssSelector\Parser\Shortcut\HashParser;
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use Symfony\Component\CssSelector\XPath\Extension\HtmlExtension;
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use Symfony\Component\CssSelector\XPath\Translator;
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/**
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* CssSelectorConverter is the main entry point of the component and can convert CSS
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* selectors to XPath expressions.
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*
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* @author Christophe Coevoet <stof@notk.org>
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*/
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class CssSelectorConverter
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{
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private $translator;
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private $cache;
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private static $xmlCache = [];
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private static $htmlCache = [];
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/**
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* @param bool $html Whether HTML support should be enabled. Disable it for XML documents
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*/
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public function __construct(bool $html = true)
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{
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$this->translator = new Translator();
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if ($html) {
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$this->translator->registerExtension(new HtmlExtension($this->translator));
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$this->cache = &self::$htmlCache;
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} else {
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$this->cache = &self::$xmlCache;
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}
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$this->translator
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->registerParserShortcut(new EmptyStringParser())
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->registerParserShortcut(new ElementParser())
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->registerParserShortcut(new ClassParser())
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->registerParserShortcut(new HashParser())
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;
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}
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/**
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* Translates a CSS expression to its XPath equivalent.
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*
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* Optionally, a prefix can be added to the resulting XPath
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* expression with the $prefix parameter.
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*
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* @return string
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*/
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public function toXPath(string $cssExpr, string $prefix = 'descendant-or-self::')
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{
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return $this->cache[$prefix][$cssExpr] ?? $this->cache[$prefix][$cssExpr] = $this->translator->cssToXPath($cssExpr, $prefix);
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}
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}
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