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Direktori : /home2/selectio/www/ecommerce-website/website/vendor/symfony/http-kernel/HttpCache/ |
Current File : /home2/selectio/www/ecommerce-website/website/vendor/symfony/http-kernel/HttpCache/Esi.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\HttpKernel\HttpCache; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; /** * Esi implements the ESI capabilities to Request and Response instances. * * For more information, read the following W3C notes: * * * ESI Language Specification 1.0 (http://www.w3.org/TR/esi-lang) * * * Edge Architecture Specification (http://www.w3.org/TR/edge-arch) * * @author Fabien Potencier <fabien@symfony.com> */ class Esi extends AbstractSurrogate { public function getName() { return 'esi'; } /** * {@inheritdoc} */ public function addSurrogateControl(Response $response) { if (str_contains($response->getContent(), '<esi:include')) { $response->headers->set('Surrogate-Control', 'content="ESI/1.0"'); } } /** * {@inheritdoc} */ public function renderIncludeTag(string $uri, string $alt = null, bool $ignoreErrors = true, string $comment = '') { $html = sprintf('<esi:include src="%s"%s%s />', $uri, $ignoreErrors ? ' onerror="continue"' : '', $alt ? sprintf(' alt="%s"', $alt) : '' ); if (!empty($comment)) { return sprintf("<esi:comment text=\"%s\" />\n%s", $comment, $html); } return $html; } /** * {@inheritdoc} */ public function process(Request $request, Response $response) { $type = $response->headers->get('Content-Type'); if (empty($type)) { $type = 'text/html'; } $parts = explode(';', $type); if (!\in_array($parts[0], $this->contentTypes)) { return $response; } // we don't use a proper XML parser here as we can have ESI tags in a plain text response $content = $response->getContent(); $content = preg_replace('#<esi\:remove>.*?</esi\:remove>#s', '', $content); $content = preg_replace('#<esi\:comment[^>]+>#s', '', $content); $chunks = preg_split('#<esi\:include\s+(.*?)\s*(?:/|</esi\:include)>#', $content, -1, \PREG_SPLIT_DELIM_CAPTURE); $chunks[0] = str_replace($this->phpEscapeMap[0], $this->phpEscapeMap[1], $chunks[0]); $i = 1; while (isset($chunks[$i])) { $options = []; preg_match_all('/(src|onerror|alt)="([^"]*?)"/', $chunks[$i], $matches, \PREG_SET_ORDER); foreach ($matches as $set) { $options[$set[1]] = $set[2]; } if (!isset($options['src'])) { throw new \RuntimeException('Unable to process an ESI tag without a "src" attribute.'); } $chunks[$i] = sprintf('<?php echo $this->surrogate->handle($this, %s, %s, %s) ?>'."\n", var_export($options['src'], true), var_export($options['alt'] ?? '', true), isset($options['onerror']) && 'continue' === $options['onerror'] ? 'true' : 'false' ); ++$i; $chunks[$i] = str_replace($this->phpEscapeMap[0], $this->phpEscapeMap[1], $chunks[$i]); ++$i; } $content = implode('', $chunks); $response->setContent($content); $response->headers->set('X-Body-Eval', 'ESI'); // remove ESI/1.0 from the Surrogate-Control header $this->removeFromControl($response); return $response; } }