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Directory >> /home/whitjouh/www/core/vendor/symfony/http-kernel/HttpCache/

File / Folder	Size	Action
.	-
AbstractSurrogate.php	4.642KB	edt ren
Esi.php	3.237KB	edt ren
HttpCache.php	26.846KB	edt ren
ResponseCacheStrategy.php	9.057KB	edt ren
ResponseCacheStrategyIn...	1.03KB	edt ren
Ssi.php	2.528KB	edt ren
Store.php	14.361KB	edt ren
StoreInterface.php	2.176KB	edt ren
SubRequestHandler.php	3.829KB	edt ren
SurrogateInterface.php	2.107KB	edt ren

<?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(): string
    {
        return 'esi';
    }

/**
     * @return void
     */
    public function addSurrogateControl(Response $response)
    {
        if (str_contains($response->getContent(), '<esi:include')) {
            $response->headers->set('Surrogate-Control', 'content="ESI/1.0"');
        }
    }

public function renderIncludeTag(string $uri, ?string $alt = null, bool $ignoreErrors = true, string $comment = ''): string
    {
        $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;
    }

public function process(Request $request, Response $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);

$boundary = self::generateBodyEvalBoundary();
        $chunks = preg_split('#<esi\:include\s+(.*?)\s*(?:/|</esi\:include)>#', $content, -1, \PREG_SPLIT_DELIM_CAPTURE);

$i = 1;
        while (isset($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] = $boundary.$options['src']."\n".($options['alt'] ?? '')."\n".('continue' === ($options['onerror'] ?? ''))."\n";
            $i += 2;
        }
        $content = $boundary.implode('', $chunks).$boundary;

$response->setContent($content);
        $response->headers->set('X-Body-Eval', 'ESI');

// remove ESI/1.0 from the Surrogate-Control header
        $this->removeFromControl($response);

return $response;
    }
}

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