94 lines
2.7 KiB
PHP
94 lines
2.7 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\Templating\Loader;
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use Symfony\Component\Templating\Storage\FileStorage;
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use Symfony\Component\Templating\Storage\Storage;
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use Symfony\Component\Templating\TemplateReferenceInterface;
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/**
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* CacheLoader is a loader that caches other loaders responses
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* on the filesystem.
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*
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* This cache only caches on disk to allow PHP accelerators to cache the opcodes.
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* All other mechanism would imply the use of `eval()`.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class CacheLoader extends Loader
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{
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protected $loader;
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protected $dir;
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/**
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* @param LoaderInterface $loader A Loader instance
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* @param string $dir The directory where to store the cache files
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*/
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public function __construct(LoaderInterface $loader, $dir)
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{
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$this->loader = $loader;
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$this->dir = $dir;
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}
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/**
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* Loads a template.
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*
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* @return Storage|bool false if the template cannot be loaded, a Storage instance otherwise
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*/
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public function load(TemplateReferenceInterface $template)
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{
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$key = hash('sha256', $template->getLogicalName());
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$dir = $this->dir.\DIRECTORY_SEPARATOR.substr($key, 0, 2);
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$file = substr($key, 2).'.tpl';
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$path = $dir.\DIRECTORY_SEPARATOR.$file;
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if (is_file($path)) {
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if (null !== $this->logger) {
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$this->logger->debug('Fetching template from cache.', ['name' => $template->get('name')]);
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}
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return new FileStorage($path);
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}
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if (false === $storage = $this->loader->load($template)) {
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return false;
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}
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$content = $storage->getContent();
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if (!is_dir($dir) && !@mkdir($dir, 0777, true) && !is_dir($dir)) {
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throw new \RuntimeException(sprintf('Cache Loader was not able to create directory "%s".', $dir));
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}
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file_put_contents($path, $content);
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if (null !== $this->logger) {
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$this->logger->debug('Storing template in cache.', ['name' => $template->get('name')]);
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}
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return new FileStorage($path);
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}
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/**
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* Returns true if the template is still fresh.
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*
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* @param TemplateReferenceInterface $template A template
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* @param int $time The last modification time of the cached template (timestamp)
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*
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* @return bool
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*/
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public function isFresh(TemplateReferenceInterface $template, $time)
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{
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return $this->loader->isFresh($template, $time);
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}
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}
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