118 lines
3.1 KiB
PHP
118 lines
3.1 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\Config;
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/**
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* ConfigCache manages PHP cache files.
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*
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* When debug is enabled, it knows when to flush the cache
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* thanks to an array of ResourceInterface instances.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class ConfigCache
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{
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private $debug;
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private $file;
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/**
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* Constructor.
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*
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* @param string $file The absolute cache path
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* @param Boolean $debug Whether debugging is enabled or not
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*/
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public function __construct($file, $debug)
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{
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$this->file = $file;
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$this->debug = (Boolean) $debug;
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}
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/**
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* Gets the cache file path.
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*
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* @return string The cache file path
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*/
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public function __toString()
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{
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return $this->file;
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}
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/**
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* Checks if the cache is still fresh.
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*
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* This method always returns true when debug is off and the
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* cache file exists.
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*
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* @return Boolean true if the cache is fresh, false otherwise
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*/
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public function isFresh()
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{
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if (!is_file($this->file)) {
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return false;
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}
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if (!$this->debug) {
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return true;
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}
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$metadata = $this->file.'.meta';
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if (!is_file($metadata)) {
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return false;
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}
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$time = filemtime($this->file);
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$meta = unserialize(file_get_contents($metadata));
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foreach ($meta as $resource) {
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if (!$resource->isFresh($time)) {
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return false;
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}
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}
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return true;
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}
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/**
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* Writes cache.
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*
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* @param string $content The content to write in the cache
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* @param array $metadata An array of ResourceInterface instances
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*
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* @throws \RuntimeException When cache file can't be wrote
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*/
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public function write($content, array $metadata = null)
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{
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$dir = dirname($this->file);
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if (!is_dir($dir)) {
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if (false === @mkdir($dir, 0777, true)) {
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throw new \RuntimeException(sprintf('Unable to create the %s directory', $dir));
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}
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} elseif (!is_writable($dir)) {
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throw new \RuntimeException(sprintf('Unable to write in the %s directory', $dir));
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}
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$tmpFile = tempnam(dirname($this->file), basename($this->file));
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if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $this->file)) {
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@chmod($this->file, 0666 & ~umask());
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} else {
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throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $this->file));
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}
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if (null !== $metadata && true === $this->debug) {
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$file = $this->file.'.meta';
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$tmpFile = tempnam(dirname($file), basename($file));
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if (false !== @file_put_contents($tmpFile, serialize($metadata)) && @rename($tmpFile, $file)) {
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@chmod($file, 0666 & ~umask());
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}
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}
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}
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}
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