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<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Implements a cache on the filesystem.
*
* @author Andrew Tch <andrew@noop.lv>
*/
class Twig_Cache_Filesystem implements Twig_CacheInterface
{
const FORCE_BYTECODE_INVALIDATION = 1;
private $directory;
private $options;
/**
* @param $directory string The root cache directory
* @param $options int A set of options
*/
public function __construct($directory, $options = 0)
{
$this->directory = rtrim($directory, '\/').'/';
$this->options = $options;
}
public function generateKey($name, $className)
{
$hash = hash('sha256', $className);
return $this->directory.$hash[0].$hash[1].'/'.$hash.'.php';
}
public function load($key)
{
if (file_exists($key)) {
@include_once $key;
}
}
public function write($key, $content)
{
$dir = dirname($key);
if (!is_dir($dir)) {
if (false === @mkdir($dir, 0777, true)) {
clearstatcache(true, $dir);
if (!is_dir($dir)) {
throw new RuntimeException(sprintf('Unable to create the cache directory (%s).', $dir));
}
}
} elseif (!is_writable($dir)) {
throw new RuntimeException(sprintf('Unable to write in the cache directory (%s).', $dir));
}
$tmpFile = tempnam($dir, basename($key));
if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $key)) {
@chmod($key, 0666 & ~umask());
if (self::FORCE_BYTECODE_INVALIDATION == ($this->options & self::FORCE_BYTECODE_INVALIDATION)) {
// Compile cached file into bytecode cache
if (function_exists('opcache_invalidate')) {
opcache_invalidate($key, true);
} elseif (function_exists('apc_compile_file')) {
apc_compile_file($key);
}
}
return;
}
throw new RuntimeException(sprintf('Failed to write cache file "%s".', $key));
}
public function getTimestamp($key)
{
if (!file_exists($key)) {
return 0;
}
return (int) @filemtime($key);
}
}
class_alias('Twig_Cache_Filesystem', 'Twig\Cache\FilesystemCache', false);
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