Viewing file:  FilesystemCommonTrait.php (3.9 KB) -rw-r--r--
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<?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\Cache\Traits;
use Symfony\Component\Cache\Exception\InvalidArgumentException;
/**
* @author Nicolas Grekas <p@tchwork.com>
*
* @internal
*/
trait FilesystemCommonTrait
{
private $directory;
private $tmp;
private function init($namespace, $directory)
{
if (!isset($directory[0])) {
$directory = sys_get_temp_dir().'/symfony-cache';
} else {
$directory = realpath($directory) ?: $directory;
}
if (isset($namespace[0])) {
if (preg_match('#[^-+_.A-Za-z0-9]#', $namespace, $match)) {
throw new InvalidArgumentException(sprintf('Namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));
}
$directory .= \DIRECTORY_SEPARATOR.$namespace;
}
if (!file_exists($directory)) {
@mkdir($directory, 0777, true);
}
$directory .= \DIRECTORY_SEPARATOR;
// On Windows the whole path is limited to 258 chars
if ('\\' === \DIRECTORY_SEPARATOR && \strlen($directory) > 234) {
throw new InvalidArgumentException(sprintf('Cache directory too long (%s)', $directory));
}
$this->directory = $directory;
}
/**
* {@inheritdoc}
*/
protected function doClear($namespace)
{
$ok = true;
foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS)) as $file) {
$ok = ($file->isDir() || $this->doUnlink($file) || !file_exists($file)) && $ok;
}
return $ok;
}
/**
* {@inheritdoc}
*/
protected function doDelete(array $ids)
{
$ok = true;
foreach ($ids as $id) {
$file = $this->getFile($id);
$ok = (!file_exists($file) || $this->doUnlink($file) || !file_exists($file)) && $ok;
}
return $ok;
}
protected function doUnlink($file)
{
return @unlink($file);
}
private function write($file, $data, $expiresAt = null)
{
set_error_handler(__CLASS__.'::throwError');
try {
if (null === $this->tmp) {
$this->tmp = $this->directory.uniqid('', true);
}
file_put_contents($this->tmp, $data);
if (null !== $expiresAt) {
touch($this->tmp, $expiresAt);
}
return rename($this->tmp, $file);
} finally {
restore_error_handler();
}
}
private function getFile($id, $mkdir = false, string $directory = null)
{
// Use MD5 to favor speed over security, which is not an issue here
$hash = str_replace('/', '-', base64_encode(hash('md5', static::class.$id, true)));
$dir = ($directory ?? $this->directory).strtoupper($hash[0].\DIRECTORY_SEPARATOR.$hash[1].\DIRECTORY_SEPARATOR);
if ($mkdir && !file_exists($dir)) {
@mkdir($dir, 0777, true);
}
return $dir.substr($hash, 2, 20);
}
/**
* @internal
*/
public static function throwError($type, $message, $file, $line)
{
throw new \ErrorException($message, 0, $type, $file, $line);
}
public function __sleep()
{
throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
}
public function __wakeup()
{
throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
}
public function __destruct()
{
if (method_exists(parent::class, '__destruct')) {
parent::__destruct();
}
if (null !== $this->tmp && file_exists($this->tmp)) {
unlink($this->tmp);
}
}
}
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