<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\Common\Cache;
/**
* Php file cache driver.
*
* @since 2.3
* @author Fabio B. Silva <fabio.bat.silva@gmail.com>
*/
class PhpFileCache extends FileCache
{
const EXTENSION = '.doctrinecache.php';
/**
* {@inheritdoc}
*/
public function __construct($directory, $extension = self::EXTENSION, $umask = 0002)
{
parent::__construct($directory, $extension, $umask);
}
/**
* {@inheritdoc}
*/
protected function doFetch($id)
{
$value = $this->includeFileForId($id);
if (! $value) {
return false;
}
if ($value['lifetime'] !== 0 && $value['lifetime'] < time()) {
return false;
}
return $value['data'];
}
/**
* {@inheritdoc}
*/
protected function doContains($id)
{
$value = $this->includeFileForId($id);
if (! $value) {
return false;
}
return $value['lifetime'] === 0 || $value['lifetime'] > time();
}
/**
* {@inheritdoc}
*/
protected function doSave($id, $data, $lifeTime = 0)
{
if ($lifeTime > 0) {
$lifeTime = time() + $lifeTime;
}
if (is_object($data) && ! method_exists($data, '__set_state')) {
throw new \InvalidArgumentException(
"Invalid argument given, PhpFileCache only allows objects that implement __set_state() " .
"and fully support var_export(). You can use the FilesystemCache to save arbitrary object " .
"graphs using serialize()/deserialize()."
);
}
$filename = $this->getFilename($id);
$value = array(
'lifetime' => $lifeTime,
'data' => $data
);
$value = var_export($value, true);
$code = sprintf('<?php return %s;', $value);
return $this->writeFile($filename, $code);
}
/**
* @param string $id
*
* @return array|false
*/
private function includeFileForId($id)
{
$fileName = $this->getFilename($id);
// note: error suppression is still faster than `file_exists`, `is_file` and `is_readable`
$value = @include $fileName;
if (! isset($value['lifetime'])) {
return false;
}
return $value;
}
}