forked from doctrine/common
/
FileCache.php
132 lines (116 loc) · 3.42 KB
/
FileCache.php
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<?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;
/**
* Base file cache driver.
*
* @since 2.3
* @author Fabio B. Silva <fabio.bat.silva@gmail.com>
*/
abstract class FileCache extends CacheProvider
{
/**
* @var string Cache directory.
*/
protected $directory;
/**
* @var string Cache file extension.
*/
protected $extension;
/**
* Constructor
*
* @param string $directory Cache directory.
* @param string $directory Cache file extension.
*
* @throws \InvalidArgumentException
*/
public function __construct($directory, $extension = null)
{
if ( ! is_dir($directory) && ! @mkdir($directory, 0777, true)) {
throw new \InvalidArgumentException(sprintf(
'The directory "%s" does not exist and could not be created.',
$directory
));
}
if ( ! is_writable($directory)) {
throw new \InvalidArgumentException(sprintf(
'The directory "%s" is not writable.',
$directory
));
}
$this->directory = realpath($directory);
$this->extension = $extension ?: $this->extension;
}
/**
* Gets the cache directory.
*
* @return string
*/
public function getDirectory()
{
return $this->directory;
}
/**
* Gets the cache file extension.
*
* @return string
*/
public function getExtension()
{
return $this->extension;
}
/**
* @return string
*/
protected function getFilename($id)
{
$path = implode(str_split(md5($id), 12), DIRECTORY_SEPARATOR);
$path = $this->directory . DIRECTORY_SEPARATOR . $path;
return $path . DIRECTORY_SEPARATOR . $id . $this->extension;
}
/**
* {@inheritdoc}
*/
protected function doDelete($id)
{
return unlink($this->getFilename($id));
}
/**
* {@inheritdoc}
*/
protected function doFlush()
{
$pattern = '/^.+\\' . $this->extension . '$/i';
$iterator = new \RecursiveDirectoryIterator($this->directory);
$iterator = new \RecursiveIteratorIterator($iterator);
$iterator = new \RegexIterator($iterator, $pattern);
foreach ($iterator as $name => $file) {
unlink($name);
}
return true;
}
/**
* {@inheritdoc}
*/
protected function doGetStats()
{
return null;
}
}