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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
- {
- /**
- * The cache directory.
- *
- * @var string
- */
- protected $directory;
- /**
- * The cache file extension.
- *
- * @var string|null
- */
- protected $extension;
- /**
- * Constructor.
- *
- * @param string $directory The cache directory.
- * @param string|null $extension The cache file extension.
- *
- * @throws \InvalidArgumentException
- */
- public function __construct($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|null
- */
- public function getExtension()
- {
- return $this->extension;
- }
- /**
- * @param string $id
- *
- * @return string
- */
- protected function getFilename($id)
- {
- $hash = hash('sha256', $id);
- $path = implode(str_split($hash, 16), DIRECTORY_SEPARATOR);
- $path = $this->directory . DIRECTORY_SEPARATOR . $path;
- $id = preg_replace('@[\\\/:"*?<>|]+@', '', $id);
- return $path . DIRECTORY_SEPARATOR . $id . $this->extension;
- }
- /**
- * {@inheritdoc}
- */
- protected function doDelete($id)
- {
- return @unlink($this->getFilename($id));
- }
- /**
- * {@inheritdoc}
- */
- protected function doFlush()
- {
- foreach ($this->getIterator() as $name => $file) {
- @unlink($name);
- }
- return true;
- }
- /**
- * {@inheritdoc}
- */
- protected function doGetStats()
- {
- $usage = 0;
- foreach ($this->getIterator() as $name => $file) {
- $usage += $file->getSize();
- }
- $free = disk_free_space($this->directory);
- return array(
- Cache::STATS_HITS => null,
- Cache::STATS_MISSES => null,
- Cache::STATS_UPTIME => null,
- Cache::STATS_MEMORY_USAGE => $usage,
- Cache::STATS_MEMORY_AVAILABLE => $free,
- );
- }
- /**
- * @return \Iterator
- */
- private function getIterator()
- {
- $pattern = '/^.+\\' . $this->extension . '$/i';
- $iterator = new \RecursiveDirectoryIterator($this->directory);
- $iterator = new \RecursiveIteratorIterator($iterator);
- return new \RegexIterator($iterator, $pattern);
- }
- }
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