Просмотр файла vendor/doctrine/cache/lib/Doctrine/Common/Cache/FilesystemCache.php

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  1. <?php
  2. /*
  3.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  4.  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  5.  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  6.  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  7.  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  8.  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  9.  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  10.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  11.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  12.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  13.  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  14.  *
  15.  * This software consists of voluntary contributions made by many individuals
  16.  * and is licensed under the MIT license. For more information, see
  17.  * <http://www.doctrine-project.org>.
  18.  */
  19.  
  20. namespace Doctrine\Common\Cache;
  21.  
  22. /**
  23.  * Filesystem cache driver.
  24.  *
  25.  * @since  2.3
  26.  * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
  27.  */
  28. class FilesystemCache extends FileCache
  29. {
  30.     const EXTENSION = '.doctrinecache.data';
  31.  
  32.     /**
  33.      * {@inheritdoc}
  34.      */
  35.     public function __construct($directory, $extension = self::EXTENSION, $umask = 0002)
  36.     {
  37.         parent::__construct($directory, $extension, $umask);
  38.     }
  39.  
  40.     /**
  41.      * {@inheritdoc}
  42.      */
  43.     protected function doFetch($id)
  44.     {
  45.         $data     = '';
  46.         $lifetime = -1;
  47.         $filename = $this->getFilename($id);
  48.  
  49.         if ( ! is_file($filename)) {
  50.             return false;
  51.         }
  52.  
  53.         $resource = fopen($filename, "r");
  54.  
  55.         if (false !== ($line = fgets($resource))) {
  56.             $lifetime = (int) $line;
  57.         }
  58.  
  59.         if ($lifetime !== 0 && $lifetime < time()) {
  60.             fclose($resource);
  61.  
  62.             return false;
  63.         }
  64.  
  65.         while (false !== ($line = fgets($resource))) {
  66.             $data .= $line;
  67.         }
  68.  
  69.         fclose($resource);
  70.  
  71.         return unserialize($data);
  72.     }
  73.  
  74.     /**
  75.      * {@inheritdoc}
  76.      */
  77.     protected function doContains($id)
  78.     {
  79.         $lifetime = -1;
  80.         $filename = $this->getFilename($id);
  81.  
  82.         if ( ! is_file($filename)) {
  83.             return false;
  84.         }
  85.  
  86.         $resource = fopen($filename, "r");
  87.  
  88.         if (false !== ($line = fgets($resource))) {
  89.             $lifetime = (int) $line;
  90.         }
  91.  
  92.         fclose($resource);
  93.  
  94.         return $lifetime === 0 || $lifetime > time();
  95.     }
  96.  
  97.     /**
  98.      * {@inheritdoc}
  99.      */
  100.     protected function doSave($id, $data, $lifeTime = 0)
  101.     {
  102.         if ($lifeTime > 0) {
  103.             $lifeTime = time() + $lifeTime;
  104.         }
  105.  
  106.         $data      = serialize($data);
  107.         $filename  = $this->getFilename($id);
  108.  
  109.         return $this->writeFile($filename, $lifeTime . PHP_EOL . $data);
  110.     }
  111. }