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   1  <?php
   2  
   3  declare(strict_types=1);
   4  /**
   5   * SimplePie
   6   *
   7   * A PHP-Based RSS and Atom Feed Framework.
   8   * Takes the hard work out of managing a complete RSS/Atom solution.
   9   *
  10   * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
  11   * All rights reserved.
  12   *
  13   * Redistribution and use in source and binary forms, with or without modification, are
  14   * permitted provided that the following conditions are met:
  15   *
  16   *     * Redistributions of source code must retain the above copyright notice, this list of
  17   *       conditions and the following disclaimer.
  18   *
  19   *     * Redistributions in binary form must reproduce the above copyright notice, this list
  20   *       of conditions and the following disclaimer in the documentation and/or other materials
  21   *       provided with the distribution.
  22   *
  23   *     * Neither the name of the SimplePie Team nor the names of its contributors may be used
  24   *       to endorse or promote products derived from this software without specific prior
  25   *       written permission.
  26   *
  27   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
  28   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  29   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
  30   * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  32   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  34   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35   * POSSIBILITY OF SUCH DAMAGE.
  36   *
  37   * @package SimplePie
  38   * @copyright 2004-2022 Ryan Parman, Sam Sneddon, Ryan McCue
  39   * @author Ryan Parman
  40   * @author Sam Sneddon
  41   * @author Ryan McCue
  42   * @link http://simplepie.org/ SimplePie
  43   * @license http://www.opensource.org/licenses/bsd-license.php BSD License
  44   */
  45  
  46  namespace SimplePie\Cache;
  47  
  48  use InvalidArgumentException;
  49  
  50  /**
  51   * Adapter for deprecated \SimplePie\Cache\Base implementations
  52   *
  53   * @package SimplePie
  54   * @subpackage Caching
  55   * @internal
  56   */
  57  final class BaseDataCache implements DataCache
  58  {
  59      /**
  60       * @var Base
  61       */
  62      private $cache;
  63  
  64      public function __construct(Base $cache)
  65      {
  66          $this->cache = $cache;
  67      }
  68  
  69      /**
  70       * Fetches a value from the cache.
  71       *
  72       * Equivalent to \Psr\SimpleCache\CacheInterface::get()
  73       * <code>
  74       * public function get(string $key, mixed $default = null): mixed;
  75       * </code>
  76       *
  77       * @param string $key     The unique key of this item in the cache.
  78       * @param mixed  $default Default value to return if the key does not exist.
  79       *
  80       * @return array|mixed The value of the item from the cache, or $default in case of cache miss.
  81       *
  82       * @throws InvalidArgumentException
  83       *   MUST be thrown if the $key string is not a legal value.
  84       */
  85      public function get_data(string $key, $default = null)
  86      {
  87          $data = $this->cache->load();
  88  
  89          if (! is_array($data)) {
  90              return $default;
  91          }
  92  
  93          // ignore data if internal cache expiration time is not set
  94          if (! array_key_exists('__cache_expiration_time', $data)) {
  95              return $default;
  96          }
  97  
  98          // ignore data if internal cache expiration time is expired
  99          if ($data['__cache_expiration_time'] < time()) {
 100              return $default;
 101          }
 102  
 103          // remove internal cache expiration time
 104          unset($data['__cache_expiration_time']);
 105  
 106          return $data;
 107      }
 108  
 109      /**
 110       * Persists data in the cache, uniquely referenced by a key with an optional expiration TTL time.
 111       *
 112       * Equivalent to \Psr\SimpleCache\CacheInterface::set()
 113       * <code>
 114       * public function set(string $key, mixed $value, null|int|\DateInterval $ttl = null): bool;
 115       * </code>
 116       *
 117       * @param string   $key   The key of the item to store.
 118       * @param array    $value The value of the item to store, must be serializable.
 119       * @param null|int $ttl   Optional. The TTL value of this item. If no value is sent and
 120       *                                      the driver supports TTL then the library may set a default value
 121       *                                      for it or let the driver take care of that.
 122       *
 123       * @return bool True on success and false on failure.
 124       *
 125       * @throws InvalidArgumentException
 126       *   MUST be thrown if the $key string is not a legal value.
 127       */
 128      public function set_data(string $key, array $value, ?int $ttl = null): bool
 129      {
 130          if ($ttl === null) {
 131              $ttl = 3600;
 132          }
 133  
 134          // place internal cache expiration time
 135          $value['__cache_expiration_time'] = time() + $ttl;
 136  
 137          return $this->cache->save($value);
 138      }
 139  
 140      /**
 141       * Delete an item from the cache by its unique key.
 142       *
 143       * Equivalent to \Psr\SimpleCache\CacheInterface::delete()
 144       * <code>
 145       * public function delete(string $key): bool;
 146       * </code>
 147       *
 148       * @param string $key The unique cache key of the item to delete.
 149       *
 150       * @return bool True if the item was successfully removed. False if there was an error.
 151       *
 152       * @throws InvalidArgumentException
 153       *   MUST be thrown if the $key string is not a legal value.
 154       */
 155      public function delete_data(string $key): bool
 156      {
 157          return $this->cache->unlink();
 158      }
 159  }