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   1  <?php
   2  
   3  /**
   4   * SimplePie
   5   *
   6   * A PHP-Based RSS and Atom Feed Framework.
   7   * Takes the hard work out of managing a complete RSS/Atom solution.
   8   *
   9   * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
  10   * All rights reserved.
  11   *
  12   * Redistribution and use in source and binary forms, with or without modification, are
  13   * permitted provided that the following conditions are met:
  14   *
  15   *     * Redistributions of source code must retain the above copyright notice, this list of
  16   *       conditions and the following disclaimer.
  17   *
  18   *     * Redistributions in binary form must reproduce the above copyright notice, this list
  19   *       of conditions and the following disclaimer in the documentation and/or other materials
  20   *       provided with the distribution.
  21   *
  22   *     * Neither the name of the SimplePie Team nor the names of its contributors may be used
  23   *       to endorse or promote products derived from this software without specific prior
  24   *       written permission.
  25   *
  26   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
  27   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  28   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
  29   * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  33   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34   * POSSIBILITY OF SUCH DAMAGE.
  35   *
  36   * @package SimplePie
  37   * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
  38   * @author Ryan Parman
  39   * @author Sam Sneddon
  40   * @author Ryan McCue
  41   * @link http://simplepie.org/ SimplePie
  42   * @license http://www.opensource.org/licenses/bsd-license.php BSD License
  43   */
  44  
  45  namespace SimplePie;
  46  
  47  /**
  48   * Manages `<media:copyright>` copyright tags as defined in Media RSS
  49   *
  50   * Used by {@see \SimplePie\Enclosure::get_copyright()}
  51   *
  52   * This class can be overloaded with {@see \SimplePie\SimplePie::set_copyright_class()}
  53   *
  54   * @package SimplePie
  55   * @subpackage API
  56   */
  57  class Copyright
  58  {
  59      /**
  60       * Copyright URL
  61       *
  62       * @var string
  63       * @see get_url()
  64       */
  65      public $url;
  66  
  67      /**
  68       * Attribution
  69       *
  70       * @var string
  71       * @see get_attribution()
  72       */
  73      public $label;
  74  
  75      /**
  76       * Constructor, used to input the data
  77       *
  78       * For documentation on all the parameters, see the corresponding
  79       * properties and their accessors
  80       */
  81      public function __construct($url = null, $label = null)
  82      {
  83          $this->url = $url;
  84          $this->label = $label;
  85      }
  86  
  87      /**
  88       * String-ified version
  89       *
  90       * @return string
  91       */
  92      public function __toString()
  93      {
  94          // There is no $this->data here
  95          return md5(serialize($this));
  96      }
  97  
  98      /**
  99       * Get the copyright URL
 100       *
 101       * @return string|null URL to copyright information
 102       */
 103      public function get_url()
 104      {
 105          if ($this->url !== null) {
 106              return $this->url;
 107          }
 108  
 109          return null;
 110      }
 111  
 112      /**
 113       * Get the attribution text
 114       *
 115       * @return string|null
 116       */
 117      public function get_attribution()
 118      {
 119          if ($this->label !== null) {
 120              return $this->label;
 121          }
 122  
 123          return null;
 124      }
 125  }
 126  
 127  class_alias('SimplePie\Copyright', 'SimplePie_Copyright');