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/wp-includes/SimplePie/Cache/DB.php

https://bitbucket.org/abnopanda/wordpress
PHP | 137 lines | 76 code | 5 blank | 56 comment | 11 complexity | 0659bf084f55a303f5922edc62bcfbf6 MD5 | raw file
  1. <?php
  2. /**
  3. * SimplePie
  4. *
  5. * A PHP-Based RSS and Atom Feed Framework.
  6. * Takes the hard work out of managing a complete RSS/Atom solution.
  7. *
  8. * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
  9. * All rights reserved.
  10. *
  11. * Redistribution and use in source and binary forms, with or without modification, are
  12. * permitted provided that the following conditions are met:
  13. *
  14. * * Redistributions of source code must retain the above copyright notice, this list of
  15. * conditions and the following disclaimer.
  16. *
  17. * * Redistributions in binary form must reproduce the above copyright notice, this list
  18. * of conditions and the following disclaimer in the documentation and/or other materials
  19. * provided with the distribution.
  20. *
  21. * * Neither the name of the SimplePie Team nor the names of its contributors may be used
  22. * to endorse or promote products derived from this software without specific prior
  23. * written permission.
  24. *
  25. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
  26. * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  27. * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
  28. * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30. * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  32. * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33. * POSSIBILITY OF SUCH DAMAGE.
  34. *
  35. * @package SimplePie
  36. * @version 1.3.1
  37. * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
  38. * @author Ryan Parman
  39. * @author Geoffrey 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. * Base class for database-based caches
  46. *
  47. * @package SimplePie
  48. * @subpackage Caching
  49. */
  50. abstract class SimplePie_Cache_DB implements SimplePie_Cache_Base
  51. {
  52. /**
  53. * Helper for database conversion
  54. *
  55. * Converts a given {@see SimplePie} object into data to be stored
  56. *
  57. * @param SimplePie $data
  58. * @return array First item is the serialized data for storage, second item is the unique ID for this item
  59. */
  60. protected static function prepare_simplepie_object_for_cache($data)
  61. {
  62. $items = $data->get_items();
  63. $items_by_id = array();
  64. if (!empty($items))
  65. {
  66. foreach ($items as $item)
  67. {
  68. $items_by_id[$item->get_id()] = $item;
  69. }
  70. if (count($items_by_id) !== count($items))
  71. {
  72. $items_by_id = array();
  73. foreach ($items as $item)
  74. {
  75. $items_by_id[$item->get_id(true)] = $item;
  76. }
  77. }
  78. if (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
  79. {
  80. $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
  81. }
  82. elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
  83. {
  84. $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
  85. }
  86. elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
  87. {
  88. $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
  89. }
  90. elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0]))
  91. {
  92. $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0];
  93. }
  94. else
  95. {
  96. $channel = null;
  97. }
  98. if ($channel !== null)
  99. {
  100. if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']))
  101. {
  102. unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']);
  103. }
  104. if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']))
  105. {
  106. unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']);
  107. }
  108. if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']))
  109. {
  110. unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']);
  111. }
  112. if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']))
  113. {
  114. unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']);
  115. }
  116. if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']))
  117. {
  118. unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']);
  119. }
  120. }
  121. if (isset($data->data['items']))
  122. {
  123. unset($data->data['items']);
  124. }
  125. if (isset($data->data['ordered_items']))
  126. {
  127. unset($data->data['ordered_items']);
  128. }
  129. }
  130. return array(serialize($data->data), $items_by_id);
  131. }
  132. }