Wordpress 3.5

[autoinstalls/wordpress.git] / wp-includes / SimplePie / Cache / DB.php

diff --git a/wp-includes/SimplePie/Cache/DB.php b/wp-includes/SimplePie/Cache/DB.php
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+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *     * Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ *     * Neither the name of the SimplePie Team nor the names of its contributors may be used
+ *       to endorse or promote products derived from this software without specific prior
+ *       written permission.
+ *
+ * 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 HOLDERS
+ * AND 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.
+ *
+ * @package SimplePie
+ * @version 1.3.1
+ * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Geoffrey Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+
+/**
+ * Base class for database-based caches
+ *
+ * @package SimplePie
+ * @subpackage Caching
+ */
+abstract class SimplePie_Cache_DB implements SimplePie_Cache_Base
+{
+       /**
+        * Helper for database conversion
+        *
+        * Converts a given {@see SimplePie} object into data to be stored
+        *
+        * @param SimplePie $data
+        * @return array First item is the serialized data for storage, second item is the unique ID for this item
+        */
+       protected static function prepare_simplepie_object_for_cache($data)
+       {
+               $items = $data->get_items();
+               $items_by_id = array();
+
+               if (!empty($items))
+               {
+                       foreach ($items as $item)
+                       {
+                               $items_by_id[$item->get_id()] = $item;
+                       }
+
+                       if (count($items_by_id) !== count($items))
+                       {
+                               $items_by_id = array();
+                               foreach ($items as $item)
+                               {
+                                       $items_by_id[$item->get_id(true)] = $item;
+                               }
+                       }
+
+                       if (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
+                       {
+                               $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
+                       }
+                       elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
+                       {
+                               $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
+                       }
+                       elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
+                       {
+                               $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
+                       }
+                       elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0]))
+                       {
+                               $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0];
+                       }
+                       else
+                       {
+                               $channel = null;
+                       }
+
+                       if ($channel !== null)
+                       {
+                               if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']))
+                               {
+                                       unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']);
+                               }
+                               if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']))
+                               {
+                                       unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']);
+                               }
+                               if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']))
+                               {
+                                       unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']);
+                               }
+                               if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']))
+                               {
+                                       unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']);
+                               }
+                               if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']))
+                               {
+                                       unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']);
+                               }
+                       }
+                       if (isset($data->data['items']))
+                       {
+                               unset($data->data['items']);
+                       }
+                       if (isset($data->data['ordered_items']))
+                       {
+                               unset($data->data['ordered_items']);
+                       }
+               }
+               return array(serialize($data->data), $items_by_id);
+       }
+}