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Viewing changes to wp-includes/SimplePie/Cache/DB.php

  • Committer: Jacek Nykis
  • Date: 2015-01-05 16:17:05 UTC
  • Revision ID: jacek.nykis@canonical.com-20150105161705-w544l1h5mcg7u4w9
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wp-includes/SimplePie/Cache/DB.php
 
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<?php
 
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/**
 
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 * SimplePie
 
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 *
 
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 * A PHP-Based RSS and Atom Feed Framework.
 
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 * Takes the hard work out of managing a complete RSS/Atom solution.
 
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 *
 
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 * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
 
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 * All rights reserved.
 
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 *
 
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 * Redistribution and use in source and binary forms, with or without modification, are
 
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 * permitted provided that the following conditions are met:
 
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 *
 
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 *      * Redistributions of source code must retain the above copyright notice, this list of
 
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 *        conditions and the following disclaimer.
 
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 *
 
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 *      * Redistributions in binary form must reproduce the above copyright notice, this list
 
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 *        of conditions and the following disclaimer in the documentation and/or other materials
 
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 *        provided with the distribution.
 
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 *
 
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 *      * Neither the name of the SimplePie Team nor the names of its contributors may be used
 
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 *        to endorse or promote products derived from this software without specific prior
 
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 *        written permission.
 
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 *
 
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 
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 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 
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 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
 
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 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 
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 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 
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 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 
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 * POSSIBILITY OF SUCH DAMAGE.
 
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 *
 
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 * @package SimplePie
 
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 * @version 1.3.1
 
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 * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
 
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 * @author Ryan Parman
 
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 * @author Geoffrey Sneddon
 
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 * @author Ryan McCue
 
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 * @link http://simplepie.org/ SimplePie
 
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 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
 
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 */
 
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/**
 
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 * Base class for database-based caches
 
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 *
 
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 * @package SimplePie
 
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 * @subpackage Caching
 
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 */
 
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abstract class SimplePie_Cache_DB implements SimplePie_Cache_Base
 
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{
 
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        /**
 
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         * Helper for database conversion
 
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         *
 
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         * Converts a given {@see SimplePie} object into data to be stored
 
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         *
 
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         * @param SimplePie $data
 
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         * @return array First item is the serialized data for storage, second item is the unique ID for this item
 
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         */
 
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        protected static function prepare_simplepie_object_for_cache($data)
 
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        {
 
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                $items = $data->get_items();
 
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                $items_by_id = array();
 
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                if (!empty($items))
 
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                {
 
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                        foreach ($items as $item)
 
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                        {
 
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                                $items_by_id[$item->get_id()] = $item;
 
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                        }
 
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                        if (count($items_by_id) !== count($items))
 
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                        {
 
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                                $items_by_id = array();
 
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                                foreach ($items as $item)
 
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                                {
 
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                                        $items_by_id[$item->get_id(true)] = $item;
 
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                                }
 
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                        }
 
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                        if (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
 
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                        {
 
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                                $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
 
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                        }
 
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                        elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
 
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                        {
 
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                                $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
 
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                        }
 
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                        elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
 
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                        {
 
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                                $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
 
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                        }
 
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                        elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0]))
 
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                        {
 
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                                $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0];
 
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                        }
 
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                        else
 
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                        {
 
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                                $channel = null;
 
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                        }
 
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                        if ($channel !== null)
 
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                        {
 
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                                if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']))
 
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                                {
 
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                                        unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']);
 
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                                }
 
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                                if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']))
 
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                                {
 
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                                        unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']);
 
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                                }
 
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                                if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']))
 
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                                {
 
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                                        unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']);
 
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                                }
 
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                                if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']))
 
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                                {
 
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                                        unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']);
 
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                                }
 
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                                if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']))
 
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                                {
 
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                                        unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']);
 
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                                }
 
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                        }
 
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                        if (isset($data->data['items']))
 
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                        {
 
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                                unset($data->data['items']);
 
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                        }
 
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                        if (isset($data->data['ordered_items']))
 
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                        {
 
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                                unset($data->data['ordered_items']);
 
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                        }
 
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                }
 
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                return array(serialize($data->data), $items_by_id);
 
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        }
 
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}