138 lines
4.6 KiB
PHP
138 lines
4.6 KiB
PHP
<?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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}
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