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137 lines
4.6 KiB
137 lines
4.6 KiB
<?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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