inc/3rdparty/simplepie/SimplePie/Cache/DB.php

   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) 2004-2009, 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-dev
  37  * @copyright 2004-2010 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  * @todo phpDoc comments
  44  */
  45
  46 abstract class SimplePie_Cache_DB implements SimplePie_Cache_Base
  47 {
  48         protected static function prepare_simplepie_object_for_cache(&$data)
  49         {
  50                 $items = $data->get_items();
  51                 $items_by_id = array();
  52
  53                 if (!empty($items))
  54                 {
  55                         foreach ($items as $item)
  56                         {
  57                                 $items_by_id[$item->get_id()] = $item;
  58                         }
  59
  60                         if (count($items_by_id) !== count($items))
  61                         {
  62                                 $items_by_id = array();
  63                                 foreach ($items as $item)
  64                                 {
  65                                         $items_by_id[$item->get_id(true)] = $item;
  66                                 }
  67                         }
  68
  69                         if (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
  70                         {
  71                                 $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
  72                         }
  73                         elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
  74                         {
  75                                 $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
  76                         }
  77                         elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
  78                         {
  79                                 $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
  80                         }
  81                         elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0]))
  82                         {
  83                                 $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0];
  84                         }
  85                         else
  86                         {
  87                                 $channel = null;
  88                         }
  89
  90                         if ($channel !== null)
  91                         {
  92                                 if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']))
  93                                 {
  94                                         unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']);
  95                                 }
  96                                 if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']))
  97                                 {
  98                                         unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']);
  99                                 }
 100                                 if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']))
 101                                 {
 102                                         unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']);
 103                                 }
 104                                 if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']))
 105                                 {
 106                                         unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']);
 107                                 }
 108                                 if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']))
 109                                 {
 110                                         unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']);
 111                                 }
 112                         }
 113                         if (isset($data->data['items']))
 114                         {
 115                                 unset($data->data['items']);
 116                         }
 117                         if (isset($data->data['ordered_items']))
 118                         {
 119                                 unset($data->data['ordered_items']);
 120                         }
 121                 }
 122                 return array(serialize($data->data), $items_by_id);
 123         }
 124 }