inc/3rdparty/simplepie/SimplePie/Cache.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
  47 class SimplePie_Cache
  48 {
  49         /**
  50          * Cache handler classes
  51          *
  52          * These receive 3 parameters to their constructor, as documented in
  53          * {@see register()}
  54          * @var array
  55          */
  56         protected static $handlers = array(
  57                 'mysql' => 'SimplePie_Cache_MySQL',
  58                 'memcache' => 'SimplePie_Cache_Memcache',
  59         );
  60
  61         /**
  62          * Don't call the constructor. Please.
  63          */
  64         private function __construct() { }
  65
  66         /**
  67          * Create a new SimplePie_Cache object
  68          */
  69         public static function create($location, $filename, $extension)
  70         {
  71                 $type = explode(':', $location, 2);
  72                 $type = $type[0];
  73                 if (!empty(self::$handlers[$type]))
  74                 {
  75                         $class = self::$handlers[$type];
  76                         return new $class($location, $filename, $extension);
  77                 }
  78
  79                 return new SimplePie_Cache_File($location, $filename, $extension);
  80         }
  81
  82         /**
  83          * Register a handler
  84          *
  85          * @param string $type DSN type to register for
  86          * @param string $class Name of handler class. Must implement SimplePie_Cache_Base
  87          */
  88         public static function register($type, $class)
  89         {
  90                 self::$handlers[$type] = $class;
  91         }
  92
  93         /**
  94          * Parse a URL into an array
  95          *
  96          * @param string $url
  97          * @return array
  98          */
  99         public static function parse_URL($url)
 100         {
 101                 $params = parse_url($url);
 102                 $params['extras'] = array();
 103                 if (isset($params['query']))
 104                 {
 105                         parse_str($params['query'], $params['extras']);
 106                 }
 107                 return $params;
 108         }
 109 }