inc/3rdparty/simplepie/SimplePie/Cache/File.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_File implements SimplePie_Cache_Base
  48 {
  49         protected $location;
  50         protected $filename;
  51         protected $extension;
  52         protected $name;
  53
  54         public function __construct($location, $filename, $extension)
  55         {
  56                 $this->location = $location;
  57                 $this->filename = $filename;
  58                 $this->extension = $extension;
  59                 $this->name = "$this->location/$this->filename.$this->extension";
  60         }
  61
  62         public function save($data)
  63         {
  64                 if (file_exists($this->name) && is_writeable($this->name) || file_exists($this->location) && is_writeable($this->location))
  65                 {
  66                         if (is_a($data, 'SimplePie'))
  67                         {
  68                                 $data = $data->data;
  69                         }
  70
  71                         $data = serialize($data);
  72                         return (bool) file_put_contents($this->name, $data);
  73                 }
  74                 return false;
  75         }
  76
  77         public function load()
  78         {
  79                 if (file_exists($this->name) && is_readable($this->name))
  80                 {
  81                         return unserialize(file_get_contents($this->name));
  82                 }
  83                 return false;
  84         }
  85
  86         public function mtime()
  87         {
  88                 if (file_exists($this->name))
  89                 {
  90                         return filemtime($this->name);
  91                 }
  92                 return false;
  93         }
  94
  95         public function touch()
  96         {
  97                 if (file_exists($this->name))
  98                 {
  99                         return touch($this->name);
 100                 }
 101                 return false;
 102         }
 103
 104         public function unlink()
 105         {
 106                 if (file_exists($this->name))
 107                 {
 108                         return unlink($this->name);
 109                 }
 110                 return false;
 111         }
 112 }