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Differences Between: [Versions 310 and 400] [Versions 39 and 400] [Versions 400 and 401] [Versions 400 and 402] [Versions 400 and 403]

   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) 2004-2016, Ryan Parman, Sam 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   * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
  37   * @author Ryan Parman
  38   * @author Sam Sneddon
  39   * @author Ryan McCue
  40   * @link http://simplepie.org/ SimplePie
  41   * @license http://www.opensource.org/licenses/bsd-license.php BSD License
  42   */
  43  
  44  /**
  45   * Caches data to the filesystem
  46   *
  47   * @package SimplePie
  48   * @subpackage Caching
  49   */
  50  class SimplePie_Cache_File implements SimplePie_Cache_Base
  51  {
  52  	 /**
  53  	  * Location string
  54  	  *
  55  	  * @see SimplePie::$cache_location
  56  	  * @var string
  57  	  */
  58  	 protected $location;
  59  
  60  	 /**
  61  	  * Filename
  62  	  *
  63  	  * @var string
  64  	  */
  65  	 protected $filename;
  66  
  67  	 /**
  68  	  * File extension
  69  	  *
  70  	  * @var string
  71  	  */
  72  	 protected $extension;
  73  
  74  	 /**
  75  	  * File path
  76  	  *
  77  	  * @var string
  78  	  */
  79  	 protected $name;
  80  
  81  	 /**
  82  	  * Create a new cache object
  83  	  *
  84  	  * @param string $location Location string (from SimplePie::$cache_location)
  85  	  * @param string $name Unique ID for the cache
  86  	  * @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
  87  	  */
  88  	public function __construct($location, $name, $type)
  89  	 {
  90  	 	 $this->location = $location;
  91  	 	 $this->filename = $name;
  92  	 	 $this->extension = $type;
  93  	 	 $this->name = "$this->location/$this->filename.$this->extension";
  94  	 }
  95  
  96  	 /**
  97  	  * Save data to the cache
  98  	  *
  99  	  * @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
 100  	  * @return bool Successfulness
 101  	  */
 102  	public function save($data)
 103  	 {
 104  	 	 if (file_exists($this->name) && is_writable($this->name) || file_exists($this->location) && is_writable($this->location))
 105  	 	 {
 106  	 	 	 if ($data instanceof SimplePie)
 107  	 	 	 {
 108  	 	 	 	 $data = $data->data;
 109  	 	 	 }
 110  
 111  	 	 	 $data = serialize($data);
 112  	 	 	 return (bool) file_put_contents($this->name, $data);
 113  	 	 }
 114  	 	 return false;
 115  	 }
 116  
 117  	 /**
 118  	  * Retrieve the data saved to the cache
 119  	  *
 120  	  * @return array Data for SimplePie::$data
 121  	  */
 122  	public function load()
 123  	 {
 124  	 	 if (file_exists($this->name) && is_readable($this->name))
 125  	 	 {
 126  	 	 	 return unserialize(file_get_contents($this->name));
 127  	 	 }
 128  	 	 return false;
 129  	 }
 130  
 131  	 /**
 132  	  * Retrieve the last modified time for the cache
 133  	  *
 134  	  * @return int Timestamp
 135  	  */
 136  	public function mtime()
 137  	 {
 138  	 	 return @filemtime($this->name);
 139  	 }
 140  
 141  	 /**
 142  	  * Set the last modified time to the current time
 143  	  *
 144  	  * @return bool Success status
 145  	  */
 146  	public function touch()
 147  	 {
 148  	 	 return @touch($this->name);
 149  	 }
 150  
 151  	 /**
 152  	  * Remove the cache
 153  	  *
 154  	  * @return bool Success status
 155  	  */
 156  	public function unlink()
 157  	 {
 158  	 	 if (file_exists($this->name))
 159  	 	 {
 160  	 	 	 return unlink($this->name);
 161  	 	 }
 162  	 	 return false;
 163  	 }
 164  }