root / drupal7 / sites / all / libraries / simplepie / library / SimplePie / Cache / File.php @ 41cc1b08
1 | 41cc1b08 | Assos Assos | <?php
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2 | /**
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3 | * SimplePie
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4 | *
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5 | * A PHP-Based RSS and Atom Feed Framework.
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6 | * Takes the hard work out of managing a complete RSS/Atom solution.
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7 | *
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8 | * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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9 | * All rights reserved.
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10 | *
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11 | * Redistribution and use in source and binary forms, with or without modification, are
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12 | * permitted provided that the following conditions are met:
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13 | *
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14 | * * Redistributions of source code must retain the above copyright notice, this list of
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15 | * conditions and the following disclaimer.
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16 | *
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17 | * * Redistributions in binary form must reproduce the above copyright notice, this list
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18 | * of conditions and the following disclaimer in the documentation and/or other materials
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19 | * provided with the distribution.
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20 | *
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21 | * * Neither the name of the SimplePie Team nor the names of its contributors may be used
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22 | * to endorse or promote products derived from this software without specific prior
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23 | * written permission.
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24 | *
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25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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26 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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27 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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28 | * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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30 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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31 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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32 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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33 | * POSSIBILITY OF SUCH DAMAGE.
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34 | *
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35 | * @package SimplePie
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36 | * @version 1.3.1
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37 | * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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38 | * @author Ryan Parman
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39 | * @author Geoffrey Sneddon
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40 | * @author Ryan McCue
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41 | * @link http://simplepie.org/ SimplePie
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42 | * @license http://www.opensource.org/licenses/bsd-license.php BSD License
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43 | */
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44 | |||
45 | /**
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46 | * Caches data to the filesystem
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47 | *
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48 | * @package SimplePie
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49 | * @subpackage Caching
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50 | */
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51 | class SimplePie_Cache_File implements SimplePie_Cache_Base |
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52 | { |
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53 | /**
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54 | * Location string
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55 | *
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56 | * @see SimplePie::$cache_location
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57 | * @var string
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58 | */
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59 | protected $location; |
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60 | |||
61 | /**
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62 | * Filename
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63 | *
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64 | * @var string
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65 | */
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66 | protected $filename; |
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67 | |||
68 | /**
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69 | * File extension
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70 | *
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71 | * @var string
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72 | */
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73 | protected $extension; |
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74 | |||
75 | /**
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76 | * File path
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77 | *
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78 | * @var string
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79 | */
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80 | protected $name; |
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81 | |||
82 | /**
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83 | * Create a new cache object
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84 | *
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85 | * @param string $location Location string (from SimplePie::$cache_location)
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86 | * @param string $name Unique ID for the cache
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87 | * @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
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88 | */
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89 | public function __construct($location, $name, $type) |
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90 | { |
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91 | $this->location = $location; |
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92 | $this->filename = $name; |
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93 | $this->extension = $type; |
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94 | $this->name = "$this->location/$this->filename.$this->extension"; |
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95 | } |
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96 | |||
97 | /**
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98 | * Save data to the cache
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99 | *
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100 | * @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
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101 | * @return bool Successfulness
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102 | */
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103 | public function save($data) |
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104 | { |
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105 | if (file_exists($this->name) && is_writeable($this->name) || file_exists($this->location) && is_writeable($this->location)) |
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106 | { |
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107 | if ($data instanceof SimplePie) |
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108 | { |
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109 | $data = $data->data; |
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110 | } |
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111 | |||
112 | $data = serialize($data); |
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113 | return (bool) file_put_contents($this->name, $data); |
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114 | } |
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115 | return false; |
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116 | } |
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117 | |||
118 | /**
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119 | * Retrieve the data saved to the cache
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120 | *
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121 | * @return array Data for SimplePie::$data
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122 | */
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123 | public function load() |
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124 | { |
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125 | if (file_exists($this->name) && is_readable($this->name)) |
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126 | { |
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127 | return unserialize(file_get_contents($this->name)); |
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128 | } |
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129 | return false; |
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130 | } |
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131 | |||
132 | /**
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133 | * Retrieve the last modified time for the cache
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134 | *
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135 | * @return int Timestamp
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136 | */
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137 | public function mtime() |
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138 | { |
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139 | if (file_exists($this->name)) |
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140 | { |
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141 | return filemtime($this->name); |
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142 | } |
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143 | return false; |
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144 | } |
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145 | |||
146 | /**
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147 | * Set the last modified time to the current time
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148 | *
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149 | * @return bool Success status
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150 | */
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151 | public function touch() |
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152 | { |
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153 | if (file_exists($this->name)) |
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154 | { |
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155 | return touch($this->name); |
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156 | } |
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157 | return false; |
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158 | } |
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159 | |||
160 | /**
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161 | * Remove the cache
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162 | *
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163 | * @return bool Success status
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164 | */
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165 | public function unlink() |
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166 | { |
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167 | if (file_exists($this->name)) |
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168 | { |
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169 | return unlink($this->name); |
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170 | } |
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171 | return false; |
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172 | } |
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173 | } |