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1 <?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 |
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45 /** |
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46 * Used to create cache objects |
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47 * |
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48 * This class can be overloaded with {@see SimplePie::set_cache_class()}, |
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49 * although the preferred way is to create your own handler |
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50 * via {@see register()} |
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51 * |
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52 * @package SimplePie |
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53 * @subpackage Caching |
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54 */ |
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55 class SimplePie_Cache |
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56 { |
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57 /** |
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58 * Cache handler classes |
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59 * |
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60 * These receive 3 parameters to their constructor, as documented in |
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61 * {@see register()} |
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62 * @var array |
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63 */ |
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64 protected static $handlers = array( |
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65 'mysql' => 'SimplePie_Cache_MySQL', |
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66 'memcache' => 'SimplePie_Cache_Memcache', |
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67 ); |
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68 |
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69 /** |
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70 * Don't call the constructor. Please. |
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71 */ |
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72 private function __construct() { } |
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73 |
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74 /** |
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75 * Create a new SimplePie_Cache object |
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76 * |
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77 * @param string $location URL location (scheme is used to determine handler) |
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78 * @param string $filename Unique identifier for cache object |
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79 * @param string $extension 'spi' or 'spc' |
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80 * @return SimplePie_Cache_Base Type of object depends on scheme of `$location` |
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81 */ |
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82 public static function get_handler($location, $filename, $extension) |
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83 { |
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84 $type = explode(':', $location, 2); |
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85 $type = $type[0]; |
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86 if (!empty(self::$handlers[$type])) |
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87 { |
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88 $class = self::$handlers[$type]; |
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89 return new $class($location, $filename, $extension); |
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90 } |
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91 |
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92 return new SimplePie_Cache_File($location, $filename, $extension); |
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93 } |
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94 |
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95 /** |
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96 * Create a new SimplePie_Cache object |
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97 * |
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98 * @deprecated Use {@see get_handler} instead |
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99 */ |
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100 public function create($location, $filename, $extension) |
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101 { |
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102 trigger_error('Cache::create() has been replaced with Cache::get_handler(). Switch to the registry system to use this.', E_USER_DEPRECATED); |
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103 return self::get_handler($location, $filename, $extension); |
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104 } |
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105 |
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106 /** |
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107 * Register a handler |
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108 * |
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109 * @param string $type DSN type to register for |
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110 * @param string $class Name of handler class. Must implement SimplePie_Cache_Base |
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111 */ |
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112 public static function register($type, $class) |
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113 { |
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114 self::$handlers[$type] = $class; |
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115 } |
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116 |
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117 /** |
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118 * Parse a URL into an array |
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119 * |
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120 * @param string $url |
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121 * @return array |
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122 */ |
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123 public static function parse_URL($url) |
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124 { |
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125 $params = parse_url($url); |
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126 $params['extras'] = array(); |
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127 if (isset($params['query'])) |
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128 { |
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129 parse_str($params['query'], $params['extras']); |
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130 } |
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131 return $params; |
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132 } |
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133 } |