lib/simplepie/autoloader.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) 2004-2022, 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 /**
  46  * PSR-4 implementation for SimplePie.
  47  *
  48  * After registering this autoload function with SPL, the following line
  49  * would cause the function to attempt to load the \SimplePie\SimplePie class
  50  * from /src/SimplePie.php:
  51  *
  52  *      new \SimplePie\SimplePie();
  53  *
  54  * @param string $class The fully-qualified class name.
  55  * @return void
  56  */
  57 spl_autoload_register(function ($class) {
  58
  59     // project-specific namespace prefix
  60     $prefix = 'SimplePie\\';
  61
  62     // base directory for the namespace prefix
  63     $base_dir = __DIR__ . '/src/';
  64
  65     // does the class use the namespace prefix?
  66     $len = strlen($prefix);
  67     if (strncmp($prefix, $class, $len) !== 0) {
  68         // no, move to the next registered autoloader
  69         return;
  70     }
  71
  72     // get the relative class name
  73     $relative_class = substr($class, $len);
  74
  75     // replace the namespace prefix with the base directory, replace namespace
  76     // separators with directory separators in the relative class name, append
  77     // with .php
  78     $file = $base_dir . str_replace('\\', '/', $relative_class) . '.php';
  79
  80     // if the file exists, require it
  81     if (file_exists($file)) {
  82         require $file;
  83     }
  84 });
  85
  86 // autoloader
  87 spl_autoload_register(array(new SimplePie_Autoloader(), 'autoload'));
  88
  89 if (!class_exists('SimplePie'))
  90 {
  91         trigger_error('Autoloader not registered properly', E_USER_ERROR);
  92 }
  93
  94 /**
  95  * Autoloader class
  96  *
  97  * @package SimplePie
  98  * @subpackage API
  99  */
 100 class SimplePie_Autoloader
 101 {
 102         protected $path;
 103
 104         /**
 105          * Constructor
 106          */
 107         public function __construct()
 108         {
 109                 $this->path = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'library';
 110         }
 111
 112         /**
 113          * Autoloader
 114          *
 115          * @param string $class The name of the class to attempt to load.
 116          */
 117         public function autoload($class)
 118         {
 119                 // Only load the class if it starts with "SimplePie"
 120                 if (strpos($class, 'SimplePie') !== 0)
 121                 {
 122                         return;
 123                 }
 124
 125                 $filename = $this->path . DIRECTORY_SEPARATOR . str_replace('_', DIRECTORY_SEPARATOR, $class) . '.php';
 126                 include $filename;
 127         }
 128 }