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   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  }