1<?php
  2
  3// SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue
  4// SPDX-License-Identifier: BSD-3-Clause
  5
  6/**
  7 * PSR-4 implementation for SimplePie.
  8 *
  9 * After registering this autoload function with SPL, the following line
 10 * would cause the function to attempt to load the \SimplePie\SimplePie class
 11 * from /src/SimplePie.php:
 12 *
 13 *      new \SimplePie\SimplePie();
 14 *
 15 * @param string $class The fully-qualified class name.
 16 * @return void
 17 */
 18spl_autoload_register(function ($class) {
 19
 20    // project-specific namespace prefix
 21    $prefix = 'SimplePie\\';
 22
 23    // base directory for the namespace prefix
 24    $base_dir = __DIR__ . '/src/';
 25
 26    // does the class use the namespace prefix?
 27    $len = strlen($prefix);
 28    if (strncmp($prefix, $class, $len) !== 0) {
 29        // no, move to the next registered autoloader
 30        return;
 31    }
 32
 33    // get the relative class name
 34    $relative_class = substr($class, $len);
 35
 36    // replace the namespace prefix with the base directory, replace namespace
 37    // separators with directory separators in the relative class name, append
 38    // with .php
 39    $file = $base_dir . str_replace('\\', '/', $relative_class) . '.php';
 40
 41    // if the file exists, require it
 42    if (file_exists($file)) {
 43        require $file;
 44    }
 45});
 46
 47// autoloader
 48spl_autoload_register(array(new SimplePie_Autoloader(), 'autoload'));
 49
 50if (!class_exists('SimplePie'))
 51{
 52	exit('Autoloader not registered properly');
 53}
 54
 55/**
 56 * Autoloader class
 57 */
 58class SimplePie_Autoloader
 59{
 60	protected $path;
 61
 62	/**
 63	 * Constructor
 64	 */
 65	public function __construct()
 66	{
 67		$this->path = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'library';
 68	}
 69
 70	/**
 71	 * Autoloader
 72	 *
 73	 * @param string $class The name of the class to attempt to load.
 74	 */
 75	public function autoload($class)
 76	{
 77		// Only load the class if it starts with "SimplePie"
 78		if (strpos($class, 'SimplePie') !== 0)
 79		{
 80			return;
 81		}
 82
 83		$filename = $this->path . DIRECTORY_SEPARATOR . str_replace('_', DIRECTORY_SEPARATOR, $class) . '.php';
 84		include $filename;
 85	}
 86}
 87