slider-blocks / includes / Autoloader.php

Autoloader.php in GutSlider – All in One Slider and Carousel Blocks for Gutenberg 2.13.0, at includes/Autoloader.php

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1	<?php
2	/**
3	* PSR-4 Autoloader for the GutSlider namespace.
4	*
5	* Maps GutSlider\Foo\Bar to includes/Foo/Bar.php.
6	*
7	* @package GutSlider
8	* @since 3.0.0
9	*/
10
11	if ( ! defined( 'ABSPATH' ) ) {
12	exit;
13	}
14
15	/**
16	* Class GutSlider_Autoloader
17	*
18	* Handles PSR-4 autoloading for all classes within the GutSlider namespace.
19	* This class is intentionally not namespaced because it must be loaded via
20	* require_once before the autoloader is registered.
21	*
22	* @since 3.0.0
23	*/
24	final class GutSlider_Autoloader {
25
26	/**
27	* The namespace prefix for GutSlider classes.
28	*
29	* @var string
30	*/
31	private const NAMESPACE_PREFIX = 'GutSlider\\';
32
33	/**
34	* Base directory for the namespace prefix.
35	*
36	* @var string
37	*/
38	private string $base_dir;
39
40	/**
41	* Constructor.
42	*
43	* @since 3.0.0
44	*
45	* @param string $base_dir The base directory where namespaced classes reside.
46	*/
47	public function __construct( string $base_dir ) {
48	$this->base_dir = rtrim( $base_dir, DIRECTORY_SEPARATOR ) . DIRECTORY_SEPARATOR;
49	}
50
51	/**
52	* Register the autoloader with spl_autoload_register.
53	*
54	* @since 3.0.0
55	*
56	* @return void
57	*/
58	public function register(): void {
59	spl_autoload_register( array( $this, 'autoload' ) );
60	}
61
62	/**
63	* Autoload a class file based on its fully-qualified class name.
64	*
65	* @since 3.0.0
66	*
67	* @param string $class The fully-qualified class name.
68	* @return void
69	*/
70	public function autoload( string $class ): void {
71	if ( strpos( $class, self::NAMESPACE_PREFIX ) !== 0 ) {
72	return;
73	}
74
75	$relative_class = substr( $class, strlen( self::NAMESPACE_PREFIX ) );
76	$file = $this->base_dir . str_replace( '\\', DIRECTORY_SEPARATOR, $relative_class ) . '.php';
77
78	if ( file_exists( $file ) ) {
79	require_once $file;
80	}
81	}
82	}
83