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system/Config/AutoloadConfig.php

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+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Config;
+
+/**
+ * AUTOLOADER CONFIGURATION
+ *
+ * This file defines the namespaces and class maps so the Autoloader
+ * can find the files as needed.
+ */
+class AutoloadConfig
+{
+    /**
+     * -------------------------------------------------------------------
+     * Namespaces
+     * -------------------------------------------------------------------
+     * This maps the locations of any namespaces in your application to
+     * their location on the file system. These are used by the autoloader
+     * to locate files the first time they have been instantiated.
+     *
+     * The '/app' and '/system' directories are already mapped for you.
+     * you may change the name of the 'App' namespace if you wish,
+     * but this should be done prior to creating any namespaced classes,
+     * else you will need to modify all of those classes for this to work.
+     *
+     * @var array<string, string>
+     */
+    public $psr4 = [];
+
+    /**
+     * -------------------------------------------------------------------
+     * Class Map
+     * -------------------------------------------------------------------
+     * The class map provides a map of class names and their exact
+     * location on the drive. Classes loaded in this manner will have
+     * slightly faster performance because they will not have to be
+     * searched for within one or more directories as they would if they
+     * were being autoloaded through a namespace.
+     *
+     * @var array<string, string>
+     */
+    public $classmap = [];
+
+    /**
+     * -------------------------------------------------------------------
+     * Files
+     * -------------------------------------------------------------------
+     * The files array provides a list of paths to __non-class__ files
+     * that will be autoloaded. This can be useful for bootstrap operations
+     * or for loading functions.
+     *
+     * @var array<int, string>
+     */
+    public $files = [];
+
+    /**
+     * -------------------------------------------------------------------
+     * Namespaces
+     * -------------------------------------------------------------------
+     * This maps the locations of any namespaces in your application to
+     * their location on the file system. These are used by the autoloader
+     * to locate files the first time they have been instantiated.
+     *
+     * Do not change the name of the CodeIgniter namespace or your application
+     * will break.
+     *
+     * @var array<string, string>
+     */
+    protected $corePsr4 = [
+        'CodeIgniter' => SYSTEMPATH,
+        'App'         => APPPATH, // To ensure filters, etc still found,
+    ];
+
+    /**
+     * -------------------------------------------------------------------
+     * Class Map
+     * -------------------------------------------------------------------
+     * The class map provides a map of class names and their exact
+     * location on the drive. Classes loaded in this manner will have
+     * slightly faster performance because they will not have to be
+     * searched for within one or more directories as they would if they
+     * were being autoloaded through a namespace.
+     *
+     * @var array<string, string>
+     */
+    protected $coreClassmap = [
+        'Psr\Log\AbstractLogger'           => SYSTEMPATH . 'ThirdParty/PSR/Log/AbstractLogger.php',
+        'Psr\Log\InvalidArgumentException' => SYSTEMPATH . 'ThirdParty/PSR/Log/InvalidArgumentException.php',
+        'Psr\Log\LoggerAwareInterface'     => SYSTEMPATH . 'ThirdParty/PSR/Log/LoggerAwareInterface.php',
+        'Psr\Log\LoggerAwareTrait'         => SYSTEMPATH . 'ThirdParty/PSR/Log/LoggerAwareTrait.php',
+        'Psr\Log\LoggerInterface'          => SYSTEMPATH . 'ThirdParty/PSR/Log/LoggerInterface.php',
+        'Psr\Log\LoggerTrait'              => SYSTEMPATH . 'ThirdParty/PSR/Log/LoggerTrait.php',
+        'Psr\Log\LogLevel'                 => SYSTEMPATH . 'ThirdParty/PSR/Log/LogLevel.php',
+        'Psr\Log\NullLogger'               => SYSTEMPATH . 'ThirdParty/PSR/Log/NullLogger.php',
+        'Laminas\Escaper\Escaper'          => SYSTEMPATH . 'ThirdParty/Escaper/Escaper.php',
+    ];
+
+    /**
+     * -------------------------------------------------------------------
+     * Core Files
+     * -------------------------------------------------------------------
+     * List of files from the framework to be autoloaded early.
+     *
+     * @var array<int, string>
+     */
+    protected $coreFiles = [];
+
+    /**
+     * Constructor.
+     *
+     * Merge the built-in and developer-configured psr4 and classmap,
+     * with preference to the developer ones.
+     */
+    public function __construct()
+    {
+        if (isset($_SERVER['CI_ENVIRONMENT']) && $_SERVER['CI_ENVIRONMENT'] === 'testing') {
+            $this->psr4['Tests\Support']                  = SUPPORTPATH;
+            $this->classmap['CodeIgniter\Log\TestLogger'] = SYSTEMPATH . 'Test/TestLogger.php';
+            $this->classmap['CIDatabaseTestCase']         = SYSTEMPATH . 'Test/CIDatabaseTestCase.php';
+        }
+
+        $this->psr4     = array_merge($this->corePsr4, $this->psr4);
+        $this->classmap = array_merge($this->coreClassmap, $this->classmap);
+        $this->files    = array_merge($this->coreFiles, $this->files);
+    }
+}