loader.php

<?
 
namespace Bitrix\Pull;
 
class Loader
{
    public static function register()
    {
        if (!static::isAlreadyRegistered())
        {
            \spl_autoload_register(array(__CLASS__, "autoLoad"), true);
        }
    }
 
    public static function autoLoad($className)
    {
        $className = ltrim($className, "\\"); // fix web env
        $className = str_replace("\\", '/', $className);
 
        if (preg_match("#[^\\\\/a-zA-Z0-9_]#", $className))
        {
            return;
        }
 
        $fileParts = explode("/", $className);
        if (count($fileParts) < 2)
        {
            return;
        }
 
        $firstNamespace = mb_strtolower($fileParts[0]);
        $secondNamespace = mb_strtolower($fileParts[1]);
 
        if (
            $firstNamespace === "protobuf" ||
            $firstNamespace === "google" && $secondNamespace === "protobuf" ||
            $firstNamespace === "gpbmetadata" && $secondNamespace === "google"
        )
        {
            $documentRoot = $documentRoot = rtrim($_SERVER["DOCUMENT_ROOT"], "/\\");
            $filePath = $documentRoot."/bitrix/modules/pull/vendor/".implode("/", $fileParts).".php";
 
            if (file_exists($filePath))
            {
                require_once($filePath);
            }
        }
    }
 
    private static function isAlreadyRegistered()
    {
        $autoLoaders = spl_autoload_functions();
        if (!$autoLoaders)
        {
            return false;
        }
 
        foreach ($autoLoaders as $autoLoader)
        {
            if (!is_array($autoLoader))
            {
                continue;
            }
 
            list($className, $method) = $autoLoader;
 
            if ($className === __CLASS__)
            {
                return true;
            }
        }
 
        return false;
    }
}