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1 year ago
<?php declare(strict_types = 0);
/*
** Zabbix
** Copyright (C) 2001-2023 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/**
* The Zabbix autoloader class.
*/
class CAutoloader {
/**
* Registered namespace array. Key is namespace name with trailing '\' and value is array of directories
* relative path with trailing '/'.
*
* @var array
*/
protected $namespaces = [];
/**
* Register supported namespace.
*
* @param string $namespace Namespace value without trailing '\'.
* @param array $paths Array of namespace files directory absolute path without trailing '/'.
*/
public function addNamespace(string $namespace, array $paths): void {
foreach ($paths as $path) {
$path = realpath($path);
if ($path) {
$this->namespaces[$namespace][] = $path.'/';
}
}
}
/**
* Add "loadClass" method as an autoload handler.
*
* @return bool
*/
public function register(): bool {
return spl_autoload_register([$this, 'loadClass']);
}
/**
* Attempts to find and load the given class.
*
* @param string $class_name
*
* @return bool
*/
protected function loadClass(string $class_name): bool {
$chunks = explode('\\', $class_name);
$file_name = array_pop($chunks).'.php';
do {
$namespace = implode('\\', $chunks);
if (array_key_exists($namespace, $this->namespaces)) {
foreach ($this->namespaces[$namespace] as $dir) {
if (is_file($dir.$file_name)) {
require $dir.$file_name;
return true;
}
}
}
if ($chunks) {
$file_name = strtolower(array_pop($chunks)).'/'.$file_name;
}
} while ($chunks);
return false;
}
}