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<?php
/*
* This file is part of SwiftMailer.
* (c) 2004-2009 Chris Corbyn
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* General utility class in Swift Mailer, not to be instantiated.
*
* @author Chris Corbyn
*/
abstract class Swift
{
const VERSION = '6.3.0';
public static $initialized = false;
public static $inits = [];
/**
* Registers an initializer callable that will be called the first time
* a SwiftMailer class is autoloaded.
*
* This enables you to tweak the default configuration in a lazy way.
*
* @param mixed $callable A valid PHP callable that will be called when autoloading the first Swift class
*/
public static function init($callable)
{
self::$inits[] = $callable;
}
/**
* Internal autoloader for spl_autoload_register().
*
* @param string $class
*/
public static function autoload($class)
{
// Don't interfere with other autoloaders
if (0 !== strpos($class, 'Swift_')) {
return;
}
$path = __DIR__.'/'.str_replace('_', '/', $class).'.php';
if (!file_exists($path)) {
return;
}
require $path;
if (self::$inits && !self::$initialized) {
self::$initialized = true;
foreach (self::$inits as $init) {
\call_user_func($init);
}
}
}
/**
* Configure autoloading using Swift Mailer.
*
* This is designed to play nicely with other autoloaders.
*
* @param mixed $callable A valid PHP callable that will be called when autoloading the first Swift class
*/
public static function registerAutoload($callable = null)
{
if (null !== $callable) {
self::$inits[] = $callable;
}
spl_autoload_register(['Swift', 'autoload']);
}
}
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