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<?php
/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Test;
/**
* PSR-4 class loader
*/
class ClassLoader
{
/**
* Namespace separator
*/
const NAMESPACE_SEPARATOR = '\\';
/**
* Namespaces
*
* @var array
*/
private $namespaces = array();
/**
* Register a base directory for a namespace prefix
*
* @param string $namespace
* @param string $directory
*
* @return $this
*/
public function registerNamespace($namespace, $directory)
{
$this->namespaces[$namespace] = $directory;
return $this;
}
/**
* Test whether a namespace exists
*
* @param string $namespace
*
* @return bool
*/
public function hasNamespace($namespace)
{
return array_key_exists($namespace, $this->namespaces);
}
/**
* Get the source file of the given class or interface
*
* @param string $class Name of the class or interface
*
* @return string|null
*/
public function getSourceFile($class)
{
foreach ($this->namespaces as $namespace => $dir) {
if ($class === strstr($class, $namespace)) {
$classPath = str_replace(
self::NAMESPACE_SEPARATOR,
DIRECTORY_SEPARATOR,
substr($class, strlen($namespace))
) . '.php';
if (file_exists($file = $dir . $classPath)) {
return $file;
}
}
}
return null;
}
/**
* Load the given class or interface
*
* @param string $class Name of the class or interface
*
* @return bool Whether the class or interface has been loaded
*/
public function loadClass($class)
{
if ($file = $this->getSourceFile($class)) {
require $file;
return true;
}
return false;
}
/**
* Register {@link loadClass()} as an autoloader
*/
public function register()
{
spl_autoload_register(array($this, 'loadClass'));
}
/**
* Unregister {@link loadClass()} as an autoloader
*/
public function unregister()
{
spl_autoload_unregister(array($this, 'loadClass'));
}
/**
* Unregister this as an autoloader
*/
public function __destruct()
{
$this->unregister();
}
}
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