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<?php
/**
* @link http://github.com/zendframework/zend-servicemanager for the canonical source repository
* @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\ServiceManager;
use Zend\Stdlib\ArrayUtils\MergeRemoveKey;
use Zend\Stdlib\ArrayUtils\MergeReplaceKeyInterface;
/**
* Object for defining configuration and configuring an existing service manager instance.
*
* In order to provide configuration merging capabilities, this class implements
* the same functionality as `Zend\Stdlib\ArrayUtils::merge()`. That routine
* allows developers to specifically shape how values are merged:
*
* - A value which is an instance of `MergeRemoveKey` indicates the value should
* be removed during merge.
* - A value that is an instance of `MergeReplaceKeyInterface` indicates that the
* value it contains should be used to replace any previous versions.
*
* These features are advanced, and not typically used. If you wish to use them,
* you will need to require the zend-stdlib package in your application.
*/
class Config implements ConfigInterface
{
/**
* @var array
*/
private $allowedKeys = [
'abstract_factories' => true,
'aliases' => true,
'delegators' => true,
'factories' => true,
'initializers' => true,
'invokables' => true,
'lazy_services' => true,
'services' => true,
'shared' => true,
];
/**
* @var array
*/
protected $config = [
'abstract_factories' => [],
'aliases' => [],
'delegators' => [],
'factories' => [],
'initializers' => [],
'invokables' => [],
'lazy_services' => [],
'services' => [],
'shared' => [],
];
/**
* @param array $config
*/
public function __construct(array $config = [])
{
// Only merge keys we're interested in
foreach (array_keys($config) as $key) {
if (! isset($this->allowedKeys[$key])) {
unset($config[$key]);
}
}
$this->config = $this->merge($this->config, $config);
}
/**
* @inheritdoc
*/
public function configureServiceManager(ServiceManager $serviceManager)
{
return $serviceManager->configure($this->config);
}
/**
* @inheritdoc
*/
public function toArray()
{
return $this->config;
}
/**
* Copy paste from https://github.com/zendframework/zend-stdlib/commit/26fcc32a358aa08de35625736095cb2fdaced090
* to keep compatibility with previous version
*
* @link https://github.com/zendframework/zend-servicemanager/pull/68
*/
private function merge(array $a, array $b)
{
foreach ($b as $key => $value) {
if ($value instanceof MergeReplaceKeyInterface) {
$a[$key] = $value->getData();
} elseif (isset($a[$key]) || array_key_exists($key, $a)) {
if ($value instanceof MergeRemoveKey) {
unset($a[$key]);
} elseif (is_int($key)) {
$a[] = $value;
} elseif (is_array($value) && is_array($a[$key])) {
$a[$key] = $this->merge($a[$key], $value);
} else {
$a[$key] = $value;
}
} else {
if (! $value instanceof MergeRemoveKey) {
$a[$key] = $value;
}
}
}
return $a;
}
}
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