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<?php |
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namespace HexMakina\LeMarchand; |
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use Psr\Container\{ContainerInterface, ContainerExceptionInterface, NotFoundExceptionInterface}; |
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class LeMarchand implements ContainerInterface |
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{ |
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private static $instance = null; |
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// stores all the settings |
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private $configurations = []; |
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// stores the namespace cascade |
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private $namespace_cascade = []; |
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// stores the interface to class wiring |
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private $interface_wiring = []; |
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// public const RX_CONTROLLER_NAME = '/([a-zA-Z]+)Controller$/'; |
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// public const RX_MODEL_CLASS = '/([a-zA-Z]+)(Class|Model)$/'; |
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const RX_SETTINGS = '/^settings\./'; |
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// public const RX_INTERFACE_NAME = '/([a-zA-Z]+)Interface$/'; |
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const RX_CLASS_NAME = '/([a-zA-Z]+)(Class|Model|Controller|Interface)$/'; |
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public static function box($settings = null): ContainerInterface |
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{ |
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if (is_null(self::$instance)) { |
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if (is_array($settings)) { |
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return (self::$instance = new LeMarchand($settings)); |
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} |
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throw new LamentException('UNABLE_TO_OPEN_BOX'); |
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} |
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return self::$instance; |
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} |
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private function __construct($settings) |
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{ |
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$this->configurations['settings'] = $settings; |
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$this->namespace_cascade = $settings['LeMarchand']['cascade']; |
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$this->interface_wiring = $settings['LeMarchand']['wiring']; |
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} |
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public function __debugInfo(): array |
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{ |
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$dbg = get_object_vars($this); |
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if (isset($dbg['configurations']['template_engine'])) { |
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// way too long of an object |
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$dbg['configurations']['template_engine'] = get_class($dbg['configurations']['template_engine']); |
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} |
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return $dbg; |
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} |
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public function put($configuration, $instance) |
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{ |
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if (!is_string($configuration)) { |
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throw new LamentException($configuration); |
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} |
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$this->configurations[$configuration] = $instance; |
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} |
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public function has($configuration) |
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{ |
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try { |
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$this->get($configuration); |
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return true; |
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} catch (NotFoundExceptionInterface $e) { |
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return false; |
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} catch (ContainerExceptionInterface $e) { |
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return false; |
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} |
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} |
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public function get($configuration) |
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{ |
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if (!is_string($configuration)) { |
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throw new LamentException($configuration); |
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} |
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// 1. is it a first level key ? |
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if (isset($this->configurations[$configuration])) { |
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return $this->configurations[$configuration]; |
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} |
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// 2. is it configuration data ? |
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if (preg_match(self::RX_SETTINGS, $configuration, $m) === 1) { |
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return $this->getSettings($configuration); |
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} |
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// 3. is it a class |
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if (preg_match(self::RX_CLASS_NAME, $configuration, $m) === 1) { |
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return $this->classification($m[1], $m[2]); |
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} |
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throw new ConfigurationException($configuration); |
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} |
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private function getSettings($setting) |
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{ |
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// vdt(__FUNCTION__); |
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$ret = $this->configurations; |
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//dot based hierarchy, parse and climb |
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foreach (explode('.', $setting) as $k) { |
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if (!isset($ret[$k])) { |
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throw new ConfigurationException($setting); |
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} |
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$ret = $ret[$k]; |
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} |
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return $ret; |
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} |
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private function classification($name, $type) |
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{ |
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if ($type === 'Interface') { |
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return $this->wireInstance($name.$type); |
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} |
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$class_name = $this->cascadeNamespace($name, $type); |
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if ($type === 'Class') { |
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return $class_name; |
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} |
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return $this->getInstance($class_name); |
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} |
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private function cascadeNamespace($class_name, $mvc_type = null) |
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{ |
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// does the name already exists ? |
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if (class_exists($class_name)) { |
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return $class_name; |
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} |
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if ($mvc_type === 'Class') { |
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$mvc_type = 'Model'; |
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} |
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if ($mvc_type === 'Controller') { |
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$class_name = $class_name . 'Controller'; |
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} |
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// not fully namespaced, lets cascade |
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foreach ($this->namespace_cascade as $ns) { |
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if (class_exists($full_name = $ns . $mvc_type . 's\\' . $class_name)) { |
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return $full_name; |
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} |
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} |
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throw new ConfigurationException($class_name); |
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} |
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private function wireInstance($interface) |
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{ |
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$wire = $this->getSettings('settings.interface_implementations'); |
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if (!isset($wire[$interface])) { |
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throw new ConfigurationException($interface); |
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} |
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return $this->getInstance($wire[$interface]); |
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} |
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private function getInstance($class) |
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{ |
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try { |
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$rc = new \ReflectionClass($class); |
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$instance = null; |
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$construction_args = []; |
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if (!is_null($rc->getConstructor())) { |
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foreach ($rc->getConstructor()->getParameters() as $param) { |
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$construction_args [] = $this->get($param->getType() . ''); |
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} |
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$instance = $rc->newInstanceArgs($construction_args); |
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} else { |
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$instance = $rc->newInstanceArgs(); |
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} |
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if ($rc->hasMethod('set_container')) { |
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$instance->set_container($this); |
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} |
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return $instance; |
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} catch (\ReflectionException $e) { |
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return null; |
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} |
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} |
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} |
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HexMakina /
LeMarchand
