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<?php |
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namespace ByTIC\EventDispatcher\ListenerProviders\Discover; |
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use ByTIC\EventDispatcher\ListenerProviders\DefaultProvider; |
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/** |
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* Class DiscoverProvider |
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* @package ByTIC\EventDispatcher\ListenerProviders\Discover |
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* |
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* @internal |
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*/ |
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class DiscoverProvider extends DefaultProvider |
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{ |
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protected $discovered = null; |
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protected $discoveryPath = null; |
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/** |
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* @inheritDoc |
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*/ |
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public function getListenersForEvent(object $event): iterable |
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{ |
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$this->discover(); |
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return parent::getListenersForEvent($event); |
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} |
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protected function discover() |
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{ |
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if ($this->discovered !== null) { |
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return; |
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} |
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$this->doDiscovery(); |
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$this->discovered = true; |
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} |
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protected function doDiscovery() |
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{ |
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$eventsArray = DiscoverEvents::within($this->discoverEventsWithin()); |
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foreach ($eventsArray as $event => $listeners) { |
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foreach ($listeners as $listener) { |
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$this->listen($event, $listener); |
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} |
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} |
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} |
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/** |
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* Get the listener directories that should be used to discover events. |
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* |
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* @return array |
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*/ |
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protected function discoverEventsWithin(): array |
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{ |
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if ($this->discoveryPath === null) { |
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$this->discoveryPath = $this->detectDiscoveryPath(); |
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} |
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return $this->discoveryPath; |
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} |
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/** |
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* @param string $path |
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*/ |
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public function addDiscoveryPath(string $path) |
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{ |
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$this->discoveryPath[] = $path; |
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} |
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/** |
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* @return array |
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*/ |
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protected function detectDiscoveryPath(): array |
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{ |
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$paths = $this->detectDiscoveryFromConfig(); |
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if (count($paths)) { |
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return $paths; |
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} |
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return $this->detectDiscoveryFromApplication(); |
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} |
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protected function detectDiscoveryFromConfig(): array |
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{ |
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if (!function_exists('config')) { |
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return []; |
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} |
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$config = config('event-dispatcher.listener_paths'); |
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if (!$config) { |
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return []; |
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} |
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$paths = $config->toArray(); |
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foreach ($paths as $key => $path) { |
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if (!is_dir($path)) { |
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unset($paths[$key]); |
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} |
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} |
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return $paths; |
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} |
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protected function detectDiscoveryFromApplication(): array |
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{ |
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$basePath = $this->detectApplicationPath(); |
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if (!is_dir($basePath)) { |
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return []; |
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} |
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$folder = $basePath . '/Listeners'; |
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if (!is_dir($folder)) { |
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return []; |
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} |
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return [ |
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$folder, |
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]; |
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} |
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/** |
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* @return false|string |
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*/ |
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protected function detectApplicationPath() |
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{ |
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if (defined('APPLICATION_PATH')) { |
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return APPLICATION_PATH; |
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} |
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if (!function_exists('app')) { |
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return false; |
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} |
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$app = app(); |
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if ($app->has('path')) { |
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return $app->get('path'); |
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} |
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return false; |
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} |
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} |
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bytic /
event-dispatcher
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