Chris@17: <?php
Chris@17: namespace Consolidation\AnnotatedCommand;
Chris@17: 
Chris@17: /**
Chris@17:  * Prepare parameter list for execurion. Handle injection of any
Chris@17:  * special values (e.g. $input and $output) into the parameter list.
Chris@17:  */
Chris@17: class ParameterInjection implements ParameterInjector
Chris@17: {
Chris@17:     public function __construct()
Chris@17:     {
Chris@17:         $this->register('Symfony\Component\Console\Input\InputInterface', $this);
Chris@17:         $this->register('Symfony\Component\Console\Output\OutputInterface', $this);
Chris@17:     }
Chris@17: 
Chris@17:     public function register($interfaceName, ParameterInjector $injector)
Chris@17:     {
Chris@17:         $this->injectors[$interfaceName] = $injector;
Chris@17:     }
Chris@17: 
Chris@17:     public function args($commandData)
Chris@17:     {
Chris@17:         return array_merge(
Chris@17:             $commandData->injectedInstances(),
Chris@17:             $commandData->getArgsAndOptions()
Chris@17:         );
Chris@17:     }
Chris@17: 
Chris@17:     public function injectIntoCommandData($commandData, $injectedClasses)
Chris@17:     {
Chris@17:         foreach ($injectedClasses as $injectedClass) {
Chris@17:             $injectedInstance = $this->getInstanceToInject($commandData, $injectedClass);
Chris@17:             $commandData->injectInstance($injectedInstance);
Chris@17:         }
Chris@17:     }
Chris@17: 
Chris@17:     protected function getInstanceToInject(CommandData $commandData, $interfaceName)
Chris@17:     {
Chris@17:         if (!isset($this->injectors[$interfaceName])) {
Chris@17:             return null;
Chris@17:         }
Chris@17: 
Chris@17:         return $this->injectors[$interfaceName]->get($commandData, $interfaceName);
Chris@17:     }
Chris@17: 
Chris@17:     public function get(CommandData $commandData, $interfaceName)
Chris@17:     {
Chris@17:         switch ($interfaceName) {
Chris@17:             case 'Symfony\Component\Console\Input\InputInterface':
Chris@17:                 return $commandData->input();
Chris@17:             case 'Symfony\Component\Console\Output\OutputInterface':
Chris@17:                 return $commandData->output();
Chris@17:         }
Chris@17: 
Chris@17:         return null;
Chris@17:     }
Chris@17: }