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<?php namespace Illuminate\Support;
use ReflectionClass;
abstract class ServiceProvider {
/**
* The application instance.
*
* @var \Illuminate\Foundation\Application
*/
protected $app;
/**
* Indicates if loading of the provider is deferred.
*
* @var bool
*/
protected $defer = false;
/**
* Create a new service provider instance.
*
* @param \Illuminate\Foundation\Application $app
* @return void
*/
public function __construct($app)
{
$this->app = $app;
}
/**
* Bootstrap the application events.
*
* @return void
*/
public function boot() {}
/**
* Register the service provider.
*
* @return void
*/
abstract public function register();
/**
* Register the package's component namespaces.
*
* @param string $package
* @param string $namespace
* @param string $path
* @return void
*/
public function package($package, $namespace = null, $path = null)
{
$namespace = $this->getPackageNamespace($package, $namespace);
// In this method we will register the configuration package for the package
// so that the configuration options cleanly cascade into the application
// folder to make the developers lives much easier in maintaining them.
$path = $path ?: $this->guessPackagePath();
$config = $path.'/config';
if ($this->app['files']->isDirectory($config))
{
$this->app['config']->package($package, $config, $namespace);
}
// Next we will check for any "language" components. If language files exist
// we will register them with this given package's namespace so that they
// may be accessed using the translation facilities of the application.
$lang = $path.'/lang';
if ($this->app['files']->isDirectory($lang))
{
$this->app['translator']->addNamespace($namespace, $lang);
}
// Next, we will see if the application view folder contains a folder for the
// package and namespace. If it does, we'll give that folder precedence on
// the loader list for the views so the package views can be overridden.
$appView = $this->getAppViewPath($package);
if ($this->app['files']->isDirectory($appView))
{
$this->app['view']->addNamespace($namespace, $appView);
}
// Finally we will register the view namespace so that we can access each of
// the views available in this package. We use a standard convention when
// registering the paths to every package's views and other components.
$view = $path.'/views';
if ($this->app['files']->isDirectory($view))
{
$this->app['view']->addNamespace($namespace, $view);
}
}
/**
* Guess the package path for the provider.
*
* @return string
*/
public function guessPackagePath()
{
$path = with(new ReflectionClass($this))->getFileName();
return realpath(dirname($path).'/../../');
}
/**
* Determine the namespace for a package.
*
* @param string $package
* @param string $namespace
* @return string
*/
protected function getPackageNamespace($package, $namespace)
{
if (is_null($namespace))
{
list($vendor, $namespace) = explode('/', $package);
}
return $namespace;
}
/**
* Register the package's custom Artisan commands.
*
* @param array $commands
* @return void
*/
public function commands($commands)
{
$commands = is_array($commands) ? $commands : func_get_args();
// To register the commands with Artisan, we will grab each of the arguments
// passed into the method and listen for Artisan "start" event which will
// give us the Artisan console instance which we will give commands to.
$events = $this->app['events'];
$events->listen('artisan.start', function($artisan) use ($commands)
{
$artisan->resolveCommands($commands);
});
}
/**
* Get the application package view path.
*
* @param string $package
* @return string
*/
protected function getAppViewPath($package)
{
return $this->app['path']."/views/packages/{$package}";
}
/**
* Get the services provided by the provider.
*
* @return array
*/
public function provides()
{
return array();
}
/**
* Get the events that trigger this service provider to register.
*
* @return array
*/
public function when()
{
return array();
}
/**
* Determine if the provider is deferred.
*
* @return bool
*/
public function isDeferred()
{
return $this->defer;
}
}
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