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<?php namespace Illuminate\Routing;

use ReflectionClass, ReflectionMethod;

class ControllerInspector {

/**
	 * An array of HTTP verbs.
	 *
	 * @var array
	 */
	protected $verbs = array(
		'any', 'get', 'post', 'put', 'patch',
		'delete', 'head', 'options'
	);

/**
	 * Get the routable methods for a controller.
	 *
	 * @param  string  $controller
	 * @param  string  $prefix
	 * @return array
	 */
	public function getRoutable($controller, $prefix)
	{
		$routable = array();

$reflection = new ReflectionClass($controller);

$methods = $reflection->getMethods(ReflectionMethod::IS_PUBLIC);

// To get the routable methods, we will simply spin through all methods on the
		// controller instance checking to see if it belongs to the given class and
		// is a publicly routable method. If so, we will add it to this listings.
		foreach ($methods as $method)
		{
			if ($this->isRoutable($method))
			{
				$data = $this->getMethodData($method, $prefix);

$routable[$method->name][] = $data;

// If the routable method is an index method, we will create a special index
				// route which is simply the prefix and the verb and does not contain any
				// the wildcard place-holders that each "typical" routes would contain.
				if ($data['plain'] == $prefix.'/index')
				{
					$routable[$method->name][] = $this->getIndexData($data, $prefix);
				}
			}
		}

return $routable;
	}

/**
	 * Determine if the given controller method is routable.
	 *
	 * @param  \ReflectionMethod  $method
	 * @return bool
	 */
	public function isRoutable(ReflectionMethod $method)
	{
		if ($method->class == 'Illuminate\Routing\Controller') return false;

return starts_with($method->name, $this->verbs);
	}

/**
	 * Get the method data for a given method.
	 *
	 * @param  \ReflectionMethod  $method
	 * @param  string  $prefix
	 * @return array
	 */
	public function getMethodData(ReflectionMethod $method, $prefix)
	{
		$verb = $this->getVerb($name = $method->name);

$uri = $this->addUriWildcards($plain = $this->getPlainUri($name, $prefix));

return compact('verb', 'plain', 'uri');
	}

/**
	 * Get the routable data for an index method.
	 *
	 * @param  array   $data
	 * @param  string  $prefix
	 * @return array
	 */
	protected function getIndexData($data, $prefix)
	{
		return array('verb' => $data['verb'], 'plain' => $prefix, 'uri' => $prefix);
	}

/**
	 * Extract the verb from a controller action.
	 *
	 * @param  string  $name
	 * @return string
	 */
	public function getVerb($name)
	{
		return head(explode('_', snake_case($name)));
	}

/**
	 * Determine the URI from the given method name.
	 *
	 * @param  string  $name
	 * @param  string  $prefix
	 * @return string
	 */
	public function getPlainUri($name, $prefix)
	{
		return $prefix.'/'.implode('-', array_slice(explode('_', snake_case($name)), 1));
	}

/**
	 * Add wildcards to the given URI.
	 *
	 * @param  string  $uri
	 * @return string
	 */
	public function addUriWildcards($uri)
	{
		return $uri.'/{one?}/{two?}/{three?}/{four?}/{five?}';
	}

}

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