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<?php
namespace Illuminate\Routing;
use Closure;
use LogicException;
use ReflectionMethod;
use ReflectionFunction;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Http\Request;
use UnexpectedValueException;
use Illuminate\Container\Container;
use Illuminate\Routing\Matching\UriValidator;
use Illuminate\Routing\Matching\HostValidator;
use Illuminate\Routing\Matching\MethodValidator;
use Illuminate\Routing\Matching\SchemeValidator;
use Symfony\Component\Routing\Route as SymfonyRoute;
use Illuminate\Http\Exception\HttpResponseException;
class Route
{
use RouteDependencyResolverTrait;
/**
* The URI pattern the route responds to.
*
* @var string
*/
protected $uri;
/**
* The HTTP methods the route responds to.
*
* @var array
*/
protected $methods;
/**
* The route action array.
*
* @var array
*/
protected $action;
/**
* The default values for the route.
*
* @var array
*/
protected $defaults = [];
/**
* The regular expression requirements.
*
* @var array
*/
protected $wheres = [];
/**
* The array of matched parameters.
*
* @var array
*/
protected $parameters;
/**
* The parameter names for the route.
*
* @var array|null
*/
protected $parameterNames;
/**
* The compiled version of the route.
*
* @var \Symfony\Component\Routing\CompiledRoute
*/
protected $compiled;
/**
* The router instance used by the route.
*
* @var \Illuminate\Routing\Router
*/
protected $router;
/**
* The container instance used by the route.
*
* @var \Illuminate\Container\Container
*/
protected $container;
/**
* The validators used by the routes.
*
* @var array
*/
public static $validators;
/**
* Create a new Route instance.
*
* @param array|string $methods
* @param string $uri
* @param \Closure|array $action
* @return void
*/
public function __construct($methods, $uri, $action)
{
$this->uri = $uri;
$this->methods = (array) $methods;
$this->action = $this->parseAction($action);
if (in_array('GET', $this->methods) && ! in_array('HEAD', $this->methods)) {
$this->methods[] = 'HEAD';
}
if (isset($this->action['prefix'])) {
$this->prefix($this->action['prefix']);
}
}
/**
* Run the route action and return the response.
*
* @param \Illuminate\Http\Request $request
* @return mixed
*/
public function run(Request $request)
{
$this->container = $this->container ?: new Container;
try {
if (! is_string($this->action['uses'])) {
return $this->runCallable($request);
}
return $this->runController($request);
} catch (HttpResponseException $e) {
return $e->getResponse();
}
}
/**
* Run the route action and return the response.
*
* @param \Illuminate\Http\Request $request
* @return mixed
*/
protected function runCallable(Request $request)
{
$parameters = $this->resolveMethodDependencies(
$this->parametersWithoutNulls(), new ReflectionFunction($this->action['uses'])
);
return call_user_func_array($this->action['uses'], $parameters);
}
/**
* Run the route action and return the response.
*
* @param \Illuminate\Http\Request $request
* @return mixed
*
* @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
*/
protected function runController(Request $request)
{
list($class, $method) = explode('@', $this->action['uses']);
return (new ControllerDispatcher($this->router, $this->container))
->dispatch($this, $request, $class, $method);
}
/**
* Determine if the route matches given request.
*
* @param \Illuminate\Http\Request $request
* @param bool $includingMethod
* @return bool
*/
public function matches(Request $request, $includingMethod = true)
{
$this->compileRoute();
foreach ($this->getValidators() as $validator) {
if (! $includingMethod && $validator instanceof MethodValidator) {
continue;
}
if (! $validator->matches($this, $request)) {
return false;
}
}
return true;
}
/**
* Compile the route into a Symfony CompiledRoute instance.
*
* @return void
*/
protected function compileRoute()
{
$optionals = $this->extractOptionalParameters();
$uri = preg_replace('/\{(\w+?)\?\}/', '{$1}', $this->uri);
$this->compiled = (
new SymfonyRoute($uri, $optionals, $this->wheres, [], $this->domain() ?: '')
)->compile();
}
/**
* Get the optional parameters for the route.
*
* @return array
*/
protected function extractOptionalParameters()
{
preg_match_all('/\{(\w+?)\?\}/', $this->uri, $matches);
return isset($matches[1]) ? array_fill_keys($matches[1], null) : [];
}
/**
* Get or set the middlewares attached to the route.
*
* @param array|string|null $middleware
* @return $this|array
*/
public function middleware($middleware = null)
{
if (is_null($middleware)) {
return (array) Arr::get($this->action, 'middleware', []);
}
if (is_string($middleware)) {
$middleware = [$middleware];
}
$this->action['middleware'] = array_merge(
(array) Arr::get($this->action, 'middleware', []), $middleware
);
return $this;
}
/**
* Get the controller middleware for the route.
*
* @return array
*/
protected function controllerMiddleware()
{
list($class, $method) = explode('@', $this->action['uses']);
$controller = $this->container->make($class);
return (new ControllerDispatcher($this->router, $this->container))
->getMiddleware($controller, $method);
}
/**
* Get the parameters that are listed in the route / controller signature.
*
* @param string|null $subClass
* @return array
*/
public function signatureParameters($subClass = null)
{
$action = $this->getAction();
if (is_string($action['uses'])) {
list($class, $method) = explode('@', $action['uses']);
$parameters = (new ReflectionMethod($class, $method))->getParameters();
} else {
$parameters = (new ReflectionFunction($action['uses']))->getParameters();
}
return is_null($subClass) ? $parameters : array_filter($parameters, function ($p) use ($subClass) {
return $p->getClass() && $p->getClass()->isSubclassOf($subClass);
});
}
/**
* Determine if the route has parameters.
*
* @return bool
*/
public function hasParameters()
{
return isset($this->parameters);
}
/**
* Determine a given parameter exists from the route.
*
* @param string $name
* @return bool
*/
public function hasParameter($name)
{
if (! $this->hasParameters()) {
return false;
}
return array_key_exists($name, $this->parameters());
}
/**
* Get a given parameter from the route.
*
* @param string $name
* @param mixed $default
* @return string|object
*/
public function getParameter($name, $default = null)
{
return $this->parameter($name, $default);
}
/**
* Get a given parameter from the route.
*
* @param string $name
* @param mixed $default
* @return string|object
*/
public function parameter($name, $default = null)
{
return Arr::get($this->parameters(), $name, $default);
}
/**
* Set a parameter to the given value.
*
* @param string $name
* @param mixed $value
* @return void
*/
public function setParameter($name, $value)
{
$this->parameters();
$this->parameters[$name] = $value;
}
/**
* Unset a parameter on the route if it is set.
*
* @param string $name
* @return void
*/
public function forgetParameter($name)
{
$this->parameters();
unset($this->parameters[$name]);
}
/**
* Get the key / value list of parameters for the route.
*
* @return array
*
* @throws \LogicException
*/
public function parameters()
{
if (isset($this->parameters)) {
return $this->parameters;
}
throw new LogicException('Route is not bound.');
}
/**
* Get the key / value list of parameters without null values.
*
* @return array
*/
public function parametersWithoutNulls()
{
return array_filter($this->parameters(), function ($p) {
return ! is_null($p);
});
}
/**
* Get all of the parameter names for the route.
*
* @return array
*/
public function parameterNames()
{
if (isset($this->parameterNames)) {
return $this->parameterNames;
}
return $this->parameterNames = $this->compileParameterNames();
}
/**
* Get the parameter names for the route.
*
* @return array
*/
protected function compileParameterNames()
{
preg_match_all('/\{(.*?)\}/', $this->domain().$this->uri, $matches);
return array_map(function ($m) {
return trim($m, '?');
}, $matches[1]);
}
/**
* Bind the route to a given request for execution.
*
* @param \Illuminate\Http\Request $request
* @return $this
*/
public function bind(Request $request)
{
$this->compileRoute();
$this->bindParameters($request);
return $this;
}
/**
* Extract the parameter list from the request.
*
* @param \Illuminate\Http\Request $request
* @return array
*/
public function bindParameters(Request $request)
{
// If the route has a regular expression for the host part of the URI, we will
// compile that and get the parameter matches for this domain. We will then
// merge them into this parameters array so that this array is completed.
$params = $this->matchToKeys(
array_slice($this->bindPathParameters($request), 1)
);
// If the route has a regular expression for the host part of the URI, we will
// compile that and get the parameter matches for this domain. We will then
// merge them into this parameters array so that this array is completed.
if (! is_null($this->compiled->getHostRegex())) {
$params = $this->bindHostParameters(
$request, $params
);
}
return $this->parameters = $this->replaceDefaults($params);
}
/**
* Get the parameter matches for the path portion of the URI.
*
* @param \Illuminate\Http\Request $request
* @return array
*/
protected function bindPathParameters(Request $request)
{
preg_match($this->compiled->getRegex(), '/'.$request->decodedPath(), $matches);
return $matches;
}
/**
* Extract the parameter list from the host part of the request.
*
* @param \Illuminate\Http\Request $request
* @param array $parameters
* @return array
*/
protected function bindHostParameters(Request $request, $parameters)
{
preg_match($this->compiled->getHostRegex(), $request->getHost(), $matches);
return array_merge($this->matchToKeys(array_slice($matches, 1)), $parameters);
}
/**
* Combine a set of parameter matches with the route's keys.
*
* @param array $matches
* @return array
*/
protected function matchToKeys(array $matches)
{
if (empty($parameterNames = $this->parameterNames())) {
return [];
}
$parameters = array_intersect_key($matches, array_flip($parameterNames));
return array_filter($parameters, function ($value) {
return is_string($value) && strlen($value) > 0;
});
}
/**
* Replace null parameters with their defaults.
*
* @param array $parameters
* @return array
*/
protected function replaceDefaults(array $parameters)
{
foreach ($parameters as $key => $value) {
$parameters[$key] = isset($value) ? $value : Arr::get($this->defaults, $key);
}
foreach ($this->defaults as $key => $value) {
if (! isset($parameters[$key])) {
$parameters[$key] = $value;
}
}
return $parameters;
}
/**
* Parse the route action into a standard array.
*
* @param callable|array|null $action
* @return array
*
* @throws \UnexpectedValueException
*/
protected function parseAction($action)
{
// If no action is passed in right away, we assume the user will make use of
// fluent routing. In that case, we set a default closure, to be executed
// if the user never explicitly sets an action to handle the given uri.
if (is_null($action)) {
return ['uses' => function () {
throw new LogicException("Route for [{$this->uri}] has no action.");
}];
}
// If the action is already a Closure instance, we will just set that instance
// as the "uses" property, because there is nothing else we need to do when
// it is available. Otherwise we will need to find it in the action list.
if (is_callable($action)) {
return ['uses' => $action];
}
// If no "uses" property has been set, we will dig through the array to find a
// Closure instance within this list. We will set the first Closure we come
// across into the "uses" property that will get fired off by this route.
elseif (! isset($action['uses'])) {
$action['uses'] = $this->findCallable($action);
}
if (is_string($action['uses']) && ! Str::contains($action['uses'], '@')) {
throw new UnexpectedValueException(sprintf(
'Invalid route action: [%s]', $action['uses']
));
}
return $action;
}
/**
* Find the callable in an action array.
*
* @param array $action
* @return callable
*/
protected function findCallable(array $action)
{
return Arr::first($action, function ($key, $value) {
return is_callable($value) && is_numeric($key);
});
}
/**
* Get the route validators for the instance.
*
* @return array
*/
public static function getValidators()
{
if (isset(static::$validators)) {
return static::$validators;
}
// To match the route, we will use a chain of responsibility pattern with the
// validator implementations. We will spin through each one making sure it
// passes and then we will know if the route as a whole matches request.
return static::$validators = [
new MethodValidator, new SchemeValidator,
new HostValidator, new UriValidator,
];
}
/**
* Set a default value for the route.
*
* @param string $key
* @param mixed $value
* @return $this
*/
public function defaults($key, $value)
{
$this->defaults[$key] = $value;
return $this;
}
/**
* Set a regular expression requirement on the route.
*
* @param array|string $name
* @param string $expression
* @return $this
*/
public function where($name, $expression = null)
{
foreach ($this->parseWhere($name, $expression) as $name => $expression) {
$this->wheres[$name] = $expression;
}
return $this;
}
/**
* Parse arguments to the where method into an array.
*
* @param array|string $name
* @param string $expression
* @return array
*/
protected function parseWhere($name, $expression)
{
return is_array($name) ? $name : [$name => $expression];
}
/**
* Set a list of regular expression requirements on the route.
*
* @param array $wheres
* @return $this
*/
protected function whereArray(array $wheres)
{
foreach ($wheres as $name => $expression) {
$this->where($name, $expression);
}
return $this;
}
/**
* Add a prefix to the route URI.
*
* @param string $prefix
* @return $this
*/
public function prefix($prefix)
{
$uri = rtrim($prefix, '/').'/'.ltrim($this->uri, '/');
$this->uri = trim($uri, '/');
return $this;
}
/**
* Get the URI associated with the route.
*
* @return string
*/
public function getPath()
{
return $this->uri();
}
/**
* Get the URI associated with the route.
*
* @return string
*/
public function uri()
{
return $this->uri;
}
/**
* Get the HTTP verbs the route responds to.
*
* @return array
*/
public function getMethods()
{
return $this->methods();
}
/**
* Get the HTTP verbs the route responds to.
*
* @return array
*/
public function methods()
{
return $this->methods;
}
/**
* Determine if the route only responds to HTTP requests.
*
* @return bool
*/
public function httpOnly()
{
return in_array('http', $this->action, true);
}
/**
* Determine if the route only responds to HTTPS requests.
*
* @return bool
*/
public function httpsOnly()
{
return $this->secure();
}
/**
* Determine if the route only responds to HTTPS requests.
*
* @return bool
*/
public function secure()
{
return in_array('https', $this->action, true);
}
/**
* Get the domain defined for the route.
*
* @return string|null
*/
public function domain()
{
return isset($this->action['domain']) ? $this->action['domain'] : null;
}
/**
* Get the URI that the route responds to.
*
* @return string
*/
public function getUri()
{
return $this->uri;
}
/**
* Set the URI that the route responds to.
*
* @param string $uri
* @return $this
*/
public function setUri($uri)
{
$this->uri = $uri;
return $this;
}
/**
* Get the prefix of the route instance.
*
* @return string
*/
public function getPrefix()
{
return isset($this->action['prefix']) ? $this->action['prefix'] : null;
}
/**
* Get the name of the route instance.
*
* @return string
*/
public function getName()
{
return isset($this->action['as']) ? $this->action['as'] : null;
}
/**
* Add or change the route name.
*
* @param string $name
* @return $this
*/
public function name($name)
{
$this->action['as'] = isset($this->action['as']) ? $this->action['as'].$name : $name;
return $this;
}
/**
* Set the handler for the route.
*
* @param \Closure|string $action
* @return $this
*/
public function uses($action)
{
$action = is_string($action) ? $this->addGroupNamespaceToStringUses($action) : $action;
return $this->setAction(array_merge($this->action, $this->parseAction([
'uses' => $action,
'controller' => $action,
])));
}
/**
* Parse a string based action for the "uses" fluent method.
*
* @param string $action
* @return string
*/
protected function addGroupNamespaceToStringUses($action)
{
$groupStack = last($this->router->getGroupStack());
if (isset($groupStack['namespace']) && strpos($action, '\\') !== 0) {
return $groupStack['namespace'].'\\'.$action;
}
return $action;
}
/**
* Get the action name for the route.
*
* @return string
*/
public function getActionName()
{
return isset($this->action['controller']) ? $this->action['controller'] : 'Closure';
}
/**
* Get the action array for the route.
*
* @return array
*/
public function getAction()
{
return $this->action;
}
/**
* Set the action array for the route.
*
* @param array $action
* @return $this
*/
public function setAction(array $action)
{
$this->action = $action;
return $this;
}
/**
* Get the compiled version of the route.
*
* @return \Symfony\Component\Routing\CompiledRoute
*/
public function getCompiled()
{
return $this->compiled;
}
/**
* Set the router instance on the route.
*
* @param \Illuminate\Routing\Router $router
* @return $this
*/
public function setRouter(Router $router)
{
$this->router = $router;
return $this;
}
/**
* Set the container instance on the route.
*
* @param \Illuminate\Container\Container $container
* @return $this
*/
public function setContainer(Container $container)
{
$this->container = $container;
return $this;
}
/**
* Prepare the route instance for serialization.
*
* @return void
*
* @throws \LogicException
*/
public function prepareForSerialization()
{
if ($this->action['uses'] instanceof Closure) {
throw new LogicException("Unable to prepare route [{$this->uri}] for serialization. Uses Closure.");
}
unset($this->router, $this->container, $this->compiled);
}
/**
* Dynamically access route parameters.
*
* @param string $key
* @return mixed
*/
public function __get($key)
{
return $this->parameter($key);
}
}