Initial import

php/vendor/slim/twig-view/src/TwigMiddleware.php

@@ -0,0 +1,127 @@
+<?php
+/**
+ * Slim Framework (http://slimframework.com)
+ *
+ * @license   https://github.com/slimphp/Twig-View/blob/master/LICENSE.md (MIT License)
+ */
+
+declare(strict_types=1);
+
+namespace Slim\Views;
+
+use Psr\Container\ContainerInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use RuntimeException;
+use Slim\App;
+use Slim\Interfaces\RouteParserInterface;
+
+class TwigMiddleware implements MiddlewareInterface
+{
+    /**
+     * @var Twig
+     */
+    protected $twig;
+
+    /**
+     * @var RouteParserInterface
+     */
+    protected $routeParser;
+
+    /**
+     * @var string
+     */
+    protected $basePath;
+
+    /**
+     * @var string|null
+     */
+    protected $attributeName;
+
+    /**
+     * @param App    $app
+     * @param string $containerKey
+     *
+     * @return TwigMiddleware
+     */
+    public static function createFromContainer(App $app, string $containerKey = 'view'): self
+    {
+        $container = $app->getContainer();
+        if ($container === null) {
+            throw new RuntimeException('The app does not have a container.');
+        }
+        if (!$container->has($containerKey)) {
+            throw new RuntimeException(
+                "The specified container key does not exist: $containerKey"
+            );
+        }
+
+        $twig = $container->get($containerKey);
+        if (!($twig instanceof Twig)) {
+            throw new RuntimeException(
+                "Twig instance could not be resolved via container key: $containerKey"
+            );
+        }
+
+        return new self(
+            $twig,
+            $app->getRouteCollector()->getRouteParser(),
+            $app->getBasePath()
+        );
+    }
+
+    /**
+     * @param App    $app
+     * @param Twig   $twig
+     * @param string $attributeName
+     *
+     * @return TwigMiddleware
+     */
+    public static function create(App $app, Twig $twig, string $attributeName = 'view'): self
+    {
+        return new self(
+            $twig,
+            $app->getRouteCollector()->getRouteParser(),
+            $app->getBasePath(),
+            $attributeName
+        );
+    }
+
+    /**
+     * @param Twig                 $twig
+     * @param RouteParserInterface $routeParser
+     * @param string               $basePath
+     * @param string|null          $attributeName
+     */
+    public function __construct(
+        Twig $twig,
+        RouteParserInterface $routeParser,
+        string $basePath = '',
+        ?string $attributeName = null
+    ) {
+        $this->twig = $twig;
+        $this->routeParser = $routeParser;
+        $this->basePath = $basePath;
+        $this->attributeName = $attributeName;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        $runtimeLoader = new TwigRuntimeLoader($this->routeParser, $request->getUri(), $this->basePath);
+        $this->twig->addRuntimeLoader($runtimeLoader);
+
+        $extension = new TwigExtension();
+        $this->twig->addExtension($extension);
+
+        if ($this->attributeName !== null) {
+            $request = $request->withAttribute($this->attributeName, $this->twig);
+        }
+
+        return $handler->handle($request);
+    }
+}