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<?php |
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/** |
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* WebHemi. |
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* |
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* PHP version 5.6 |
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* |
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* @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com) |
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* @license https://opensource.org/licenses/MIT The MIT License (MIT) |
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* |
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* @link http://www.gixx-web.com |
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*/ |
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namespace WebHemi\Middleware; |
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use RuntimeException; |
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use WebHemi\Adapter\Http\ResponseInterface; |
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use WebHemi\Adapter\Http\ServerRequestInterface; |
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use WebHemi\Adapter\Renderer\RendererAdapterInterface; |
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/** |
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* Class FinalMiddleware. |
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*/ |
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class FinalMiddleware implements MiddlewareInterface |
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{ |
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/** @var RendererAdapterInterface */ |
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private $templateRenderer; |
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/** |
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* FinalMiddleware constructor. |
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* |
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* @param RendererAdapterInterface $templateRenderer |
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*/ |
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public function __construct(RendererAdapterInterface $templateRenderer) |
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{ |
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$this->templateRenderer = $templateRenderer; |
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} |
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/** |
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* Sends out the headers and prints the response body to the output. |
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* |
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* @param ServerRequestInterface $request |
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* @param ResponseInterface $response |
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* |
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* @return ResponseInterface |
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*/ |
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public function __invoke(ServerRequestInterface &$request, ResponseInterface $response) |
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{ |
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// @codeCoverageIgnoreStart |
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if (!defined('PHPUNIT_WEBHEMI_TESTSUITE') && headers_sent()) { |
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throw new RuntimeException('Unable to emit response; headers already sent'); |
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} |
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// @codeCoverageIgnoreEnd |
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$content = $response->getBody(); |
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// Handle errors here. |
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if ($response->getStatusCode() !== ResponseInterface::STATUS_OK) { |
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$errorTemplate = 'error-'.$response->getStatusCode(); |
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$exception = $request->getAttribute(ServerRequestInterface::REQUEST_ATTR_MIDDLEWARE_EXCEPTION); |
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$content = $this->templateRenderer->render($errorTemplate, ['exception' => $exception]); |
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} |
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$response = $this->injectContentLength($response); |
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// Skip sending output when PHP Unit is running. |
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// @codeCoverageIgnoreStart |
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if (!defined('PHPUNIT_WEBHEMI_TESTSUITE')) { |
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$this->sendHttpHeader($response); |
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$this->sendOutputHeaders($response->getHeaders()); |
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echo $content; |
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} |
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// @codeCoverageIgnoreEnd |
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return $response; |
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} |
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/** |
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* Inject the Content-Length header if is not already present. |
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* |
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* @param ResponseInterface $response |
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* |
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* @return ResponseInterface |
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*/ |
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private function injectContentLength(ResponseInterface $response) |
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{ |
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if (!$response->hasHeader('Content-Length')&& !is_null($response->getBody()->getSize())) { |
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$response = $response->withHeader('Content-Length', (string) $response->getBody()->getSize()); |
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} |
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return $response; |
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} |
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/** |
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* Filter a header name to word case. |
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* |
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* @param string $headerName |
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* |
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* @return string |
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*/ |
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private function filterHeaderName($headerName) |
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{ |
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$filtered = str_replace('-', ' ', $headerName); |
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$filtered = ucwords($filtered); |
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return str_replace(' ', '-', $filtered); |
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} |
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/** |
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* Sends the HTTP header. |
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* |
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* @param ResponseInterface $response |
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* |
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* @codeCoverageIgnore - vendor and core function calls |
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*/ |
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private function sendHttpHeader(ResponseInterface $response) |
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{ |
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$reasonPhrase = $response->getReasonPhrase(); |
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header(sprintf( |
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'HTTP/%s %d%s', |
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$response->getProtocolVersion(), |
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$response->getStatusCode(), |
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($reasonPhrase ? ' '.$reasonPhrase : '') |
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)); |
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} |
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/** |
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* Sends out output headers. |
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* |
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* @param array $headers |
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* |
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* @codeCoverageIgnore - vendor and core function calls in loop |
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*/ |
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private function sendOutputHeaders(array $headers) |
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{ |
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foreach ($headers as $headerName => $values) { |
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$name = $this->filterHeaderName($headerName); |
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$first = true; |
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foreach ($values as $value) { |
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header(sprintf('%s: %s', $name, $value), $first); |
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$first = false; |
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} |
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} |
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} |
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} |
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Gixx /
WebHemi
