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<?php |
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/* |
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* This file is part of ocubom/twig-extra-bundle |
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* |
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* © Oscar Cubo Medina <https://ocubom.github.io> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Ocubom\TwigExtraBundle\Listener; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpFoundation\ResponseHeaderBag; |
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use Symfony\Component\HttpKernel\Event\ResponseEvent; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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class AddHttpHeadersListener implements EventSubscriberInterface |
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{ |
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protected array $rules = []; |
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public function __construct(array ...$rules) |
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{ |
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$this->rules = \func_get_args() ?: []; |
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} |
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public function onKernelResponse(ResponseEvent $event): void |
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{ |
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if (empty($this->rules) || !$event->isMainRequest()) { |
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return; |
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} |
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$response = $event->getResponse(); |
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$content = $response->getContent(); |
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if (!is_string($content)) { |
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return; // Ignore special (binary or streamed) responses |
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} |
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$headers = $response->headers; |
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$format = $headers->get('content-type') ?: ($event->getRequest()->getRequestFormat() ?? 'text/html'); |
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$format = explode(';', $format)[0]; |
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// Add custom headers and filter content |
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foreach ($this->rules as $rule) { |
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$content = $this->applyRule($rule, $content, $headers, $format); |
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} |
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try { |
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$response->setContent($content); |
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} catch (\LogicException $err) { // @codeCoverageIgnore |
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// Just ignore exception |
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} |
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} |
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/** @codeCoverageIgnore */ |
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public static function getSubscribedEvents(): array |
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{ |
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return [ |
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KernelEvents::RESPONSE => 'onKernelResponse', |
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]; |
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} |
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public function applyRule(array $rule, string $content, ResponseHeaderBag $headers, string $format): string |
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{ |
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if (!$rule['enabled'] || (isset($rule['formats']) && !\in_array($format, $rule['formats'], true))) { |
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return $content; // Ignore disabled or unsupported rules |
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} |
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if (isset($rule['pattern'])) { |
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$content = preg_replace_callback( |
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$rule['pattern'], |
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function (array $match) use ($headers, $rule): string { |
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// Set header value |
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$value = vsprintf(isset($rule['value']) ? $rule['value'] : '%s', $match); |
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$headers->set($rule['name'], $value); |
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// Replace matched text |
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return vsprintf(isset($rule['replace']) ? $rule['replace'] : '%s', $match); |
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}, |
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$content |
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); |
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} else { |
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// Add value |
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$headers->set($rule['name'], isset($rule['value']) ? $rule['value'] : ''); |
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} |
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return $content; |
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} |
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} |
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ocubom /
twig-extra-bundle
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