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?? Editing: TemplateGuesser.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Sensio\Bundle\FrameworkExtraBundle\Templating;

use Doctrine\Persistence\Proxy;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\KernelInterface;

/**
 * The TemplateGuesser class handles the guessing of template name based on controller.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class TemplateGuesser
{
    /**
     * @var KernelInterface
     */
    private $kernel;

/**
     * @var string[]
     */
    private $controllerPatterns;

/**
     * @param string[] $controllerPatterns Regexps extracting the controller name from its FQN
     */
    public function __construct(KernelInterface $kernel, array $controllerPatterns = [])
    {
        $controllerPatterns[] = '/Controller\\\(.+)Controller$/';

$this->kernel = $kernel;
        $this->controllerPatterns = $controllerPatterns;
    }

/**
     * Guesses and returns the template name to render based on the controller
     * and action names.
     *
     * @param callable $controller An array storing the controller object and action method
     *
     * @return string The template name
     *
     * @throws \InvalidArgumentException
     */
    public function guessTemplateName($controller, Request $request)
    {
        if (\is_object($controller) && method_exists($controller, '__invoke')) {
            $controller = [$controller, '__invoke'];
        } elseif (!\is_array($controller)) {
            throw new \InvalidArgumentException(sprintf('First argument of "%s" must be an array callable or an object defining the magic method __invoke. "%s" given.', __METHOD__, \gettype($controller)));
        }

$className = $this->getRealClass(\get_class($controller[0]));

$matchController = null;
        foreach ($this->controllerPatterns as $pattern) {
            if (preg_match($pattern, $className, $tempMatch)) {
                $matchController = str_replace('\\', '/', strtolower(preg_replace('/([a-z\d])([A-Z])/', '\\1_\\2', $tempMatch[1])));
                break;
            }
        }
        if (null === $matchController) {
            throw new \InvalidArgumentException(sprintf('The "%s" class does not look like a controller class (its FQN must match one of the following regexps: "%s").', \get_class($controller[0]), implode('", "', $this->controllerPatterns)));
        }

if ('__invoke' === $controller[1]) {
            $matchAction = $matchController;
            $matchController = null;
        } else {
            $matchAction = preg_replace('/Action$/', '', $controller[1]);
        }

$matchAction = strtolower(preg_replace('/([a-z\d])([A-Z])/', '\\1_\\2', $matchAction));
        $bundleName = $this->getBundleForClass($className);

return sprintf(($bundleName ? '@'.$bundleName.'/' : '').$matchController.($matchController ? '/' : '').$matchAction.'.'.$request->getRequestFormat().'.twig');
    }

/**
     * Returns the bundle name in which the given class name is located.
     *
     * @param string $class A fully qualified controller class name
     *
     * @return string|null $bundle A bundle name
     */
    private function getBundleForClass($class)
    {
        $reflectionClass = new \ReflectionClass($class);
        $bundles = $this->kernel->getBundles();

do {
            $namespace = $reflectionClass->getNamespaceName();
            foreach ($bundles as $bundle) {
                if ('Symfony\Bundle\FrameworkBundle' === $bundle->getNamespace()) {
                    continue;
                }
                if (0 === strpos($namespace, $bundle->getNamespace())) {
                    return preg_replace('/Bundle$/', '', $bundle->getName());
                }
            }
            $reflectionClass = $reflectionClass->getParentClass();
        } while ($reflectionClass);
    }

private static function getRealClass(string $class): string
    {
        if (!class_exists(Proxy::class)) {
            return $class;
        }
        if (false === $pos = strrpos($class, '\\'.Proxy::MARKER.'\\')) {
            return $class;
        }

return substr($class, $pos + Proxy::MARKER_LENGTH + 2);
    }
}

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