vendor/sensio/generator-bundle/Manipulator/RoutingManipulator.php

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<?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\GeneratorBundle\Manipulator;

use Symfony\Component\DependencyInjection\Container;
use Sensio\Bundle\GeneratorBundle\Generator\DoctrineCrudGenerator;
use Symfony\Component\Yaml\Yaml;

/**
 * Changes the PHP code of a YAML routing file.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class RoutingManipulator extends Manipulator
{
    private $file;

    /**
     * @param string $file The YAML routing file path
     */
    public function __construct($file)
    {
        $this->file = $file;
    }

    /**
     * Adds a routing resource at the top of the existing ones.
     *
     * @param string $bundle
     * @param string $format
     * @param string $prefix
     * @param string $path
     *
     * @return bool Whether the operation succeeded
     *
     * @throws \RuntimeException If bundle is already imported
     */
    public function addResource($bundle, $format, $prefix = '/', $path = 'routing')
    {
        $current = '';
        $code = sprintf("%s:\n", $this->getImportedResourceYamlKey($bundle, $prefix));

        if (file_exists($this->file)) {
            $current = file_get_contents($this->file);

            // Don't add same bundle twice
            if (false !== strpos($current, '@'.$bundle)) {
                throw new \RuntimeException(sprintf('Bundle "%s" is already imported.', $bundle));
            }
        } elseif (!is_dir($dir = dirname($this->file))) {
            mkdir($dir, 0777, true);