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Viewing: AssetExtension.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 Symfony\Bridge\Twig\Extension;

use Symfony\Component\Asset\Packages;
use Twig\Extension\AbstractExtension;
use Twig\TwigFunction;

/**
 * Twig extension for the Symfony Asset component.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class AssetExtension extends AbstractExtension
{
    private $packages;

    public function __construct(Packages $packages)
    {
        $this->packages = $packages;
    }

    /**
     * {@inheritdoc}
     */
    public function getFunctions()
    {
        return array(
            new TwigFunction('asset', array($this, 'getAssetUrl')),
            new TwigFunction('asset_version', array($this, 'getAssetVersion')),
        );
    }

    /**
     * Returns the public url/path of an asset.
     *
     * If the package used to generate the path is an instance of
     * UrlPackage, you will always get a URL and not a path.
     *
     * @param string $path        A public path
     * @param string $packageName The name of the asset package to use
     *
     * @return string The public path of the asset
     */
    public function getAssetUrl($path, $packageName = null)
    {
        return $this->packages->getUrl($path, $packageName);
    }

    /**
     * Returns the version of an asset.
     *
     * @param string $path        A public path
     * @param string $packageName The name of the asset package to use
     *
     * @return string The asset version
     */
    public function getAssetVersion($path, $packageName = null)
    {
        return $this->packages->getVersion($path, $packageName);
    }

    /**
     * Returns the name of the extension.
     *
     * @return string The extension name
     */
    public function getName()
    {
        return 'asset';
    }
}

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