Файл: symfony-2.7/src/Symfony/Bundle/TwigBundle/Extension/AssetsExtension.php
Строк: 172
<?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 SymfonyBundleTwigBundleExtension;
use SymfonyComponentDependencyInjectionContainerInterface;
use SymfonyComponentRoutingRequestContext;
/**
* Twig extension for Symfony assets helper.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class AssetsExtension extends Twig_Extension
{
private $container;
private $context;
public function __construct(ContainerInterface $container, RequestContext $requestContext = null)
{
$this->container = $container;
$this->context = $requestContext;
}
/**
* Returns a list of functions to add to the existing list.
*
* @return array An array of functions
*/
public function getFunctions()
{
return array(
new Twig_SimpleFunction('asset', array($this, 'getAssetUrl')),
new Twig_SimpleFunction('assets_version', array($this, 'getAssetsVersion')),
);
}
/**
* Returns the public path of an asset.
*
* Absolute paths (i.e. http://...) are returned unmodified.
*
* @param string $path A public path
* @param string $packageName The name of the asset package to use
* @param bool $absolute Whether to return an absolute URL or a relative one
* @param string|bool|null $version A specific version
*
* @return string A public path which takes into account the base path and URL path
*/
public function getAssetUrl($path, $packageName = null, $absolute = false, $version = null)
{
$url = $this->container->get('templating.helper.assets')->getUrl($path, $packageName, $version);
if (!$absolute) {
return $url;
}
return $this->ensureUrlIsAbsolute($url);
}
/**
* Returns the version of the assets in a package.
*
* @param string $packageName
*
* @return int
*/
public function getAssetsVersion($packageName = null)
{
return $this->container->get('templating.helper.assets')->getVersion($packageName);
}
/**
* Returns the name of the extension.
*
* @return string The extension name
*/
public function getName()
{
return 'assets';
}
/**
* Ensures an URL is absolute, if possible.
*
* @param string $url The URL that has to be absolute
*
* @throws RuntimeException
*
* @return string The absolute URL
*/
private function ensureUrlIsAbsolute($url)
{
if (false !== strpos($url, '://') || 0 === strpos($url, '//')) {
return $url;
}
if (!$this->context) {
throw new RuntimeException('To generate an absolute URL for an asset, the Symfony Routing component is required.');
}
if ('' === $host = $this->context->getHost()) {
return $url;
}
$scheme = $this->context->getScheme();
$port = '';
if ('http' === $scheme && 80 != $this->context->getHttpPort()) {
$port = ':'.$this->context->getHttpPort();
} elseif ('https' === $scheme && 443 != $this->context->getHttpsPort()) {
$port = ':'.$this->context->getHttpsPort();
}
return $scheme.'://'.$host.$port.$url;
}
}