122 lines
3.4 KiB
PHP
122 lines
3.4 KiB
PHP
<?php
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/*
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* This file is part of the Symfony framework.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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namespace Symfony\Bundle\AsseticBundle\Controller;
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use Assetic\ValueSupplierInterface;
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use Assetic\Asset\AssetCache;
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use Assetic\Asset\AssetInterface;
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use Assetic\Factory\LazyAssetManager;
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use Assetic\Cache\CacheInterface;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpFoundation\Response;
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use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
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use Symfony\Component\HttpKernel\Profiler\Profiler;
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/**
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* Serves assets.
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*
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* @author Kris Wallsmith <kris@symfony.com>
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*/
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class AsseticController
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{
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protected $request;
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protected $am;
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protected $cache;
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protected $enableProfiler;
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protected $profiler;
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protected $valueSupplier;
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public function __construct(Request $request, LazyAssetManager $am, CacheInterface $cache, $enableProfiler = false, Profiler $profiler = null)
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{
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$this->request = $request;
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$this->am = $am;
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$this->cache = $cache;
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$this->enableProfiler = (boolean) $enableProfiler;
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$this->profiler = $profiler;
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}
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public function setValueSupplier(ValueSupplierInterface $supplier)
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{
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$this->valueSupplier = $supplier;
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}
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public function render($name, $pos = null)
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{
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if (!$this->enableProfiler && null !== $this->profiler) {
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$this->profiler->disable();
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}
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if (!$this->am->has($name)) {
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throw new NotFoundHttpException(sprintf('The "%s" asset could not be found.', $name));
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}
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$asset = $this->am->get($name);
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if (null !== $pos && !$asset = $this->findAssetLeaf($asset, $pos)) {
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throw new NotFoundHttpException(sprintf('The "%s" asset does not include a leaf at position %d.', $name, $pos));
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}
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$response = $this->createResponse();
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$response->setExpires(new \DateTime());
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// last-modified
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if (null !== $lastModified = $asset->getLastModified()) {
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$date = new \DateTime();
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$date->setTimestamp($lastModified);
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$response->setLastModified($date);
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}
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// etag
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if ($this->am->hasFormula($name)) {
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$formula = $this->am->getFormula($name);
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$formula['last_modified'] = $lastModified;
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$response->setETag(md5(serialize($formula)));
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}
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if ($response->isNotModified($this->request)) {
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return $response;
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}
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$response->setContent($this->cachifyAsset($asset)->dump());
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return $response;
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}
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protected function createResponse()
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{
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return new Response();
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}
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protected function cachifyAsset(AssetInterface $asset)
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{
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if ($vars = $asset->getVars()) {
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if (null === $this->valueSupplier) {
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throw new \RuntimeException(sprintf('You must configure a value supplier if you have assets with variables.'));
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}
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$asset->setValues(array_intersect_key($this->valueSupplier->getValues(), array_flip($vars)));
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}
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return new AssetCache($asset, $this->cache);
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}
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private function findAssetLeaf(\Traversable $asset, $pos)
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{
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$i = 0;
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foreach ($asset as $leaf) {
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if ($pos == $i++) {
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return $leaf;
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}
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}
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}
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}
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