69 lines
1.9 KiB
PHP
69 lines
1.9 KiB
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\Component\Asset\VersionStrategy;
|
|
|
|
/**
|
|
* Reads the versioned path of an asset from a JSON manifest file.
|
|
*
|
|
* For example, the manifest file might look like this:
|
|
* {
|
|
* "main.js": "main.abc123.js",
|
|
* "css/styles.css": "css/styles.555abc.css"
|
|
* }
|
|
*
|
|
* You could then ask for the version of "main.js" or "css/styles.css".
|
|
*/
|
|
class JsonManifestVersionStrategy implements VersionStrategyInterface
|
|
{
|
|
private $manifestPath;
|
|
private $manifestData;
|
|
|
|
/**
|
|
* @param string $manifestPath Absolute path to the manifest file
|
|
*/
|
|
public function __construct($manifestPath)
|
|
{
|
|
$this->manifestPath = $manifestPath;
|
|
}
|
|
|
|
/**
|
|
* With a manifest, we don't really know or care about what
|
|
* the version is. Instead, this returns the path to the
|
|
* versioned file.
|
|
*/
|
|
public function getVersion($path)
|
|
{
|
|
return $this->applyVersion($path);
|
|
}
|
|
|
|
public function applyVersion($path)
|
|
{
|
|
return $this->getManifestPath($path) ?: $path;
|
|
}
|
|
|
|
private function getManifestPath($path)
|
|
{
|
|
if (null === $this->manifestData) {
|
|
if (!file_exists($this->manifestPath)) {
|
|
throw new \RuntimeException(sprintf('Asset manifest file "%s" does not exist.', $this->manifestPath));
|
|
}
|
|
|
|
$this->manifestData = json_decode(file_get_contents($this->manifestPath), true);
|
|
if (0 < json_last_error()) {
|
|
throw new \RuntimeException(sprintf('Error parsing JSON from asset manifest file "%s": ', $this->manifestPath).json_last_error_msg());
|
|
}
|
|
}
|
|
|
|
return isset($this->manifestData[$path]) ? $this->manifestData[$path] : null;
|
|
}
|
|
}
|