88 lines
3.1 KiB
PHP
88 lines
3.1 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Asset\VersionStrategy;
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use Symfony\Contracts\HttpClient\Exception\DecodingExceptionInterface;
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use Symfony\Contracts\HttpClient\HttpClientInterface;
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/**
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* Reads the versioned path of an asset from a JSON manifest file.
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*
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* For example, the manifest file might look like this:
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* {
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* "main.js": "main.abc123.js",
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* "css/styles.css": "css/styles.555abc.css"
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* }
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*
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* You could then ask for the version of "main.js" or "css/styles.css".
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*/
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class JsonManifestVersionStrategy implements VersionStrategyInterface
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{
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private $manifestPath;
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private $manifestData;
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private $httpClient;
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/**
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* @param string $manifestPath Absolute path to the manifest file
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*/
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public function __construct(string $manifestPath, HttpClientInterface $httpClient = null)
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{
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$this->manifestPath = $manifestPath;
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$this->httpClient = $httpClient;
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if (null === $this->httpClient && 0 === strpos(parse_url($this->manifestPath, \PHP_URL_SCHEME), 'http')) {
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throw new \LogicException(sprintf('The "%s" class needs an HTTP client to use a remote manifest. Try running "composer require symfony/http-client".', self::class));
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}
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}
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/**
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* With a manifest, we don't really know or care about what
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* the version is. Instead, this returns the path to the
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* versioned file.
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*/
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public function getVersion(string $path)
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{
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return $this->applyVersion($path);
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}
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public function applyVersion(string $path)
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{
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return $this->getManifestPath($path) ?: $path;
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}
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private function getManifestPath(string $path): ?string
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{
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if (null === $this->manifestData) {
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if (null !== $this->httpClient && 0 === strpos(parse_url($this->manifestPath, \PHP_URL_SCHEME), 'http')) {
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try {
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$this->manifestData = $this->httpClient->request('GET', $this->manifestPath, [
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'headers' => ['accept' => 'application/json'],
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])->toArray();
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} catch (DecodingExceptionInterface $e) {
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throw new \RuntimeException(sprintf('Error parsing JSON from asset manifest URL "%s".', $this->manifestPath), 0, $e);
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}
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} else {
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if (!is_file($this->manifestPath)) {
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throw new \RuntimeException(sprintf('Asset manifest file "%s" does not exist.', $this->manifestPath));
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}
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$this->manifestData = json_decode(file_get_contents($this->manifestPath), true);
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if (0 < json_last_error()) {
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throw new \RuntimeException(sprintf('Error parsing JSON from asset manifest file "%s": ', $this->manifestPath).json_last_error_msg());
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}
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}
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}
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return $this->manifestData[$path] ?? null;
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}
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}
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