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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View\Asset\PreProcessor;
use Magento\Framework\ObjectManagerInterface;
use Magento\Framework\View\Asset\ContentProcessorInterface;
use Magento\Framework\View\Asset\File\FallbackContext;
use Magento\Framework\View\Asset\LockerProcessInterface;
use Magento\Framework\View\Asset\PreProcessor\AlternativeSource\AssetBuilder;
/**
* @SuppressWarnings(PHPMD.CouplingBetweenObjects)
*/
class AlternativeSource implements AlternativeSourceInterface
{
/**
* The key name of the processor class
*/
public const PROCESSOR_CLASS = 'class';
/**
* @var Helper\SortInterface
*/
private $sorter;
/**
* @var array
*/
private $alternatives;
/**
* @var ObjectManagerInterface
*/
private $objectManager;
/**
* @var array
*/
private $alternativesSorted;
/**
* @var LockerProcessInterface
*/
private $lockerProcess;
/**
* @var string
*/
private $lockName;
/**
* @var AssetBuilder
*/
private $assetBuilder;
/**
* @var FilenameResolverInterface
*/
private $filenameResolver;
/**
* Constructor
*
* @param FilenameResolverInterface $filenameResolver
* @param ObjectManagerInterface $objectManager
* @param LockerProcessInterface $lockerProcess
* @param Helper\SortInterface $sorter
* @param AssetBuilder $assetBuilder
* @param string $lockName
* @param array $alternatives
*/
public function __construct(
FilenameResolverInterface $filenameResolver,
ObjectManagerInterface $objectManager,
LockerProcessInterface $lockerProcess,
Helper\SortInterface $sorter,
AssetBuilder $assetBuilder,
$lockName,
array $alternatives = []
) {
$this->objectManager = $objectManager;
$this->lockerProcess = $lockerProcess;
$this->sorter = $sorter;
$this->alternatives = $alternatives;
$this->lockName = $lockName;
$this->assetBuilder = $assetBuilder;
$this->filenameResolver = $filenameResolver;
}
/**
* @inheritdoc
* @throws \UnexpectedValueException
*/
public function process(Chain $chain)
{
$path = $chain->getAsset()->getFilePath();
$content = $chain->getContent();
if ($content && trim($content) !== '') {
return;
}
try {
$this->lockerProcess->lockProcess($this->lockName);
$module = $chain->getAsset()->getModule();
/** @var FallbackContext $context */
$context = $chain->getAsset()->getContext();
$chain->setContent($this->processContent($path, $content, $module, $context));
} finally {
$this->lockerProcess->unlockProcess();
}
}
/**
* Preparation of content for the destination file
*
* @param string $path
* @param string $content
* @param string $module
* @param FallbackContext $context
* @return string
* @throws \UnexpectedValueException
*/
private function processContent($path, $content, $module, FallbackContext $context)
{
if ($this->alternativesSorted === null) {
$this->alternativesSorted = $this->sorter->sort($this->alternatives);
}
$path = $this->filenameResolver->resolve($path);
foreach ($this->alternativesSorted as $name => $alternative) {
$asset = $this->assetBuilder->setArea($context->getAreaCode())
->setTheme($context->getThemePath())
->setLocale($context->getLocale())
->setModule($module)
->setPath(
preg_replace(
'#\.' . preg_quote(pathinfo($path, PATHINFO_EXTENSION)) . '$#',
'.' . $name,
$path
)
)->build();
$processor = $this->objectManager->get($alternative[self::PROCESSOR_CLASS]);
if (!$processor instanceof ContentProcessorInterface) {
throw new \UnexpectedValueException(
'"' . $alternative[self::PROCESSOR_CLASS] . '" has to implement the ContentProcessorInterface.'
);
}
$content = $processor->processContent($asset);
if ($content && trim($content) !== '') {
return $content;
}
}
return $content;
}
/**
* @inheritdoc
*/
public function getAlternativesExtensionsNames()
{
return array_keys($this->alternatives);
}
/**
* Check if file extension supported
*
* @param string $ext
* @return bool
*/
public function isExtensionSupported($ext)
{
return isset($this->alternatives[$ext]);
}
}