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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\Translation\Model\Js;
use Magento\Framework\App\AreaList;
use Magento\Framework\TranslateInterface;
use Magento\Framework\View\Asset\File\FallbackContext;
use Magento\Framework\View\Asset\PreProcessor\Chain;
use Magento\Framework\View\Asset\PreProcessorInterface;
/**
* PreProcessor responsible for replacing translation calls in js files to translated strings
*/
class PreProcessor implements PreProcessorInterface
{
/**
* Javascript translation configuration
*
* @var Config
*/
protected $config;
/**
* @var AreaList
*/
protected $areaList;
/**
* @var TranslateInterface
*/
protected $translate;
/**
* @param Config $config
* @param AreaList $areaList
* @param TranslateInterface $translate
*/
public function __construct(Config $config, AreaList $areaList, TranslateInterface $translate)
{
$this->config = $config;
$this->areaList = $areaList;
$this->translate = $translate;
}
/**
* Transform content and/or content type for the specified preprocessing chain object
*
* @param Chain $chain
* @return void
*/
public function process(Chain $chain)
{
if ($this->config->isEmbeddedStrategy()) {
$context = $chain->getAsset()->getContext();
$areaCode = \Magento\Backend\App\Area\FrontNameResolver::AREA_CODE;
if ($context instanceof FallbackContext) {
$areaCode = $context->getAreaCode();
$this->translate->setLocale($context->getLocale());
}
$area = $this->areaList->getArea($areaCode);
$area->load(\Magento\Framework\App\Area::PART_TRANSLATE);
$chain->setContent($this->translate($chain->getContent()));
}
}
/**
* Replace translation calls with translation result and return content
*
* @param string $content
* @return string
*/
public function translate($content)
{
foreach ($this->config->getPatterns() as $pattern) {
$content = preg_replace_callback($pattern, [$this, 'replaceCallback'], $content);
}
return $content;
}
/**
* Replace callback for preg_replace_callback function
*
* @param array $matches
* @return string
*/
protected function replaceCallback($matches)
{
return '\'' . __($matches['translate']) . '\'';
}
}