Symfony Messages Extractor & Nette

NeonFileDumper.php

<?php
declare(strict_types=1);

namespace Symfony\Component\Translation\Dumper;

use Nette\Neon\Neon;
use Symfony\Component\Translation\Dumper\FileDumper;
use Symfony\Component\Translation\Exception\LogicException;
use Symfony\Component\Translation\MessageCatalogue;
use Symfony\Component\Translation\Util\ArrayConverter;

class NeonFileDumper extends FileDumper
{

	/** @var string */
	private $extension;


	public function __construct(string $extension = 'neon')
	{
	  $this->extension = $extension;
	}


	/**
	 * {@inheritdoc}
	 */
	public function formatCatalogue(MessageCatalogue $messages, $domain, array $options = [])
	{
		if (!class_exists('Nette\Neon\Neon')) {
			throw new LogicException('Dumping translations in the NEON format requires the Nette Neon package.');
		}

		$data = $messages->all($domain);

		if (isset($options['as_tree']) && $options['as_tree']) {
			$data = ArrayConverter::expandToTree($data);
		}

		return Neon::encode($data, 1);
	}


	/**
	 * {@inheritdoc}
	 */
	protected function getExtension()
	{
		return $this->extension;
	}
}

NetteTranslationExtractor.php

<?php
declare(strict_types=1);

// Removed dependency on Symfony Finder, now uses Nette Finder
// https://gist.github.com/jiripudil/57ad8ed153cc577f20b28e56a7614a1c#file-nettetranslatorextractor-php

namespace Symfony\Component\Translation\Extractor;

use Nette\Utils\Finder;
use Symfony\Component\Translation\Extractor\PhpExtractor;

final class NetteTranslatorExtractor extends PhpExtractor
{

	public function __construct()
	{
		$this->sequences[] = [
			'->',
			'translate',
			'(',
			PhpExtractor::MESSAGE_TOKEN,
		];
	}


	protected function extractFromDirectory($directory)
	{
	 	return Finder::findFiles('*.php')->from($directory);
	}
}

Usage.php

<?php
declare(strict_types=1);

use Symfony\Component\Translation\Extractor\LatteExtractor;
use Symfony\Component\Translation\ExtractorNetteTranslatorExtractor;
use Symfony\Component\Translation\Dumper\NeonFileDumper;
use Nette\Application\UI\ITemplateFactory;
use Symfony\Component\Translation\Catalogue\TargetOperation;
use Symfony\Component\Translation\Extractor\ChainExtractor;
use Symfony\Component\Translation\MessageCatalogue;
use Symfony\Component\Translation\Writer\TranslationWriter;

$extractor = new ChainExtractor();
$extractor->addExtractor('latte', new LatteExtractor($this->templateFactory)); // ITemplateFactory from DI
$extractor->addExtractor('php', new NetteTranslatorExtractor());

$extractedCatalogue = new MessageCatalogue('new'); // locale
$extractor->extract($sourceDir, $extractedCatalogue);

$currentCatalogue = new MessageCatalogue('new');
$operation = new TargetOperation($currentCatalogue, $extractedCatalogue);

$writer = new TranslationWriter;
$writer->addDumper('neon', new NeonFileDumper());
$writer->write($operation->getResult(), 'neon', [
	'path' => $this->tempDir,
	// 'as_tree' => true, // Otherwise the structure is flat and repeated on each line
]);