Neos Backend xliff provider with configurable override

gistfile1.txt

<?php
namespace TYPO3\Neos\Controller\Backend;

/*                                                                        *
 * This script belongs to the TYPO3 Flow package "TYPO3.Neos".            *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU General Public License, either version 3 of the   *
 * License, or (at your option) any later version.                        *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */

use TYPO3\Flow\Annotations as Flow;
use TYPO3\Flow\I18n\Locale;
use TYPO3\Flow\Utility\Arrays;

/**
 * The TYPO3 Backend controller
 *
 * @Flow\Scope("singleton")
 */
class BackendController extends \TYPO3\Flow\Mvc\Controller\ActionController {

	/**
	 * @Flow\Inject
	 * @var \TYPO3\Neos\Service\BackendRedirectionService
	 */
	protected $backendRedirectionService;

	/**
	 * @Flow\Inject
	 * @var \TYPO3\Neos\Service\XliffService
	 */
	protected $xliffService;

	/**
	 * @Flow\Inject
	 * @var \TYPO3\Neos\Service\UserService
	 */
	protected $userService;

	/**
	 * @Flow\Inject(setting="ui.translation.autoInclude", package="TYPO3.Neos")
	 * @var array
	 */
	protected $packagesRegisteredForAutoInclusion = [];


	/**
	 * Default action of the backend controller.
	 *
	 * @return void
	 */
	public function indexAction() {
		$redirectionUri = $this->backendRedirectionService->getAfterLoginRedirectionUri($this->request);
		if ($redirectionUri === NULL) {
			$redirectionUri = $this->uriBuilder->uriFor('index', array(), 'Login', 'TYPO3.Neos');
		}
		$this->redirectToUri($redirectionUri);
	}


	/**
	 * Returns the cached json array with the xliff labels
	 *
	 * @return string
	 */
	public function getXliffAsJsonAction() {
		$this->response->setHeader('Content-Type', 'application/json');
		$locale = new Locale($this->userService->getInterfaceLanguage());

		$labels = json_decode($this->xliffService->getCachedJson($locale), TRUE);
		foreach ($this->packagesRegisteredForAutoInclusion as $packageKey => $isToBeIncluded) {
			if ($isToBeIncluded === TRUE) {
				$overrideLabels = json_decode($this->xliffService->getCachedJson($locale, 'Main', $packageKey), TRUE);
				$overrideLabels = Arrays::getValueByPath($overrideLabels, $packageKey);
				if (isset($overrideLabels['Main'])) {
					$labels['TYPO3']['Neos']['Main'] = Arrays::arrayMergeRecursiveOverrule($labels['TYPO3']['Neos']['Main'], $overrideLabels['Main']);
				}
			}
		}

		return json_encode($labels);
	}
}