UpgradeAnalysis.php

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<?php
namespace TYPO3\CMS\Install\Controller\Action\Tool;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use TYPO3\CMS\Core\Database\ConnectionPool;
use TYPO3\CMS\Core\FormProtection\FormProtectionFactory;
use TYPO3\CMS\Core\FormProtection\InstallToolFormProtection;
use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Install\Controller\Action\AbstractAction;
use TYPO3\CMS\Install\UpgradeAnalysis\DocumentationFile;

class UpgradeAnalysis extends AbstractAction
{

    protected function executeAction()
    {
        $documentationFileService = new DocumentationFile();
        $documentationFiles = $documentationFileService->findDocumentationFiles(
            strtr(realpath(PATH_site . ExtensionManagementUtility::siteRelPath('core') . 'Documentation/Changelog'), '\\', '/')
        );

        $formProtection = FormProtectionFactory::get(InstallToolFormProtection::class);
        $saveIgnoredItemsToken = $formProtection->generateToken('installTool', 'saveIgnoredItems');
        $removeIgnoredItemsToken = $formProtection->generateToken('installTool', 'removeIgnoredItems');
        $this->view->assignMultiple([
            'saveIgnoredItemsToken' => $saveIgnoredItemsToken,
            'removeIgnoredItemsToken' => $removeIgnoredItemsToken,
        ]);
        $documentationFiles = array_reverse($documentationFiles);

        $filesMarkedAsShown = GeneralUtility::makeInstance(ConnectionPool::class)
            ->getConnectionForTable('sys_registry')
            ->select(['*'], 'sys_registry', [
                'entry_namespace' => 'upgradeAnalysisIgnoredFiles'
            ])->fetchAll();

        $hashes = [];
        foreach ($filesMarkedAsShown as $file) {
            $hashes[] = $file['entry_key'];
        }

        $readFiles = [];
        foreach ($documentationFiles as $section => &$files) {
            foreach ($files as $fileId => $fileData) {
                if (in_array($fileData['file_hash'], $hashes, true)) {
                    $fileData['section'] = $section;
                    $readFiles[$fileId] = $fileData;
                    unset($files[$fileId]);
                }
            }
        }

        $this->view->assign('files', $documentationFiles);
        $this->view->assign('shownFiles', $readFiles);
        return $this->view->render();
    }
}