DmitryDulepov\Realurl\Encoder\UrlEncoder::createPathComponentUsingRootline PHP Method

    protected function createPathComponentUsingRootline()
    {
        $mountPointParameter = '';
        if (isset($this->urlParameters['MP'])) {
            $mountPointParameter = $this->urlParameters['MP'];
            unset($this->urlParameters['MP']);
        }
        $rootLineUtility = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Utility\\RootlineUtility', $this->urlParameters['id'], $mountPointParameter, $this->pageRepository);
        /** @var \TYPO3\CMS\Core\Utility\RootlineUtility $rootLineUtility */
        $rootLine = $rootLineUtility->get();
        // Skip from the root of the tree to the first level of pages
        while (count($rootLine) !== 0) {
            $page = array_pop($rootLine);
            if ($page['uid'] == $this->rootPageId) {
                break;
            }
        }
        $languageExceptionUids = (string) $this->configuration->get('pagePath/languageExceptionUids');
        $enableLanguageOverlay = (int) $this->originalUrlParameters['L'] > 0 && (empty($languageExceptionUids) || !GeneralUtility::inList($languageExceptionUids, $this->sysLanguageUid));
        $components = array();
        $reversedRootLine = array_reverse($rootLine);
        $rootLineMax = count($reversedRootLine) - 1;
        for ($current = 0; $current <= $rootLineMax; $current++) {
            $page = $reversedRootLine[$current];
            // Skip if this page is excluded
            if ($page['tx_realurl_exclude'] && $current !== $rootLineMax) {
                continue;
            }
            if ($enableLanguageOverlay) {
                $overlay = $this->pageRepository->getPageOverlay($page, (int) $this->originalUrlParameters['L']);
                if (is_array($overlay)) {
                    $page = $overlay;
                    unset($overlay);
                }
            }
            // if path override is set, use path segment also for all subpages to shorten the url and throw away all segments found so far
            if ($page['tx_realurl_pathoverride'] && $page['tx_realurl_pathsegment'] !== '') {
                $segment = trim($page['tx_realurl_pathsegment'], '/');
                $segments = explode('/', $segment);
                array_walk($segments, function (&$segments, $key) {
                    $segments[$key] = $this->utility->convertToSafeString($segments[$key], $this->separatorCharacter);
                });
                // Technically we could do with `$components = $segments` but it fills better to have overriden string here
                $segment = implode('/', $segments);
                $components = array($segment);
                continue;
            }
            foreach (self::$pageTitleFields as $field) {
                if (isset($page[$field]) && $page[$field] !== '') {
                    $segment = $this->utility->convertToSafeString($page[$field], $this->separatorCharacter);
                    if ($segment === '') {
                        $segment = $this->emptySegmentValue;
                    }
                    $components[] = $segment;
                    continue 2;
                }
            }
        }
        if (count($components) > 0) {
            foreach ($components as $segment) {
                $this->appendToEncodedUrl($segment);
            }
            if ($reversedRootLine[$rootLineMax]['doktype'] != PageRepository::DOKTYPE_SPACER && $reversedRootLine[$rootLineMax]['doktype'] != PageRepository::DOKTYPE_RECYCLER) {
                $this->addToPathCache(implode('/', $components));
            }
        }
    }