CollectLangPath::runIndexing

private function runIndexing(): array
{
	$indexer = new IndexPathLangCollection();

	$processedItemCount = 0;

	for ($pos = ((int)$this->seekOffset > 0 ? (int)$this->seekOffset : 0), $total = count($this->pathList); $pos < $total; $pos ++)
	{
		$filter = new TranslateFilter();

		if (!empty($this->languages))
		{
			$filter->langId = $this->languages;
		}

		$testPath = $this->pathList[$pos];
		if (preg_match("#(.+/lang)(/?w*)#", $testPath, $matches))
		{
			$filter->path = $matches[1];
			$indexer->purge($filter);

			$processedItemCount += $indexer->collect($filter);//++1
		}
		else
		{
			$filter->path = $testPath;

			$seek = new TranslateFilter();
			$seek->lookForSeek = false;

			if (!empty($this->seekPath))
			{
				$seek->path = $this->seekPath;
				$seek->lookForSeek = true;
			}
			else
			{
				$indexer->purge($filter);
			}

			$processedItemCount += $indexer->collect($filter, $this->instanceTimer(), $seek);

			if ($this->instanceTimer()->hasTimeLimitReached())
			{
				if (isset($seek->nextPath))
				{
					$this->seekPath = $seek->nextPath;
				}
				break;
			}

			$this->seekPath = null;
		}

		// check user abortion
		if (connection_status() !== CONNECTION_NORMAL)
		{
			throw new MainSystemException('Process has been broken course user aborted connection.');
		}

		if (isset($this->pathList[$pos + 1]))
		{
			$this->seekOffset = $pos + 1;//next
		}
		else
		{
			$this->seekOffset = null;
			$this->declareAccomplishment();
			$this->clearProgressParameters();
		}

		if ($this->instanceTimer()->hasTimeLimitReached())
		{
			break;
		}
	}

	$this->processedItems += $processedItemCount;
	$this->totalItems += $processedItemCount;

	if ($this->instanceTimer()->hasTimeLimitReached() !== true)
	{
		$this->processedItems = $this->totalItems = (new IndexPathIndexCollection())->countItemsToProcess($filter);

		$this->declareAccomplishment();
		$this->clearProgressParameters();
	}

	return [
		'PROCESSED_ITEMS' => $this->processedItems,
		'TOTAL_ITEMS' => $this->totalItems,
	];
}