NodeImg::execute

public function execute(array &$result)
{
	$lastId = Option::get('landing', 'update_block_nodeimg', 0);

	$toSave = array();
	$finished = true;

	// gets common quantity
	$res = BlockTable::getList(array(
		'select' => array(
			new BitrixMainEntityExpressionField(
				'CNT', 'COUNT(*)'
			)
		)
	));
	if ($row = $res->fetch())
	{
		$result['count'] = $row['CNT'];
	}

	// gets group for update
	$res = BlockTable::getList(array(
		'select' => array(
			'ID', 'CONTENT'
		),
		'filter' => array(
			'>ID' => $lastId
		),
		'order' => array(
			'ID' => 'ASC'
		),
		'limit' => 100
	));
	while ($row = $res->fetch())
	{
		$files = array();
		$fileExist = preg_match_all(
			'/data-([?fileid|filehash]+)="([^"]+)"[^>]+data-[?fileid|filehash]+="([^"]+)"/is',
			$row['CONTENT'],
			$matches
		);
		if ($fileExist)
		{
			foreach ($matches[1] as $i => $attr)
			{
				if ($attr == 'fileid')
				{
					$files[$matches[2][$i]] = $matches[3][$i];
				}
				else
				{
					$files[$matches[3][$i]] = $matches[2][$i];
				}
			}
			foreach ($files as $fileId => $fileHash)
			{
				if ($fileId > 0 && $this->getFileHash($fileId) == $fileHash)
				{
					if (!isset($toSave[$row['ID']]))
					{
						$toSave[$row['ID']] = array();
					}
					$toSave[$row['ID']][] = $fileId;
				}
			}
		}
		$lastId = $row['ID'];
		$result['steps']++;
		$finished = false;
	}

	// add files from blocks
	foreach ($toSave as $block => $files)
	{
		File::addToBlock($block, $files);
	}

	// clear handlers all continue work
	if (!$finished)
	{
		Option::set('landing', 'update_block_nodeimg', $lastId);
		return true;
	}
	else
	{
		Option::delete('landing', array('name' => 'update_block_nodeimg'));
		$eventManager = BitrixMainEventManager::getInstance();
		$eventManager->unregisterEventHandler(
			'landing',
			'BitrixLandingInternalsBlock::OnBeforeDelete',
			'landing',
			'BitrixLandingUpdateBlockNodeImg',
			'disableBlockDelete');
		$eventManager->unregisterEventHandler(
			'landing',
			'onLandingPublication',
			'landing',
			'BitrixLandingUpdateBlockNodeImg',
			'disablePublication'
		);
		return false;
	}
}