GoogleHandler::repackDocument

public function repackDocument(FileData $fileData)
{
	if(!extension_loaded('zip'))
	{
		return null;
	}
	if(!TypeFile::isDocument($fileData->getName()))
	{
		return null;
	}
	$file = new IOFile($fileData->getSrc());
	if(!$file->isExists() || $file->getSize() > 15*1024*1024)
	{
		return null;
	}
	unset($file);

	$ds = DIRECTORY_SEPARATOR;
	$targetDir = CTempFile::getDirectoryName(2, 'disk_repack' . $ds . md5(uniqid('di', true)));
	checkDirPath($targetDir);
	$targetDir = IOPath::normalize($targetDir) . $ds;

	$zipOrigin = new ZipArchive();
	if($zipOrigin->open($fileData->getSrc()) !== true)
	{
		return null;
	}
	if($zipOrigin->getNameIndex(0) === '[Content_Types].xml')
	{
		$zipOrigin->close();
		return null;
	}
	if(!$zipOrigin->extractTo($targetDir))
	{
		$zipOrigin->close();
		return null;
	}
	$zipOrigin->close();
	unset($zipOrigin);

	if(is_dir($targetDir) !== true)
	{
		return null;
	}

	$newName = md5(uniqid('di', true));
	$newFilepath = $targetDir . '..' . $ds . $newName;
	$repackedZip = new ZipArchive;
	if(!$repackedZip->open($newFilepath, ZipArchive::CREATE))
	{
		return null;
	}
	$source = realpath($targetDir);
	$repackedZip->addFile($source . $ds . '[Content_Types].xml', '[Content_Types].xml');
	$files = new RecursiveIteratorIterator(
		new RecursiveDirectoryIterator($source, FilesystemIterator::SKIP_DOTS),
		RecursiveIteratorIterator::SELF_FIRST
	);
	foreach($files as $file)
	{
		if($file->getBasename() === '[Content_Types].xml')
		{
			continue;
		}
		$file = str_replace('\', '/', $file);
		$file = realpath($file);

		if(is_dir($file) === true)
		{
			$repackedZip->addEmptyDir(str_replace('\', '/', str_replace($source . $ds, '', $file . $ds)));
		}
		elseif(is_file($file) === true)
		{
			$repackedZip->addFile($file, str_replace('\', '/', str_replace($source . $ds, '', $file)));
		}
	}
	$repackedZip->close();

	$newFileData = new FileData();
	$newFileData->setSrc($newFilepath);

	return $newFileData;
}