protected function uncompress($fileName)
	{
		$fileNameUncompressed = $this->getUncompressedFileName($fileName);
		$command = sprintf('gzip -dc %s > %s', $fileName, $fileNameUncompressed);
		if ($this->console->run($command) !== true)
			$this->line($this->colors->getColoredString("\n".'Uncompress of gzipped file failed.'."\n",'red'));

		return $fileNameUncompressed;
	}