add support to restore .sql.gz files

[bigio]

No description provided.

[jeff1326]

In my project, in use gzopen function even on not gzipped file. Much more simple and never got issue with the output.

Exemple where $filename = 'something.log';, it fallback on something.log.gz if the file doesn't exists. Both case work fine.

        if(!file_exists($filename)) {
            $filename .= '.gz';
        }

        if (file_exists($filename)) {
            return response()->streamDownload(function () use ($filename) {
                $handle = gzopen($filename, 'r');
                if ($handle) {
                    while (($buffer = gzgets($handle)) !== false) {
                        echo $buffer;
                    }
                    if (!gzeof($handle)) {
                        throw new Exception('Failure to read file');
                    }
                    gzclose($handle);
                } else {
                    throw new Exception('Failure to open file');
                }
            });
        }