Golang gzip Example

gzip_example.go

func gzipFile(in string) (string, error) {
	in, err := os.Open(in)
	defer in.Close()
	if err != nil {
		return "", err
	}
	out, err := os.Create(fmt.Sprintf("%s.gz", in))
	defer out.Close()
	if err != nil {
		return "", err
	}
	gzipW := gzip.NewWriter(out)
	defer gzipW.Close()
	if _, err := io.Copy(gzipW, in); err != nil {
		return "", err
	}
	return out, nil
}