+ compR, err := zstd.NewReader(src)
+ if err != nil {
+ log.Fatalln(err)
+ }
+ br := bufio.NewReaderSize(compR, 1<<17)
+
+ compW, err := zstd.NewWriter(tmp,
+ zstd.WithEncoderLevel(zstd.SpeedBestCompression))
+ if err != nil {
+ log.Fatalln(err)
+ }
+ bw := bufio.NewWriterSize(compW, 1<<17)
+