HexDump in Go

hexdump.go

// hexDump
func hexDump(file io.Reader) {
	dumpLimit := &io.LimitedReader{
		R: file,
		N: 512,
	}

	b, _ := ioutil.ReadAll(dumpLimit)

	for len(b) > 32 {
		slice := b[0:32]

		str := strings.Builder{}
		for _, c := range slice {
			if c < 32 || c > 127 {
				str.WriteString(".")
			} else {
				str.WriteByte(c)
			}
		}

		fmt.Printf("% 0x %s\n", slice, str.String())

		b = b[32:]
	}
}