Function keyBytesFromStr

store/smt_test.go:2088–2108

keyBytesFromStr converts a string of binary bits to a byte slice CONTRACT: str must be < than 8 bits

(str string)

// keyBytesFromStr converts a string of binary bits to a byte slice
// CONTRACT: str must be < than 8 bits
func keyBytesFromStr(str string) []byte {
	// create a new key from the byts
	var byts []byte
	if str != "" {
		leftPadding := 0
		for _, ch := range str {
			if ch != '0' {
				break
			}
			leftPadding++
		}
		if leftPadding == len(str) {
			leftPadding--
		}
		val, _ := strconv.ParseUint(str, 2, 8)
		// convert the bits to bytes now producing the key
		byts = []byte{byte(val), byte(leftPadding)}
	}
	// return the key bytes
	return byts
}