scala hex to base32. Finding the prefix for addresses in NEM crypto

nem_hex_to_base_32.sc

#!/usr/bin/env amm
import $ivy.`org.apache.hadoop:hadoop-common:3.2.0`, org.apache.commons.codec.binary.Base32

// HexBytesUtil from https://gist.githubusercontent.com/tmyymmt/3721117/raw/70af27f30df0ec0084e37e7fe3ff0a547bf8020b/HexBytesUtil.scala
object HexBytesUtil {

    def hex2bytes(hex: String): Array[Byte] = {
      if(hex.contains(" ")){
        hex.split(" ").map(Integer.parseInt(_, 16).toByte)
      } else if(hex.contains("-")){
        hex.split("-").map(Integer.parseInt(_, 16).toByte)
      } else {
        hex.sliding(2,2).toArray.map(Integer.parseInt(_, 16).toByte)
      }
    }

    def bytes2hex(bytes: Array[Byte], sep: Option[String] = None): String = {
      sep match {
      case None =>  bytes.map("%02x".format(_)).mkString
      case _ =>  bytes.map("%02x".format(_)).mkString(sep.get)
      }
      // bytes.foreach(println)
    }

    def example {
      val data = "48 65 6C 6C 6F 20 57 6F 72 6C 64 21 21"
      val bytes = hex2bytes(data)
      println(bytes2hex(bytes, Option(" ")))

      val data2 = "48-65-6C-6C-6F-20-57-6F-72-6C-64-21-21"
      val bytes2 = hex2bytes(data2)
      println(bytes2hex(bytes2, Option("-")))

      val data3 = "48656C6C6F20576F726C642121"
      val bytes3 = hex2bytes(data3)
      println(bytes2hex(bytes3))
    }

  }

val base32 = new Base32

def transform(hexNoPrefix: String): String = {
        val arrayOfBytes = HexBytesUtil.hex2bytes(hexNoPrefix)
        base32.encodeAsString(arrayOfBytes)
}
def printTransformation(hexNoPrefix: String): Unit = {
    print("hex is "+hexNoPrefix)
        println(" whose convertion is " + transform(hexNoPrefix))
}

printTransformation("68") // main net NEM
printTransformation("98") // test net NEM





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"encoding.base32.hex.sc" 58L, 1652C written