Scala: InputStream to Array[Byte]

Question

With Scala, what is the best way to read from an InputStream to a bytearray?

I can see that you can convert an InputStream to char array

Source.fromInput         


        

Answer 1

Here's an approach using scalaz-stream:

import scalaz.concurrent.Task
import scalaz.stream._
import scodec.bits.ByteVector

def allBytesR(is: InputStream): Process[Task, ByteVector] =
  io.chunkR(is).evalMap(_(4096)).reduce(_ ++ _).lastOr(ByteVector.empty)