Input/Output

Getting the byte array out of a Buf

This can be done via Buf.ByteArray.Owned.extract(byteArrayBuf). If you intend to mutate the data use the Shared variant instead of Owned.

Scala:

import com.twitter.io.Buf

def toBytes(buf: Buf): Array[Byte] = {
  Buf.ByteArray.Owned.extract(buf)
}

Java:

import com.twitter.io.Buf;

byte[] toBytes(Buf buf) {
  return Bufs.ownedByteArray(buf);
}

Getting the String out of a Buf.Utf8

This can be done by the Buf.StringCoder.unapply(Buf) methods for the various charsets on the Buf companion object and Bufs from Java.

Scala:

import com.twitter.io.Buf

def toString(buf: Buf): String = {
  val Buf.Utf8(str) = buf
  str
}

Java:

import com.twitter.io.Buf;

String toString(Buf buf) {
  return Bufs.asUtf8String(buf);
}

Util

Miscellaneous Idiomatic Scala Utilities & Wrappers, by Twitter.

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