e64_2.11.0.2.0.source-code.input.scala Maven / Gradle / Ivy

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package base64

import java.nio.ByteBuffer
import java.nio.charset.Charset

@annotation.implicitNotFound(
  msg = "base64 Input[T] type class instance for type ${T} not found")
trait Input[T] {
  def apply(t: T): Array[Byte]
}

object Input {
  private[this] val utf8 = Charset.forName("UTF-8")

  implicit val ByteBuffers: Input[ByteBuffer] =
    new Input[ByteBuffer] {
      def apply(in: ByteBuffer) = in.array
    }

  implicit val Bytes: Input[Array[Byte]] =
    new Input[Array[Byte]] {
      def apply(in: Array[Byte]) = in
    }

  implicit val Utf8Str: Input[String] =
    new Input[String] {
      def apply(in: String) =
        Str(in, utf8)
    }

  implicit val Str: Input[(String, Charset)] =
    new Input[(String, Charset)] {
      def apply(in: (String, Charset)) =
        Bytes(in._1.getBytes(in._2.name()))
    }

  def apply[T: Input](in: T) = implicitly[Input[T]].apply(in)
}