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• 0.4.0-M1
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• Content-Range.scala

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spinoco.protocol.http.header.Content-Range.scala Maven / Gradle / Ivy

package spinoco.protocol.http.header

import scodec.Codec
import scodec.codecs._
import spinoco.protocol.http.header.value.HeaderCodecDefinition
import spinoco.protocol.common.codec._
import spinoco.protocol.common.Terminator



sealed case class `Content-Range`(from: Long, to: Long, total: Option[Long]) extends DefaultHeader

object `Content-Range` {

  private val scodec: Codec[`Content-Range`] = {
    import spinoco.protocol.http.codec.helper._

    val maybeTotal: Codec[Option[Long]] = choice(
      asciiConstant("*").xmap[None.type](_ => None, _ => ()).upcast
      , longAsString.xmap[Some[Long]](l => Some(l), { case Some(l) => l }).upcast
    )
    val fromTo: Codec[(Long, Long)] =
      terminated(longAsString, Terminator.constantString1("-")) ~ longAsString

    ignoreWS ~> asciiConstant("bytes", ignoreCase = true) ~> whitespace() ~>
    (terminated(fromTo, Terminator.constantString1("/")) ~ maybeTotal).xmap (
      { case ((from, to), maybeTotal) => `Content-Range`(from, to, maybeTotal) }
      , cr => ((cr.from, cr.to), cr.total)
    )
  }

  val codec = HeaderCodecDefinition[`Content-Range`](scodec)
}