scala.scalanative.io.package.scala Maven / Gradle / Ivy

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package scala.scalanative

import java.nio.ByteBuffer
import java.nio.file.Path
import scala.collection.JavaConverters._

package object io {
  // We allocate a pool of direct buffers. Due to virtual memory
  // semantics, only the used part is going to be actually provided
  // by the underlying OS.
  private val pool = new ByteBufferPool

  def withScratchBuffer(f: ByteBuffer => Unit): Unit = {
    val buffer = pool.claim()
    buffer.clear
    try f(buffer)
    finally pool.reclaim(buffer)
  }

  def packageNameFromPath(path: Path): String = {
    val fileName = path.getFileName.toString
    val base     = fileName.split('.').init.mkString(".")

    Option(path.getParent) match {
      case Some(parent) => parent.resolve(base).asScala.mkString(".")
      case None         => base
    }
  }
}