Resource file reader

ClasspathReader.scala

import java.io.FileNotFoundException
import java.util.zip.GZIPInputStream

import scala.io.Codec

object ClasspathReader {
  def getResourceAsStream(filename: String) = {
    // why doesn't the more scala-like getClass.getResourceAsStream work?
    val inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream(filename)
    if (inputStream == null) throw new FileNotFoundException(s"Couldn't find $filename on the classpath")
    inputStream
  }
  def getGzipResourceAsStream(filename: String) = new GZIPInputStream(getResourceAsStream(filename))

  def getLines(filename: String) = {
    val inputStream =
      if (filename.matches(""".*\.gz"""))
        getGzipResourceAsStream(filename)
      else
        getResourceAsStream(filename)

    io.Source.fromInputStream(inputStream)(Codec.UTF8).getLines()
  }
}