Scala's REPL support script.You can use file easily.

repl_support.scala

import scala.io.Source
import java.io.{FileInputStream,FileOutputStream,InputStream,OutputStream,File}
import scala.xml.{XML,Elem}

// usage
// val fileAsText = "clannad.txt" loadText
// "air.txt" << "This text is written to file air.txt"
//

class FileObject( filePath : String) {
  def lines : Iterator[String] = {
    val source = Source.fromFile(filePath)
    source.getLines
  }
  
  private def _stream[T]( func : InputStream => T) : T = {
    val input = new FileInputStream(filePath)
    try{
      func(input)
    }finally{
      input.close()
    }
    
  
  }
  
  private def _input[T]( func : InputStream => T) : T = {
    val input = new FileInputStream(filePath)
    try{
      func(input)
    }finally{
      input.close()
    }
    
  
  }
  
  def loadBytes : Array[Byte] = {
    _input( input => {
      val b = new Array[Byte](input.available)
      input.read(b)
      b
    })
  }
  
  def loadText : String = loadText("utf-8")
  def loadText(encoding : String) : String = {
    _input( input => {
      val b = new Array[Byte](input.available)
      input.read(b)
      new String(b,encoding)
    })
  }
  
  def loadXml : Elem = {
    _input(XML.load(_))
  }
  
  private def _output[T](func : OutputStream => T) : T = {
    val output = new FileOutputStream(filePath)
    try{
      func(output)
    }finally{
      output.close
    }
  }
  
  def <<(text : String) : Unit = {
    _output(output => {
      output.write(text.getBytes("utf8"))
    })
  }
  def <<(data : Array[Byte]) : Unit = {
    _output(output => {
      output.write(data)
    })
  }
  
  def deleteFile : Boolean = {
    val f = new File(filePath)
    if(f.exists){
      f.delete
    }else{
      false
    }
  }
  
}

implicit def strToFileObj( path : String) = new FileObject(path)