Read Write Files

A Path are both Input and Output objects as well as Seekable so all read/write options available through those are also possible directly on Path objects

Basic Read Write

Basic read and write options. Not all options are demonstrated so review the {/core} operations for Input,Output,Seekable etc....

    import scalax.file.Path
    implicit val codec = scalax.io.Codec.UTF8

    // Take the first set of non-empty lines, keeping the terminator for each line
    val nonEmptySpan = Path("file").lines(includeTerminator = true).
      dropWhile{_.isEmpty}.
      takeWhile{_.nonEmpty}

    // Write result from previous read to a new file
    Path("nonEmpty").writeStrings(nonEmptySpan)

Safe Read Write

Safe way to read and write a file. Normal try-catch will also work, scala.util.control.Exception is nice when used with an API that takes Either or Option.

    import scalax.file.{
      FileOps, Path, NotFileException}
    import java.io.FileNotFoundException
    import scala.util.control.Exception._
    // see codec examples in scala io core for details on why there is an implicit codec here
    implicit val codec = scalax.io.Codec.UTF8

    val file: FileOps =  Path("file")
    val result:Either[Throwable,String] = catching (classOf[NotFileException],
                                          classOf[FileNotFoundException]) either { file.slurpString}

    result match {
      case Left(error) => println("oops not a file maybe a directory: "+error.getMessage)
      case Right(data) => println (data)
    }