A scala script that counts the number of lines in source code files

count-lines.scala

#!/bin/sh
exec /opt/analysis/analysis "$0" "$@"
!#

import scalax.file._
import scalax.file.ImplicitConversions._

val dirs  = if (args.size>0) args.toList else List(".")
val exts = List(
   "scala","xml","drl","java","ksh","sh","sql","sbt","properties","conf"
 )
 
val excludes = List( "/examples/", "/target/").map(_.r)

case class Result(source:Path, from:String) {
 lazy val lines = source.lines().size
 val ext = source.name.split("[.]").last
}

val sources:List[Result] = 
  for {
    dir <- dirs
    found <- (dir ** "*.*").filter(_.isFile).toList
       if !excludes.exists(_.findFirstIn(found.path).isDefined)
       if exts.exists(ext => found.name.endsWith("."+ext))
  } yield Result(found, dir)
  
def showstat4(sources:List[Result], title:String) {
  println("----------------------------")
  println(title)
  val lines=sources.map(_.lines).sum
  println(s"global lines count : $lines (in ${sources.size} files)")

  for {
    (ext, sources4ext) <- sources.groupBy(_.ext)
  } {
      val count = sources4ext.map(_.lines).sum
      println(s"lines count for $ext : $count (in ${sources4ext.size} files)")
  }
}

showstat4(sources, "All directories")
for {(dir, sources4dir) <- sources.groupBy(_.from) if dirs.size>1 }
  showstat4(sources4dir, s"For directory : $dir")