Scala script to find duplicate resources in android projects

DuplicatesFinder.scala

/*
 * to run from console:
 * $scala DuplicatesFinder.scala /path/to/android/project
 */

import java.io.File
import scala.xml._

val folder = args(0)
val project = new File(folder)
if (!project.exists()) {
  println("Folder not exists.\nExit...")
  System.exit(0)
}

// Try to find original strings.xml in 'values' folder
val stringsOrig = findStrings(project, "values$")

if (stringsOrig.isEmpty) {
  println("res/values/strings.xml not found\nExit...")
  System.exit(0)
} else {
  println("Found original " + stringsOrig.head.getName)
}

//Try to find localized strings.xml in 'values*' folders
val stringsLocalized = findStrings(project, "values.")
if (stringsLocalized.isEmpty) {
  println("Localized resources not found\nExit...")
  System.exit(0)
} else {
  println("\nFound localized:")
  stringsLocalized.foreach(printNiceName)
  println
}

val resourcesOrig = (XML.loadFile(stringsOrig.head) \\ "resources")
// Original sets of resource names
val stringOrig = mkSet(resourcesOrig, "string")
val stringArrayOrig = mkSet(resourcesOrig, "string-array")
val pluralsOrig = mkSet(resourcesOrig, "plurals")

println("\nFound duplicate resources in")
stringsLocalized.foreach(f => {
  val r = XML.loadFile(f) \\ "resources"
  val string = mkSet(r, "string")
  val stringArray = mkSet(r, "string-array")
  val plurals = mkSet(r, "plurals")
  printNiceName(f)
  println("NOT LOCALIZED:")
  println("strings: " + (stringOrig &~ string))
  println("string-arrays: " + (stringArrayOrig &~ stringArray))
  println("plurals: " + (pluralsOrig &~ plurals))
  println("OBSOLETE: ")
  println("strings: " + (string &~ stringOrig))
  println("string-arrays: " + (stringArray &~ stringArrayOrig))
  println("plurals: " + (plurals &~ pluralsOrig))
  println
})

def findStrings(root: File, regex: String) =
  root.listFiles
    .withFilter(_.getName == "res")
    .flatMap(_.listFiles.filter(f => regex.r.findFirstIn(f.getName).isDefined))
    .flatMap(_.listFiles.filter(_.getName == "strings.xml"))

def mkSet(ns: NodeSeq, tag: String) =
  (ns \ tag) map (_ \ "@name" text) toSet

def printNiceName(f: File) = println(f.getParentFile.getName + "/" + f.getName)