fun main()

in tools/copyRWrapper/src/CopyRWrapper.kt [25:55]

• 28 lines of code
• 13 McCabe index (conditional complexity)

fun main(args: Array<String>) {
  val rwrapperDirectory = File(args[0])
  val destinationDirectory = File(args[1])
  val customRWrapperPath = if (args.size > 2) File(args[2]) else null
  if (customRWrapperPath == null && !System.getProperty("os.name").startsWith("windows", ignoreCase = true)) {
    "./build_rwrapper.sh".runCommand(rwrapperDirectory)
  }

  destinationDirectory.mkdirs()

  rwrapperDirectory
    .takeIf { it.exists() && it.isDirectory }
    ?.list { _, name -> name.startsWith("rwrapper") || name.startsWith("R-") ||
                        name == "R" || name.startsWith("fsnotifier-") || name == "rkernelVersion.txt" }
    ?.map { Paths.get(rwrapperDirectory.toString(), it).toFile() }
    ?.forEach {
    if (it.isDirectory) {
      FileUtils.copyDirectoryToDirectory(it, destinationDirectory)
    } else {
      FileUtils.copyFileToDirectory(it, destinationDirectory)
    }
  } ?: check(false) { "cannot find directory: ${rwrapperDirectory}" }

  customRWrapperPath
    ?.takeIf { it.exists() && it.isDirectory }
    ?.list { _, name -> name.startsWith("rwrapper") || name.startsWith("fsnotifier-") || name == "rkernelVersion.txt" }
    ?.map { Paths.get(customRWrapperPath.toString(), it).toFile() }
    ?.forEach {
      FileUtils.copyFileToDirectory(it, destinationDirectory)
    } ?: check(customRWrapperPath == null ) { "cannot find directory: ${customRWrapperPath}" }
}