MojibakePatterns.scala

import java.io.File

import com.github.tototoshi.csv.CSVWriter

object Mojibake extends App {

  val f = new File("./mojibake-patterns.csv")
  val writer = CSVWriter.open(f)
  val targetString = "入れ替わってる〜!?"
  val encodings = List("UTF-8", "EUC_JP", "Shift-JIS", "ISO-2022-JP")

  writer.writeRow(List("変換元", "変換先", "結果"))

  encodings.map(x => (x, encodings)).toMap.foreach { case (from, to) =>
    to.foreach { _to =>
      val row = List(from, _to, new String(targetString.getBytes(from), _to))
      writer.writeRow(row)
    }
  }

  writer.close()
}