Customized String interpolation example

StringInterpolation.scala

/**
  * @author Kevin Lee
  * @since 2016-04-09
  */
object StringInterpolation extends App {
  implicit class EscapeNewLineAndDoubleQuote(val sc: StringContext) extends AnyVal {
    def esc(args: Any*): String = {

      val strings = sc.parts.iterator
      val expression = args.iterator

      val builder = new StringBuilder(strings.next)
      while (strings.hasNext) {
        builder append expression.next.toString.replaceAllLiterally("\n", "\\n").replaceAllLiterally("\r", "\\r").replaceAllLiterally("\"", """\"""")
        builder append strings.next
      }
      builder.toString
    }
  }


  private val nl = "\n"
  private val dq = "\""

  // blah blah\nblah \"blah\"\nblah
  println(esc"blah blah\nblah ${dq}blah${dq}${nl}blah")
  
  // blah blah\nblah \"blah\"\nblah
  println(esc"""blah blah\nblah ${dq}blah${dq}${nl}blah""")

}

@damby 😠