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  1. object Main extends App {
  2.   trait Locale
  3.   case object EN extends Locale
  4.   case object FR extends Locale
  5.  
  6.   type I18NMap = Map[String,Map[Locale,String]]
  7.  
  8.   implicit class I18NOps(sc: StringContext) {
  9.     def iformat(args: Any*)(key: String)(implicit i18nMap: I18NMap, currentLocale: Locale) = {
  10.       val translationMaybe = for {
  11.         translations <- i18nMap get key
  12.         translationForLocale <- translations get currentLocale
  13.       } yield translationForLocale
  14.       val format = translationMaybe.fold(sc.parts.mkString("%s"))(identity)
  15.       args.foldLeft(format)({ case (format,arg) => format.replaceFirst("%s",arg.toString)})
  16.     }
  17.  
  18.     def i(args: Any*)(implicit i18nMap: I18NMap, currentLocale: Locale) = {
  19.       val key = sc.parts.mkString("%s")
  20.       iformat(args :_*)(key)(i18nMap,currentLocale)
  21.     }
  22.   }
  23.  
  24.   implicit val myi18n: I18NMap =
  25.     Map("Hello, my name is %s" ->
  26.         Map(EN -> "Hello, my name is %s.",
  27.         FR -> "Bonjour, mon nom est %s."),
  28.     "salutation" ->
  29.         Map(FR -> "Salut, %s!"))
  30.  
  31.   implicit val currentLocale: Locale = FR
  32.  
  33.   val name = "John"
  34.   println(i"Hello, my name is $name")
  35.  
  36.   println(iformat"Hi, $name!"("salutation"))
  37.  
  38.   println(i"Hello,this string is untranslated.")
  39. }
Success #stdin #stdout 0.41s 322240KB
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Standard input is empty
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Bonjour, mon nom est John.
Salut, John!
Hello,this string is untranslated.
https://ideone.com/Vk8QpC
language:
Scala (scala 2.12.8)
created:
10 years ago
visibility:
public

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