cpi-crutches.groovy

package io.rsug.sf.sow

import groovy.json.StringEscapeUtils
import com.ibm.icu.text.Transliterator

class Main {
    static String createGroovyDecl(String unicode) {
        String x = StringEscapeUtils.escapeJava(unicode)
        Transliterator toEn = Transliterator.getInstance("Russian-Latin/BGN")
        String varname = "c" + toEn.transliterate(unicode)
        "String $varname = \"$x\""
    }

    static main(args) {
        println createGroovyDecl("Да")
        println createGroovyDecl("Дни")
        println createGroovyDecl("Недели")
        println createGroovyDecl("Месяцы")
        println createGroovyDecl("Годы")

    }
}
/*
String cDa = "\u0414\u0430"
String cDni = "\u0414\u043D\u0438"
String cNedeli = "\u041D\u0435\u0434\u0435\u043B\u0438"
String cMesyatsy = "\u041C\u0435\u0441\u044F\u0446\u044B"
String cGody = "\u0413\u043E\u0434\u044B"
*/

Для транслитерации см icu

com.ibm.icu icu4j 61.1

Transliterator toLatinTrans = Transliterator.getInstance("Russian-Latin/BGN");
String result = toLatinTrans.transliterate("русское");
System.out.println(result);