jslingua/src/fra/fra.lang.mjs

Language processing modules

import Lang from "../lang.mjs";

class FraLang extends Lang {
  static CS = {};
  static TR = {};
  static langCode = "fra";

  /*
  * Write the Arabic number into French letters
  * @override
  */
  static nbr2words(num){
    if (isNaN(num)) return "";

    if(num < 0) return "moins " + this.nbr2words(-num);

    if (num === 81) return "quatre-vingt-un";
    if (num === 80) return "quatre-vingts";

    if (num <= 20) return lookup[num];

    if (num < 100 ){

      let div = ~~(num/10) * 10,
      rem = ~~(num % 10);

      let pronounce = "";
      if (div === 70 || div === 90) {
        pronounce = lookup[div - 10];
        rem += 10;
      }
      else pronounce = lookup[div];

      if (rem > 0) {
        if (rem === 1 || rem === 11) pronounce += " et ";
        else pronounce += "-";
        pronounce += lookup[rem];
      }

      return pronounce;

    }


    let bigIdx = bigNbr.length -1;
    while (bigIdx >= 0 && num < bigNbr[bigIdx]) bigIdx--;

    let div = ~~(num/bigNbr[bigIdx]),
    rem = ~~(num % bigNbr[bigIdx]);

    let pronounce = (div === 1)? "": this.nbr2words(div) + " ";
    pronounce += lookup[bigNbr[bigIdx]];

    //if (div > 1) pronounce += "s"; //plural

    if (rem > 0){
      pronounce += " " + this.nbr2words(rem);
    }

    return pronounce;
  }
}

FraLang._nChs("BasicLatin", 0x0000, 0x007F);
FraLang._nChs("Latin-1Supplement", 0x00A0, 0x00FF);

FraLang._nTrans("min2maj", "Miniscule to Majuscule", [
  {offset:-0x0020, begin:0x0061, end:0x007A},
  {offset:-0x0020, begin:0x00E0, end:0x00FF}
]);
FraLang._nTrans("maj2min", "Majuscule to Miniscule", [
  {offset:0x0020, begin:0x0041, end:0x005A},
  {offset:0x0020, begin:0x00C0, end:0x00DF}
]);

//==========================================
// CONSTANTS
//==========================================

//https://fr.wikipedia.org/wiki/Liste_de_nombres
//https://openclassrooms.com/courses/nombres-et-operations-1/prononcer-et-ecrire-les-nombres-en-francais
const lookup = {
  0: "zéro", 1: "un", 2: "deux", 3:"trois", 4: "quatre",
  5: "cinq", 6: "six", 7: "sept", 8: "huit", 9: "neuf",

  10: "dix", 11: "onze", 12: "douze", 13: "treize",
  14: "quatorze", 15: "quinze", 16: "seize",
  17: "dix-sept", 18: "dix-huit", 19: "dix-neuf",

  20: "vingt", 30: "trente", 40: "quarante", 50: "cinquante",
  60: "soixante", 80: "quatre-vingt", //70 and 90 can be deduced from 60 and 80

  100: "cent",
  1000: "mille",
  1000000: "million",
  1000000000: "billion"
},
bigNbr = [
  100, 1000, 1000000, 1000000000
  //1000000000, 1000000, 1000, 100, 10
];

export default FraLang;