extended-language-list/language-list.js

Map Stores ISO 639-1 language codes to language names and vice versa (multilang version).

'use strict'
const en = require("./lang/en.json");
const ar = require("./lang/ar.json");
const hi = require("./lang/hi.json");
const ml = require("./lang/ml.json");
const tl = require("./lang/tl.json");
const ur = require("./lang/ur.json");

let languageNameMap = {};
let languageCodeMap = {};

function populateMaps(data, lang) {
  let nameMap = {};
  let codeMap = {};
  data.forEach(function (e) {
    nameMap[e.language.toLowerCase()] = e.code;
    codeMap[e.code.toLowerCase()] = e.language;
  });
  languageCodeMap[lang] = codeMap;
  languageNameMap[lang] = nameMap;
}

populateMaps(en, "en");
populateMaps(ar, "ar");
populateMaps(hi, "hi");
populateMaps(ml, "ml");
populateMaps(tl, "tl");
populateMaps(ur, "ur");

module.exports = LanguageList;

function LanguageList() {
  if (!(this instanceof LanguageList)) {
    return new LanguageList();
  }
}

LanguageList.prototype.getLanguageCode = function getLanguageCode(name, lang) {
  return languageNameMap[lang] ? languageNameMap[lang][name.toLowerCase()] : undefined;
};

LanguageList.prototype.getLanguageName = function getLanguageNames(code, lang) {
  return languageCodeMap[lang] ? languageCodeMap[lang][code.toLowerCase()] : undefined;
};

LanguageList.prototype.getLanguageNames = function getLanguageNames(lang) {
  switch (lang) {
    case "en":
      return en.map(function (l) {
        return l.language
      });
    case "ar":
      return ar.map(function (l) {
        return l.language
      });
    case "hi":
      return hi.map(function (l) {
        return l.language
      });
    case "ml":
      return ml.map(function (l) {
        return l.language
      });
    case "tl":
      return tl.map(function (l) {
        return l.language
      });
    case "ur":
      return ur.map(function (l) {
        return l.language
      });
    default:
      return []
  }
};

LanguageList.prototype.getLanguageCodes = function getLanguageCodes(lang) {
  switch (lang) {
    case "en":
      return en.map(function (l) {
        return l.code
      });
    case "ar":
      return ar.map(function (l) {
        return l.code
      });
    case "hi":
      return hi.map(function (l) {
        return l.code
      });
    case "ml":
      return ml.map(function (l) {
        return l.code
      });
    case "tl":
      return tl.map(function (l) {
        return l.code
      });
    case "ur":
      return ur.map(function (l) {
        return l.code
      });
    default:
      return []
  }
};

LanguageList.prototype.getData = function getData(lang) {
  switch (lang) {
    case "en":
      return en;
    case "ar":
      return ar;
    case "hi":
      return hi;
    case "ml":
      return ml;
    case "tl":
      return tl;
    case "ur":
      return ur;
    default:
      return [];
  }
};