react-gettext/lib/gettext.js

Gettext implementation for React based project.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.gettext = gettext;
exports.ngettext = ngettext;
exports.xgettext = xgettext;
exports.nxgettext = nxgettext;
exports.default = void 0;
var DELIMITER = "\x04"; // End of Transmission (EOT)

function getTranslations(catalog) {
  return typeof catalog === 'function' ? catalog() : catalog;
}

function getPluralForm(plural, n) {
  // return 0 if n is not integer
  if (Number.isNaN(parseInt(n, 10))) {
    return 0;
  } // if pluralForm is function, use it to get plural form index


  if (typeof plural === 'function') {
    return plural(n);
  } // if pluralForm is string and contains only "n", "0-9", " ", "!=?:%+-/*><&|()"
  // characters, then we can "eval" it to calculate plural form


  if (typeof plural === 'string' && !plural.match(/[^n0-9 !=?:%+-/*><&|()]/i)) {
    /* eslint-disable no-new-func */
    var calcPlural = Function('n', "return ".concat(plural));
    /* eslint-enable no-new-func */

    return +calcPlural(n);
  }

  return 0;
}

function gettext(catalog, message) {
  var messages = getTranslations(catalog);
  return Object.prototype.hasOwnProperty.call(messages, message) ? messages[message] : message;
}

function ngettext(catalog, plurality, singular, plural, n) {
  var messages = getTranslations(catalog);
  var pluralIndex = getPluralForm(plurality, n);
  var defaultValue = n > 1 ? plural : singular;
  return Object.prototype.hasOwnProperty.call(messages, singular) && Array.isArray(messages[singular]) && messages[singular].length > pluralIndex && pluralIndex >= 0 ? messages[singular][pluralIndex] : defaultValue;
}

function xgettext(catalog, message, context) {
  var messages = getTranslations(catalog);
  var key = context + DELIMITER + message;
  return Object.prototype.hasOwnProperty.call(messages, key) ? messages[key] : message;
}

function nxgettext(catalog, plurality, singular, plural, n, context) {
  var messages = getTranslations(catalog);
  var pluralIndex = getPluralForm(plurality, n);
  var defaultValue = n > 1 ? plural : singular;
  var key = context + DELIMITER + singular;
  return Object.prototype.hasOwnProperty.call(messages, key) && Array.isArray(messages[key]) && messages[key].length > pluralIndex && pluralIndex >= 0 ? messages[key][pluralIndex] : defaultValue;
}

var _default = {
  gettext: gettext,
  ngettext: ngettext,
  xgettext: xgettext,
  nxgettext: nxgettext
};
exports.default = _default;