node-elizabeth/lib/util.js


'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.asciiLetters = exports.digits = exports.asciiLowerCase = exports.asciiUpperCase = undefined;
exports.pull = pull;
exports.luhnChecksum = luhnChecksum;
exports.uniform = uniform;

var _fs = require('fs');

var _fs2 = _interopRequireDefault(_fs);

var _path = require('path');

var _path2 = _interopRequireDefault(_path);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function pull(file, locale) {
  try {
    var localeFilePath = _path2.default.join(__dirname, 'locales', locale, file);
    return JSON.parse(_fs2.default.readFileSync(localeFilePath, 'utf-8'));
  } catch (e) {
    throw new Error(locale + ' is unsupported');
  }
}

function luhnChecksum(num) {
  var arr = [];
  num = num.toString().replace(/\D\-|\s|\/|\*/g, '');
  for (var i = 0; i < num.length; i++) {
    if (i % 2 === 0) {
      var m = parseInt(num[i]) * 2;
      if (m > 9) {
        arr.push(m - 9);
      } else {
        arr.push(m);
      }
    } else {
      var n = parseInt(num[i]);
      arr.push(n);
    }
  }
  var sum = 0;
  arr.map(function (item) {
    return sum += item;
  });
  return sum % 10;
}

function uniform(a, b, fixed) {
  return (Math.random() * (b - a) + a).toFixed(fixed) * 1;
}

var asciiUpperCase = exports.asciiUpperCase = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'];
var asciiLowerCase = exports.asciiLowerCase = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
var digits = exports.digits = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
var asciiLetters = exports.asciiLetters = [].concat(asciiUpperCase, asciiLowerCase);