human-readable-ids.js/index.js

/*jshint -W054 */
;(function (exports) {
  'use strict';

  var lists = exports.humanReadableIds || require('./lists')
    , shuffle = exports.knuthShuffle || require('knuth-shuffle').knuthShuffle
    , animals = []
    , adjectives = []
    , numbers = []
    ;

  function genNumbers() {
    var i = 2
      ;

    numbers = [];
    numbers.push(0);
    // 1 is not plural, so we skip it
    for (i = 2; i <= 100; i += 1) {
      numbers.push(i);
    }

    return shuffle(numbers);
  }

  function populate() {
    if (!adjectives.length) {
      adjectives = shuffle(lists.adjectives.slice(0));
    }
    if (!animals.length) {
      animals = shuffle(lists.animals.slice(0));
    }
    if (!numbers.length) {
      numbers = shuffle(genNumbers());
    }
  }

  function random() {
    populate();
    return adjectives.pop()
      + '-' + animals.pop()
      + '-' + numbers.pop()
      ;
  }

  // Accepts a format as a stirng of 'a' for adjective, 'n' for noun, and '#' for number
  function get(format) {
    populate();
    hri = new Array();
    for (var i = 0; i < format.length; i++) {
      switch (format[i]) {
        case 'a': hri.push(adjectives.pop()); break;
        case 'n': hri.push(animals.pop()); break;
        case '#': hri.push(adjectives.pop()); break;
        default:
          throw 'Unexpected value ' + format[i] + '. Expected a,n,#';
      }

    return hri.join('-');
  }

  exports.humanReadableIds = { random: random };
  exports.hri = exports.humanReadableIds;

}('undefined' !== typeof exports && exports || new Function('return this')()));