precis-js/lib/profile/NicknameProfile.js

A JavaScript implementation of RFC 7564 (The PRECIS Framework).

// Generated by CoffeeScript 1.10.0
(function() {
  var EmptyStringError, NicknameProfile, precis;

  EmptyStringError = require('../error/EmptyStringError');

  precis = require('../constants');

  module.exports = NicknameProfile = (function() {
    function NicknameProfile() {}

    NicknameProfile.prototype.stringClass = precis.STRING_CLASS.FREEFORM;

    NicknameProfile.prototype.widthMapping = precis.WIDTH_MAPPING.NONE;

    NicknameProfile.prototype.caseMapping = precis.CASE_MAPPING.LOWERCASE;

    NicknameProfile.prototype.normalization = precis.NORMALIZATION.KC;

    NicknameProfile.prototype.directionality = precis.DIRECTIONALITY.NONE;

    NicknameProfile.prototype.map = function(codepoints, enforcer) {
      var i, last, state;
      i = codepoints.length - 1;
      last = i;
      state = 0;
      while (i >= 0) {
        if (enforcer.propertyReader.isNonAsciiSpace(codepoints[i])) {
          codepoints[i] = 0x20;
        }
        switch (state) {
          case 0:
            if (codepoints[i] === 0x20) {
              codepoints.splice(i, 1);
            } else {
              last = i;
              state = 1;
            }
            break;
          case 1:
            if (codepoints[i] === 0x20) {
              state = 2;
            } else {
              last = i;
            }
            break;
          case 2:
            if (codepoints[i] !== 0x20) {
              if (last > i + 2) {
                codepoints.splice(i + 1, last - i - 2);
              }
              last = i;
              state = 1;
            }
        }
        --i;
      }
      if (last > 0) {
        return codepoints.splice(0, last);
      }
    };

    NicknameProfile.prototype.validate = function(codepoints) {
      if (codepoints.length < 1) {
        throw new EmptyStringError();
      }
    };

    return NicknameProfile;

  })();

}).call(this);