Sort algorithm for Icelandic characters and other special characters.

README.md

Usage

Create some array:

var names = [
  'Jón Margeir Jónson',
  'Fríður',
  'Ægir',
  'Friðgeir',
  'Ásmundur',
  '.DS_Store',
  'Élgraður',
  'Sólmundur',
  'Aron Ómarsson',
  'Aron Omarsson'
];

Sort the thing:

names = names.sort( international() );

Now the array is sorted as follows:

[
  '.DS_Store',
  'Aron Omarsson',
  'Aron Ómarsson',
  'Ásmundur',
  'Élgraður',
  'Friðgeir',
  'Fríður',
  'Jón Margeir Jónson',
  'Sólmundur',
  'Ægir'
]

groperty.js

function groperty ( obj, propList ) {
  if ( typeof obj !== 'object' ) return obj;

  if( Object.prototype.toString.call( propList ) !== '[object Array]' ) {
    propList = propList.replace(/^\./, '').replace(/\.$/, '').split('.');
  }

  propList.forEach(function walkThroughObj ( propName ) {
    obj = obj[ propName ] ? obj[ propName ] : obj;
  });

  return obj;
}

sort-international.js

function international ( propList ) {
  var alphabet = '._!*@()[]{}#^&%-=+01234567989aāáǎàâãąbcćčçdďðeēéěèêëęfgğhıiīíǐìîïjklłmnńňñoōóǒòôpqrřsśšştťuūúǔùůûüǖǘǚǜvwxyýzźżžþæœøõåäö'
    , firstA
    , firstB;

  return function(a, b) {
    if ( propList ) {
      a = groperty(a, propList);
      b = groperty(b, propList);
    }

    a = a.toLowerCase();
    b = b.toLowerCase();

    firstA = alphabet.indexOf(a[0]);
    firstB = alphabet.indexOf(b[0]);

    return firstA === firstB ? a === b ? 0 : a < b ? -1 : 1 : firstA - firstB;
  }
}