angular.module('app')
    .factory('Utilities', function() {
        return {
            toUtf8: function(str) {
                var out, i, len, c;
                out = "";
                len = str.length;
                for (i = 0; i < len; i++) {
                    c = str.charCodeAt(i);
                    if ((c >= 0x0001) && (c <= 0x007F)) {
                        out += str.charAt(i);
                    } else if (c > 0x07FF) {
                        out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
                        out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
                        out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
                    } else {
                        out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
                        out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
                    }
                }
                return out;
            }
        }
    });