@atlassian/aui/lib/js/aui/alphanum.js

Atlassian User Interface Framework

(function (global, factory) {
    if (typeof define === "function" && define.amd) {
        define(['module', 'exports', './internal/globalize'], factory);
    } else if (typeof exports !== "undefined") {
        factory(module, exports, require('./internal/globalize'));
    } else {
        var mod = {
            exports: {}
        };
        factory(mod, mod.exports, global.globalize);
        global.alphanum = mod.exports;
    }
})(this, function (module, exports, _globalize) {
    'use strict';

    Object.defineProperty(exports, "__esModule", {
        value: true
    });

    var _globalize2 = _interopRequireDefault(_globalize);

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

    /**
     * Compare two strings in alphanumeric way
     * @method alphanum
     * @param {String} a first string to compare
     * @param {String} b second string to compare
     * @return {Number(-1|0|1)} -1 if a < b, 0 if a = b, 1 if a > b
     */
    function alphanum(a, b) {
        a = (a + '').toLowerCase();
        b = (b + '').toLowerCase();

        var chunks = /(\d+|\D+)/g;
        var am = a.match(chunks);
        var bm = b.match(chunks);
        var len = Math.max(am.length, bm.length);

        for (var i = 0; i < len; i++) {
            if (i === am.length) {
                return -1;
            }

            if (i === bm.length) {
                return 1;
            }

            var ad = parseInt(am[i], 10) + '';
            var bd = parseInt(bm[i], 10) + '';

            if (ad === am[i] && bd === bm[i] && ad !== bd) {
                return (ad - bd) / Math.abs(ad - bd);
            }

            if ((ad !== am[i] || bd !== bm[i]) && am[i] !== bm[i]) {
                return am[i] < bm[i] ? -1 : 1;
            }
        }

        return 0;
    }

    (0, _globalize2.default)('alphanum', alphanum);

    exports.default = alphanum;
    module.exports = exports['default'];
});
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