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@@ -0,0 +1,69 @@
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+let _ = require('underscore');
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+
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+_.mixin({
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+
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+ sortByNat: function (obj, value, context) {
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+ var iterator = _.isFunction(value) ? value : function (obj) {
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+ return obj[value];
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+ };
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+ return _.pluck(_.map(obj, function (value, index, list) {
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+ return {
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+ value: value,
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+ index: index,
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+ criteria: iterator.call(context, value, index, list)
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+ };
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+ }).sort(function (left, right) {
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+ var a = left.criteria;
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+ var b = right.criteria;
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+ return naturalSort(a, b);
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+ }), 'value');
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+ }
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+});
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+
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+function naturalSort(a, b) {
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+ var re = /(^-?[0-9]+(\.?[0-9]*)[df]?e?[0-9]?$|^0x[0-9a-f]+$|[0-9]+)/gi,
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+ sre = /(^[ ]*|[ ]*$)/g,
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+ dre = /(^([\w ]+,?[\w ]+)?[\w ]+,?[\w ]+\d+:\d+(:\d+)?[\w ]?|^\d{1,4}[\/\-]\d{1,4}[\/\-]\d{1,4}|^\w+, \w+ \d+, \d{4})/,
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+ hre = /^0x[0-9a-f]+$/i,
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+ ore = /^0/,
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+ i = function (s) {
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+ return naturalSort.insensitive && ('' + s).toLowerCase() || '' + s
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+ },
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+ // convert all to strings strip whitespace
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+ x = i(a).replace(sre, '') || '',
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+ y = i(b).replace(sre, '') || '',
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+ // chunk/tokenize
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+ xN = x.replace(re, '\0$1\0').replace(/\0$/, '').replace(/^\0/, '').split('\0'),
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+ yN = y.replace(re, '\0$1\0').replace(/\0$/, '').replace(/^\0/, '').split('\0'),
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+ // numeric, hex or date detection
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+ xD = parseInt(x.match(hre)) || (xN.length != 1 && x.match(dre) && Date.parse(x)),
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+ yD = parseInt(y.match(hre)) || xD && y.match(dre) && Date.parse(y) || null,
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+ oFxNcL, oFyNcL;
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+ // first try and sort Hex codes or Dates
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+ if (yD)
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+ if (xD < yD) return -1;
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+ else if (xD > yD) return 1;
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+ // natural sorting through split numeric strings and default strings
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+ for (var cLoc = 0, numS = Math.max(xN.length, yN.length); cLoc < numS; cLoc++) {
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+ // find floats not starting with '0', string or 0 if not defined (Clint Priest)
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+ oFxNcL = !(xN[cLoc] || '').match(ore) && parseFloat(xN[cLoc]) || xN[cLoc] || 0;
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+ oFyNcL = !(yN[cLoc] || '').match(ore) && parseFloat(yN[cLoc]) || yN[cLoc] || 0;
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+ // handle numeric vs string comparison - number < string - (Kyle Adams)
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+ if (isNaN(oFxNcL) !== isNaN(oFyNcL)) {
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+ return (isNaN(oFxNcL)) ? 1 : -1;
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+ }
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+ // rely on string comparison if different types - i.e. '02' < 2 != '02' < '2'
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+ else if (typeof oFxNcL !== typeof oFyNcL) {
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+ oFxNcL += '';
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+ oFyNcL += '';
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+ }
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+ if (oFxNcL < oFyNcL) return -1;
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+ if (oFxNcL > oFyNcL) return 1;
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+ }
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+ return 0;
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+}
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+
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+// extend Array to have a natural sort
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+Array.prototype.sortNat = function () {
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+ return Array.prototype.sort.call(this, naturalSort)
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+};
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