js-natural-sort
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Natural Sort algorithm for Javascript (supports AMD / Browserify & CommonJS)
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JavaScript
(function() {
/*
* Natural Sort algorithm for Javascript - Version 0.7 - Released under MIT license
* Author: Jim Palmer (based on chunking idea from Dave Koelle)
*/
var naturalSort = function(a, b) {
var re = /(^-?[0-9]+(\.?[0-9]*)[df]?e?[0-9]?$|^0x[0-9a-f]+$|[0-9]+)/gi;
var sre = /(^[ ]*|[ ]*$)/g;
var dre = /(^([\w ]+,?[\w ]+)?[\w ]+,?[\w ]+\d+:\d+(:\d+)?[\w ]?|^\d{1,4}[\/\-]\d{1,4}[\/\-]\d{1,4}|^\w+, \w+ \d+, \d{4})/;
var hre = /^0x[0-9a-f]+$/i;
var ore = /^0/;
var i = function(s) {
return naturalSort.insensitive && ('' + s).toLowerCase() || '' + s;
};
// convert all to strings strip whitespace
var x = i(a).replace(sre, '') || '';
var y = i(b).replace(sre, '') || '';
// chunk/tokenize
var xN = x.replace(re, '\0$1\0').replace(/\0$/,'').replace(/^\0/,'').split('\0');
var yN = y.replace(re, '\0$1\0').replace(/\0$/,'').replace(/^\0/,'').split('\0');
// numeric, hex or date detection
var xD = parseInt(x.match(hre)) || (xN.length != 1 && x.match(dre) && Date.parse(x));
var yD = parseInt(y.match(hre)) || xD && y.match(dre) && Date.parse(y) || null;
var oFxNcL;
var oFyNcL;
// first try and sort Hex codes or Dates
if (yD) {
if (xD < yD) {
return -1;
} else if (xD > yD) {
return 1;
}
}
// natural sorting through split numeric strings and default strings
for (var cLoc = 0, numS = Math.max(xN.length, yN.length); cLoc < numS; cLoc++) {
// find floats not starting with '0', string or 0 if not defined (Clint Priest)
oFxNcL = !(xN[cLoc] || '').match(ore) && parseFloat(xN[cLoc]) || xN[cLoc] || 0;
oFyNcL = !(yN[cLoc] || '').match(ore) && parseFloat(yN[cLoc]) || yN[cLoc] || 0;
// handle numeric vs string comparison - number < string - (Kyle Adams)
if (isNaN(oFxNcL) !== isNaN(oFyNcL)) {
return (isNaN(oFxNcL)) ? 1 : -1;
} else if (typeof oFxNcL !== typeof oFyNcL) {
// rely on string comparison if different types - i.e. '02' < 2 != '02' < '2'
oFxNcL += '';
oFyNcL += '';
}
if (oFxNcL < oFyNcL) {
return -1;
}
if (oFxNcL > oFyNcL) {
return 1;
}
}
return 0;
};
// Expose naturalSort to the world
if (typeof define === 'function' && define.amd) {
// AMD
window.naturalSort = naturalSort;
define('raven', [], function() {
return naturalSort;
});
} else if (typeof module === 'object') {
// browserify
module.exports = naturalSort;
} else if (typeof exports === 'object') {
// CommonJS
exports = naturalSort;
} else {
// Everything else
window.naturalSort = naturalSort;
}
})();