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42 lines
2.1 KiB
42 lines
2.1 KiB
/* |
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* Natural Sort algorithm for Javascript - Version 0.7 - Released under MIT license |
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* Author: Jim Palmer (based on chunking idea from Dave Koelle) |
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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) { return naturalSort.insensitive && (''+s).toLowerCase() || ''+s }, |
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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)) { return (isNaN(oFxNcL)) ? 1 : -1; } |
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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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