https://www.paideia.es/wp-content/plugins/data-tables-generator-by…/Core/assets/js/lib/natural.js?ver=1.10.11

1/**
2 * Data can often be a complicated mix of numbers and letters (file names
3 * are a common example) and sorting them in a natural manner is quite a
4 * difficult problem.
5 * 
6 * Fortunately a deal of work has already been done in this area by other
7 * authors - the following plug-in uses the [naturalSort() function by Jim
8 * Palmer](http://www.overset.com/2008/09/01/javascript-natural-sort-algorithm-with-unicode-support) to provide natural sorting in DataTables.
9 *
10 *  @name Natural sorting
11 *  @summary Sort data with a mix of numbers and letters _naturally_.
12 *  @author [Jim Palmer](http://www.overset.com/2008/09/01/javascript-natural-sort-algorithm-with-unicode-support)
13 *  @author [Michael Buehler] (https://github.com/AnimusMachina)
14 *
15 *  @example
16 *    $('#example').dataTable( {
17 *       columnDefs: [
18 *         { type: 'natural', targets: 0 }
19 *       ]
20 *    } );
21 *
22 *    Html can be stripped from sorting by using 'natural-nohtml' such as
23 *
24 *    $('#example').dataTable( {
25 *       columnDefs: [
26 *    	   { type: 'natural-nohtml', targets: 0 }
27 *       ]
28 *    } );
29 *
30 */
31
32(function() {
33
34/*
35 * Natural Sort algorithm for Javascript - Version 0.7 - Released under MIT license
36 * Author: Jim Palmer (based on chunking idea from Dave Koelle)
37 * Contributors: Mike Grier (mgrier.com), Clint Priest, Kyle Adams, guillermo
38 * See: http://js-naturalsort.googlecode.com/svn/trunk/naturalSort.js
39 */
40function naturalSort (a, b, html) {
41	var re = /(^-?[0-9]+(\.?[0-9]*)[df]?e?[0-9]?$|^0x[0-9a-f]+$|[0-9]+)/gi,
42		sre = /(^[ ]*|[ ]*$)/g,
43		dre = /(^([\w ]+,?[\w ]+)?[\w ]+,?[\w ]+\d+:\d+(:\d+)?[\w ]?|^\d{1,4}[\/\-]\d{1,4}[\/\-]\d{1,4}|^\w+, \w+ \d+, \d{4})/,
44		hre = /^0x[0-9a-f]+$/i,
45		ore = /^0/,
46		htmre = /(<([^>]+)>)/ig,
47		// convert all to strings and trim()
48		x = a.toString().replace(sre, '') || '',
49		y = b.toString().replace(sre, '') || '';
50		// remove html from strings if desired
51		if (!html) {
52			x = x.replace(htmre, '');
53			y = y.replace(htmre, '');
54		}
55		// chunk/tokenize
56	var	xN = x.replace(re, '\0$1\0').replace(/\0$/,'').replace(/^\0/,'').split('\0'),
57		yN = y.replace(re, '\0$1\0').replace(/\0$/,'').replace(/^\0/,'').split('\0'),
58		// numeric, hex or date detection
59		xD = parseInt(x.match(hre), 10) || (xN.length !== 1 && x.match(dre) && Date.parse(x)),
60		yD = parseInt(y.match(hre), 10) || xD && y.match(dre) && Date.parse(y) || null;
61
62	// first try and sort Hex codes or Dates
63	if (yD) {
64		if ( xD < yD ) {
65			return -1;
66		}
67		else if ( xD > yD )	{
68			return 1;
69		}
70	}
71
72	// natural sorting through split numeric strings and default strings
73	for(var cLoc=0, numS=Math.max(xN.length, yN.length); cLoc < numS; cLoc++) {
74		// find floats not starting with '0', string or 0 if not defined (Clint Priest)
75		var oFxNcL = !(xN[cLoc] || '').match(ore) && parseFloat(xN[cLoc], 10) || xN[cLoc] || 0;
76		var oFyNcL = !(yN[cLoc] || '').match(ore) && parseFloat(yN[cLoc], 10) || yN[cLoc] || 0;
77		// handle numeric vs string comparison - number < string - (Kyle Adams)
78		if (isNaN(oFxNcL) !== isNaN(oFyNcL)) {
79			return (isNaN(oFxNcL)) ? 1 : -1;
80		}
81		// rely on string comparison if different types - i.e. '02' < 2 != '02' < '2'
82		else if (typeof oFxNcL !== typeof oFyNcL) {
83			oFxNcL += '';
84			oFyNcL += '';
85		}
86		if (oFxNcL < oFyNcL) {
87			return -1;
88		}
89		if (oFxNcL > oFyNcL) {
90			return 1;
91		}
92	}
93	return 0;
94}
95
96jQuery.extend( jQuery.fn.dataTableExt.oSort, {
97	"natural-asc": function ( a, b ) {
98		return naturalSort(a,b,true);
99	},
100
101	"natural-desc": function ( a, b ) {
102		return naturalSort(a,b,true) * -1;
103	},
104
105	"natural-nohtml-asc": function( a, b ) {
106		return naturalSort(a,b,false);
107	},
108
109	"natural-nohtml-desc": function( a, b ) {
110		return naturalSort(a,b,false) * -1;
111	}
112} );
113
114}());