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Plugins/sorting/natural.mjs

123 lines
4.5 KiB
JavaScript

/*! © SpryMedia Ltd, Jim Palmer, Michael Buehler, Mike Grier, Clint Priest, Kyle Adams, guillermo - datatables.net/license */
import $ from 'jquery';
import DataTable from 'datatables.net';
/**
* Data can often be a complicated mix of numbers and letters (file names
* are a common example) and sorting them in a natural manner is quite a
* difficult problem.
*
* Fortunately a deal of work has already been done in this area by other
* authors - the following plug-in uses the [naturalSort() function by Jim
* Palmer](http://www.overset.com/2008/09/01/javascript-natural-sort-algorithm-with-unicode-support) to provide natural sorting in DataTables.
*
* @name Natural sorting
* @summary Sort data with a mix of numbers and letters _naturally_.
* @author [Jim Palmer](http://www.overset.com/2008/09/01/javascript-natural-sort-algorithm-with-unicode-support)
* @author [Michael Buehler] (https://github.com/AnimusMachina)
*
* @example
* $('#example').dataTable( {
* columnDefs: [
* { type: 'natural', targets: 0 }
* ]
* } );
*
* Html can be stripped from sorting by using 'natural-nohtml' such as
*
* $('#example').dataTable( {
* columnDefs: [
* { type: 'natural-nohtml', targets: 0 }
* ]
* } );
*
*/
/*
* Natural Sort algorithm for Javascript - Version 0.7 - Released under MIT license
* Author: Jim Palmer (based on chunking idea from Dave Koelle)
* Contributors: Mike Grier (mgrier.com), Clint Priest, Kyle Adams, guillermo
* See: http://js-naturalsort.googlecode.com/svn/trunk/naturalSort.js
*/
function naturalSort(a, b, html) {
var re = /(^-?[0-9]+(\.?[0-9]*)[df]?e?[0-9]?%?$|^0x[0-9a-f]+$|[0-9]+)/gi, sre = /(^[ ]*|[ ]*$)/g, dre = /(^([\w ]+,?[\w ]+)?[\w ]+,?[\w ]+\d+:\d+(:\d+)?[\w ]?|^\d{1,4}[\/\-]\d{1,4}[\/\-]\d{1,4}|^\w+, \w+ \d+, \d{4})/, hre = /^0x[0-9a-f]+$/i, ore = /^0/, htmre = /(<([^>]+)>)/gi,
// convert all to strings and trim()
x = a.toString().replace(sre, '') || '', y = b.toString().replace(sre, '') || '';
// remove html from strings if desired
if (!html) {
x = x.replace(htmre, '');
y = y.replace(htmre, '');
}
// chunk/tokenize
var xN = x
.replace(re, '\0$1\0')
.replace(/\0$/, '')
.replace(/^\0/, '')
.split('\0'), yN = y
.replace(re, '\0$1\0')
.replace(/\0$/, '')
.replace(/^\0/, '')
.split('\0'),
// numeric, hex or date detection
xD = parseInt(x.match(hre), 10) ||
(xN.length !== 1 && x.match(dre) && Date.parse(x)), yD = parseInt(y.match(hre), 10) ||
(xD && y.match(dre) && Date.parse(y)) ||
null;
// 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)
var oFxNcL = (!(xN[cLoc] || '').match(ore) && parseFloat(xN[cLoc])) || xN[cLoc] || 0;
var 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;
}
// rely on string comparison if different types - i.e. '02' < 2 != '02' < '2'
else if (typeof oFxNcL !== typeof oFyNcL) {
oFxNcL += '';
oFyNcL += '';
}
if (oFxNcL < oFyNcL) {
return -1;
}
if (oFxNcL > oFyNcL) {
return 1;
}
}
return 0;
}
DataTable.ext.order['natural-asc'] = function (a, b) {
return naturalSort(a, b, true);
};
DataTable.ext.order['natural-desc'] = function (a, b) {
return naturalSort(a, b, true) * -1;
};
DataTable.ext.order['natural-nohtml-asc'] = function (a, b) {
return naturalSort(a, b, false);
};
DataTable.ext.order['natural-nohtml-asc'] = function (a, b) {
return naturalSort(a, b, false) * -1;
};
DataTable.ext.order['natural-ci-asc'] = function (a, b) {
a = a.toString().toLowerCase();
b = b.toString().toLowerCase();
return naturalSort(a, b, true);
};
DataTable.ext.order['natural-ci-asc'] = function (a, b) {
a = a.toString().toLowerCase();
b = b.toString().toLowerCase();
return naturalSort(a, b, true) * -1;
};
export default DataTable;