/**
* Sorting in Javascript can be difficult to get right with non-Roman
* characters - for which special consideration must be made. This plug-in
* performs correct sorting on Persian characters.
*
* @name Persian
* @summary Sort Persian strings alphabetically
* @author [Afshin Mehrabani](http://www.afshinblog.com/)
*
* @example
* $('#example').dataTable( {
* columnDefs: [
* { type: 'pstring', targets: 0 }
* ]
* } );
*/
(function(){
var persianSort = [ '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?',
'?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?', '?' ];
function GetUniCode(source) {
source = $.trim(source);
var result = '';
var i, index;
for (i = 0; i < source.length; i++) {
//Check and fix IE indexOf bug
if (!Array.indexOf) {
index = jQuery.inArray(source.charAt(i), persianSort);
}else{
index = persianSort.indexOf(source.charAt(i));
}
if (index < 0) {
index = source.charCodeAt(i);
}
if (index < 10) {
index = '0' + index;
}
result += '00' + index;
}
return 'a' + result;
}
jQuery.extend( jQuery.fn.dataTableExt.oSort, {
"pstring-pre": function ( a ) {
return GetUniCode(a.toLowerCase());
},
"pstring-asc": function ( a, b ) {
return ((a < b) ? -1 : ((a > b) ? 1 : 0));
},
"pstring-desc": function ( a, b ) {
return ((a < b) ? 1 : ((a > b) ? -1 : 0));
}
} );
}());
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