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/**
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* Sorts a column containing Farsi numbers. Farsi numbers can easily be
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* mapped 1:1 to latin numbers - ۱ = 1, ۲ = 2, ۱۲ = 12 and so on.
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*
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*
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* @name Farsi numbers
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* @summary Sorts columns containing UTF8 Farsi numbers
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* @author [Behrooz Janfada](behrooz dot janfada at gmail com)
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*
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* @example
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* $('#example').DataTable( {
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* columnDefs: [
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* { type: 'farsi-numbers', targets: 0 }
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* ]
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* } );
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*/
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jQuery.extend( jQuery.fn.dataTableExt.oSort, {
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"farsi-numbers-pre" : function(a) {
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function farsiToLatin(farsi) {
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switch(farsi) {
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case "۰": return 0; break;
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case "۱": return 1; break;
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case "۲": return 2; break;
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case "۳": return 3; break;
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case "۴": return 4; break;
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case "۵": return 5; break;
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case "۶": return 6; break;
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case "۷": return 7; break;
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case "۸": return 8; break;
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case "۹": return 9; break;
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default : return 0; break;
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}
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}
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var latin = '', i = 0;
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for (i; i<a.length; i++) {
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latin += farsiToLatin(a.charAt(i))
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}
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return parseInt(latin)
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},
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"farsi-numbers-asc": function(a, b) {
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return ((a < b) ? -1 : ((a > b) ? 1 : 0))
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},
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"farsi-numbers-desc": function(a, b) {
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return ((a < b) ? 1 : ((a > b) ? -1 : 0))
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}
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} );
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