/**
 * sprintf and vsprintf for jQuery
 * somewhat based on http://jan.moesen.nu/code/javascript/sprintf-and-printf-in-javascript/
 * 
 * Copyright (c) 2008 Sabin Iacob (m0n5t3r) <iacobs@m0n5t3r.info>
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details. 
 *
 * @license http://www.gnu.org/licenses/gpl.html 
 * @project jquery.sprintf
 */
(function($){
    var formats = {
        '%': function(val) {return '%';},
        'b': function(val) {return  parseInt(val, 10).toString(2);},
        'c': function(val) {return  String.fromCharCode(parseInt(val, 10));},
        'd': function(val) {return  parseInt(val, 10) ? parseInt(val, 10) : 0;},
        'u': function(val) {return  Math.abs(val);},
        'f': function(val, p) {return  (p > -1) ? Math.round(parseFloat(val) * Math.pow(10, p)) / Math.pow(10, p): parseFloat(val);},
        'o': function(val) {return  parseInt(val, 10).toString(8);},
        's': function(val) {return  val;},
        'x': function(val) {return  ('' + parseInt(val, 10).toString(16)).toLowerCase();},
        'X': function(val) {return  ('' + parseInt(val, 10).toString(16)).toUpperCase();}
    };

    var re = /%(?:(\d+)?(?:\.(\d+))?|\(([^)]+)\))([%bcdufosxX])/g;

    var dispatch = function(data){
        if(data.length == 1 && typeof data[0] == 'object') { //python-style printf
            data = data[0];
            return function(match, w, p, lbl, fmt, off, str) {
                return formats[fmt](data[lbl]);
            };
        } else { // regular, somewhat incomplete, printf
            var idx = 0; // oh, the beauty of closures :D
            return function(match, w, p, lbl, fmt, off, str) {
                return formats[fmt](data[idx++], p);
            };
        }
    };

    $.extend({
        sprintf: function(format) {
            var argv = Array.apply(null, arguments).slice(1);
            return format.replace(re, dispatch(argv));
        },
        vsprintf: function(format, data) {
            return format.replace(re, dispatch(data));
        }
    });
})(jQuery);