/**

*

*  Javascript sprintf

*  http://www.webtoolkit.info/

*

*

**/



sprintfWrapper = {



	init : function () {



		if (typeof arguments == "undefined") { return null; }

		if (arguments.length < 1) { return null; }

		if (typeof arguments[0] != "string") { return null; }

		if (typeof RegExp == "undefined") { return null; }



		var string = arguments[0];

		var exp = new RegExp(/(%([%]|(\-)?(\+|\x20)?(0)?(\d+)?(\.(\d)?)?([bcdfosxX])))/g);

		var matches = new Array();

		var strings = new Array();

		var convCount = 0;

		var stringPosStart = 0;

		var stringPosEnd = 0;

		var matchPosEnd = 0;

		var newString = '';

		var match = null;



		while (match = exp.exec(string)) {

			if (match[9]) { convCount += 1; }



			stringPosStart = matchPosEnd;

			stringPosEnd = exp.lastIndex - match[0].length;

			strings[strings.length] = string.substring(stringPosStart, stringPosEnd);



			matchPosEnd = exp.lastIndex;

			matches[matches.length] = {

				match: match[0],

				left: match[3] ? true : false,

				sign: match[4] || '',

				pad: match[5] || ' ',

				min: match[6] || 0,

				precision: match[8],

				code: match[9] || '%',

				negative: parseInt(arguments[convCount]) < 0 ? true : false,

				argument: String(arguments[convCount])

			};

		}

		strings[strings.length] = string.substring(matchPosEnd);



		if (matches.length == 0) { return string; }

		if ((arguments.length - 1) < convCount) { return null; }



		var code = null;

		var match = null;

		var i = null;



		for (i=0; i<matches.length; i++) {



			if (matches[i].code == '%') { substitution = '%' }

			else if (matches[i].code == 'b') {

				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(2));

				substitution = sprintfWrapper.convert(matches[i], true);

			}

			else if (matches[i].code == 'c') {

				matches[i].argument = String(String.fromCharCode(parseInt(Math.abs(parseInt(matches[i].argument)))));

				substitution = sprintfWrapper.convert(matches[i], true);

			}

			else if (matches[i].code == 'd') {

				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)));

				substitution = sprintfWrapper.convert(matches[i]);

			}

			else if (matches[i].code == 'f') {

				matches[i].argument = String(Math.abs(parseFloat(matches[i].argument)).toFixed(matches[i].precision ? matches[i].precision : 6));

				substitution = sprintfWrapper.convert(matches[i]);

			}

			else if (matches[i].code == 'o') {

				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(8));

				substitution = sprintfWrapper.convert(matches[i]);

			}

			else if (matches[i].code == 's') {

				matches[i].argument = matches[i].argument.substring(0, matches[i].precision ? matches[i].precision : matches[i].argument.length)

				substitution = sprintfWrapper.convert(matches[i], true);

			}

			else if (matches[i].code == 'x') {

				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));

				substitution = sprintfWrapper.convert(matches[i]);

			}

			else if (matches[i].code == 'X') {

				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));

				substitution = sprintfWrapper.convert(matches[i]).toUpperCase();

			}

			else {

				substitution = matches[i].match;

			}



			newString += strings[i];

			newString += substitution;



		}

		newString += strings[i];



		return newString;



	},



	convert : function(match, nosign){

		if (nosign) {

			match.sign = '';

		} else {

			match.sign = match.negative ? '-' : match.sign;

		}

		var l = match.min - match.argument.length + 1 - match.sign.length;

		var pad = new Array(l < 0 ? 0 : l).join(match.pad);

		if (!match.left) {

			if (match.pad == "0" || nosign) {

				return match.sign + pad + match.argument;

			} else {

				return pad + match.sign + match.argument;

			}

		} else {

			if (match.pad == "0" || nosign) {

				return match.sign + match.argument + pad.replace(/0/g, ' ');

			} else {

				return match.sign + match.argument + pad;

			}

		}

	}

}



sprintf = sprintfWrapper.init;