////////////////////////////////////////////////////////////
//
//  class CPsText
//
//  basic text/string support
//
//  this is a class which only has STATIC methods
//



var CPsText =
{

    ////////////////////////////////////////////////////////////
    //
    //  sprintf
    //  hacked up from the version at http://www.webtoolkit.info/
    //

    sprintf:        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 = CPsText._sprintf_convert(matches[i], true);
			    }
			    else if (matches[i].code == 'c') {
				matches[i].argument = String(String.fromCharCode(parseInt(Math.abs(parseInt(matches[i].argument)))));
				substitution = CPsText._sprintf_convert(matches[i], true);
			    }
			    else if (matches[i].code == 'd') {
				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)));
				substitution = CPsText._sprintf_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 = CPsText._sprintf_convert(matches[i]);
			    }
			    else if (matches[i].code == 'o') {
				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(8));
				substitution = CPsText._sprintf_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 = CPsText._sprintf_convert(matches[i], true);
			    }
			    else if (matches[i].code == 'x') {
				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));
				substitution = CPsText._sprintf_convert(matches[i]);
			    }
			    else if (matches[i].code == 'X') {
				matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));
				substitution = CPsText._sprintf_convert(matches[i]).toUpperCase();
			    }
			    else {
				substitution = matches[i].match;
			    }

			    newString += strings[i];
			    newString += substitution;

			}
			newString += strings[i];

			return newString;
		    },


    ////////////////////////////////////////////////////////////
    //
    //  _sprintf_convert(match, nosign)
    //
    //  support routine for sprintf
    //

    _sprintf_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;
				}
			    }
			}

};