Blog of Denis Borisenko

public static function utf8Encode(string:String):String
{
	string = string.replace(/\r\n/g,'\n');
	string = string.replace(/\r/g,'\n');
 
	var utfString:String = '';
 
	for (var i:int = 0 ; i < string.length ; i++)
	{
		var chr:Number = string.charCodeAt(i);
		if (chr < 128)
		{
			utfString += String.fromCharCode(chr);
		}
		else if ((chr > 127) && (chr < 2048))
		{
			utfString += String.fromCharCode((chr >> 6) | 192);
			utfString += String.fromCharCode((chr & 63) | 128);
		}
		else
		{
			utfString += String.fromCharCode((chr >> 12) | 224);
			utfString += String.fromCharCode(((chr >> 6) & 63) | 128);
			utfString += String.fromCharCode((chr & 63) | 128);
		}
	}
 
	return utfString;
}
public static function urlEncode(string:String):String
{
	var urlString:String = '';
 
	for (var i:int = 0 ; i < string.length ; i++)
	{
		var chr:Number = string.charCodeAt(i);
 
		if ((chr >= 48 && chr <= 57) || // 09
			(chr >= 65 && chr <= 90) || // AZ
			(chr >= 97 && chr <= 122) || // az
			chr == 45 || // -
			chr == 95 || // _
			chr == 46 || // .
			chr == 126) // ~
		{
			urlString += String.fromCharCode(chr);
		}
		else
		{
			urlString += '%' + chr.toString(16).toUpperCase();
		}
	}
 
	return urlString;
}
 
public static function encode(string:String):String
{
	return urlEncode(utf8Encode(string));
}