recently, i needed to encode/decode similar data, and base64 with a variable 64 chars seemed to work just as good. say, - or / are problem chars, then make anot

recently, i needed to encode/decode similar data, and base64 with a variable 64 chars seemed to work just as good. say, - or / are problem chars, then make another set of 64 chars which would have a comma and a dot or alike and there you go. keep the sets in a table or somehting and use the first 2 chars as indicator which set of 64 to use for that data.