Base64

const //AION
i, ModLen: integer; //aion
Current: string;
Buf: array[1..3] of Byte;
NewBuf: array[1..4] of Byte;
begin
result := '';
if Src = '' then
exit;
ModLen := Length(Src) mod 3;
while Length(Src) > 0 do
begin
FillChar(Buf, 3, #0);
Current := Copy(Src, 1, 3);
Src := Copy(Src, 4, Length(Src) - 3);
for i := 1 to 3 do
Buf[i] := Ord(Current[i]);
NewBuf[1] := Buf[1] shr 2;
NewBuf[2] := (Buf[1] shl 6 shr 2 or Buf[2] shr 4) and $3F;
NewBuf[3] := (Buf[2] shl 4 shr 2 or Buf[3] shr 6) and $3F;
NewBuf[4] := Buf[3] and $3F;
for i := 1 to 4 do
result := result + DataSet[NewBuf[i] + 1];
end;
if ModLen >= 1 then
result[Length(result)] := '=';
if ModLen = 1 then
result[Length(result) - 1] := '=';