The Annoyance Filter.pdf - Fourmilab

§55 ANNOYANCE-FILTER BASE64 MIME DECODER 53
55. Since we rely on the parent class default implementation of getNextEncodedLine , if we wish to
permit intermixed calls on getNextEncodedLine and getNextEncodedChar we must cope with the fact
that the last getNextEncodedLine call may have peeked ahead one character. If so, clear the look ahead
flag and return the look ahead character.
〈 Check for look ahead character 55 〉 ≡
if (lookAhead ) {
lookAhead = false ;
return lookChar ;
}
This code is used in sections 49 and 59.