protected byte[] doDecoding(byte[] bytes) throws DecoderException {
if (bytes == null) {
return null;
}
boolean hasUnderscores = false;
for (byte b : bytes) {
if (b == 95) {
hasUnderscores = true;
break;
}
}
if (hasUnderscores) {
byte[] tmp = new byte[bytes.length];
for (int i = 0; i < bytes.length; i++) {
byte b = bytes[i];
if (b != 95) {
tmp[i] = b;
} else {
tmp[i] = 32;
}
}
return QuotedPrintableCodec.decodeQuotedPrintable(tmp);
}
return QuotedPrintableCodec.decodeQuotedPrintable(bytes);
}
protected byte[] doEncoding(byte[] bytes) {
if (bytes == null) {
return null;
}
byte[] data = QuotedPrintableCodec.encodeQuotedPrintable(PRINTABLE_CHARS, bytes);
if (this.encodeBlanks) {
for (int i = 0; i < data.length; i++) {
if (data[i] == 32) {
data[i] = 95;
}
}
}
return data;
}