protected CoderResult encodeLoop(CharBuffer src, ByteBuffer dst) {
int mark = src.position();
if (needsMark) {
if (dst.remaining() < 2) return CoderResult.OVERFLOW;
put(BYTE_ORDER_MARK, dst);
needsMark = false;
}
try {
while (src.hasRemaining()) {
char c = src.get();
if (!Surrogate.is(c)) {
if (dst.remaining() < 2) return CoderResult.OVERFLOW;
mark++;
put(c, dst);
continue;
}
int d = sgp.parse(c, src);
if (d < 0) return sgp.error();
if (dst.remaining() < 4) return CoderResult.OVERFLOW;
mark += 2;
put(Surrogate.high(d), dst);
put(Surrogate.low(d), dst);
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
public boolean canEncode(char c) {
return !Surrogate.is(c);
}