protected CoderResult decodeLoop(ByteBuffer bb, CharBuffer cb) {
int cbRemaining = cb.remaining();
if (CharsetProviderImpl.hasLoadedNatives()
&& bb.isDirect()
&& bb.hasRemaining()
&& cb.hasArray()) {
int toProceed = bb.remaining();
int cbPos = cb.position();
int bbPos = bb.position();
boolean throwOverflow = false;
if (cbRemaining < toProceed) {
toProceed = cbRemaining;
throwOverflow = true;
}
int res =
nDecode(
cb.array(),
cb.arrayOffset() + cbPos,
toProceed,
AddressUtil.getDirectBufferAddress(bb),
bbPos);
bb.position(bbPos + res);
cb.position(cbPos + res);
if (throwOverflow) return CoderResult.OVERFLOW;
} else {
if (bb.hasArray() && cb.hasArray()) {
int rem = bb.remaining();
rem = cbRemaining >= rem ? rem : cbRemaining;
byte[] bArr = bb.array();
char[] cArr = cb.array();
int bStart = bb.position();
int cStart = cb.position();
int i;
for (i = bStart; i < bStart + rem; i++) {
char in = (char) (bArr[i] & 0xFF);
if (in >= 4) {
int index = (int) in - 4;
cArr[cStart++] = (char) arr[index];
} else {
cArr[cStart++] = (char) (in & 0xFF);
}
}
bb.position(i);
cb.position(cStart);
if (rem == cbRemaining && bb.hasRemaining()) return CoderResult.OVERFLOW;
} else {
while (bb.hasRemaining()) {
if (cbRemaining == 0) return CoderResult.OVERFLOW;
char in = (char) (bb.get() & 0xFF);
if (in >= 4) {
int index = (int) in - 4;
cb.put(arr[index]);
} else {
cb.put((char) (in & 0xFF));
}
cbRemaining--;
}
}
}
return CoderResult.UNDERFLOW;
}
protected CoderResult encodeLoop(CharBuffer cb, ByteBuffer bb) {
int bbRemaining = bb.remaining();
if (CharsetProviderImpl.hasLoadedNatives()
&& bb.isDirect()
&& cb.hasRemaining()
&& cb.hasArray()) {
int toProceed = cb.remaining();
int cbPos = cb.position();
int bbPos = bb.position();
boolean throwOverflow = false;
if (bbRemaining < toProceed) {
toProceed = bbRemaining;
throwOverflow = true;
}
int[] res = {toProceed, 0};
nEncode(
AddressUtil.getDirectBufferAddress(bb),
bbPos,
cb.array(),
cb.arrayOffset() + cbPos,
res);
if (res[0] <= 0) {
bb.position(bbPos - res[0]);
cb.position(cbPos - res[0]);
if (res[1] != 0) {
if (res[1] < 0) return CoderResult.malformedForLength(-res[1]);
else return CoderResult.unmappableForLength(res[1]);
}
} else {
bb.position(bbPos + res[0]);
cb.position(cbPos + res[0]);
if (throwOverflow) return CoderResult.OVERFLOW;
}
} else {
if (bb.hasArray() && cb.hasArray()) {
byte[] byteArr = bb.array();
char[] charArr = cb.array();
int rem = cb.remaining();
int byteArrStart = bb.position();
rem = bbRemaining <= rem ? bbRemaining : rem;
int x;
for (x = cb.position(); x < cb.position() + rem; x++) {
char c = charArr[x];
if (c > (char) 0x20AC) {
if (c >= 0xD800 && c <= 0xDFFF) {
if (x + 1 < cb.limit()) {
char c1 = charArr[x + 1];
if (c1 >= 0xD800 && c1 <= 0xDFFF) {
cb.position(x);
bb.position(byteArrStart);
return CoderResult.unmappableForLength(2);
}
} else {
cb.position(x);
bb.position(byteArrStart);
return CoderResult.UNDERFLOW;
}
cb.position(x);
bb.position(byteArrStart);
return CoderResult.malformedForLength(1);
}
cb.position(x);
bb.position(byteArrStart);
return CoderResult.unmappableForLength(1);
} else {
if (c < 0x04) {
byteArr[byteArrStart++] = (byte) c;
} else {
int index = (int) c >> 8;
index = encodeIndex[index];
if (index < 0) {
cb.position(x);
bb.position(byteArrStart);
return CoderResult.unmappableForLength(1);
}
index <<= 8;
index += (int) c & 0xFF;
if ((byte) arr[index] != 0) {
byteArr[byteArrStart++] = (byte) arr[index];
} else {
cb.position(x);
bb.position(byteArrStart);
return CoderResult.unmappableForLength(1);
}
}
}
}
cb.position(x);
bb.position(byteArrStart);
if (rem == bbRemaining && cb.hasRemaining()) {
return CoderResult.OVERFLOW;
}
} else {
while (cb.hasRemaining()) {
if (bbRemaining == 0) return CoderResult.OVERFLOW;
char c = cb.get();
if (c > (char) 0x20AC) {
if (c >= 0xD800 && c <= 0xDFFF) {
if (cb.hasRemaining()) {
char c1 = cb.get();
if (c1 >= 0xD800 && c1 <= 0xDFFF) {
cb.position(cb.position() - 2);
return CoderResult.unmappableForLength(2);
} else {
cb.position(cb.position() - 1);
}
} else {
cb.position(cb.position() - 1);
return CoderResult.UNDERFLOW;
}
cb.position(cb.position() - 1);
return CoderResult.malformedForLength(1);
}
cb.position(cb.position() - 1);
return CoderResult.unmappableForLength(1);
} else {
if (c < 0x04) {
bb.put((byte) c);
} else {
int index = (int) c >> 8;
index = encodeIndex[index];
if (index < 0) {
cb.position(cb.position() - 1);
return CoderResult.unmappableForLength(1);
}
index <<= 8;
index += (int) c & 0xFF;
if ((byte) arr[index] != 0) {
bb.put((byte) arr[index]);
} else {
cb.position(cb.position() - 1);
return CoderResult.unmappableForLength(1);
}
}
bbRemaining--;
}
}
}
}
return CoderResult.UNDERFLOW;
}