下面列出了java.nio.charset.CoderResult# unmappableForLength ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private CoderResult decodeBufferLoop(ByteBuffer src, CharBuffer dst) {
int mark = src.position();
try {
while (src.hasRemaining()) {
int b = src.get();
char c = decode(b);
if (c == '\uFFFD')
return CoderResult.unmappableForLength(1);
if (!dst.hasRemaining())
return CoderResult.OVERFLOW;
mark++;
dst.put(c);
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
int mark = src.position();
try {
while (src.hasRemaining()) {
char c = src.get();
int b = encode(c);
if (b == UNMAPPABLE_ENCODING) {
if (Character.isSurrogate(c)) {
if (sgp == null)
sgp = new Surrogate.Parser();
if (sgp.parse(c, src) < 0)
return sgp.error();
return sgp.unmappableResult();
}
return CoderResult.unmappableForLength(1);
}
if (!dst.hasRemaining())
return CoderResult.OVERFLOW;
dst.put((byte)b);
mark++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
/**
* Generates one or two UTF-16 characters to represent the given UCS-4
* character.
*
* @param uc The UCS-4 character
* @param len The number of input bytes from which the UCS-4 value
* was constructed (used when creating result objects)
* @param da The destination array, to which one or two UTF-16
* characters will be written
* @param dp The destination position
* @param dl The destination limit
*
* @returns Either a positive count of the number of UTF-16 characters
* written to the destination buffer, or -1, in which case
* error() will return a descriptive result object
*/
public int generate(int uc, int len, char[] da, int dp, int dl) {
if (Character.isBmpCodePoint(uc)) {
char c = (char) uc;
if (Character.isSurrogate(c)) {
error = CoderResult.malformedForLength(len);
return -1;
}
if (dl - dp < 1) {
error = CoderResult.OVERFLOW;
return -1;
}
da[dp] = c;
error = null;
return 1;
} else if (Character.isValidCodePoint(uc)) {
if (dl - dp < 2) {
error = CoderResult.OVERFLOW;
return -1;
}
da[dp] = Character.highSurrogate(uc);
da[dp + 1] = Character.lowSurrogate(uc);
error = null;
return 2;
} else {
error = CoderResult.unmappableForLength(len);
return -1;
}
}
/**
* Returns an unmappable-input result object, with the appropriate
* input length, for the previously-parsed character.
*/
public CoderResult unmappableResult() {
assert (error == null);
return CoderResult.unmappableForLength(isPair ? 2 : 1);
}
private CoderResult encodeArrayLoop(CharBuffer src, ByteBuffer dst) {
char[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
byte[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
int index;
int spaceNeeded;
int i;
try {
while (sp < sl) {
boolean allZeroes = true;
char inputChar = sa[sp];
if (Character.isSurrogate(inputChar)) {
if (sgp.parse(inputChar, sa, sp, sl) < 0)
return sgp.error();
return sgp.unmappableResult();
}
if (inputChar >= '\uFFFE')
return CoderResult.unmappableForLength(1);
String theChars;
char aChar;
// We have a valid character, get the bytes for it
index = index1[((inputChar & mask1) >> shift)] + (inputChar & mask2);
if (index < 7500)
theChars = index2;
else if (index < 15000) {
index = index - 7500;
theChars = index2a;
} else if (index < 22500){
index = index - 15000;
theChars = index2b;
}
else {
index = index - 22500;
theChars = index2c;
}
aChar = theChars.charAt(2*index);
outputByte[0] = (byte)((aChar & 0xff00)>>8);
outputByte[1] = (byte)(aChar & 0x00ff);
aChar = theChars.charAt(2*index + 1);
outputByte[2] = (byte)((aChar & 0xff00)>>8);
outputByte[3] = (byte)(aChar & 0x00ff);
for (i = 0; i < outputByte.length; i++) {
if (outputByte[i] != 0x00) {
allZeroes = false;
break;
}
}
if (allZeroes && inputChar != '\u0000') {
return CoderResult.unmappableForLength(1);
}
int oindex = 0;
for (spaceNeeded = outputByte.length;
spaceNeeded > 1; spaceNeeded--){
if (outputByte[oindex++] != 0x00 )
break;
}
if (dp + spaceNeeded > dl)
return CoderResult.OVERFLOW;
for (i = outputByte.length - spaceNeeded;
i < outputByte.length; i++) {
da[dp++] = outputByte[i];
}
sp++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
private CoderResult encodeBufferLoop(CharBuffer src,
ByteBuffer dst)
{
int outputSize = 0;
byte[] outputByte = new byte[8];
int inputSize = 0; // Size of input
newshiftout = shiftout;
newSODesDefined = SODesDefined;
newSS2DesDefined = SS2DesDefined;
newSS3DesDefined = SS3DesDefined;
int mark = src.position();
try {
while (src.hasRemaining()) {
char inputChar = src.get();
if (Character.isSurrogate(inputChar)) {
if (sgp.parse(inputChar, src) < 0)
return sgp.error();
return sgp.unmappableResult();
}
if (inputChar < 0x80) { // ASCII
if (shiftout){
newshiftout = false;
outputSize = 2;
outputByte[0] = ISO_SI;
outputByte[1] = (byte)(inputChar & 0x7f);
} else {
outputSize = 1;
outputByte[0] = (byte)(inputChar & 0x7f);
}
if(inputChar == '\n'){
newSODesDefined = false;
newSS2DesDefined = false;
newSS3DesDefined = false;
}
} else {
outputSize = unicodeToNative(inputChar, outputByte);
if (outputSize == 0) {
return CoderResult.unmappableForLength(1);
}
}
if (dst.remaining() < outputSize)
return CoderResult.OVERFLOW;
for (int i = 0; i < outputSize; i++)
dst.put(outputByte[i]);
mark++;
shiftout = newshiftout;
SODesDefined = newSODesDefined;
SS2DesDefined = newSS2DesDefined;
SS3DesDefined = newSS3DesDefined;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
int mark = src.position();
int outputSize = 0; // size of output
int spaceNeeded;
try {
while (src.hasRemaining()) {
int index;
int theBytes;
char c = src.get();
if (Surrogate.is(c)) {
if (sgp.parse(c, src) < 0)
return sgp.error();
return sgp.unmappableResult();
}
if (c >= '\uFFFE')
return CoderResult.unmappableForLength(1);
index = index1[((c & mask1) >> shift)]
+ (c & mask2);
if (index < 15000)
theBytes = (int)(index2.charAt(index));
else
theBytes = (int)(index2a.charAt(index-15000));
b1 = (byte)((theBytes & 0x0000ff00)>>8);
b2 = (byte)(theBytes & 0x000000ff);
if (b1== 0x00 && b2 == 0x00
&& c != '\u0000') {
return CoderResult.unmappableForLength(1);
}
if (currentState == DBCS && b1 == 0x00) {
if (dst.remaining() < 1)
return CoderResult.OVERFLOW;
currentState = SBCS;
dst.put(SI);
} else if (currentState == SBCS && b1 != 0x00) {
if (dst.remaining() < 1)
return CoderResult.OVERFLOW;
currentState = DBCS;
dst.put(SO);
}
if (currentState == DBCS)
spaceNeeded = 2;
else
spaceNeeded = 1;
if (dst.remaining() < spaceNeeded)
return CoderResult.OVERFLOW;
if (currentState == SBCS)
dst.put(b2);
else {
dst.put(b1);
dst.put(b2);
}
mark++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult encodeArrayLoop(CharBuffer src,
ByteBuffer dst)
{
char[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
byte[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
int outputSize = 0;
try {
char inputChar;
while (sp < sl) {
int index = Integer.MIN_VALUE;
inputChar = sa[sp];
if (inputChar >= 0x0000 && inputChar <= 0x007f) {
if (dl - dp < 1)
return CoderResult.OVERFLOW;
da[dp++] = (byte) inputChar;
sp++;
continue;
}
// if inputChar == ZWJ replace it with halant
// if inputChar == ZWNJ replace it with Nukta
if (inputChar == 0x200c) {
inputChar = HALANT_CHAR;
}
else if (inputChar == 0x200d) {
inputChar = NUKTA_CHAR;
}
if (inputChar >= 0x0900 && inputChar <= 0x097f) {
index = ((int)(inputChar) - 0x0900)*2;
}
if (Character.isSurrogate(inputChar)) {
if (sgp.parse(inputChar, sa, sp, sl) < 0)
return sgp.error();
return sgp.unmappableResult();
}
if (index == Integer.MIN_VALUE ||
encoderMappingTable[index] == NO_CHAR) {
return CoderResult.unmappableForLength(1);
} else {
if(encoderMappingTable[index + 1] == NO_CHAR) {
if(dl - dp < 1)
return CoderResult.OVERFLOW;
da[dp++] = encoderMappingTable[index];
} else {
if(dl - dp < 2)
return CoderResult.OVERFLOW;
da[dp++] = encoderMappingTable[index];
da[dp++] = encoderMappingTable[index + 1];
}
sp++;
}
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
private CoderResult encodeBufferLoop(CharBuffer src,
ByteBuffer dst)
{
int outputSize = 0;
byte[] outputByte;
int inputSize = 0; // Size of input
byte[] tmpBuf = new byte[3];
int mark = src.position();
try {
while (src.hasRemaining()) {
outputByte = tmpBuf;
char c = src.get();
if (Character.isSurrogate(c)) {
if (sgp.parse(c, src) < 0)
return sgp.error();
return sgp.unmappableResult();
}
outputSize = encodeSingle(c, outputByte);
if (outputSize == 0) { // DoubleByte
int ncode = encodeDouble(c);
if (ncode != 0 ) {
if ((ncode & 0xFF0000) == 0) {
outputByte[0] = (byte) ((ncode & 0xff00) >> 8);
outputByte[1] = (byte) (ncode & 0xff);
outputSize = 2;
} else {
outputByte[0] = (byte) 0x8f;
outputByte[1] = (byte) ((ncode & 0xff00) >> 8);
outputByte[2] = (byte) (ncode & 0xff);
outputSize = 3;
}
} else {
return CoderResult.unmappableForLength(1);
}
}
if (dst.remaining() < outputSize)
return CoderResult.OVERFLOW;
// Put the byte in the output buffer
for (int i = 0; i < outputSize; i++) {
dst.put(outputByte[i]);
}
mark++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult encodeBufferLoop(CharBuffer src,
ByteBuffer dst)
{
int outputSize = 0;
byte[] outputByte;
int inputSize = 0; // Size of input
byte[] tmpBuf = new byte[3];
int mark = src.position();
try {
while (src.hasRemaining()) {
outputByte = tmpBuf;
char c = src.get();
if (Character.isSurrogate(c)) {
if (sgp.parse(c, src) < 0)
return sgp.error();
return sgp.unmappableResult();
}
outputSize = encodeSingle(c, outputByte);
if (outputSize == 0) { // DoubleByte
int ncode = encodeDouble(c);
if (ncode != 0 ) {
if ((ncode & 0xFF0000) == 0) {
outputByte[0] = (byte) ((ncode & 0xff00) >> 8);
outputByte[1] = (byte) (ncode & 0xff);
outputSize = 2;
} else {
outputByte[0] = (byte) 0x8f;
outputByte[1] = (byte) ((ncode & 0xff00) >> 8);
outputByte[2] = (byte) (ncode & 0xff);
outputSize = 3;
}
} else {
return CoderResult.unmappableForLength(1);
}
}
if (dst.remaining() < outputSize)
return CoderResult.OVERFLOW;
// Put the byte in the output buffer
for (int i = 0; i < outputSize; i++) {
dst.put(outputByte[i]);
}
mark++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
protected CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
int mark = src.position();
try {
while (src.hasRemaining()) {
int db;
char c = src.get();
if (leftoverBase != 0) {
boolean isComp = false;
db = encodeComposite(leftoverBase, c);
if (db == UNMAPPABLE)
db = encodeChar(leftoverBase);
else
isComp = true;
if (dst.remaining() < 2)
return CoderResult.OVERFLOW;
dst.put((byte)(db >> 8));
dst.put((byte)(db));
leftoverBase = 0;
if (isComp) {
mark++;
continue;
}
}
if (isCompositeBase(c)) {
leftoverBase = c;
} else {
db = encodeChar(c);
if (db <= MAX_SINGLEBYTE) { // Single-byte
if (dst.remaining() < 1)
return CoderResult.OVERFLOW;
dst.put((byte)db);
} else if (db != UNMAPPABLE) { // DoubleByte
if (dst.remaining() < 2)
return CoderResult.OVERFLOW;
dst.put((byte)(db >> 8));
dst.put((byte)(db));
} else if (Character.isHighSurrogate(c)) {
if (!src.hasRemaining()) // Surrogates
return CoderResult.UNDERFLOW;
char c2 = src.get();
if (!Character.isLowSurrogate(c2))
return CoderResult.malformedForLength(1);
db = encodeSurrogate(c, c2);
if (db == UNMAPPABLE)
return CoderResult.unmappableForLength(2);
if (dst.remaining() < 2)
return CoderResult.OVERFLOW;
dst.put((byte)(db >> 8));
dst.put((byte)(db));
mark++;
} else if (Character.isLowSurrogate(c)) {
return CoderResult.malformedForLength(1);
} else {
return CoderResult.unmappableForLength(1);
}
}
mark++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) {
byte[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
char[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
try {
while (sp < sl) {
int b1, b2;
b1 = sa[sp];
int inputSize = 1;
int outputSize = 1;
highSurrogate = lowSurrogate = 0;
char c = decodeSingle(b1);
if (c == REPLACE_CHAR) {
b1 &= 0xff;
if (sl - sp < 2)
return CoderResult.UNDERFLOW;
b2 = sa[sp + 1] & 0xff;
c = decodeDouble(b1, b2);
inputSize = 2;
if (c == REPLACE_CHAR)
return CoderResult.unmappableForLength(inputSize);
outputSize = (highSurrogate > 0) ? 2: 1;
}
if (dl - dp < outputSize)
return CoderResult.OVERFLOW;
if (outputSize == 2) {
da[dp++] = highSurrogate;
da[dp++] = lowSurrogate;
} else {
da[dp++] = c;
}
sp += inputSize;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
private CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) {
byte[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
char[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
try {
while (sp < sl) {
int b1, b2;
b1 = sa[sp];
int inputSize = 1;
int outputSize = 1;
highSurrogate = lowSurrogate = 0;
char c = decodeSingle(b1);
if (c == REPLACE_CHAR) {
b1 &= 0xff;
if (sl - sp < 2)
return CoderResult.UNDERFLOW;
b2 = sa[sp + 1] & 0xff;
c = decodeDouble(b1, b2);
inputSize = 2;
if (c == REPLACE_CHAR)
return CoderResult.unmappableForLength(inputSize);
outputSize = (highSurrogate > 0) ? 2: 1;
}
if (dl - dp < outputSize)
return CoderResult.OVERFLOW;
if (outputSize == 2) {
da[dp++] = highSurrogate;
da[dp++] = lowSurrogate;
} else {
da[dp++] = c;
}
sp += inputSize;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
protected CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) {
byte[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
char[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
try {
while (sp < sl) {
int b1 = sa[sp] & 0xff;
char c = decodeSingle(b1);
int inSize = 1, outSize = 1;
char[] cc = null;
if (c == UNMAPPABLE_DECODING) {
if (sl - sp < 2)
return CoderResult.UNDERFLOW;
int b2 = sa[sp + 1] & 0xff;
inSize++;
if (b2 < b2Min || b2 > b2Max)
return CoderResult.unmappableForLength(2);
c = decodeDouble(b1, b2); //bmp
if (c == UNMAPPABLE_DECODING) {
c = decodeDoubleEx(b1, b2); //supp
if (c == UNMAPPABLE_DECODING) {
c = decodeBig5(b1, b2); //big5
if (c == UNMAPPABLE_DECODING)
return CoderResult.unmappableForLength(2);
} else {
// supplementary character in u+2xxxx area
outSize = 2;
}
}
}
if (dl - dp < outSize)
return CoderResult.OVERFLOW;
if (outSize == 2) {
// supplementary characters
da[dp++] = Surrogate.high(0x20000 + c);
da[dp++] = Surrogate.low(0x20000 + c);
} else {
da[dp++] = c;
}
sp += inSize;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
private CoderResult encodeBufferLoop(CharBuffer src,
ByteBuffer dst)
{
int outSize;
int inSize;
int mark = src.position();
try {
while (src.hasRemaining()) {
inSize = 1;
char c = src.get();
if (c < 0x80) { // ASCII
outSize = 1;
bb[0] = (byte)c;
} else {
outSize = toEUC(c, bb);
if (outSize == -1) {
if (Character.isHighSurrogate(c)) {
if (!src.hasRemaining())
return CoderResult.UNDERFLOW;
char c2 = src.get();
if (!Character.isLowSurrogate(c2))
return CoderResult.malformedForLength(1);
outSize = toEUC(c, c2, bb);
inSize = 2;
} else if (Character.isLowSurrogate(c)) {
return CoderResult.malformedForLength(1);
}
}
}
if (outSize == -1)
return CoderResult.unmappableForLength(inSize);
if (dst.remaining() < outSize)
return CoderResult.OVERFLOW;
for (int i = 0; i < outSize; i++)
dst.put(bb[i]);
mark += inSize;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult encodeArrayLoop(CharBuffer src, ByteBuffer dst) {
char[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
byte[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
try {
while (sp < sl) {
char c = sa[sp];
if (Character.isSurrogate(c)) {
if (sgp.parse(c, sa, sp, sl) < 0)
return sgp.error();
return sgp.unmappableResult();
}
if (c >= '\uFFFE')
return CoderResult.unmappableForLength(1);
if (dl - dp < 1)
return CoderResult.OVERFLOW;
char e = index2.charAt(index1[(c & mask1) >> shift]
+ (c & mask2));
// If output byte is zero because input char is zero
// then character is mappable, o.w. fail
if (e == '\u0000' && c != '\u0000')
return CoderResult.unmappableForLength(1);
sp++;
da[dp++] = (byte)e;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
private CoderResult encodeArrayLoop(CharBuffer src,
ByteBuffer dst)
{
char[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
byte[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
int outputSize = 0;
byte[] outputByte;
int inputSize = 0; // Size of input
byte[] tmpBuf = new byte[3];
try {
while (sp < sl) {
outputByte = tmpBuf;
char c = sa[sp];
if (Character.isSurrogate(c)) {
if (sgp.parse(c, sa, sp, sl) < 0)
return sgp.error();
return sgp.unmappableResult();
}
outputSize = encodeSingle(c, outputByte);
if (outputSize == 0) { // DoubleByte
int ncode = encodeDouble(c);
if (ncode != UNMAPPABLE_ENCODING) {
if ((ncode & 0xFF0000) == 0) {
outputByte[0] = (byte) ((ncode & 0xff00) >> 8);
outputByte[1] = (byte) (ncode & 0xff);
outputSize = 2;
} else {
outputByte[0] = (byte) 0x8f;
outputByte[1] = (byte) ((ncode & 0xff00) >> 8);
outputByte[2] = (byte) (ncode & 0xff);
outputSize = 3;
}
} else {
return CoderResult.unmappableForLength(1);
}
}
if (dl - dp < outputSize)
return CoderResult.OVERFLOW;
// Put the byte in the output buffer
for (int i = 0; i < outputSize; i++) {
da[dp++] = outputByte[i];
}
sp++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}
protected CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
int mark = src.position();
try {
while (src.hasRemaining()) {
char c = src.get();
int bb = encodeChar(c);
if (bb == UNMAPPABLE_ENCODING) {
if (Character.isSurrogate(c)) {
if (sgp().parse(c, src) < 0)
return sgp.error();
return sgp.unmappableResult();
}
return CoderResult.unmappableForLength(1);
}
if (bb > MAX_SINGLEBYTE) { // DoubleByte
if (currentState == SBCS) {
if (dst.remaining() < 1)
return CoderResult.OVERFLOW;
currentState = DBCS;
dst.put(SO);
}
if (dst.remaining() < 2)
return CoderResult.OVERFLOW;
dst.put((byte)(bb >> 8));
dst.put((byte)(bb));
} else { // Single-byte
if (currentState == DBCS) {
if (dst.remaining() < 1)
return CoderResult.OVERFLOW;
currentState = SBCS;
dst.put(SI);
}
if (dst.remaining() < 1)
return CoderResult.OVERFLOW;
dst.put((byte)bb);
}
mark++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
int mark = src.position();
int outputSize = 0; // size of output
try {
while (src.hasRemaining()) {
int index;
int theBytes;
char c = src.get();
if (Surrogate.is(c)) {
if (sgp.parse(c, src) < 0)
return sgp.error();
return sgp.unmappableResult();
}
if (c >= '\uFFFE')
return CoderResult.unmappableForLength(1);
index = index1[((c & mask1) >> shift)]
+ (c & mask2);
if (index < 15000)
theBytes = (int)(index2.charAt(index));
else
theBytes = (int)(index2a.charAt(index-15000));
b1 = (byte)((theBytes & 0x0000ff00)>>8);
b2 = (byte)(theBytes & 0x000000ff);
if (b1 == 0x00 && b2 == 0x00
&& c != '\u0000') {
return CoderResult.unmappableForLength(1);
}
if (b1 == 0) {
if (dst.remaining() < 1)
return CoderResult.OVERFLOW;
dst.put((byte) b2);
} else {
if (dst.remaining() < 2)
return CoderResult.OVERFLOW;
dst.put((byte) b1);
dst.put((byte) b2);
}
mark++;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(mark);
}
}
private CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) {
byte[] sa = src.array();
int sp = src.arrayOffset() + src.position();
int sl = src.arrayOffset() + src.limit();
assert (sp <= sl);
sp = (sp <= sl ? sp : sl);
char[] da = dst.array();
int dp = dst.arrayOffset() + dst.position();
int dl = dst.arrayOffset() + dst.limit();
assert (dp <= dl);
dp = (dp <= dl ? dp : dl);
try {
while (sp < sl) {
int b1, b2;
b1 = sa[sp];
int inputSize = 1;
int v = 0;
char outputChar = REPLACE_CHAR;
if (b1 < 0)
b1 += 256;
if (b1 == SO) { // Shift out
// For SO characters - simply validate the state and if OK
// update the state and go to the next byte
if (currentState != SBCS)
return CoderResult.malformedForLength(1);
else
currentState = DBCS;
} else if (b1 == SI) {
// For SI characters - simply validate the state and if OK
// update the state and go to the next byte
if (currentState != DBCS) {
return CoderResult.malformedForLength(1);
} else {
currentState = SBCS;
}
} else {
if (currentState == SBCS) {
outputChar = singleByteToChar.charAt(b1);
} else {
if (sl - sp < 2)
return CoderResult.UNDERFLOW;
b2 = sa[sp + 1];
if (b2 < 0)
b2 += 256;
inputSize++;
// Check validity of dbcs ebcdic byte pair values
if ((b1 != 0x40 || b2 != 0x40) &&
(b2 < 0x41 || b2 > 0xfe)) {
return CoderResult.malformedForLength(2);
}
// Lookup in the two level index
v = b1 * 256 + b2;
outputChar = index2.charAt(index1[((v & mask1) >> shift)]
+ (v & mask2));
}
if (outputChar == '\uFFFD')
return CoderResult.unmappableForLength(inputSize);
if (dl - dp < 1)
return CoderResult.OVERFLOW;
da[dp++] = outputChar;
}
sp += inputSize;
}
return CoderResult.UNDERFLOW;
} finally {
src.position(sp - src.arrayOffset());
dst.position(dp - dst.arrayOffset());
}
}