本文整理匯總了Java中java.nio.charset.CoderResult.isUnmappable方法的典型用法代碼示例。如果您正苦於以下問題：Java CoderResult.isUnmappable方法的具體用法？Java CoderResult.isUnmappable怎麽用？Java CoderResult.isUnmappable使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類java.nio.charset.CoderResult的用法示例。
在下文中一共展示了CoderResult.isUnmappable方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: length
import java.nio.charset.CoderResult; //導入方法依賴的package包/類
/**
* Compute lenght of this sequence - quite expensive operation, indeed.
*/
@Override
public int length() {
if (length != -1) {
return length;
}
long start = System.currentTimeMillis();
int charactersRead = 0;
long bytesRead = 0;
MappedByteBuffer mappedByteBuffer = null;
CharBuffer charBuffer = CharBuffer.allocate(SIZE_LIMIT);
CharsetDecoder decoder = prepareDecoder(charset);
decoder.onUnmappableCharacter(CodingErrorAction.IGNORE);
try {
while (bytesRead < fileSize) {
mappedByteBuffer = fileChannel.map(
FileChannel.MapMode.READ_ONLY, bytesRead,
Math.min(SIZE_LIMIT, fileSize - bytesRead));
CoderResult result;
do {
charBuffer.clear();
result = decoder.decode(
mappedByteBuffer, charBuffer,
bytesRead + SIZE_LIMIT >= fileSize);
if (result.isUnmappable() || result.isMalformed()
|| result.isError()) {
throw new IOException("Error decoding file: "
+ result.toString() + " ");
}
if (bytesRead + SIZE_LIMIT >= fileSize) {
LOG.info("Coding end");
}
charactersRead += charBuffer.position();
} while (result.isOverflow());
int readNow = mappedByteBuffer.position();
bytesRead += readNow;
unmap(mappedByteBuffer);
}
charBuffer.clear();
boolean repeat;
do {
repeat = decoder.flush(charBuffer).isOverflow();
charactersRead += charBuffer.position();
charBuffer.clear();
} while (repeat);
} catch (IOException ex) {
if (mappedByteBuffer != null) {
unmap(mappedByteBuffer);
}
Exceptions.printStackTrace(ex);
}
length = charactersRead;
LOG.log(Level.INFO, "Length computed in {0} ms.", //NOI18N
System.currentTimeMillis() - start);
return length;
}
示例2: charAt
import java.nio.charset.CoderResult; //導入方法依賴的package包/類
@Override
public char charAt(int index) {
if (index < lastIndex) {
returns++;
}
lastIndex = index;
if (index > length()) {
throw new IndexOutOfBoundsException();
}
if (isInBuffer(index)) {
return getFromBuffer(index);
} else {
if (index < currentStart || currentStart == -1) {
reset();
}
retrieves++;
MappedByteBuffer mappedByteBuffer = null;
try {
while (readBytes < fileSize) {
try {
mappedByteBuffer = fileChannel.map(
FileChannel.MapMode.READ_ONLY,
readBytes,
Math.min(SIZE_LIMIT, fileSize - readBytes));
maps++;
CoderResult result;
do {
currentStart = currentStart == -1 ? 0
: currentStart + currentBuffer.limit();
currentBuffer.clear();
result = currentDecoder.decode(mappedByteBuffer,
currentBuffer,
readBytes + SIZE_LIMIT >= fileSize);
currentBuffer.flip();
int readChars = currentBuffer.limit();
if (currentStart + readChars > index) {
return getFromBuffer(index);
}
if (result.isUnmappable() || result.isMalformed()
|| result.isError()) {
throw new IOException("Error decoding file: "
+ result.toString() + " ");
}
} while (result.isOverflow());
} finally {
if (mappedByteBuffer != null) {
int readNow = mappedByteBuffer.position();
readBytes += readNow;
unmap(mappedByteBuffer);
}
}
}
boolean repeat;
do {
repeat = currentDecoder.flush(currentBuffer).isOverflow();
int size = currentBuffer.position();
if (size + currentStart > index) {
currentBuffer.flip();
return currentBuffer.get(index - currentStart);
}
currentBuffer.clear();
currentStart += size;
} while (repeat);
} catch (IOException ex) {
if (mappedByteBuffer != null) {
unmap(mappedByteBuffer);
}
Exceptions.printStackTrace(ex);
}
}
throw new IllegalStateException(
"Cannot get character."); //NOI18N
}
示例3: decode
import java.nio.charset.CoderResult; //導入方法依賴的package包/類
@SuppressWarnings("cast")
public CharBuffer decode(ByteBuffer inbuf, boolean ignoreEncodingErrors) {
String encName = getEncodingName();
CharsetDecoder decoder;
try {
decoder = getDecoder(encName, ignoreEncodingErrors);
} catch (IllegalCharsetNameException | UnsupportedCharsetException e) {
log.error(Errors.UnsupportedEncoding(encName));
return (CharBuffer)CharBuffer.allocate(1).flip();
}
// slightly overestimate the buffer size to avoid reallocation.
float factor =
decoder.averageCharsPerByte() * 0.8f +
decoder.maxCharsPerByte() * 0.2f;
CharBuffer dest = CharBuffer.
allocate(10 + (int)(inbuf.remaining()*factor));
while (true) {
CoderResult result = decoder.decode(inbuf, dest, true);
dest.flip();
if (result.isUnderflow()) { // done reading
// make sure there is at least one extra character
if (dest.limit() == dest.capacity()) {
dest = CharBuffer.allocate(dest.capacity()+1).put(dest);
dest.flip();
}
return dest;
} else if (result.isOverflow()) { // buffer too small; expand
int newCapacity =
10 + dest.capacity() +
(int)(inbuf.remaining()*decoder.maxCharsPerByte());
dest = CharBuffer.allocate(newCapacity).put(dest);
} else if (result.isMalformed() || result.isUnmappable()) {
// bad character in input
StringBuilder unmappable = new StringBuilder();
int len = result.length();
for (int i = 0; i < len; i++) {
unmappable.append(String.format("%02X", inbuf.get()));
}
String charsetName = charset == null ? encName : charset.name();
log.error(dest.limit(),
Errors.IllegalCharForEncoding(unmappable.toString(), charsetName));
// undo the flip() to prepare the output buffer
// for more translation
dest.position(dest.limit());
dest.limit(dest.capacity());
dest.put((char)0xfffd); // backward compatible
} else {
throw new AssertionError(result);
}
}
// unreached
}