Java Code Examples for java.nio.charset.CharsetDecoder#maxCharsPerByte()
The following examples show how to use
java.nio.charset.CharsetDecoder#maxCharsPerByte() .
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Example 1
| Source File: ZipCoder.java From openjdk-8 with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 2
| Source File: ZipCoder.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
// UTF-8 only for now. Other ArrayDeocder only handles
// CodingErrorAction.REPLACE mode. ZipCoder uses
// REPORT mode.
if (isUTF8 && cd instanceof ArrayDecoder) {
int clen = ((ArrayDecoder)cd).decode(ba, 0, length, ca);
if (clen == -1) // malformed
throw new IllegalArgumentException("MALFORMED");
return new String(ca, 0, clen);
}
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 3
| Source File: ZipCoder.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
// UTF-8 only for now. Other ArrayDeocder only handles
// CodingErrorAction.REPLACE mode. ZipCoder uses
// REPORT mode.
if (isUTF8 && cd instanceof ArrayDecoder) {
int clen = ((ArrayDecoder)cd).decode(ba, 0, length, ca);
if (clen == -1) // malformed
throw new IllegalArgumentException("MALFORMED");
return new String(ca, 0, clen);
}
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 4
| Source File: ZipCoder.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 5
| Source File: ZipCoder.java From openjdk-8-source with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 6
| Source File: ZipCoder.java From openjdk-8-source with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
// UTF-8 only for now. Other ArrayDeocder only handles
// CodingErrorAction.REPLACE mode. ZipCoder uses
// REPORT mode.
if (isUTF8 && cd instanceof ArrayDecoder) {
int clen = ((ArrayDecoder)cd).decode(ba, 0, length, ca);
if (clen == -1) // malformed
throw new IllegalArgumentException("MALFORMED");
return new String(ca, 0, clen);
}
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 7
| Source File: ZipCoder.java From openjdk-jdk8u with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 8
| Source File: ZipCoder.java From JDKSourceCode1.8 with MIT License | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
// UTF-8 only for now. Other ArrayDeocder only handles
// CodingErrorAction.REPLACE mode. ZipCoder uses
// REPORT mode.
if (isUTF8 && cd instanceof ArrayDecoder) {
int clen = ((ArrayDecoder)cd).decode(ba, 0, length, ca);
if (clen == -1) // malformed
throw new IllegalArgumentException("MALFORMED");
return new String(ca, 0, clen);
}
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 9
| Source File: ZipCoder.java From jdk-1.7-annotated with Apache License 2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
// UTF-8 only for now. Other ArrayDeocder only handles
// CodingErrorAction.REPLACE mode. ZipCoder uses
// REPORT mode.
if (isUTF8 && cd instanceof ArrayDecoder) {
int clen = ((ArrayDecoder)cd).decode(ba, 0, length, ca);
if (clen == -1) // malformed
throw new IllegalArgumentException("MALFORMED");
return new String(ca, 0, clen);
}
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 10
| Source File: ZipCoder.java From jdk8u60 with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 11
| Source File: ZipCoder.java From TencentKona-8 with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
// UTF-8 only for now. Other ArrayDeocder only handles
// CodingErrorAction.REPLACE mode. ZipCoder uses
// REPORT mode.
if (isUTF8 && cd instanceof ArrayDecoder) {
int clen = ((ArrayDecoder)cd).decode(ba, 0, length, ca);
if (clen == -1) // malformed
throw new IllegalArgumentException("MALFORMED");
return new String(ca, 0, clen);
}
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 12
| Source File: ZipCoder.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
// UTF-8 only for now. Other ArrayDeocder only handles
// CodingErrorAction.REPLACE mode. ZipCoder uses
// REPORT mode.
if (isUTF8 && cd instanceof ArrayDecoder) {
int clen = ((ArrayDecoder)cd).decode(ba, 0, length, ca);
if (clen == -1) // malformed
throw new IllegalArgumentException("MALFORMED");
return new String(ca, 0, clen);
}
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 13
| Source File: ZipCoder.java From dragonwell8_jdk with GNU General Public License v2.0 | 6 votes |
|
String toString(byte[] ba, int length) {
CharsetDecoder cd = decoder().reset();
int len = (int)(length * cd.maxCharsPerByte());
char[] ca = new char[len];
if (len == 0)
return new String(ca);
ByteBuffer bb = ByteBuffer.wrap(ba, 0, length);
CharBuffer cb = CharBuffer.wrap(ca);
CoderResult cr = cd.decode(bb, cb, true);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
cr = cd.flush(cb);
if (!cr.isUnderflow())
throw new IllegalArgumentException(cr.toString());
return new String(ca, 0, cb.position());
}
Example 14
| Source File: StringHelper.java From ph-commons with Apache License 2.0 | 5 votes |
|
/**
* Decode a byte array to a char array using the provided charset. This does
* the same as <code>new String (aByteArray, aCharset)</code> just without the
* intermediate objects.
*
* @param aByteArray
* The byte array to be decoded. May not be <code>null</code>.
* @param nOfs
* Offset into byte array. Must be ≥ 0.
* @param nLen
* Bytes to encode. Must be ≥ 0.
* @param aCharset
* Charset to be used. May not be <code>null</code>.
* @return The created char array. Never <code>null</code>.
* @since 8.6.4
*/
@Nonnull
public static char [] decodeBytesToChars (@Nonnull final byte [] aByteArray,
@Nonnegative final int nOfs,
@Nonnegative final int nLen,
@Nonnull final Charset aCharset)
{
final CharsetDecoder aDecoder = aCharset.newDecoder ();
final int nDecodedLen = (int) (nLen * (double) aDecoder.maxCharsPerByte ());
final char [] aCharArray = new char [nDecodedLen];
if (nLen == 0)
return aCharArray;
aDecoder.onMalformedInput (CodingErrorAction.REPLACE).onUnmappableCharacter (CodingErrorAction.REPLACE).reset ();
final ByteBuffer aSrcBuf = ByteBuffer.wrap (aByteArray, nOfs, nLen);
final CharBuffer aDstBuf = CharBuffer.wrap (aCharArray);
try
{
CoderResult aRes = aDecoder.decode (aSrcBuf, aDstBuf, true);
if (!aRes.isUnderflow ())
aRes.throwException ();
aRes = aDecoder.flush (aDstBuf);
if (!aRes.isUnderflow ())
aRes.throwException ();
}
catch (final CharacterCodingException x)
{
// Substitution is always enabled,
// so this shouldn't happen
throw new IllegalStateException (x);
}
final int nDstLen = aDstBuf.position ();
if (nDstLen == aCharArray.length)
return aCharArray;
return Arrays.copyOf (aCharArray, nDstLen);
}
Example 15
| Source File: ByteBufUtil.java From netty-4.1.22 with Apache License 2.0 | 5 votes |
|
static String decodeString(ByteBuf src, int readerIndex, int len, Charset charset) {
if (len == 0) {
return StringUtil.EMPTY_STRING;
}
final CharsetDecoder decoder = CharsetUtil.decoder(charset);
final int maxLength = (int) ((double) len * decoder.maxCharsPerByte());
CharBuffer dst = CHAR_BUFFERS.get();
if (dst.length() < maxLength) {
dst = CharBuffer.allocate(maxLength);
if (maxLength <= MAX_CHAR_BUFFER_SIZE) {
CHAR_BUFFERS.set(dst);
}
} else {
dst.clear();
}
if (src.nioBufferCount() == 1) {
decodeString(decoder, src.nioBuffer(readerIndex, len), dst);
} else {
// We use a heap buffer as CharsetDecoder is most likely able to use a fast-path if src and dst buffers
// are both backed by a byte array.//我们使用堆缓冲区，因为如果src和dst缓冲区，CharsetDecoder最有可能使用快速路径
// 都是由字节数组支持的。
ByteBuf buffer = src.alloc().heapBuffer(len);
try {
buffer.writeBytes(src, readerIndex, len);
// Use internalNioBuffer(...) to reduce object creation.
decodeString(decoder, buffer.internalNioBuffer(buffer.readerIndex(), len), dst);
} finally {
// Release the temporary buffer again.再次释放临时缓冲区。
buffer.release();
}
}
return dst.flip().toString();
}
Example 16
| Source File: PerforceShiftJISCharset.java From p4ic4idea with Apache License 2.0 | 4 votes |
|
/**
* Call the superclass constructor with the Charset object and pass
* along the chars/byte values from the decoder.
*/
Decoder(Charset cs, CharsetDecoder decoder) {
super(cs, decoder.averageCharsPerByte(), decoder.maxCharsPerByte());
this.decoder = decoder;
}
Example 17
| Source File: BaseFileManager.java From lua-for-android with BSD 3-Clause "New" or "Revised" License | 4 votes |
|
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
}
Example 18
| Source File: FileEncodingQuery.java From netbeans with Apache License 2.0 | 4 votes |
|
private ProxyDecoder (final CharsetDecoder defaultDecoder) {
super (ProxyCharset.this, defaultDecoder.averageCharsPerByte(), defaultDecoder.maxCharsPerByte());
this.currentDecoder = defaultDecoder;
initialized = true;
}
Example 19
| Source File: BaseFileManager.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
|
@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("unsupported.encoding", 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
}
Example 20
| Source File: PerforceShiftJISCharset.java From p4ic4idea with Apache License 2.0 | 4 votes |
|
/**
* Call the superclass constructor with the Charset object and pass
* along the chars/byte values from the decoder.
*/
Decoder(Charset cs, CharsetDecoder decoder) {
super(cs, decoder.averageCharsPerByte(), decoder.maxCharsPerByte());
this.decoder = decoder;
}
