com.alipay.sofa.jraft.util.internal

类 UnsafeUtf8Util

java.lang.Object

com.alipay.sofa.jraft.util.internal.UnsafeUtf8Util

public final class UnsafeUtf8Util
extends Object

Refer to the implementation of protobuf: https://github.com/protocolbuffers/protobuf/blob/master/java/core/src/main/java/com/google/protobuf/Utf8.java.

字段概要

字段

限定符和类型	字段和说明
static int	MAX_BYTES_PER_CHAR Maximum number of bytes per Java UTF-16 char in UTF-8.

方法概要

限定符和类型	方法和说明
static String	decodeUtf8(byte[] bytes, int index, int size)
static String	decodeUtf8Direct(ByteBuffer buffer, int index, int size)
static int	encodedLength(CharSequence sequence) Returns the number of bytes in the UTF-8-encoded form of sequence.
static int	encodeUtf8(CharSequence in, byte[] out, int offset, int length)
static void	encodeUtf8Direct(CharSequence in, ByteBuffer out)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

MAX_BYTES_PER_CHAR

public static final int MAX_BYTES_PER_CHAR

Maximum number of bytes per Java UTF-16 char in UTF-8.

另请参阅:

CharsetEncoder.maxBytesPerChar(), 常量字段值

方法详细资料

decodeUtf8

public static String decodeUtf8(byte[] bytes,
                                int index,
                                int size)

decodeUtf8Direct

public static String decodeUtf8Direct(ByteBuffer buffer,
                                      int index,
                                      int size)

encodeUtf8

public static int encodeUtf8(CharSequence in,
                             byte[] out,
                             int offset,
                             int length)

encodeUtf8Direct

public static void encodeUtf8Direct(CharSequence in,
                                    ByteBuffer out)

encodedLength

public static int encodedLength(CharSequence sequence)

Returns the number of bytes in the UTF-8-encoded form of sequence. For a string, this method is equivalent to string.getBytes(UTF_8).length, but is more efficient in both time and space.

抛出:

IllegalArgumentException - if sequence contains ill-formed UTF-16 (unpaired surrogates)