org.tio.core.utils

Class ByteBufferUtils

java.lang.Object

org.tio.core.utils.ByteBufferUtils

public class ByteBufferUtils
extends Object

Author:

tanyaowu 2017年10月19日 上午9:41:00

Constructor Summary

Constructors

Constructor and Description
ByteBufferUtils()

Method Summary

Modifier and Type	Method and Description
static ByteBuffer	composite(ByteBuffer byteBuffer1, ByteBuffer byteBuffer2) 组合两个bytebuffer，把可读部分的组合成一个新的bytebuffer
static ByteBuffer	copy(ByteBuffer src)
static void	copy(ByteBuffer src, int srcStartindex, ByteBuffer dest, int destStartIndex, int length)
static ByteBuffer	copy(ByteBuffer src, int startindex, int endindex)
static String	getUtf8(byte[] bytes) 获取utf-8字符串
static int	indexOf(ByteBuffer buffer, char theChar, int maxlength)
static int	lineEnd(ByteBuffer buffer)
static int	lineEnd(ByteBuffer buffer, int maxlength)
static byte	read(ByteBuffer buffer) 读取byte
static byte[]	readBytes(ByteBuffer buffer, int length)
static String	readLine(ByteBuffer buffer, String charset)
static String	readLine(ByteBuffer buffer, String charset, Integer maxlength)
static short	readShort(ByteBuffer buffer) 读取short
static String	readString(ByteBuffer buffer, int length, String charset)
static String	readString(ByteBuffer buffer, String charset, char endChar, Integer maxlength)
static int	readUB1(ByteBuffer buffer)
static int	readUB2(ByteBuffer buffer)
static int	readUB2WithBigEdian(ByteBuffer buffer)
static long	readUB4(ByteBuffer buffer)
static long	readUB4WithBigEdian(ByteBuffer buffer)
static ByteBuffer[]	split(ByteBuffer src, int unitSize)
static void	writeUB2(ByteBuffer buffer, int i)
static void	writeUB2WithBigEdian(ByteBuffer buffer, int i)
static void	writeUB4(ByteBuffer buffer, long l)
static void	writeUB4WithBigEdian(ByteBuffer buffer, long l)

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteBufferUtils

public ByteBufferUtils()

Method Detail

composite

public static ByteBuffer composite(ByteBuffer byteBuffer1,
                                   ByteBuffer byteBuffer2)

组合两个bytebuffer，把可读部分的组合成一个新的bytebuffer

Parameters:

byteBuffer1 -

byteBuffer2 -

Returns:

copy

public static void copy(ByteBuffer src,
                        int srcStartindex,
                        ByteBuffer dest,
                        int destStartIndex,
                        int length)

Parameters:

src -

srcStartindex -

dest -

destStartIndex -

length -

copy

public static ByteBuffer copy(ByteBuffer src,
                              int startindex,
                              int endindex)

Parameters:

src - 本方法不会改变position等指针变量

startindex - 从0开始

endindex -

Returns:

copy

public static ByteBuffer copy(ByteBuffer src)

Parameters:

src - 本方法不会改变position等指针变量

Returns:

split

public static ByteBuffer[] split(ByteBuffer src,
                                 int unitSize)

Parameters:

src -

unitSize - 每个单元的大小

Returns:

如果不需要拆分，则返回null

lineEnd

public static int lineEnd(ByteBuffer buffer)
                   throws LengthOverflowException

Parameters:

buffer -

Returns:

Throws:

LengthOverflowException

lineEnd

public static int lineEnd(ByteBuffer buffer,
                          int maxlength)
                   throws LengthOverflowException

Parameters:

buffer -

maxlength -

Returns:

Throws:

LengthOverflowException

indexOf

public static int indexOf(ByteBuffer buffer,
                          char theChar,
                          int maxlength)
                   throws LengthOverflowException

Parameters:

buffer - position会被移动

theChar - 结束

maxlength -

Returns:

Throws:

LengthOverflowException

readBytes

public static byte[] readBytes(ByteBuffer buffer,
                               int length)

readString

public static String readString(ByteBuffer buffer,
                                int length,
                                String charset)
                         throws UnsupportedEncodingException

Parameters:

buffer -

length -

charset -

Returns:

Throws:

UnsupportedEncodingException

readLine

public static String readLine(ByteBuffer buffer,
                              String charset)
                       throws LengthOverflowException

Parameters:

buffer -

charset -

Returns:

Throws:

LengthOverflowException

readLine

public static String readLine(ByteBuffer buffer,
                              String charset,
                              Integer maxlength)
                       throws LengthOverflowException

Parameters:

buffer -

charset -

maxlength -

Returns:

Throws:

LengthOverflowException

readString

public static String readString(ByteBuffer buffer,
                                String charset,
                                char endChar,
                                Integer maxlength)
                         throws LengthOverflowException

Parameters:

buffer -

charset -

endChar -

maxlength -

Returns:

Throws:

LengthOverflowException

getUtf8

public static String getUtf8(byte[] bytes)

获取utf-8字符串

Parameters:

bytes -

Returns:

read

public static byte read(ByteBuffer buffer)

读取byte

Parameters:

buffer -

Returns:

readShort

public static short readShort(ByteBuffer buffer)

读取short

Parameters:

buffer -

Returns:

readUB1

public static int readUB1(ByteBuffer buffer)

readUB2

public static int readUB2(ByteBuffer buffer)

readUB2WithBigEdian

public static int readUB2WithBigEdian(ByteBuffer buffer)

readUB4

public static long readUB4(ByteBuffer buffer)

readUB4WithBigEdian

public static long readUB4WithBigEdian(ByteBuffer buffer)

writeUB2

public static final void writeUB2(ByteBuffer buffer,
                                  int i)

writeUB2WithBigEdian

public static final void writeUB2WithBigEdian(ByteBuffer buffer,
                                              int i)

writeUB4

public static final void writeUB4(ByteBuffer buffer,
                                  long l)

writeUB4WithBigEdian

public static final void writeUB4WithBigEdian(ByteBuffer buffer,
                                              long l)