Package org.aoju.bus.core.toolkit

Class BufferKit

java.lang.Object

org.aoju.bus.core.toolkit.BufferKit

public class BufferKit
extends Object

ByteBuffer 工具类 此工具来自于 t-io 项目以及其它项目的相关部分收集 ByteBuffer的相关介绍见：https://www.cnblogs.com/ruber/p/6857159.html

Since:

Java 17+

Author:

Kimi Liu

Constructor Summary

Constructors

Constructor	Description
BufferKit()

Method Summary

Modifier and Type	Method	Description
static ByteBuffer	copy(ByteBuffer src, int start, int end)	拷贝到一个新的ByteBuffer
static ByteBuffer	copy(ByteBuffer src, int srcStart, ByteBuffer dest, int destStart, int length)	拷贝ByteBuffer
static ByteBuffer	copy(ByteBuffer src, ByteBuffer dest)	拷贝ByteBuffer
static ByteBuffer	copy(ByteBuffer src, ByteBuffer dest, int length)	拷贝ByteBuffer
static ByteBuffer	create(byte[] data)	创建新Buffer
static ByteBuffer	create(CharSequence data)	从字符串创建新Buffer，使用UTF-8编码
static ByteBuffer	create(CharSequence data, Charset charset)	从字符串创建新Buffer
static CharBuffer	createCharBuffer(int capacity)	创建CharBuffer
static boolean	isValidUTF8(ByteBuffer data, int off)	检查提供的BytebBuffer是否包含有效的utf8编码字符串
static int	lineEnd(ByteBuffer buffer)	一行的末尾位置,查找位置时位移ByteBuffer到结束位置
static int	lineEnd(ByteBuffer buffer, int maxLength)	一行的末尾位置,查找位置时位移ByteBuffer到结束位置 支持的换行符如下：
static byte[]	readBytes(ByteBuffer buffer)	读取剩余部分bytes
static byte[]	readBytes(ByteBuffer buffer, int maxLength)	读取指定长度的bytes 如果长度不足,则读取剩余部分,此时buffer必须为读模式
static byte[]	readBytes(ByteBuffer buffer, int start, int end)	读取指定区间的数据
static String	readLine(ByteBuffer buffer)	将字节内容解码为新的字符
static String	readLine(ByteBuffer buffer, Charset charset)	读取一行,如果buffer中最后一部分并非完整一行,则返回null 支持的换行符如下：

Methods inherited from class java.lang.Object

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

Constructor Details

BufferKit

public BufferKit()

Method Details

copy

public static ByteBuffer copy(ByteBuffer src,
 int start,
 int end)

拷贝到一个新的ByteBuffer

Parameters:

src - 源ByteBuffer

start - 起始位置(包括)

end - 结束位置(不包括)

Returns:

新的ByteBuffer

copy

public static ByteBuffer copy(ByteBuffer src,
 ByteBuffer dest)

拷贝ByteBuffer

Parameters:

src - 源ByteBuffer

dest - 目标ByteBuffer

Returns:

目标ByteBuffer

copy

public static ByteBuffer copy(ByteBuffer src,
 ByteBuffer dest,
 int length)

拷贝ByteBuffer

Parameters:

src - 源ByteBuffer

dest - 目标ByteBuffer

length - 长度

Returns:

目标ByteBuffer

copy

public static ByteBuffer copy(ByteBuffer src,
 int srcStart,
 ByteBuffer dest,
 int destStart,
 int length)

拷贝ByteBuffer

Parameters:

src - 源ByteBuffer

srcStart - 源开始的位置

dest - 目标ByteBuffer

destStart - 目标开始的位置

length - 长度

Returns:

目标ByteBuffer

readBytes

public static byte[] readBytes(ByteBuffer buffer)

读取剩余部分bytes

Parameters:

buffer - ByteBuffer

Returns:

bytes

readBytes

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

读取指定长度的bytes 如果长度不足,则读取剩余部分,此时buffer必须为读模式

Parameters:

buffer - ByteBuffer

maxLength - 最大长度

Returns:

bytes

readBytes

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

读取指定区间的数据

Parameters:

buffer - ByteBuffer

start - 开始位置

end - 结束位置

Returns:

bytes

lineEnd

public static int lineEnd(ByteBuffer buffer)

一行的末尾位置,查找位置时位移ByteBuffer到结束位置

Parameters:

buffer - ByteBuffer

Returns:

末尾位置, 未找到或达到最大长度返回-1

lineEnd

public static int lineEnd(ByteBuffer buffer,
 int maxLength)

一行的末尾位置,查找位置时位移ByteBuffer到结束位置 支持的换行符如下：

 1. \r\n
 2. \n
 

Parameters:

buffer - ByteBuffer

maxLength - 读取最大长度

Returns:

末尾位置, 未找到或达到最大长度返回-1

readLine

public static String readLine(ByteBuffer buffer,
 Charset charset)

读取一行,如果buffer中最后一部分并非完整一行,则返回null 支持的换行符如下：

 1. \r\n
 2. \n
 

Parameters:

buffer - ByteBuffer

charset - 编码

Returns:

一行

readLine

public static String readLine(ByteBuffer buffer)

将字节内容解码为新的字符

Parameters:

buffer - ByteBuffer

Returns:

解码后的字符串信息

create

public static ByteBuffer create(byte[] data)

创建新Buffer

Parameters:

data - 数据

Returns:

ByteBuffer

create

public static ByteBuffer create(CharSequence data)

从字符串创建新Buffer，使用UTF-8编码

Parameters:

data - 数据

Returns:

ByteBuffer

create

public static ByteBuffer create(CharSequence data,
 Charset charset)

从字符串创建新Buffer

Parameters:

data - 数据

charset - 编码

Returns:

ByteBuffer

isValidUTF8

public static boolean isValidUTF8(ByteBuffer data,
 int off)

检查提供的BytebBuffer是否包含有效的utf8编码字符串

Parameters:

data - the ByteBuffer

off - 偏移量(出于性能原因)

Returns:

字节缓冲区是否包含一个有效的utf8编码字符串

createCharBuffer

public static CharBuffer createCharBuffer(int capacity)

创建CharBuffer

Parameters:

capacity - 容量

Returns:

CharBuffer