Package org.miaixz.bus.core.io

Class FastStringReader

java.lang.Object

java.io.Reader

org.miaixz.bus.core.io.FastStringReader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class FastStringReader
extends Reader

快速字符串读取，相比jdk的StringReader非线程安全，速度更快。

Since:

Java 17+

Author:

Kimi Liu

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor	Description
FastStringReader(String s)	构造

Method Summary

Modifier and Type	Method	Description
void	close()
void	mark(int readAheadLimit)
boolean	markSupported()
int	read()	读取单个字符
int	read(char[] charBuffer, int off, int len)	将多个字符读取到提供的字符数组中
boolean	ready()
void	reset()
long	skip(long ns)	跳过指定长度，返回跳过的字符数。

Methods inherited from class java.io.Reader

nullReader, read, read, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

FastStringReader

public FastStringReader(String s)

构造

Parameters:

s - 供读取的String

Method Details

read

public int read()
         throws IOException

读取单个字符

Overrides:

read in class Reader

Returns:

读取的字符, -1表示读取结束

Throws:

IOException - IO异常

read

public int read(char[] charBuffer,
 int off,
 int len)
         throws IOException

将多个字符读取到提供的字符数组中

Specified by:

read in class Reader

Parameters:

charBuffer - 目标buffer

off - 开始位置

len - 读取最大长度

Returns:

读取的字符长度, -1表示读取到了末尾

Throws:

IOException - IO异常

skip

public long skip(long ns)
          throws IOException

跳过指定长度，返回跳过的字符数。

ns 参数可能为负数, 负数表示向前跳过，跳到开头则停止

如果字符串所有字符被读取或跳过, 此方法无效，始终返回0.

Overrides:

skip in class Reader

Throws:

IOException - IO异常

ready

public boolean ready()
              throws IOException

Overrides:

ready in class Reader

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class Reader

mark

public void mark(int readAheadLimit)
          throws IOException

Overrides:

mark in class Reader

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class Reader

Throws:

IOException

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class Reader