pro.fessional.mirana.io

Class CircleInputStream

java.lang.Object

java.io.InputStream

pro.fessional.mirana.io.CircleInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class CircleInputStream
extends InputStream

当读完stream，即-1时，再次read时，自动从头读起，重新available。 特殊需要，非线程安全，谨慎使用，尤其要正确使用mark, reset功能。

Since:

2020-09-25

Author:

trydofor

Field Summary

Fields

Modifier and Type	Field and Description
protected InputStream	backend
protected ByteArrayOutputStream	cache
protected ByteArrayInputStream	circle
protected byte[]	content

Constructor Summary

Constructors

Constructor and Description
CircleInputStream(InputStream backend)

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
boolean	isFinished() 是否本次以读完流(-1)
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(@NotNull byte[] b)
int	read(@NotNull byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.lang.Object

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

Field Detail

backend

protected InputStream backend

cache

protected ByteArrayOutputStream cache

circle

protected ByteArrayInputStream circle

content

protected byte[] content

Constructor Detail

CircleInputStream

public CircleInputStream(InputStream backend)

Method Detail

isFinished

public boolean isFinished()

是否本次以读完流(-1)

Returns:

是否已读完

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(@NotNull
                @NotNull byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(@NotNull
                @NotNull byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream