Package software.amazon.awssdk.utils

Class LookaheadInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

software.amazon.awssdk.utils.LookaheadInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class LookaheadInputStream
extends FilterInputStream

A wrapper for an InputStream that allows peek()ing one byte ahead in the stream. This is useful for detecting the end of a stream without actually consuming any data in the process (e.g. so the stream can be passed to another library that doesn't handle end-of-stream as the first byte well).

Constructor Summary

Constructors

Constructor	Description
LookaheadInputStream(InputStream in)

Method Summary

Modifier and Type	Method	Description
int	available()
void	mark(int readlimit)
int	peek()
int	read()
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.FilterInputStream

close, markSupported, read

Methods inherited from class java.lang.Object

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

Constructor Details

LookaheadInputStream

public LookaheadInputStream(InputStream in)

Method Details

peek

public int peek()
         throws IOException

Throws:

IOException

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

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

Overrides:

read in class FilterInputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class FilterInputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class FilterInputStream

Throws:

IOException