com.aliyun.oss.crypto

Class RenewableCipherInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.aliyun.oss.crypto.SdkFilterInputStream

com.aliyun.oss.crypto.CipherInputStream

com.aliyun.oss.crypto.RenewableCipherInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public final class RenewableCipherInputStream
extends CipherInputStream

A specific kind of CipherInputStream that supports partial mark-and-reset in the sense that, if the underlying input stream supports mark-and-reset, this input stream can then be marked at and get reset back to the very beginning of the stream (but not anywhere else).

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
RenewableCipherInputStream(InputStream is, CryptoCipher cryptoCipher)
RenewableCipherInputStream(InputStream is, CryptoCipher c, int buffsize)

Method Summary

Methods

Modifier and Type	Method and Description
void	mark(int readlimit) Mark and reset is currently only partially supported, in the sense that, if the underlying input stream supports mark-and-reset, this input stream can then be marked at and get reset back to the very beginning of the stream (but not anywhere else).
boolean	markSupported() Mark and reset is currently only partially supported, in the sense that, if the underlying input stream supports mark-and-reset, this input stream can then be marked at and get reset back to the very beginning of the stream (but not anywhere else).
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset() Resets back to the very beginning of the stream.
long	skip(long n) Note: This implementation will only skip up to the end of the buffered data, potentially skipping 0 bytes.

Methods inherited from class com.aliyun.oss.crypto.CipherInputStream

available, close

Methods inherited from class com.aliyun.oss.crypto.SdkFilterInputStream

abort, abortIfNeeded, getDelegateStream, isAborted, release

Methods inherited from class java.lang.Object

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

Constructor Detail

RenewableCipherInputStream

public RenewableCipherInputStream(InputStream is,
                          CryptoCipher cryptoCipher)

RenewableCipherInputStream

public RenewableCipherInputStream(InputStream is,
                          CryptoCipher c,
                          int buffsize)

Method Detail

markSupported

public boolean markSupported()

Mark and reset is currently only partially supported, in the sense that, if the underlying input stream supports mark-and-reset, this input stream can then be marked at and get reset back to the very beginning of the stream (but not anywhere else).

Overrides:

markSupported in class CipherInputStream

mark

public void mark(int readlimit)

Mark and reset is currently only partially supported, in the sense that, if the underlying input stream supports mark-and-reset, this input stream can then be marked at and get reset back to the very beginning of the stream (but not anywhere else).

Overrides:

mark in class CipherInputStream

Throws:

UnsupportedOperationException - if mark is called after this stream has been accessed.

reset

public void reset()
           throws IOException

Resets back to the very beginning of the stream.

Mark and reset is currently only partially supported, in the sense that, if the underlying input stream supports mark-and-reset, this input stream can then be marked at and get reset back to the very beginning of the stream (but not anywhere else).

Overrides:

reset in class CipherInputStream

Throws:

IOException

read

public int read()
         throws IOException

Overrides:

read in class CipherInputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class CipherInputStream

Throws:

IOException

read

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

Overrides:

read in class CipherInputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Description copied from class: CipherInputStream

Note: This implementation will only skip up to the end of the buffered data, potentially skipping 0 bytes.

Overrides:

skip in class CipherInputStream

Throws:

IOException