com.tencent.cos.xml.crypto

类 RenewableCipherLiteInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.tencent.cos.xml.crypto.SdkFilterInputStream

com.tencent.cos.xml.crypto.CipherLiteInputStream

com.tencent.cos.xml.crypto.RenewableCipherLiteInputStream

所有已实现的接口:

Releasable, java.io.Closeable, java.lang.AutoCloseable

public final class RenewableCipherLiteInputStream
extends CipherLiteInputStream

A specific kind of CipherLiteInputStream 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).

字段概要

从类继承的字段 java.io.FilterInputStream

in

构造器概要

构造器

限定符	构造器和说明
protected	RenewableCipherLiteInputStream(java.io.InputStream is)
	RenewableCipherLiteInputStream(java.io.InputStream is, com.tencent.cos.xml.crypto.CipherLite cipherLite)
	RenewableCipherLiteInputStream(java.io.InputStream is, com.tencent.cos.xml.crypto.CipherLite c, int buffsize)
	RenewableCipherLiteInputStream(java.io.InputStream is, com.tencent.cos.xml.crypto.CipherLite c, int buffsize, boolean multipart, boolean lastMultiPart)

方法概要

限定符和类型	方法和说明
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() Reads the next byte of data from this input stream.
int	read(byte[] b) Reads up to byte.length bytes of data from this input stream into an array of bytes.
int	read(byte[] b, int off, int len) Reads up to len bytes of data from this input stream into an array of bytes.
void	reset() Resets back to the very beginning of the stream.
long	skip(long n) Skips over and discards n bytes of data from the input stream.

从类继承的方法 com.tencent.cos.xml.crypto.CipherLiteInputStream

available, close

从类继承的方法 com.tencent.cos.xml.crypto.SdkFilterInputStream

abort, abortIfNeeded, isAborted, release

从类继承的方法 java.lang.Object

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

构造器详细资料

RenewableCipherLiteInputStream

public RenewableCipherLiteInputStream(java.io.InputStream is,
                                      com.tencent.cos.xml.crypto.CipherLite cipherLite)

RenewableCipherLiteInputStream

public RenewableCipherLiteInputStream(java.io.InputStream is,
                                      com.tencent.cos.xml.crypto.CipherLite c,
                                      int buffsize)

RenewableCipherLiteInputStream

public RenewableCipherLiteInputStream(java.io.InputStream is,
                                      com.tencent.cos.xml.crypto.CipherLite c,
                                      int buffsize,
                                      boolean multipart,
                                      boolean lastMultiPart)

RenewableCipherLiteInputStream

protected RenewableCipherLiteInputStream(java.io.InputStream is)

方法详细资料

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).

覆盖:

markSupported 在类中 CipherLiteInputStream

返回:

true if this stream type supports the mark and reset method; false otherwise.

另请参阅:

FilterInputStream.in, InputStream.mark(int), InputStream.reset()

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).

覆盖:

mark 在类中 CipherLiteInputStream

参数:

readlimit - the maximum limit of bytes that can be read before the mark position becomes invalid.

抛出:

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

另请参阅:

FilterInputStream.in, FilterInputStream.reset()

reset

public void reset()
           throws java.io.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).

覆盖:

reset 在类中 CipherLiteInputStream

抛出:

java.io.IOException - if the stream has not been marked or if the mark has been invalidated.

另请参阅:

FilterInputStream.in, FilterInputStream.mark(int)

read

public int read()
         throws java.io.IOException

从类复制的说明: java.io.FilterInputStream

Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

This method simply performs in.read() and returns the result.

覆盖:

read 在类中 CipherLiteInputStream

返回:

the next byte of data, or -1 if the end of the stream is reached.

抛出:

java.io.IOException - if an I/O error occurs.

另请参阅:

FilterInputStream.in

read

public int read(byte[] b)
         throws java.io.IOException

从类复制的说明: java.io.FilterInputStream

Reads up to byte.length bytes of data from this input stream into an array of bytes. This method blocks until some input is available.

This method simply performs the call read(b, 0, b.length) and returns the result. It is important that it does not do in.read(b) instead; certain subclasses of FilterInputStream depend on the implementation strategy actually used.

覆盖:

read 在类中 CipherLiteInputStream

参数:

b - the buffer into which the data is read.

返回:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

抛出:

java.io.IOException - if an I/O error occurs.

另请参阅:

FilterInputStream.read(byte[], int, int)

read

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

从类复制的说明: java.io.FilterInputStream

Reads up to len bytes of data from this input stream into an array of bytes. If len is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0 is returned.

This method simply performs in.read(b, off, len) and returns the result.

覆盖:

read 在类中 CipherLiteInputStream

参数:

b - the buffer into which the data is read.

off - the start offset in the destination array b

len - the maximum number of bytes read.

返回:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

抛出:

java.io.IOException - if an I/O error occurs.

另请参阅:

FilterInputStream.in

skip

public long skip(long n)
          throws java.io.IOException

从类复制的说明: java.io.FilterInputStream

Skips over and discards n bytes of data from the input stream. The skip method may, for a variety of reasons, end up skipping over some smaller number of bytes, possibly 0. The actual number of bytes skipped is returned.

This method simply performs in.skip(n).

覆盖:

skip 在类中 CipherLiteInputStream

参数:

n - the number of bytes to be skipped.

返回:

the actual number of bytes skipped.

抛出:

java.io.IOException - if the stream does not support seek, or if some other I/O error occurs.