public class ForwardSeekableStream extends SeekableStream
SeekableStream
that may be used
to wrap a regular InputStream
efficiently.
Seeking backwards is not supported.markPos
构造器和说明 |
---|
ForwardSeekableStream(InputStream src)
Constructs a
InputStreamForwardSeekableStream from a
regular InputStream . |
限定符和类型 | 方法和说明 |
---|---|
int |
available()
Forwards the request to the real
InputStream . |
boolean |
canSeekBackwards()
Returns
false since seking backwards is not supported. |
void |
close()
Forwards the request to the real
InputStream . |
long |
getFilePointer()
Returns the current position in the stream (bytes read).
|
void |
mark(int readLimit)
Forwards the request to the real
InputStream . |
boolean |
markSupported()
Forwards the request to the real
InputStream . |
int |
read()
Forwards the request to the real
InputStream . |
int |
read(byte[] b,
int off,
int len)
Forwards the request to the real
InputStream . |
void |
reset()
Forwards the request to the real
InputStream . |
void |
seek(long pos)
Seeks forward to the given position in the stream.
|
long |
skip(long n)
Forwards the request to the real
InputStream . |
finalize, readBoolean, readByte, readChar, readCharLE, readDouble, readDoubleLE, readFloat, readFloatLE, readFully, readFully, readInt, readIntLE, readLine, readLong, readLongLE, readShort, readShortLE, readUnsignedByte, readUnsignedInt, readUnsignedIntLE, readUnsignedShort, readUnsignedShortLE, readUTF, skipBytes, wrapInputStream
read
public ForwardSeekableStream(InputStream src)
InputStreamForwardSeekableStream
from a
regular InputStream
.public final int read() throws IOException
InputStream
.read
在类中 SeekableStream
-1
if the end of the
stream is reached.IOException
- if an I/O error occurs.public final int read(byte[] b, int off, int len) throws IOException
InputStream
.read
在类中 SeekableStream
b
- the buffer into which the data is read.off
- the start offset in array b
at which the data is written.len
- the maximum number of bytes to read.-1
if there is no more data because the end of
the stream has been reached.IOException
- if an I/O error occurs.public final long skip(long n) throws IOException
InputStream
.skip
在类中 InputStream
IOException
public final int available() throws IOException
InputStream
.available
在类中 InputStream
IOException
public final void close() throws IOException
InputStream
.close
在接口中 Closeable
close
在接口中 AutoCloseable
close
在类中 InputStream
IOException
public final void mark(int readLimit)
InputStream
.
We use SeekableStream.markPos
mark
在类中 SeekableStream
public final void reset() throws IOException
InputStream
.
We use SeekableStream.markPos
reset
在类中 SeekableStream
IOException
public boolean markSupported()
InputStream
.markSupported
在类中 SeekableStream
public final boolean canSeekBackwards()
false
since seking backwards is not supported.canSeekBackwards
在类中 SeekableStream
public final long getFilePointer()
getFilePointer
在类中 SeekableStream
public final void seek(long pos) throws IOException
pos
is smaller than the current position
as returned by getFilePointer()
, nothing
happens.seek
在类中 SeekableStream
pos
- the offset position, measured in bytes from the
beginning of the stream, at which to set the stream
pointer.IOException
- if pos
is less than
0
or if an I/O error occurs.Copyright 1999-2016 The Apache Software Foundation. All Rights Reserved.