public class SplittableInputStream
extends java.io.InputStream
getInputStream(int))
(that also yield the same bytes).| Modifier and Type | Field and Description |
|---|---|
InputStreamBuffer |
inputStreamBuffer |
| Constructor and Description |
|---|
SplittableInputStream(java.io.InputStream inputStream,
int length)
Wraps an input stream so that copy streams can be split off.
|
| Modifier and Type | Method and Description |
|---|---|
int |
available()
Returns an estimate of the number of bytes that can be read (or
skipped over) from this input stream without blocking by the next
invocation of a method for this input stream.
|
void |
close()
Closes this input stream and releases any system resources associated
with the stream.
|
int |
getBytesBuffered() |
java.io.InputStream |
getInputStream(int position)
Gets a copy of the inputstream positioned at
position. |
int |
getLength() |
int |
getPosition()
The position of the input stream (the number of bytes read since this input stream was constructed)
|
void |
mark(int readlimit)
Marks the current position in this input stream.
|
boolean |
markSupported()
Tests if this input stream supports the
mark and
reset methods. |
int |
read()
Reads the next byte of data from the input stream.
|
void |
reset()
Repositions this stream to the position at the time the
mark method was last called on this input stream. |
long |
skip(long n)
Skips over and discards
n bytes of data from this input
stream. |
void |
updateFrom(SplittableInputStream other) |
public InputStreamBuffer inputStreamBuffer
public SplittableInputStream(java.io.InputStream inputStream,
int length)
inputStream - the original input streamlength - the precise length of bytes that the original input stream providespublic void updateFrom(SplittableInputStream other)
public java.io.InputStream getInputStream(int position)
position.position - a position between 0 and getPosition()public int getPosition()
public int read()
throws java.io.IOException
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.read in class java.io.InputStream-1 if the end of the
stream is reached.java.io.IOException - if an I/O error occurs.public long skip(long n)
throws java.io.IOException
n bytes of data from this input
stream. The skip method may, for a variety of reasons, end
up skipping over some smaller number of bytes, possibly 0.
This may result from any of a number of conditions; reaching end of file
before n bytes have been skipped is only one possibility.
The actual number of bytes skipped is returned. If n is
negative, no bytes are skipped.skip in class java.io.InputStreamn - the number of bytes to be skipped.java.io.IOException - if the stream does not support seek, or if some other I/O error occurs.public int available()
throws java.io.IOException
available in class java.io.InputStream0 when
it reaches the end of the input stream.java.io.IOException - on errorpublic void close()
throws java.io.IOException
close in interface java.io.Closeableclose in interface java.lang.AutoCloseableclose in class java.io.InputStreamjava.io.IOException - on errorpublic void mark(int readlimit)
reset method repositions this stream at the last marked
position so that subsequent reads re-read the same bytes.
The readlimit arguments tells this input stream to
allow that many bytes to be read before the mark position gets
invalidated.
The general contract of mark is that, if the method
markSupported returns true, the stream somehow
remembers all the bytes read after the call to mark and
stands ready to supply those same bytes again if and whenever the method
reset is called. However, the stream is not required to
remember any data at all if more than readlimit bytes are
read from the stream before reset is called.
mark in class java.io.InputStreamreadlimit - the maximum limit of bytes that can be read before the mark position becomes invalid.InputStream.reset()public void reset()
throws java.io.IOException
mark method was last called on this input stream.
The general contract of reset is:
markSupported returns
true, then:
mark has not been called since
the stream was created, or the number of bytes read from the stream
since mark was last called is larger than the argument
to mark at that last call, then an
IOException might be thrown.
IOException is not thrown, then the
stream is reset to a state such that all the bytes read since the
most recent call to mark (or since the start of the
file, if mark has not been called) will be resupplied
to subsequent callers of the read method, followed by
any bytes that otherwise would have been the next input data as of
the time of the call to reset. markSupported returns
false, then:
reset may throw an
IOException.
IOException is not thrown, then the stream
is reset to a fixed state that depends on the particular type of the
input stream and how it was created. The bytes that will be supplied
to subsequent callers of the read method depend on the
particular type of the input stream. reset in class java.io.InputStreamjava.io.IOException - if this stream has not been marked or if the mark has been invalidated.java.io.IOException - on errorInputStream.mark(int),
IOExceptionpublic boolean markSupported()
mark and
reset methods. Whether or not mark and
reset are supported is an invariant property of a
particular input stream instance. The markSupported method
of InputStream returns false.markSupported in class java.io.InputStreamtrue if this stream instance supports the mark
and reset methods; false otherwise.InputStream.mark(int),
InputStream.reset()public int getLength()
public int getBytesBuffered()