public class ByteDoubleArrayInputStream
extends java.io.InputStream
| Modifier and Type | Field and Description |
|---|---|
protected byte[][] |
buf
An array of bytes that was provided
by the creator of the stream.
|
protected int[] |
bufOffset |
protected int |
count
The index one greater than the last valid character in the input
stream buffer.
|
protected int |
mark
The currently marked position in the stream.
|
protected int |
markIndex |
protected int |
pos
The index of the next character to read from the input stream buffer.
|
protected int |
posIndex |
| Constructor and Description |
|---|
ByteDoubleArrayInputStream(byte[][] buf)
Creates a
ByteArrayInputStream
so that it uses buf as its
buffer array. |
| Modifier and Type | Method and Description |
|---|---|
int |
available()
Returns the number of bytes that can be read from this input
stream without blocking.
|
void |
close()
Closing a ByteArrayInputStream has no effect.
|
void |
mark(int readAheadLimit)
Set the current marked position in the stream.
|
boolean |
markSupported()
Tests if this
InputStream supports mark/reset. |
int |
read()
Reads the next byte of data from this input stream.
|
int |
read(byte[] b,
int off,
int len)
Reads up to
len bytes of data into an array of bytes
from this input stream. |
void |
reset()
Resets the buffer to the marked position.
|
long |
skip(long n)
Skips
n bytes of input from this input stream. |
protected byte[][] buf
buf[0]
through buf[count-1] are the
only bytes that can ever be read from the
stream; element buf[pos] is
the next byte to be read.protected int[] bufOffset
protected int pos
count.
The next byte to be read from the input stream buffer
will be buf[pos].protected int posIndex
protected int mark
mark() method.
The current buffer position is set to this point by the
reset() method.
If no mark has been set, then the value of mark is the offset
passed to the constructor (or 0 if the offset was not supplied).protected int markIndex
protected int count
buf.
It is one greater than the position of
the last byte within buf that
can ever be read from the input stream buffer.public ByteDoubleArrayInputStream(byte[][] buf)
ByteArrayInputStream
so that it uses buf as its
buffer array.
The buffer array is not copied.
The initial value of pos
is 0 and the initial value
of count is the length of
buf.buf - the input buffer.public int read()
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 read method
cannot block.read in class java.io.InputStream-1 if the end of the
stream has been reached.public int read(byte[] b,
int off,
int len)
len bytes of data into an array of bytes
from this input stream.
If pos equals count,
then -1 is returned to indicate
end of file. Otherwise, the number k
of bytes read is equal to the smaller of
len and count-pos.
If k is positive, then bytes
buf[pos] through buf[pos+k-1]
are copied into b[off] through
b[off+k-1] in the manner performed
by System.arraycopy. The
value k is added into pos
and k is returned.
This read method cannot block.read in class java.io.InputStreamb - the buffer into which the data is read.off - the start offset of the data.len - the maximum number of bytes read.-1 if there is no more data because the end of
the stream has been reached.public long skip(long n)
n bytes of input from this input stream. Fewer
bytes might be skipped if the end of the input stream is reached.
The actual number k
of bytes to be skipped is equal to the smaller
of n and count-pos.
The value k is added into pos
and k is returned.skip in class java.io.InputStreamn - the number of bytes to be skipped.public int available()
count - pos,
which is the number of bytes remaining to be read from the input buffer.available in class java.io.InputStreampublic boolean markSupported()
InputStream supports mark/reset. The
markSupported method of ByteArrayInputStream
always returns true.markSupported in class java.io.InputStreampublic void mark(int readAheadLimit)
Note: The readAheadLimit for this class
has no meaning.
mark in class java.io.InputStreampublic void reset()
reset in class java.io.InputStreampublic void close()
throws java.io.IOException
close in interface java.io.Closeableclose in interface java.lang.AutoCloseableclose in class java.io.InputStreamjava.io.IOException