public class OptimizedByteArrayInputStream extends InputStream
| Modifier and Type | Field and Description |
|---|---|
protected byte[] |
_buffer
An array of bytes that was provided
by the creator of the stream.
|
protected int |
_count
The index one greater than the last valid character in the input
stream buffer.
|
protected int |
_position
The index of the next character to read from the input stream buffer.
|
| Constructor and Description |
|---|
OptimizedByteArrayInputStream(byte[] buffer)
Creates a
ByteArrayInputStream
so that it uses buffer 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.
|
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. |
byte |
readByte() |
int |
readUnsignedByte() |
void |
setBuffer(byte[] buffer)
Sets a
GSByteArrayInputStream
so that it uses buffer as its
buffer array. |
long |
skip(long n)
Skips
n bytes of input from this input stream. |
close, mark, markSupported, read, resetprotected byte[] _buffer
buf[0]
through buffer[count-1] are the
only bytes that can ever be read from the
stream; element buffer[pos] is
the next byte to be read.protected int _position
count.
The next byte to be read from the input stream buffer
will be buffer[position].protected int _count
buffer.
It is one greater than the position of
the last byte within buffer that
can ever be read from the input stream buffer.public OptimizedByteArrayInputStream(byte[] buffer)
ByteArrayInputStream
so that it uses buffer 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
buffer.buffer - the input buffer.public void setBuffer(byte[] buffer)
GSByteArrayInputStream
so that it uses buffer 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
buffer.buffer - 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 InputStream-1 if the end of the
stream has been reached.public byte readByte()
public int readUnsignedByte()
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
buffer[pos] through buffer[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 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 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 InputStreamCopyright © GigaSpaces.