Package org.jruby.util.io

Class SeekableByteChannelImpl

java.lang.Object

java.nio.channels.spi.AbstractInterruptibleChannel

org.jruby.util.io.SeekableByteChannelImpl

All Implemented Interfaces:

Closeable, AutoCloseable, ByteChannel, Channel, InterruptibleChannel, ReadableByteChannel, SeekableByteChannel, WritableByteChannel

final class SeekableByteChannelImpl
extends AbstractInterruptibleChannel
implements ReadableByteChannel, SeekableByteChannel

Seekable byte channel impl over a byte array stream.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	count
private static final Field	countField
private final ByteArrayInputStream	in
private final int	mark
private static final Field	markField
private static final Field	posField
private int	truncatedBy
(package private) static final boolean	USABLE

Constructor Summary

Constructors

Constructor	Description
SeekableByteChannelImpl(ByteArrayInputStream in)

Method Summary

Modifier and Type	Method	Description
private static Field	accessibleField(String name)
private static int	count(ByteArrayInputStream in)
protected void	implCloseChannel()
private static int	mark(ByteArrayInputStream in)
private static int	pos(ByteArrayInputStream in)
long	position()
SeekableByteChannel	position(long newPosition)
int	read(ByteBuffer target)
private static int	readIntField(ByteArrayInputStream self, Field field)
long	size()
SeekableByteChannel	truncate(long size)
int	write(ByteBuffer src)

Methods inherited from class java.nio.channels.spi.AbstractInterruptibleChannel

begin, close, end, isOpen

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.nio.channels.Channel

isOpen

Field Details

in

private final ByteArrayInputStream in

mark

private final int mark

count

private final int count

truncatedBy

private int truncatedBy

USABLE

static final boolean USABLE

posField

private static final Field posField

countField

private static final Field countField

markField

private static final Field markField

Constructor Details

SeekableByteChannelImpl

SeekableByteChannelImpl(ByteArrayInputStream in)

Method Details

read

public int read(ByteBuffer target)
         throws IOException

Specified by:

read in interface ReadableByteChannel

Specified by:

read in interface SeekableByteChannel

Throws:

IOException

implCloseChannel

protected void implCloseChannel()
                         throws IOException

Specified by:

implCloseChannel in class AbstractInterruptibleChannel

Throws:

IOException

position

public long position()

Specified by:

position in interface SeekableByteChannel

position

public SeekableByteChannel position(long newPosition)
                             throws IOException

Specified by:

position in interface SeekableByteChannel

Throws:

IOException

size

public long size()

Specified by:

size in interface SeekableByteChannel

truncate

public SeekableByteChannel truncate(long size)
                             throws IOException

Specified by:

truncate in interface SeekableByteChannel

Throws:

IOException

write

public int write(ByteBuffer src)
          throws IOException

Specified by:

write in interface SeekableByteChannel

Specified by:

write in interface WritableByteChannel

Throws:

IOException

pos

private static int pos(ByteArrayInputStream in)

count

private static int count(ByteArrayInputStream in)

mark

private static int mark(ByteArrayInputStream in)

readIntField

private static int readIntField(ByteArrayInputStream self,
 Field field)

accessibleField

private static Field accessibleField(String name)