org.eclipse.jgit.internal.storage.file

Class ByteBufferWindow

java.lang.Object

org.eclipse.jgit.internal.storage.file.ByteWindow

org.eclipse.jgit.internal.storage.file.ByteBufferWindow

final class ByteBufferWindow
extends ByteWindow

A window for accessing git packs using a ByteBuffer for storage.

See Also:

ByteWindow

Field Summary

Fields

Modifier and Type	Field and Description
private java.nio.ByteBuffer	buffer

Fields inherited from class org.eclipse.jgit.internal.storage.file.ByteWindow

end, pack, start

Constructor Summary

Constructors

Constructor and Description
ByteBufferWindow(PackFile pack, long o, java.nio.ByteBuffer b)

Method Summary

Modifier and Type	Method and Description
protected int	copy(int p, byte[] b, int o, int n) Copy bytes from the window to a caller supplied buffer.
protected int	setInput(int pos, java.util.zip.Inflater inf) Set the input
(package private) void	write(PackOutputStream out, long pos, int cnt)

Methods inherited from class org.eclipse.jgit.internal.storage.file.ByteWindow

contains, copy, setInput, size

Methods inherited from class java.lang.Object

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

Field Detail

buffer

private final java.nio.ByteBuffer buffer

Constructor Detail

ByteBufferWindow

ByteBufferWindow(PackFile pack,
                 long o,
                 java.nio.ByteBuffer b)

Method Detail

copy

protected int copy(int p,
                   byte[] b,
                   int o,
                   int n)

Copy bytes from the window to a caller supplied buffer.

Specified by:

copy in class ByteWindow

Parameters:

p - offset within the window to start copying from.

b - destination buffer to copy into.

o - offset within dstbuf to start copying into.

n - number of bytes to copy. This value may exceed the number of bytes remaining in the window starting at offset pos.

Returns:

number of bytes actually copied; this may be less than cnt if cnt exceeded the number of bytes available.

write

void write(PackOutputStream out,
           long pos,
           int cnt)
    throws java.io.IOException

Specified by:

write in class ByteWindow

Throws:

java.io.IOException

setInput

protected int setInput(int pos,
                       java.util.zip.Inflater inf)
                throws java.util.zip.DataFormatException

Set the input

Specified by:

setInput in class ByteWindow

Parameters:

pos - position

inf - an Inflater object.

Returns:

size of the byte window

Throws:

java.util.zip.DataFormatException - if any.