io.sigpipe.jbsdiff

Class Diff

java.lang.Object

io.sigpipe.jbsdiff.Diff

public class Diff
extends Object

This class provides functionality for generating bsdiff patches from two source files (an old and new file). Using the differences between the old and new files, a bsdiff patch can be applied to an old file to generate a copy of the new file.

Author:

malensek

Constructor Summary

Constructors

Constructor and Description
Diff()

Method Summary

Modifier and Type	Method and Description
static void	diff(byte[] oldBytes, byte[] newBytes, OutputStream out) Using two different versions of a file, generate a bsdiff patch that can be applied to the old file to create the new file.
static void	diff(byte[] oldBytes, byte[] newBytes, OutputStream out, DiffSettings settings) Using two different versions of a file, generate a bsdiff patch that can be applied to the old file to create the new file.

Methods inherited from class java.lang.Object

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

Constructor Detail

Diff

public Diff()

Method Detail

diff

public static void diff(byte[] oldBytes,
                        byte[] newBytes,
                        OutputStream out)
                 throws org.apache.commons.compress.compressors.CompressorException,
                        InvalidHeaderException,
                        IOException

Using two different versions of a file, generate a bsdiff patch that can be applied to the old file to create the new file. Uses the default bzip2 compression algorithm.

Parameters:

oldBytes - The original ('old') state of the file/binary.

newBytes - New state of the file/binary that will be compared to create a patch file

out - An OutputStream to write the patch file to

Throws:

org.apache.commons.compress.compressors.CompressorException - when a compression error occurs.

InvalidHeaderException - when the bsdiff header is malformed or not present.

IOException - when an error occurs writing the bsdiff control blocks.

diff

public static void diff(byte[] oldBytes,
                        byte[] newBytes,
                        OutputStream out,
                        DiffSettings settings)
                 throws org.apache.commons.compress.compressors.CompressorException,
                        InvalidHeaderException,
                        IOException

Using two different versions of a file, generate a bsdiff patch that can be applied to the old file to create the new file.

Parameters:

oldBytes - The original ('old') state of the file/binary.

newBytes - New state of the file/binary that will be compared to create a patch file

out - An OutputStream to write the patch file to

settings - A DiffSettings implementation, which defines the compression and suffix sort algorithms to create the patch with.

Throws:

org.apache.commons.compress.compressors.CompressorException - when a compression error occurs.

InvalidHeaderException - when the bsdiff header is malformed or not present.

IOException - when an error occurs writing the bsdiff control blocks.