at.spardat.xma.xdelta
Class JarPatcher

java.lang.Object
  at.spardat.xma.xdelta.JarPatcher

public class JarPatcher
extends Object

This class applys a zip file containing deltas created with JarDelta using GDiffPatcher on the files contained in the jar file. The result of this operation is not binary equal to the original target zip file. Timestamps of files and directories are not reconstructed. But the contents of all files in the reconstructed target zip file are complely equal to their originals.

Author:

s2877

Constructor Summary

JarPatcher()

Method Summary

void	applyDelta(ZipFile source, ZipFile patch, ZipOutputStream output) Applies the differences in patch to source to create the target file.
static void	main(String[] args) Main method to make applyDelta(ZipFile, ZipFile, ZipOutputStream) available at the command line. usage JarPatcher source patch output

Methods inherited from class java.lang.Object

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

Constructor Detail

JarPatcher

public JarPatcher()

Method Detail

applyDelta

public void applyDelta(ZipFile source,
                       ZipFile patch,
                       ZipOutputStream output)
                throws IOException

Applies the differences in patch to source to create the target file. All binary difference files are applied to their corresponding file in source using GDiffPatcher. All other files listed in META-INF/file.list are copied from patch to output.

Parameters:

source - the original zip file, where the patches have to be applied

patch - a zip file created by JarDelta.computeDelta(ZipFile, ZipFile, ZipOutputStream) containing the patches to apply

output - the patched zip file to create

Throws:

IOException - if an error occures reading or writing any entry in a zip file

main

public static void main(String[] args)
                 throws IOException

Main method to make applyDelta(ZipFile, ZipFile, ZipOutputStream) available at the command line.
usage JarPatcher source patch output

Throws:

IOException