gov.nih.nci.cagrid.common
Class ZipUtilities

java.lang.Object
  gov.nih.nci.cagrid.common.ZipUtilities

public class ZipUtilities
extends java.lang.Object

ZipUtilities Utilities to maniuplate zip files

Version:

$Id: ZipUtilities.java,v 1.6 2008/01/11 15:49:48 dervin Exp $

Author:

David W. Ervin *

Constructor Summary

ZipUtilities()

Method Summary

static byte[]	extractEntryContents(java.io.File zipFile, java.lang.String entryName) Extracts the contents of a zip file entry to a byte array
static void	insertEntry(java.io.File zipFile, java.lang.String entryName, byte[] data) Inserts an entry in a Zip file.
static void	unzip(java.io.File zip, java.io.File location) Unzips a zip compressed file to a specific directory
static void	unzipInPlace(java.io.File zip) Unzips a zip compressed file in the directory it resides in
static void	zipDirectory(java.io.File dir, java.io.File zipFile) Applies zip compression to a directory and all its contents

Methods inherited from class java.lang.Object

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

Constructor Detail

ZipUtilities

public ZipUtilities()

Method Detail

unzip

public static void unzip(java.io.File zip,
                         java.io.File location)
                  throws java.io.IOException

Unzips a zip compressed file to a specific directory

Parameters:

zip - The zip compressed file

location - The location to unzip into

Throws:

java.io.IOException

unzipInPlace

public static void unzipInPlace(java.io.File zip)
                         throws java.io.IOException

Unzips a zip compressed file in the directory it resides in

Parameters:

zip - The zip compressed file

Throws:

java.io.IOException

zipDirectory

public static void zipDirectory(java.io.File dir,
                                java.io.File zipFile)
                         throws java.io.IOException

Applies zip compression to a directory and all its contents

Parameters:

dir - The directory to compress

zipFile - The file to create the zip archive in

Throws:

java.io.IOException

extractEntryContents

public static byte[] extractEntryContents(java.io.File zipFile,
                                          java.lang.String entryName)
                                   throws java.io.IOException

Extracts the contents of a zip file entry to a byte array

Parameters:

zipFile - The zip file

entryName - The name of the entry to extract

Returns:

A byte array containing the (uncompressed) contents of the entry

Throws:

java.io.IOException

insertEntry

public static void insertEntry(java.io.File zipFile,
                               java.lang.String entryName,
                               byte[] data)
                        throws java.io.IOException

Inserts an entry in a Zip file. If an entry with the given name is found, it will be replaced with the new one.

Parameters:

zipFile - The zip file to be appended

entryName - The name of the new entry

data - The data to add to the zip

Throws:

java.io.IOException