icy.util

Class ZipUtil

java.lang.Object

icy.util.ZipUtil

public class ZipUtil
extends java.lang.Object

Author:

Stephane

Constructor Summary

Constructors

Constructor and Description
ZipUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	extract(java.lang.String zipFile) Extract the specified zip file in to default location.
static boolean	extract(java.lang.String zipFile, java.lang.String outputDirectory) Extract the specified zip file to the specified destination directory.
static void	isValid(java.lang.String zipFile) Verify that specified file is a valid ZIP file
static boolean	isValid(java.lang.String zipFile, boolean showError) Verify that specified file is a valid ZIP file
static byte[]	pack(byte[] rawData) Compress the specified array of byte and return packed data
static byte[]	pack(java.util.zip.Deflater packer, byte[] rawData, int level) Compress the specified array of byte with given level of compression and return packed data.
static byte[]	unpack(byte[] packedData) Uncompress the specified array of byte and return unpacked data
static byte[]	unpack(java.util.zip.Inflater unpacker, byte[] packedData) Uncompress the specified array of byte and return unpacked data

Methods inherited from class java.lang.Object

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

Constructor Detail

ZipUtil

public ZipUtil()

Method Detail

pack

public static byte[] pack(java.util.zip.Deflater packer,
          byte[] rawData,
          int level)

Compress the specified array of byte with given level of compression and return packed data.

Parameters:

packer - the packer object, can be null in which case we create a new Deflater object

rawData - raw data to compress

level - level of compression where 0 is low and 9 is high (use -1 to keep current / use default level)

pack

public static byte[] pack(byte[] rawData)

Compress the specified array of byte and return packed data

unpack

public static byte[] unpack(java.util.zip.Inflater unpacker,
            byte[] packedData)
                     throws java.util.zip.DataFormatException

Uncompress the specified array of byte and return unpacked data

Parameters:

unpacker - the unpacker object, can be null in which case we create a new Inflater object

packedData - packed data to uncompress

Throws:

java.util.zip.DataFormatException

unpack

public static byte[] unpack(byte[] packedData)
                     throws java.util.zip.DataFormatException

Uncompress the specified array of byte and return unpacked data

Throws:

java.util.zip.DataFormatException

extract

public static boolean extract(java.lang.String zipFile,
              java.lang.String outputDirectory)

Extract the specified zip file to the specified destination directory.

Parameters:

zipFile - input zip file name

outputDirectory - output directory name

Returns:

true if file was correctly extracted, false otherwise

extract

public static boolean extract(java.lang.String zipFile)

Extract the specified zip file in to default location.

Parameters:

zipFile - input zip file name

Returns:

true if file was correctly extracted, false otherwise

isValid

public static void isValid(java.lang.String zipFile)
                    throws java.io.IOException

Verify that specified file is a valid ZIP file

Parameters:

zipFile - input zip file name

Throws:

java.io.IOException - if the input file is not a valid zip file.

isValid

public static boolean isValid(java.lang.String zipFile,
              boolean showError)

Verify that specified file is a valid ZIP file

Parameters:

zipFile - input zip file name

showError - indicate if the method should show the error (in the output console) if the verify operation failed.

Returns:

true if the specified file is a valid ZIP file