net.yagga.util
Class Unzip

java.lang.Object
  |
  +--net.yagga.util.Unzip

public class Unzip

extends java.lang.Object

Unzipper class. It unzipz standrd ZIP files as well as Jar files. It was a hell of a code writing...
THe typical usage is as follows.. Unzip u=new Unzip("archive.zip","/usr/tmp");
u.uncompress(false); //verbose set to false..

Or..if we want to trAck esxtraction..
while((ret=u.chunkuncompress(false,true,true))!=-1){
System.out.println(ret);
}


Author:

Walter Gamba

Field Summary

(package private) java.util.zip.ZipInputStream	chunkzis chunked
private java.util.Vector	createdDirs
(package private) long	currSize
(package private) java.lang.String	destDir
private java.util.Vector	extractedFiles Store here extracted files..
(package private) long	maxSize
(package private) java.lang.String	zipFile

Constructor Summary

Unzip(java.lang.String zFile, java.lang.String dDir)

Method Summary

int	chunkuncompress(boolean verbose, boolean acc, boolean percent) Uncompress file chunked.. so to get track of the progress of the unzipping process
java.util.Vector	getCreatedDirsList()
java.util.Vector	getExtractedFilesList()
long	getMax()
private void	getStats()
private void	getStats2()
private java.util.zip.ZipInputStream	getZIS()
static void	main(java.lang.String[] argv)
void	startChunking()
void	uncompress(boolean verbose) Use this to uncompress in a straight way a ZIP/JAR file
void	uncompress(java.util.zip.ZipEntry _ze, boolean verbose)
private void	writeUncompressedFile(java.util.zip.ZipEntry ze, byte[] buffer, boolean verbose) Actually write an extracted file to file system.

Methods inherited from class java.lang.Object

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

Field Detail

extractedFiles

private java.util.Vector extractedFiles

Store here extracted files..

createdDirs

private java.util.Vector createdDirs

zipFile

java.lang.String zipFile

destDir

java.lang.String destDir

maxSize

long maxSize

currSize

long currSize

chunkzis

java.util.zip.ZipInputStream chunkzis

chunked

Constructor Detail

Unzip

public Unzip(java.lang.String zFile,
             java.lang.String dDir)

Method Detail

main

public static void main(java.lang.String[] argv)

getExtractedFilesList

public java.util.Vector getExtractedFilesList()

Returns:

a Vector of File containing extracted files.

getCreatedDirsList

public java.util.Vector getCreatedDirsList()

Returns:

a Vector of File containing created directories.

getMax

public long getMax()

getStats

private void getStats()

getStats2

private void getStats2()

startChunking

public void startChunking()

uncompress

public void uncompress(java.util.zip.ZipEntry _ze,
                       boolean verbose)

uncompress

public void uncompress(boolean verbose)

Use this to uncompress in a straight way a ZIP/JAR file

Parameters:

verbose - print progress informations

getZIS

private java.util.zip.ZipInputStream getZIS()

chunkuncompress

public int chunkuncompress(boolean verbose,
                           boolean acc,
                           boolean percent)

Uncompress file chunked.. so to get track of the progress of the unzipping process

Parameters:

verbose - display progress info

acc - add size extracted to last size returned..

percent - transform progress values to percent values (if true) or get raw data ifa false

Returns:

return the size of extracted data in bytes.. if percent is true return a percentage returns -1 if there is an error.

writeUncompressedFile

private void writeUncompressedFile(java.util.zip.ZipEntry ze,
                                   byte[] buffer,
                                   boolean verbose)

Actually write an extracted file to file system. Stores created dirs and files in vectors> Such vectors can later be retrieved.

Parameters:

ze - a ZipEntry the file/directory to write

buffer -

verbose -