com.xmlmind.util

Class Zip

java.lang.Object

com.xmlmind.util.Zip

public final class Zip
extends Object

Utility class which makes it easier zipping and unzipping files. Also works for .jar archives.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Zip.Archive This class allows a fine-grained control on the files to be added to the zip archive.

Method Summary

Modifier and Type	Method and Description
static long	computeCRC(File file) Utility: computes and returns the CRC-32 of specified file.
static void	unzip(File srcFile, File dstDir) Extracts files contained in specified stream to specified directory.
static void	unzip(ZipInputStream zip, File dstDir) Extracts file contained in specified stream to specified directory.
static void	zip(File srcDir, boolean includingTopDir, FilenameFilter filter, File dstFile) Creates a zip archive containing the content of specified directory.

Methods inherited from class java.lang.Object

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

Method Detail

zip

public static void zip(File srcDir,
                       boolean includingTopDir,
                       FilenameFilter filter,
                       File dstFile)
                throws IOException

Creates a zip archive containing the content of specified directory.

Parameters:

srcDir - directory containing the files to be zipped. This directory is traversed recursively.

includingTopDir - if true, the basename of the top directory also appears in the created zip archive. Example: if C:\foo\bar is to be zipped and this option is true, all the paths contained in the zip archive will start with "bar/".

filter - may be used to filter the files to be zipped. May be null, in which case, all the files and directory contained in srcDir are to be zipped.

dstFile - zip archive to be created

Throws:

IOException - if there is an I/O problem during the creation of the zip archive

computeCRC

public static final long computeCRC(File file)
                             throws IOException

Utility: computes and returns the CRC-32 of specified file.

Throws:

IOException

unzip

public static void unzip(File srcFile,
                         File dstDir)
                  throws IOException

Extracts files contained in specified stream to specified directory.

Closes input stream when done.

Parameters:

srcFile - source Zip file from which to extract files

dstDir - directory where files are to be extracted

Throws:

IOException - if an I/O problem occurs during the extraction of files

unzip

public static void unzip(ZipInputStream zip,
                         File dstDir)
                  throws IOException

Extracts file contained in specified stream to specified directory.

Does not close zip input stream when done.

Parameters:

zip - zip stream or jar stream from which to extract files

dstDir - directory where files are to be extracted

Throws:

IOException - if an I/O problem occurs during the extraction of files