pl.psnc.dl.ege.utils
Class EGEIOUtils

java.lang.Object
  pl.psnc.dl.ege.utils.EGEIOUtils

public final class EGEIOUtils
extends java.lang.Object

Pack of usable EGE IO utilities. TODO : switch to external IO Utilities (e.g. from Vesta or Apache Commons)

Author:

mariuszs

Method Summary

static void	constructZip(java.io.File file, java.util.zip.ZipOutputStream out, java.lang.String dir) Construct zip file from specified dir location.
static void	copyStream(java.io.InputStream is, java.io.OutputStream os) Perform copy from input stream to output stream.
static boolean	deleteDirectory(java.io.File dir) Deletes a directory.
static boolean	isComplexZip(java.io.File zipFile) Checks if specified zip content contains more than one file.
static void	unzipFile(java.util.zip.ZipFile zipFile, java.io.File destinationDir) Extracts content of the zipFile to given destination directory
static void	unzipSingleFile(java.util.zip.ZipFile zipFile, java.io.OutputStream os) Unpacks single file data to stream.
static void	unzipStream(java.io.InputStream in, java.io.File outputDir) Unzips a zip compressed file to some output directory.

Methods inherited from class java.lang.Object

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

Method Detail

constructZip

public static void constructZip(java.io.File file,
                                java.util.zip.ZipOutputStream out,
                                java.lang.String dir)
                         throws java.io.IOException

Construct zip file from specified dir location. Result is transfered into ZipOutputStream.

Parameters:

file - directory to pack

out - zip output stream

dir - used for zip entries

Throws:

java.io.IOException

deleteDirectory

public static boolean deleteDirectory(java.io.File dir)

Deletes a directory.

Parameters:

dir - The directory to delete

Returns:

Returns true on success.

copyStream

public static void copyStream(java.io.InputStream is,
                              java.io.OutputStream os)
                       throws java.io.IOException

Perform copy from input stream to output stream.

Parameters:

is - source stream

os - result stream

Throws:

java.io.IOException

unzipFile

public static void unzipFile(java.util.zip.ZipFile zipFile,
                             java.io.File destinationDir)
                      throws java.io.FileNotFoundException,
                             java.io.IOException

Extracts content of the zipFile to given destination directory

Parameters:

zipFile - the file to unzip

destinationDir - destination directory for the content of the zipFile

Throws:

java.io.FileNotFoundException - if a file could not be created

java.io.IOException - if IO error occurs

unzipStream

public static void unzipStream(java.io.InputStream in,
                               java.io.File outputDir)
                        throws java.io.FileNotFoundException,
                               java.io.IOException

Unzips a zip compressed file to some output directory.

Parameters:

in - The InputStream.

outputDir - The output directory.

Throws:

java.io.IOException

java.io.FileNotFoundException

isComplexZip

public static boolean isComplexZip(java.io.File zipFile)
                            throws java.io.IOException

Checks if specified zip content contains more than one file.

Parameters:

zipFile -

Returns:

Throws:

java.io.IOException

unzipSingleFile

public static void unzipSingleFile(java.util.zip.ZipFile zipFile,
                                   java.io.OutputStream os)
                            throws java.io.IOException

Unpacks single file data to stream. Should be only used when expecting single file in zip package.

Parameters:

zipFile -

os -

Throws:

java.io.IOException