net.lingala.zip4j

Class ZipFile

java.lang.Object

net.lingala.zip4j.ZipFile

public class ZipFile
extends Object

Base class to handle zip files. Some of the operations supported in this class are:

• Create Zip File
• Add files to zip file
• Add folder to zip file
• Extract files from zip files
• Remove files from zip file

Constructor Summary

Constructors

Constructor and Description
ZipFile(File zipFile) Creates a new Zip File Object with the input file.
ZipFile(File zipFile, char[] password)
ZipFile(String zipFile) Creates a new ZipFile instance with the zip file at the location specified in zipFile.
ZipFile(String zipFile, char[] password) Creates a new ZipFile instance with the zip file at the location specified in zipFile.

Method Summary

Modifier and Type	Method and Description
void	addFile(File fileToAdd) Adds input source file to the zip file with default zip parameters.
void	addFile(File fileToAdd, ZipParameters parameters) Adds input source file to the zip file.
void	addFile(String fileToAdd) Adds input source file to the zip file with default zip parameters.
void	addFile(String fileToAdd, ZipParameters zipParameters) Adds input source file to the zip file with provided zip parameters.
void	addFiles(List<File> filesToAdd) Adds the list of input files to the zip file with default zip parameters.
void	addFiles(List<File> filesToAdd, ZipParameters parameters) Adds the list of input files to the zip file.
void	addFolder(File folderToAdd) Adds the folder in the given file object to the zip file with default zip parameters.
void	addFolder(File folderToAdd, ZipParameters zipParameters) Adds the folder in the given file object to the zip file.
void	addStream(InputStream inputStream, ZipParameters parameters) Creates a new entry in the zip file and adds the content of the input stream to the zip file.
void	createSplitZipFile(List<File> filesToAdd, ZipParameters parameters, boolean splitArchive, long splitLength) Creates a zip file and adds the list of source file(s) to the zip file.
void	createSplitZipFileFromFolder(File folderToAdd, ZipParameters parameters, boolean splitArchive, long splitLength) Creates a zip file and adds the files/folders from the specified folder to the zip file.
void	extractAll(String destinationPath) Extracts all the files in the given zip file to the input destination path.
void	extractFile(FileHeader fileHeader, String destinationPath) Extracts a specific file from the zip file to the destination path.
void	extractFile(FileHeader fileHeader, String destinationPath, String newFileName) Extracts a specific file from the zip file to the destination path.
void	extractFile(String fileName, String destinationPath) Extracts a specific file from the zip file to the destination path.
void	extractFile(String fileName, String destinationPath, String newFileName) Extracts a specific file from the zip file to the destination path.
Charset	getCharset()
String	getComment() Returns the comment set for the Zip file
File	getFile()
FileHeader	getFileHeader(String fileName) Returns FileHeader if a file header with the given fileHeader string exists in the zip model: If not returns null
List<FileHeader>	getFileHeaders() Returns the list of file headers in the zip file.
ZipInputStream	getInputStream(FileHeader fileHeader) Returns an input stream for reading the contents of the Zip file corresponding to the input FileHeader.
ProgressMonitor	getProgressMonitor()
List<File>	getSplitZipFiles() Returns the full file path+names of all split zip files in an ArrayList.
boolean	isEncrypted() Checks to see if the zip file is encrypted
boolean	isRunInThread()
boolean	isSplitArchive() Checks if the zip file is a split archive
boolean	isValidZipFile() Checks to see if the input zip file is a valid zip file.
void	mergeSplitFiles(File outputZipFile) Merges split zip files into a single zip file without the need to extract the files in the archive
void	removeFile(FileHeader fileHeader) Removes the file provided in the input file header from the zip file.
void	removeFile(String fileName) Removes the file provided in the input parameters from the zip file.
void	setCharset(Charset charset)
void	setComment(String comment) Sets comment for the Zip file
void	setPassword(char[] password) Sets a password to be used for the zip file.
void	setRunInThread(boolean runInThread)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ZipFile

public ZipFile(String zipFile)

Creates a new ZipFile instance with the zip file at the location specified in zipFile. This constructor does not yet create a zip file if it does not exist. Creation happens when adding files to this ZipFile instance

Parameters:

zipFile -

ZipFile

public ZipFile(String zipFile,
               char[] password)

Creates a new ZipFile instance with the zip file at the location specified in zipFile. Input password will be used for any zip operations like adding files or extracting files. This constructor does not yet create a zip file if it does not exist. Creation happens when adding files to this ZipFile instance

Parameters:

zipFile -

ZipFile

public ZipFile(File zipFile)

Creates a new Zip File Object with the input file. If the zip file does not exist, it is not created at this point.

Parameters:

zipFile -

ZipFile

public ZipFile(File zipFile,
               char[] password)

Method Detail

createSplitZipFile

public void createSplitZipFile(List<File> filesToAdd,
                               ZipParameters parameters,
                               boolean splitArchive,
                               long splitLength)
                        throws ZipException

Creates a zip file and adds the list of source file(s) to the zip file. If the zip file exists then this method throws an exception. Parameters such as compression type, etc can be set in the input parameters. While the method addFile/addFiles also creates the zip file if it does not exist, the main functionality of this method is to create a split zip file. To create a split zip file, set the splitArchive parameter to true with a valid splitLength. Split Length has to be more than 65536 bytes

Parameters:

filesToAdd - - File to be added to the zip file

parameters - - zip parameters for this file list

splitArchive - - if archive has to be split or not

splitLength - - if archive has to be split, then length in bytes at which it has to be split

Throws:

ZipException

createSplitZipFileFromFolder

public void createSplitZipFileFromFolder(File folderToAdd,
                                         ZipParameters parameters,
                                         boolean splitArchive,
                                         long splitLength)
                                  throws ZipException

Creates a zip file and adds the files/folders from the specified folder to the zip file. This method does the same functionality as in addFolder method except that this method can also create split zip files when adding a folder. To create a split zip file, set the splitArchive parameter to true and specify the splitLength. Split length has to be more than or equal to 65536 bytes. Note that this method throws an exception if the zip file already exists.

Parameters:

folderToAdd -

parameters -

splitArchive -

splitLength -

Throws:

ZipException

addFile

public void addFile(String fileToAdd)
             throws ZipException

Adds input source file to the zip file with default zip parameters. If zip file does not exist, this method creates a new zip file.

Parameters:

fileToAdd - - File with path to be added to the zip file

Throws:

ZipException

addFile

public void addFile(String fileToAdd,
                    ZipParameters zipParameters)
             throws ZipException

Adds input source file to the zip file with provided zip parameters. If zip file does not exist, this method creates a new zip file.

Parameters:

fileToAdd - - File with path to be added to the zip file

zipParameters - - parameters for the entry to be added to zip

Throws:

ZipException

addFile

public void addFile(File fileToAdd)
             throws ZipException

Adds input source file to the zip file with default zip parameters. If zip file does not exist, this method creates a new zip file.

Parameters:

fileToAdd - - File to be added to the zip file

Throws:

ZipException

addFile

public void addFile(File fileToAdd,
                    ZipParameters parameters)
             throws ZipException

Adds input source file to the zip file. If zip file does not exist, this method creates a new zip file. Parameters such as compression type, etc can be set in the input parameters.

Parameters:

fileToAdd - - File to be added to the zip file

parameters - - zip parameters for this file

Throws:

ZipException

addFiles

public void addFiles(List<File> filesToAdd)
              throws ZipException

Adds the list of input files to the zip file with default zip parameters. If zip file does not exist, this method creates a new zip file.

Parameters:

filesToAdd -

Throws:

ZipException

addFiles

public void addFiles(List<File> filesToAdd,
                     ZipParameters parameters)
              throws ZipException

Adds the list of input files to the zip file. If zip file does not exist, then this method creates a new zip file. Parameters such as compression type, etc can be set in the input parameters.

Parameters:

filesToAdd -

parameters -

Throws:

ZipException

addFolder

public void addFolder(File folderToAdd)
               throws ZipException

Adds the folder in the given file object to the zip file with default zip parameters. If zip file does not exist, then a new zip file is created. If input folder is invalid then an exception is thrown.

Parameters:

folderToAdd -

Throws:

ZipException

addFolder

public void addFolder(File folderToAdd,
                      ZipParameters zipParameters)
               throws ZipException

Adds the folder in the given file object to the zip file. If zip file does not exist, then a new zip file is created. If input folder is invalid then an exception is thrown. Zip parameters for the files in the folder to be added can be set in the input parameters

Parameters:

folderToAdd -

zipParameters -

Throws:

ZipException

addStream

public void addStream(InputStream inputStream,
                      ZipParameters parameters)
               throws ZipException

Creates a new entry in the zip file and adds the content of the input stream to the zip file. ZipParameters.isSourceExternalStream and ZipParameters.fileNameInZip have to be set before in the input parameters. If the file name ends with / or \, this method treats the content as a directory. Setting the flag ProgressMonitor.setRunInThread to true will have no effect for this method and hence this method cannot be used to add content to zip in thread mode

Parameters:

inputStream -

parameters -

Throws:

ZipException

extractAll

public void extractAll(String destinationPath)
                throws ZipException

Extracts all the files in the given zip file to the input destination path. If zip file does not exist or destination path is invalid then an exception is thrown.

Parameters:

destinationPath -

Throws:

ZipException

extractFile

public void extractFile(FileHeader fileHeader,
                        String destinationPath)
                 throws ZipException

Extracts a specific file from the zip file to the destination path. If destination path is invalid, then this method throws an exception.

If newFileName is not null or empty, newly created file name will be replaced by the value in newFileName. If this value is null, then the file name will be the value in FileHeader.getFileName

Parameters:

fileHeader -

destinationPath -

Throws:

ZipException

extractFile

public void extractFile(FileHeader fileHeader,
                        String destinationPath,
                        String newFileName)
                 throws ZipException

Extracts a specific file from the zip file to the destination path. If destination path is invalid, then this method throws an exception.

Parameters:

fileHeader -

destinationPath -

newFileName -

Throws:

ZipException

extractFile

public void extractFile(String fileName,
                        String destinationPath)
                 throws ZipException

Extracts a specific file from the zip file to the destination path. This method first finds the necessary file header from the input file name.

File name is relative file name in the zip file. For example if a zip file contains a file "a.txt", then to extract this file, input file name has to be "a.txt". Another example is if there is a file "b.txt" in a folder "abc" in the zip file, then the input file name has to be abc/b.txt

Throws an exception if file header could not be found for the given file name or if the destination path is invalid

Parameters:

fileName -

destinationPath -

Throws:

ZipException

extractFile

public void extractFile(String fileName,
                        String destinationPath,
                        String newFileName)
                 throws ZipException

Extracts a specific file from the zip file to the destination path. This method first finds the necessary file header from the input file name.

File name is relative file name in the zip file. For example if a zip file contains a file "a.txt", then to extract this file, input file name has to be "a.txt". Another example is if there is a file "b.txt" in a folder "abc" in the zip file, then the input file name has to be abc/b.txt

If newFileName is not null or empty, newly created file name will be replaced by the value in newFileName. If this value is null, then the file name will be the value in FileHeader.getFileName

Throws an exception if file header could not be found for the given file name or if the destination path is invalid

Parameters:

fileName -

destinationPath -

newFileName -

Throws:

ZipException

getFileHeaders

public List<FileHeader> getFileHeaders()
                                throws ZipException

Returns the list of file headers in the zip file. Returns an empty list if the zip file does not exist.

Returns:

list of file headers

Throws:

ZipException

getFileHeader

public FileHeader getFileHeader(String fileName)
                         throws ZipException

Returns FileHeader if a file header with the given fileHeader string exists in the zip model: If not returns null

Parameters:

fileName -

Returns:

FileHeader

Throws:

ZipException

isEncrypted

public boolean isEncrypted()
                    throws ZipException

Checks to see if the zip file is encrypted

Returns:

true if encrypted, false if not

Throws:

ZipException

isSplitArchive

public boolean isSplitArchive()
                       throws ZipException

Checks if the zip file is a split archive

Returns:

true if split archive, false if not

Throws:

ZipException

removeFile

public void removeFile(String fileName)
                throws ZipException

Removes the file provided in the input parameters from the zip file. This method first finds the file header and then removes the file. If file does not exist, then this method throws an exception. If zip file is a split zip file, then this method throws an exception as zip specification does not allow for updating split zip archives.

Parameters:

fileName -

Throws:

ZipException

removeFile

public void removeFile(FileHeader fileHeader)
                throws ZipException

Removes the file provided in the input file header from the zip file. If zip file is a split zip file, then this method throws an exception as zip specification does not allow for updating split zip archives.

Parameters:

fileHeader -

Throws:

ZipException

mergeSplitFiles

public void mergeSplitFiles(File outputZipFile)
                     throws ZipException

Merges split zip files into a single zip file without the need to extract the files in the archive

Parameters:

outputZipFile -

Throws:

ZipException

setComment

public void setComment(String comment)
                throws ZipException

Sets comment for the Zip file

Parameters:

comment -

Throws:

ZipException

getComment

public String getComment()
                  throws ZipException

Returns the comment set for the Zip file

Returns:

String

Throws:

ZipException

getInputStream

public ZipInputStream getInputStream(FileHeader fileHeader)
                              throws IOException

Returns an input stream for reading the contents of the Zip file corresponding to the input FileHeader. Throws an exception if the FileHeader does not exist in the ZipFile

Parameters:

fileHeader -

Returns:

ZipInputStream

Throws:

ZipException

IOException

isValidZipFile

public boolean isValidZipFile()

Checks to see if the input zip file is a valid zip file. This method will try to read zip headers. If headers are read successfully, this method returns true else false

Returns:

boolean

Since:

1.2.3

getSplitZipFiles

public List<File> getSplitZipFiles()
                            throws ZipException

Returns the full file path+names of all split zip files in an ArrayList. For example: If a split zip file(abc.zip) has a 10 split parts this method returns an array list with path + "abc.z01", path + "abc.z02", etc. Returns null if the zip file does not exist

Returns:

List of Split zip Files

Throws:

ZipException

setPassword

public void setPassword(char[] password)

Sets a password to be used for the zip file. Will override if a password supplied via ZipFile constructor

Parameters:

password - - char array of the password to be used

getProgressMonitor

public ProgressMonitor getProgressMonitor()

isRunInThread

public boolean isRunInThread()

setRunInThread

public void setRunInThread(boolean runInThread)

getFile

public File getFile()

getCharset

public Charset getCharset()

setCharset

public void setCharset(Charset charset)
                throws IllegalArgumentException

Throws:

IllegalArgumentException

toString

public String toString()

Overrides:

toString in class Object