KZip

Inheritance diagram for KZip:

Public Types
enum	Compression { NoCompression = 0 , DeflateCompression = 1 }

enum	ExtraField { NoExtraField = 0 , ModificationTime = 1 , DefaultExtraField = 1 }

Public Member Functions
	KZip (const QString &filename)

	KZip (QIODevice *dev)

	~KZip () override

Compression	compression () const

ExtraField	extraField () const

void	setCompression (Compression c)

void	setExtraField (ExtraField ef)

Public Member Functions inherited from KArchive
bool	addLocalDirectory (const QString &path, const QString &destName)

bool	addLocalFile (const QString &fileName, const QString &destName)

virtual bool	close ()

QIODevice *	device () const

const KArchiveDirectory *	directory () const

QString	errorString () const

QString	fileName () const

bool	finishWriting (qint64 size)

bool	isOpen () const

QIODevice::OpenMode	mode () const

virtual bool	open (QIODevice::OpenMode mode)

bool	prepareWriting (const QString &name, const QString &user, const QString &group, qint64 size, mode_t perm=0100644, const QDateTime &atime=QDateTime(), const QDateTime &mtime=QDateTime(), const QDateTime &ctime=QDateTime())

bool	writeData (const char *data, qint64 size)

bool	writeData (QByteArrayView data)

bool	writeDir (const QString &name, const QString &user=QString(), const QString &group=QString(), mode_t perm=040755, const QDateTime &atime=QDateTime(), const QDateTime &mtime=QDateTime(), const QDateTime &ctime=QDateTime())

bool	writeFile (const QString &name, QByteArrayView data, mode_t perm=0100644, const QString &user=QString(), const QString &group=QString(), const QDateTime &atime=QDateTime(), const QDateTime &mtime=QDateTime(), const QDateTime &ctime=QDateTime())

bool	writeSymLink (const QString &name, const QString &target, const QString &user=QString(), const QString &group=QString(), mode_t perm=0120755, const QDateTime &atime=QDateTime(), const QDateTime &mtime=QDateTime(), const QDateTime &ctime=QDateTime())

Protected Member Functions
bool	closeArchive () override

bool	doFinishWriting (qint64 size) override

bool	doPrepareWriting (const QString &name, const QString &user, const QString &group, qint64 size, mode_t perm, const QDateTime &atime, const QDateTime &mtime, const QDateTime &creationTime) override

bool	doWriteData (const char *data, qint64 size) override

bool	doWriteDir (const QString &name, const QString &user, const QString &group, mode_t perm, const QDateTime &atime, const QDateTime &mtime, const QDateTime &ctime) override

bool	doWriteSymLink (const QString &name, const QString &target, const QString &user, const QString &group, mode_t perm, const QDateTime &atime, const QDateTime &mtime, const QDateTime &ctime) override

bool	openArchive (QIODevice::OpenMode mode) override

void	virtual_hook (int id, void *data) override

Protected Member Functions inherited from KArchive
	KArchive (const QString &fileName)

	KArchive (QIODevice *dev)

virtual bool	createDevice (QIODevice::OpenMode mode)

KArchiveDirectory *	findOrCreate (const QString &path)

virtual KArchiveDirectory *	rootDir ()

void	setDevice (QIODevice *dev)

void	setErrorString (const QString &errorStr)

void	setRootDir (KArchiveDirectory *rootDir)

Detailed Description

A class for reading / writing zip archives.

You can use it in QIODevice::ReadOnly or in QIODevice::WriteOnly mode, and it behaves just as expected. It can also be used in QIODevice::ReadWrite mode, in this case one can append files to an existing zip archive. When you append new files, which are not yet in the zip, it works as expected, i.e. the files are appended at the end. When you append a file, which is already in the file, the reference to the old file is dropped and the new one is added to the zip - but the old data from the file itself is not deleted, it is still in the zipfile. So when you want to have a small and garbage-free zipfile, just read the contents of the appended zip file and write it to a new one in QIODevice::WriteOnly mode. This is especially important when you don't want to leak information of how intermediate versions of files in the zip were looking.

For more information on the zip fileformat go to http://www.pkware.com/products/enterprise/white_papers/appnote.html

Author: Holger Schroeder holge.nosp@m.r-kd.nosp@m.e@hol.nosp@m.gis..nosp@m.net

Definition at line 37 of file kzip.h.

Member Enumeration Documentation

◆ Compression

enum KZip::Compression

Describes the compression type for a given file in the Zip archive.

Enumerator
NoCompression	Uncompressed.
DeflateCompression	Deflate compression method.

Definition at line 92 of file kzip.h.

◆ ExtraField

enum KZip::ExtraField

Describes the contents of the "extra field" for a given file in the Zip archive.

Enumerator
NoExtraField	No extra field.
ModificationTime	Modification time ("extended timestamp" header)

Definition at line 68 of file kzip.h.

Constructor & Destructor Documentation

◆ KZip() [1/2]

KZip::KZip ( const QString & filename )

explicit

Creates an instance that operates on the given filename.

using the compression filter associated to given mimetype.

Parameters

filename is a local path (e.g. "/home/holger/myfile.zip")

Definition at line 420 of file kzip.cpp.

◆ KZip() [2/2]

KZip::KZip ( QIODevice * dev )

explicit

Creates an instance that operates on the given device.

The device can be compressed (KCompressionDevice) or not (QFile, etc.).

Warning: Do not assume that giving a QFile here will decompress the file, in case it's compressed!

Parameters

dev	the device to access

Definition at line 426 of file kzip.cpp.

◆ ~KZip()

KZip::~KZip ( )

override

If the zip file is still opened, then it will be closed automatically by the destructor.

Definition at line 432 of file kzip.cpp.

Member Function Documentation

◆ closeArchive()

bool KZip::closeArchive ( )

overrideprotectedvirtual

Closes the archive.

Implements KArchive.

Definition at line 828 of file kzip.cpp.

◆ compression()

KZip::Compression KZip::compression ( ) const

The current compression mode that will be used for new files.

Returns: the current compression mode

See also: setCompression()

Definition at line 1341 of file kzip.cpp.

◆ doFinishWriting()

bool KZip::doFinishWriting ( qint64 size )

overrideprotectedvirtual

Write data to a file that has been created using prepareWriting().

Parameters

size	the size of the file

Returns: true if successful, false otherwise

Implements KArchive.

Definition at line 1236 of file kzip.cpp.

◆ doPrepareWriting()

bool KZip::doPrepareWriting	(	const QString &	name,
		const QString &	user,
		const QString &	group,
		qint64	size,
		mode_t	perm,
		const QDateTime &	atime,
		const QDateTime &	mtime,
		const QDateTime &	creationTime )

overrideprotectedvirtual

Reimplemented from KArchive.

Implements KArchive.

Definition at line 1040 of file kzip.cpp.

◆ doWriteData()

bool KZip::doWriteData	(	const char *	data,
		qint64	size )

overrideprotectedvirtual

Write data to a file that has been created using prepareWriting().

Parameters

data	a pointer to the data
size	the size of the chunk

Returns: true if successful, false otherwise

Reimplemented from KArchive.

Definition at line 1312 of file kzip.cpp.

◆ doWriteDir()

bool KZip::doWriteDir	(	const QString &	name,
		const QString &	user,
		const QString &	group,
		mode_t	perm,
		const QDateTime &	atime,
		const QDateTime &	mtime,
		const QDateTime &	ctime )

overrideprotectedvirtual

Reimplemented from KArchive.

Implements KArchive.

Definition at line 1022 of file kzip.cpp.

◆ doWriteSymLink()

bool KZip::doWriteSymLink	(	const QString &	name,
		const QString &	target,
		const QString &	user,
		const QString &	group,
		mode_t	perm,
		const QDateTime &	atime,
		const QDateTime &	mtime,
		const QDateTime &	ctime )

overrideprotectedvirtual

Reimplemented from KArchive.

Implements KArchive.

Definition at line 1272 of file kzip.cpp.

◆ extraField()

KZip::ExtraField KZip::extraField ( ) const

The current type of "extra field" that will be used for new files.

Returns: the current type of "extra field"

See also: setExtraField()

Definition at line 1351 of file kzip.cpp.

◆ openArchive()

bool KZip::openArchive ( QIODevice::OpenMode mode )

overrideprotectedvirtual

Opens the archive for reading.

Parses the directory listing of the archive and creates the KArchiveDirectory/KArchiveFile entries.

Parameters

mode	the mode of the file

Implements KArchive.

Definition at line 441 of file kzip.cpp.

◆ setCompression()

void KZip::setCompression ( Compression c )

Call this before writeFile or prepareWriting, to define whether the next files to be written should be compressed or not.

Parameters

c	the new compression mode

See also: compression()

Definition at line 1336 of file kzip.cpp.

◆ setExtraField()

void KZip::setExtraField ( ExtraField ef )

Call this before writeFile or prepareWriting, to define what the next file to be written should have in its extra field.

Parameters

ef	the type of "extra field"

See also: extraField()

Definition at line 1346 of file kzip.cpp.

◆ virtual_hook()

void KZip::virtual_hook	(	int	id,
		void *	data )

overrideprotectedvirtual

Reimplemented from KArchive.

Definition at line 1307 of file kzip.cpp.

The documentation for this class was generated from the following files:

KDE's Doxygen guidelines are available online.

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About KArchive

KZip

Public Types

Public Member Functions

Protected Member Functions

Detailed Description

Member Enumeration Documentation

◆ Compression

◆ ExtraField

Constructor & Destructor Documentation

◆ KZip() [1/2]

◆ KZip() [2/2]

◆ ~KZip()

Member Function Documentation

◆ closeArchive()

◆ compression()

◆ doFinishWriting()

◆ doPrepareWriting()

◆ doWriteData()

◆ doWriteDir()

◆ doWriteSymLink()

◆ extraField()

◆ openArchive()

◆ setCompression()

◆ setExtraField()

◆ virtual_hook()