KFilterDev Class Reference

#include <KFilterDev>

Inheritance diagram for KFilterDev:

Public Member Functions
	KFilterDev (const QString &fileName)
Public Member Functions inherited from KCompressionDevice
	KCompressionDevice (QIODevice *inputDevice, bool autoDeleteInputDevice, CompressionType type)
	KCompressionDevice (const QString &fileName, CompressionType type)
virtual	~KCompressionDevice ()
bool	atEnd () const override
void	close () override
CompressionType	compressionType () const
QFileDevice::FileError	error () const
bool	open (QIODevice::OpenMode mode) override
bool	seek (qint64) override
void	setOrigFileName (const QByteArray &fileName)
void	setSkipHeaders ()
Public Member Functions inherited from QIODevice
	QIODevice (QObject *parent)
void	aboutToClose ()
virtual qint64	bytesAvailable () const const
virtual qint64	bytesToWrite () const const
void	bytesWritten (qint64 bytes)
virtual bool	canReadLine () const const
void	channelBytesWritten (int channel, qint64 bytes)
void	channelReadyRead (int channel)
void	commitTransaction ()
int	currentReadChannel () const const
int	currentWriteChannel () const const
QString	errorString () const const
bool	getChar (char *c)
bool	isOpen () const const
bool	isReadable () const const
virtual bool	isSequential () const const
bool	isTextModeEnabled () const const
bool	isTransactionStarted () const const
bool	isWritable () const const
QIODevice::OpenMode	openMode () const const
qint64	peek (char *data, qint64 maxSize)
QByteArray	peek (qint64 maxSize)
virtual qint64	pos () const const
bool	putChar (char c)
qint64	read (char *data, qint64 maxSize)
QByteArray	read (qint64 maxSize)
QByteArray	readAll ()
int	readChannelCount () const const
void	readChannelFinished ()
QByteArray	readLine (qint64 maxSize)
qint64	readLine (char *data, qint64 maxSize)
void	readyRead ()
virtual bool	reset ()
void	rollbackTransaction ()
void	setCurrentReadChannel (int channel)
void	setCurrentWriteChannel (int channel)
void	setTextModeEnabled (bool enabled)
virtual qint64	size () const const
qint64	skip (qint64 maxSize)
void	startTransaction ()
void	ungetChar (char c)
virtual bool	waitForBytesWritten (int msecs)
virtual bool	waitForReadyRead (int msecs)
qint64	write (const char *data)
qint64	write (const QByteArray &byteArray)
qint64	write (const char *data, qint64 maxSize)
int	writeChannelCount () const const
Public Member Functions inherited from QObject
	QObject (QObject *parent)
bool	blockSignals (bool block)
const QObjectList &	children () const const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo ()
void	dumpObjectInfo () const const
void	dumpObjectTree ()
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_DISABLE_COPY (Class)
	Q_DISABLE_COPY_MOVE (Class)
	Q_DISABLE_MOVE (Class)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qFindChild (const QObject *obj, const QString &name)
QList< T >	qFindChildren (const QObject *obj, const QRegExp &regExp)
QList< T >	qFindChildren (const QObject *obj, const QString &name)
T	qobject_cast (QObject *object)
T	qobject_cast (const QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)
QThread *	thread () const const

Static Public Member Functions
static CompressionType	compressionTypeForMimeType (const QString &mimetype)
static KCompressionDevice *	device (QIODevice *inDevice, const QString &mimetype, bool autoDeleteInDevice=true)
static KCompressionDevice *	deviceForFile (const QString &fileName, const QString &mimetype=QString(), bool forceFilter=false)
Static Public Member Functions inherited from KCompressionDevice
static KFilterBase *	filterForCompressionType (CompressionType type)
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
QString	tr (const char *sourceText, const char *disambiguation, int n)
QString	trUtf8 (const char *sourceText, const char *disambiguation, int n)

Additional Inherited Members
Public Types inherited from KCompressionDevice
enum	CompressionType { GZip, BZip2, Xz, None }
Public Types inherited from QIODevice
enum	OpenModeFlag
Properties inherited from QObject
	objectName
Public Attributes inherited from QIODevice
	Append
	ExistingOnly
	NewOnly
	NotOpen
typedef	OpenMode
	ReadOnly
	ReadWrite
	Text
	Truncate
	Unbuffered
	WriteOnly
Public Attributes inherited from QObject
typedef	QObjectList
Protected Member Functions inherited from KCompressionDevice
KFilterBase *	filterBase ()
qint64	readData (char *data, qint64 maxlen) override
qint64	writeData (const char *data, qint64 len) override
Protected Member Functions inherited from QIODevice
virtual qint64	readLineData (char *data, qint64 maxSize)
void	setErrorString (const QString &str)
void	setOpenMode (QIODevice::OpenMode openMode)
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	customEvent (QEvent *event)
virtual void	disconnectNotify (const QMetaMethod &signal)
bool	isSignalConnected (const QMetaMethod &signal) const const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const const
virtual void	timerEvent (QTimerEvent *event)

Detailed Description

A class for reading and writing compressed data onto a device (e.g.

file, but other usages are possible, like a buffer or a socket).

To simply read/write compressed files, see deviceForFile.

KFilterDev adds MIME type support to KCompressionDevice, and also provides compatibility methods for KDE 4 code.

Author

David Faure faure[email protected]@kde[email protected].org

Definition at line 29 of file kfilterdev.h.

Constructor & Destructor Documentation

KFilterDev::KFilterDev

(

const QString &

fileName

)

Since

5.0 Constructs a KFilterDev for a given FileName.

Parameters

fileName

the name of the file to filter.

Definition at line 38 of file kfilterdev.cpp.

Member Function Documentation

KCompressionDevice::CompressionType KFilterDev::compressionTypeForMimeType ( const QString &  mimetype )

static

Returns the compression type for the given mimetype, if possible.

Otherwise returns None. This handles simple cases like application/x-gzip, but also application/x-compressed-tar, and inheritance.

Definition at line 43 of file kfilterdev.cpp.

static KCompressionDevice* KFilterDev::device ( QIODevice *  inDevice, const QString &  mimetype, bool  autoDeleteInDevice = true  )

inlinestatic

Deprecated:

Since 5.0, use KCompressionDevice

Use: KCompressionDevice::CompressionType type = KFilterDev::compressionTypeForMimeType(mimeType); KCompressionDevice flt(&file, false, type); instead of: QIODevice *flt = KFilterDev::device(&file, mimeType, false);

Creates an i/o device that is able to read from the QIODevice inDevice, whether the data is compressed or not. Available compression filters (gzip/bzip2 etc.) will automatically be used.

The compression filter to be used is determined mimetype . Pass "application/x-gzip" or "application/x-bzip" to use the corresponding decompression filter.

Warning: application/x-bzip may not be available. In that case 0 will be returned !

The returned QIODevice has to be deleted after using.

Parameters

inDevice	input device. Won't be deleted if autoDeleteInDevice = false
mimetype	the mime type for the filter
autoDeleteInDevice	if true, inDevice will be deleted automatically

Returns

a KCompressionDevice that filters the original stream. Must be deleted after using

Definition at line 134 of file kfilterdev.h.

static KCompressionDevice* KFilterDev::deviceForFile ( const QString &  fileName, const QString &  mimetype = QString(), bool  forceFilter = false  )

inlinestatic

Deprecated:

Since 5.0, use the constructor instead (if mimetype is empty), or KCompressionDevice (if the mimetype is known).

Use: KFilterDev dev(fileName) instead of: QIODevice * dev = KFilterDev::deviceForFile(fileName);

If the mimetype was specified explicitly, use: KCompressionDevice dev(fileName, KCompressionDevice::GZip); instead of: QIODevice * dev = KFilterDev::deviceForFile(fileName, "application/gzip");

Creates an i/o device that is able to read from fileName, whether it's compressed or not. Available compression filters (gzip/bzip2 etc.) will automatically be used.

The compression filter to be used is determined from the fileName if mimetype is empty. Pass "application/x-gzip" or "application/x-bzip" to force the corresponding decompression filter, if available.

Warning: application/x-bzip may not be available. In that case a QFile opened on the compressed data will be returned ! Use KFilterBase::findFilterByMimeType and code similar to what deviceForFile is doing, to better control what's happening.

The returned QIODevice has to be deleted after using.

Parameters

fileName	the name of the file to filter
mimetype	the mime type of the file to filter, or QString() if unknown
forceFilter	if true, the function will either find a compression filter, or return 0. If false, it will always return a QIODevice. If no filter is available it will return a simple QFile. This can be useful if the file is usable without a filter.

Returns

if a filter has been found, the KCompressionDevice for the filter. If the filter does not exist, the return value depends on forceFilter. The returned KCompressionDevice has to be deleted after using.

Definition at line 87 of file kfilterdev.h.

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

• kfilterdev.h
• kfilterdev.cpp