KPtyProcess Class Reference

#include <kptyprocess.h>

Inheritance diagram for KPtyProcess:

Public Types
enum	PtyChannelFlag {   NoChannels = 0 , StdinChannel = 1 , StdoutChannel = 2 , StderrChannel = 4 ,   AllOutputChannels = 6 , AllChannels = 7 }
typedef QFlags< PtyChannelFlag >	PtyChannels
Public Types inherited from KProcess
enum	OutputChannelMode
Public Types inherited from QProcess
enum	ExitStatus
enum	InputChannelMode
enum	ProcessChannel
enum	ProcessChannelMode
enum	ProcessError
enum	ProcessState
enum	UnixProcessFlag
Public Types inherited from QIODeviceBase
enum	OpenModeFlag

Public Member Functions
	KPtyProcess (int ptyMasterFd, QObject *parent=nullptr)
	KPtyProcess (QObject *parent=nullptr)
	~KPtyProcess () override
bool	isUseUtmp () const
KPtyDevice *	pty () const
PtyChannels	ptyChannels () const
void	setPtyChannels (PtyChannels channels)
void	setUseUtmp (bool value)
Public Member Functions inherited from KProcess
	KProcess (QObject *parent=nullptr)
void	clearEnvironment ()
void	clearProgram ()
int	execute (int msecs=-1)
KProcess &	operator<< (const QString &arg)
KProcess &	operator<< (const QStringList &args)
OutputChannelMode	outputChannelMode () const
QStringList	program () const
void	setEnv (const QString &name, const QString &value, bool overwrite=true)
void	setNextOpenMode (QIODevice::OpenMode mode)
void	setOutputChannelMode (OutputChannelMode mode)
void	setProgram (const QString &exe, const QStringList &args=QStringList())
void	setProgram (const QStringList &argv)
void	setShellCommand (const QString &cmd)
void	start ()
int	startDetached ()
void	unsetEnv (const QString &name)
Public Member Functions inherited from QProcess
	QProcess (QObject *parent)
QStringList	arguments () const const
virtual qint64	bytesToWrite () const const override
std::function< void()>	childProcessModifier ()> childProcessModifier() const const
virtual void	close () override
void	closeReadChannel (ProcessChannel channel)
void	closeWriteChannel ()
CreateProcessArgumentModifier	createProcessArgumentsModifier () const const
QStringList	environment () const const
QProcess::ProcessError	error () const const
void	errorOccurred (QProcess::ProcessError error)
int	exitCode () const const
QProcess::ExitStatus	exitStatus () const const
void	finished (int exitCode, QProcess::ExitStatus exitStatus)
InputChannelMode	inputChannelMode () const const
virtual bool	isSequential () const const override
void	kill ()
QString	nativeArguments () const const
virtual bool	open (OpenMode mode) override
ProcessChannelMode	processChannelMode () const const
QProcessEnvironment	processEnvironment () const const
qint64	processId () const const
QString	program () const const
QByteArray	readAllStandardError ()
QByteArray	readAllStandardOutput ()
ProcessChannel	readChannel () const const
void	readyReadStandardError ()
void	readyReadStandardOutput ()
void	setArguments (const QStringList &arguments)
void	setChildProcessModifier (const std::function< void()> &modifier)
void	setCreateProcessArgumentsModifier (CreateProcessArgumentModifier modifier)
void	setEnvironment (const QStringList &environment)
void	setInputChannelMode (InputChannelMode mode)
void	setNativeArguments (const QString &arguments)
void	setProcessChannelMode (ProcessChannelMode mode)
void	setProcessEnvironment (const QProcessEnvironment &environment)
void	setProgram (const QString &program)
void	setReadChannel (ProcessChannel channel)
void	setStandardErrorFile (const QString &fileName, OpenMode mode)
void	setStandardInputFile (const QString &fileName)
void	setStandardOutputFile (const QString &fileName, OpenMode mode)
void	setStandardOutputProcess (QProcess *destination)
void	setUnixProcessParameters (const UnixProcessParameters &params)
void	setUnixProcessParameters (UnixProcessFlags flagsOnly)
void	setWorkingDirectory (const QString &dir)
void	start (const QString &program, const QStringList &arguments, OpenMode mode)
void	start (OpenMode mode)
void	startCommand (const QString &command, OpenMode mode)
bool	startDetached (qint64 *pid)
void	started ()
QProcess::ProcessState	state () const const
void	stateChanged (QProcess::ProcessState newState)
void	terminate ()
UnixProcessParameters	unixProcessParameters () const const
virtual bool	waitForBytesWritten (int msecs) override
bool	waitForFinished (int msecs)
virtual bool	waitForReadyRead (int msecs) override
bool	waitForStarted (int msecs)
QString	workingDirectory () const const
Public Member Functions inherited from QIODevice
	QIODevice (QObject *parent)
void	aboutToClose ()
virtual bool	atEnd () const const
virtual qint64	bytesAvailable () 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
bool	isTextModeEnabled () const const
bool	isTransactionStarted () const const
bool	isWritable () const const
virtual bool	open (QIODeviceBase::OpenMode mode)
QIODeviceBase::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 ()
qint64	readLine (char *data, qint64 maxSize)
QByteArray	readLine (qint64 maxSize)
void	readyRead ()
virtual bool	reset ()
void	rollbackTransaction ()
virtual bool	seek (qint64 pos)
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)
qint64	write (const char *data)
qint64	write (const char *data, qint64 maxSize)
qint64	write (const QByteArray &data)
int	writeChannelCount () const const
Public Member Functions inherited from QObject
	QObject (QObject *parent)
QBindable< QString >	bindableObjectName ()
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 () const const
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 QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isQuickItemType () const const
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_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_GADGET_EXPORT (EXPORT_MACRO)
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_MOC_INCLUDE Q_MOC_INCLUDE
	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	qobject_cast (const QObject *object)
T	qobject_cast (QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setObjectName (QAnyStringView name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	setProperty (const char *name, QVariant &&value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)
QThread *	thread () const const

Additional Inherited Members
Properties inherited from QObject
	objectName
Static Public Member Functions inherited from KProcess
static int	execute (const QString &exe, const QStringList &args=QStringList(), int msecs=-1)
static int	execute (const QStringList &argv, int msecs=-1)
static int	startDetached (const QString &exe, const QStringList &args=QStringList())
static int	startDetached (const QStringList &argv)
Static Public Member Functions inherited from QProcess
int	execute (const QString &program, const QStringList &arguments)
QString	nullDevice ()
QStringList	splitCommand (QStringView command)
bool	startDetached (const QString &program, const QStringList &arguments, const QString &workingDirectory, qint64 *pid)
QStringList	systemEnvironment ()
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 *context, Functor functor, 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)
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, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
QString	tr (const char *sourceText, const char *disambiguation, int n)
Public Attributes inherited from KProcess
	ForwardedChannels
	MergedChannels
	OnlyStderrChannel
	OnlyStdoutChannel
	SeparateChannels
Public Attributes inherited from QProcess
	CloseFileDescriptors
	Crashed
	CrashExit
typedef	CreateProcessArgumentModifier
	FailedToStart
	ForwardedChannels
	ForwardedErrorChannel
	ForwardedInputChannel
	ForwardedOutputChannel
	IgnoreSigPipe
	ManagedInputChannel
	MergedChannels
	NormalExit
	NotRunning
	ReadError
	ResetSignalHandlers
	Running
	SeparateChannels
	StandardError
	StandardOutput
	Starting
	Timedout
typedef	UnixProcessFlags
	UnknownError
	UseVFork
	WriteError
Public Attributes inherited from QObject
typedef	QObjectList
Public Attributes inherited from QIODeviceBase
	Append
	ExistingOnly
	NewOnly
	NotOpen
typedef	OpenMode
	ReadOnly
	ReadWrite
	Text
	Truncate
	Unbuffered
	WriteOnly
Protected Member Functions inherited from KProcess
KCOREADDONS_NO_EXPORT	KProcess (KProcessPrivate *d, QObject *parent)
Protected Member Functions inherited from QProcess
virtual qint64	readData (char *data, qint64 maxlen) override
void	setProcessState (ProcessState state)
Protected Member Functions inherited from QIODevice
virtual qint64	readLineData (char *data, qint64 maxSize)
void	setErrorString (const QString &str)
void	setOpenMode (QIODeviceBase::OpenMode openMode)
virtual qint64	skipData (qint64 maxSize)
virtual qint64	writeData (const char *data, qint64 maxSize)=0
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)
Protected Attributes inherited from KProcess
std::unique_ptr< KProcessPrivate > const	d_ptr

Detailed Description

This class extends KProcess by support for PTYs (pseudo TTYs).

The PTY is opened as soon as the class is instantiated. Verify that it was opened successfully by checking that pty()->masterFd() is not -1.

The PTY is always made the process' controlling TTY. Utmp registration and connecting the stdio handles to the PTY are optional.

No attempt to integrate with QProcess' waitFor*() functions was made, for it is impossible. Note that execute() does not work with the PTY, too. Use the PTY device's waitFor*() functions or use it asynchronously.

Note

If you inherit from this class and use setChildProcessModifier() in the derived class, you must call the childProcessModifier() of KPtyProcess first (using setChildProcessModifier() in the derived class will "overwrite" the childProcessModifier() std::function that was previously set by KPtyProcess). For example:

class MyProcess : public KPtyProcess
{
    MyProcess()
    {
        auto parentChildProcModifier = KPtyProcess::childProcessModifier();
        setChildProcessModifier([parentChildProcModifier]() {
            // First call the parent class modifier function
            if (parentChildProcModifier) {
                parentChildProcModifier();
            }
            // Then whatever extra code you need to run
            ....
            ....
        });
    }

Author

Oswald Buddenhagen ossi@.nosp@m.kde..nosp@m.org

Definition at line 59 of file kptyprocess.h.

Member Typedef Documentation

PtyChannels

typedef QFlags< PtyChannelFlag > KPtyProcess::PtyChannels

Stores a combination of PtyChannelFlag values.

Definition at line 80 of file kptyprocess.h.

Member Enumeration Documentation

PtyChannelFlag

enum KPtyProcess::PtyChannelFlag

See also

PtyChannels

Enumerator
NoChannels	The PTY is not connected to any channel.
StdinChannel	Connect PTY to stdin.
StdoutChannel	Connect PTY to stdout.
StderrChannel	Connect PTY to stderr.
AllOutputChannels	Connect PTY to all output channels.
AllChannels	Connect PTY to all channels.

Definition at line 68 of file kptyprocess.h.

Constructor & Destructor Documentation

KPtyProcess() [1/2]

KPtyProcess::KPtyProcess ( QObject * parent = nullptr )

explicit

Constructor.

Definition at line 32 of file kptyprocess.cpp.

KPtyProcess() [2/2]

KPtyProcess::KPtyProcess	(	int	ptyMasterFd,
		QObject *	parent = nullptr )

Construct a process using an open pty master.

Parameters

ptyMasterFd

an open pty master file descriptor. The process does not take ownership of the descriptor; it will not be automatically closed at any point.

Definition at line 37 of file kptyprocess.cpp.

~KPtyProcess()

KPtyProcess::~KPtyProcess ( )

override

Destructor.

Definition at line 79 of file kptyprocess.cpp.

Member Function Documentation

isUseUtmp()

bool KPtyProcess::isUseUtmp

(

)

const

Get whether to register the process as a TTY login in utmp.

Returns

whether to register in utmp

Definition at line 110 of file kptyprocess.cpp.

pty()

KPtyDevice * KPtyProcess::pty

(

)

const

Get the PTY device of this process.

Returns

the PTY device

Definition at line 117 of file kptyprocess.cpp.

ptyChannels()

KPtyProcess::PtyChannels KPtyProcess::ptyChannels

(

)

const

Query to which channels the PTY is assigned.

Returns

the output channel handling mode

Definition at line 96 of file kptyprocess.cpp.

setPtyChannels()

void KPtyProcess::setPtyChannels

(

PtyChannels

channels

)

Set to which channels the PTY should be assigned.

This function must be called before starting the process.

Parameters

channels

the output channel handling mode

Definition at line 89 of file kptyprocess.cpp.

setUseUtmp()

void KPtyProcess::setUseUtmp

(

bool

value

)

Set whether to register the process as a TTY login in utmp.

Utmp is disabled by default. It should enabled for interactively fed processes, like terminal emulations.

This function must be called before starting the process.

Parameters

value

whether to register in utmp.

Definition at line 103 of file kptyprocess.cpp.

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

• kptyprocess.h
• kptyprocess.cpp