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+++ b/gui/qtermwidget/lib/k3process.h
@@ -0,0 +1,890 @@
+/* This file is part of the KDE libraries
+    Copyright (C) 1997 Christian Czezakte (e9025461@student.tuwien.ac.at)
+
+    Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef K3PROCESS_H
+#define K3PROCESS_H
+
+#include <QtCore/QObject>
+
+#include <sys/types.h> // for pid_t
+#include <sys/wait.h>
+#include <signal.h>
+#include <unistd.h>
+
+class QSocketNotifier;
+class K3ProcessPrivate;
+class KPty;
+
+/**
+ * @obsolete Use KProcess and KPtyProcess instead.
+ *
+ * Child process invocation, monitoring and control.
+ * This class works only in the application's main thread.
+ *
+ * <b>General usage and features:</b>\n
+ *
+ * This class allows a KDE application to start child processes without having
+ * to worry about UN*X signal handling issues and zombie process reaping.
+ *
+ * @see K3ProcIO
+ *
+ * Basically, this class distinguishes three different ways of running
+ * child processes:
+ *
+ * @li  DontCare -- The child process is invoked and both the child
+ * process and the parent process continue concurrently.
+ *
+ * The process is started in an own session (see setsid(2)).
+ *
+ * @li  NotifyOnExit -- The child process is invoked and both the
+ * child and the parent process run concurrently.
+ *
+ * When the child process exits, the K3Process instance
+ * corresponding to it emits the Qt signal processExited().
+ * Since this signal is @em not emitted from within a UN*X
+ * signal handler, arbitrary function calls can be made.
+ *
+ * Be aware: When the K3Process object gets destructed, the child
+ * process will be killed if it is still running!
+ * This means in particular, that it usually makes no sense to use
+ * a K3Process on the stack with NotifyOnExit.
+ *
+ * @li  OwnGroup -- like NotifyOnExit, but the child process is started
+ * in an own process group (and an own session, FWIW). The behavior of
+ * kill() changes to killing the whole process group - this makes
+ * this mode useful for implementing primitive job management. It can be
+ * used to work around broken wrapper scripts that don't propagate signals
+ * to the "real" program. However, use this with care, as you disturb the
+ * shell's job management if your program is started from the command line.
+ *
+ * @li  Block -- The child process starts and the parent process
+ * is suspended until the child process exits. (@em Really not recommended
+ * for programs with a GUI.)
+ * In this mode the parent can read the child's output, but can't send it any
+ * input.
+ *
+ * K3Process also provides several functions for determining the exit status
+ * and the pid of the child process it represents.
+ *
+ * Furthermore it is possible to supply command-line arguments to the process
+ * in a clean fashion (no null-terminated stringlists and such...)
+ *
+ * A small usage example:
+ * \code
+ *   K3Process *proc = new K3Process;
+ *
+ *   *proc << "my_executable";
+ *   *proc << "These" << "are" << "the" << "command" << "line" << "args";
+ *   QApplication::connect(proc, SIGNAL(processExited(K3Process *)),
+ *                         pointer_to_my_object, SLOT(my_objects_slot(K3Process *)));
+ *   proc->start();
+ * \endcode
+ *
+ * This will start "my_executable" with the commandline arguments "These"...
+ *
+ * When the child process exits, the slot will be invoked.
+ *
+ * <b>Communication with the child process:</b>\n
+ *
+ * K3Process supports communication with the child process through
+ * stdin/stdout/stderr.
+ *
+ * The following functions are provided for getting data from the child
+ * process or sending data to the child's stdin (For more information,
+ * have a look at the documentation of each function):
+ *
+ * @li writeStdin()
+ *  -- Transmit data to the child process' stdin. When all data was sent, the
+ * signal wroteStdin() is emitted.
+ *
+ * @li When data arrives at stdout or stderr, the signal receivedStdout()
+ * resp. receivedStderr() is emitted.
+ *
+ * @li You can shut down individual communication channels with
+ * closeStdin(), closeStdout(), and closeStderr(), resp.
+ *
+ * @author Christian Czezatke e9025461@student.tuwien.ac.at
+ *
+ **/
+class K3Process : public QObject
+{
+  Q_OBJECT
+
+public:
+
+  /**
+   * Modes in which the communication channels can be opened.
+   *
+   * If communication for more than one channel is required,
+   * the values should be or'ed together, for example to get
+   * communication with stdout as well as with stdin, you would
+   * specify @p Stdin | @p Stdout
+   *
+   */
+  enum CommunicationFlag {
+       NoCommunication = 0, /**< No communication with the process. */
+       Stdin = 1, /**< Connect to write to the process with writeStdin(). */
+       Stdout = 2, /**< Connect to read from the process' output. */
+       Stderr = 4, /**< Connect to read from the process' stderr. */
+       AllOutput = 6, /**< Connects to all output channels. */
+       All = 7, /**< Connects to all channels. */
+       NoRead = 8, /**< If specified with Stdout, no data is actually read from stdout,
+                    * only the signal receivedStdout(int fd, int &len) is emitted. */
+       CTtyOnly = NoRead, /**< Tells setUsePty() to create a PTY for the process
+                           * and make it the process' controlling TTY, but does not
+                           * redirect any I/O channel to the PTY. */
+       MergedStderr = 16  /**< If specified with Stdout, the process' stderr will be
+                           * redirected onto the same file handle as its stdout, i.e.,
+                           * all error output will be signalled with receivedStdout().
+                           * Don't specify Stderr if you specify MergedStderr. */
+  };
+
+  Q_DECLARE_FLAGS(Communication, CommunicationFlag)
+
+  /**
+   * Run-modes for a child process.
+   */
+  enum RunMode {
+      /**
+       * The application does not receive notifications from the subprocess when
+       * it is finished or aborted.
+       */
+       DontCare,
+       /**
+        * The application is notified when the subprocess dies.
+        */
+       NotifyOnExit,
+       /**
+        * The application is suspended until the started process is finished.
+        */
+       Block,
+       /**
+        * Same as NotifyOnExit, but the process is run in an own session,
+        * just like with DontCare.
+        */
+       OwnGroup
+  };
+
+  /**
+   * Constructor
+   */
+  explicit K3Process( QObject* parent=0L );
+
+  /**
+   *Destructor:
+   *
+   *  If the process is running when the destructor for this class
+   *  is called, the child process is killed with a SIGKILL, but
+   *  only if the run mode is not of type @p DontCare.
+   *  Processes started as @p DontCare keep running anyway.
+  */
+  virtual ~K3Process();
+
+  /**
+   * Sets the executable and the command line argument list for this process.
+   *
+   * For example, doing an "ls -l /usr/local/bin" can be achieved by:
+   *  \code
+   *  K3Process p;
+   *  ...
+   *  p << "ls" << "-l" << "/usr/local/bin"
+   *  \endcode
+   *
+   * @param arg the argument to add
+   * @return a reference to this K3Process
+   **/
+  K3Process &operator<<(const QString& arg);
+  /**
+   * Similar to previous method, takes a char *, supposed to be in locale 8 bit already.
+   */
+  K3Process &operator<<(const char * arg);
+  /**
+   * Similar to previous method, takes a QByteArray, supposed to be in locale 8 bit already.
+   * @param arg the argument to add
+   * @return a reference to this K3Process
+   */
+  K3Process &operator<<(const QByteArray & arg);
+
+  /**
+   * Sets the executable and the command line argument list for this process,
+   * in a single method call, or add a list of arguments.
+   * @param args the arguments to add
+   * @return a reference to this K3Process
+   **/
+  K3Process &operator<<(const QStringList& args);
+
+  /**
+   * Clear a command line argument list that has been set by using
+   * operator<<.
+  */
+  void clearArguments();
+
+  /**
+   *  Starts the process.
+   *  For a detailed description of the
+   *  various run modes and communication semantics, have a look at the
+   *  general description of the K3Process class. Note that if you use
+   * setUsePty( Stdout | Stderr, \<bool\> ), you cannot use Stdout | Stderr
+   *  here - instead, use Stdout only to receive the mixed output.
+   *
+   *  The following problems could cause this function to
+   *    return false:
+   *
+   *  @li The process is already running.
+   *  @li The command line argument list is empty.
+   *  @li The the @p comm parameter is incompatible with the selected pty usage.
+   *  @li The starting of the process failed (could not fork).
+   *  @li The executable was not found.
+   *
+   *  @param runmode The Run-mode for the process.
+   *  @param comm  Specifies which communication channels should be
+   *  established to the child process (stdin/stdout/stderr). By default,
+   *  no communication takes place and the respective communication
+   *  signals will never get emitted.
+   *
+   *  @return true on success, false on error
+   *  (see above for error conditions)
+   **/
+  virtual bool start(RunMode  runmode = NotifyOnExit,
+                     Communication comm = NoCommunication);
+
+  /**
+   * Stop the process (by sending it a signal).
+   *
+   * @param signo The signal to send. The default is SIGTERM.
+   * @return true if the signal was delivered successfully.
+  */
+  virtual bool kill(int signo = SIGTERM);
+
+  /**
+   * Checks whether the process is running.
+   * @return true if the process is (still) considered to be running
+  */
+  bool isRunning() const;
+
+  /** Returns the process id of the process.
+   *
+   * If it is called after
+   * the process has exited, it returns the process id of the last
+   *  child process that was created by this instance of K3Process.
+   *
+   *  Calling it before any child process has been started by this
+   *  K3Process instance causes pid() to return 0.
+   * @return the pid of the process or 0 if no process has been started yet.
+   **/
+  pid_t pid() const;
+
+  /**
+   * Suspend processing of data from stdout of the child process.
+   */
+  void suspend();
+
+  /**
+   * Resume processing of data from stdout of the child process.
+   */
+  void resume();
+
+  /**
+   * Suspend execution of the current thread until the child process dies
+   * or the timeout hits. This function is not recommended for programs
+   * with a GUI.
+   * @param timeout timeout in seconds. -1 means wait indefinitely.
+   * @return true if the process exited, false if the timeout hit.
+   */
+  bool wait(int timeout = -1);
+
+  /**
+   * Checks whether the process exited cleanly.
+   *
+   * @return true if the process has already finished and has exited
+   *  "voluntarily", ie: it has not been killed by a signal.
+   */
+  bool normalExit() const;
+
+  /**
+   * Checks whether the process was killed by a signal.
+   *
+   * @return true if the process has already finished and has not exited
+   * "voluntarily", ie: it has been killed by a signal.
+   */
+  bool signalled() const;
+
+  /**
+   * Checks whether a killed process dumped core.
+   *
+   * @return true if signalled() returns true and the process
+   * dumped core. Note that on systems that don't define the
+   * WCOREDUMP macro, the return value is always false.
+   */
+  bool coreDumped() const;
+
+  /**
+   * Returns the exit status of the process.
+   *
+   * @return the exit status of the process. Note that this value
+   * is not valid if normalExit() returns false.
+   */
+  int exitStatus() const;
+
+  /**
+   * Returns the signal the process was killed by.
+   *
+   * @return the signal number that caused the process to exit.
+   * Note that this value is not valid if signalled() returns false.
+   */
+  int exitSignal() const;
+
+  /**
+   *	 Transmit data to the child process' stdin.
+   *
+   * This function may return false in the following cases:
+   *
+   *     @li The process is not currently running.
+   * This implies that you cannot use this function in Block mode.
+   *
+   *     @li Communication to stdin has not been requested in the start() call.
+   *
+   *     @li Transmission of data to the child process by a previous call to
+   * writeStdin() is still in progress.
+   *
+   * Please note that the data is sent to the client asynchronously,
+   * so when this function returns, the data might not have been
+   * processed by the child process.
+   * That means that you must not free @p buffer or call writeStdin()
+   * again until either a wroteStdin() signal indicates that the
+   * data has been sent or a processExited() signal shows that
+   * the child process is no longer alive.
+   *
+   * If all the data has been sent to the client, the signal
+   * wroteStdin() will be emitted.
+   *
+   * This function does not work when the process is start()ed in Block mode.
+   *
+   * @param buffer the buffer to write
+   * @param buflen the length of the buffer
+   * @return false if an error has occurred
+   **/
+  bool writeStdin(const char *buffer, int buflen);
+
+  /**
+   * Shuts down the Stdin communication link. If no pty is used, this
+   * causes "EOF" to be indicated on the child's stdin file descriptor.
+   *
+   * @return false if no Stdin communication link exists (any more).
+   */
+  bool closeStdin();
+
+  /**
+   * Shuts down the Stdout communication link. If no pty is used, any further
+   * attempts by the child to write to its stdout file descriptor will cause
+   * it to receive a SIGPIPE.
+   *
+   * @return false if no Stdout communication link exists (any more).
+   */
+  bool closeStdout();
+
+  /**
+   * Shuts down the Stderr communication link. If no pty is used, any further
+   * attempts by the child to write to its stderr file descriptor will cause
+   * it to receive a SIGPIPE.
+   *
+   * @return false if no Stderr communication link exists (any more).
+   */
+  bool closeStderr();
+
+  /**
+   * Deletes the optional utmp entry and closes the pty.
+   *
+   * Make sure to shut down any communication links that are using the pty
+   * before calling this function.
+   *
+   * @return false if the pty is not open (any more).
+   */
+  bool closePty();
+
+  /**
+   * @brief Close stdin, stdout, stderr and the pty
+   *
+   * This is the same that calling all close* functions in a row:
+   * @see closeStdin, @see closeStdout, @see closeStderr and @see closePty
+   */
+  void closeAll();
+
+  /**
+   * Lets you see what your arguments are for debugging.
+   * @return the list of arguments
+   */
+  const QList<QByteArray> &args() /* const */ { return arguments; }
+
+  /**
+   * Controls whether the started process should drop any
+   * setuid/setgid privileges or whether it should keep them.
+   * Note that this function is mostly a dummy, as the KDE libraries
+   * currently refuse to run with setuid/setgid privileges.
+   *
+   * The default is false: drop privileges
+   * @param keepPrivileges true to keep the privileges
+   */
+  void setRunPrivileged(bool keepPrivileges);
+
+  /**
+   * Returns whether the started process will drop any
+   * setuid/setgid privileges or whether it will keep them.
+   * @return true if the process runs privileged
+   */
+  bool runPrivileged() const;
+
+  /**
+   * Adds the variable @p name to the process' environment.
+   * This function must be called before starting the process.
+   * @param name the name of the environment variable
+   * @param value the new value for the environment variable
+   */
+  void setEnvironment(const QString &name, const QString &value);
+
+  /**
+   * Changes the current working directory (CWD) of the process
+   * to be started.
+   * This function must be called before starting the process.
+   * @param dir the new directory
+   */
+  void setWorkingDirectory(const QString &dir);
+
+  /**
+   * Specify whether to start the command via a shell or directly.
+   * The default is to start the command directly.
+   * If @p useShell is true @p shell will be used as shell, or
+   * if shell is empty, /bin/sh will be used.
+   *
+   * When using a shell, the caller should make sure that all filenames etc.
+   * are properly quoted when passed as argument.
+   * @see quote()
+   * @param useShell true if the command should be started via a shell
+   * @param shell the path to the shell that will execute the process, or
+   *              0 to use /bin/sh. Use getenv("SHELL") to use the user's
+   *              default shell, but note that doing so is usually a bad idea
+   *              for shell compatibility reasons.
+   */
+  void setUseShell(bool useShell, const char *shell = 0);
+
+  /**
+   * This function can be used to quote an argument string such that
+   * the shell processes it properly. This is e. g. necessary for
+   * user-provided file names which may contain spaces or quotes.
+   * It also prevents expansion of wild cards and environment variables.
+   * @param arg the argument to quote
+   * @return the quoted argument
+   */
+  static QString quote(const QString &arg);
+
+  /**
+   * Detaches K3Process from child process. All communication is closed.
+   * No exit notification is emitted any more for the child process.
+   * Deleting the K3Process will no longer kill the child process.
+   * Note that the current process remains the parent process of the
+   * child process.
+   */
+  void detach();
+
+  /**
+   * Specify whether to create a pty (pseudo-terminal) for running the
+   * command.
+   * This function should be called before starting the process.
+   *
+   * @param comm for which stdio handles to use a pty. Note that it is not
+   *  allowed to specify Stdout and Stderr at the same time both here and to
+   * start (there is only one pty, so they cannot be distinguished).
+   * @param addUtmp true if a utmp entry should be created for the pty
+   */
+  void setUsePty(Communication comm, bool addUtmp);
+
+  /**
+   * Obtains the pty object used by this process. The return value is
+   * valid only after setUsePty() was used with a non-zero argument.
+   * The pty is open only while the process is running.
+   * @return a pointer to the pty object
+   */
+  KPty *pty() const;
+
+  /**
+   * More or less intuitive constants for use with setPriority().
+   */
+  enum { PrioLowest = 20, PrioLow = 10, PrioLower = 5, PrioNormal = 0,
+    PrioHigher = -5, PrioHigh = -10, PrioHighest = -19 };
+
+  /**
+   * Sets the scheduling priority of the process.
+   * @param prio the new priority in the range -20 (high) to 19 (low).
+   * @return false on error; see setpriority(2) for possible reasons.
+   */
+  bool setPriority(int prio);
+
+Q_SIGNALS:
+  /**
+   * Emitted after the process has terminated when
+   * the process was run in the @p NotifyOnExit  (==default option to
+   * start() ) or the Block mode.
+   * @param proc a pointer to the process that has exited
+   **/
+  void processExited(K3Process *proc);
+
+
+  /**
+   * Emitted, when output from the child process has
+   * been received on stdout.
+   *
+   * To actually get this signal, the Stdout communication link
+   * has to be turned on in start().
+   *
+   * @param proc a pointer to the process that has received the output
+   * @param buffer The data received.
+   * @param buflen The number of bytes that are available.
+   *
+   * You should copy the information contained in @p buffer to your private
+   * data structures before returning from the slot.
+   * Example:
+   * \code
+   *     QString myBuf = QLatin1String(buffer, buflen);
+   * \endcode
+   **/
+  void receivedStdout(K3Process *proc, char *buffer, int buflen);
+
+  /**
+   * Emitted when output from the child process has
+   * been received on stdout.
+   *
+   * To actually get this signal, the Stdout communication link
+   * has to be turned on in start() and the
+   * NoRead flag must have been passed.
+   *
+   * You will need to explicitly call resume() after your call to start()
+   * to begin processing data from the child process' stdout.  This is
+   * to ensure that this signal is not emitted when no one is connected
+   * to it, otherwise this signal will not be emitted.
+   *
+   * The data still has to be read from file descriptor @p fd.
+   * @param fd the file descriptor that provides the data
+   * @param len the number of bytes that have been read from @p fd must
+   *  be written here
+   **/
+  void receivedStdout(int fd, int &len); // KDE4: change, broken API
+
+
+  /**
+   * Emitted, when output from the child process has
+   * been received on stderr.
+   *
+   * To actually get this signal, the Stderr communication link
+   * has to be turned on in start().
+   *
+   * You should copy the information contained in @p buffer to your private
+   * data structures before returning from the slot.
+   *
+   * @param proc a pointer to the process that has received the data
+   * @param buffer The data received.
+   * @param buflen The number of bytes that are available.
+   **/
+  void receivedStderr(K3Process *proc, char *buffer, int buflen);
+
+  /**
+   * Emitted after all the data that has been
+   * specified by a prior call to writeStdin() has actually been
+   * written to the child process.
+   * @param proc a pointer to the process
+   **/
+  void wroteStdin(K3Process *proc);
+
+
+protected Q_SLOTS:
+
+ /**
+  * This slot gets activated when data from the child's stdout arrives.
+  * It usually calls childOutput().
+  * @param fdno the file descriptor for the output
+  */
+  void slotChildOutput(int fdno);
+
+ /**
+  * This slot gets activated when data from the child's stderr arrives.
+  * It usually calls childError().
+  * @param fdno the file descriptor for the output
+  */
+  void slotChildError(int fdno);
+
+  /**
+   * Called when another bulk of data can be sent to the child's
+   * stdin. If there is no more data to be sent to stdin currently
+   * available, this function must disable the QSocketNotifier innot.
+   * @param dummy ignore this argument
+   */
+  void slotSendData(int dummy);	// KDE 4: remove dummy
+
+protected:
+
+  /**
+   * Sets up the environment according to the data passed via
+   * setEnvironment()
+   */
+  void setupEnvironment();
+
+  /**
+   * The list of the process' command line arguments. The first entry
+   * in this list is the executable itself.
+   */
+  QList<QByteArray> arguments;
+  /**
+   * How to run the process (Block, NotifyOnExit, DontCare). You should
+   *  not modify this data member directly from derived classes.
+   */
+  RunMode run_mode;
+  /**
+   * true if the process is currently running. You should not
+   * modify this data member directly from derived classes. Please use
+   * isRunning() for reading the value of this data member since it
+   * will probably be made private in later versions of K3Process.
+   */
+  bool runs;
+
+  /**
+   * The PID of the currently running process.
+   * You should not modify this data member in derived classes.
+   * Please use pid() instead of directly accessing this
+   * member since it will probably be made private in
+   * later versions of K3Process.
+   */
+  pid_t pid_;
+
+  /**
+   * The process' exit status as returned by waitpid(). You should not
+   * modify the value of this data member from derived classes. You should
+   * rather use exitStatus() than accessing this data member directly
+   * since it will probably be made private in further versions of
+   * K3Process.
+   */
+  int status;
+
+
+  /**
+   * If false, the child process' effective uid & gid will be reset to the
+   * real values.
+   * @see setRunPrivileged()
+   */
+  bool keepPrivs;
+
+  /**
+   * This function is called from start() right before a fork() takes
+   * place. According to the @p comm parameter this function has to initialize
+   * the in, out and err data members of K3Process.
+   *
+   * This function should return 1 if setting the needed communication channels
+   * was successful.
+   *
+   * The default implementation is to create UNIX STREAM sockets for the
+   * communication, but you could reimplement this function to establish a
+   * TCP/IP communication for network communication, for example.
+   */
+  virtual int setupCommunication(Communication comm);
+
+  /**
+   * Called right after a (successful) fork() on the parent side. This function
+   * will usually do some communications cleanup, like closing in[0],
+   * out[1] and out[1].
+   *
+   * Furthermore, it must also create the QSocketNotifiers innot,
+   * outnot and errnot and connect their Qt signals to the respective
+   * K3Process slots.
+   *
+   * For a more detailed explanation, it is best to have a look at the default
+   * implementation in kprocess.cpp.
+   */
+  virtual int commSetupDoneP();
+
+  /**
+   * Called right after a (successful) fork(), but before an exec() on the child
+   * process' side. It usually duplicates the in[0], out[1] and
+   * err[1] file handles to the respective standard I/O handles.
+   */
+  virtual int commSetupDoneC();
+
+
+  /**
+   * Immediately called after a successfully started process in NotifyOnExit
+   * mode has exited. This function normally calls commClose()
+   * and emits the processExited() signal.
+   * @param state the exit code of the process as returned by waitpid()
+   */
+  virtual void processHasExited(int state);
+
+  /**
+   * Cleans up the communication links to the child after it has exited.
+   * This function should act upon the values of pid() and runs.
+   * See the kprocess.cpp source for details.
+   * @li If pid() returns zero, the communication links should be closed
+   *  only.
+   * @li if pid() returns non-zero and runs is false, all data
+   *  immediately available from the communication links should be processed
+   *  before closing them.
+   * @li if pid() returns non-zero and runs is true, the communication
+   *  links should be monitored for data until the file handle returned by
+   *  K3ProcessController::theKProcessController->notifierFd() becomes ready
+   *  for reading - when it triggers, runs should be reset to false, and
+   *  the function should be immediately left without closing anything.
+   *
+   * The previous semantics of this function are forward-compatible, but should
+   * be avoided, as they are prone to race conditions and can cause K3Process
+   * (and thus the whole program) to lock up under certain circumstances. At the
+   * end the function closes the communication links in any case. Additionally
+   * @li if runs is true, the communication links are monitored for data
+   *  until all of them have returned EOF. Note that if any system function is
+   *  interrupted (errno == EINTR) the polling loop should be aborted.
+   * @li if runs is false, all data immediately available from the
+   *  communication links is processed.
+   */
+  virtual void commClose();
+
+  /* KDE 4 - commClose will be changed to perform cleanup only in all cases *
+   * If @p notfd is -1, all data immediately available from the
+   *  communication links should be processed.
+   * If @p notfd is not -1, the communication links should be monitored
+   *  for data until the file handle @p notfd becomes ready for reading.
+   */
+//  virtual void commDrain(int notfd);
+
+  /**
+   * Specify the actual executable that should be started (first argument to execve)
+   * Normally the the first argument is the executable but you can
+   * override that with this function.
+   */
+  void setBinaryExecutable(const char *filename);
+
+  /**
+   * The socket descriptors for stdout.
+   */
+  int out[2];
+  /**
+   * The socket descriptors for stdin.
+   */
+  int in[2];
+  /**
+   * The socket descriptors for stderr.
+   */
+  int err[2];
+
+  /**
+   * The socket notifier for in[1].
+   */
+  QSocketNotifier *innot;
+  /**
+   * The socket notifier for out[0].
+   */
+  QSocketNotifier *outnot;
+  /**
+   * The socket notifier for err[0].
+   */
+  QSocketNotifier *errnot;
+
+  /**
+   * Lists the communication links that are activated for the child
+   * process.  Should not be modified from derived classes.
+   */
+  Communication communication;
+
+  /**
+   * Called by slotChildOutput() this function copies data arriving from
+   * the child process' stdout to the respective buffer and emits the signal
+   * receivedStdout().
+   */
+  int childOutput(int fdno);
+
+  /**
+   * Called by slotChildError() this function copies data arriving from
+   * the child process' stderr to the respective buffer and emits the signal
+   * receivedStderr().
+   */
+  int childError(int fdno);
+
+  /**
+   * The buffer holding the data that has to be sent to the child
+   */
+  const char *input_data;
+  /**
+   * The number of bytes already transmitted
+   */
+  int input_sent;
+  /**
+   * The total length of input_data
+   */
+  int input_total;
+
+  /**
+   * K3ProcessController is a friend of K3Process because it has to have
+   * access to various data members.
+   */
+  friend class K3ProcessController;
+
+private:
+  K3ProcessPrivate* const d;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(K3Process::Communication)
+
+class K3ShellProcessPrivate;
+
+/**
+* @obsolete
+*
+* Use K3Process and K3Process::setUseShell(true) instead.
+*
+*   @short A class derived from K3Process to start child
+*   	processes through a shell.
+*   @author Christian Czezatke <e9025461@student.tuwien.ac.at>
+*/
+class K3ShellProcess : public K3Process
+{
+  Q_OBJECT
+
+public:
+
+  /**
+   * Constructor
+   *
+   * If no shellname is specified, the user's default shell is used.
+   */
+  explicit K3ShellProcess(const char *shellname=0);
+
+  /**
+   * Destructor.
+   */
+  ~K3ShellProcess();
+
+  virtual bool start(RunMode  runmode = NotifyOnExit,
+		  Communication comm = NoCommunication);
+
+  static QString quote(const QString &arg);
+
+private:
+  K3ShellProcessPrivate* const d;
+};
+
+
+
+#endif
+