Diffstat (limited to 'libopie2/opiecore/oprocess.h') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | libopie2/opiecore/oprocess.h | 152 |
1 files changed, 76 insertions, 76 deletions
diff --git a/libopie2/opiecore/oprocess.h b/libopie2/opiecore/oprocess.h index 8dd19b5..352485b 100644 --- a/libopie2/opiecore/oprocess.h +++ b/libopie2/opiecore/oprocess.h @@ -1,51 +1,55 @@ -/* This file is part of the KDE libraries - Copyright (C) 1997 Christian Czezakte (e9025461@student.tuwien.ac.at) - - 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. +/* + This file is part of the Opie Project + Copyright (C) 2003-2004 Holger Freyther <zecke@handhelds.org> + Copyright (C) The Opie Team <opie-devel@handhelds.org> + =. Based on KProcess (C) 1997 Christian Czezatke (e9025461@student.tuwien.ac.at) + .=l. + .>+-= +_;:, .> :=|. This program is free software; you can +.> <`_, > . <= redistribute it and/or modify it under +:`=1 )Y*s>-.-- : the terms of the GNU Library General Public +.="- .-=="i, .._ License as published by the Free Software +- . .-<_> .<> Foundation; either version 2 of the License, + ._= =} : or (at your option) any later version. + .%`+i> _;_. + .i_,=:_. -<s. This program 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ -// -// KPROCESS -- A class for handling child processes in KDE without -// having to take care of Un*x specific implementation details -// -// version 0.3.1, Jan 8th 1998 -// -// (C) Christian Czezatke -// e9025461@student.tuwien.ac.at -// Ported by Holger Freyther to the Open Palmtop Integrated Environment -// - -#ifndef __kprocess_h__ -#define __kprocess_h__ +#ifndef OPROCESS_H +#define OPROCESS_H + +/* QT */ +#include <qcstring.h> +#include <qobject.h> +#include <qvaluelist.h> + +/* STD */ #include <sys/types.h> // for pid_t #include <sys/wait.h> #include <signal.h> #include <unistd.h> -#include <qvaluelist.h> -#include <qcstring.h> -#include <qobject.h> class QSocketNotifier; class OProcessPrivate; /** * Child process invocation, monitoring and control. * * @sect General usage and features * *This class allows a KDE and OPIE application to start child processes without having *to worry about UN*X signal handling issues and zombie process reaping. * @@ -132,25 +136,25 @@ class OProcessPrivate; * *@li void @ref receivedStdout(OProcess *proc, char *buffer, int buflen); *@li void @ref receivedStderr(OProcess *proc, char *buffer, int buflen); *@li -- Indicates that new data has arrived from either the *child process's stdout or stderr. * *@li void @ref wroteStdin(OProcess *proc); *@li -- Indicates that all data that has been sent to the child process *by a prior call to @ref writeStdin() has actually been transmitted to the *client . * *@author Christian Czezakte e9025461@student.tuwien.ac.at - * + *@author Holger Freyther (Opie Port) * **/ class OProcess : public QObject { Q_OBJECT public: /** * Modes in which the communication channel can be opened. * * If communication for more than one channel is required, @@ -178,86 +182,86 @@ public: /** * The application is notified when the subprocess dies. */ NotifyOnExit, /** * The application is suspended until the started process is finished. */ Block }; /** * Constructor */ - OProcess(QObject *parent = 0, const char *name = 0); + OProcess( QObject *parent = 0, const char *name = 0 ); /** * Constructor */ - OProcess(const QString &arg0, QObject *parent = 0, const char *name = 0); + OProcess( const QString &arg0, QObject *parent = 0, const char *name = 0 ); /** * Constructor */ - OProcess(const QStringList &args, QObject *parent = 0, const char *name = 0); + OProcess( const QStringList &args, QObject *parent = 0, const char *name = 0 ); /** *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 ~OProcess(); /** @deprecated The use of this function is now deprecated. -- Please use the "operator<<" instead of "setExecutable". Sets the executable to be started with this OProcess object. Returns false if the process is currently running (in that case the executable remains unchanged.) @see operator<< */ - bool setExecutable(const QString& proc); + bool setExecutable( const QString& proc ); /** * 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: * <pre> * OProcess p; * ... * p << "ls" << "-l" << "/usr/local/bin" * </pre> * **/ - OProcess &operator<<(const QString& arg); + OProcess &operator<<( const QString& arg ); /** * Similar to previous method, takes a char *, supposed to be in locale 8 bit already. */ - OProcess &operator<<(const char * arg); + OProcess &operator<<( const char * arg ); /** * Similar to previous method, takes a QCString, supposed to be in locale 8 bit already. */ - OProcess &operator<<(const QCString & arg); + OProcess &operator<<( const QCString & arg ); /** * Sets the executable and the command line argument list for this process, * in a single method call, or add a list of arguments. **/ - OProcess &operator<<(const QStringList& args); + OProcess &operator<<( const QStringList& args ); /** * Clear a command line argument list that has been set by using * the "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 OProcess class. @@ -269,34 +273,34 @@ public: * @li The command line argument list is empty. * @li The starting of the process failed (could not fork). * @li The executable was not found. * * @param comm Specifies which communication links 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); + 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 @p true if the signal was delivered successfully. */ - virtual bool kill(int signo = SIGTERM); + virtual bool kill( int signo = SIGTERM ); /** @return @p 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 OProcess. * @@ -324,25 +328,25 @@ public: */ bool normalExit() const; /** * Returns the exit status of the process. * * Please use * @ref OProcess::normalExit() to check whether the process has exited * cleanly (i.e., @ref OProcess::normalExit() returns @p true) before calling * this function because if the process did not exit normally, * it does not have a valid exit status. */ - int exitStatus() const; + int exitStatus() const; /** * Transmit data to the child process's stdin. * * OProcess::writeStdin may return false in the following cases: * * @li The process is not currently running. * * @li Communication to stdin has not been requested in the @ref start() call. * * @li Transmission of data to the child process by a previous call to @@ -351,25 +355,25 @@ public: * 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. * * If all the data has been sent to the client, the signal * @ref wroteStdin() will be emitted. * * Please note that you must not free "buffer" or call @ref writeStdin() * again until either a @ref wroteStdin() signal indicates that the * data has been sent or a @ref processHasExited() signal shows that * the child process is no longer alive... **/ - bool writeStdin(const char *buffer, int buflen); + bool writeStdin( const char *buffer, int buflen ); void flushStdin(); /** * This causes the stdin file descriptor of the child process to be * closed indicating an "EOF" to the child. * * @return @p false if no communication to the process's stdin * had been specified in the call to @ref start(). */ bool closeStdin(); @@ -386,175 +390,175 @@ public: * This causes the stderr file descriptor of the child process to be * closed. * * @return @p false if no communication to the process's stderr * had been specified in the call to @ref start(). */ bool closeStderr(); /** * Lets you see what your arguments are for debugging. */ - const QValueList<QCString> &args() { return arguments; } + const QValueList<QCString> &args() + { + return arguments; + } /** * Controls whether the started process should drop any * setuid/segid privileges or whether it should keep them * * The default is @p false : drop privileges */ - void setRunPrivileged(bool keepPrivileges); + void setRunPrivileged( bool keepPrivileges ); /** * Returns whether the started process will drop any * setuid/segid privileges or whether it will keep them */ bool runPrivileged() const; /** * Modifies the environment of the process to be started. * This function must be called before starting the process. */ - void setEnvironment(const QString &name, const QString &value); + 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. */ - void setWorkingDirectory(const QString &dir); + 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, the standard shell is used. * @p quote A flag indicating whether to quote the arguments. * * When using a shell, the caller should make sure that all filenames etc. * are properly quoted when passed as argument. * @see quote() */ - void setUseShell(bool useShell, const char *shell = 0); + 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. */ - static QString quote(const QString &arg); + static QString quote( const QString &arg ); /** * Detaches OProcess from child process. All communication is closed. * No exit notification is emitted any more for the child process. * Deleting the OProcess will no longer kill the child process. * Note that the current process remains the parent process of the * child process. */ void detach(); - - signals: /** * Emitted after the process has terminated when * the process was run in the @p NotifyOnExit (==default option to * @ref start()) or the @ref Block mode. **/ - void processExited(OProcess *proc); + void processExited( OProcess *proc ); /** * Emitted, when output from the child process has * been received on stdout. * * To actually get * these signals, the respective communication link (stdout/stderr) * has to be turned on in @ref start(). * * @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 this slot. **/ - void receivedStdout(OProcess *proc, char *buffer, int buflen); + void receivedStdout( OProcess *proc, char *buffer, int buflen ); /** * Emitted when output from the child process has * been received on stdout. * * To actually get these signals, the respective communications link * (stdout/stderr) has to be turned on in @ref start() and the * @p NoRead flag should have been passed. * * You will need to explicitly call resume() after your call to start() * to begin processing data from the child process's 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. **/ - void receivedStdout(int fd, int &len); + void receivedStdout( int fd, int &len ); /** * Emitted, when output from the child process has * been received on stderr. * To actually get * these signals, the respective communication link (stdout/stderr) * has to be turned on in @ref start(). * * @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 this slot. */ - void receivedStderr(OProcess *proc, char *buffer, int buflen); + void receivedStderr( OProcess *proc, char *buffer, int buflen ); /** * Emitted after all the data that has been * specified by a prior call to @ref writeStdin() has actually been * written to the child process. **/ - void wroteStdin(OProcess *proc); - + void wroteStdin( OProcess *proc ); protected slots: /** * This slot gets activated when data from the child's stdout arrives. * It usually calls "childOutput" */ - void slotChildOutput(int fdno); + void slotChildOutput( int fdno ); /** * This slot gets activated when data from the child's stderr arrives. * It usually calls "childError" */ - void slotChildError(int fdno); + void slotChildError( int fdno ); /* Slot functions for capturing stdout and stderr of the child */ /** * 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". */ - void slotSendData(int dummy); + void slotSendData( int 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. @@ -615,25 +619,25 @@ protected: * This function is called from "OProcess::start" right before a "fork" takes * place. According to * the "comm" parameter this function has to initialize the "in", "out" and * "err" data member of OProcess. * * This function should return 0 if setting the needed communication channels * was successful. * * The default implementation is to create UNIX STREAM sockets for the communication, * but you could overload this function and establish a TCP/IP communication for * network communication, for example. */ - virtual int setupCommunication(Communication comm); + 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 the reading end * of the "stdin" communication channel. * * Furthermore, it must also create the QSocketNotifiers "innot", "outnot" and * "errnot" and connect their Qt slots to the respective OProcess member functions. * * For a more detailed explanation, it is best to have a look at the default * implementation of "setupCommunication" in kprocess.cpp. */ @@ -645,103 +649,99 @@ protected: * "in", "out" and "err" (like the writing end of the "in" communication * channel. */ virtual int commSetupDoneC(); /** * Immediately called after a process has exited. This function normally * calls commClose to close all open communication channels to this * process and emits the "processExited" signal (if the process was * not running in the "DontCare" mode). */ - virtual void processHasExited(int state); + virtual void processHasExited( int state ); /** * Should clean up the communication links to the child after it has * exited. Should be called from "processHasExited". */ virtual void commClose(); /** * the socket descriptors for stdin/stdout/stderr. */ - int out[2]; - int in[2]; - int err[2]; + int out[ 2 ]; + int in[ 2 ]; + int err[ 2 ]; /** * The socket notifiers for the above socket descriptors. */ QSocketNotifier *innot; QSocketNotifier *outnot; 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's stdout to the respective buffer and emits the signal * "@ref receivedStderr". */ - int childOutput(int fdno); + int childOutput( int fdno ); /** * Called by "slotChildOutput" this function copies data arriving from the * child process's stdout to the respective buffer and emits the signal * "@ref receivedStderr" */ - int childError(int fdno); + int childError( int fdno ); // information about the data that has to be sent to the child: const char *input_data; // the buffer holding the data int input_sent; // # of bytes already transmitted int input_total; // total length of input_data /** * @ref OProcessController is a friend of OProcess because it has to have * access to various data members. */ friend class OProcessController; - private: /** * Searches for a valid shell. * Here is the algorithm used for finding an executable shell: * * @li Try the executable pointed to by the "SHELL" environment * variable with white spaces stripped off * * @li If your process runs with uid != euid or gid != egid, a shell * not listed in /etc/shells will not used. * * @li If no valid shell could be found, "/bin/sh" is used as a last resort. */ QCString searchShell(); /** * Used by @ref searchShell in order to find out whether the shell found * is actually executable at all. */ - bool isExecutable(const QCString &filename); + bool isExecutable( const QCString &filename ); // Disallow assignment and copy-construction OProcess( const OProcess& ); OProcess& operator= ( const OProcess& ); private: void init ( ); - OProcessPrivate *d; }; - - #endif |