qprocess.h

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** 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 General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
** this exception statement from your version.
** 
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
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**********************************************************************/

#ifndef QPROCESS_H
#define QPROCESS_H

#include <qtopia/qpeglobal.h>

#ifndef QT_H
#include <qobject.h>
#include <qstringlist.h>
#include <qdir.h>
#endif // QT_H

#ifndef QT_NO_PROCESS

class QProcessPrivate;


class QTOPIA_EXPORT QProcess : public QObject
{
    Q_OBJECT
public:
    QProcess( QObject *parent=0, const char *name=0 );
    QProcess( const QString& arg0, QObject *parent=0, const char *name=0 );
    QProcess( const QStringList& args, QObject *parent=0, const char *name=0 );
    ~QProcess();

    // set and get the arguments and working directory
    QStringList arguments() const;
    void clearArguments();
    virtual void setArguments( const QStringList& args );
    virtual void addArgument( const QString& arg );
#ifndef QT_NO_DIR
    QDir workingDirectory() const;
    virtual void setWorkingDirectory( const QDir& dir );
#endif

    // priority
    int priority() const;
    void setPriority(int);

    // set and get the comms wanted
    enum Communication { Stdin=0x01, Stdout=0x02, Stderr=0x04, DupStderr=0x08 };
    void setCommunication( int c );
    int communication() const;

    // start the execution
    virtual bool start( QStringList *env=0 );
    virtual bool launch( const QString& buf, QStringList *env=0  );
    virtual bool launch( const QByteArray& buf, QStringList *env=0  );

    // inquire the status
    bool isRunning() const;
    bool normalExit() const;
    int exitStatus() const;

    // reading
    virtual QByteArray readStdout();
    virtual QByteArray readStderr();
    bool canReadLineStdout() const;
    bool canReadLineStderr() const;
    virtual QString readLineStdout();
    virtual QString readLineStderr();

    // get platform dependent process information
#if defined(Q_OS_WIN32)
    typedef void* PID;
#else
    typedef long Q_LONG;
    typedef Q_LONG PID;
#endif
    PID processIdentifier();

    void flushStdin();

signals:
    void readyReadStdout();
    void readyReadStderr();
    void processExited();
    void wroteToStdin();
    void launchFinished();

public slots:
    // end the execution
    void tryTerminate() const;
    void kill() const;

    // input
    virtual void writeToStdin( const QByteArray& buf );
    virtual void writeToStdin( const QString& buf );
    virtual void closeStdin();

protected: // ### or private?
    void connectNotify( const char * signal );
    void disconnectNotify( const char * signal );
private:
    void setIoRedirection( bool value );
    void setNotifyOnExit( bool value );
    void setWroteStdinConnected( bool value );

    void init();
    void reset();
#if defined(Q_OS_WIN32)
    uint readStddev( HANDLE dev, char *buf, uint bytes );
#endif
    bool scanNewline( bool stdOut, QByteArray *store );

    QByteArray* bufStdout();
    QByteArray* bufStderr();
    void consumeBufStdout( int consume );
    void consumeBufStderr( int consume );

private slots:
    void socketRead( int fd );
    void socketWrite( int fd );
    void timeout();
    void closeStdinLaunch();

private:
    QProcessPrivate *d;
#ifndef QT_NO_DIR
    QDir        workingDir;
#endif
    QStringList _arguments;

    int  exitStat; // exit status
    bool exitNormal; // normal exit?
    bool ioRedirection; // automatically set be (dis)connectNotify
    bool notifyOnExit; // automatically set be (dis)connectNotify
    bool wroteToStdinConnected; // automatically set be (dis)connectNotify

    bool readStdoutCalled;
    bool readStderrCalled;
    int comms;

    friend class QProcessPrivate;
#if defined(Q_OS_UNIX) || defined(_OS_UNIX) || defined(UNIX)
    friend class QProcessManager;
    friend class QProc;
#endif
};

#endif // QT_NO_PROCESS

#endif // QPROCESS_H