programsensor.cpp

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/***************************************************************************
 *   Copyright (C) 2003 by Hans Karlsson                                   *
 *   karlsson.h@home.se                                                      *
 *                                                                         *
 *   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.                                   *
 ***************************************************************************/
#include "programsensor.h"

#include <qstringlist.h>
ProgramSensor::ProgramSensor(QString progName, int interval, QString encoding )
        : Sensor( interval )
{
        ksp = new KProcess;
        if( encoding != "" )
        {
                codec = QTextCodec::codecForName( encoding );
                if ( codec == 0)
                codec = QTextCodec::codecForLocale();
        }
        else{
                codec = QTextCodec::codecForLocale();
        }
        ksp->setUseShell(true, "/bin/bash");
        programName = progName;
        connect(ksp, SIGNAL(receivedStdout(KProcess *, char *, int )),
                this,SLOT(receivedStdout(KProcess *, char *, int )));
        connect(ksp, SIGNAL(processExited(KProcess *)),
                this,SLOT(processExited( KProcess * )));
}

ProgramSensor::~ProgramSensor()
{}

void ProgramSensor::receivedStdout(KProcess *, char *buffer, int len)
{
        kdDebug("ProgramSensor") << "Recieving data from " << programName << endl;
        buffer[len] = 0;
        sensorResult += codec->toUnicode( QCString(buffer) );
}

void ProgramSensor::processExited(KProcess *)
{
        kdDebug("ProgramSensor") << "Program " << programName << " exited." << endl;
        int lineNbr;
        SensorParams *sp;
        Meter *meter;
        QValueVector<QString> lines;
        QStringList stringList = QStringList::split('\n',sensorResult,true);
        for ( QStringList::Iterator it = stringList.begin(); it != stringList.end(); ++it )
        {
                lines.push_back(*it);
        }
        
        int count = (int) lines.size();
        QObjectListIt it( *objList );
        while (it != 0)
        {
                sp = (SensorParams*)(*it);
                meter = sp->getMeter();
                if( meter != 0)
                {
                lineNbr = (sp->getParam("LINE")).toInt();
                if ( lineNbr >= 1  && lineNbr <=  (int) count )
                {
                        meter->setValue(lines[lineNbr-1]);
                }
                if ( -lineNbr >= 1 && -lineNbr <= (int) count )
                {
                        meter->setValue(lines[count+lineNbr]);
                }
                if (lineNbr == 0)
                {
                        meter->setValue(sensorResult);
                }
                }
                ++it;
        }
        
        sensorResult = "";
}

void ProgramSensor::update()
{
        ksp->clearArguments();
        *ksp << programName;
        if(ksp->start( KProcIO::NotifyOnExit,KProcIO::Stdout)){
                kdDebug("ProgramSensor") << "Starting program: " << programName << endl;
        }
        else{
                kdDebug("ProgramSensor") << "Can't start program: " << programName << endl;
        }
}

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