workspace/libs/ksysguard/lsofui/lsof.cpp

   1 #include <QString>
   2 #include <QProcess>
   3 #include <klocale.h>
   4
   5 #include "lsof.h"
   6
   7 struct KLsofWidgetPrivate {
   8         qlonglong pid;
   9         QProcess *process;
  10 };
  11
  12 KLsofWidget::KLsofWidget(QWidget *parent) : QTreeWidget(parent), d(new KLsofWidgetPrivate)
  13 {
  14         d->pid = -1;
  15         setColumnCount(3);
  16         setUniformRowHeights(true);
  17         setRootIsDecorated(false);
  18         setItemsExpandable(false);
  19         setSortingEnabled(true);
  20         setAllColumnsShowFocus(true);
  21         setHeaderLabels(QStringList() << i18nc("Short for File Descriptor", "FD") << i18n("Type") << i18n("Object"));
  22         d->process = new QProcess(this);
  23         connect(d->process, SIGNAL(finished ( int, QProcess::ExitStatus)), this, SLOT(finished(int, QProcess::ExitStatus)));
  24 }
  25
  26 KLsofWidget::~KLsofWidget()
  27 {
  28         delete d;
  29 }
  30
  31 qlonglong KLsofWidget::pid() const
  32 {
  33         return d->pid;
  34 }
  35
  36 void KLsofWidget::setPid(qlonglong pid) {
  37         d->pid = pid;
  38         update();
  39 }
  40
  41 bool KLsofWidget::update()
  42 {
  43         clear();
  44         QStringList args;
  45         d->process->waitForFinished();
  46         args << "-Fftn";
  47         if(d->pid > 0)
  48                 args << ("-p" + QString::number(d->pid));
  49         d->process->start("lsof", args);
  50         return true;
  51 }
  52
  53 void KLsofWidget::finished ( int exitCode, QProcess::ExitStatus exitStatus )
  54 {
  55         char buf[1024];
  56         QTreeWidgetItem *process = NULL;
  57         while(true) {
  58                 qint64 lineLength = d->process->readLine(buf, sizeof(buf));
  59
  60                 if(lineLength <= 0)
  61                         break;
  62                 if(buf[lineLength-1] == '\n')
  63                         lineLength--;
  64
  65                 switch(buf[0]) {
  66                         /* Process related stuff */
  67                         case 'f':
  68                                 process = new QTreeWidgetItem(this);
  69                                 process->setText(0,QString::fromUtf8(buf+1, lineLength - 1));
  70                                 break;
  71                         case 't':
  72                                 if(process)
  73                                         process->setText(1,QString::fromUtf8(buf+1, lineLength - 1));
  74                                 break;
  75
  76                         case 'n':
  77                                 if(process)
  78                                         process->setText(2,QString::fromUtf8(buf+1, lineLength - 1));
  79                                 break;
  80                         default:
  81                                 break;
  82                 }
  83         }
  84 }
  85
  86 #include "lsof.moc"