rbutil/rbutilqt/systrace.cpp

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   9  *   Copyright (C) 2007 by Dominik Riebeling
  10  *   $Id$
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include <QtGui>
  21 #include "systrace.h"
  22 #include "ui_systracefrm.h"
  23
  24 #include "rbsettings.h"
  25
  26 QString SysTrace::debugbuffer;
  27 QString SysTrace::lastmessage;
  28 unsigned int SysTrace::repeat = 0;
  29
  30 SysTrace::SysTrace(QWidget *parent) : QDialog(parent)
  31 {
  32     ui.setupUi(this);
  33     ui.textTrace->setReadOnly(true);
  34     ui.textTrace->setLayoutDirection(Qt::LeftToRight);
  35     refresh();
  36
  37     connect(ui.buttonClose, SIGNAL(clicked()), this, SLOT(close()));
  38     connect(ui.buttonSave, SIGNAL(clicked()), this, SLOT(saveCurrentTrace()));
  39     connect(ui.buttonSavePrevious, SIGNAL(clicked()), this, SLOT(savePreviousTrace()));
  40     connect(ui.buttonRefresh, SIGNAL(clicked()), this, SLOT(refresh()));
  41 }
  42
  43 void SysTrace::refresh(void)
  44 {
  45     int pos = ui.textTrace->verticalScrollBar()->value();
  46     flush();
  47     ui.textTrace->setHtml("<pre>" + debugbuffer + "</pre>");
  48     ui.textTrace->verticalScrollBar()->setValue(pos);
  49     QString oldlog = RbSettings::value(RbSettings::CachePath).toString()
  50                      + "/rbutil-trace.log";
  51     ui.buttonSavePrevious->setEnabled(QFileInfo(oldlog).isFile());
  52 }
  53
  54
  55 void SysTrace::save(QString filename)
  56 {
  57     if(filename.isEmpty())
  58         filename = RbSettings::value(RbSettings::CachePath).toString()
  59                     + "/rbutil-trace.log";
  60     // make sure any repeat detection is flushed
  61     flush();
  62     // append save date to the trace. Append it directly instead of using
  63     // qDebug() as the handler might have been unregistered.
  64     debugbuffer.append("[SysTrace] saving trace at ");
  65     debugbuffer.append(QDateTime::currentDateTime().toString(Qt::ISODate));
  66     debugbuffer.append("\n");
  67     QFile fh(filename);
  68     if(!fh.open(QIODevice::WriteOnly))
  69         return;
  70     fh.write(debugbuffer.toUtf8(), debugbuffer.size());
  71     fh.close();
  72 }
  73
  74 void SysTrace::saveCurrentTrace(void)
  75 {
  76     QString fp = QFileDialog::getSaveFileName(this, tr("Save system trace log"),
  77                         QDir::homePath(), "*.log");
  78     if(!fp.isEmpty())
  79         save(fp);
  80 }
  81
  82
  83 void SysTrace::savePreviousTrace(void)
  84 {
  85     QString fp = QFileDialog::getSaveFileName(this, tr("Save system trace log"),
  86                           QDir::homePath(), "*.log");
  87     if(fp.isEmpty())
  88         return;
  89
  90     QString oldlog = RbSettings::value(RbSettings::CachePath).toString()
  91                      + "/rbutil-trace.log";
  92     QFile::copy(oldlog, fp);
  93     return;
  94 }
  95
  96 void SysTrace::debug(QtMsgType type, const char* msg)
  97 {
  98     (void)type;
  99     if(lastmessage != msg) {
 100         lastmessage = msg;
 101         flush();
 102         debugbuffer.append(msg);
 103         debugbuffer.append("\n");
 104 #if !defined(NODEBUG)
 105         fprintf(stderr, "%s\n", msg);
 106 #endif
 107         repeat = 1;
 108     }
 109     else {
 110         repeat++;
 111     }
 112 }
 113
 114 void SysTrace::flush(void)
 115 {
 116     if(repeat > 1) {
 117         debugbuffer.append(
 118                 QString("    (Last message repeated %1 times.)\n").arg(repeat));
 119 #if !defined(NODEBUG)
 120         fprintf(stderr, "    (Last message repeated %i times.)\n", repeat);
 121 #endif
 122     }
 123 }
 124