fix for initial start crash when there's no config file

1 files changed, 1 insertions, 0 deletions

diff --git a/noncore/apps/opie-reader/QTReader.cpp b/noncore/apps/opie-reader/QTReader.cpp
index fc9cffb..6335ea2 100644
--- a/noncore/apps/opie-reader/QTReader.cpp
+++ b/noncore/apps/opie-reader/QTReader.cpp
@@ -548,256 +548,257 @@ void QTReader::ChangeFont(int tgt)
     m_textsize = best;
     fontsizes[i] = 0;
     setfont(NULL);
     QFont font(m_fontname, fontsizes[m_textsize], (m_bBold) ? QFont::Bold : QFont::Normal );
     if (m_fm == NULL)
     {
   m_fm = new QFontMetrics(font);
   buffdoc.setfm(m_fm);
     }
 }
 
 void QTReader::init()
 {
   //    setCaption( "Qt Draw Demo Application" );
 
   setBackgroundColor( white );
 //  QPainter p(this);
 //  p.setBackgroundMode( Qt::OpaqueMode );
   buffdoc.setfilter(getfilter());
   ChangeFont(m_textsize);
   //  setFocusPolicy(QWidget::StrongFocus);
     //    resize( 240, 320 );
   //setFocus();
     timer = new QTimer(this);
     connect(timer, SIGNAL(timeout()), this, SLOT(doscroll()));
 //  QMessageBox::information(this, "init", m_lastfile, 1);
     m_lastwidth = width();
     if (!m_lastfile.isEmpty())
     {
   m_string = DocLnk(m_lastfile).name();
   load_file(m_lastfile);
     }
 }
 
 //
 // Clean up
 //
 QTReader::~QTReader()
 {
     if (fontsizes != NULL) delete [] fontsizes;
 #ifndef QT_NO_PRINTER
   //    delete printer;
 #endif
 }
 
 //
 // Calls the drawing function as specified by the radio buttons.
 //
 
 void QTReader::drawIt( QPainter *p )
 {
     drawFonts(p);
 }
 
 //
 // Called when the print button is clicked.
 //
 /*
 void QTReader::printIt()
 {
 #ifndef QT_NO_PRINTER
     if ( printer->setup( this ) ) {
         QPainter paint;
         if ( !paint.begin( printer ) )
             return;
         drawIt( &paint );
     }
 #endif
 }
 */
 //
 // Called when the widget needs to be updated.
 //
 
 void QTReader::paintEvent( QPaintEvent * )
 {
     QPainter paint( this );
     drawIt( &paint );
 }
 
 //
 // Called when the widget has been resized.
 // Moves the button group to the upper right corner
 // of the widget.
 
 /*
 void QTReader::resizeEvent( QResizeEvent * )
 {
   //  qDebug("resize:(%u,%u)", width(), height());
   //    bgroup->move( width()-bgroup->width(), 0 );
 }
 */
 
 //
 // Create and display our widget.
 //
 /*
 int main( int argc, tchar **argv )
 {
     QApplication app( argc, argv );
     QTReader   draw;
     app.setMainWidget( &draw );
     draw.setCaption("Qt Example - Drawdemo");
     draw.show();
     return app.exec();
 }
 */
 
 
 bool QTReader::locate(unsigned long n) {
   //printf("Locate\n");
   buffdoc.locate(n);
   //  qDebug("&buffdoc.located");
   fillbuffer();
   //  qDebug("&Buffer filled");
   update();
   //  qDebug("&Located");
   return true;
 }
 
 unsigned int QTReader::screenlines()
 {
   //  int linespacing = (tight) ? m_ascent : m_ascent+m_descent;
   //  return (height()-m_descent)/(m_linespacing);
   return (height()-2)/(m_linespacing);
 };
 
 bool QTReader::fillbuffer() {
+  if (buffdoc.empty()) return false;
   //printf("Fillbuffer\n");
     m_scrolldy = 0;
   int ch;
   bool ret = false;
   int delta = screenlines();
   //  qDebug("fillbuffer:%u-%u",delta,numlines);
   if (delta != numlines)
     {
       if (textarray != NULL)
   {
     for (int i = 0; i < numlines; i++) delete textarray[i];
     delete [] textarray;
           delete [] locnarray;
   }
       numlines = delta;
       textarray = new CBuffer*[numlines];
       locnarray = new size_t[numlines];
       for (int i = 0; i < numlines; i++) textarray[i] = new CBuffer;
     }
   //  qDebug("fillbuffer:pagepos:%u",pagepos);
   unsigned int oldpagepos = pagepos;
 //  if (textarray != NULL)
 //      pagepos = locnarray[0];
 //  else
   pagepos = locate();
   for (int i = 0; i < delta; i++)
     {
       locnarray[i] = locate();
       ch = getline(textarray[i]);
       //      if (ch == EOF) {
       if (!ch)
   {
     if (i == 0)
       {
           locate(oldpagepos);
         return false;
       }
     else
       {
         ret = true;
         for (int j = i+1; j < delta; j++)
                 {
                   locnarray[j] = locnarray[j-1];
                   (*(textarray[j]))[0] = '\0';
                 }
         break;
       }
   }
       if (ch == '\012') ret = true;
     }
   mylastpos = locate();
   //  qDebug("fillbuffer:lastpos:%u",mylastpos);
   return true;
 }
 
 
 void QTReader::dopagedn()
 {
     if (m_overlap == 0)
     {
   if (locate() != mylastpos) jumpto(mylastpos);
     }
     else
     {
   if (m_overlap >= screenlines()) m_overlap = screenlines()/2;
   jumpto(locnarray[screenlines()-m_overlap]);
     }
     if (fillbuffer())
     {
   update();
     }
 }
 
 void QTReader::dopageup()
 {
   CBuffer** buff = textarray;
   unsigned int *loc = new unsigned int[numlines];
   int cbptr = 0;
   if (locate() != mylastpos) jumpto(mylastpos);
   if (m_overlap >= screenlines()) m_overlap = screenlines()/2;
   unsigned int target = locnarray[m_overlap];
   if (buffdoc.hasrandomaccess())
     {
       unsigned int delta = locate()-pagelocate();
       if (delta < 64) delta = 64;
       if (delta % 2 != 0) delta++;
       if (target % 2 != 0) target++;
       do
   {
     delta <<= 1;
     if (delta >= target)
       {
         delta = target;
         jumpto(0);
         for (int i = 0; i < numlines; i++)
     {
       loc[i] = locate();
       getline(buff[i]);
     }
         break;
       }
     jumpto(target-delta);
     do
       {
         getline(buff[0]);
 #ifdef WS
         //printf("Trying:%s\n",buff[0]);
 #endif
         if (locate() > target) continue;
       }
     while (!buffdoc.iseol());
     for (int i = 0; i < numlines; i++)
       {
         loc[i] = locate();
         getline(buff[i]);
 #ifdef WS
         //printf("Filling:%s\n",buff[i]);
 #endif
       }
   }
       while (locate() >= target && delta < 4096);
 #ifdef WS
       //printf("Delta:%u\n",delta);
 #endif
     }
   else
     {
       jumpto(0);