Avoid crash if app was unable to open the file

2 files changed, 7 insertions, 3 deletions

diff --git a/noncore/apps/opie-sheet/Excel.cpp b/noncore/apps/opie-sheet/Excel.cpp
index 57aef20..338bc30 100644
--- a/noncore/apps/opie-sheet/Excel.cpp
+++ b/noncore/apps/opie-sheet/Excel.cpp
@@ -400,385 +400,386 @@ bool ExcelSheet::InitCells()
         Cells[r]=NULL;
     };
     return true;
 };
 
 void ExcelSheet::Set(int row, int col, ExcelCell* cell)
 {
     if(cell!=NULL&&(row*cols+col)<Cells.count())
     {
         Cells[row*cols+col]=cell;
     };
 };
 
 ExcelCell* ExcelSheet::Get(int row, int col)
 {
     ExcelCell* cell;
     cell=Cells[row*cols+col];
     if(cell==NULL) return NULL;
     return cell;
 };
 
 int ExcelBook::SheetHandleRecord(ExcelSheet* sheet, ExcelBREC* record)
 {
     char* data=NULL;
     switch (record->code)
     {
     case XL_DIMENSION:
         data = GetDataOfBREC(record);
         if (record->length == 10)
         {
             sheet->rows = Integer2Byte(data[2], data[3]);
             sheet->cols = Integer2Byte(data[6], data[7]);
         }
         else
         {
             sheet->rows = Integer4Byte(data[4], data[5], data[6], data[7]);
             sheet->cols = Integer2Byte(data[10], data[11]);
         }
         sheet->InitCells();
         break;
 
     case XL_LABELSST:
         HandleLabelSST(sheet, record);
         break;
 
     case XL_RK:
     case XL_RK2:
         HandleRK(sheet, record);
         break;
 
     case XL_MULRK:
         HandleMulrk(sheet, record);
         break;
 
     case XL_ROW:
         break;
 
     case XL_NUMBER:
         HandleNumber(sheet, record);
         break;
 
     case XL_BOOLERR:
         break;
 
     case XL_CONTINUE:
         break;
 
     case XL_FORMULA:
     case XL_FORMULA2:
         HandleFormula(sheet, record);
         break;
 
     case XL_LABEL:
         break;
 
     case XL_NAME:
         HandleName(sheet, record);
         break;
 
     case XL_BOF:
         break;
     case XL_EOF:
         return 0;
     default:
         break;
     };
     return 1;
 };
 
 int ExcelBook::ReadSheet(ExcelSheet* sheet)
 {
     ExcelBREC* record;
     int oldpos;
     oldpos = Position;
     SeekPosition(sheet->position);
     record = GetBREC();
     while (record!=NULL)
     {
         if (!SheetHandleRecord(sheet, record)) break;
         record=GetBREC();
     };
     SeekPosition(oldpos);
     return 1;
 };
 
 ExcelSheet* ExcelBook::GetSheet(void)
 {
     ExcelSheet* sh=NULL;
     int type;
     type=SeekBOF();
     Version=type;
     sh=new ExcelSheet;
     if(type)
     {
         sh->type=type;
         sh->position=Position;
         sh->name=QString("");
     };
     if(type==8||type==7)
     {
         ReadSheet(sh);
     };
     return sh;
 };
 
 void ExcelBook::ParseSheets(void)
 {
     int BOFs;
     ExcelBREC* r;
     BOFs=1;
     r=GetBREC();
     while(BOFs)
     {
         r=GetBREC();
         switch(r->code)
         {
         case XL_SST:
             HandleSST(r);
             break;
 
         case XL_TXO:
             break;
         case XL_NAME:
             break;
         case XL_ROW:
             break;
 
         case XL_FORMAT:
             HandleFormat(r);
             break;
 
         case XL_XF:
             HandleXF(r);
             break;
 
         case XL_BOUNDSHEET:
             HandleBoundSheet(r);
             break;
 
         case XL_EXTSST:
             break;
         case XL_CONTINUE:
             break;
 
         case XL_EOF:
             BOFs--;
             break;
 
         default:
             break;
         };
     };
 };
 
 void ExcelBook::GetSheets(void)
 {
     ExcelSheet* sheet;
     Sheets.resize(0);
     sheet=GetSheet();
     while (sheet->Cells.count()!= 0 )
     {
         Sheets.resize(Sheets.count()+1);
         Sheets[Sheets.count()-1]=sheet;
         sheet->name=*Names[Sheets.count()-1];
         sheet=GetSheet();
     };
 };
 
 bool ExcelBook::ParseBook(char *file)
 {
     dateformat=QString("");
     DetectEndian();
-    OpenFile(file);
+    if ( !OpenFile( file ) )
+            return false;
     SeekBOF();
     ParseSheets();
     GetSheets();
     return true;
 };
 
 QString ExcelBook::GetASCII(char* inbytes, int pos, int chars)
 {
     int i;
     QString outstr="";
     for (i = 0; i < chars; i++)
     {
         outstr.append(inbytes[i+pos]);
     };
     return outstr;
 };
 
 QString ExcelBook::GetUnicode(char * inbytes, int pos, int chars)
 {
     QString outstr="";
     int i;
     int rc;
     for (i=0; i<chars*2; i++)
     {
         rc=Integer2Byte(inbytes[i+pos],inbytes[i+pos+1]);
         outstr.append(QChar(rc));
         i++;
     };
     return outstr;
 };
 
 
 void ExcelBook::HandleBoundSheet(ExcelBREC* rec)
 {
     char* data;
     int type;
     int visibility;
     int length;
     int pos;
     QString name;
     pos = 8;
     data   = GetDataOfBREC(rec);
     type = data[4];
     visibility = data[5];
     length = data[6];
     if(data[7]==0)
     {
         //ascii
         name=GetASCII(data,pos,length);
     }
     else
     {
         name=GetUnicode(data,pos,length);
     };
     Names.resize(Names.count()+1);
     Names[Names.count()-1]=new QString(name);
 };
 
 void ExcelBook::HandleName(ExcelSheet* sheet, ExcelBREC* rec)
 {
     char* data;
     QString name;
     int length;
     int pos;
     pos = 15;
     data   = GetDataOfBREC(rec);
     length = data[3];
     name = GetASCII(data,pos,length);
 
 
 };
 
 ExcelFormat* ExcelBook::GetFormatting(int xf)
 {
     int i;
     ExcelFormat* rec;
     rec=new ExcelFormat();
     for (i = 0; formatter[i].code != 0; i++)
     {
         if (xf == formatter[i].code) break;
     };
     if (formatter[i].format ==NULL) return NULL;
     rec->code   = xf;
     rec->type   = formatter[i].type;
     rec->format = formatter[i].format;
     return rec;
 };
 
 void ExcelBook::HandleSetOfSST(ExcelBREC* rec/*, SSTList* cont*/, char* bytes)
 {
     QString str=QString("");
     char* data;
     int chars, pos, options, i;
     int richstring, fareaststring, runlength=0;
     int richruns=0,fareastsize=0;
     int totalstrings;
     int uniquestrings;
     data = GetDataOfBREC(rec);
     totalstrings  = Integer4Byte(data[0], data[1], data[2], data[3]);
     uniquestrings = Integer4Byte(data[4], data[5], data[6], data[7]);
     pos = 8;
     for (i = 0; i < uniquestrings; i++)
     {
         richruns=0; fareastsize=0;
         chars = Integer2Byte(data[pos], data[pos+1]);
         pos += 2;
         options = data[pos];
         pos++;
         fareaststring = ((options & 0x04) != 0);
         richstring     = ((options & 0x08) != 0);
         if(richstring)
         {
             richruns= Integer2Byte(data[pos],data[pos+1]);
             pos+=2;
         };
         if(fareaststring)
         {
             fareastsize=Integer4Byte(data[pos], data[pos+1], data[pos+2], data[pos+3]);
             pos+=4;
         };
 
         if ((options & 0x01) == 0) //8 bit chars
         {
             /* ascii */
             str = GetASCII(bytes,pos,chars);
             pos=pos+chars;
             if(str[0]=='=') str[0]=' ';
         }else //16 bit chars
         {
             /* unicode */
             str = GetUnicode(bytes,pos,chars);
             pos=pos+chars*2;
         };
         // HERE TO PUT richformat handling
         if (richstring)
         {
             pos += 4 * richruns;
         };
         if (fareaststring)
         {
             pos += fareastsize;
         };
         //printf("String=%s, length=%d first=0x%x\r\n",str.ascii(),str.length(),str[0].unicode());
         SharedStrings.resize(SharedStrings.count()+1);
         SharedStrings[SharedStrings.count()-1]=new QString(str);
     }
 };
 
 
 char* ExcelBook::MergeBytesFromSSTs(ExcelBREC* rec,SSTList* cont)
 {
     int i, pos;
     int length;
 
     char* data;
     char* bytes;
     length = rec->length;
     for (i = 0; i < (int) cont->rec.count(); i++)
     {
         length += cont->rec[i]->length;
     }
     bytes = GetDataOfBREC(rec);
     pos = rec->length;
     for (i = 0; i < (int) cont->rec.count(); i++)
     {
         data = GetDataOfBREC(cont->rec[i]);
         *bytes += pos;
         bytes = data;
         pos += cont->rec[i]->length;
     }
     return bytes;
 };
 
 
 void ExcelBook::HandleSST(ExcelBREC* rec)
 {
     char* bytes;
     SSTList* cont;
     cont= new SSTList;
     ExcelBREC* nr;
     nr = PeekBREC();
     while (nr->code == XL_CONTINUE)
     {
         cont->rec.resize(cont->rec.count()+1);
         cont->rec[cont->rec.count()-1]=GetBREC();
         nr = PeekBREC();
     }
     bytes = MergeBytesFromSSTs(rec,cont);
     HandleSetOfSST(rec, bytes);
     for(int w1=0;w1<(int)cont->rec.count();w1++)
     {
         if(cont->rec[w1]!=NULL) {delete cont->rec[w1];cont->rec[w1]=NULL;};
diff --git a/noncore/apps/opie-sheet/mainwindow.cpp b/noncore/apps/opie-sheet/mainwindow.cpp
index 7394623..3095142 100644
--- a/noncore/apps/opie-sheet/mainwindow.cpp
+++ b/noncore/apps/opie-sheet/mainwindow.cpp
@@ -688,341 +688,344 @@ void MainWindow::addToData(const QString &data)
 {
     editData->setText(editData->text().insert(editData->cursorPosition(), data));
 }
 
 void MainWindow::slotFuncOutput()
 {
     if (sender()->isA("QAction"))
         addToData(((QAction *)sender())->toolTip());
 }
 
 void MainWindow::slotInsertRows()
 {
     NumberDialog dialogNumber(this);
     if (dialogNumber.exec(tr("Insert Rows"), tr("&Number of rows:"))==QDialog::Accepted)
         sheet->insertRows(dialogNumber.getValue());
 }
 
 void MainWindow::slotInsertCols()
 {
     NumberDialog dialogNumber(this);
     if (dialogNumber.exec(tr("Insert Columns"), tr("&Number of columns:"))==QDialog::Accepted)
         sheet->insertColumns(dialogNumber.getValue());
 }
 
 void MainWindow::slotInsertSheets()
 {
     NumberDialog dialogNumber(this);
     if (dialogNumber.exec(tr("Add Sheets"), tr("&Number of sheets:"))==QDialog::Accepted)
         for (int i=dialogNumber.getValue(); i>0; --i) createNewSheet();
 }
 
 void MainWindow::slotCellClicked(const QString &cell)
 {
     editCellSelect->setOn(FALSE);
     addToData(cell);
 }
 
 typeSheet *MainWindow::createNewSheet()
 {
     typeSheet *newSheet=new typeSheet;
     int currentNo=1, tempNo=0;
     bool ok;
 
     for (typeSheet *tempSheet=listSheets.first(); tempSheet; tempSheet=listSheets.next())
         if (tempSheet->name.startsWith(tr("Sheet")) && (tempNo=tempSheet->name.mid(tr("Sheet").length()).toInt(&ok))>=currentNo && ok)
             currentNo=tempNo+1;
 
     newSheet->name=tr("Sheet")+QString::number(currentNo);
     newSheet->data.setAutoDelete(TRUE);
 
     comboSheets->insertItem(newSheet->name);
     listSheets.append(newSheet);
     return newSheet;
 }
 
 typeSheet *MainWindow::findSheet(const QString &name)
 {
     for (typeSheet *tempSheet=listSheets.first(); tempSheet; tempSheet=listSheets.next())
         if (tempSheet->name==name)
             return tempSheet;
     return NULL;
 }
 
 void MainWindow::slotSheetChanged(const QString &name)
 {
     sheet->copySheetData(&findSheet(sheet->getName())->data);
     sheet->setName(name);
     sheet->setSheetData(&findSheet(name)->data);
     sheet->ReCalc();
 }
 
 void MainWindow::addFlyAction(const QString &text, const QString &menuText, const QString &tip, QWidget *w)
 {
     QAction *action=new QAction(text, menuText, 0, this);
     action->setToolTip(tip);
     connect(action, SIGNAL(activated()), this, SLOT(slotFuncOutput()));
     action->addTo(w);
 }
 
 void MainWindow::slotFormatCells()
 {
     CellFormat dialogCellFormat(this);
     QPEApplication::showDialog( &dialogCellFormat );
     dialogCellFormat.exec(sheet);
 }
 
 void MainWindow::slotEditPaste()
 {
     sheet->editPaste();
 }
 
 void MainWindow::slotEditPasteContents()
 {
     sheet->editPaste(TRUE);
 }
 
 void MainWindow::slotRowHeight()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     NumberDialog dialogNumber(this);
     if (dialogNumber.exec(tr("Row Height"), tr("&Height of each row:"), sheet->rowHeight(row1))==QDialog::Accepted)
     {
         int newHeight=dialogNumber.getValue(), row;
         for (row=row1; row<=row2; ++row)
             sheet->setRowHeight(row, newHeight);
     }
 }
 
 void MainWindow::slotRowAdjust()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     for (int row=row1; row<=row2; ++row)
         sheet->adjustRow(row);
 }
 
 void MainWindow::slotRowShow()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     for (int row=row1; row<=row2; ++row)
         sheet->showRow(row);
 }
 
 void MainWindow::slotRowHide()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     for (int row=row1; row<=row2; ++row)
         sheet->hideRow(row);
 }
 
 void MainWindow::slotColumnWidth()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     NumberDialog dialogNumber(this);
     if (dialogNumber.exec(tr("Column Width"), tr("&Width of each column:"), sheet->columnWidth(col1))==QDialog::Accepted)
     {
         int newWidth=dialogNumber.getValue(), col;
         for (col=col1; col<=col2; ++col)
             sheet->setColumnWidth(col, newWidth);
     }
 }
 
 void MainWindow::slotColumnAdjust()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     for (int col=col1; col<=col2; ++col)
         sheet->adjustColumn(col);
 }
 
 void MainWindow::slotColumnShow()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     for (int col=col1; col<=col2; ++col)
         sheet->showColumn(col);
 }
 
 void MainWindow::slotColumnHide()
 {
     int row1, row2, col1, col2;
     sheet->getSelection(&row1, &col1, &row2, &col2);
 
     for (int col=col1; col<=col2; ++col)
         sheet->hideColumn(col);
 }
 
 void MainWindow::slotFileSaveAs()
 {
     TextDialog dialogText(this);
     if (dialogText.exec(tr("Save File As"), tr("&File Name:"), currentDoc->name())!=QDialog::Accepted || dialogText.getValue().isEmpty()) return;
 
     currentDoc->setName(dialogText.getValue());
     currentDoc->setFile(QString::null);
     currentDoc->setLinkFile(QString::null);
     documentSave(currentDoc);
 }
 
 void MainWindow::slotImportExcel(const DocLnk &lnkDoc)
 {
     ExcelBook file1;
-    file1.ParseBook((char *)lnkDoc.file().ascii());
+    if ( !file1.ParseBook((char *)lnkDoc.file().ascii()) ){
+            QMessageBox::critical(this, tr("Error"), tr("<td>Unable to open or parse file!</td>"));
+            return;
+    }
     int NumOfSheets=file1.Sheets.count();
     printf("OpieSheet::NumberOfSheets:%d\r\n",NumOfSheets);
     if (documentModified && saveCurrentFile()==QMessageBox::Cancel) return;
     if (currentDoc) delete currentDoc;
     currentDoc = new DocLnk();
     listSheets.clear();
     comboSheets->clear();
     int w1,r,c;
     ExcelSheet* sh1;
     typeSheet* newSheet;
     QString* str;
     typeCellData* newCell;
     for(w1=1;w1<=NumOfSheets;w1++)
     {
         sh1=file1.Sheets[w1-1];
-        printf("OpieSheet:newSheet:%x,r=%d,c=%d\r\n",sh1,sh1->rows,sh1->cols);
+        // printf("OpieSheet:newSheet:%x,r=%d,c=%d\r\n",sh1, sh1->rows,sh1->cols);
         newSheet=new typeSheet;
         newSheet->data.setAutoDelete(TRUE);
         newSheet->name=sh1->name;
         printf("OpieSheet:Sheetname:%s\r\n",sh1->name.ascii());
         comboSheets->insertItem(newSheet->name);
         for(r=1; r <= sh1->rows; r++)
         {
             for(c=1;c <= sh1->cols; c++)
             {
                 str=file1.CellDataString(sh1,r-1,c-1);
                 if(str!=NULL && r<DEFAULT_NUM_ROWS && c<DEFAULT_NUM_COLS)
                 {
                     newCell=new typeCellData;
                     newCell->row=r-1;
                     newCell->col=c-1;
                     if(str!=NULL) newCell->data=QString(*str); else newCell->data=QString("");
                     newCell->background=QBrush(Qt::white, Qt::SolidPattern);
                     newCell->alignment=(Qt::AlignmentFlags)(Qt::AlignLeft | Qt::AlignTop);
                     newCell->fontColor=Qt::black;
                     newCell->font=font();
                     newCell->borders.right=QPen(Qt::gray, 1, Qt::SolidLine);
                     newCell->borders.bottom=QPen(Qt::gray, 1, Qt::SolidLine);
                     newSheet->data.append(newCell);
                     //there is no format parsing at the moment or style parsing
                     //printf("OpieSheetNumber:row=%d,col=%d,val=%s\r\n",r,c,str->latin1());
                 };
             };
         };
         listSheets.append(newSheet);
         if (w1==1)//if i==0 link sheet1 with sheetview
         {
             sheet->setName(newSheet->name);
             sheet->setSheetData(&newSheet->data);
             sheet->ReCalc();
         };
 
     };
     file1.CloseFile();
     printf("Excel FILE read OK\r\n");
     documentModified=TRUE;
 
 
 }
 
 void MainWindow::slotSheetRename()
 {
     TextDialog dialogText(this);
     if (dialogText.exec(tr("Rename Sheet"), tr("&Sheet Name:"), sheet->getName())!=QDialog::Accepted || dialogText.getValue().isEmpty()) return;
     QString newName=dialogText.getValue();
 
     typeSheet *tempSheet=findSheet(newName);
     if (tempSheet)
     {
         QMessageBox::critical(this, tr("Error"), tr("There is already a sheet named '"+newName+'\''));
         return;
     }
 
     tempSheet=findSheet(sheet->getName());
     for (int i=0; i<comboSheets->count(); ++i)
         if (comboSheets->text(i)==tempSheet->name)
         {
             comboSheets->changeItem(newName, i);
             break;
         }
     tempSheet->name=newName;
     sheet->setName(newName);
 }
 
 void MainWindow::slotSheetRemove()
 {
     if (comboSheets->count()<2)
     {
         QMessageBox::warning(this, tr("Error"), tr("There is only one sheet!"));
         return;
     }
     if (QMessageBox::information(this, tr("Remove Sheet"), tr("Are you sure?"), QMessageBox::Yes, QMessageBox::No)==QMessageBox::Yes)
     {
         typeSheet *tempSheet=findSheet(sheet->getName());
         for (int i=0; i<comboSheets->count(); ++i)
             if (comboSheets->text(i)==tempSheet->name)
             {
                 comboSheets->removeItem(i);
                 break;
             }
         comboSheets->setCurrentItem(0);
         slotSheetChanged(comboSheets->currentText());
         listSheets.remove(tempSheet);
     }
 }
 
 void MainWindow::slotDataSort()
 {
     SortDialog dialogSort(this);
     QPEApplication::showDialog( &dialogSort );
     dialogSort.exec(sheet);
 }
 
 void MainWindow::slotDocModified()
 {
     documentModified=TRUE;
 }
 
 void MainWindow::slotInsertCells()
 {
     QDialog dialogInsert(this, 0, TRUE);
     dialogInsert.resize(180, 130);
     dialogInsert.setCaption(tr("Insert Cells"));
 
     QVButtonGroup *group=new QVButtonGroup(tr("&Type"), &dialogInsert);
     group->setGeometry(10, 10, 160, 110);
     QRadioButton *radio=new QRadioButton(tr("Shift cells &down"), group);
     radio=new QRadioButton(tr("Shift cells &right"), group);
     radio=new QRadioButton(tr("Entire ro&w"), group);
     radio=new QRadioButton(tr("Entire &column"), group);
     group->setButton(0);
 
     if (dialogInsert.exec()==QDialog::Accepted)
         switch (group->id(group->selected()))
         {
         case 0: sheet->insertRows(1, FALSE); break;
         case 1: sheet->insertColumns(1, FALSE); break;
         case 2: sheet->insertRows(1, TRUE); break;
         case 3: sheet->insertColumns(1, TRUE); break;
         }
 }
 
 void MainWindow::slotDataFindReplace()
 {
     FindDialog dialogFind(this);
     QPEApplication::showDialog( &dialogFind );
     dialogFind.exec(sheet);
 }