rhbz#1116534 crash when pasting over a formula

When pasting CSV data into existing document, we cannot use the
ScImportExport optimization for insertion, because the cells can already
have content (a grouped formula in this case). So use appropriate
ScDocument functions, even if that means the import is slower.

This is a regression from commit 93959db4d8846cfdfb87ab647c4d457fb09bb869
"use DocumentImport for csv import, related fdo#69006".

Change-Id: I92f70abca0542d796e3aa674b28a31053fff00d0
(cherry picked from commit bf97980c8d5d5fbc63a08b8834c10fe903152b75)

3 files changed, 52 insertions, 23 deletions

diff --git a/sc/source/ui/docshell/impex.cxx b/sc/source/ui/docshell/impex.cxx
index ca4a6ef912a1..a8cc074f6c89 100644
--- a/sc/source/ui/docshell/impex.cxx
+++ b/sc/source/ui/docshell/impex.cxx
@@ -85,7 +85,8 @@ ScImportExport::ScImportExport( ScDocument* p )
       bFormulas( false ), bIncludeFiltered( true ),
       bAll( true ), bSingle( true ), bUndo( false ),
       bOverflowRow( false ), bOverflowCol( false ), bOverflowCell( false ),
-      mbApi( true ), mbImportBroadcast(false), mExportTextOptions()
+      mbApi( true ), mbImportBroadcast(false), mbOverwriting( false ),
+      mExportTextOptions()
 {
     pUndoDoc = NULL;
     pExtOptions = NULL;
@@ -99,7 +100,8 @@ ScImportExport::ScImportExport( ScDocument* p, const ScAddress& rPt )
       bFormulas( false ), bIncludeFiltered( true ),
       bAll( false ), bSingle( true ), bUndo( pDocSh != NULL ),
       bOverflowRow( false ), bOverflowCol( false ), bOverflowCell( false ),
-      mbApi( true ), mbImportBroadcast(false), mExportTextOptions()
+      mbApi( true ), mbImportBroadcast(false), mbOverwriting( false ),
+      mExportTextOptions()
 {
     pUndoDoc = NULL;
     pExtOptions = NULL;
@@ -114,7 +116,8 @@ ScImportExport::ScImportExport( ScDocument* p, const ScRange& r )
       bFormulas( false ), bIncludeFiltered( true ),
       bAll( false ), bSingle( false ), bUndo( pDocSh != NULL ),
       bOverflowRow( false ), bOverflowCol( false ), bOverflowCell( false ),
-      mbApi( true ), mbImportBroadcast(false), mExportTextOptions()
+      mbApi( true ), mbImportBroadcast(false), mbOverwriting( false ),
+      mExportTextOptions()
 {
     pUndoDoc = NULL;
     pExtOptions = NULL;
@@ -130,7 +133,8 @@ ScImportExport::ScImportExport( ScDocument* p, const OUString& rPos )
       bFormulas( false ), bIncludeFiltered( true ),
       bAll( false ), bSingle( true ), bUndo( pDocSh != NULL ),
       bOverflowRow( false ), bOverflowCol( false ), bOverflowCell( false ),
-      mbApi( true ), mbImportBroadcast(false), mExportTextOptions()
+      mbApi( true ), mbImportBroadcast(false), mbOverwriting( false ),
+      mExportTextOptions()
 {
     pUndoDoc = NULL;
     pExtOptions = NULL;
@@ -928,7 +932,8 @@ bool ScImportExport::Text2Doc( SvStream& rStrm )
 //  Extended Ascii-Import
 
 static bool lcl_PutString(
-    ScDocumentImport& rDocImport, SCCOL nCol, SCROW nRow, SCTAB nTab, const OUString& rStr, sal_uInt8 nColFormat,
+    ScDocumentImport& rDocImport, bool bUseDocImport,
+    SCCOL nCol, SCROW nRow, SCTAB nTab, const OUString& rStr, sal_uInt8 nColFormat,
     SvNumberFormatter* pFormatter, bool bDetectNumFormat,
     ::utl::TransliterationWrapper& rTransliteration, CalendarWrapper& rCalendar,
     ::utl::TransliterationWrapper* pSecondTransliteration, CalendarWrapper* pSecondCalendar )
@@ -952,17 +957,24 @@ static bool lcl_PutString(
             pDoc->ApplyPattern(nCol, nRow, nTab, aNewAttrs);
 
         }
-        if(ScStringUtil::isMultiline(rStr))
+        if ( bUseDocImport )
         {
-            ScFieldEditEngine& rEngine = pDoc->GetEditEngine();
-            rEngine.SetText(rStr);
-            rDocImport.setEditCell(ScAddress(nCol, nRow, nTab), rEngine.CreateTextObject());
-            return true;
-        }
-        else
+            if(ScStringUtil::isMultiline(rStr))
+            {
+                ScFieldEditEngine& rEngine = pDoc->GetEditEngine();
+                rEngine.SetText(rStr);
+                rDocImport.setEditCell(ScAddress(nCol, nRow, nTab), rEngine.CreateTextObject());
+                return true;
+            }
+            else
+            {
+                rDocImport.setStringCell(ScAddress(nCol, nRow, nTab), rStr);
+                return false;
+            }
+        } else
         {
-            rDocImport.setStringCell(ScAddress(nCol, nRow, nTab), rStr);
-            return false;
+            pDoc->SetTextCell(ScAddress(nCol, nRow, nTab), rStr);
+            return bMultiLine;
         }
     }
 
@@ -976,7 +988,10 @@ static bool lcl_PutString(
         if ( pDocFormatter->IsNumberFormat( rStr, nEnglish, fVal ) )
         {
             // Numberformat will not be set to English
-            rDocImport.setNumericCell( ScAddress( nCol, nRow, nTab ), fVal );
+            if ( bUseDocImport )
+                rDocImport.setNumericCell( ScAddress( nCol, nRow, nTab ), fVal );
+            else
+                pDoc->SetValue( nCol, nRow, nTab, fVal );
             return bMultiLine;
         }
         // else, continue with SetString
@@ -1165,7 +1180,10 @@ static bool lcl_PutString(
                         nFormat = pDocFormatter->GetStandardFormat( fDays, nFormat, nType, eDocLang);
 
                     ScAddress aPos(nCol,nRow,nTab);
-                    rDocImport.setNumericCell(aPos, fDays);
+                    if ( bUseDocImport )
+                        rDocImport.setNumericCell(aPos, fDays);
+                    else
+                        pDoc->SetValue( aPos, fDays );
                     pDoc->SetNumberFormat(aPos, nFormat);
 
                     return bMultiLine;     // success
@@ -1182,14 +1200,20 @@ static bool lcl_PutString(
         aParam.mbDetectNumberFormat = bDetectNumFormat;
         aParam.meSetTextNumFormat = ScSetStringParam::SpecialNumberOnly;
         aParam.mbHandleApostrophe = false;
-        rDocImport.setAutoInput(ScAddress(nCol, nRow, nTab), rStr, &aParam);
+        if ( bUseDocImport )
+            rDocImport.setAutoInput(ScAddress(nCol, nRow, nTab), rStr, &aParam);
+        else
+            pDoc->SetString( nCol, nRow, nTab, rStr, &aParam );
     }
     else
     {
         bMultiLine = true;
         ScFieldEditEngine& rEngine = pDoc->GetEditEngine();
         rEngine.SetText(rStr);
-        rDocImport.setEditCell(ScAddress(nCol, nRow, nTab), rEngine.CreateTextObject());
+        if ( bUseDocImport )
+            rDocImport.setEditCell(ScAddress(nCol, nRow, nTab), rEngine.CreateTextObject());
+        else
+            pDoc->SetEditText( ScAddress( nCol, nRow, nTab ), rEngine.CreateTextObject() );
     }
     return bMultiLine;
 }
@@ -1346,7 +1370,7 @@ bool ScImportExport::ExtText2Doc( SvStream& rStrm )
                                 nFmt = SC_COL_TEXT;
 
                             bMultiLine |= lcl_PutString(
-                                aDocImport, nCol, nRow, nTab, aCell, nFmt,
+                                aDocImport, !mbOverwriting, nCol, nRow, nTab, aCell, nFmt,
                                 &aNumFormatter, bDetectNumFormat, aTransliteration, aCalendar,
                                 pEnglishTransliteration.get(), pEnglishCalendar.get());
                         }
@@ -1389,7 +1413,7 @@ bool ScImportExport::ExtText2Doc( SvStream& rStrm )
                                 nFmt = SC_COL_TEXT;
 
                             bMultiLine |= lcl_PutString(
-                                aDocImport, nCol, nRow, nTab, aCell, nFmt,
+                                aDocImport, !mbOverwriting, nCol, nRow, nTab, aCell, nFmt,
                                 &aNumFormatter, bDetectNumFormat, aTransliteration,
                                 aCalendar, pEnglishTransliteration.get(), pEnglishCalendar.get());
                         }
@@ -1447,13 +1471,14 @@ bool ScImportExport::ExtText2Doc( SvStream& rStrm )
 
         bDetermineRange = !bDetermineRange;     // toggle
     } while (!bDetermineRange);
-    aDocImport.finalize();
+    if ( !mbOverwriting )
+        aDocImport.finalize();
 
     xProgress.reset();    // make room for AdjustRowHeight progress
     if (bRangeIsDetermined)
         EndPaste(false);
 
-    if (mbImportBroadcast)
+    if (mbImportBroadcast && !mbOverwriting)
     {
         pDoc->BroadcastCells(aRange, SC_HINT_DATACHANGED);
         pDocSh->PostDataChanged();
diff --git a/sc/source/ui/inc/impex.hxx b/sc/source/ui/inc/impex.hxx
index 7bd391456d49..22ced95b5e4f 100644
--- a/sc/source/ui/inc/impex.hxx
+++ b/sc/source/ui/inc/impex.hxx
@@ -67,6 +67,9 @@ class ScImportExport
     bool        bOverflowCell;          // too much data for a cell
     bool        mbApi;
     bool        mbImportBroadcast; // whether or not to broadcast after data import.
+    bool        mbOverwriting;  // Whether we could be overwriting existing values (paste).
+                                // In this case we cannot use the insert optimization, but we
+                                // do not need to broadcast after the import.
     ScExportTextOptions mExportTextOptions;
 
     ScAsciiOptions* pExtOptions;        // extended options
@@ -155,6 +158,7 @@ public:
     bool IsApi() const { return mbApi; }
     void SetApi( bool bApi ) { mbApi = bApi; }
     void SetImportBroadcast( bool b ) { mbImportBroadcast = b; }
+    void SetOverwriting( const bool bOverwriting ) { mbOverwriting = bOverwriting; }
     const ScExportTextOptions& GetExportTextOptions() { return mExportTextOptions; }
     void SetExportTextOptions( const ScExportTextOptions& options ) { mExportTextOptions = options; }
 };
diff --git a/sc/source/ui/view/viewfun5.cxx b/sc/source/ui/view/viewfun5.cxx
index 27ff0f4cc561..983a39ed922f 100644
--- a/sc/source/ui/view/viewfun5.cxx
+++ b/sc/source/ui/view/viewfun5.cxx
@@ -293,7 +293,7 @@ bool ScViewFunc::PasteDataFormat( sal_uLong nFormatId,
         {
             ScAddress aCellPos( nPosX, nPosY, GetViewData().GetTabNo() );
             ScImportExport aObj( GetViewData().GetDocument(), aCellPos );
-            aObj.SetImportBroadcast(true);
+            aObj.SetOverwriting( true );
 
             OUString aStr;
             SotStorageStreamRef xStream;