fdo#79249 call formula compiler with error string

... instead of attempting to stringize a NaN coded error value.

Regression introduced with 30a20743ae17e6e02183a65603d38968253b3ffb

(cherry picked from commit 994607b55104b9ae4554554c13b001b8d5d513b6)

construct grouped ScFormulaCell with bDirty=true, fdo#79249 related

Noticed when loading
https://bugs.freedesktop.org/attachment.cgi?id=99844
with fdo#79249 fix where oox::xls::applyCellFormulas() groups the
consecutive =#N/A formulas. Only A1 result was displayed, other cells
were displayed empty.

(cherry picked from commit a1dc5e97da273bf35d58d54e625149022569a993)

correct error string, #N/A instead of #NA

(cherry picked from commit 758755e31b3d9e1ed2eab522d4794282178346ac)

implement an actually working setErrorCell() from BIFF error codes

(cherry picked from commit ca9a81b2ca858b82e863e1e6f917928916fea79e)

3a541f74d3d25e1515a1c6d47f02ec6a8e817c93
15019072b6e812b9ffe29d3ee6afacd9ab526948
67b8fc324779875ba14e2d69204c40fe27cc180e
Reviewed-on: https://gerrit.libreoffice.org/13492
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

Conflicts:
sc/source/filter/oox/sheetdatabuffer.cxx

Change-Id: Ia7a8ca39938820ac75db169404446fa696c6ee1b

3 files changed, 18 insertions, 10 deletions

diff --git a/sc/source/filter/inc/unitconverter.hxx b/sc/source/filter/inc/unitconverter.hxx
index 88921d1ceb5b..dbd642403ba1 100644
--- a/sc/source/filter/inc/unitconverter.hxx
+++ b/sc/source/filter/inc/unitconverter.hxx
@@ -88,6 +88,9 @@ public:
     /** Returns a BIFF error code from the passed error string. */
     sal_uInt8           calcBiffErrorCode( const OUString& rErrorCode ) const;
 
+    /** Returns an error string from the passed BIFF error code. */
+    const OUString&     calcErrorString( sal_uInt8 nErrorCode ) const;
+
 private:
     /** Adds an error code to the internal maps. */
     void                addErrorCode( sal_uInt8 nErrorCode, const OUString& rErrorCode );
diff --git a/sc/source/filter/oox/sheetdatabuffer.cxx b/sc/source/filter/oox/sheetdatabuffer.cxx
index 98cf68480316..11c9c7f960a2 100644
--- a/sc/source/filter/oox/sheetdatabuffer.cxx
+++ b/sc/source/filter/oox/sheetdatabuffer.cxx
@@ -216,16 +216,7 @@ void SheetDataBuffer::setErrorCell( const CellModel& rModel, const OUString& rEr
 
 void SheetDataBuffer::setErrorCell( const CellModel& rModel, sal_uInt8 nErrorCode )
 {
-    assert(!"stringizing any NaN will only give 'nan'");
-    /* FIXME: map nErrorCode to error string and call setErrorCell() above. */
-
-    OUStringBuffer aBuf;
-    aBuf.append('{');
-    aBuf.append(BiffHelper::calcDoubleFromError(nErrorCode));
-    aBuf.append('}');
-
-    getFormulaBuffer().setCellFormula(rModel.maCellAddr, aBuf.makeStringAndClear());
-    setCellFormat( rModel );
+    setErrorCell( rModel, getUnitConverter().calcErrorString( nErrorCode));
 }
 
 void SheetDataBuffer::setDateCell( const CellModel& rModel, const OUString& rDateString )
diff --git a/sc/source/filter/oox/unitconverter.cxx b/sc/source/filter/oox/unitconverter.cxx
index 108b248caa94..2eff67678064 100644
--- a/sc/source/filter/oox/unitconverter.cxx
+++ b/sc/source/filter/oox/unitconverter.cxx
@@ -226,6 +226,20 @@ sal_uInt8 UnitConverter::calcBiffErrorCode( const OUString& rErrorCode ) const
     return (aIt == maOoxErrCodes.end()) ? BIFF_ERR_NA : aIt->second;
 }
 
+const OUString& UnitConverter::calcErrorString( sal_uInt8 nErrorCode ) const
+{
+    OoxErrorCodeMap::const_iterator iFail( maOoxErrCodes.end());
+    for (OoxErrorCodeMap::const_iterator aIt( maOoxErrCodes.begin()); aIt != maOoxErrCodes.end(); ++aIt)
+    {
+        if (aIt->second == nErrorCode)
+            return aIt->first;
+        if (aIt->second == BIFF_ERR_NA)
+            iFail = aIt;
+    }
+    assert(iFail != maOoxErrCodes.end());   // BIFF_ERR_NA really should be in the map..
+    return iFail->first;
+}
+
 void UnitConverter::addErrorCode( sal_uInt8 nErrorCode, const OUString& rErrorCode )
 {
     maOoxErrCodes[ rErrorCode ]  = nErrorCode;