dyncolcontainer: use std::map in DifAttrCache

Change-Id: Ic3280c5548555ceeb722788dc0a90f8898f46c2e
Reviewed-on: https://gerrit.libreoffice.org/43467Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sc/source/filter/dif/difimp.cxx

@@ -679,18 +679,18 @@ void DifAttrCache::SetNumFormat( const SCCOL nCol, const SCROW nRow, const sal_u
 {
     OSL_ENSURE( ValidCol(nCol), "-DifAttrCache::SetNumFormat(): Col too big!" );
 
-    if( !mvCols[ nCol ] )
-        mvCols[ nCol ].reset( new DifColumn );
+    if( !maColMap.count(nCol) )
+        maColMap[ nCol ].reset( new DifColumn );
 
-    mvCols[ nCol ]->SetNumFormat( nRow, nNumFormat );
+    maColMap[ nCol ]->SetNumFormat( nRow, nNumFormat );
 }
 
 void DifAttrCache::Apply( ScDocument& rDoc, SCTAB nTab )
 {
     for( SCCOL nCol : rDoc.GetColumnsRange(nTab, 0, MAXCOL) )
     {
-        if( mvCols[ nCol ] )
-            mvCols[ nCol ]->Apply( rDoc, nCol, nTab );
+        if( maColMap.count(nCol) )
+            maColMap[ nCol ]->Apply( rDoc, nCol, nTab );
     }
 }
 

sc/source/filter/inc/dif.hxx

@@ -21,6 +21,7 @@
 #define INCLUDED_SC_SOURCE_FILTER_INC_DIF_HXX
 
 #include <array>
+#include <map>
 #include <memory>
 #include <vector>
 
@@ -164,7 +165,7 @@ public:
 
 private:
 
-    std::array<std::unique_ptr<DifColumn>,MAXCOL + 1> mvCols;
+    std::map<SCCOL, std::unique_ptr<DifColumn>> maColMap;
 };
 
 #endif