loplugin:stringadd use more O[U]StringChar

Change-Id: I196e4539ad430a39415eff9d7170b33df7228230
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/149062
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

5 files changed, 7 insertions, 7 deletions

diff --git a/oox/source/drawingml/lineproperties.cxx b/oox/source/drawingml/lineproperties.cxx
index 8e9d676de800..898b5b702161 100644
--- a/oox/source/drawingml/lineproperties.cxx
+++ b/oox/source/drawingml/lineproperties.cxx
@@ -277,11 +277,11 @@ void lclPushMarkerProperties( ShapePropertyMap& rPropMap,
         sal_Int32 nWidth  = lclGetArrowSize( rArrowProps.moArrowWidth.value_or( XML_med ) );
 
         sal_Int32 nNameIndex = nWidth * 3 + nLength + 1;
-        aBuffer.append( ' ' ).append( nNameIndex );
+        aBuffer.append( " " + OUString::number( nNameIndex ));
         if (bIsArrow)
         {
             // Arrow marker form depends also on line width
-            aBuffer.append(' ').append(nLineWidth);
+            aBuffer.append(" " + OUString::number(nLineWidth));
         }
         OUString aMarkerName = aBuffer.makeStringAndClear();
 
diff --git a/oox/source/dump/dumperbase.cxx b/oox/source/dump/dumperbase.cxx
index 497795050f38..0263396928c1 100644
--- a/oox/source/dump/dumperbase.cxx
+++ b/oox/source/dump/dumperbase.cxx
@@ -267,7 +267,7 @@ void StringHelper::appendHex( OUStringBuffer& rStr, sal_uInt8 nData, bool bPrefi
     static const sal_Unicode spcHexDigits[] = { '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F' };
     if( bPrefix )
         rStr.append( "0x" );
-    rStr.append( spcHexDigits[ (nData >> 4) & 0x0F ] ).append( spcHexDigits[ nData & 0x0F ] );
+    rStr.append( OUStringChar(spcHexDigits[ (nData >> 4) & 0x0F ] ) + OUStringChar( spcHexDigits[ nData & 0x0F ] ) );
 }
 
 void StringHelper::appendHex( OUStringBuffer& rStr, sal_Int8 nData, bool bPrefix )
@@ -524,7 +524,7 @@ void StringHelper::appendIndex( OUStringBuffer& rStr, sal_Int64 nIdx )
 {
     OUStringBuffer aToken;
     appendDec( aToken, nIdx );
-    rStr.append( '[' ).append( aToken ).append( ']' );
+    rStr.append( "[" +  aToken + "]" );
 }
 
 std::u16string_view StringHelper::getToken( std::u16string_view rData, sal_Int32& rnPos, sal_Unicode cSep )
diff --git a/oox/source/export/vmlexport.cxx b/oox/source/export/vmlexport.cxx
index 3a7fb417f2fc..2844be0bc8da 100644
--- a/oox/source/export/vmlexport.cxx
+++ b/oox/source/export/vmlexport.cxx
@@ -1084,7 +1084,7 @@ void VMLExport::Commit( EscherPropertyContainer& rProps, const tools::Rectangle&
                     buf.append( "    ( " );
                     for ( int nCount = opt.nProp.size(); nCount; --nCount )
                     {
-                        buf.append( static_cast<sal_Int32>(*pIt), 16 ).append(' ');
+                        buf.append( OString::number(static_cast<sal_Int32>(*pIt), 16) + " ");
                         ++pIt;
                     }
                     buf.append( ")" );
diff --git a/oox/source/ole/vbamodule.cxx b/oox/source/ole/vbamodule.cxx
index 6f1682df070b..4bd93cec132c 100644
--- a/oox/source/ole/vbamodule.cxx
+++ b/oox/source/ole/vbamodule.cxx
@@ -255,7 +255,7 @@ OUString VbaModule::readSourceCode( StorageBase& rVbaStrg )
                     // normal source code line
                     if( !mbExecutable )
                         aSourceCode.append( "Rem " );
-                    aSourceCode.append( aCodeLine ).append( '\n' );
+                    aSourceCode.append( aCodeLine + "\n" );
                 }
             }
         }
diff --git a/oox/source/vml/vmlinputstream.cxx b/oox/source/vml/vmlinputstream.cxx
index 4f94207619f2..53cc6b455a14 100644
--- a/oox/source/vml/vmlinputstream.cxx
+++ b/oox/source/vml/vmlinputstream.cxx
@@ -138,7 +138,7 @@ void lclProcessAttribs( OStringBuffer& rBuffer, const char* pcBeg, const char* p
     // if no error has occurred, build the resulting attribute list
     if( bOk )
         for (auto const& attrib : aAttributes)
-            rBuffer.append( ' ' ).append( attrib.second );
+            rBuffer.append( " " + attrib.second );
     // on error, just append the complete passed string
     else
         lclAppendToBuffer( rBuffer, pcBeg, pcEnd );