resolved fdo#57841 ignore embedded NULL characters in CSV import

Change-Id: Ib0eb044f009227c0aa6e1bc520905d605323c3db

sc/source/ui/dbgui/scuiasciiopt.cxx

@@ -540,6 +540,8 @@ bool ScImportAsciiDlg::GetLine( sal_uLong nLine, rtl::OUString &rText )
     if ( mpDatStream->GetError() == ERRCODE_IO_CANTSEEK )
         mpDatStream->ResetError();
 
+    ScImportExport::EmbeddedNullTreatment( rText);
+
     return bRet;
 }
 

sc/source/ui/docshell/impex.cxx

@@ -1335,6 +1335,8 @@ bool ScImportExport::ExtText2Doc( SvStream& rStrm )
             if ( rStrm.IsEof() && aLine.isEmpty() )
                 break;
 
+            EmbeddedNullTreatment( aLine);
+
             sal_Int32 nLineLen = aLine.getLength();
             SCCOL nCol = nStartCol;
             bool bMultiLine = false;
@@ -1473,6 +1475,23 @@ bool ScImportExport::ExtText2Doc( SvStream& rStrm )
 }
 
 
+void ScImportExport::EmbeddedNullTreatment( OUString & rStr )
+{
+    // A nasty workaround for data with embedded NULL characters. As long as we
+    // can't handle them properly as cell content (things assume 0-terminated
+    // strings at too many places) simply strip all NULL characters from raw
+    // data. Excel does the same. See fdo#57841 for sample data.
+
+    // The normal case is no embedded NULL, check first before de-/allocating
+    // ustring stuff.
+    sal_Unicode cNull = 0;
+    if (rStr.indexOf( cNull) >= 0)
+    {
+        rStr = rStr.replaceAll( OUString( &cNull, 1), OUString());
+    }
+}
+
+
 const sal_Unicode* ScImportExport::ScanNextFieldFromString( const sal_Unicode* p,
         String& rField, sal_Unicode cStr, const sal_Unicode* pSeps, bool bMergeSeps, bool& rbIsQuoted,
         bool& rbOverflowCell )

sc/source/ui/inc/impex.hxx

@@ -102,6 +102,8 @@ public:
     bool IsUndo() const      { return bUndo; }
     void SetUndo( bool b )   { bUndo = b;    }
 
+    SC_DLLPUBLIC static void EmbeddedNullTreatment( OUString & rStr );
+
     static bool  IsFormatSupported( sal_uLong nFormat );
     static const sal_Unicode* ScanNextFieldFromString( const sal_Unicode* p,
             String& rField, sal_Unicode cStr, const sal_Unicode* pSeps,