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diff --git a/sc/source/filter/inc/xistring.hxx b/sc/source/filter/inc/xistring.hxx
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+++ b/sc/source/filter/inc/xistring.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef SC_XISTRING_HXX
+#define SC_XISTRING_HXX
+
+#include "xlstring.hxx"
+
+// Byte/Unicode strings =======================================================
+
+class XclImpStream;
+
+/** This class represents an unformatted or formatted string and provides importing from stream. */
+class XclImpString
+{
+public:
+    /** Constructs an empty string. */
+    explicit            XclImpString();
+    /** Constructs an unformatted string. */
+    explicit            XclImpString( const String& rString );
+
+                        ~XclImpString();
+
+    /** Reads a complete string from the passed stream. */
+    void                Read( XclImpStream& rStrm, XclStrFlags nFlags = EXC_STR_DEFAULT );
+
+    /** Sets the passed string data. */
+    inline void         SetText( const String& rText ) { maString = rText; }
+    /** Sets the passed formatting buffer. */
+    inline void         SetFormats( const XclFormatRunVec& rFormats ) { maFormats = rFormats; }
+    /** Insert a formatting run to the format buffer. */
+    inline void         AppendFormat( sal_uInt16 nChar, sal_uInt16 nFontIdx ) { AppendFormat( maFormats, nChar, nFontIdx ); }
+    /** Reads and appends the formatting information (run count and runs) from stream. */
+    inline void         ReadFormats( XclImpStream& rStrm ) { ReadFormats( rStrm, maFormats ); }
+    /** Reads and appends nRunCount formatting runs from stream. */
+    inline void         ReadFormats( XclImpStream& rStrm, sal_uInt16 nRunCount ) { ReadFormats( rStrm, maFormats, nRunCount ); }
+    /** Reads and appends formatting runs from an OBJ or TXO record. */
+    inline void         ReadObjFormats( XclImpStream& rStrm, sal_uInt16 nFormatSize ) { ReadObjFormats( rStrm, maFormats, nFormatSize ); }
+
+    /** Returns true, if the string is empty. */
+    inline bool         IsEmpty() const { return maString.Len() == 0; }
+    /** Returns the pure text data of the string. */
+    inline const String& GetText() const { return maString; }
+
+    /** Returns true, if the string contains formatting information. */
+    inline bool         IsRich() const { return !maFormats.empty(); }
+    /** Returns the formatting run vector. */
+    inline const XclFormatRunVec& GetFormats() const { return maFormats; }
+
+    /** Insert a formatting run to the passed format buffer. */
+    static void         AppendFormat( XclFormatRunVec& rFormats, sal_uInt16 nChar, sal_uInt16 nFontIdx );
+    /** Reads and appends the formatting information (run count and runs) from stream. */
+    static void         ReadFormats( XclImpStream& rStrm, XclFormatRunVec& rFormats );
+    /** Reads and appends nRunCount formatting runs from stream. */
+    static void         ReadFormats( XclImpStream& rStrm, XclFormatRunVec& rFormats, sal_uInt16 nRunCount );
+    /** Reads and appends formatting runs from an OBJ or TXO record. */
+    static void         ReadObjFormats( XclImpStream& rStrm, XclFormatRunVec& rFormats, sal_uInt16 nFormatSize );
+
+private:
+    String              maString;       /// The text data of the string.
+    XclFormatRunVec     maFormats;      /// All formatting runs.
+};
+
+// String iterator ============================================================
+
+/** Iterates over formatted string portions. */
+class XclImpStringIterator
+{
+public:
+    explicit            XclImpStringIterator( const XclImpString& rString );
+
+    /** Returns true, if the iterator references a valid text portion. */
+    inline bool         Is() const { return mnTextBeg < mrText.Len(); }
+    /** Returns the index of the current text portion. */
+    inline size_t       GetPortionIndex() const { return mnPortion; }
+    /** Returns the string of the current text portion. */
+    String              GetPortionText() const;
+    /** Returns the font index of the current text portion. */
+    sal_uInt16          GetPortionFont() const;
+
+    /** Moves iterator to next text portion. */
+    XclImpStringIterator& operator++();
+
+private:
+    const String&       mrText;         /// The processed string.
+    const XclFormatRunVec& mrFormats;   /// The vector of formatting runs.
+    size_t              mnPortion;      /// Current text portion.
+    xub_StrLen          mnTextBeg;      /// First character of current portion.
+    xub_StrLen          mnTextEnd;      /// First character of next portion.
+    size_t              mnFormatsBeg;   /// Formatting run index for current portion.
+    size_t              mnFormatsEnd;   /// Formatting run index for next portion.
+};
+
+// ============================================================================
+
+#endif
+