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diff --git a/include/cosv/str_types.hxx b/include/cosv/str_types.hxx
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+++ b/include/cosv/str_types.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef COSV_STR_TYPES_HXX
+#define COSV_STR_TYPES_HXX
+
+
+namespace csv
+{
+
+/** Provides some generally used constants.
+*/
+struct str
+{
+  public:
+    typedef ::size_t    position;
+    typedef ::size_t    size;
+
+    static const position npos = -1;
+    static const size maxsize = -1;
+
+    enum insert_mode
+    {
+        overwrite = 0,
+        insert = 1
+    };
+};
+
+
+/** Is used for string comparisons.
+
+    @collab String
+    @collab various csv::compare(...) functions
+*/
+class CharOrder_Table
+{
+  public:
+    /** @precond
+        Parameter i_pCharWeightsArray
+        must have size of 256.
+    */
+                        CharOrder_Table(
+                            const int *         i_pCharWeightsArray );
+
+    /** @return the weight of the char i_c.
+        @precond
+        Even with unusual implementations, where char has more than 8 bit,
+        there must be true: 0 <= i_c < 256.
+    */
+    int                 operator()(
+                            char                i_c ) const;
+  private:
+    int                 cWeights[256];
+};
+
+
+// IMPLEMENTATION
+
+inline int
+CharOrder_Table::operator()( char i_c ) const
+    { return cWeights[ UINT8(i_c) ]; }
+
+
+
+}   // namespace csv
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */