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diff --git a/src/main/include/log4cxx/pattern/nameabbreviator.h b/src/main/include/log4cxx/pattern/nameabbreviator.h
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+++ b/src/main/include/log4cxx/pattern/nameabbreviator.h
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+/*
+ * 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
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LOG4CXX_PATTERN_NAME_ABBREVIATOR
+#define _LOG4CXX_PATTERN_NAME_ABBREVIATOR
+
+#include <log4cxx/logstring.h>
+#include <log4cxx/helpers/objectptr.h>
+#include <log4cxx/helpers/objectimpl.h>
+
+namespace log4cxx {
+  namespace pattern {
+
+    class NameAbbreviator;
+    LOG4CXX_PTR_DEF(NameAbbreviator);
+
+/**
+ * NameAbbreviator generates abbreviated logger and class names.
+ *
+ * 
+ * 
+ */
+class LOG4CXX_EXPORT NameAbbreviator : public log4cxx::helpers::ObjectImpl {
+public:
+   DECLARE_ABSTRACT_LOG4CXX_OBJECT(NameAbbreviator)
+   BEGIN_LOG4CXX_CAST_MAP()
+        LOG4CXX_CAST_ENTRY(NameAbbreviator)
+   END_LOG4CXX_CAST_MAP()
+
+protected:
+   NameAbbreviator();
+
+public:
+   virtual ~NameAbbreviator();
+
+  /**
+   * Gets an abbreviator.
+   *
+   * For example, "%logger{2}" will output only 2 elements of the logger name,
+   * "%logger{1.}" will output only the first character of the non-final elements in the name,
+   * "%logger(1~.2~} will output the first character of the first element, two characters of
+   * the second and subsequent elements and will use a tilde to indicate abbreviated characters.
+   *
+   * @param pattern abbreviation pattern.
+   * @return abbreviator, will not be null.
+   */
+  static NameAbbreviatorPtr getAbbreviator(const LogString& pattern);
+
+  /**
+   * Gets default abbreviator.
+   *
+   * @return default abbreviator.
+   */
+  static NameAbbreviatorPtr getDefaultAbbreviator();
+
+  /**
+   * Abbreviates a name in a StringBuffer.
+   *
+   * @param nameStart starting position of name in buf.
+   * @param buf buffer, may not be null.
+   */
+  virtual void abbreviate(LogString::size_type nameStart, LogString& buf) const = 0;
+
+};
+  }
+}
+#endif