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+/*
+ *          Copyright Andrey Semashev 2007 - 2014.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          http://www.boost.org/LICENSE_1_0.txt)
+ */
+/*!
+ * \file   formatters/csv_decorator.hpp
+ * \author Andrey Semashev
+ * \date   18.11.2012
+ *
+ * The header contains implementation of a CSV-style character decorator.
+ * See: http://en.wikipedia.org/wiki/Comma-separated_values
+ */
+
+#ifndef BOOST_LOG_EXPRESSIONS_FORMATTERS_CSV_DECORATOR_HPP_INCLUDED_
+#define BOOST_LOG_EXPRESSIONS_FORMATTERS_CSV_DECORATOR_HPP_INCLUDED_
+
+#include <boost/range/iterator_range_core.hpp>
+#include <boost/log/detail/config.hpp>
+#include <boost/log/expressions/formatters/char_decorator.hpp>
+#include <boost/log/detail/header.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+
+BOOST_LOG_OPEN_NAMESPACE
+
+namespace expressions {
+
+namespace aux {
+
+template< typename >
+struct csv_decorator_traits;
+
+#ifdef BOOST_LOG_USE_CHAR
+template< >
+struct csv_decorator_traits< char >
+{
+    static boost::iterator_range< const char* const* > get_patterns()
+    {
+        static const char* const patterns[] =
+        {
+            "\""
+        };
+        return boost::make_iterator_range(patterns);
+    }
+    static boost::iterator_range< const char* const* > get_replacements()
+    {
+        static const char* const replacements[] =
+        {
+            "\"\""
+        };
+        return boost::make_iterator_range(replacements);
+    }
+};
+#endif // BOOST_LOG_USE_CHAR
+
+#ifdef BOOST_LOG_USE_WCHAR_T
+template< >
+struct csv_decorator_traits< wchar_t >
+{
+    static boost::iterator_range< const wchar_t* const* > get_patterns()
+    {
+        static const wchar_t* const patterns[] =
+        {
+            L"\""
+        };
+        return boost::make_iterator_range(patterns);
+    }
+    static boost::iterator_range< const wchar_t* const* > get_replacements()
+    {
+        static const wchar_t* const replacements[] =
+        {
+            L"\"\""
+        };
+        return boost::make_iterator_range(replacements);
+    }
+};
+#endif // BOOST_LOG_USE_WCHAR_T
+
+template< typename CharT >
+struct csv_decorator_gen
+{
+    typedef CharT char_type;
+
+    template< typename SubactorT >
+    BOOST_FORCEINLINE char_decorator_actor< SubactorT, pattern_replacer< char_type > > operator[] (SubactorT const& subactor) const
+    {
+        typedef csv_decorator_traits< char_type > traits_type;
+        typedef pattern_replacer< char_type > replacer_type;
+        typedef char_decorator_actor< SubactorT, replacer_type > result_type;
+        typedef typename result_type::terminal_type terminal_type;
+        typename result_type::base_type act = {{ terminal_type(subactor, replacer_type(traits_type::get_patterns(), traits_type::get_replacements())) }};
+        return result_type(act);
+    }
+};
+
+} // namespace aux
+
+/*!
+ * CSV-style decorator generator object. The decorator doubles double quotes that may be found
+ * in the output. See http://en.wikipedia.org/wiki/Comma-separated_values for more information on
+ * the CSV format. The generator provides <tt>operator[]</tt> that can be used to construct
+ * the actual decorator. For example:
+ *
+ * <code>
+ * csv_decor[ attr< std::string >("MyAttr") ]
+ * </code>
+ *
+ * For wide-character formatting there is the similar \c wcsv_decor decorator generator object.
+ */
+#ifdef BOOST_LOG_USE_CHAR
+const aux::csv_decorator_gen< char > csv_decor = {};
+#endif
+#ifdef BOOST_LOG_USE_WCHAR_T
+const aux::csv_decorator_gen< wchar_t > wcsv_decor = {};
+#endif
+
+/*!
+ * The function creates an CSV-style decorator generator for arbitrary character type.
+ */
+template< typename CharT >
+BOOST_FORCEINLINE aux::csv_decorator_gen< CharT > make_csv_decor()
+{
+    return aux::csv_decorator_gen< CharT >();
+}
+
+} // namespace expressions
+
+BOOST_LOG_CLOSE_NAMESPACE // namespace log
+
+} // namespace boost
+
+#include <boost/log/detail/footer.hpp>
+
+#endif // BOOST_LOG_EXPRESSIONS_FORMATTERS_CSV_DECORATOR_HPP_INCLUDED_