add front demo in this project

LFtid1056/cloudfront/code/log4cplus/fstreams.h

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+// -*- C++ -*-
+// Module:  Log4CPLUS
+// File:    fstreams.h
+// Created: 4/2003
+// Author:  Tad E. Smith
+//
+//
+// Copyright 2003-2017 Tad E. Smith
+//
+// Licensed 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.
+
+/** @file */
+
+#ifndef LOG4CPLUS_FSTREAMS_HEADER_
+#define LOG4CPLUS_FSTREAMS_HEADER_
+
+#include <log4cplus/config.hxx>
+
+#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#include <log4cplus/tchar.h>
+#include <iosfwd>
+
+
+namespace log4cplus
+{
+
+
+typedef std::basic_ofstream<tchar> tofstream;
+typedef std::basic_ifstream<tchar> tifstream;
+
+//! \def LOG4CPLUS_FSTREAM_PREFERED_FILE_NAME(X)
+//! \brief Expands into expression that picks the right type for
+//! std::fstream file name parameter.
+#if defined (LOG4CPLUS_FSTREAM_ACCEPTS_WCHAR_T) && defined (UNICODE)
+#  define LOG4CPLUS_FSTREAM_PREFERED_FILE_NAME(X) (X)
+#else
+#  define LOG4CPLUS_FSTREAM_PREFERED_FILE_NAME(X) (LOG4CPLUS_TSTRING_TO_STRING(X))
+#endif
+
+
+}
+
+#endif // LOG4CPLUS_FSTREAMS_HEADER_