add front demo in this project

LFtid1056/cloudfront/code/log4cplus/helpers/socketbuffer.h

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+// -*- C++ -*-
+// Module:  Log4CPLUS
+// File:    socketbuffer.h
+// Created: 5/2003
+// 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_HELPERS_SOCKET_BUFFER_HEADER_
+#define LOG4CPLUS_HELPERS_SOCKET_BUFFER_HEADER_
+
+#include <log4cplus/config.hxx>
+
+#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#include <log4cplus/tstring.h>
+
+
+namespace log4cplus {
+namespace helpers {
+
+/**
+ *
+ */
+class LOG4CPLUS_EXPORT SocketBuffer
+{
+public:
+    explicit SocketBuffer(std::size_t max);
+    virtual ~SocketBuffer();
+
+    char *getBuffer() const { return buffer; }
+    std::size_t getMaxSize() const { return maxsize; }
+    std::size_t getSize() const { return size; }
+    void setSize(std::size_t s) { size = s; }
+    std::size_t getPos() const { return pos; }
+
+    unsigned char readByte();
+    unsigned short readShort();
+    unsigned int readInt();
+    tstring readString(unsigned char sizeOfChar);
+
+    void appendByte(unsigned char val);
+    void appendShort(unsigned short val);
+    void appendInt(unsigned int val);
+    void appendString(const tstring& str);
+    void appendBuffer(const SocketBuffer& buffer);
+
+private:
+    // Data
+    std::size_t maxsize;
+    std::size_t size;
+    std::size_t pos;
+    char *buffer;
+
+    SocketBuffer(SocketBuffer const & rhs);
+    SocketBuffer& operator= (SocketBuffer const& rhs);
+};
+
+} // end namespace helpers
+} // end namespace log4cplus
+
+#endif // LOG4CPLUS_HELPERS_SOCKET_HEADER_