add front demo in this project

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

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+// -*- C++ -*-
+// Module:  Log4CPLUS
+// File:    appenderattachableimpl.h
+// Created: 6/2001
+// Author:  Tad E. Smith
+//
+//
+// Copyright 2001-2017 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_APPENDER_ATTACHABLE_IMPL_HEADER_
+#define LOG4CPLUS_HELPERS_APPENDER_ATTACHABLE_IMPL_HEADER_
+
+#include <log4cplus/config.hxx>
+
+#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#include <log4cplus/tstring.h>
+#include <log4cplus/helpers/pointer.h>
+#include <log4cplus/spi/appenderattachable.h>
+#include <log4cplus/thread/syncprims.h>
+
+#include <memory>
+#include <vector>
+
+
+namespace log4cplus {
+    namespace helpers {
+ 
+        /**
+         * This Interface is for attaching Appenders to objects.
+         */
+        class LOG4CPLUS_EXPORT AppenderAttachableImpl 
+            : public log4cplus::spi::AppenderAttachable
+        {
+        public:
+          // Data
+            thread::Mutex appender_list_mutex;
+
+          // Ctors
+            AppenderAttachableImpl();
+
+          // Dtor
+            virtual ~AppenderAttachableImpl();
+
+          // Methods
+            /**
+             * Add an appender.  If the appender is already in the list in
+             * won't be added again.
+             */
+            virtual void addAppender(SharedAppenderPtr newAppender);
+
+            /**
+             * Get all previously added appenders as an vectory.
+             */
+            virtual SharedAppenderPtrList getAllAppenders();
+
+            /**
+             * Look for an attached appender named as <code>name</code>.
+             *
+             * Return the appender with that name if in the list. Return null
+             * otherwise.  
+             */
+            virtual SharedAppenderPtr getAppender(const log4cplus::tstring& name);
+
+            /**
+             * Remove all previously added appenders.
+             */
+            virtual void removeAllAppenders();
+
+            /**
+             * Remove the appender passed as parameter from the list of appenders.
+             */
+            virtual void removeAppender(SharedAppenderPtr appender);
+
+            /**
+             * Remove the appender with the name passed as parameter from the
+             * list of appenders.  
+             */
+            virtual void removeAppender(const log4cplus::tstring& name);
+
+            /**
+             * Call the <code>doAppend</code> method on all attached appenders.  
+             */
+            int appendLoopOnAppenders(const spi::InternalLoggingEvent& event) const;
+
+        protected:
+          // Types
+            typedef std::vector<SharedAppenderPtr> ListType;
+
+          // Data
+            /** Array of appenders. */
+            ListType appenderList;
+
+        private:
+            AppenderAttachableImpl(AppenderAttachableImpl const &);
+            AppenderAttachableImpl & operator = (AppenderAttachableImpl const &);
+        };  // end class AppenderAttachableImpl
+
+    } // end namespace helpers
+} // end namespace log4cplus
+
+#endif // LOG4CPLUS_HELPERS_APPENDER_ATTACHABLE_IMPL_HEADER_
+