add front demo in this project

LFtid1056/cloudfront/code/log4cplus/callbackappender.h

@@ -0,0 +1,73 @@
+// -*- C++ -*-
+//  Copyright (C) 2015-2017, Vaclav Haisman. All rights reserved.
+//
+//  Redistribution and use in source and binary forms, with or without modifica-
+//  tion, are permitted provided that the following conditions are met:
+//
+//  1. Redistributions of  source code must  retain the above copyright  notice,
+//     this list of conditions and the following disclaimer.
+//
+//  2. Redistributions in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//
+//  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+//  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+//  FITNESS  FOR A PARTICULAR  PURPOSE ARE  DISCLAIMED.  IN NO  EVENT SHALL  THE
+//  APACHE SOFTWARE  FOUNDATION  OR ITS CONTRIBUTORS  BE LIABLE FOR  ANY DIRECT,
+//  INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLU-
+//  DING, BUT NOT LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES; LOSS
+//  OF USE, DATA, OR  PROFITS; OR BUSINESS  INTERRUPTION)  HOWEVER CAUSED AND ON
+//  ANY  THEORY OF LIABILITY,  WHETHER  IN CONTRACT,  STRICT LIABILITY,  OR TORT
+//  (INCLUDING  NEGLIGENCE OR  OTHERWISE) ARISING IN  ANY WAY OUT OF THE  USE OF
+//  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+/** @file */
+
+#ifndef LOG4CPLUS_CALLBACK_APPENDER_HEADER_
+#define LOG4CPLUS_CALLBACK_APPENDER_HEADER_
+
+#include <log4cplus/config.hxx>
+
+#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#include <log4cplus/appender.h>
+#include <log4cplus/clogger.h>
+
+
+namespace log4cplus {
+
+/**
+* Send log events to a C function callback.
+*/
+class LOG4CPLUS_EXPORT CallbackAppender
+    : public Appender {
+public:
+    CallbackAppender();
+    CallbackAppender(log4cplus_log_event_callback_t callback, void * cookie);
+    CallbackAppender(const log4cplus::helpers::Properties&);
+
+    virtual ~CallbackAppender();
+    virtual void close();
+
+    void setCookie(void *);
+    void setCallback(log4cplus_log_event_callback_t);
+
+protected:
+    virtual void append(const log4cplus::spi::InternalLoggingEvent& event);
+
+private:
+    log4cplus_log_event_callback_t callback;
+    void * cookie;
+
+    // Disallow copying of instances of this class
+    CallbackAppender(const CallbackAppender&) = delete;
+    CallbackAppender& operator=(const CallbackAppender&) = delete;
+};
+
+} // end namespace log4cplus
+
+#endif // LOG4CPLUS_CALLBACK_APPENDER_HEADER_