oflog/include/dcmtk/oflog/fileap.h

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// Module:  Log4CPLUS
// File:    fileappender.h
// Created: 6/2001
// Author:  Tad E. Smith
//
//
// Copyright 2001-2009 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.

#ifndef _LOG4CPLUS_FILE_APPENDER_HEADER_
#define _LOG4CPLUS_FILE_APPENDER_HEADER_

#include "dcmtk/oflog/config.h"
#include "dcmtk/oflog/appender.h"
#include "dcmtk/oflog/fstreams.h"
#include "dcmtk/oflog/helpers/property.h"
#include "dcmtk/oflog/helpers/timehelp.h"

#if defined(__DECCXX)
#   define LOG4CPLUS_OPEN_MODE_TYPE LOG4CPLUS_FSTREAM_NAMESPACE::ios::open_mode
#else
#   define LOG4CPLUS_OPEN_MODE_TYPE LOG4CPLUS_FSTREAM_NAMESPACE::ios::openmode
#endif

namespace log4cplus {

    class LOG4CPLUS_EXPORT FileAppender : public Appender {
    public:
      // Ctors
        FileAppender(const log4cplus::tstring& filename,
                     LOG4CPLUS_OPEN_MODE_TYPE mode = LOG4CPLUS_FSTREAM_NAMESPACE::ios::trunc,
                     bool immediateFlush = true);
        FileAppender(const log4cplus::helpers::Properties& properties,
                     log4cplus::tstring& error,
                     LOG4CPLUS_OPEN_MODE_TYPE mode = LOG4CPLUS_FSTREAM_NAMESPACE::ios::trunc);

      // Dtor
        virtual ~FileAppender();

      // Methods
        virtual void close();

    protected:
        virtual void append(const spi::InternalLoggingEvent& event);

        void open(LOG4CPLUS_OPEN_MODE_TYPE mode);
        bool reopen();

      // Data
        bool immediateFlush;

        int reopenDelay;

        unsigned long bufferSize;
        log4cplus::tchar * buffer;

        log4cplus::tofstream out;
        log4cplus::tstring filename;

        log4cplus::helpers::Time reopen_time;

    private:
        void init(const log4cplus::tstring& filename,
                  LOG4CPLUS_OPEN_MODE_TYPE mode);

      // Disallow copying of instances of this class
        FileAppender(const FileAppender&);
        FileAppender& operator=(const FileAppender&);
    };



    class LOG4CPLUS_EXPORT RollingFileAppender : public FileAppender {
    public:
      // Ctors
        RollingFileAppender(const log4cplus::tstring& filename,
                            long maxFileSize = 10*1024*1024, // 10 MB
                            int maxBackupIndex = 1,
                            bool immediateFlush = true);
        RollingFileAppender(const log4cplus::helpers::Properties& properties, log4cplus::tstring& error);

      // Dtor
        virtual ~RollingFileAppender();

    protected:
        virtual void append(const spi::InternalLoggingEvent& event);
        void rollover();

      // Data
        long maxFileSize;
        int maxBackupIndex;

    private:
        void init(long maxFileSize, int maxBackupIndex);
    };



    enum DailyRollingFileSchedule { MONTHLY, WEEKLY, DAILY,
                                    TWICE_DAILY, HOURLY, MINUTELY};

    class LOG4CPLUS_EXPORT DailyRollingFileAppender : public FileAppender {
    public:
      // Ctors
        DailyRollingFileAppender(const log4cplus::tstring& filename,
                                 DailyRollingFileSchedule schedule = DAILY,
                                 bool immediateFlush = true,
                                 int maxBackupIndex = 10);
        DailyRollingFileAppender(const log4cplus::helpers::Properties& properties, log4cplus::tstring& error);

      // Dtor
        virtual ~DailyRollingFileAppender();

      // Methods
        virtual void close();

    protected:
        virtual void append(const spi::InternalLoggingEvent& event);
        void rollover();
        log4cplus::helpers::Time calculateNextRolloverTime(const log4cplus::helpers::Time& t) const;
        log4cplus::tstring getFilename(const log4cplus::helpers::Time& t) const;

      // Data
        DailyRollingFileSchedule schedule;
        log4cplus::tstring scheduledFilename;
        log4cplus::helpers::Time nextRolloverTime;
        int maxBackupIndex;

    private:
        void init(DailyRollingFileSchedule schedule);
    };

} // end namespace log4cplus

#endif // _LOG4CPLUS_FILE_APPENDER_HEADER_

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