MCLogFile.h

#if !defined(__MCLOGFILE_H_)
#define __MCLOGFILE_H_

#ident "@(#)$Id: MCLogFile.h,v 1.5 2004/12/02 07:05:20 mike Exp $"

/*
 * Copyright Miba Consulting Ltd. (c) 2000-2003
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include "mcllib/MCMsg.h"
#include "mcllib/MCInMutex.h"
#include "mcllib/MCLock.h"
#include "mcllib/MCRefCount.h"
#include "mcllib/MCFile.h"
#include <stdarg.h>

namespace mcllib
{
    class MCLogFile : public MCRefCount {
    public:
        static const int MAX_ROLL;
        MCLogFile(const MCString& fileName = MCString(0),
            MCMsg::msglevel_t lvl = MCMsg::MSGLVL_WARN,
            int maxSize = 0,
            int maxRoll = MAX_ROLL,
            bool keepOpen = false);
        ~MCLogFile();
        void operator()(const char* fmt, ...);
        void operator()(MCMsg::msglevel_t lvl, const char* fmt, ...);
        void operator()(const MCMsg& msg);
        bool isOutput(MCMsg::msglevel_t lvl) const;
        void setDefaultLevel(MCMsg::msglevel_t lvl);
        void setOutputLevel(MCMsg::msglevel_t lvl);
        void setOutputFile(const MCString& fileName);
        void setOutputFile(MCFile::EStdHandle hdl);

    protected:
        void operator()(const char* fmt, va_list ap);
        void operator()(MCMsg::msglevel_t lvl, const char* fmt, va_list ap);
        void init(const MCString& fileName = MCString(0),
            MCMsg::msglevel_t lvl = MCMsg::MSGLVL_WARN,
            int maxSize = 0,
            int maxRoll = MAX_ROLL,
            bool keepOpen = false);

    private:
        MCFile m_file;
        MCInMutex m_mtx;
        MCString m_fileName;
        MCMsg::msglevel_t m_outLvl;
        MCMsg::msglevel_t m_defLvl;
        mcint64 m_maxSize;
        mcint64 m_curSize;
        int m_maxRoll;
        bool m_keepOpen;

        bool rollFile();
        void openFile(bool fresh);
        void closeFile();
    };
};

#endif

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