commoncpp/slog.h

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// Copyright (C) 1999-2005 Open Source Telecom Corporation.
// Copyright (C) 2006-2014 David Sugar, Tycho Softworks.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// This exception applies only to the code released under the name GNU
// Common C++.  If you copy code from other releases into a copy of GNU
// Common C++, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
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#ifndef COMMONCPP_SLOG_H_
#define COMMONCPP_SLOG_H_

#include <cstdio>

#ifndef COMMONCPP_CONFIG_H_
#include <commoncpp/config.h>
#endif

#ifndef COMMONCPP_STRING_H_
#include <commoncpp/string.h>
#endif

#ifndef COMMONCPP_THREAD_H_
#include <commoncpp/thread.h>
#endif

NAMESPACE_COMMONCPP

class __EXPORT Slog : protected std::streambuf, public std::ostream
{
public:
    typedef enum Class {
        classSecurity,
        classAudit,
        classDaemon,
        classUser,
        classDefault,
        classLocal0,
        classLocal1,
        classLocal2,
        classLocal3,
        classLocal4,
        classLocal5,
        classLocal6,
        classLocal7
    } Class;

    typedef enum Level {
        levelEmergency = 1,
        levelAlert,
        levelCritical,
        levelError,
        levelWarning,
        levelNotice,
        levelInfo,
        levelDebug
    } Level;

private:
    pthread_mutex_t lock;
    FILE *syslog;
    int priority;
    Level  _level;
    bool _enable;
    bool _clogEnable;

protected:
    int overflow(int c);

public:
    Slog(void);

    virtual ~Slog(void);

    void close(void);

    void open(const char *ident, Class grp = classUser);

    Slog &operator()(const char *ident, Class grp = classUser,
             Level level = levelError);

    Slog &operator()(Level level, Class grp = classDefault);

    Slog &operator()(void);

    void error(const char *format, ...);

    void warn(const char *format, ...);

    void debug(const char *format, ...);

    void emerg(const char *format, ...);

    void alert(const char *format, ...);

    void critical(const char *format, ...);

    void notice(const char *format, ...);

    void info(const char *format, ...);

    inline void level(Level enable)
        {_level = enable;};

    inline void clogEnable(bool f=true)
        {_clogEnable = f;};

    inline Slog &warn(void)
        {return operator()(Slog::levelWarning);};

    inline Slog &error(void)
        {return operator()(Slog::levelError);};

    inline Slog &debug(void)
        {return operator()(Slog::levelDebug);};

    inline Slog &emerg(void)
        {return operator()(Slog::levelEmergency);};

    inline Slog &alert(void)
        {return operator()(Slog::levelAlert);};

    inline Slog &critical(void)
        {return operator()(Slog::levelCritical);};

    inline Slog &notice(void)
        {return operator()(Slog::levelNotice);};

    inline Slog &info(void)
        {return operator()(Slog::levelInfo);};

};

extern __EXPORT Slog    slog;

END_NAMESPACE

#endif

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