MsgLogger.h

// -*- c++ -*-
#ifndef __MSG_LOGGER_H__
#define __MSG_LOGGER_H__

// system
#include <stdio.h>
#include <stdlib.h>

// tools
#include "tools/GenericException.h"
#include "tools/AutoFilePtr.h"
#include "tools/NoCopy.h"

class MsgLogger
{
public:
    MsgLogger(const char *filename = 0);

    virtual ~MsgLogger();

    void log(const char *format, va_list ap)
         __attribute__ ((format (printf, 2, 0)));

protected:

    static MsgLogger *TheMsgLogger;

    static void createDefaultLogger();

    static void deleteDefaultLogger();

    MsgLogger *prev_logger;

    friend void LOG_MSG(const char *format, va_list ap);

    AutoFilePtr f;

    virtual void print(const char *s);
private:
    PROHIBIT_DEFAULT_COPY(MsgLogger);
};

void LOG_MSG(const char *format, va_list ap);

void LOG_MSG(const char *format, ...)
    __attribute__ ((format (printf, 1, 2)));

#define LOG_ASSERT(e)                                                \
    if (! (e))                                                       \
    {                                                                \
        LOG_MSG("\nASSERT '%s' FAILED:\n%s (%d)\n\n",                \
                #e, __FILE__, __LINE__);                             \
        if (getenv("ABORT_ON_ERRORS"))                               \
            abort();                                                 \
        throw GenericException(__FILE__, __LINE__,                   \
                               "ASSERT '%s' FAILED", #e);            \
    }

#endif