logger.h

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/*
  Copyright 2012-2016 David Robillard <http://drobilla.net>
 
  Permission to use, copy, modify, and/or distribute this software for any
  purpose with or without fee is hereby granted, provided that the above
  copyright notice and this permission notice appear in all copies.
 
  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

 
#ifndef LV2_ATOM_LOGGER_H
#define LV2_ATOM_LOGGER_H
 
#include <stdio.h>
#include <string.h>
 
#include "log.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
        LV2_Log_Log* log;
 
        LV2_URID Error;
        LV2_URID Note;
        LV2_URID Trace;
        LV2_URID Warning;
} LV2_Log_Logger;

static inline void
lv2_log_logger_set_map(LV2_Log_Logger* logger, LV2_URID_Map* map)
{
        if (map) {
                logger->Error   = map->map(map->handle, LV2_LOG__Error);
                logger->Note    = map->map(map->handle, LV2_LOG__Note);
                logger->Trace   = map->map(map->handle, LV2_LOG__Trace);
                logger->Warning = map->map(map->handle, LV2_LOG__Warning);
        } else {
                logger->Error = logger->Note = logger->Trace = logger->Warning = 0;
        }
}

static inline void
lv2_log_logger_init(LV2_Log_Logger* logger,
                    LV2_URID_Map*   map,
                    LV2_Log_Log*    log)
{
        logger->log = log;
        lv2_log_logger_set_map(logger, map);
}

LV2_LOG_FUNC(3, 0)
static inline int
lv2_log_vprintf(LV2_Log_Logger* logger,
                LV2_URID        type,
                const char*     fmt,
                va_list         args)
{
        if (logger && logger->log) {
                return logger->log->vprintf(logger->log->handle, type, fmt, args);
        } else {
                return vfprintf(stderr, fmt, args);
        }
}

LV2_LOG_FUNC(2, 3)
static inline int
lv2_log_error(LV2_Log_Logger* logger, const char* fmt, ...)
{
        va_list args;
        va_start(args, fmt);
        const int ret = lv2_log_vprintf(logger, logger->Error, fmt, args);
        va_end(args);
        return ret;
}

LV2_LOG_FUNC(2, 3)
static inline int
lv2_log_note(LV2_Log_Logger* logger, const char* fmt, ...)
{
        va_list args;
        va_start(args, fmt);
        const int ret = lv2_log_vprintf(logger, logger->Note, fmt, args);
        va_end(args);
        return ret;
}

LV2_LOG_FUNC(2, 3)
static inline int
lv2_log_trace(LV2_Log_Logger* logger, const char* fmt, ...)
{
        va_list args;
        va_start(args, fmt);
        const int ret = lv2_log_vprintf(logger, logger->Trace, fmt, args);
        va_end(args);
        return ret;
}

LV2_LOG_FUNC(2, 3)
static inline int
lv2_log_warning(LV2_Log_Logger* logger, const char* fmt, ...)
{
        va_list args;
        va_start(args, fmt);
        const int ret = lv2_log_vprintf(logger, logger->Warning, fmt, args);
        va_end(args);
        return ret;
}
 
#ifdef __cplusplus
}  /* extern "C" */
#endif
 
#endif  /* LV2_LOG_LOGGER_H */