log.h

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2008, 2009 Nedko Arnaudov <nedko@arnaudov.name>
   6  * Copyright (C) 2008 Juuso Alasuutari <juuso.alasuutari@gmail.com>
   7  * Copyright (C) 2002 Robert Ham <rah@bash.sh>
   8  *
   9  **************************************************************************
  10  * This file contains log macros
  11  **************************************************************************
  12  *
  13  * LADI Session Handler is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * LADI Session Handler is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  25  * or write to the Free Software Foundation, Inc.,
  26  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  27  */
  28
  29 #ifndef __LADISH_LOG_H__
  30 #define __LADISH_LOG_H__
  31
  32 #define ANSI_BOLD_ON    "\033[1m"
  33 #define ANSI_BOLD_OFF   "\033[22m"
  34 #define ANSI_COLOR_RED  "\033[31m"
  35 #define ANSI_COLOR_YELLOW "\033[33m"
  36 #define ANSI_RESET      "\033[0m"
  37
  38 #include <stdio.h>
  39
  40 #include "config.h"
  41
  42 /* fallback for old gcc versions,
  43    http://gcc.gnu.org/onlinedocs/gcc/Function-Names.html */
  44 #if __STDC_VERSION__ < 199901L
  45 # if __GNUC__ >= 2
  46 #  define __func__ __FUNCTION__
  47 # else
  48 #  define __func__ "<unknown>"
  49 # endif
  50 #endif
  51
  52 #ifndef LOG_OUTPUT_STDOUT
  53
  54 # define LADISH_LOG_LEVEL_DEBUG        0
  55 # define LADISH_LOG_LEVEL_INFO         1
  56 # define LADISH_LOG_LEVEL_WARN         2
  57 # define LADISH_LOG_LEVEL_ERROR        3
  58 # define LADISH_LOG_LEVEL_ERROR_PLAIN  4
  59
  60 void
  61 ladish_log(unsigned int  level,
  62          const char   *format,
  63                        ...);
  64
  65 # ifdef LADISH_DEBUG
  66 #   define log_debug(fmt, args...) \
  67       ladish_log(LADISH_LOG_LEVEL_DEBUG, "%s:%d:%s: " fmt "\n", __FILE__, __LINE__, __func__, ## args)
  68 # else
  69 #   define log_debug(fmt, args...)
  70 # endif /* LADISH_DEBUG */
  71
  72 # define log_info(fmt, args...) ladish_log(LADISH_LOG_LEVEL_INFO, fmt "\n", ## args)
  73 # define log_warn(fmt, args...) ladish_log(LADISH_LOG_LEVEL_WARN, ANSI_COLOR_YELLOW "WARNING: " ANSI_RESET "%s: " fmt "\n", __func__, ## args)
  74 # define log_error(fmt, args...) ladish_log(LADISH_LOG_LEVEL_ERROR, ANSI_COLOR_RED "ERROR: " ANSI_RESET "%s: " fmt "\n", __func__, ## args)
  75 # define log_error_plain(fmt, args...) ladish_log(LADISH_LOG_LEVEL_ERROR_PLAIN, ANSI_COLOR_RED "ERROR: " ANSI_RESET fmt "\n", ## args)
  76
  77 #else /* LOG_OUTPUT_STDOUT */
  78
  79 # ifdef LADISH_DEBUG
  80 #   define log_debug(fmt, args...) \
  81       printf("%s:%d:%s: " fmt "\n", __FILE__, __LINE__, __func__, ## args)
  82 # else
  83 #   define log_debug(fmt, args...)
  84 # endif /* LADISH_DEBUG */
  85
  86 # define log_info(fmt, args...) printf(fmt "\n", ## args)
  87 # define log_warn(fmt, args...) printf(fmt "\n", ## args)
  88 # define log_error(fmt, args...) fprintf(stderr, "%s: " fmt "\n", __func__, ## args)
  89 # define log_error_plain(fmt, args...) fprintf(stderr, fmt "\n", ## args)
  90
  91 #endif /* LOG_OUTPUT_STDOUT */
  92
  93 #endif /* __LADISH_LOG__ */