src/logging.c

   1 /*
   2    Provides a log file to ease tracing the program.
   3
   4    Copyright (C) 2006 Roland Illig <roland.illig@gmx.de>.
   5
   6    This file is part of the Midnight Commander.
   7
   8    The Midnight Commander is free software; you can redistribute it
   9    and/or modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2 of the
  11    License, or (at your option) any later version.
  12
  13    The Midnight Commander is distributed in the hope that it will be
  14    useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  21    MA 02110-1301, USA.
  22  */
  23
  24 #include <config.h>
  25
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28
  29 #include <mhl/memory.h>
  30 #include <mhl/types.h>
  31
  32 #include "global.h"
  33 #include "logging.h"
  34 #include "setup.h"
  35
  36 /*** file scope functions **********************************************/
  37
  38 static bool
  39 is_logging_enabled(void)
  40 {
  41         static bool logging_initialized = FALSE;
  42         static bool logging_enabled = FALSE;
  43         char *mc_ini;
  44
  45         if (!logging_initialized) {
  46                 mc_ini = g_strdup_printf("%s/%s", home_dir, PROFILE_NAME);
  47                 logging_enabled =
  48                     get_int(mc_ini, "development.enable_logging", FALSE);
  49                 g_free(mc_ini);
  50                 logging_initialized = TRUE;
  51         }
  52         return logging_enabled;
  53 }
  54
  55 /*** public functions **************************************************/
  56
  57 void
  58 mc_log(const char *fmt, ...)
  59 {
  60         va_list args;
  61         FILE *f;
  62         char *logfilename;
  63
  64         if (is_logging_enabled()) {
  65                 va_start(args, fmt);
  66                 logfilename = g_strdup_printf("%s/.mc/log", home_dir);
  67                 if ((f = fopen(logfilename, "a")) != NULL) {
  68                         (void)vfprintf(f, fmt, args);
  69                         (void)fclose(f);
  70                 }
  71                 g_free(logfilename);
  72         }
  73 }