common/util.c

   1 /*
   2  * util.c - useful functions
   3  *
   4  * Copyright (C) 2010 Mason Larobina <mason.larobina@gmail.com>
   5  * Copyright (C) 2007-2008 Julien Danjou <julien@danjou.info>
   6  * Copyright (C) 2006 Pierre Habouzit <madcoder@debian.org>
   7  *
   8  * This program is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU 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, see <http://www.gnu.org/licenses/>.
  20  *
  21  */
  22
  23 #include <glib/gprintf.h>
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26
  27 #include "common/util.h"
  28
  29 /* Print error and exit with EXIT_FAILURE code. */
  30 void
  31 _fatal(int line, const char *fct, const char *fmt, ...) {
  32     va_list ap;
  33     va_start(ap, fmt);
  34     g_fprintf(stderr, "E: luakit: %s:%d: ", fct, line);
  35     g_vfprintf(stderr, fmt, ap);
  36     va_end(ap);
  37     g_fprintf(stderr, "\n");
  38     exit(EXIT_FAILURE);
  39 }
  40
  41 /* Print error message on stderr. */
  42 void
  43 _warn(int line, const char *fct, const char *fmt, ...) {
  44     va_list ap;
  45     va_start(ap, fmt);
  46     g_fprintf(stderr, "W: luakit: %s:%d: ", fct, line);
  47     g_vfprintf(stderr, fmt, ap);
  48     va_end(ap);
  49     g_fprintf(stderr, "\n");
  50 }
  51
  52 /* Print debug message on stderr. */
  53 void
  54 _debug(int line, const char *fct, const char *fmt, ...) {
  55     va_list ap;
  56     va_start(ap, fmt);
  57     g_fprintf(stderr, "D: luakit: %s:%d: ", fct, line);
  58     g_vfprintf(stderr, fmt, ap);
  59     va_end(ap);
  60     g_fprintf(stderr, "\n");
  61 }
  62
  63 gboolean
  64 file_exists(const gchar *filename)
  65 {
  66     return (access(filename, F_OK) == 0);
  67 }