src/true.c

   1 /* Exit with a status code indicating success.
   2    Copyright (C) 1999-2003 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 #include <config.h>
  19 #include <stdio.h>
  20 #include <sys/types.h>
  21 #include "system.h"
  22
  23 #define PROGRAM_NAME "true"
  24 #define AUTHORS "Jim Meyering"
  25
  26 /* The name this program was run with. */
  27 char *program_name;
  28
  29 void
  30 usage (int status)
  31 {
  32   printf (_("\
  33 Usage: %s [ignored command line arguments]\n\
  34   or:  %s OPTION\n\
  35 Exit with a status code indicating success.\n\
  36 \n\
  37 These option names may not be abbreviated.\n\
  38 \n\
  39 "),
  40           program_name, program_name);
  41       fputs (HELP_OPTION_DESCRIPTION, stdout);
  42       fputs (VERSION_OPTION_DESCRIPTION, stdout);
  43   printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
  44   exit (status);
  45 }
  46
  47 int
  48 main (int argc, char **argv)
  49 {
  50   initialize_main (&argc, &argv);
  51   program_name = argv[0];
  52   setlocale (LC_ALL, "");
  53   bindtextdomain (PACKAGE, LOCALEDIR);
  54   textdomain (PACKAGE);
  55
  56   atexit (close_stdout);
  57
  58   /* Recognize --help or --version only if it's the only command-line
  59      argument.  */
  60   if (argc == 2)
  61     {
  62       if (STREQ (argv[1], "--help"))
  63         usage (EXIT_SUCCESS);
  64
  65       if (STREQ (argv[1], "--version"))
  66         version_etc (stdout, PROGRAM_NAME, GNU_PACKAGE, VERSION, AUTHORS,
  67                      (char *) NULL);
  68     }
  69
  70   exit (EXIT_SUCCESS);
  71 }