src/unlink.c

   1 /* unlink utility for GNU.
   2    Copyright (C) 2001, 2002, 2004 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 /* Written by Michael Stone */
  19
  20 /* Implementation overview:
  21
  22    Simply call the system 'unlink' function */
  23
  24 #include <config.h>
  25 #include <stdio.h>
  26 #include <getopt.h>
  27 #include <sys/types.h>
  28
  29 #include "system.h"
  30 #include "error.h"
  31 #include "long-options.h"
  32 #include "quote.h"
  33
  34 /* The official name of this program (e.g., no `g' prefix).  */
  35 #define PROGRAM_NAME "unlink"
  36
  37 #define AUTHORS "Michael Stone"
  38
  39 /* Name this program was run with.  */
  40 char *program_name;
  41
  42 void
  43 usage (int status)
  44 {
  45   if (status != EXIT_SUCCESS)
  46     fprintf (stderr, _("Try `%s --help' for more information.\n"),
  47              program_name);
  48   else
  49     {
  50       printf (_("\
  51 Usage: %s FILE\n\
  52   or:  %s OPTION\n"), program_name, program_name);
  53       fputs (_("Call the unlink function to remove the specified FILE.\n\n"),
  54              stdout);
  55       fputs (HELP_OPTION_DESCRIPTION, stdout);
  56       fputs (VERSION_OPTION_DESCRIPTION, stdout);
  57       printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
  58     }
  59   exit (status);
  60 }
  61
  62 int
  63 main (int argc, char **argv)
  64 {
  65   initialize_main (&argc, &argv);
  66   program_name = argv[0];
  67   setlocale (LC_ALL, "");
  68   bindtextdomain (PACKAGE, LOCALEDIR);
  69   textdomain (PACKAGE);
  70
  71   atexit (close_stdout);
  72
  73   parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
  74                       usage, AUTHORS, (char const *) NULL);
  75   if (getopt_long (argc, argv, "", NULL, NULL) != -1)
  76     usage (EXIT_FAILURE);
  77
  78   if (argc < optind + 1)
  79     {
  80       error (0, 0, _("missing operand"));
  81       usage (EXIT_FAILURE);
  82     }
  83
  84   if (optind + 1 < argc)
  85     {
  86       error (0, 0, _("extra operand %s"), quote (argv[optind + 1]));
  87       usage (EXIT_FAILURE);
  88     }
  89
  90   if (unlink (argv[optind]) != 0)
  91     error (EXIT_FAILURE, errno, _("cannot unlink %s"), quote (argv[optind]));
  92
  93   exit (EXIT_SUCCESS);
  94 }