arch/all-pc/boot/grub2-aros/util/grub-mkrelpath.c

   1 /* grub-mkrelpath.c - make a system path relative to its root */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2009,2010 Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <grub/util/misc.h>
  25 #include <grub/emu/misc.h>
  26 #include <grub/i18n.h>
  27
  28 #define _GNU_SOURCE     1
  29 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
  30 #pragma GCC diagnostic ignored "-Wmissing-declarations"
  31 #include <argp.h>
  32 #pragma GCC diagnostic error "-Wmissing-prototypes"
  33 #pragma GCC diagnostic error "-Wmissing-declarations"
  34
  35 #include "progname.h"
  36
  37 struct arguments
  38 {
  39   char *pathname;
  40 };
  41
  42 static struct argp_option options[] = {
  43   { 0, 0, 0, 0, 0, 0 }
  44 };
  45
  46 static error_t
  47 argp_parser (int key, char *arg, struct argp_state *state)
  48 {
  49   /* Get the input argument from argp_parse, which we
  50      know is a pointer to our arguments structure. */
  51   struct arguments *arguments = state->input;
  52
  53   switch (key)
  54     {
  55     case ARGP_KEY_ARG:
  56       if (state->arg_num == 0)
  57         arguments->pathname = xstrdup (arg);
  58       else
  59         {
  60           /* Too many arguments. */
  61           fprintf (stderr, _("Unknown extra argument `%s'."), arg);
  62           fprintf (stderr, "\n");
  63           argp_usage (state);
  64         }
  65       break;
  66     case ARGP_KEY_NO_ARGS:
  67       fprintf (stderr, "%s", _("No path is specified.\n"));
  68       argp_usage (state);
  69       exit (1);
  70       break;
  71     default:
  72       return ARGP_ERR_UNKNOWN;
  73     }
  74   return 0;
  75 }
  76
  77 static struct argp argp = {
  78   options, argp_parser, N_("PATH"),
  79   N_("Transform a system filename into GRUB one."),
  80   NULL, NULL, NULL
  81 };
  82
  83 int
  84 main (int argc, char *argv[])
  85 {
  86   char *relpath;
  87   struct arguments arguments;
  88
  89   grub_util_host_init (&argc, &argv);
  90
  91   memset (&arguments, 0, sizeof (struct arguments));
  92
  93   /* Check for options.  */
  94   if (argp_parse (&argp, argc, argv, 0, 0, &arguments) != 0)
  95     {
  96       fprintf (stderr, "%s", _("Error in parsing command line arguments\n"));
  97       exit(1);
  98     }
  99
 100   relpath = grub_make_system_path_relative_to_its_root (arguments.pathname);
 101   printf ("%s\n", relpath);
 102   free (relpath);
 103
 104   return 0;
 105 }