103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
/* grub-mkrelpath.c - make a system path relative to its root */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009,2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <grub/util/misc.h>
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#include <grub/emu/misc.h>
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#include <grub/i18n.h>
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#define _GNU_SOURCE 1
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#include <argp.h>
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#include "progname.h"
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struct arguments
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{
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char *pathname;
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};
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static struct argp_option options[] = {
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{ 0, 0, 0, 0, 0, 0 }
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};
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static error_t
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argp_parser (int key, char *arg, struct argp_state *state)
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{
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/* Get the input argument from argp_parse, which we
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know is a pointer to our arguments structure. */
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struct arguments *arguments = state->input;
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switch (key)
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{
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case ARGP_KEY_ARG:
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if (state->arg_num == 0)
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arguments->pathname = xstrdup (arg);
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else
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{
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/* Too many arguments. */
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fprintf (stderr, _("Unknown extra argument `%s'."), arg);
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fprintf (stderr, "\n");
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argp_usage (state);
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}
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break;
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case ARGP_KEY_NO_ARGS:
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fprintf (stderr, "%s", _("No path is specified.\n"));
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argp_usage (state);
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exit (1);
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break;
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default:
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return ARGP_ERR_UNKNOWN;
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}
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return 0;
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}
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static struct argp argp = {
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options, argp_parser, N_("PATH"),
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N_("Transform a system filename into GRUB one."),
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NULL, NULL, NULL
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};
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int
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main (int argc, char *argv[])
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{
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char *relpath;
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struct arguments arguments;
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set_program_name (argv[0]);
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grub_util_init_nls ();
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memset (&arguments, 0, sizeof (struct arguments));
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/* Check for options. */
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if (argp_parse (&argp, argc, argv, 0, 0, &arguments) != 0)
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{
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fprintf (stderr, "%s", _("Error in parsing command line arguments\n"));
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exit(1);
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}
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relpath = grub_make_system_path_relative_to_its_root (arguments.pathname);
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printf ("%s\n", relpath);
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free (relpath);
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return 0;
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}
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