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/* grub-mkrelpath.c - make a system path relative to its root */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdio.h>
#include <grub/util/misc.h>
#include <grub/emu/misc.h>
#include <grub/i18n.h>
#include <getopt.h>
#include "progname.h"
static struct option options[] =
{
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{0, 0, 0, 0},
};
static void
usage (int status)
{
if (status)
fprintf (stderr, "Try `%s --help' for more information.\n", program_name);
else
printf ("\
Usage: %s [OPTIONS] PATH\n\
\n\
Make a system path relative to its root.\n\
\n\
Options:\n\
-h, --help display this message and exit\n\
-V, --version print version information and exit\n\
\n\
Report bugs to <%s>.\n", program_name, PACKAGE_BUGREPORT);
exit (status);
}
int
main (int argc, char *argv[])
{
char *argument, *relpath;
set_program_name (argv[0]);
grub_util_init_nls ();
/* Check for options. */
while (1)
{
int c = getopt_long (argc, argv, "hV", options, 0);
if (c == -1)
break;
else
switch (c)
{
case 'h':
usage (0);
break;
case 'V':
printf ("%s (%s) %s\n", program_name, PACKAGE_NAME, PACKAGE_VERSION);
return 0;
default:
usage (1);
break;
}
}
if (optind >= argc)
{
fprintf (stderr, "No path is specified.\n");
usage (1);
}
if (optind + 1 != argc)
{
fprintf (stderr, "Unknown extra argument `%s'.\n", argv[optind + 1]);
usage (1);
}
argument = argv[optind];
relpath = grub_make_system_path_relative_to_its_root (argument);
printf ("%s\n", relpath);
free (relpath);
return 0;
}
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