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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 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-util.h>
#include <config.h>
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/charset.h>
#include <grub/util/windows.h>
#include <windows.h>
#include <winioctl.h>
static size_t
tclen (const TCHAR *s)
{
const TCHAR *s0 = s;
while (*s)
s++;
return s - s0;
}
char *
grub_make_system_path_relative_to_its_root (const char *path)
{
TCHAR *dirwindows, *mntpointwindows;
TCHAR *ptr;
size_t offset, flen;
TCHAR *ret;
char *cret;
dirwindows = grub_util_get_windows_path (path);
if (!dirwindows)
return xstrdup (path);
mntpointwindows = grub_get_mount_point (dirwindows);
if (!mntpointwindows)
{
offset = 0;
if (dirwindows[0] && dirwindows[1] == ':')
offset = 2;
}
offset = tclen (mntpointwindows);
free (mntpointwindows);
flen = tclen (dirwindows);
if (offset > flen)
{
offset = 0;
if (dirwindows[0] && dirwindows[1] == ':')
offset = 2;
}
ret = xcalloc (flen - offset + 2, sizeof (ret[0]));
if (dirwindows[offset] != '\\'
&& dirwindows[offset] != '/'
&& dirwindows[offset])
{
ret[0] = '\\';
memcpy (ret + 1, dirwindows + offset, (flen - offset + 1) * sizeof (ret[0]));
}
else
memcpy (ret, dirwindows + offset, (flen - offset + 1) * sizeof (ret[0]));
free (dirwindows);
for (ptr = ret; *ptr; ptr++)
if (*ptr == '\\')
*ptr = '/';
cret = grub_util_tchar_to_utf8 (ret);
free (ret);
return cret;
}
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