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/*
* 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/>.
*/
#ifndef GRUB_POSIX_WCHAR_H
#define GRUB_POSIX_WCHAR_H 1
#include <grub/charset.h>
#define wint_t grub_posix_wint_t
#define wchar_t grub_posix_wchar_t
#define mbstate_t grub_posix_mbstate_t
/* UCS-4. */
typedef grub_int32_t wint_t;
enum
{
WEOF = -1
};
/* UCS-4. */
typedef grub_int32_t wchar_t;
typedef struct mbstate {
grub_uint32_t code;
int count;
} mbstate_t;
/* UTF-8. */
#define MB_CUR_MAX 4
#define MB_LEN_MAX 4
static inline size_t
mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
{
const char *ptr;
if (!s)
{
pwc = 0;
s = "";
n = 1;
}
if (pwc)
*pwc = 0;
for (ptr = s; ptr < s + n; ptr++)
{
if (!grub_utf8_process (*ptr, &ps->code, &ps->count))
return -1;
if (ps->count)
continue;
if (pwc)
*pwc = ps->code;
if (ps->code == 0)
return 0;
return ptr - s + 1;
}
return -2;
}
static inline int
mbsinit(const mbstate_t *ps)
{
return ps->count == 0;
}
static inline size_t
wcrtomb (char *s, wchar_t wc, mbstate_t *ps __attribute__ ((unused)))
{
if (s == 0)
return 1;
return grub_encode_utf8_character ((grub_uint8_t *) s,
(grub_uint8_t *) s + MB_LEN_MAX,
wc);
}
static inline wint_t btowc (int c)
{
if (c & ~0x7f)
return WEOF;
return c;
}
static inline int
wcscoll (const wchar_t *s1, const wchar_t *s2)
{
while (*s1 && *s2)
{
if (*s1 != *s2)
break;
s1++;
s2++;
}
if (*s1 < *s2)
return -1;
if (*s1 > *s2)
return +1;
return 0;
}
#endif
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