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/* $NetBSD: multibyte.h,v 1.6 2013/08/18 20:03:48 joerg Exp $ */
/*-
* Copyright (c)2002 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _MULTIBYTE_H_
#define _MULTIBYTE_H_
/* mbstate_t private */
#ifdef _BSD_MBSTATE_T_
typedef _BSD_MBSTATE_T_ mbstate_t;
#undef _BSD_MBSTATE_T_
#endif
typedef struct _RuneStatePriv {
_RuneLocale *__runelocale;
char __private __attribute__((__aligned__));
} _RuneStatePriv;
typedef union _RuneState {
mbstate_t __pad;
struct _RuneStatePriv __priv;
#define rs_runelocale __priv.__runelocale
#define rs_private __priv.__private
} _RuneState;
#define _PRIVSIZE (sizeof(mbstate_t)-offsetof(_RuneStatePriv, __private))
#define _RUNE_LOCALE(loc) \
((_RuneLocale *)((loc)->part_impl[(size_t)LC_CTYPE]))
#define _CITRUS_CTYPE(loc) \
(((_RuneLocale *)((loc)->part_impl[(size_t)LC_CTYPE]))->rl_citrus_ctype)
/* */
static __inline _RuneState *
_ps_to_runestate(mbstate_t *ps)
{
return (_RuneState *)(void *)ps;
}
static __inline _RuneState const *
_ps_to_runestate_const(mbstate_t const *ps)
{
return (_RuneState const *)(void const *)ps;
}
static __inline _RuneLocale *
_ps_to_runelocale(mbstate_t const *ps)
{
return _ps_to_runestate_const(ps)->rs_runelocale;
}
static __inline _citrus_ctype_t
_ps_to_ctype(mbstate_t const *ps, locale_t loc)
{
if (!ps)
return _CITRUS_CTYPE(loc);
_DIAGASSERT(_ps_to_runelocale(ps) != NULL);
return _ps_to_runelocale(ps)->rl_citrus_ctype;
}
static __inline void *
_ps_to_private(mbstate_t *ps)
{
if (ps == NULL)
return NULL;
return (void *)&_ps_to_runestate(ps)->rs_private;
}
static __inline void const *
_ps_to_private_const(mbstate_t const *ps)
{
if (ps == NULL)
return NULL;
return (void const *)&_ps_to_runestate_const(ps)->rs_private;
}
static __inline void
_init_ps(_RuneLocale *rl, mbstate_t *ps)
{
size_t dum;
_ps_to_runestate(ps)->rs_runelocale = rl;
_citrus_ctype_mbrtowc(rl->rl_citrus_ctype, NULL, NULL, 0,
_ps_to_private(ps), &dum);
}
static __inline void
_fixup_ps(_RuneLocale *rl, mbstate_t *ps, int forceinit)
{
/* for future multi-locale facility */
_DIAGASSERT(rl != NULL);
if (ps != NULL && (_ps_to_runelocale(ps) == NULL || forceinit)) {
_init_ps(rl, ps);
}
}
#endif /*_MULTIBYTE_H_*/
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