127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/* $NetBSD: multibyte.h,v 1.3 2003/04/29 14:53:12 scw Exp $ */
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/*-
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* Copyright (c)2002 Citrus Project,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _MULTIBYTE_H_
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#define _MULTIBYTE_H_
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/* mbstate_t private */
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#ifdef _BSD_MBSTATE_T_
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typedef _BSD_MBSTATE_T_ mbstate_t;
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#undef _BSD_MBSTATE_T_
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#endif
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typedef struct _RuneStatePriv {
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_RuneLocale *__runelocale;
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char __private __attribute__((__aligned__));
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} _RuneStatePriv;
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typedef union _RuneState {
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mbstate_t __pad;
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struct _RuneStatePriv __priv;
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#define rs_runelocale __priv.__runelocale
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#define rs_private __priv.__private
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} _RuneState;
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#define _PRIVSIZE (sizeof(mbstate_t)-offsetof(_RuneStatePriv, __private))
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/* */
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static __inline _citrus_ctype_t
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_to_cur_ctype(void)
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{
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return (_CurrentRuneLocale->rl_citrus_ctype);
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}
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static __inline _RuneState *
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_ps_to_runestate(mbstate_t *ps)
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{
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return (_RuneState *)(void *)ps;
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}
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static __inline _RuneState const *
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_ps_to_runestate_const(mbstate_t const *ps)
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{
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return (_RuneState const *)(void const *)ps;
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}
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static __inline _RuneLocale *
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_ps_to_runelocale(mbstate_t const *ps)
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{
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return _ps_to_runestate_const(ps)->rs_runelocale;
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}
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static __inline _citrus_ctype_t
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_ps_to_ctype(mbstate_t const *ps)
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{
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if (!ps)
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return _to_cur_ctype();
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_DIAGASSERT(_ps_to_runelocale(ps) != NULL);
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return _ps_to_runelocale(ps)->rl_citrus_ctype;
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}
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static __inline void *
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_ps_to_private(mbstate_t *ps)
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{
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if (ps == NULL)
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return NULL;
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return (void *)&_ps_to_runestate(ps)->rs_private;
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}
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static __inline void const *
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_ps_to_private_const(mbstate_t const *ps)
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{
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if (ps == NULL)
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return NULL;
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return (void const *)&_ps_to_runestate_const(ps)->rs_private;
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}
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static __inline void
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_init_ps(_RuneLocale *rl, mbstate_t *ps)
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{
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size_t dum;
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_ps_to_runestate(ps)->rs_runelocale = rl;
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_citrus_ctype_mbrtowc(rl->rl_citrus_ctype, NULL, NULL, 0,
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_ps_to_private(ps), &dum);
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}
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static __inline void
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_fixup_ps(_RuneLocale *rl, mbstate_t *ps, int forceinit)
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{
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/* for future multi-locale facility */
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_DIAGASSERT(rl != NULL);
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if (ps != NULL && (_ps_to_runelocale(ps) == NULL || forceinit)) {
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_init_ps(rl, ps);
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}
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}
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#endif
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