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multibyte.h revision 1.1 
      1 /*	$NetBSD: multibyte.h,v 1.1 2002/03/17 22:14:29 tshiozak Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2002 Citrus Project,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _MULTIBYTE_H_
     30 #define _MULTIBYTE_H_
     31 
     32 static __inline _citrus_ctype_t
     33 _to_cur_ctype(void)
     34 {
     35 	return (_CurrentRuneLocale->rl_citrus_ctype);
     36 }
     37 
     38 static __inline _RuneState *
     39 _ps_to_runestate(mbstate_t *ps)
     40 {
     41 	return (_RuneState *)(void *)ps;
     42 }
     43 
     44 static __inline _RuneState const *
     45 _ps_to_runestate_const(mbstate_t const *ps)
     46 {
     47 	return (_RuneState const *)(void const *)ps;
     48 }
     49 
     50 static __inline _RuneLocale *
     51 _ps_to_runelocale(mbstate_t const *ps)
     52 {
     53 	return _ps_to_runestate_const(ps)->rs_runelocale;
     54 }
     55 
     56 static __inline _citrus_ctype_t
     57 _ps_to_ctype(mbstate_t const *ps)
     58 {
     59 	if (!ps)
     60 		return _to_cur_ctype();
     61 
     62 	_DIAGASSERT(_ps_to_runelocale(ps) != NULL);
     63 
     64 	return _ps_to_runelocale(ps)->rl_citrus_ctype;
     65 }
     66 
     67 static __inline void *
     68 _ps_to_private(mbstate_t *ps)
     69 {
     70 	if (ps == NULL)
     71 		return NULL;
     72 	return (void *)&_ps_to_runestate(ps)->rs_private;
     73 }
     74 
     75 static __inline void const *
     76 _ps_to_private_const(mbstate_t const *ps)
     77 {
     78 	if (ps == NULL)
     79 		return NULL;
     80 	return (void const *)&_ps_to_runestate_const(ps)->rs_private;
     81 }
     82 
     83 static __inline void
     84 _init_ps(_RuneLocale *rl, mbstate_t *ps)
     85 {
     86 	size_t dum;
     87 	_ps_to_runestate(ps)->rs_runelocale = rl;
     88 	_citrus_ctype_mbrtowc(rl->rl_citrus_ctype, NULL, NULL, NULL,
     89 			      _ps_to_private(ps), &dum);
     90 }
     91 
     92 static __inline void
     93 _fixup_ps(_RuneLocale *rl, mbstate_t *ps, int forceinit)
     94 {
     95 	/* for future multi-locale facility */
     96 	_DIAGASSERT(rl != NULL);
     97 
     98 	if (ps != NULL && (_ps_to_runelocale(ps) == NULL || forceinit)) {
     99 		_init_ps(rl, ps);
    100 	}
    101 }
    102 
    103 #endif
    104