1 /* $NetBSD: multibyte.h,v 1.6 2013/08/18 20:03:48 joerg 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 /* mbstate_t private */ 33 34 #ifdef _BSD_MBSTATE_T_ 35 typedef _BSD_MBSTATE_T_ mbstate_t; 36 #undef _BSD_MBSTATE_T_ 37 #endif 38 39 typedef struct _RuneStatePriv { 40 _RuneLocale *__runelocale; 41 char __private __attribute__((__aligned__)); 42 } _RuneStatePriv; 43 44 typedef union _RuneState { 45 mbstate_t __pad; 46 struct _RuneStatePriv __priv; 47 #define rs_runelocale __priv.__runelocale 48 #define rs_private __priv.__private 49 } _RuneState; 50 #define _PRIVSIZE (sizeof(mbstate_t)-offsetof(_RuneStatePriv, __private)) 51 52 #define _RUNE_LOCALE(loc) \ 53 ((_RuneLocale *)((loc)->part_impl[(size_t)LC_CTYPE])) 54 55 #define _CITRUS_CTYPE(loc) \ 56 (((_RuneLocale *)((loc)->part_impl[(size_t)LC_CTYPE]))->rl_citrus_ctype) 57 58 /* */ 59 60 static __inline _RuneState * 61 _ps_to_runestate(mbstate_t *ps) 62 { 63 return (_RuneState *)(void *)ps; 64 } 65 66 static __inline _RuneState const * 67 _ps_to_runestate_const(mbstate_t const *ps) 68 { 69 return (_RuneState const *)(void const *)ps; 70 } 71 72 static __inline _RuneLocale * 73 _ps_to_runelocale(mbstate_t const *ps) 74 { 75 return _ps_to_runestate_const(ps)->rs_runelocale; 76 } 77 78 static __inline _citrus_ctype_t 79 _ps_to_ctype(mbstate_t const *ps, locale_t loc) 80 { 81 if (!ps) 82 return _CITRUS_CTYPE(loc); 83 84 _DIAGASSERT(_ps_to_runelocale(ps) != NULL); 85 86 return _ps_to_runelocale(ps)->rl_citrus_ctype; 87 } 88 89 static __inline void * 90 _ps_to_private(mbstate_t *ps) 91 { 92 if (ps == NULL) 93 return NULL; 94 return (void *)&_ps_to_runestate(ps)->rs_private; 95 } 96 97 static __inline void const * 98 _ps_to_private_const(mbstate_t const *ps) 99 { 100 if (ps == NULL) 101 return NULL; 102 return (void const *)&_ps_to_runestate_const(ps)->rs_private; 103 } 104 105 static __inline void 106 _init_ps(_RuneLocale *rl, mbstate_t *ps) 107 { 108 size_t dum; 109 _ps_to_runestate(ps)->rs_runelocale = rl; 110 _citrus_ctype_mbrtowc(rl->rl_citrus_ctype, NULL, NULL, 0, 111 _ps_to_private(ps), &dum); 112 } 113 114 static __inline void 115 _fixup_ps(_RuneLocale *rl, mbstate_t *ps, int forceinit) 116 { 117 /* for future multi-locale facility */ 118 _DIAGASSERT(rl != NULL); 119 120 if (ps != NULL && (_ps_to_runelocale(ps) == NULL || forceinit)) { 121 _init_ps(rl, ps); 122 } 123 } 124 125 #endif /*_MULTIBYTE_H_*/ 126