lib/libc/locale/iswctype_mb.c

   1 /* $NetBSD: iswctype_mb.c,v 1.4 2009/01/18 19:53:11 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c)2008 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 #include <sys/cdefs.h>
  30 #if defined(LIBC_SCCS) && !defined(lint)
  31 __RCSID("$NetBSD: iswctype_mb.c,v 1.4 2009/01/18 19:53:11 christos Exp $");
  32 #endif /* LIBC_SCCS and not lint */
  33
  34 #include "namespace.h"
  35 #include <sys/types.h>
  36 #include <assert.h>
  37 #include <ctype.h>
  38 #include <errno.h>
  39 #include <langinfo.h>
  40 #define __SETLOCALE_SOURCE__
  41 #include <locale.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <wctype.h>
  45
  46 #include "setlocale_local.h"
  47
  48 #include "rune.h"
  49 #include "_wctype_local.h"
  50 #include "_wctrans_local.h"
  51
  52 #define _RUNE_LOCALE() ((_RuneLocale const *) \
  53     (*_current_locale())->part_impl[(size_t)LC_CTYPE])
  54
  55 #define _ISWCTYPE_FUNC(name, index)                     \
  56 int                                                     \
  57 isw##name(wint_t wc)                                    \
  58 {                                                       \
  59         _RuneLocale const *rl;                          \
  60         _WCTypeEntry const *te;                         \
  61                                                         \
  62         rl = _RUNE_LOCALE();                            \
  63         te = &rl->rl_wctype[index];                     \
  64         return _iswctype_priv(rl, wc, te);              \
  65 }
  66 _ISWCTYPE_FUNC(alnum,  _WCTYPE_INDEX_ALNUM)
  67 _ISWCTYPE_FUNC(alpha,  _WCTYPE_INDEX_ALPHA)
  68 _ISWCTYPE_FUNC(blank,  _WCTYPE_INDEX_BLANK)
  69 _ISWCTYPE_FUNC(cntrl,  _WCTYPE_INDEX_CNTRL)
  70 _ISWCTYPE_FUNC(digit,  _WCTYPE_INDEX_DIGIT)
  71 _ISWCTYPE_FUNC(graph,  _WCTYPE_INDEX_GRAPH)
  72 _ISWCTYPE_FUNC(lower,  _WCTYPE_INDEX_LOWER)
  73 _ISWCTYPE_FUNC(print,  _WCTYPE_INDEX_PRINT)
  74 _ISWCTYPE_FUNC(punct,  _WCTYPE_INDEX_PUNCT)
  75 _ISWCTYPE_FUNC(space,  _WCTYPE_INDEX_SPACE)
  76 _ISWCTYPE_FUNC(upper,  _WCTYPE_INDEX_UPPER)
  77 _ISWCTYPE_FUNC(xdigit, _WCTYPE_INDEX_XDIGIT)
  78
  79 #define _TOWCTRANS_FUNC(name, index)                    \
  80 wint_t                                                  \
  81 tow##name(wint_t wc)                                    \
  82 {                                                       \
  83         _RuneLocale const *rl;                          \
  84         _WCTransEntry const *te;                        \
  85                                                         \
  86         rl = _RUNE_LOCALE();                            \
  87         te = &rl->rl_wctrans[index];                    \
  88         return _towctrans_priv(rl, wc, te);             \
  89 }
  90 _TOWCTRANS_FUNC(upper, _WCTRANS_INDEX_UPPER)
  91 _TOWCTRANS_FUNC(lower, _WCTRANS_INDEX_LOWER)
  92
  93 wctype_t
  94 wctype(const char *charclass)
  95 {
  96         _RuneLocale const *rl;
  97         size_t i;
  98
  99         rl = _RUNE_LOCALE();
 100         for (i = 0; i < _WCTYPE_NINDEXES; ++i) {
 101                 if (!strcmp(rl->rl_wctype[i].te_name, charclass))
 102                         return (wctype_t)__UNCONST(&rl->rl_wctype[i]);
 103         }
 104         return (wctype_t)NULL;
 105 }
 106
 107 wctrans_t
 108 wctrans(const char *charmap)
 109 {
 110         _RuneLocale const *rl;
 111         size_t i;
 112
 113         rl = _RUNE_LOCALE();
 114         for (i = 0; i < _WCTRANS_NINDEXES; ++i) {
 115                 _DIAGASSERT(rl->rl_wctrans[i].te_name != NULL);
 116                 if (!strcmp(rl->rl_wctrans[i].te_name, charmap))
 117                         return (wctrans_t)__UNCONST(&rl->rl_wctype[i]);
 118         }
 119         return (wctrans_t)NULL;
 120 }
 121
 122 int
 123 iswctype(wint_t wc, wctype_t charclass)
 124 {
 125         _RuneLocale const *rl;
 126         _WCTypeEntry const *te;
 127
 128         if (charclass == NULL) {
 129                 errno = EINVAL;
 130                 return 0;
 131         }
 132         rl = _RUNE_LOCALE();
 133         te = (_WCTypeEntry const *)charclass;
 134         return _iswctype_priv(rl, wc, te);
 135 }
 136
 137 wint_t
 138 towctrans(wint_t wc, wctrans_t charmap)
 139 {
 140         _RuneLocale const *rl;
 141         _WCTransEntry const *te;
 142
 143         if (charmap == NULL) {
 144                 errno = EINVAL;
 145                 return wc;
 146         }
 147         rl = _RUNE_LOCALE();
 148         te = (_WCTransEntry const *)charmap;
 149         return _towctrans_priv(rl, wc, te);
 150 }
 151
 152 __weak_alias(wcwidth,_wcwidth)
 153
 154 int
 155 wcwidth(wchar_t wc)
 156 {
 157         _RuneLocale const *rl;
 158         _RuneType x;
 159
 160         if (wc == L'\0')
 161                 return 0;
 162         rl = _RUNE_LOCALE();
 163         x = _runetype_priv(rl, wc);
 164         if (x & _CTYPE_R)
 165                 return ((unsigned)x & _CTYPE_SWM) >> _CTYPE_SWS;
 166         return -1;
 167 }
 168
 169 int
 170 wcswidth(const wchar_t * __restrict ws, size_t wn)
 171 {
 172         _RuneLocale const *rl;
 173         _RuneType x;
 174         int width;
 175
 176         _DIAGASSERT(ws != NULL);
 177
 178         rl = _RUNE_LOCALE();
 179         width = 0;
 180         while (wn > 0 && *ws != L'\0') {
 181                 x = _runetype_priv(rl, *ws);
 182                 if ((x & _CTYPE_R) == 0)
 183                         return -1;
 184                 width += ((unsigned)x & _CTYPE_SWM) >> _CTYPE_SWS;
 185                 ++ws, --wn;
 186         }
 187         return width;
 188 }