lib/libc/locale/wctype.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2002 Tim J. Robbins.
   5  * All rights reserved.
   6  *
   7  * Copyright (c) 2011 The FreeBSD Foundation
   8  * All rights reserved.
   9  * Portions of this software were developed by David Chisnall
  10  * under sponsorship from the FreeBSD Foundation.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __FBSDID("$FreeBSD$");
  36
  37 #include <ctype.h>
  38 #include <string.h>
  39 #include <wctype.h>
  40 #include <xlocale.h>
  41
  42 #undef iswctype
  43 int
  44 iswctype(wint_t wc, wctype_t charclass)
  45 {
  46         return (__istype(wc, charclass));
  47 }
  48 int
  49 iswctype_l(wint_t wc, wctype_t charclass, locale_t locale)
  50 {
  51         return __istype_l(wc, charclass, locale);
  52 }
  53
  54 /*
  55  * IMPORTANT: The 0 in the call to this function in wctype() must be changed to
  56  * __get_locale() if wctype_l() is ever modified to actually use the locale
  57  * parameter.
  58  */
  59 wctype_t
  60 wctype_l(const char *property, locale_t locale)
  61 {
  62         const char *propnames =
  63                 "alnum\0"
  64                 "alpha\0"
  65                 "blank\0"
  66                 "cntrl\0"
  67                 "digit\0"
  68                 "graph\0"
  69                 "lower\0"
  70                 "print\0"
  71                 "punct\0"
  72                 "space\0"
  73                 "upper\0"
  74                 "xdigit\0"
  75                 "ideogram\0"    /* BSD extension */
  76                 "special\0"     /* BSD extension */
  77                 "phonogram\0"   /* BSD extension */
  78                 "number\0"      /* BSD extension */
  79                 "rune\0";       /* BSD extension */
  80         static const wctype_t propmasks[] = {
  81                 _CTYPE_A|_CTYPE_N,
  82                 _CTYPE_A,
  83                 _CTYPE_B,
  84                 _CTYPE_C,
  85                 _CTYPE_D,
  86                 _CTYPE_G,
  87                 _CTYPE_L,
  88                 _CTYPE_R,
  89                 _CTYPE_P,
  90                 _CTYPE_S,
  91                 _CTYPE_U,
  92                 _CTYPE_X,
  93                 _CTYPE_I,
  94                 _CTYPE_T,
  95                 _CTYPE_Q,
  96                 _CTYPE_N,
  97                 0xFFFFFF00L
  98         };
  99         size_t len1, len2;
 100         const char *p;
 101         const wctype_t *q;
 102
 103         len1 = strlen(property);
 104         q = propmasks;
 105         for (p = propnames; (len2 = strlen(p)) != 0; p += len2 + 1) {
 106                 if (len1 == len2 && memcmp(property, p, len1) == 0)
 107                         return (*q);
 108                 q++;
 109         }
 110
 111         return (0UL);
 112 }
 113
 114 wctype_t wctype(const char *property)
 115 {
 116         return wctype_l(property, 0);
 117 }