locale/FreeBSD/wctrans.c

   1 /*-
   2  * Copyright (c) 2002 Tim J. Robbins.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD: src/lib/libc/locale/wctrans.c,v 1.3 2003/11/01 08:20:58 tjr Exp $");
  29
  30 #include "xlocale_private.h"
  31
  32 #include <errno.h>
  33 #include <string.h>
  34 #include <wctype.h>
  35
  36 enum {
  37         _WCT_ERROR      = 0,
  38         _WCT_TOLOWER    = 1,
  39         _WCT_TOUPPER    = 2
  40 };
  41
  42 wint_t
  43 towctrans_l(wint_t wc, wctrans_t desc, locale_t loc)
  44 {
  45
  46         NORMALIZE_LOCALE(loc);
  47         switch (desc) {
  48         case _WCT_TOLOWER:
  49                 wc = towlower_l(wc, loc);
  50                 break;
  51         case _WCT_TOUPPER:
  52                 wc = towupper_l(wc, loc);
  53                 break;
  54         case _WCT_ERROR:
  55         default:
  56                 errno = EINVAL;
  57                 break;
  58         }
  59
  60         return (wc);
  61 }
  62
  63 wint_t
  64 towctrans(wint_t wc, wctrans_t desc)
  65 {
  66         return towctrans_l(wc, desc, __current_locale());
  67 }
  68
  69 wctrans_t
  70 wctrans(const char *charclass)
  71 {
  72         struct {
  73                 const char      *name;
  74                 wctrans_t        trans;
  75         } ccls[] = {
  76                 { "tolower",    _WCT_TOLOWER },
  77                 { "toupper",    _WCT_TOUPPER },
  78                 { NULL,         _WCT_ERROR },           /* Default */
  79         };
  80         int i;
  81
  82         i = 0;
  83         while (ccls[i].name != NULL && strcmp(ccls[i].name, charclass) != 0)
  84                 i++;
  85
  86         if (ccls[i].trans == _WCT_ERROR)
  87                 errno = EINVAL;
  88         return (ccls[i].trans);
  89 }
  90
  91 /*
  92  * The extended locale version just calls the regular version.  If there
  93  * is ever support for arbitrary per-locale translations, this need to
  94  * be modified.
  95  */
  96 wctrans_t
  97 wctrans_l(const char *charclass, locale_t loc)
  98 {
  99         return wctrans(charclass);
 100 }