lib/libc/locale/wctrans.c

   1 /*-
   2  * Copyright (c) 2002 Tim J. Robbins.
   3  * All rights reserved.
   4  *
   5  * Copyright (c) 2011 The FreeBSD Foundation
   6  * All rights reserved.
   7  * Portions of this software were developed by David Chisnall
   8  * under sponsorship from the FreeBSD Foundation.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD: head/lib/libc/locale/wctrans.c 227753 2011-11-20 14:45:42Z theraven $
  32  */
  33
  34
  35 #include <errno.h>
  36 #include <string.h>
  37 #include <wctype.h>
  38 #include "xlocale_private.h"
  39
  40 enum {
  41         _WCT_ERROR      = 0,
  42         _WCT_TOLOWER    = 1,
  43         _WCT_TOUPPER    = 2
  44 };
  45
  46 wint_t
  47 towctrans_l(wint_t wc, wctrans_t desc, locale_t locale)
  48 {
  49         switch (desc) {
  50         case _WCT_TOLOWER:
  51                 wc = towlower_l(wc, locale);
  52                 break;
  53         case _WCT_TOUPPER:
  54                 wc = towupper_l(wc, locale);
  55                 break;
  56         case _WCT_ERROR:
  57         default:
  58                 errno = EINVAL;
  59                 break;
  60         }
  61
  62         return (wc);
  63 }
  64 wint_t
  65 towctrans(wint_t wc, wctrans_t desc)
  66 {
  67         return towctrans_l(wc, desc, __get_locale());
  68 }
  69
  70 /*
  71  * wctrans() calls this will a 0 locale.  If this is ever modified to actually
  72  * use the locale, wctrans() must be modified to call __get_locale().
  73  */
  74 wctrans_t
  75 wctrans_l(const char *charclass, locale_t locale __unused)
  76 {
  77         struct {
  78                 const char      *name;
  79                 wctrans_t        trans;
  80         } ccls[] = {
  81                 { "tolower",    _WCT_TOLOWER },
  82                 { "toupper",    _WCT_TOUPPER },
  83                 { NULL,         _WCT_ERROR },           /* Default */
  84         };
  85         int i;
  86
  87         i = 0;
  88         while (ccls[i].name != NULL && strcmp(ccls[i].name, charclass) != 0)
  89                 i++;
  90
  91         if (ccls[i].trans == _WCT_ERROR)
  92                 errno = EINVAL;
  93         return (ccls[i].trans);
  94 }
  95
  96 wctrans_t
  97 wctrans(const char *charclass)
  98 {
  99         return wctrans_l(charclass, 0);
 100 }
 101