1 /*
   2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   3  * Copyright (c) 2002 Tim J. Robbins.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27 
  28 #include "lint.h"
  29 #include <errno.h>
  30 #include <string.h>
  31 #include <wctype.h>
  32 
  33 enum {
  34         _WCT_ERROR      = 0,
  35         _WCT_TOLOWER    = 1,
  36         _WCT_TOUPPER    = 2
  37 };
  38 
  39 wint_t
  40 towctrans(wint_t wc, wctrans_t desc)
  41 {
  42 
  43         switch (desc) {
  44         case _WCT_TOLOWER:
  45                 wc = towlower(wc);
  46                 break;
  47         case _WCT_TOUPPER:
  48                 wc = towupper(wc);
  49                 break;
  50         case _WCT_ERROR:
  51         default:
  52                 errno = EINVAL;
  53                 break;
  54         }
  55 
  56         return (wc);
  57 }
  58 
  59 wctrans_t
  60 wctrans(const char *charclass)
  61 {
  62         struct {
  63                 const char      *name;
  64                 wctrans_t        trans;
  65         } ccls[] = {
  66                 { "tolower",    _WCT_TOLOWER },
  67                 { "toupper",    _WCT_TOUPPER },
  68                 { NULL,         _WCT_ERROR },           /* Default */
  69         };
  70         int i;
  71 
  72         i = 0;
  73         while (ccls[i].name != NULL && strcmp(ccls[i].name, charclass) != 0)
  74                 i++;
  75 
  76         if (ccls[i].trans == _WCT_ERROR)
  77                 errno = EINVAL;
  78         return (ccls[i].trans);
  79 }