text: /*-
   * Copyright (c) 2002 Tim J. Robbins.
   * All rights reserved.
   *
   * Copyright (c) 2011 The FreeBSD Foundation
   * All rights reserved.
   * Portions of this software were developed by David Chisnall
   * under sponsorship from the FreeBSD Foundation.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * $FreeBSD: head/lib/libc/locale/wctrans.c 227753 2011-11-20 14:45:42Z theraven $
   */
  
  
  #include <errno.h>
  #include <string.h>
  #include <wctype.h>
  #include "xlocale_private.h"
  
  enum {
  	_WCT_ERROR	= 0,
  	_WCT_TOLOWER	= 1,
  	_WCT_TOUPPER	= 2
  };
  
  wint_t
  towctrans_l(wint_t wc, wctrans_t desc, locale_t locale)
  {
  	switch (desc) {
  	case _WCT_TOLOWER:
  		wc = towlower_l(wc, locale);
  		break;
  	case _WCT_TOUPPER:
  		wc = towupper_l(wc, locale);
  		break;
  	case _WCT_ERROR:
  	default:
  		errno = EINVAL;
  		break;
  	}
  
  	return (wc);
  }
  wint_t
  towctrans(wint_t wc, wctrans_t desc)
  {
  	return towctrans_l(wc, desc, __get_locale());
  }
  
  /*
   * wctrans() calls this will a 0 locale.  If this is ever modified to actually
   * use the locale, wctrans() must be modified to call __get_locale().
   */
  wctrans_t
  wctrans_l(const char *charclass, locale_t locale)
  {
  	struct {
  		const char	*name;
  		wctrans_t	 trans;
  	} ccls[] = {
  		{ "tolower",	_WCT_TOLOWER },
  		{ "toupper",	_WCT_TOUPPER },
  		{ NULL,		_WCT_ERROR },		/* Default */
  	};
  	int i;
  
  	i = 0;
  	while (ccls[i].name != NULL && strcmp(ccls[i].name, charclass) != 0)
  		i++;
  
  	if (ccls[i].trans == _WCT_ERROR)
  		errno = EINVAL;
  	return (ccls[i].trans);
  }
  
  wctrans_t
  wctrans(const char *charclass)
  {
  	return wctrans_l(charclass, 0);
  }
  
  