1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2002 Tim J. Robbins.
5 * All rights reserved.
6 *
7 * Copyright (c) 2011 The FreeBSD Foundation
8 *
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 <errno.h>
35#include <string.h>
36#include <wctype.h>
37#include "xlocale_private.h"
38
39enum {
40	_WCT_ERROR	= 0,
41	_WCT_TOLOWER	= 1,
42	_WCT_TOUPPER	= 2
43};
44
45wint_t
46towctrans_l(wint_t wc, wctrans_t desc, locale_t locale)
47{
48	switch (desc) {
49	case _WCT_TOLOWER:
50		wc = towlower_l(wc, locale);
51		break;
52	case _WCT_TOUPPER:
53		wc = towupper_l(wc, locale);
54		break;
55	case _WCT_ERROR:
56	default:
57		errno = EINVAL;
58		break;
59	}
60
61	return (wc);
62}
63wint_t
64towctrans(wint_t wc, wctrans_t desc)
65{
66	return towctrans_l(wc, desc, __get_locale());
67}
68
69/*
70 * wctrans() calls this will a 0 locale.  If this is ever modified to actually
71 * use the locale, wctrans() must be modified to call __get_locale().
72 */
73wctrans_t
74wctrans_l(const char *charclass, locale_t locale)
75{
76	struct {
77		const char	*name;
78		wctrans_t	 trans;
79	} ccls[] = {
80		{ "tolower",	_WCT_TOLOWER },
81		{ "toupper",	_WCT_TOUPPER },
82		{ NULL,		_WCT_ERROR },		/* Default */
83	};
84	int i;
85
86	i = 0;
87	while (ccls[i].name != NULL && strcmp(ccls[i].name, charclass) != 0)
88		i++;
89
90	if (ccls[i].trans == _WCT_ERROR)
91		errno = EINVAL;
92	return (ccls[i].trans);
93}
94
95wctrans_t
96wctrans(const char *charclass)
97{
98	return wctrans_l(charclass, 0);
99}
100
101