1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
5 * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
6 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
7 *
8 *    ja_JP.SJIS locale table for BSD4.4/rune
9 *    version 1.0
10 *    (C) Sin'ichiro MIYATANI / Phase One, Inc
11 *    May 12, 1995
12 *
13 * Copyright (c) 2011 The FreeBSD Foundation
14 * All rights reserved.
15 * Portions of this software were developed by David Chisnall
16 * under sponsorship from the FreeBSD Foundation.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 *    notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 *    notice, this list of conditions and the following disclaimer in the
25 *    documentation and/or other materials provided with the distribution.
26 * 3. All advertising materials mentioning features or use of this software
27 *    must display the following acknowledgement:
28 *      This product includes software developed by Phase One, Inc.
29 * 4. The name of Phase One, Inc. may be used to endorse or promote products
30 *    derived from this software without specific prior written permission.
31 *
32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 * SUCH DAMAGE.
43 */
44
45#if defined(LIBC_SCCS) && !defined(lint)
46static char sccsid[] = "@(#)mskanji.c	1.0 (Phase One) 5/5/95";
47#endif /* LIBC_SCCS and not lint */
48#include <sys/cdefs.h>
49__FBSDID("$FreeBSD$");
50
51#include <sys/types.h>
52#include <errno.h>
53#include <runetype.h>
54#include <stdlib.h>
55#include <string.h>
56#include <wchar.h>
57#include "mblocal.h"
58
59extern int __mb_sb_limit;
60
61static size_t	_MSKanji_mbrtowc(wchar_t * __restrict, const char * __restrict,
62		    size_t, mbstate_t * __restrict);
63static int	_MSKanji_mbsinit(const mbstate_t *);
64static size_t	_MSKanji_wcrtomb(char * __restrict, wchar_t,
65		    mbstate_t * __restrict);
66static size_t	_MSKanji_mbsnrtowcs(wchar_t * __restrict,
67		    const char ** __restrict, size_t, size_t,
68		    mbstate_t * __restrict);
69static size_t	_MSKanji_wcsnrtombs(char * __restrict,
70		    const wchar_t ** __restrict, size_t, size_t,
71		    mbstate_t * __restrict);
72
73typedef struct {
74	wchar_t	ch;
75} _MSKanjiState;
76
77int
78_MSKanji_init(struct xlocale_ctype *l, _RuneLocale *rl)
79{
80
81	l->__mbrtowc = _MSKanji_mbrtowc;
82	l->__wcrtomb = _MSKanji_wcrtomb;
83	l->__mbsnrtowcs = _MSKanji_mbsnrtowcs;
84	l->__wcsnrtombs = _MSKanji_wcsnrtombs;
85	l->__mbsinit = _MSKanji_mbsinit;
86	l->runes = rl;
87	l->__mb_cur_max = 2;
88	l->__mb_sb_limit = 224;
89	return (0);
90}
91
92static int
93_MSKanji_mbsinit(const mbstate_t *ps)
94{
95
96	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
97}
98
99static size_t
100_MSKanji_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
101    mbstate_t * __restrict ps)
102{
103	_MSKanjiState *ms;
104	wchar_t wc;
105
106	ms = (_MSKanjiState *)ps;
107
108	if ((ms->ch & ~0xFF) != 0) {
109		/* Bad conversion state. */
110		errno = EINVAL;
111		return ((size_t)-1);
112	}
113
114	if (s == NULL) {
115		s = "";
116		n = 1;
117		pwc = NULL;
118	}
119
120	if (n == 0)
121		/* Incomplete multibyte sequence */
122		return ((size_t)-2);
123
124	if (ms->ch != 0) {
125		if (*s == '\0') {
126			errno = EILSEQ;
127			return ((size_t)-1);
128		}
129		wc = (ms->ch << 8) | (*s & 0xFF);
130		if (pwc != NULL)
131			*pwc = wc;
132		ms->ch = 0;
133		return (1);
134	}
135	wc = *s++ & 0xff;
136	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
137		if (n < 2) {
138			/* Incomplete multibyte sequence */
139			ms->ch = wc;
140			return ((size_t)-2);
141		}
142		if (*s == '\0') {
143			errno = EILSEQ;
144			return ((size_t)-1);
145		}
146		wc = (wc << 8) | (*s++ & 0xff);
147		if (pwc != NULL)
148			*pwc = wc;
149		return (2);
150	} else {
151		if (pwc != NULL)
152			*pwc = wc;
153		return (wc == L'\0' ? 0 : 1);
154	}
155}
156
157static size_t
158_MSKanji_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
159{
160	_MSKanjiState *ms;
161	int len, i;
162
163	ms = (_MSKanjiState *)ps;
164
165	if (ms->ch != 0) {
166		errno = EINVAL;
167		return ((size_t)-1);
168	}
169
170	if (s == NULL)
171		/* Reset to initial shift state (no-op) */
172		return (1);
173	len = (wc > 0x100) ? 2 : 1;
174	for (i = len; i-- > 0; )
175		*s++ = wc >> (i << 3);
176	return (len);
177}
178
179static size_t
180_MSKanji_mbsnrtowcs(wchar_t * __restrict dst,
181    const char ** __restrict src, size_t nms,
182    size_t len, mbstate_t * __restrict ps)
183{
184	return (__mbsnrtowcs_std(dst, src, nms, len, ps, _MSKanji_mbrtowc));
185}
186
187static size_t
188_MSKanji_wcsnrtombs(char * __restrict dst,
189    const wchar_t ** __restrict src, size_t nwc,
190    size_t len, mbstate_t * __restrict ps)
191{
192	return (__wcsnrtombs_std(dst, src, nwc, len, ps, _MSKanji_wcrtomb));
193}
194