1/*
2 * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
3 *
4 *    ja_JP.SJIS locale table for BSD4.4/rune
5 *    version 1.0
6 *    (C) Sin'ichiro MIYATANI / Phase One, Inc
7 *    May 12, 1995
8 *
9 * Copyright (c) 2011 The FreeBSD Foundation
10 * All rights reserved.
11 * Portions of this software were developed by David Chisnall
12 * under sponsorship from the FreeBSD Foundation.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in the
21 *    documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 *    must display the following acknowledgement:
24 *      This product includes software developed by Phase One, Inc.
25 * 4. The name of Phase One, Inc. may be used to endorse or promote products
26 *    derived from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 */
40
41#if defined(LIBC_SCCS) && !defined(lint)
42static char sccsid[] = "@(#)mskanji.c	1.0 (Phase One) 5/5/95";
43#endif /* LIBC_SCCS and not lint */
44#include <sys/cdefs.h>
45__FBSDID("$FreeBSD$");
46
47#include <sys/types.h>
48#include <errno.h>
49#include <runetype.h>
50#include <stdlib.h>
51#include <string.h>
52#include <wchar.h>
53#include "mblocal.h"
54
55extern int __mb_sb_limit;
56
57static size_t	_MSKanji_mbrtowc(wchar_t * __restrict, const char * __restrict,
58		    size_t, mbstate_t * __restrict);
59static int	_MSKanji_mbsinit(const mbstate_t *);
60static size_t	_MSKanji_wcrtomb(char * __restrict, wchar_t,
61		    mbstate_t * __restrict);
62
63typedef struct {
64	wchar_t	ch;
65} _MSKanjiState;
66
67int
68_MSKanji_init(struct xlocale_ctype *l, _RuneLocale *rl)
69{
70
71	l->__mbrtowc = _MSKanji_mbrtowc;
72	l->__wcrtomb = _MSKanji_wcrtomb;
73	l->__mbsinit = _MSKanji_mbsinit;
74	l->runes = rl;
75	l->__mb_cur_max = 2;
76	l->__mb_sb_limit = 256;
77	return (0);
78}
79
80static int
81_MSKanji_mbsinit(const mbstate_t *ps)
82{
83
84	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
85}
86
87static size_t
88_MSKanji_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
89    mbstate_t * __restrict ps)
90{
91	_MSKanjiState *ms;
92	wchar_t wc;
93
94	ms = (_MSKanjiState *)ps;
95
96	if ((ms->ch & ~0xFF) != 0) {
97		/* Bad conversion state. */
98		errno = EINVAL;
99		return ((size_t)-1);
100	}
101
102	if (s == NULL) {
103		s = "";
104		n = 1;
105		pwc = NULL;
106	}
107
108	if (n == 0)
109		/* Incomplete multibyte sequence */
110		return ((size_t)-2);
111
112	if (ms->ch != 0) {
113		if (*s == '\0') {
114			errno = EILSEQ;
115			return ((size_t)-1);
116		}
117		wc = (ms->ch << 8) | (*s & 0xFF);
118		if (pwc != NULL)
119			*pwc = wc;
120		ms->ch = 0;
121		return (1);
122	}
123	wc = *s++ & 0xff;
124	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
125		if (n < 2) {
126			/* Incomplete multibyte sequence */
127			ms->ch = wc;
128			return ((size_t)-2);
129		}
130		if (*s == '\0') {
131			errno = EILSEQ;
132			return ((size_t)-1);
133		}
134		wc = (wc << 8) | (*s++ & 0xff);
135		if (pwc != NULL)
136			*pwc = wc;
137		return (2);
138	} else {
139		if (pwc != NULL)
140			*pwc = wc;
141		return (wc == L'\0' ? 0 : 1);
142	}
143}
144
145static size_t
146_MSKanji_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
147{
148	_MSKanjiState *ms;
149	int len, i;
150
151	ms = (_MSKanjiState *)ps;
152
153	if (ms->ch != 0) {
154		errno = EINVAL;
155		return ((size_t)-1);
156	}
157
158	if (s == NULL)
159		/* Reset to initial shift state (no-op) */
160		return (1);
161	len = (wc > 0x100) ? 2 : 1;
162	for (i = len; i-- > 0; )
163		*s++ = wc >> (i << 3);
164	return (len);
165}
166