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 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *      This product includes software developed by Phase One, Inc.
20 * 4. The name of Phase One, Inc. may be used to endorse or promote products
21 *    derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#if defined(LIBC_SCCS) && !defined(lint)
37static char sccsid[] = "@(#)mskanji.c	1.0 (Phase One) 5/5/95";
38#endif /* LIBC_SCCS and not lint */
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD: src/lib/libc/locale/mskanji.c,v 1.18 2007/10/13 16:28:22 ache Exp $");
41
42#include "xlocale_private.h"
43
44#include <sys/types.h>
45#include <errno.h>
46#include <runetype.h>
47#include <stdlib.h>
48#include <string.h>
49#include <wchar.h>
50#include "mblocal.h"
51
52static size_t	_MSKanji_mbrtowc(wchar_t * __restrict, const char * __restrict,
53		    size_t, mbstate_t * __restrict, locale_t);
54static int	_MSKanji_mbsinit(const mbstate_t *, locale_t);
55static size_t	_MSKanji_wcrtomb(char * __restrict, wchar_t,
56		    mbstate_t * __restrict, locale_t);
57
58typedef struct {
59	wchar_t	ch;
60} _MSKanjiState;
61
62int
63_MSKanji_init(struct __xlocale_st_runelocale *xrl)
64{
65
66	xrl->__mbrtowc = _MSKanji_mbrtowc;
67	xrl->__wcrtomb = _MSKanji_wcrtomb;
68	xrl->__mbsinit = _MSKanji_mbsinit;
69	xrl->__mb_cur_max = 2;
70	xrl->__mb_sb_limit = 256;
71	return (0);
72}
73
74static int
75_MSKanji_mbsinit(const mbstate_t *ps, locale_t loc __unused)
76{
77
78	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
79}
80
81static size_t
82_MSKanji_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
83    mbstate_t * __restrict ps, locale_t loc __unused)
84{
85	_MSKanjiState *ms;
86	wchar_t wc;
87
88	ms = (_MSKanjiState *)ps;
89
90	if ((ms->ch & ~0xFF) != 0) {
91		/* Bad conversion state. */
92		errno = EINVAL;
93		return ((size_t)-1);
94	}
95
96	if (s == NULL) {
97		s = "";
98		n = 1;
99		pwc = NULL;
100	}
101
102	if (n == 0)
103		/* Incomplete multibyte sequence */
104		return ((size_t)-2);
105
106	if (ms->ch != 0) {
107		if (*s == '\0') {
108			errno = EILSEQ;
109			return ((size_t)-1);
110		}
111		wc = (ms->ch << 8) | (*s & 0xFF);
112		if (pwc != NULL)
113			*pwc = wc;
114		ms->ch = 0;
115		return (1);
116	}
117	wc = *s++ & 0xff;
118	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
119		if (n < 2) {
120			/* Incomplete multibyte sequence */
121			ms->ch = wc;
122			return ((size_t)-2);
123		}
124		if (*s == '\0') {
125			errno = EILSEQ;
126			return ((size_t)-1);
127		}
128		wc = (wc << 8) | (*s++ & 0xff);
129		if (pwc != NULL)
130			*pwc = wc;
131		return (2);
132	} else {
133		if (pwc != NULL)
134			*pwc = wc;
135		return (wc == L'\0' ? 0 : 1);
136	}
137}
138
139static size_t
140_MSKanji_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps, locale_t loc __unused)
141{
142	_MSKanjiState *ms;
143	int len, i;
144
145	ms = (_MSKanjiState *)ps;
146
147	if (ms->ch != 0) {
148		errno = EINVAL;
149		return ((size_t)-1);
150	}
151
152	if (s == NULL)
153		/* Reset to initial shift state (no-op) */
154		return (1);
155	len = (wc > 0x100) ? 2 : 1;
156	for (i = len; i-- > 0; )
157		*s++ = wc >> (i << 3);
158	return (len);
159}
160