xref: /dragonfly/lib/libc/locale/mskanji.c (revision 029e6489)
1 /*
2  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
3  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
4  * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
5  *
6  *    ja_JP.SJIS locale table for BSD4.4/rune
7  *    version 1.0
8  *    (C) Sin'ichiro MIYATANI / Phase One, Inc
9  *    May 12, 1995
10  *
11  * Copyright (c) 2011 The FreeBSD Foundation
12  * All rights reserved.
13  * Portions of this software were developed by David Chisnall
14  * under sponsorship from the FreeBSD Foundation.
15  *
16  * Redistribution and use in source and binary forms, with or without
17  * modification, are permitted provided that the following conditions
18  * are met:
19  * 1. Redistributions of source code must retain the above copyright
20  *    notice, this list of conditions and the following disclaimer.
21  * 2. Redistributions in binary form must reproduce the above copyright
22  *    notice, this list of conditions and the following disclaimer in the
23  *    documentation and/or other materials provided with the distribution.
24  * 3. All advertising materials mentioning features or use of this software
25  *    must display the following acknowledgement:
26  *      This product includes software developed by Phase One, Inc.
27  * 4. The name of Phase One, Inc. may be used to endorse or promote products
28  *    derived from this software without specific prior written permission.
29  *
30  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40  * SUCH DAMAGE.
41  *
42  * @(#)mskanji.c	1.0 (Phase One) 5/5/95
43  */
44 
45 
46 #include <sys/types.h>
47 #include <errno.h>
48 #include <runetype.h>
49 #include <stdlib.h>
50 #include <string.h>
51 #include <wchar.h>
52 #include "mblocal.h"
53 
54 static size_t	_MSKanji_mbrtowc(wchar_t * __restrict, const char * __restrict,
55 		    size_t, mbstate_t * __restrict);
56 static int	_MSKanji_mbsinit(const mbstate_t *);
57 static size_t	_MSKanji_wcrtomb(char * __restrict, wchar_t,
58 		    mbstate_t * __restrict);
59 static size_t	_MSKanji_mbsnrtowcs(wchar_t * __restrict,
60 		    const char ** __restrict, size_t, size_t,
61 		    mbstate_t * __restrict);
62 static size_t	_MSKanji_wcsnrtombs(char * __restrict,
63 		    const wchar_t ** __restrict, size_t, size_t,
64 		    mbstate_t * __restrict);
65 
66 typedef struct {
67 	wchar_t	ch;
68 } _MSKanjiState;
69 
70 int
71 _MSKanji_init(struct xlocale_ctype *l, _RuneLocale *rl)
72 {
73 
74 	l->__mbrtowc = _MSKanji_mbrtowc;
75 	l->__wcrtomb = _MSKanji_wcrtomb;
76 	l->__mbsnrtowcs = _MSKanji_mbsnrtowcs;
77 	l->__wcsnrtombs = _MSKanji_wcsnrtombs;
78 	l->__mbsinit = _MSKanji_mbsinit;
79 	l->runes = rl;
80 	l->__mb_cur_max = 2;
81 	l->__mb_sb_limit = 256;
82 	return (0);
83 }
84 
85 static int
86 _MSKanji_mbsinit(const mbstate_t *ps)
87 {
88 
89 	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
90 }
91 
92 static size_t
93 _MSKanji_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
94     mbstate_t * __restrict ps)
95 {
96 	_MSKanjiState *ms;
97 	wchar_t wc;
98 
99 	ms = (_MSKanjiState *)ps;
100 
101 	if ((ms->ch & ~0xFF) != 0) {
102 		/* Bad conversion state. */
103 		errno = EINVAL;
104 		return ((size_t)-1);
105 	}
106 
107 	if (s == NULL) {
108 		s = "";
109 		n = 1;
110 		pwc = NULL;
111 	}
112 
113 	if (n == 0)
114 		/* Incomplete multibyte sequence */
115 		return ((size_t)-2);
116 
117 	if (ms->ch != 0) {
118 		if (*s == '\0') {
119 			errno = EILSEQ;
120 			return ((size_t)-1);
121 		}
122 		wc = (ms->ch << 8) | (*s & 0xFF);
123 		if (pwc != NULL)
124 			*pwc = wc;
125 		ms->ch = 0;
126 		return (1);
127 	}
128 	wc = *s++ & 0xff;
129 	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
130 		if (n < 2) {
131 			/* Incomplete multibyte sequence */
132 			ms->ch = wc;
133 			return ((size_t)-2);
134 		}
135 		if (*s == '\0') {
136 			errno = EILSEQ;
137 			return ((size_t)-1);
138 		}
139 		wc = (wc << 8) | (*s++ & 0xff);
140 		if (pwc != NULL)
141 			*pwc = wc;
142 		return (2);
143 	} else {
144 		if (pwc != NULL)
145 			*pwc = wc;
146 		return (wc == L'\0' ? 0 : 1);
147 	}
148 }
149 
150 static size_t
151 _MSKanji_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
152 {
153 	_MSKanjiState *ms;
154 	int len, i;
155 
156 	ms = (_MSKanjiState *)ps;
157 
158 	if (ms->ch != 0) {
159 		errno = EINVAL;
160 		return ((size_t)-1);
161 	}
162 
163 	if (s == NULL)
164 		/* Reset to initial shift state (no-op) */
165 		return (1);
166 	len = (wc > 0x100) ? 2 : 1;
167 	for (i = len; i-- > 0; )
168 		*s++ = wc >> (i << 3);
169 	return (len);
170 }
171 
172 static size_t
173 _MSKanji_mbsnrtowcs(wchar_t * __restrict dst,
174     const char ** __restrict src, size_t nms,
175     size_t len, mbstate_t * __restrict ps)
176 {
177 	return (__mbsnrtowcs_std(dst, src, nms, len, ps, _MSKanji_mbrtowc));
178 }
179 
180 static size_t
181 _MSKanji_wcsnrtombs(char * __restrict dst,
182     const wchar_t ** __restrict src, size_t nwc,
183     size_t len, mbstate_t * __restrict ps)
184 {
185 	return (__wcsnrtombs_std(dst, src, nwc, len, ps, _MSKanji_wcrtomb));
186 }
187