xref: /dragonfly/lib/libc/locale/mskanji.c (revision 91dc43dd)
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 extern int __mb_sb_limit;
55 
56 static size_t	_MSKanji_mbrtowc(wchar_t * __restrict, const char * __restrict,
57 		    size_t, mbstate_t * __restrict);
58 static int	_MSKanji_mbsinit(const mbstate_t *);
59 static size_t	_MSKanji_wcrtomb(char * __restrict, wchar_t,
60 		    mbstate_t * __restrict);
61 static size_t	_MSKanji_mbsnrtowcs(wchar_t * __restrict,
62 		    const char ** __restrict, size_t, size_t,
63 		    mbstate_t * __restrict);
64 static size_t	_MSKanji_wcsnrtombs(char * __restrict,
65 		    const wchar_t ** __restrict, size_t, size_t,
66 		    mbstate_t * __restrict);
67 
68 typedef struct {
69 	wchar_t	ch;
70 } _MSKanjiState;
71 
72 int
73 _MSKanji_init(struct xlocale_ctype *l, _RuneLocale *rl)
74 {
75 
76 	l->__mbrtowc = _MSKanji_mbrtowc;
77 	l->__wcrtomb = _MSKanji_wcrtomb;
78 	l->__mbsnrtowcs = _MSKanji_mbsnrtowcs;
79 	l->__wcsnrtombs = _MSKanji_wcsnrtombs;
80 	l->__mbsinit = _MSKanji_mbsinit;
81 	l->runes = rl;
82 	l->__mb_cur_max = 2;
83 	l->__mb_sb_limit = 256;
84 	return (0);
85 }
86 
87 static int
88 _MSKanji_mbsinit(const mbstate_t *ps)
89 {
90 
91 	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
92 }
93 
94 static size_t
95 _MSKanji_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
96     mbstate_t * __restrict ps)
97 {
98 	_MSKanjiState *ms;
99 	wchar_t wc;
100 
101 	ms = (_MSKanjiState *)ps;
102 
103 	if ((ms->ch & ~0xFF) != 0) {
104 		/* Bad conversion state. */
105 		errno = EINVAL;
106 		return ((size_t)-1);
107 	}
108 
109 	if (s == NULL) {
110 		s = "";
111 		n = 1;
112 		pwc = NULL;
113 	}
114 
115 	if (n == 0)
116 		/* Incomplete multibyte sequence */
117 		return ((size_t)-2);
118 
119 	if (ms->ch != 0) {
120 		if (*s == '\0') {
121 			errno = EILSEQ;
122 			return ((size_t)-1);
123 		}
124 		wc = (ms->ch << 8) | (*s & 0xFF);
125 		if (pwc != NULL)
126 			*pwc = wc;
127 		ms->ch = 0;
128 		return (1);
129 	}
130 	wc = *s++ & 0xff;
131 	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
132 		if (n < 2) {
133 			/* Incomplete multibyte sequence */
134 			ms->ch = wc;
135 			return ((size_t)-2);
136 		}
137 		if (*s == '\0') {
138 			errno = EILSEQ;
139 			return ((size_t)-1);
140 		}
141 		wc = (wc << 8) | (*s++ & 0xff);
142 		if (pwc != NULL)
143 			*pwc = wc;
144 		return (2);
145 	} else {
146 		if (pwc != NULL)
147 			*pwc = wc;
148 		return (wc == L'\0' ? 0 : 1);
149 	}
150 }
151 
152 static size_t
153 _MSKanji_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
154 {
155 	_MSKanjiState *ms;
156 	int len, i;
157 
158 	ms = (_MSKanjiState *)ps;
159 
160 	if (ms->ch != 0) {
161 		errno = EINVAL;
162 		return ((size_t)-1);
163 	}
164 
165 	if (s == NULL)
166 		/* Reset to initial shift state (no-op) */
167 		return (1);
168 	len = (wc > 0x100) ? 2 : 1;
169 	for (i = len; i-- > 0; )
170 		*s++ = wc >> (i << 3);
171 	return (len);
172 }
173 
174 static size_t
175 _MSKanji_mbsnrtowcs(wchar_t * __restrict dst,
176     const char ** __restrict src, size_t nms,
177     size_t len, mbstate_t * __restrict ps)
178 {
179 	return (__mbsnrtowcs_std(dst, src, nms, len, ps, _MSKanji_mbrtowc));
180 }
181 
182 static size_t
183 _MSKanji_wcsnrtombs(char * __restrict dst,
184     const wchar_t ** __restrict src, size_t nwc,
185     size_t len, mbstate_t * __restrict ps)
186 {
187 	return (__wcsnrtombs_std(dst, src, nwc, len, ps, _MSKanji_wcrtomb));
188 }
189