xref: /illumos-gate/usr/src/lib/libc/port/locale/mskanji.c (revision 241c90a06e8d1708235651863df515a2d522a03a)
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  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. All advertising materials mentioning features or use of this software
20  *    must display the following acknowledgement:
21  *      This product includes software developed by Phase One, Inc.
22  * 4. The name of Phase One, Inc. may be used to endorse or promote products
23  *    derived from this software without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  */
37 
38 #include "lint.h"
39 #include <sys/types.h>
40 #include <errno.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <wchar.h>
44 #include "mblocal.h"
45 #include "lctype.h"
46 
47 static size_t	_MSKanji_mbrtowc(wchar_t *_RESTRICT_KYWD,
48 		    const char *_RESTRICT_KYWD,
49 		    size_t, mbstate_t *_RESTRICT_KYWD, boolean_t);
50 static int	_MSKanji_mbsinit(const mbstate_t *);
51 static size_t	_MSKanji_wcrtomb(char *_RESTRICT_KYWD, wchar_t,
52 		    mbstate_t *_RESTRICT_KYWD);
53 static size_t	_MSKanji_mbsnrtowcs(wchar_t *_RESTRICT_KYWD,
54 		    const char **_RESTRICT_KYWD, size_t, size_t,
55 		    mbstate_t *_RESTRICT_KYWD);
56 static size_t	_MSKanji_wcsnrtombs(char *_RESTRICT_KYWD,
57 		    const wchar_t **_RESTRICT_KYWD, size_t, size_t,
58 		    mbstate_t *_RESTRICT_KYWD);
59 
60 typedef struct {
61 	wchar_t	ch;
62 } _MSKanjiState;
63 
64 void
65 _MSKanji_init(struct lc_ctype *lct)
66 {
67 
68 	lct->lc_mbrtowc = _MSKanji_mbrtowc;
69 	lct->lc_wcrtomb = _MSKanji_wcrtomb;
70 	lct->lc_mbsnrtowcs = _MSKanji_mbsnrtowcs;
71 	lct->lc_wcsnrtombs = _MSKanji_wcsnrtombs;
72 	lct->lc_mbsinit = _MSKanji_mbsinit;
73 	lct->lc_max_mblen = 2;
74 	lct->lc_is_ascii = 0;
75 }
76 
77 static int
78 _MSKanji_mbsinit(const mbstate_t *ps)
79 {
80 
81 	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
82 }
83 
84 static size_t
85 _MSKanji_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
86     size_t n, mbstate_t *_RESTRICT_KYWD ps, boolean_t zero)
87 {
88 	_MSKanjiState *ms;
89 	wchar_t wc;
90 
91 	ms = (_MSKanjiState *)ps;
92 
93 	if ((ms->ch & ~0xFF) != 0) {
94 		/* Bad conversion state. */
95 		errno = EINVAL;
96 		return ((size_t)-1);
97 	}
98 
99 	if (s == NULL) {
100 		s = "";
101 		n = 1;
102 		pwc = NULL;
103 	}
104 
105 	if (n == 0)
106 		/* Incomplete multibyte sequence */
107 		return ((size_t)-2);
108 
109 	if (ms->ch != 0) {
110 		if (*s == '\0') {
111 			errno = EILSEQ;
112 			return ((size_t)-1);
113 		}
114 		wc = (ms->ch << 8) | (*s & 0xFF);
115 		if (pwc != NULL)
116 			*pwc = wc;
117 		ms->ch = 0;
118 		return (1);
119 	}
120 	wc = *s++ & 0xff;
121 	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
122 		if (n < 2) {
123 			/* Incomplete multibyte sequence */
124 			ms->ch = wc;
125 			return ((size_t)-2);
126 		}
127 		if (*s == '\0') {
128 			errno = EILSEQ;
129 			return ((size_t)-1);
130 		}
131 		wc = (wc << 8) | (*s++ & 0xff);
132 		if (pwc != NULL)
133 			*pwc = wc;
134 		return (2);
135 	} else {
136 		if (pwc != NULL)
137 			*pwc = wc;
138 		if (zero || wc != L'\0') {
139 			return (1);
140 		} else {
141 			return (0);
142 		}
143 	}
144 }
145 
146 static size_t
147 _MSKanji_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc,
148     mbstate_t *_RESTRICT_KYWD ps)
149 {
150 	_MSKanjiState *ms;
151 	int len, i;
152 
153 	ms = (_MSKanjiState *)ps;
154 
155 	if (ms->ch != 0) {
156 		errno = EINVAL;
157 		return ((size_t)-1);
158 	}
159 
160 	if (s == NULL)
161 		/* Reset to initial shift state (no-op) */
162 		return (1);
163 	len = (wc > 0x100) ? 2 : 1;
164 	for (i = len; i-- > 0; )
165 		*s++ = wc >> (i << 3);
166 	return (len);
167 }
168 
169 static size_t
170 _MSKanji_mbsnrtowcs(wchar_t *_RESTRICT_KYWD dst,
171     const char **_RESTRICT_KYWD src, size_t nms,
172     size_t len, mbstate_t *_RESTRICT_KYWD ps)
173 {
174 	return (__mbsnrtowcs_std(dst, src, nms, len, ps, _MSKanji_mbrtowc));
175 }
176 
177 static size_t
178 _MSKanji_wcsnrtombs(char *_RESTRICT_KYWD dst,
179     const wchar_t **_RESTRICT_KYWD src, size_t nwc,
180     size_t len, mbstate_t *_RESTRICT_KYWD ps)
181 {
182 	return (__wcsnrtombs_std(dst, src, nwc, len, ps, _MSKanji_wcrtomb));
183 }
184