xref: /illumos-gate/usr/src/lib/libc/port/locale/mskanji.c (revision 8d0c3d29bb99f6521f2dc5058a7e4debebad7899)
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 /*
37  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
38  * Use is subject to license terms.
39  */
40 
41 #include "lint.h"
42 #include <sys/types.h>
43 #include <errno.h>
44 #include "runetype.h"
45 #include <stdlib.h>
46 #include <string.h>
47 #include <wchar.h>
48 #include "mblocal.h"
49 
50 static size_t	_MSKanji_mbrtowc(wchar_t *_RESTRICT_KYWD,
51 		    const char *_RESTRICT_KYWD,
52 		    size_t, mbstate_t *_RESTRICT_KYWD);
53 static int	_MSKanji_mbsinit(const mbstate_t *);
54 static size_t	_MSKanji_wcrtomb(char *_RESTRICT_KYWD, wchar_t,
55 		    mbstate_t *_RESTRICT_KYWD);
56 
57 typedef struct {
58 	wchar_t	ch;
59 } _MSKanjiState;
60 
61 int
62 _MSKanji_init(_RuneLocale *rl)
63 {
64 
65 	__mbrtowc = _MSKanji_mbrtowc;
66 	__wcrtomb = _MSKanji_wcrtomb;
67 	__mbsinit = _MSKanji_mbsinit;
68 	_CurrentRuneLocale = rl;
69 	__ctype[520] = 2;
70 	return (0);
71 }
72 
73 static int
74 _MSKanji_mbsinit(const mbstate_t *ps)
75 {
76 
77 	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
78 }
79 
80 static size_t
81 _MSKanji_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
82     size_t n, mbstate_t *_RESTRICT_KYWD ps)
83 {
84 	_MSKanjiState *ms;
85 	wchar_t wc;
86 
87 	ms = (_MSKanjiState *)ps;
88 
89 	if ((ms->ch & ~0xFF) != 0) {
90 		/* Bad conversion state. */
91 		errno = EINVAL;
92 		return ((size_t)-1);
93 	}
94 
95 	if (s == NULL) {
96 		s = "";
97 		n = 1;
98 		pwc = NULL;
99 	}
100 
101 	if (n == 0)
102 		/* Incomplete multibyte sequence */
103 		return ((size_t)-2);
104 
105 	if (ms->ch != 0) {
106 		if (*s == '\0') {
107 			errno = EILSEQ;
108 			return ((size_t)-1);
109 		}
110 		wc = (ms->ch << 8) | (*s & 0xFF);
111 		if (pwc != NULL)
112 			*pwc = wc;
113 		ms->ch = 0;
114 		return (1);
115 	}
116 	wc = *s++ & 0xff;
117 	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
118 		if (n < 2) {
119 			/* Incomplete multibyte sequence */
120 			ms->ch = wc;
121 			return ((size_t)-2);
122 		}
123 		if (*s == '\0') {
124 			errno = EILSEQ;
125 			return ((size_t)-1);
126 		}
127 		wc = (wc << 8) | (*s++ & 0xff);
128 		if (pwc != NULL)
129 			*pwc = wc;
130 		return (2);
131 	} else {
132 		if (pwc != NULL)
133 			*pwc = wc;
134 		return (wc == L'\0' ? 0 : 1);
135 	}
136 }
137 
138 static size_t
139 _MSKanji_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc,
140     mbstate_t *_RESTRICT_KYWD ps)
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