xref: /titanic_51/usr/src/lib/libc/port/locale/mskanji.c (revision 45e662eb8429b38c18931ebeed30f2e5287ae51b)
1 /*
2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
3  * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
4  *
5  *    ja_JP.SJIS locale table for BSD4.4/rune
6  *    version 1.0
7  *    (C) Sin'ichiro MIYATANI / Phase One, Inc
8  *    May 12, 1995
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *      This product includes software developed by Phase One, Inc.
21  * 4. The name of Phase One, Inc. may be used to endorse or promote products
22  *    derived from this software without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 #include "lint.h"
38 #include <sys/types.h>
39 #include <errno.h>
40 #include "runetype.h"
41 #include <stdlib.h>
42 #include <string.h>
43 #include <wchar.h>
44 #include "mblocal.h"
45 
46 static size_t	_MSKanji_mbrtowc(wchar_t *_RESTRICT_KYWD,
47 		    const char *_RESTRICT_KYWD,
48 		    size_t, mbstate_t *_RESTRICT_KYWD);
49 static int	_MSKanji_mbsinit(const mbstate_t *);
50 static size_t	_MSKanji_wcrtomb(char *_RESTRICT_KYWD, wchar_t,
51 		    mbstate_t *_RESTRICT_KYWD);
52 
53 typedef struct {
54 	wchar_t	ch;
55 } _MSKanjiState;
56 
57 int
58 _MSKanji_init(_RuneLocale *rl)
59 {
60 
61 	__mbrtowc = _MSKanji_mbrtowc;
62 	__wcrtomb = _MSKanji_wcrtomb;
63 	__mbsinit = _MSKanji_mbsinit;
64 	_CurrentRuneLocale = rl;
65 	__ctype[520] = 2;
66 	charset_is_ascii = 0;
67 	return (0);
68 }
69 
70 static int
71 _MSKanji_mbsinit(const mbstate_t *ps)
72 {
73 
74 	return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
75 }
76 
77 static size_t
78 _MSKanji_mbrtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s,
79     size_t n, mbstate_t *_RESTRICT_KYWD ps)
80 {
81 	_MSKanjiState *ms;
82 	wchar_t wc;
83 
84 	ms = (_MSKanjiState *)ps;
85 
86 	if ((ms->ch & ~0xFF) != 0) {
87 		/* Bad conversion state. */
88 		errno = EINVAL;
89 		return ((size_t)-1);
90 	}
91 
92 	if (s == NULL) {
93 		s = "";
94 		n = 1;
95 		pwc = NULL;
96 	}
97 
98 	if (n == 0)
99 		/* Incomplete multibyte sequence */
100 		return ((size_t)-2);
101 
102 	if (ms->ch != 0) {
103 		if (*s == '\0') {
104 			errno = EILSEQ;
105 			return ((size_t)-1);
106 		}
107 		wc = (ms->ch << 8) | (*s & 0xFF);
108 		if (pwc != NULL)
109 			*pwc = wc;
110 		ms->ch = 0;
111 		return (1);
112 	}
113 	wc = *s++ & 0xff;
114 	if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
115 		if (n < 2) {
116 			/* Incomplete multibyte sequence */
117 			ms->ch = wc;
118 			return ((size_t)-2);
119 		}
120 		if (*s == '\0') {
121 			errno = EILSEQ;
122 			return ((size_t)-1);
123 		}
124 		wc = (wc << 8) | (*s++ & 0xff);
125 		if (pwc != NULL)
126 			*pwc = wc;
127 		return (2);
128 	} else {
129 		if (pwc != NULL)
130 			*pwc = wc;
131 		return (wc == L'\0' ? 0 : 1);
132 	}
133 }
134 
135 static size_t
136 _MSKanji_wcrtomb(char *_RESTRICT_KYWD s, wchar_t wc,
137     mbstate_t *_RESTRICT_KYWD ps)
138 {
139 	_MSKanjiState *ms;
140 	int len, i;
141 
142 	ms = (_MSKanjiState *)ps;
143 
144 	if (ms->ch != 0) {
145 		errno = EINVAL;
146 		return ((size_t)-1);
147 	}
148 
149 	if (s == NULL)
150 		/* Reset to initial shift state (no-op) */
151 		return (1);
152 	len = (wc > 0x100) ? 2 : 1;
153 	for (i = len; i-- > 0; )
154 		*s++ = wc >> (i << 3);
155 	return (len);
156 }
157