1/*-
2 * Copyright (c) 2004 Tim J. Robbins. All rights reserved.
3 * Copyright (c) 2003 David Xu <davidxu@freebsd.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/param.h>
| 1/*-
2 * Copyright (c) 2004 Tim J. Robbins. All rights reserved.
3 * Copyright (c) 2003 David Xu <davidxu@freebsd.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/param.h>
|
29__FBSDID("$FreeBSD: head/lib/libc/locale/gb2312.c 128089 2004-04-10 14:36:57Z davidxu $");
| 29__FBSDID("$FreeBSD: head/lib/libc/locale/gb2312.c 128155 2004-04-12 13:09:18Z tjr $");
|
30
| 30
|
| 31#include <errno.h>
|
31#include <runetype.h>
32#include <stdlib.h>
33#include <string.h>
34#include <wchar.h>
35
36extern size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict,
37 size_t, mbstate_t * __restrict);
38extern int (*__mbsinit)(const mbstate_t *);
39extern size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict);
40
41int _GB2312_init(_RuneLocale *);
42size_t _GB2312_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t,
43 mbstate_t * __restrict);
44int _GB2312_mbsinit(const mbstate_t *);
45size_t _GB2312_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict);
46
47typedef struct {
48 int count;
49 u_char bytes[2];
50} _GB2312State;
51
52int
53_GB2312_init(_RuneLocale *rl)
54{
55
56 _CurrentRuneLocale = rl;
57 __mbrtowc = _GB2312_mbrtowc;
58 __wcrtomb = _GB2312_wcrtomb;
59 __mbsinit = _GB2312_mbsinit;
60 __mb_cur_max = 2;
61 return (0);
62}
63
64int
65_GB2312_mbsinit(const mbstate_t *ps)
66{
67
68 return (ps == NULL || ((const _GB2312State *)ps)->count == 0);
69}
70
71static __inline int
72_GB2312_check(const char *str, size_t n)
73{
74 const u_char *s = (const u_char *)str;
75
76 if (n == 0)
77 /* Incomplete multibyte sequence */
78 return (-2);
79 if (s[0] >= 0xa1 && s[0] <= 0xfe) {
80 if (n < 2)
81 /* Incomplete multibyte sequence */
82 return (-2);
83 if (s[1] < 0xa1 || s[1] > 0xfe)
84 /* Invalid multibyte sequence */
85 return (-1);
86 return (2);
87 } else if (s[0] & 0x80) {
88 /* Invalid multibyte sequence */
89 return (-1);
90 }
91 return (1);
92}
93
94size_t
95_GB2312_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
96 mbstate_t * __restrict ps)
97{
98 _GB2312State *gs;
99 wchar_t wc;
100 int i, len, ocount;
101 size_t ncopy;
102
103 gs = (_GB2312State *)ps;
104
| 32#include <runetype.h>
33#include <stdlib.h>
34#include <string.h>
35#include <wchar.h>
36
37extern size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict,
38 size_t, mbstate_t * __restrict);
39extern int (*__mbsinit)(const mbstate_t *);
40extern size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict);
41
42int _GB2312_init(_RuneLocale *);
43size_t _GB2312_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t,
44 mbstate_t * __restrict);
45int _GB2312_mbsinit(const mbstate_t *);
46size_t _GB2312_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict);
47
48typedef struct {
49 int count;
50 u_char bytes[2];
51} _GB2312State;
52
53int
54_GB2312_init(_RuneLocale *rl)
55{
56
57 _CurrentRuneLocale = rl;
58 __mbrtowc = _GB2312_mbrtowc;
59 __wcrtomb = _GB2312_wcrtomb;
60 __mbsinit = _GB2312_mbsinit;
61 __mb_cur_max = 2;
62 return (0);
63}
64
65int
66_GB2312_mbsinit(const mbstate_t *ps)
67{
68
69 return (ps == NULL || ((const _GB2312State *)ps)->count == 0);
70}
71
72static __inline int
73_GB2312_check(const char *str, size_t n)
74{
75 const u_char *s = (const u_char *)str;
76
77 if (n == 0)
78 /* Incomplete multibyte sequence */
79 return (-2);
80 if (s[0] >= 0xa1 && s[0] <= 0xfe) {
81 if (n < 2)
82 /* Incomplete multibyte sequence */
83 return (-2);
84 if (s[1] < 0xa1 || s[1] > 0xfe)
85 /* Invalid multibyte sequence */
86 return (-1);
87 return (2);
88 } else if (s[0] & 0x80) {
89 /* Invalid multibyte sequence */
90 return (-1);
91 }
92 return (1);
93}
94
95size_t
96_GB2312_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
97 mbstate_t * __restrict ps)
98{
99 _GB2312State *gs;
100 wchar_t wc;
101 int i, len, ocount;
102 size_t ncopy;
103
104 gs = (_GB2312State *)ps;
105
|
| 106 if (gs->count < 0 || gs->count > sizeof(gs->bytes)) {
107 errno = EINVAL;
108 return ((size_t)-1);
109 }
110
|
105 if (s == NULL) {
106 s = "";
107 n = 1;
108 pwc = NULL;
109 }
110
111 ncopy = MIN(MIN(n, MB_CUR_MAX), sizeof(gs->bytes) - gs->count);
112 memcpy(gs->bytes + gs->count, s, ncopy);
113 ocount = gs->count;
114 gs->count += ncopy;
115 s = (char *)gs->bytes;
116 n = gs->count;
117
118 if ((len = _GB2312_check(s, n)) < 0)
119 return ((size_t)len);
120 wc = 0;
121 i = len;
122 while (i-- > 0)
123 wc = (wc << 8) | (unsigned char)*s++;
124 if (pwc != NULL)
125 *pwc = wc;
126 gs->count = 0;
127 return (wc == L'\0' ? 0 : len - ocount);
128}
129
130size_t
| 111 if (s == NULL) {
112 s = "";
113 n = 1;
114 pwc = NULL;
115 }
116
117 ncopy = MIN(MIN(n, MB_CUR_MAX), sizeof(gs->bytes) - gs->count);
118 memcpy(gs->bytes + gs->count, s, ncopy);
119 ocount = gs->count;
120 gs->count += ncopy;
121 s = (char *)gs->bytes;
122 n = gs->count;
123
124 if ((len = _GB2312_check(s, n)) < 0)
125 return ((size_t)len);
126 wc = 0;
127 i = len;
128 while (i-- > 0)
129 wc = (wc << 8) | (unsigned char)*s++;
130 if (pwc != NULL)
131 *pwc = wc;
132 gs->count = 0;
133 return (wc == L'\0' ? 0 : len - ocount);
134}
135
136size_t
|
131_GB2312_wcrtomb(char * __restrict s, wchar_t wc,
132 mbstate_t * __restrict ps __unused)
| 137_GB2312_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
|
133{
| 138{
|
| 139 _GB2312State *gs;
|
134
| 140
|
| 141 gs = (_GB2312State *)ps;
142
143 if (gs->count != 0) {
144 errno = EINVAL;
145 return ((size_t)-1);
146 }
147
|
135 if (s == NULL)
136 /* Reset to initial shift state (no-op) */
137 return (1);
138 if (wc & 0x8000) {
139 *s++ = (wc >> 8) & 0xff;
140 *s = wc & 0xff;
141 return (2);
142 }
143 *s = wc & 0xff;
144 return (1);
145}
| 148 if (s == NULL)
149 /* Reset to initial shift state (no-op) */
150 return (1);
151 if (wc & 0x8000) {
152 *s++ = (wc >> 8) & 0xff;
153 *s = wc & 0xff;
154 return (2);
155 }
156 *s = wc & 0xff;
157 return (1);
158}
|