1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/* Access functions for GB2312 conversion.
Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _GB2312_H
#define _GB2312_H 1
#include <gconv.h>
#include <stdint.h>
/* Conversion table. */
extern const uint16_t gb2312_to_ucs[];
static inline wchar_t
gb2312_to_ucs4 (const char **s, size_t avail, unsigned char offset)
{
unsigned char ch = *(*s);
unsigned char ch2;
int idx;
if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x77)
return UNKNOWN_10646_CHAR;
if (avail < 2)
return 0;
ch2 = (*s)[1];
if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
return UNKNOWN_10646_CHAR;
idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset);
if (idx > 0x1ff1)
return UNKNOWN_10646_CHAR;
(*s) += 2;
return gb2312_to_ucs[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR);
}
extern const char gb2312_from_ucs4_tab1[][2];
extern const char gb2312_from_ucs4_tab2[][2];
extern const char gb2312_from_ucs4_tab3[][2];
extern const char gb2312_from_ucs4_tab4[][2];
extern const char gb2312_from_ucs4_tab5[][2];
extern const char gb2312_from_ucs4_tab6[][2];
extern const char gb2312_from_ucs4_tab7[][2];
extern const char gb2312_from_ucs4_tab8[][2];
extern const char gb2312_from_ucs4_tab9[][2];
static inline size_t
ucs4_to_gb2312 (wchar_t wch, char *s, size_t avail)
{
unsigned int ch = (unsigned int) wch;
char buf[2];
const char *cp = NULL;
if (ch < 0xa4)
return UNKNOWN_10646_CHAR;
else if (ch < 0x101)
cp = gb2312_from_ucs4_tab1[ch - 0xa4];
else if (ch == 0x113)
cp = "\x28\x25";
else if (ch == 0x11b)
cp = "\x28\x27";
else if (ch == 0x12b)
cp = "\x28\x29";
else if (ch == 0x14d)
cp = "\x28\x2d";
else if (ch == 0x16b)
cp = "\x28\x31";
else if (ch == 0x1ce)
cp = "\x28\x23";
else if (ch == 0x1d0)
cp = "\x28\x2b";
else if (ch == 0x1d2)
cp = "\x28\x2f";
else if (ch == 0x1d4)
cp = "\x28\x33";
else if (ch == 0x1d6)
cp = "\x28\x35";
else if (ch == 0x1d8)
cp = "\x28\x36";
else if (ch == 0x1da)
cp = "\x28\x37";
else if (ch == 0x1dc)
cp = "\x28\x38";
else if (ch == 0x2c7)
cp = "\x21\x26";
else if (ch == 0x2c9)
cp = "\x21\x25";
else if (ch >= 0x391 && ch <= 0x3c9)
cp = gb2312_from_ucs4_tab2[ch - 0x391];
else if (ch >= 0x401 && ch <= 0x451)
cp = gb2312_from_ucs4_tab3[ch - 0x401];
else if (ch >= 0x2015 && ch <= 0x203b)
cp = gb2312_from_ucs4_tab4[ch - 0x2015];
else if (ch >= 0x2103 && ch <= 0x22a5)
cp = gb2312_from_ucs4_tab5[ch - 0x2103];
else if (ch == 0x2313)
cp = "\x21\x50";
else if (ch >= 0x2460 && ch <= 0x249b)
cp = gb2312_from_ucs4_tab6[ch - 0x2460];
else if (ch >= 0x2500 && ch <= 0x254b)
{
buf[0] = '\x29';
buf[1] = '\x24' + (ch & 256);
cp = buf;
}
else if (ch == 0x25a0)
cp = "\x21\x76";
else if (ch == 0x25a1)
cp = "\x21\x75";
else if (ch == 0x25b2)
cp = "\x21\x78";
else if (ch == 0x25b3)
cp = "\x21\x77";
else if (ch == 0x25c6)
cp = "\x21\x74";
else if (ch == 0x25c7)
cp = "\x21\x73";
else if (ch == 0x25cb)
cp = "\x21\x70";
else if (ch == 0x25ce)
cp = "\x21\x72";
else if (ch == 0x25cf)
cp = "\x21\x71";
else if (ch == 0x2605)
cp = "\x21\x6f";
else if (ch == 0x2606)
cp = "\x21\x6e";
else if (ch == 0x2640)
cp = "\x21\x62";
else if (ch == 0x2642)
cp = "\x21\x61";
else if (ch >= 0x3000 && ch <= 0x3129)
cp = gb2312_from_ucs4_tab7[ch - 0x3000];
else if (ch >= 0x3220 && ch <= 0x3229)
{
buf[0] = '\x22';
buf[1] = '\x65' + (ch - 0x3220);
cp = buf;
}
else if (ch >= 0x4e00 && ch <= 0x9fa0)
cp = gb2312_from_ucs4_tab8[ch - 0x4e00];
else if (ch >= 0xff01 && ch <= 0xff5e)
cp = gb2312_from_ucs4_tab9[ch - 0xff01];
else if (ch == 0xffe0)
cp = "\x21\x69";
else if (ch == 0xffe1)
cp = "\x21\x6a";
else if (ch == 0xffe3)
cp = "\x23\x7e";
else if (ch == 0xffe5)
cp = "\x23\x24";
else
return UNKNOWN_10646_CHAR;
if (cp[1] != '\0' && avail < 2)
return 0;
s[0] = cp[0];
s[1] = cp[1];
return 2;
}
#endif /* gb2312.h */
|
