File: cns11643l1.h

package info (click to toggle)
glibc 2.28-8
  • links: PTS, VCS
  • area: main
  • in suites: buster, experimental, sid
  • size: 271,788 kB
  • sloc: ansic: 1,008,637; asm: 259,607; makefile: 11,271; sh: 10,477; python: 6,910; cpp: 4,992; perl: 2,258; awk: 2,005; yacc: 290; pascal: 182; sed: 73
file content (181 lines) | stat: -rw-r--r-- 5,040 bytes parent folder | download | duplicates (4)
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
/* Access functions for CNS 11643, plane 1 handling.
   Copyright (C) 1998-2018 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <stdint.h>
#include <gconv.h>

/* Table for CNS 11643, plane 1 to UCS4 conversion.  */
extern const uint16_t __cns11643l1_to_ucs4_tab[];


static inline uint32_t
__attribute ((always_inline))
cns11643l1_to_ucs4 (const unsigned 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) > 0x7d)
    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 > 0x21f2)
    return __UNKNOWN_10646_CHAR;

  (*s) += 2;

  return __cns11643l1_to_ucs4_tab[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR);
}


/* Tables for the UCS4 -> CNS conversion.  */
extern const char __cns11643l1_from_ucs4_tab1[][2];
extern const char __cns11643l1_from_ucs4_tab2[][2];
extern const char __cns11643l1_from_ucs4_tab3[][2];
extern const char __cns11643l1_from_ucs4_tab4[][2];
extern const char __cns11643l1_from_ucs4_tab5[][2];
extern const char __cns11643l1_from_ucs4_tab6[][2];
extern const char __cns11643l1_from_ucs4_tab7[][2];
extern const char __cns11643l1_from_ucs4_tab8[][2];
extern const char __cns11643l1_from_ucs4_tab9[][2];
extern const char __cns11643l1_from_ucs4_tab10[][2];
extern const char __cns11643l1_from_ucs4_tab11[][2];
extern const char __cns11643l1_from_ucs4_tab12[][2];
extern const char __cns11643l1_from_ucs4_tab13[][2];
extern const char __cns11643l1_from_ucs4_tab14[][2];


static inline size_t
__attribute ((always_inline))
ucs4_to_cns11643l1 (uint32_t wch, unsigned char *s, size_t avail)
{
  unsigned int ch = (unsigned int) wch;
  char buf[2];
  const char *cp = buf;

  switch (ch)
    {
    case 0xa7 ... 0xf7:
      cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7];
      break;
    case 0x2c7 ... 0x2d9:
      cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7];
      break;
    case 0x391 ... 0x3c9:
      cp = __cns11643l1_from_ucs4_tab3[ch - 0x391];
      break;
    case 0x2013 ... 0x203e:
      cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013];
      break;
    case 0x2103:
      cp = "\x22\x6a";
      break;
    case 0x2105:
      cp = "\x22\x22";
      break;
    case 0x2109:
      cp = "\x22\x6b";
      break;
    case 0x2160 ... 0x2169:
      buf[0] = '\x24';
      buf[1] = '\x2b' + (ch - 0x2160);
      break;
    case 0x2170 ... 0x2179:
      buf[0] = '\x26';
      buf[1] = '\x35' + (ch - 0x2170);
      break;
    case 0x2190 ... 0x2199:
      cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190];
      break;
    case 0x2215 ... 0x2267:
      cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215];
      break;
    case 0x22a5:
      cp = "\x22\x47";
      break;
    case 0x22bf:
      cp = "\x22\x4a";
      break;
    case 0x2400 ... 0x2421:
      cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400];
      break;
    case 0x2460 ... 0x247d:
      cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460];
      break;
    case 0x2500 ... 0x2642:
      cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500];
      break;
    case 0x3000 ... 0x3029:
      cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000];
      break;
    case 0x30fb:
      cp = "\x21\x26";
      break;
    case 0x3105 ... 0x3129:
      buf[0] = '\x25';
      buf[1] = '\x47' + (ch - 0x3105);
      break;
    case 0x32a3:
      cp = "\x22\x21";
      break;
    case 0x338e ... 0x33d5:
      cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e];
      break;
    case 0x4e00 ... 0x9f9c:
      cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00];
      break;
    case 0xfe30 ... 0xfe6b:
      cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30];
      break;
    case 0xff01 ... 0xff5d:
      cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01];
      break;
    case 0xffe0:
      cp = "\x22\x66";
      break;
    case 0xffe1:
      cp = "\x22\x67";
      break;
    case 0xffe5:
      cp = "\x22\x64";
      break;
    default:
      return __UNKNOWN_10646_CHAR;
    }

  if (cp[0] == '\0')
    return __UNKNOWN_10646_CHAR;

  if (avail < 2)
    return 0;

  s[0] = cp[0];
  s[1] = cp[1];

  return 2;
}