1 /* Access functions for CNS 11643, plane 2 handling.
2 Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
23 /* Table for CNS 11643, plane 1 to UCS4 conversion. */
24 extern const uint16_t __cns11643l1_to_ucs4_tab[];
25 /* Table for CNS 11643, plane 2 to UCS4 conversion. */
26 extern const uint16_t __cns11643l2_to_ucs4_tab[];
27 /* Table for CNS 11643, plane 14 to UCS4 conversion. */
28 extern const uint16_t __cns11643l14_to_ucs4_tab[];
31 static inline uint32_t
32 cns11643_to_ucs4 (const char **s, size_t avail, unsigned char offset)
34 unsigned char ch = *(*s);
40 if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x30)
41 return __UNKNOWN_10646_CHAR;
47 if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
48 return __UNKNOWN_10646_CHAR;
51 if ((ch3 - offset) <= 0x20 || (ch3 - offset) >= 0x7f)
52 return __UNKNOWN_10646_CHAR;
54 idx = (ch2 - 0x21 - offset) * 94 + (ch3 - 0x21 - offset);
56 if ((ch - 0x20 - offset) == 1)
59 return __UNKNOWN_10646_CHAR;
60 result = __cns11643l1_to_ucs4_tab[idx];
62 else if ((ch - 0x20 - offset) == 2)
65 return __UNKNOWN_10646_CHAR;
66 result = __cns11643l2_to_ucs4_tab[idx];
68 else if ((ch - 0x20 - offset) == 0xe)
71 return __UNKNOWN_10646_CHAR;
72 result = __cns11643l14_to_ucs4_tab[idx];
75 return __UNKNOWN_10646_CHAR;
80 result = __UNKNOWN_10646_CHAR;
86 /* Tables for the UCS4 -> CNS conversion. */
87 extern const char __cns11643l1_from_ucs4_tab1[][2];
88 extern const char __cns11643l1_from_ucs4_tab2[][2];
89 extern const char __cns11643l1_from_ucs4_tab3[][2];
90 extern const char __cns11643l1_from_ucs4_tab4[][2];
91 extern const char __cns11643l1_from_ucs4_tab5[][2];
92 extern const char __cns11643l1_from_ucs4_tab6[][2];
93 extern const char __cns11643l1_from_ucs4_tab7[][2];
94 extern const char __cns11643l1_from_ucs4_tab8[][2];
95 extern const char __cns11643l1_from_ucs4_tab9[][2];
96 extern const char __cns11643l1_from_ucs4_tab10[][2];
97 extern const char __cns11643l1_from_ucs4_tab11[][2];
98 extern const char __cns11643l1_from_ucs4_tab12[][2];
99 extern const char __cns11643l1_from_ucs4_tab13[][2];
100 extern const char __cns11643l1_from_ucs4_tab14[][2];
101 extern const char __cns11643_from_ucs4_tab[][3];
105 ucs4_to_cns11643 (uint32_t wch, char *s, size_t avail)
107 unsigned int ch = (unsigned int) wch;
109 const char *cp = buf;
115 cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7];
117 case 0x2c7 ... 0x2d9:
118 cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7];
120 case 0x391 ... 0x3c9:
121 cp = __cns11643l1_from_ucs4_tab3[ch - 0x391];
123 case 0x2013 ... 0x203e:
124 cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013];
135 case 0x2160 ... 0x2169:
137 buf[1] = '\x2b' + (ch - 0x2160);
139 case 0x2170 ... 0x2179:
141 buf[1] = '\x35' + (ch - 0x2170);
143 case 0x2190 ... 0x2199:
144 cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190];
146 case 0x2215 ... 0x2267:
147 cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215];
155 case 0x2400 ... 0x2421:
156 cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400];
158 case 0x2460 ... 0x247d:
159 cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460];
161 case 0x2500 ... 0x2642:
162 cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500];
164 case 0x3000 ... 0x3029:
165 cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000];
170 case 0x3105 ... 0x3129:
172 buf[1] = '\x47' + (ch - 0x3105);
177 case 0x338e ... 0x33d5:
178 cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e];
180 case 0x4e00 ... 0x9f9c:
181 cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00];
185 /* FALLTHROUGH. Let's try the other planes. */
186 case 0x9f9d ... 0x9fa5:
187 /* Let's try the other planes. */
189 cp = __cns11643_from_ucs4_tab[ch - 0x4e00];
191 case 0xfe30 ... 0xfe6b:
192 cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30];
194 case 0xff01 ... 0xff5d:
195 cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01];
207 return __UNKNOWN_10646_CHAR;
211 return __UNKNOWN_10646_CHAR;