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Commit | Line | Data |
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289ac9dd | 1 | /* Access functions for CNS 11643 handling. |
085a4412 UD |
2 | Copyright (C) 1998,1999,2000,2001,2002,2003,2007 |
3 | Free Software Foundation, Inc. | |
2b474353 UD |
4 | This file is part of the GNU C Library. |
5 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. | |
6 | ||
7 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
8 | modify it under the terms of the GNU Lesser General Public |
9 | License as published by the Free Software Foundation; either | |
10 | version 2.1 of the License, or (at your option) any later version. | |
2b474353 UD |
11 | |
12 | The GNU C Library is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 15 | Lesser General Public License for more details. |
2b474353 | 16 | |
41bdb6e2 AJ |
17 | You should have received a copy of the GNU Lesser General Public |
18 | License along with the GNU C Library; if not, write to the Free | |
19 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
20 | 02111-1307 USA. */ | |
2b474353 UD |
21 | |
22 | #include <stdint.h> | |
23 | ||
289ac9dd | 24 | |
755104ed UD |
25 | /* Table for CNS 11643, plane 1 to UCS4 conversion. */ |
26 | extern const uint16_t __cns11643l1_to_ucs4_tab[]; | |
2b474353 | 27 | /* Table for CNS 11643, plane 2 to UCS4 conversion. */ |
8619129f | 28 | extern const uint16_t __cns11643l2_to_ucs4_tab[]; |
289ac9dd UD |
29 | /* Table for CNS 11643, plane 3 to UCS4 conversion. */ |
30 | extern const uint32_t __cns11643l3_to_ucs4_tab[]; | |
31 | /* Table for CNS 11643, plane 4 to UCS4 conversion. */ | |
32 | extern const uint32_t __cns11643l4_to_ucs4_tab[]; | |
33 | /* Table for CNS 11643, plane 5 to UCS4 conversion. */ | |
34 | extern const uint32_t __cns11643l5_to_ucs4_tab[]; | |
35 | /* Table for CNS 11643, plane 6 to UCS4 conversion. */ | |
36 | extern const uint32_t __cns11643l6_to_ucs4_tab[]; | |
37 | /* Table for CNS 11643, plane 7 to UCS4 conversion. */ | |
38 | extern const uint32_t __cns11643l7_to_ucs4_tab[]; | |
39 | /* Table for CNS 11643, plane 15 (old) to UCS4 conversion. */ | |
40 | extern const uint32_t __cns11643l15_to_ucs4_tab[]; | |
2b474353 UD |
41 | |
42 | ||
9b26f5c4 | 43 | static inline uint32_t |
dd9423a6 | 44 | __attribute ((always_inline)) |
085a4412 | 45 | cns11643_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset) |
2b474353 UD |
46 | { |
47 | unsigned char ch = *(*s); | |
48 | unsigned char ch2; | |
49 | unsigned char ch3; | |
9b26f5c4 | 50 | uint32_t result; |
2b474353 UD |
51 | int idx; |
52 | ||
53 | if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x30) | |
d64b6ad0 | 54 | return __UNKNOWN_10646_CHAR; |
2b474353 UD |
55 | |
56 | if (avail < 3) | |
57 | return 0; | |
58 | ||
59 | ch2 = (*s)[1]; | |
60 | if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f) | |
d64b6ad0 | 61 | return __UNKNOWN_10646_CHAR; |
2b474353 UD |
62 | |
63 | ch3 = (*s)[2]; | |
64 | if ((ch3 - offset) <= 0x20 || (ch3 - offset) >= 0x7f) | |
d64b6ad0 | 65 | return __UNKNOWN_10646_CHAR; |
2b474353 UD |
66 | |
67 | idx = (ch2 - 0x21 - offset) * 94 + (ch3 - 0x21 - offset); | |
68 | ||
289ac9dd | 69 | switch (ch - 0x20 - offset) |
2b474353 | 70 | { |
289ac9dd | 71 | case 1: |
b79f74cd | 72 | if (idx > 0x21f2) |
d64b6ad0 | 73 | return __UNKNOWN_10646_CHAR; |
8619129f | 74 | result = __cns11643l1_to_ucs4_tab[idx]; |
289ac9dd UD |
75 | break; |
76 | case 2: | |
2b474353 | 77 | if (idx > 0x1de1) |
d64b6ad0 | 78 | return __UNKNOWN_10646_CHAR; |
8619129f | 79 | result = __cns11643l2_to_ucs4_tab[idx]; |
289ac9dd UD |
80 | break; |
81 | case 3: | |
2b474353 | 82 | if (idx > 0x19bd) |
d64b6ad0 | 83 | return __UNKNOWN_10646_CHAR; |
289ac9dd UD |
84 | result = __cns11643l3_to_ucs4_tab[idx]; |
85 | break; | |
86 | case 4: | |
87 | if (idx > 0x1c81) | |
88 | return __UNKNOWN_10646_CHAR; | |
89 | result = __cns11643l4_to_ucs4_tab[idx]; | |
90 | break; | |
91 | case 5: | |
92 | if (idx > 0x219a) | |
93 | return __UNKNOWN_10646_CHAR; | |
94 | result = __cns11643l5_to_ucs4_tab[idx]; | |
95 | break; | |
96 | case 6: | |
97 | if (idx > 0x18f3) | |
98 | return __UNKNOWN_10646_CHAR; | |
99 | result = __cns11643l6_to_ucs4_tab[idx]; | |
100 | break; | |
101 | case 7: | |
102 | if (idx > 0x198a) | |
103 | return __UNKNOWN_10646_CHAR; | |
104 | result = __cns11643l7_to_ucs4_tab[idx]; | |
105 | break; | |
106 | case 15: | |
107 | if (idx > 0x1c00) | |
108 | return __UNKNOWN_10646_CHAR; | |
109 | result = __cns11643l15_to_ucs4_tab[idx]; | |
110 | break; | |
111 | default: | |
112 | return __UNKNOWN_10646_CHAR; | |
2b474353 | 113 | } |
2b474353 UD |
114 | |
115 | if (result != L'\0') | |
116 | (*s) += 3; | |
117 | else | |
d64b6ad0 | 118 | result = __UNKNOWN_10646_CHAR; |
2b474353 UD |
119 | |
120 | return result; | |
121 | } | |
122 | ||
123 | ||
124 | /* Tables for the UCS4 -> CNS conversion. */ | |
8619129f UD |
125 | extern const char __cns11643l1_from_ucs4_tab1[][2]; |
126 | extern const char __cns11643l1_from_ucs4_tab2[][2]; | |
127 | extern const char __cns11643l1_from_ucs4_tab3[][2]; | |
128 | extern const char __cns11643l1_from_ucs4_tab4[][2]; | |
129 | extern const char __cns11643l1_from_ucs4_tab5[][2]; | |
130 | extern const char __cns11643l1_from_ucs4_tab6[][2]; | |
131 | extern const char __cns11643l1_from_ucs4_tab7[][2]; | |
132 | extern const char __cns11643l1_from_ucs4_tab8[][2]; | |
133 | extern const char __cns11643l1_from_ucs4_tab9[][2]; | |
134 | extern const char __cns11643l1_from_ucs4_tab10[][2]; | |
135 | extern const char __cns11643l1_from_ucs4_tab11[][2]; | |
136 | extern const char __cns11643l1_from_ucs4_tab12[][2]; | |
137 | extern const char __cns11643l1_from_ucs4_tab13[][2]; | |
138 | extern const char __cns11643l1_from_ucs4_tab14[][2]; | |
289ac9dd UD |
139 | extern const char __cns11643_from_ucs4p0_tab[][3]; |
140 | extern const char __cns11643_from_ucs4p2_tab[][3]; | |
93a568aa | 141 | extern const char __cns11643_from_ucs4p2c_tab[][3]; |
2b474353 UD |
142 | |
143 | ||
144 | static inline size_t | |
dd9423a6 | 145 | __attribute ((always_inline)) |
085a4412 | 146 | ucs4_to_cns11643 (uint32_t wch, unsigned char *s, size_t avail) |
2b474353 UD |
147 | { |
148 | unsigned int ch = (unsigned int) wch; | |
149 | char buf[2]; | |
8619129f | 150 | const char *cp = buf; |
8c0b7170 | 151 | size_t needed = 2; |
2b474353 | 152 | |
8619129f | 153 | switch (ch) |
2b474353 | 154 | { |
8619129f UD |
155 | case 0xa7 ... 0xf7: |
156 | cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7]; | |
157 | break; | |
158 | case 0x2c7 ... 0x2d9: | |
159 | cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7]; | |
160 | break; | |
161 | case 0x391 ... 0x3c9: | |
162 | cp = __cns11643l1_from_ucs4_tab3[ch - 0x391]; | |
163 | break; | |
164 | case 0x2013 ... 0x203e: | |
165 | cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013]; | |
166 | break; | |
167 | case 0x2103: | |
168 | cp = "\x22\x6a"; | |
169 | break; | |
170 | case 0x2105: | |
171 | cp = "\x22\x22"; | |
172 | break; | |
173 | case 0x2109: | |
174 | cp = "\x22\x6b"; | |
175 | break; | |
9b26f5c4 | 176 | case 0x2160 ... 0x2169: |
2b474353 UD |
177 | buf[0] = '\x24'; |
178 | buf[1] = '\x2b' + (ch - 0x2160); | |
8619129f UD |
179 | break; |
180 | case 0x2170 ... 0x2179: | |
2b474353 UD |
181 | buf[0] = '\x26'; |
182 | buf[1] = '\x35' + (ch - 0x2170); | |
8619129f UD |
183 | break; |
184 | case 0x2190 ... 0x2199: | |
185 | cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190]; | |
186 | break; | |
187 | case 0x2215 ... 0x2267: | |
188 | cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215]; | |
189 | break; | |
190 | case 0x22a5: | |
191 | cp = "\x22\x47"; | |
192 | break; | |
193 | case 0x22bf: | |
194 | cp = "\x22\x4a"; | |
195 | break; | |
196 | case 0x2400 ... 0x2421: | |
197 | cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400]; | |
198 | break; | |
199 | case 0x2460 ... 0x247d: | |
200 | cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460]; | |
201 | break; | |
202 | case 0x2500 ... 0x2642: | |
203 | cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500]; | |
9b26f5c4 | 204 | break; |
8619129f UD |
205 | case 0x3000 ... 0x3029: |
206 | cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000]; | |
207 | break; | |
208 | case 0x30fb: | |
209 | cp = "\x21\x26"; | |
210 | break; | |
211 | case 0x3105 ... 0x3129: | |
2b474353 | 212 | buf[0] = '\x25'; |
b79f74cd | 213 | buf[1] = '\x47' + (ch - 0x3105); |
8619129f UD |
214 | break; |
215 | case 0x32a3: | |
216 | cp = "\x22\x21"; | |
217 | break; | |
218 | case 0x338e ... 0x33d5: | |
219 | cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e]; | |
220 | break; | |
221 | case 0x4e00 ... 0x9f9c: | |
222 | cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00]; | |
b79f74cd UD |
223 | if (cp[0] != '\0') |
224 | break; | |
225 | /* FALLTHROUGH. Let's try the other planes. */ | |
289ac9dd | 226 | case 0x3400 ... 0x4dff: |
b79f74cd UD |
227 | case 0x9f9d ... 0x9fa5: |
228 | /* Let's try the other planes. */ | |
229 | needed = 3; | |
289ac9dd | 230 | cp = __cns11643_from_ucs4p0_tab[ch - 0x3400]; |
8619129f | 231 | break; |
93a568aa UD |
232 | case 0xfa28: |
233 | needed = 3; | |
234 | cp = "\x0f\x58\x4c"; | |
235 | break; | |
8619129f UD |
236 | case 0xfe30 ... 0xfe6b: |
237 | cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30]; | |
238 | break; | |
239 | case 0xff01 ... 0xff5d: | |
240 | cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01]; | |
241 | break; | |
242 | case 0xffe0: | |
243 | cp = "\x22\x66"; | |
244 | break; | |
245 | case 0xffe1: | |
246 | cp = "\x22\x67"; | |
247 | break; | |
248 | case 0xffe5: | |
249 | cp = "\x22\x64"; | |
250 | break; | |
289ac9dd UD |
251 | case 0x20000 ... 0x2a6d6: |
252 | needed = 3; | |
253 | cp = __cns11643_from_ucs4p2_tab[ch - 0x20000]; | |
254 | break; | |
93a568aa UD |
255 | case 0x2f800 ... 0x2fa1d: |
256 | needed = 3; | |
257 | cp = __cns11643_from_ucs4p2c_tab[ch - 0x2f800]; | |
258 | break; | |
8619129f | 259 | default: |
d64b6ad0 | 260 | return __UNKNOWN_10646_CHAR; |
2b474353 | 261 | } |
2b474353 UD |
262 | |
263 | if (cp[0] == '\0') | |
d64b6ad0 | 264 | return __UNKNOWN_10646_CHAR; |
2b474353 UD |
265 | |
266 | if (avail < needed) | |
267 | return 0; | |
268 | ||
269 | s[0] = cp[0]; | |
270 | s[1] = cp[1]; | |
271 | if (needed == 3) | |
272 | s[2] = cp[2]; | |
273 | ||
274 | return needed; | |
275 | } |