Commit | Line | Data |
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3263d5a2 | 1 | /* Basic character set support. |
acaf905b | 2 | Copyright (C) 2001-2012 Free Software Foundation, Inc. |
7976eda0 | 3 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
5df4f04c | 4 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
ce03bf76 KH |
5 | National Institute of Advanced Industrial Science and Technology (AIST) |
6 | Registration Number H14PRO021 | |
4ed46869 | 7 | |
327719ee | 8 | Copyright (C) 2003, 2004 |
3263d5a2 KH |
9 | National Institute of Advanced Industrial Science and Technology (AIST) |
10 | Registration Number H13PRO009 | |
4ed46869 | 11 | |
369314dc KH |
12 | This file is part of GNU Emacs. |
13 | ||
9ec0b715 | 14 | GNU Emacs is free software: you can redistribute it and/or modify |
369314dc | 15 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
16 | the Free Software Foundation, either version 3 of the License, or |
17 | (at your option) any later version. | |
4ed46869 | 18 | |
369314dc KH |
19 | GNU Emacs is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
4ed46869 | 23 | |
369314dc | 24 | You should have received a copy of the GNU General Public License |
9ec0b715 | 25 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ed46869 | 26 | |
68c45bf0 | 27 | #include <config.h> |
68c45bf0 | 28 | |
4ed46869 | 29 | #include <stdio.h> |
3263d5a2 KH |
30 | #include <unistd.h> |
31 | #include <ctype.h> | |
726929c4 | 32 | #include <limits.h> |
4ed46869 | 33 | #include <sys/types.h> |
d7306fe6 | 34 | #include <setjmp.h> |
4ed46869 | 35 | #include "lisp.h" |
3263d5a2 | 36 | #include "character.h" |
4ed46869 KH |
37 | #include "charset.h" |
38 | #include "coding.h" | |
fc6b09bf | 39 | #include "disptab.h" |
3263d5a2 | 40 | #include "buffer.h" |
4ed46869 | 41 | |
04c2f2c5 | 42 | /*** GENERAL NOTES on CODED CHARACTER SETS (CHARSETS) *** |
4ed46869 | 43 | |
3263d5a2 | 44 | A coded character set ("charset" hereafter) is a meaningful |
04c2f2c5 | 45 | collection (i.e. language, culture, functionality, etc.) of |
3263d5a2 | 46 | characters. Emacs handles multiple charsets at once. In Emacs Lisp |
04c2f2c5 DL |
47 | code, a charset is represented by a symbol. In C code, a charset is |
48 | represented by its ID number or by a pointer to a struct charset. | |
4ed46869 | 49 | |
3263d5a2 KH |
50 | The actual information about each charset is stored in two places. |
51 | Lispy information is stored in the hash table Vcharset_hash_table as | |
52 | a vector (charset attributes). The other information is stored in | |
04c2f2c5 | 53 | charset_table as a struct charset. |
4ed46869 | 54 | |
3263d5a2 | 55 | */ |
4ed46869 | 56 | |
3263d5a2 KH |
57 | /* Hash table that contains attributes of each charset. Keys are |
58 | charset symbols, and values are vectors of charset attributes. */ | |
59 | Lisp_Object Vcharset_hash_table; | |
4ed46869 | 60 | |
3263d5a2 KH |
61 | /* Table of struct charset. */ |
62 | struct charset *charset_table; | |
4ed46869 | 63 | |
0065d054 | 64 | static ptrdiff_t charset_table_size; |
5af5dd92 | 65 | static int charset_table_used; |
4ed46869 | 66 | |
3263d5a2 | 67 | Lisp_Object Qcharsetp; |
4ed46869 | 68 | |
3263d5a2 KH |
69 | /* Special charset symbols. */ |
70 | Lisp_Object Qascii; | |
955cbe7b PE |
71 | static Lisp_Object Qeight_bit; |
72 | static Lisp_Object Qiso_8859_1; | |
73 | static Lisp_Object Qunicode; | |
74 | static Lisp_Object Qemacs; | |
4ed46869 | 75 | |
3263d5a2 KH |
76 | /* The corresponding charsets. */ |
77 | int charset_ascii; | |
2fe1edd1 | 78 | int charset_eight_bit; |
a2cb4e63 | 79 | static int charset_iso_8859_1; |
3263d5a2 | 80 | int charset_unicode; |
a2cb4e63 | 81 | static int charset_emacs; |
b0e3cf2b | 82 | |
7c7dceee KH |
83 | /* The other special charsets. */ |
84 | int charset_jisx0201_roman; | |
85 | int charset_jisx0208_1978; | |
86 | int charset_jisx0208; | |
d32320c4 | 87 | int charset_ksc5601; |
c1a08b4c | 88 | |
3263d5a2 | 89 | /* Value of charset attribute `charset-iso-plane'. */ |
955cbe7b | 90 | static Lisp_Object Qgl, Qgr; |
c1a08b4c | 91 | |
d1a04588 KH |
92 | /* Charset of unibyte characters. */ |
93 | int charset_unibyte; | |
4ed46869 | 94 | |
3263d5a2 KH |
95 | /* List of charsets ordered by the priority. */ |
96 | Lisp_Object Vcharset_ordered_list; | |
4ed46869 | 97 | |
6a9c90ec KH |
98 | /* Sub-list of Vcharset_ordered_list that contains all non-preferred |
99 | charsets. */ | |
100 | Lisp_Object Vcharset_non_preferred_head; | |
101 | ||
dbbb237d | 102 | /* Incremented everytime we change Vcharset_ordered_list. This is |
64165ae2 | 103 | unsigned short so that it fits in Lisp_Int and never matches |
dbbb237d KH |
104 | -1. */ |
105 | unsigned short charset_ordered_list_tick; | |
4ed46869 | 106 | |
3263d5a2 KH |
107 | /* List of iso-2022 charsets. */ |
108 | Lisp_Object Viso_2022_charset_list; | |
35e623fb | 109 | |
3263d5a2 KH |
110 | /* List of emacs-mule charsets. */ |
111 | Lisp_Object Vemacs_mule_charset_list; | |
112 | ||
b84ae584 | 113 | int emacs_mule_charset[256]; |
4ed46869 KH |
114 | |
115 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
116 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
3263d5a2 KH |
117 | int iso_charset_table[ISO_MAX_DIMENSION][ISO_MAX_CHARS][ISO_MAX_FINAL]; |
118 | ||
69f8de5b KH |
119 | #define CODE_POINT_TO_INDEX(charset, code) \ |
120 | ((charset)->code_linear_p \ | |
3c7649c1 | 121 | ? (int) ((code) - (charset)->min_code) \ |
69f8de5b KH |
122 | : (((charset)->code_space_mask[(code) >> 24] & 0x8) \ |
123 | && ((charset)->code_space_mask[((code) >> 16) & 0xFF] & 0x4) \ | |
124 | && ((charset)->code_space_mask[((code) >> 8) & 0xFF] & 0x2) \ | |
125 | && ((charset)->code_space_mask[(code) & 0xFF] & 0x1)) \ | |
3c7649c1 PE |
126 | ? (int) (((((code) >> 24) - (charset)->code_space[12]) \ |
127 | * (charset)->code_space[11]) \ | |
128 | + (((((code) >> 16) & 0xFF) - (charset)->code_space[8]) \ | |
129 | * (charset)->code_space[7]) \ | |
130 | + (((((code) >> 8) & 0xFF) - (charset)->code_space[4]) \ | |
131 | * (charset)->code_space[3]) \ | |
132 | + (((code) & 0xFF) - (charset)->code_space[0]) \ | |
133 | - ((charset)->char_index_offset)) \ | |
3263d5a2 KH |
134 | : -1) |
135 | ||
136 | ||
3c7649c1 PE |
137 | /* Return the code-point for the character index IDX in CHARSET. |
138 | IDX should be an unsigned int variable in a valid range (which is | |
139 | always in nonnegative int range too). IDX contains garbage afterwards. */ | |
3263d5a2 | 140 | |
820ee249 KH |
141 | #define INDEX_TO_CODE_POINT(charset, idx) \ |
142 | ((charset)->code_linear_p \ | |
143 | ? (idx) + (charset)->min_code \ | |
144 | : (idx += (charset)->char_index_offset, \ | |
145 | (((charset)->code_space[0] + (idx) % (charset)->code_space[2]) \ | |
146 | | (((charset)->code_space[4] \ | |
147 | + ((idx) / (charset)->code_space[3] % (charset)->code_space[6])) \ | |
148 | << 8) \ | |
149 | | (((charset)->code_space[8] \ | |
150 | + ((idx) / (charset)->code_space[7] % (charset)->code_space[10])) \ | |
151 | << 16) \ | |
152 | | (((charset)->code_space[12] + ((idx) / (charset)->code_space[11])) \ | |
153 | << 24)))) | |
4cf9710d | 154 | |
ecca2aad KH |
155 | /* Structure to hold mapping tables for a charset. Used by temacs |
156 | invoked for dumping. */ | |
8a73a704 | 157 | |
ecca2aad KH |
158 | static struct |
159 | { | |
160 | /* The current charset for which the following tables are setup. */ | |
161 | struct charset *current; | |
162 | ||
163 | /* 1 iff the following table is used for encoder. */ | |
164 | short for_encoder; | |
165 | ||
0b381c7e JB |
166 | /* When the following table is used for encoding, minimum and |
167 | maximum character of the current charset. */ | |
ecca2aad KH |
168 | int min_char, max_char; |
169 | ||
e4769531 | 170 | /* A Unicode character corresponding to the code index 0 (i.e. the |
ecca2aad | 171 | minimum code-point) of the current charset, or -1 if the code |
e4769531 | 172 | index 0 is not a Unicode character. This is checked when |
ecca2aad KH |
173 | table.encoder[CHAR] is zero. */ |
174 | int zero_index_char; | |
175 | ||
176 | union { | |
177 | /* Table mapping code-indices (not code-points) of the current | |
178 | charset to Unicode characters. If decoder[CHAR] is -1, CHAR | |
179 | doesn't belong to the current charset. */ | |
180 | int decoder[0x10000]; | |
181 | /* Table mapping Unicode characters to code-indices of the current | |
182 | charset. The first 0x10000 elements are for BMP (0..0xFFFF), | |
183 | and the last 0x10000 are for SMP (0x10000..0x1FFFF) or SIP | |
184 | (0x20000..0x2FFFF). Note that there is no charset map that | |
185 | uses both SMP and SIP. */ | |
186 | unsigned short encoder[0x20000]; | |
187 | } table; | |
188 | } *temp_charset_work; | |
189 | ||
190 | #define SET_TEMP_CHARSET_WORK_ENCODER(C, CODE) \ | |
191 | do { \ | |
192 | if ((CODE) == 0) \ | |
193 | temp_charset_work->zero_index_char = (C); \ | |
194 | else if ((C) < 0x20000) \ | |
195 | temp_charset_work->table.encoder[(C)] = (CODE); \ | |
196 | else \ | |
197 | temp_charset_work->table.encoder[(C) - 0x10000] = (CODE); \ | |
198 | } while (0) | |
199 | ||
200 | #define GET_TEMP_CHARSET_WORK_ENCODER(C) \ | |
201 | ((C) == temp_charset_work->zero_index_char ? 0 \ | |
202 | : (C) < 0x20000 ? (temp_charset_work->table.encoder[(C)] \ | |
203 | ? (int) temp_charset_work->table.encoder[(C)] : -1) \ | |
204 | : temp_charset_work->table.encoder[(C) - 0x10000] \ | |
205 | ? temp_charset_work->table.encoder[(C) - 0x10000] : -1) | |
206 | ||
207 | #define SET_TEMP_CHARSET_WORK_DECODER(C, CODE) \ | |
208 | (temp_charset_work->table.decoder[(CODE)] = (C)) | |
209 | ||
210 | #define GET_TEMP_CHARSET_WORK_DECODER(CODE) \ | |
211 | (temp_charset_work->table.decoder[(CODE)]) | |
046b1f03 | 212 | \f |
93bcb785 | 213 | |
e9ce014c KH |
214 | /* Set to 1 to warn that a charset map is loaded and thus a buffer |
215 | text and a string data may be relocated. */ | |
3263d5a2 | 216 | int charset_map_loaded; |
4ed46869 | 217 | |
e9ce014c | 218 | struct charset_map_entries |
4ed46869 | 219 | { |
e9ce014c KH |
220 | struct { |
221 | unsigned from, to; | |
222 | int c; | |
223 | } entry[0x10000]; | |
224 | struct charset_map_entries *next; | |
225 | }; | |
226 | ||
ecca2aad KH |
227 | /* Load the mapping information of CHARSET from ENTRIES for |
228 | initializing (CONTROL_FLAG == 0), decoding (CONTROL_FLAG == 1), and | |
229 | encoding (CONTROL_FLAG == 2). | |
230 | ||
231 | If CONTROL_FLAG is 0, setup CHARSET->min_char, CHARSET->max_char, | |
232 | and CHARSET->fast_map. | |
233 | ||
234 | If CONTROL_FLAG is 1, setup the following tables according to | |
235 | CHARSET->method and inhibit_load_charset_map. | |
4cf9710d | 236 | |
ecca2aad KH |
237 | CHARSET->method | inhibit_lcm == 0 | inhibit_lcm == 1 |
238 | ----------------------+--------------------+--------------------------- | |
239 | CHARSET_METHOD_MAP | CHARSET->decoder | temp_charset_work->decoder | |
240 | ----------------------+--------------------+--------------------------- | |
241 | CHARSET_METHOD_OFFSET | Vchar_unify_table | temp_charset_work->decoder | |
8a73a704 | 242 | |
ecca2aad | 243 | If CONTROL_FLAG is 2, setup the following tables. |
93bcb785 | 244 | |
ecca2aad KH |
245 | CHARSET->method | inhibit_lcm == 0 | inhibit_lcm == 1 |
246 | ----------------------+--------------------+--------------------------- | |
247 | CHARSET_METHOD_MAP | CHARSET->encoder | temp_charset_work->encoder | |
248 | ----------------------+--------------------+-------------------------- | |
249 | CHARSET_METHOD_OFFSET | CHARSET->deunifier | temp_charset_work->encoder | |
250 | */ | |
4ed46869 | 251 | |
3263d5a2 | 252 | static void |
971de7fb | 253 | load_charset_map (struct charset *charset, struct charset_map_entries *entries, int n_entries, int control_flag) |
4ed46869 | 254 | { |
89ef49df | 255 | Lisp_Object vec IF_LINT (= Qnil), table IF_LINT (= Qnil); |
3263d5a2 KH |
256 | unsigned max_code = CHARSET_MAX_CODE (charset); |
257 | int ascii_compatible_p = charset->ascii_compatible_p; | |
258 | int min_char, max_char, nonascii_min_char; | |
3263d5a2 | 259 | int i; |
3263d5a2 | 260 | unsigned char *fast_map = charset->fast_map; |
99529c2c | 261 | |
e9ce014c KH |
262 | if (n_entries <= 0) |
263 | return; | |
264 | ||
ecca2aad | 265 | if (control_flag) |
8ac5a9cc | 266 | { |
ecca2aad KH |
267 | if (! inhibit_load_charset_map) |
268 | { | |
269 | if (control_flag == 1) | |
270 | { | |
271 | if (charset->method == CHARSET_METHOD_MAP) | |
272 | { | |
273 | int n = CODE_POINT_TO_INDEX (charset, max_code) + 1; | |
6662e69b | 274 | |
ecca2aad KH |
275 | vec = CHARSET_DECODER (charset) |
276 | = Fmake_vector (make_number (n), make_number (-1)); | |
277 | } | |
278 | else | |
279 | { | |
280 | char_table_set_range (Vchar_unify_table, | |
281 | charset->min_char, charset->max_char, | |
282 | Qnil); | |
283 | } | |
284 | } | |
285 | else | |
286 | { | |
287 | table = Fmake_char_table (Qnil, Qnil); | |
288 | if (charset->method == CHARSET_METHOD_MAP) | |
289 | CHARSET_ENCODER (charset) = table; | |
290 | else | |
291 | CHARSET_DEUNIFIER (charset) = table; | |
292 | } | |
293 | } | |
294 | else | |
295 | { | |
296 | if (! temp_charset_work) | |
546961a9 | 297 | temp_charset_work = xmalloc (sizeof (*temp_charset_work)); |
ecca2aad KH |
298 | if (control_flag == 1) |
299 | { | |
300 | memset (temp_charset_work->table.decoder, -1, | |
301 | sizeof (int) * 0x10000); | |
ecca2aad KH |
302 | } |
303 | else | |
304 | { | |
305 | memset (temp_charset_work->table.encoder, 0, | |
306 | sizeof (unsigned short) * 0x20000); | |
307 | temp_charset_work->zero_index_char = -1; | |
308 | } | |
309 | temp_charset_work->current = charset; | |
310 | temp_charset_work->for_encoder = (control_flag == 2); | |
311 | control_flag += 2; | |
312 | } | |
3263d5a2 | 313 | charset_map_loaded = 1; |
2e344af3 | 314 | } |
6662e69b | 315 | |
e9ce014c | 316 | min_char = max_char = entries->entry[0].c; |
3263d5a2 | 317 | nonascii_min_char = MAX_CHAR; |
e9ce014c | 318 | for (i = 0; i < n_entries; i++) |
2e344af3 | 319 | { |
e9ce014c | 320 | unsigned from, to; |
3befa583 | 321 | int from_index, to_index, lim_index; |
3b4f4446 | 322 | int from_c, to_c; |
e9ce014c | 323 | int idx = i % 0x10000; |
3263d5a2 | 324 | |
e9ce014c KH |
325 | if (i > 0 && idx == 0) |
326 | entries = entries->next; | |
327 | from = entries->entry[idx].from; | |
328 | to = entries->entry[idx].to; | |
3b4f4446 KH |
329 | from_c = entries->entry[idx].c; |
330 | from_index = CODE_POINT_TO_INDEX (charset, from); | |
331 | if (from == to) | |
6662e69b | 332 | { |
3b4f4446 KH |
333 | to_index = from_index; |
334 | to_c = from_c; | |
6662e69b | 335 | } |
3b4f4446 | 336 | else |
6662e69b | 337 | { |
3b4f4446 KH |
338 | to_index = CODE_POINT_TO_INDEX (charset, to); |
339 | to_c = from_c + (to_index - from_index); | |
6662e69b | 340 | } |
3b4f4446 KH |
341 | if (from_index < 0 || to_index < 0) |
342 | continue; | |
3befa583 | 343 | lim_index = to_index + 1; |
3263d5a2 | 344 | |
ecca2aad KH |
345 | if (to_c > max_char) |
346 | max_char = to_c; | |
347 | else if (from_c < min_char) | |
348 | min_char = from_c; | |
6662e69b | 349 | |
ecca2aad KH |
350 | if (control_flag == 1) |
351 | { | |
352 | if (charset->method == CHARSET_METHOD_MAP) | |
3befa583 | 353 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
354 | ASET (vec, from_index, make_number (from_c)); |
355 | else | |
3befa583 | 356 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
357 | CHAR_TABLE_SET (Vchar_unify_table, |
358 | CHARSET_CODE_OFFSET (charset) + from_index, | |
359 | make_number (from_c)); | |
360 | } | |
361 | else if (control_flag == 2) | |
362 | { | |
363 | if (charset->method == CHARSET_METHOD_MAP | |
364 | && CHARSET_COMPACT_CODES_P (charset)) | |
3befa583 | 365 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad | 366 | { |
3c7649c1 PE |
367 | unsigned code = from_index; |
368 | code = INDEX_TO_CODE_POINT (charset, code); | |
ecca2aad KH |
369 | |
370 | if (NILP (CHAR_TABLE_REF (table, from_c))) | |
371 | CHAR_TABLE_SET (table, from_c, make_number (code)); | |
372 | } | |
373 | else | |
3befa583 | 374 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
375 | { |
376 | if (NILP (CHAR_TABLE_REF (table, from_c))) | |
377 | CHAR_TABLE_SET (table, from_c, make_number (from_index)); | |
378 | } | |
379 | } | |
380 | else if (control_flag == 3) | |
3befa583 | 381 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
382 | SET_TEMP_CHARSET_WORK_DECODER (from_c, from_index); |
383 | else if (control_flag == 4) | |
3befa583 | 384 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
385 | SET_TEMP_CHARSET_WORK_ENCODER (from_c, from_index); |
386 | else /* control_flag == 0 */ | |
387 | { | |
3b4f4446 KH |
388 | if (ascii_compatible_p) |
389 | { | |
390 | if (! ASCII_BYTE_P (from_c)) | |
391 | { | |
392 | if (from_c < nonascii_min_char) | |
393 | nonascii_min_char = from_c; | |
394 | } | |
395 | else if (! ASCII_BYTE_P (to_c)) | |
396 | { | |
397 | nonascii_min_char = 0x80; | |
398 | } | |
399 | } | |
177c0ea7 | 400 | |
ecca2aad KH |
401 | for (; from_c <= to_c; from_c++) |
402 | CHARSET_FAST_MAP_SET (from_c, fast_map); | |
2e344af3 | 403 | } |
8ac5a9cc | 404 | } |
3263d5a2 | 405 | |
ecca2aad | 406 | if (control_flag == 0) |
4ed46869 | 407 | { |
3263d5a2 KH |
408 | CHARSET_MIN_CHAR (charset) = (ascii_compatible_p |
409 | ? nonascii_min_char : min_char); | |
410 | CHARSET_MAX_CHAR (charset) = max_char; | |
4ed46869 | 411 | } |
ecca2aad KH |
412 | else if (control_flag == 4) |
413 | { | |
414 | temp_charset_work->min_char = min_char; | |
415 | temp_charset_work->max_char = max_char; | |
416 | } | |
4ed46869 KH |
417 | } |
418 | ||
12bcae05 | 419 | |
3263d5a2 | 420 | /* Read a hexadecimal number (preceded by "0x") from the file FP while |
3b59c351 | 421 | paying attention to comment character '#'. */ |
12bcae05 | 422 | |
55d4c1b2 | 423 | static inline unsigned |
caeeedc1 | 424 | read_hex (FILE *fp, int *eof, int *overflow) |
12bcae05 | 425 | { |
3263d5a2 KH |
426 | int c; |
427 | unsigned n; | |
12bcae05 | 428 | |
3263d5a2 KH |
429 | while ((c = getc (fp)) != EOF) |
430 | { | |
69f8de5b | 431 | if (c == '#') |
3263d5a2 KH |
432 | { |
433 | while ((c = getc (fp)) != EOF && c != '\n'); | |
434 | } | |
435 | else if (c == '0') | |
436 | { | |
437 | if ((c = getc (fp)) == EOF || c == 'x') | |
438 | break; | |
439 | } | |
8f924df7 | 440 | } |
3263d5a2 KH |
441 | if (c == EOF) |
442 | { | |
443 | *eof = 1; | |
444 | return 0; | |
445 | } | |
3263d5a2 | 446 | n = 0; |
caeeedc1 PE |
447 | while (isxdigit (c = getc (fp))) |
448 | { | |
449 | if (UINT_MAX >> 4 < n) | |
450 | *overflow = 1; | |
3263d5a2 | 451 | n = ((n << 4) |
caeeedc1 PE |
452 | | (c - ('0' <= c && c <= '9' ? '0' |
453 | : 'A' <= c && c <= 'F' ? 'A' - 10 | |
454 | : 'a' - 10))); | |
455 | } | |
e9ce014c KH |
456 | if (c != EOF) |
457 | ungetc (c, fp); | |
3263d5a2 KH |
458 | return n; |
459 | } | |
12bcae05 | 460 | |
3263d5a2 | 461 | /* Return a mapping vector for CHARSET loaded from MAPFILE. |
e9ce014c KH |
462 | Each line of MAPFILE has this form |
463 | 0xAAAA 0xCCCC | |
464 | where 0xAAAA is a code-point and 0xCCCC is the corresponding | |
465 | character code, or this form | |
466 | 0xAAAA-0xBBBB 0xCCCC | |
467 | where 0xAAAA and 0xBBBB are code-points specifying a range, and | |
468 | 0xCCCC is the first character code of the range. | |
4ed46869 | 469 | |
3263d5a2 KH |
470 | The returned vector has this form: |
471 | [ CODE1 CHAR1 CODE2 CHAR2 .... ] | |
e9ce014c | 472 | where CODE1 is a code-point or a cons of code-points specifying a |
dde2559c KH |
473 | range. |
474 | ||
18a10a21 JB |
475 | Note that this function uses `openp' to open MAPFILE but ignores |
476 | `file-name-handler-alist' to avoid running any Lisp code. */ | |
4ed46869 | 477 | |
e9ce014c | 478 | static void |
971de7fb | 479 | load_charset_map_from_file (struct charset *charset, Lisp_Object mapfile, int control_flag) |
4ed46869 | 480 | { |
e9ce014c KH |
481 | unsigned min_code = CHARSET_MIN_CODE (charset); |
482 | unsigned max_code = CHARSET_MAX_CODE (charset); | |
3263d5a2 KH |
483 | int fd; |
484 | FILE *fp; | |
3263d5a2 | 485 | Lisp_Object suffixes; |
e9ce014c | 486 | struct charset_map_entries *head, *entries; |
d311d28c PE |
487 | int n_entries; |
488 | ptrdiff_t count; | |
a2f3eb19 | 489 | USE_SAFE_ALLOCA; |
4ed46869 | 490 | |
3263d5a2 KH |
491 | suffixes = Fcons (build_string (".map"), |
492 | Fcons (build_string (".TXT"), Qnil)); | |
4ed46869 | 493 | |
a2f3eb19 | 494 | count = SPECPDL_INDEX (); |
dde2559c | 495 | specbind (Qfile_name_handler_alist, Qnil); |
4beef065 | 496 | fd = openp (Vcharset_map_path, mapfile, suffixes, NULL, Qnil); |
dde2559c | 497 | unbind_to (count, Qnil); |
3263d5a2 KH |
498 | if (fd < 0 |
499 | || ! (fp = fdopen (fd, "r"))) | |
5fdb398c | 500 | error ("Failure in loading charset map: %s", SDATA (mapfile)); |
4ed46869 | 501 | |
a2f3eb19 CY |
502 | /* Use SAFE_ALLOCA instead of alloca, as `charset_map_entries' is |
503 | large (larger than MAX_ALLOCA). */ | |
504 | SAFE_ALLOCA (head, struct charset_map_entries *, | |
505 | sizeof (struct charset_map_entries)); | |
506 | entries = head; | |
72af86bd | 507 | memset (entries, 0, sizeof (struct charset_map_entries)); |
a2f3eb19 | 508 | |
e9ce014c | 509 | n_entries = 0; |
3263d5a2 KH |
510 | while (1) |
511 | { | |
caeeedc1 | 512 | unsigned from, to, c; |
e9ce014c | 513 | int idx; |
caeeedc1 | 514 | int eof = 0, overflow = 0; |
4ed46869 | 515 | |
caeeedc1 | 516 | from = read_hex (fp, &eof, &overflow); |
3263d5a2 KH |
517 | if (eof) |
518 | break; | |
e9ce014c | 519 | if (getc (fp) == '-') |
caeeedc1 | 520 | to = read_hex (fp, &eof, &overflow); |
e9ce014c KH |
521 | else |
522 | to = from; | |
caeeedc1 PE |
523 | if (eof) |
524 | break; | |
525 | c = read_hex (fp, &eof, &overflow); | |
526 | if (eof) | |
527 | break; | |
ac4137cc | 528 | |
caeeedc1 PE |
529 | if (overflow) |
530 | continue; | |
e9ce014c KH |
531 | if (from < min_code || to > max_code || from > to || c > MAX_CHAR) |
532 | continue; | |
ac4137cc | 533 | |
e9ce014c | 534 | if (n_entries > 0 && (n_entries % 0x10000) == 0) |
3263d5a2 | 535 | { |
a2f3eb19 CY |
536 | SAFE_ALLOCA (entries->next, struct charset_map_entries *, |
537 | sizeof (struct charset_map_entries)); | |
e9ce014c | 538 | entries = entries->next; |
72af86bd | 539 | memset (entries, 0, sizeof (struct charset_map_entries)); |
d311d28c | 540 | n_entries = 0; |
3263d5a2 | 541 | } |
d311d28c | 542 | idx = n_entries; |
e9ce014c KH |
543 | entries->entry[idx].from = from; |
544 | entries->entry[idx].to = to; | |
545 | entries->entry[idx].c = c; | |
546 | n_entries++; | |
3263d5a2 KH |
547 | } |
548 | fclose (fp); | |
177c0ea7 | 549 | |
e9ce014c | 550 | load_charset_map (charset, head, n_entries, control_flag); |
a2f3eb19 | 551 | SAFE_FREE (); |
4ed46869 KH |
552 | } |
553 | ||
e9ce014c | 554 | static void |
971de7fb | 555 | load_charset_map_from_vector (struct charset *charset, Lisp_Object vec, int control_flag) |
23d2a7f1 | 556 | { |
e9ce014c KH |
557 | unsigned min_code = CHARSET_MIN_CODE (charset); |
558 | unsigned max_code = CHARSET_MAX_CODE (charset); | |
559 | struct charset_map_entries *head, *entries; | |
560 | int n_entries; | |
561 | int len = ASIZE (vec); | |
562 | int i; | |
a2f3eb19 | 563 | USE_SAFE_ALLOCA; |
23d2a7f1 | 564 | |
e9ce014c | 565 | if (len % 2 == 1) |
3263d5a2 | 566 | { |
e9ce014c KH |
567 | add_to_log ("Failure in loading charset map: %V", vec, Qnil); |
568 | return; | |
3263d5a2 | 569 | } |
35e623fb | 570 | |
a2f3eb19 CY |
571 | /* Use SAFE_ALLOCA instead of alloca, as `charset_map_entries' is |
572 | large (larger than MAX_ALLOCA). */ | |
573 | SAFE_ALLOCA (head, struct charset_map_entries *, | |
574 | sizeof (struct charset_map_entries)); | |
575 | entries = head; | |
72af86bd | 576 | memset (entries, 0, sizeof (struct charset_map_entries)); |
a2f3eb19 | 577 | |
e9ce014c KH |
578 | n_entries = 0; |
579 | for (i = 0; i < len; i += 2) | |
35e623fb | 580 | { |
e9ce014c KH |
581 | Lisp_Object val, val2; |
582 | unsigned from, to; | |
d311d28c | 583 | EMACS_INT c; |
e9ce014c | 584 | int idx; |
d2665018 | 585 | |
e9ce014c KH |
586 | val = AREF (vec, i); |
587 | if (CONSP (val)) | |
bbf12bb3 | 588 | { |
e9ce014c KH |
589 | val2 = XCDR (val); |
590 | val = XCAR (val); | |
e9ce014c KH |
591 | from = XFASTINT (val); |
592 | to = XFASTINT (val2); | |
bbf12bb3 | 593 | } |
e9ce014c | 594 | else |
d311d28c | 595 | from = to = XFASTINT (val); |
e9ce014c KH |
596 | val = AREF (vec, i + 1); |
597 | CHECK_NATNUM (val); | |
598 | c = XFASTINT (val); | |
76d7b829 | 599 | |
e9ce014c KH |
600 | if (from < min_code || to > max_code || from > to || c > MAX_CHAR) |
601 | continue; | |
76d7b829 | 602 | |
dcc694d7 | 603 | if (n_entries > 0 && (n_entries % 0x10000) == 0) |
e9ce014c | 604 | { |
a2f3eb19 CY |
605 | SAFE_ALLOCA (entries->next, struct charset_map_entries *, |
606 | sizeof (struct charset_map_entries)); | |
e9ce014c | 607 | entries = entries->next; |
72af86bd | 608 | memset (entries, 0, sizeof (struct charset_map_entries)); |
e9ce014c KH |
609 | } |
610 | idx = n_entries % 0x10000; | |
611 | entries->entry[idx].from = from; | |
612 | entries->entry[idx].to = to; | |
613 | entries->entry[idx].c = c; | |
614 | n_entries++; | |
615 | } | |
76d7b829 | 616 | |
e9ce014c | 617 | load_charset_map (charset, head, n_entries, control_flag); |
a2f3eb19 | 618 | SAFE_FREE (); |
ac4137cc KH |
619 | } |
620 | ||
ecca2aad KH |
621 | |
622 | /* Load a mapping table for CHARSET. CONTROL-FLAG tells what kind of | |
623 | map it is (see the comment of load_charset_map for the detail). */ | |
624 | ||
3263d5a2 | 625 | static void |
971de7fb | 626 | load_charset (struct charset *charset, int control_flag) |
76d7b829 | 627 | { |
ecca2aad | 628 | Lisp_Object map; |
76d7b829 | 629 | |
ecca2aad KH |
630 | if (inhibit_load_charset_map |
631 | && temp_charset_work | |
632 | && charset == temp_charset_work->current | |
56f00ed2 | 633 | && ((control_flag == 2) == temp_charset_work->for_encoder)) |
ecca2aad KH |
634 | return; |
635 | ||
636 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) | |
637 | map = CHARSET_MAP (charset); | |
0ac2c299 PE |
638 | else |
639 | { | |
640 | if (! CHARSET_UNIFIED_P (charset)) | |
641 | abort (); | |
642 | map = CHARSET_UNIFY_MAP (charset); | |
643 | } | |
ecca2aad KH |
644 | if (STRINGP (map)) |
645 | load_charset_map_from_file (charset, map, control_flag); | |
646 | else | |
647 | load_charset_map_from_vector (charset, map, control_flag); | |
4ed46869 | 648 | } |
76d7b829 | 649 | |
3263d5a2 KH |
650 | |
651 | DEFUN ("charsetp", Fcharsetp, Scharsetp, 1, 1, 0, | |
652 | doc: /* Return non-nil if and only if OBJECT is a charset.*/) | |
5842a27b | 653 | (Lisp_Object object) |
23d2a7f1 | 654 | { |
3263d5a2 | 655 | return (CHARSETP (object) ? Qt : Qnil); |
76d7b829 KH |
656 | } |
657 | ||
4ed46869 | 658 | |
a2cb4e63 PE |
659 | static void |
660 | map_charset_for_dump (void (*c_function) (Lisp_Object, Lisp_Object), | |
661 | Lisp_Object function, Lisp_Object arg, | |
662 | unsigned int from, unsigned int to) | |
ecca2aad KH |
663 | { |
664 | int from_idx = CODE_POINT_TO_INDEX (temp_charset_work->current, from); | |
665 | int to_idx = CODE_POINT_TO_INDEX (temp_charset_work->current, to); | |
666 | Lisp_Object range; | |
667 | int c, stop; | |
668 | struct gcpro gcpro1; | |
669 | ||
670 | range = Fcons (Qnil, Qnil); | |
671 | GCPRO1 (range); | |
672 | ||
673 | c = temp_charset_work->min_char; | |
674 | stop = (temp_charset_work->max_char < 0x20000 | |
675 | ? temp_charset_work->max_char : 0xFFFF); | |
51b59d79 | 676 | |
ecca2aad KH |
677 | while (1) |
678 | { | |
f6095868 | 679 | int idx = GET_TEMP_CHARSET_WORK_ENCODER (c); |
ecca2aad | 680 | |
f6095868 | 681 | if (idx >= from_idx && idx <= to_idx) |
ecca2aad KH |
682 | { |
683 | if (NILP (XCAR (range))) | |
684 | XSETCAR (range, make_number (c)); | |
685 | } | |
686 | else if (! NILP (XCAR (range))) | |
687 | { | |
688 | XSETCDR (range, make_number (c - 1)); | |
689 | if (c_function) | |
690 | (*c_function) (arg, range); | |
691 | else | |
692 | call2 (function, range, arg); | |
693 | XSETCAR (range, Qnil); | |
694 | } | |
695 | if (c == stop) | |
696 | { | |
697 | if (c == temp_charset_work->max_char) | |
698 | { | |
699 | if (! NILP (XCAR (range))) | |
700 | { | |
701 | XSETCDR (range, make_number (c)); | |
702 | if (c_function) | |
703 | (*c_function) (arg, range); | |
704 | else | |
705 | call2 (function, range, arg); | |
706 | } | |
707 | break; | |
708 | } | |
709 | c = 0x1FFFF; | |
710 | stop = temp_charset_work->max_char; | |
711 | } | |
712 | c++; | |
713 | } | |
c542407d | 714 | UNGCPRO; |
ecca2aad KH |
715 | } |
716 | ||
4ed46869 | 717 | void |
6f704c76 DN |
718 | map_charset_chars (void (*c_function)(Lisp_Object, Lisp_Object), Lisp_Object function, |
719 | Lisp_Object arg, struct charset *charset, unsigned from, unsigned to) | |
4ed46869 | 720 | { |
3263d5a2 | 721 | Lisp_Object range; |
374c5cfd | 722 | int partial; |
3263d5a2 | 723 | |
374c5cfd KH |
724 | partial = (from > CHARSET_MIN_CODE (charset) |
725 | || to < CHARSET_MAX_CODE (charset)); | |
726 | ||
3263d5a2 | 727 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_OFFSET) |
4ed46869 | 728 | { |
374c5cfd KH |
729 | int from_idx = CODE_POINT_TO_INDEX (charset, from); |
730 | int to_idx = CODE_POINT_TO_INDEX (charset, to); | |
731 | int from_c = from_idx + CHARSET_CODE_OFFSET (charset); | |
732 | int to_c = to_idx + CHARSET_CODE_OFFSET (charset); | |
733 | ||
ecca2aad KH |
734 | if (CHARSET_UNIFIED_P (charset)) |
735 | { | |
736 | if (! CHAR_TABLE_P (CHARSET_DEUNIFIER (charset))) | |
737 | load_charset (charset, 2); | |
738 | if (CHAR_TABLE_P (CHARSET_DEUNIFIER (charset))) | |
739 | map_char_table_for_charset (c_function, function, | |
740 | CHARSET_DEUNIFIER (charset), arg, | |
741 | partial ? charset : NULL, from, to); | |
742 | else | |
743 | map_charset_for_dump (c_function, function, arg, from, to); | |
744 | } | |
745 | ||
374c5cfd | 746 | range = Fcons (make_number (from_c), make_number (to_c)); |
3263d5a2 | 747 | if (NILP (function)) |
5af5dd92 | 748 | (*c_function) (arg, range); |
3263d5a2 KH |
749 | else |
750 | call2 (function, range, arg); | |
c83ef371 | 751 | } |
3263d5a2 KH |
752 | else if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) |
753 | { | |
754 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
ecca2aad KH |
755 | load_charset (charset, 2); |
756 | if (CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
757 | map_char_table_for_charset (c_function, function, | |
758 | CHARSET_ENCODER (charset), arg, | |
759 | partial ? charset : NULL, from, to); | |
760 | else | |
761 | map_charset_for_dump (c_function, function, arg, from, to); | |
3263d5a2 | 762 | } |
374c5cfd | 763 | else if (CHARSET_METHOD (charset) == CHARSET_METHOD_SUBSET) |
4ed46869 | 764 | { |
374c5cfd KH |
765 | Lisp_Object subset_info; |
766 | int offset; | |
767 | ||
768 | subset_info = CHARSET_SUBSET (charset); | |
769 | charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
770 | offset = XINT (AREF (subset_info, 3)); | |
771 | from -= offset; | |
772 | if (from < XFASTINT (AREF (subset_info, 1))) | |
773 | from = XFASTINT (AREF (subset_info, 1)); | |
774 | to -= offset; | |
775 | if (to > XFASTINT (AREF (subset_info, 2))) | |
776 | to = XFASTINT (AREF (subset_info, 2)); | |
777 | map_charset_chars (c_function, function, arg, charset, from, to); | |
4ed46869 | 778 | } |
374c5cfd KH |
779 | else /* i.e. CHARSET_METHOD_SUPERSET */ |
780 | { | |
781 | Lisp_Object parents; | |
4ed46869 | 782 | |
374c5cfd KH |
783 | for (parents = CHARSET_SUPERSET (charset); CONSP (parents); |
784 | parents = XCDR (parents)) | |
bbf12bb3 | 785 | { |
374c5cfd KH |
786 | int offset; |
787 | unsigned this_from, this_to; | |
788 | ||
789 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (XCAR (parents)))); | |
790 | offset = XINT (XCDR (XCAR (parents))); | |
12b55765 KH |
791 | this_from = from > offset ? from - offset : 0; |
792 | this_to = to > offset ? to - offset : 0; | |
374c5cfd KH |
793 | if (this_from < CHARSET_MIN_CODE (charset)) |
794 | this_from = CHARSET_MIN_CODE (charset); | |
795 | if (this_to > CHARSET_MAX_CODE (charset)) | |
796 | this_to = CHARSET_MAX_CODE (charset); | |
111daccf KH |
797 | map_charset_chars (c_function, function, arg, charset, |
798 | this_from, this_to); | |
bbf12bb3 | 799 | } |
35e623fb | 800 | } |
4ed46869 KH |
801 | } |
802 | ||
374c5cfd | 803 | DEFUN ("map-charset-chars", Fmap_charset_chars, Smap_charset_chars, 2, 5, 0, |
04c2f2c5 | 804 | doc: /* Call FUNCTION for all characters in CHARSET. |
374c5cfd | 805 | FUNCTION is called with an argument RANGE and the optional 3rd |
3263d5a2 | 806 | argument ARG. |
4ed46869 | 807 | |
374c5cfd KH |
808 | RANGE is a cons (FROM . TO), where FROM and TO indicate a range of |
809 | characters contained in CHARSET. | |
4ed46869 | 810 | |
374c5cfd | 811 | The optional 4th and 5th arguments FROM-CODE and TO-CODE specify the |
72d51285 | 812 | range of code points (in CHARSET) of target characters. */) |
5842a27b | 813 | (Lisp_Object function, Lisp_Object charset, Lisp_Object arg, Lisp_Object from_code, Lisp_Object to_code) |
4ed46869 | 814 | { |
374c5cfd | 815 | struct charset *cs; |
16fed1fc | 816 | unsigned from, to; |
4ed46869 | 817 | |
374c5cfd KH |
818 | CHECK_CHARSET_GET_CHARSET (charset, cs); |
819 | if (NILP (from_code)) | |
16fed1fc | 820 | from = CHARSET_MIN_CODE (cs); |
970b7474 | 821 | else |
4ed46869 | 822 | { |
970b7474 KH |
823 | from = XINT (from_code); |
824 | if (from < CHARSET_MIN_CODE (cs)) | |
825 | from = CHARSET_MIN_CODE (cs); | |
4ed46869 | 826 | } |
374c5cfd | 827 | if (NILP (to_code)) |
970b7474 | 828 | to = CHARSET_MAX_CODE (cs); |
4ed46869 KH |
829 | else |
830 | { | |
970b7474 KH |
831 | to = XINT (to_code); |
832 | if (to > CHARSET_MAX_CODE (cs)) | |
833 | to = CHARSET_MAX_CODE (cs); | |
4ed46869 | 834 | } |
16fed1fc | 835 | map_charset_chars (NULL, function, arg, cs, from, to); |
3263d5a2 | 836 | return Qnil; |
35e623fb | 837 | } |
4ed46869 | 838 | |
4ed46869 | 839 | |
3263d5a2 KH |
840 | /* Define a charset according to the arguments. The Nth argument is |
841 | the Nth attribute of the charset (the last attribute `charset-id' | |
842 | is not included). See the docstring of `define-charset' for the | |
843 | detail. */ | |
4ed46869 | 844 | |
3263d5a2 KH |
845 | DEFUN ("define-charset-internal", Fdefine_charset_internal, |
846 | Sdefine_charset_internal, charset_arg_max, MANY, 0, | |
04c2f2c5 DL |
847 | doc: /* For internal use only. |
848 | usage: (define-charset-internal ...) */) | |
f66c7cf8 | 849 | (ptrdiff_t nargs, Lisp_Object *args) |
4ed46869 | 850 | { |
3263d5a2 KH |
851 | /* Charset attr vector. */ |
852 | Lisp_Object attrs; | |
853 | Lisp_Object val; | |
0de4bb68 | 854 | EMACS_UINT hash_code; |
3263d5a2 | 855 | struct Lisp_Hash_Table *hash_table = XHASH_TABLE (Vcharset_hash_table); |
69f8de5b | 856 | int i, j; |
3263d5a2 KH |
857 | struct charset charset; |
858 | int id; | |
859 | int dimension; | |
860 | int new_definition_p; | |
861 | int nchars; | |
862 | ||
863 | if (nargs != charset_arg_max) | |
864 | return Fsignal (Qwrong_number_of_arguments, | |
865 | Fcons (intern ("define-charset-internal"), | |
866 | make_number (nargs))); | |
867 | ||
868 | attrs = Fmake_vector (make_number (charset_attr_max), Qnil); | |
869 | ||
870 | CHECK_SYMBOL (args[charset_arg_name]); | |
871 | ASET (attrs, charset_name, args[charset_arg_name]); | |
872 | ||
873 | val = args[charset_arg_code_space]; | |
c032b5f8 | 874 | for (i = 0, dimension = 0, nchars = 1; ; i++) |
76d7b829 | 875 | { |
d311d28c | 876 | Lisp_Object min_byte_obj, max_byte_obj; |
3263d5a2 KH |
877 | int min_byte, max_byte; |
878 | ||
d311d28c PE |
879 | min_byte_obj = Faref (val, make_number (i * 2)); |
880 | max_byte_obj = Faref (val, make_number (i * 2 + 1)); | |
881 | CHECK_RANGED_INTEGER (0, min_byte_obj, 255); | |
882 | min_byte = XINT (min_byte_obj); | |
883 | CHECK_RANGED_INTEGER (min_byte, max_byte_obj, 255); | |
884 | max_byte = XINT (max_byte_obj); | |
3263d5a2 KH |
885 | charset.code_space[i * 4] = min_byte; |
886 | charset.code_space[i * 4 + 1] = max_byte; | |
887 | charset.code_space[i * 4 + 2] = max_byte - min_byte + 1; | |
3263d5a2 KH |
888 | if (max_byte > 0) |
889 | dimension = i + 1; | |
c032b5f8 PE |
890 | if (i == 3) |
891 | break; | |
892 | nchars *= charset.code_space[i * 4 + 2]; | |
893 | charset.code_space[i * 4 + 3] = nchars; | |
3263d5a2 | 894 | } |
4ed46869 | 895 | |
3263d5a2 KH |
896 | val = args[charset_arg_dimension]; |
897 | if (NILP (val)) | |
898 | charset.dimension = dimension; | |
899 | else | |
4ed46869 | 900 | { |
d311d28c | 901 | CHECK_RANGED_INTEGER (1, val, 4); |
3263d5a2 | 902 | charset.dimension = XINT (val); |
4ed46869 KH |
903 | } |
904 | ||
3263d5a2 KH |
905 | charset.code_linear_p |
906 | = (charset.dimension == 1 | |
907 | || (charset.code_space[2] == 256 | |
908 | && (charset.dimension == 2 | |
909 | || (charset.code_space[6] == 256 | |
910 | && (charset.dimension == 3 | |
911 | || charset.code_space[10] == 256))))); | |
912 | ||
69f8de5b | 913 | if (! charset.code_linear_p) |
4ed46869 | 914 | { |
69f8de5b | 915 | charset.code_space_mask = (unsigned char *) xmalloc (256); |
72af86bd | 916 | memset (charset.code_space_mask, 0, 256); |
69f8de5b KH |
917 | for (i = 0; i < 4; i++) |
918 | for (j = charset.code_space[i * 4]; j <= charset.code_space[i * 4 + 1]; | |
919 | j++) | |
920 | charset.code_space_mask[j] |= (1 << i); | |
4ed46869 KH |
921 | } |
922 | ||
3263d5a2 | 923 | charset.iso_chars_96 = charset.code_space[2] == 96; |
4ed46869 | 924 | |
3263d5a2 KH |
925 | charset.min_code = (charset.code_space[0] |
926 | | (charset.code_space[4] << 8) | |
927 | | (charset.code_space[8] << 16) | |
3c7649c1 | 928 | | ((unsigned) charset.code_space[12] << 24)); |
3263d5a2 KH |
929 | charset.max_code = (charset.code_space[1] |
930 | | (charset.code_space[5] << 8) | |
931 | | (charset.code_space[9] << 16) | |
3c7649c1 | 932 | | ((unsigned) charset.code_space[13] << 24)); |
820ee249 | 933 | charset.char_index_offset = 0; |
8a73a704 | 934 | |
820ee249 KH |
935 | val = args[charset_arg_min_code]; |
936 | if (! NILP (val)) | |
937 | { | |
be44ca6c | 938 | unsigned code = cons_to_unsigned (val, UINT_MAX); |
fdb82f93 | 939 | |
820ee249 KH |
940 | if (code < charset.min_code |
941 | || code > charset.max_code) | |
3c7649c1 PE |
942 | args_out_of_range_3 (make_fixnum_or_float (charset.min_code), |
943 | make_fixnum_or_float (charset.max_code), val); | |
820ee249 KH |
944 | charset.char_index_offset = CODE_POINT_TO_INDEX (&charset, code); |
945 | charset.min_code = code; | |
946 | } | |
3fac5a51 | 947 | |
820ee249 KH |
948 | val = args[charset_arg_max_code]; |
949 | if (! NILP (val)) | |
3fac5a51 | 950 | { |
be44ca6c | 951 | unsigned code = cons_to_unsigned (val, UINT_MAX); |
820ee249 | 952 | |
820ee249 KH |
953 | if (code < charset.min_code |
954 | || code > charset.max_code) | |
3c7649c1 PE |
955 | args_out_of_range_3 (make_fixnum_or_float (charset.min_code), |
956 | make_fixnum_or_float (charset.max_code), val); | |
820ee249 | 957 | charset.max_code = code; |
3fac5a51 | 958 | } |
3fac5a51 | 959 | |
ecca2aad | 960 | charset.compact_codes_p = charset.max_code < 0x10000; |
4ed46869 | 961 | |
3263d5a2 KH |
962 | val = args[charset_arg_invalid_code]; |
963 | if (NILP (val)) | |
964 | { | |
965 | if (charset.min_code > 0) | |
966 | charset.invalid_code = 0; | |
bbf12bb3 KH |
967 | else |
968 | { | |
3c7649c1 | 969 | if (charset.max_code < UINT_MAX) |
3263d5a2 KH |
970 | charset.invalid_code = charset.max_code + 1; |
971 | else | |
972 | error ("Attribute :invalid-code must be specified"); | |
76d7b829 | 973 | } |
76d7b829 | 974 | } |
3263d5a2 | 975 | else |
3c7649c1 | 976 | charset.invalid_code = cons_to_unsigned (val, UINT_MAX); |
4ed46869 | 977 | |
3263d5a2 KH |
978 | val = args[charset_arg_iso_final]; |
979 | if (NILP (val)) | |
980 | charset.iso_final = -1; | |
981 | else | |
982 | { | |
983 | CHECK_NUMBER (val); | |
984 | if (XINT (val) < '0' || XINT (val) > 127) | |
c2982e87 | 985 | error ("Invalid iso-final-char: %"pI"d", XINT (val)); |
3263d5a2 KH |
986 | charset.iso_final = XINT (val); |
987 | } | |
4ed46869 | 988 | |
3263d5a2 KH |
989 | val = args[charset_arg_iso_revision]; |
990 | if (NILP (val)) | |
991 | charset.iso_revision = -1; | |
992 | else | |
4ed46869 | 993 | { |
d311d28c | 994 | CHECK_RANGED_INTEGER (-1, val, 63); |
3263d5a2 | 995 | charset.iso_revision = XINT (val); |
4ed46869 | 996 | } |
4ed46869 | 997 | |
3263d5a2 KH |
998 | val = args[charset_arg_emacs_mule_id]; |
999 | if (NILP (val)) | |
1000 | charset.emacs_mule_id = -1; | |
4ed46869 KH |
1001 | else |
1002 | { | |
3263d5a2 KH |
1003 | CHECK_NATNUM (val); |
1004 | if ((XINT (val) > 0 && XINT (val) <= 128) || XINT (val) >= 256) | |
c2982e87 | 1005 | error ("Invalid emacs-mule-id: %"pI"d", XINT (val)); |
3263d5a2 | 1006 | charset.emacs_mule_id = XINT (val); |
c83ef371 | 1007 | } |
f6302ac9 | 1008 | |
3263d5a2 | 1009 | charset.ascii_compatible_p = ! NILP (args[charset_arg_ascii_compatible_p]); |
1d67c29b | 1010 | |
3263d5a2 | 1011 | charset.supplementary_p = ! NILP (args[charset_arg_supplementary_p]); |
4ed46869 | 1012 | |
3263d5a2 KH |
1013 | charset.unified_p = 0; |
1014 | ||
72af86bd | 1015 | memset (charset.fast_map, 0, sizeof (charset.fast_map)); |
3263d5a2 KH |
1016 | |
1017 | if (! NILP (args[charset_arg_code_offset])) | |
1018 | { | |
1019 | val = args[charset_arg_code_offset]; | |
3c7649c1 | 1020 | CHECK_CHARACTER (val); |
3263d5a2 KH |
1021 | |
1022 | charset.method = CHARSET_METHOD_OFFSET; | |
1023 | charset.code_offset = XINT (val); | |
1024 | ||
3263d5a2 | 1025 | i = CODE_POINT_TO_INDEX (&charset, charset.max_code); |
3c7649c1 | 1026 | if (MAX_CHAR - charset.code_offset < i) |
3263d5a2 | 1027 | error ("Unsupported max char: %d", charset.max_char); |
3c7649c1 PE |
1028 | charset.max_char = i + charset.code_offset; |
1029 | i = CODE_POINT_TO_INDEX (&charset, charset.min_code); | |
1030 | charset.min_char = i + charset.code_offset; | |
3263d5a2 | 1031 | |
f148205f KH |
1032 | i = (charset.min_char >> 7) << 7; |
1033 | for (; i < 0x10000 && i <= charset.max_char; i += 128) | |
3263d5a2 | 1034 | CHARSET_FAST_MAP_SET (i, charset.fast_map); |
f148205f | 1035 | i = (i >> 12) << 12; |
3263d5a2 KH |
1036 | for (; i <= charset.max_char; i += 0x1000) |
1037 | CHARSET_FAST_MAP_SET (i, charset.fast_map); | |
3620330b KH |
1038 | if (charset.code_offset == 0 && charset.max_char >= 0x80) |
1039 | charset.ascii_compatible_p = 1; | |
3263d5a2 KH |
1040 | } |
1041 | else if (! NILP (args[charset_arg_map])) | |
1042 | { | |
1043 | val = args[charset_arg_map]; | |
1044 | ASET (attrs, charset_map, val); | |
ecca2aad | 1045 | charset.method = CHARSET_METHOD_MAP; |
3263d5a2 | 1046 | } |
374c5cfd | 1047 | else if (! NILP (args[charset_arg_subset])) |
3263d5a2 | 1048 | { |
374c5cfd KH |
1049 | Lisp_Object parent; |
1050 | Lisp_Object parent_min_code, parent_max_code, parent_code_offset; | |
1051 | struct charset *parent_charset; | |
1052 | ||
1053 | val = args[charset_arg_subset]; | |
1054 | parent = Fcar (val); | |
1055 | CHECK_CHARSET_GET_CHARSET (parent, parent_charset); | |
1056 | parent_min_code = Fnth (make_number (1), val); | |
1057 | CHECK_NATNUM (parent_min_code); | |
1058 | parent_max_code = Fnth (make_number (2), val); | |
1059 | CHECK_NATNUM (parent_max_code); | |
1060 | parent_code_offset = Fnth (make_number (3), val); | |
1061 | CHECK_NUMBER (parent_code_offset); | |
1062 | val = Fmake_vector (make_number (4), Qnil); | |
1063 | ASET (val, 0, make_number (parent_charset->id)); | |
1064 | ASET (val, 1, parent_min_code); | |
1065 | ASET (val, 2, parent_max_code); | |
1066 | ASET (val, 3, parent_code_offset); | |
1067 | ASET (attrs, charset_subset, val); | |
1068 | ||
1069 | charset.method = CHARSET_METHOD_SUBSET; | |
1070 | /* Here, we just copy the parent's fast_map. It's not accurate, | |
1071 | but at least it works for quickly detecting which character | |
1072 | DOESN'T belong to this charset. */ | |
1073 | for (i = 0; i < 190; i++) | |
1074 | charset.fast_map[i] = parent_charset->fast_map[i]; | |
1075 | ||
1076 | /* We also copy these for parents. */ | |
1077 | charset.min_char = parent_charset->min_char; | |
1078 | charset.max_char = parent_charset->max_char; | |
1079 | } | |
1080 | else if (! NILP (args[charset_arg_superset])) | |
0282eb69 | 1081 | { |
374c5cfd KH |
1082 | val = args[charset_arg_superset]; |
1083 | charset.method = CHARSET_METHOD_SUPERSET; | |
3263d5a2 | 1084 | val = Fcopy_sequence (val); |
374c5cfd | 1085 | ASET (attrs, charset_superset, val); |
3263d5a2 KH |
1086 | |
1087 | charset.min_char = MAX_CHAR; | |
1088 | charset.max_char = 0; | |
1089 | for (; ! NILP (val); val = Fcdr (val)) | |
0282eb69 | 1090 | { |
3263d5a2 KH |
1091 | Lisp_Object elt, car_part, cdr_part; |
1092 | int this_id, offset; | |
1093 | struct charset *this_charset; | |
2e344af3 | 1094 | |
3263d5a2 KH |
1095 | elt = Fcar (val); |
1096 | if (CONSP (elt)) | |
2e344af3 | 1097 | { |
3263d5a2 KH |
1098 | car_part = XCAR (elt); |
1099 | cdr_part = XCDR (elt); | |
1100 | CHECK_CHARSET_GET_ID (car_part, this_id); | |
d311d28c | 1101 | CHECK_TYPE_RANGED_INTEGER (int, cdr_part); |
3263d5a2 | 1102 | offset = XINT (cdr_part); |
177c0ea7 | 1103 | } |
3263d5a2 | 1104 | else |
4ed46869 | 1105 | { |
3263d5a2 KH |
1106 | CHECK_CHARSET_GET_ID (elt, this_id); |
1107 | offset = 0; | |
4ed46869 | 1108 | } |
3263d5a2 KH |
1109 | XSETCAR (val, Fcons (make_number (this_id), make_number (offset))); |
1110 | ||
1111 | this_charset = CHARSET_FROM_ID (this_id); | |
1112 | if (charset.min_char > this_charset->min_char) | |
1113 | charset.min_char = this_charset->min_char; | |
1114 | if (charset.max_char < this_charset->max_char) | |
1115 | charset.max_char = this_charset->max_char; | |
1116 | for (i = 0; i < 190; i++) | |
1117 | charset.fast_map[i] |= this_charset->fast_map[i]; | |
0282eb69 | 1118 | } |
0282eb69 | 1119 | } |
2e344af3 | 1120 | else |
3263d5a2 | 1121 | error ("None of :code-offset, :map, :parents are specified"); |
05505664 | 1122 | |
3263d5a2 KH |
1123 | val = args[charset_arg_unify_map]; |
1124 | if (! NILP (val) && !STRINGP (val)) | |
1125 | CHECK_VECTOR (val); | |
1126 | ASET (attrs, charset_unify_map, val); | |
05505664 | 1127 | |
3263d5a2 KH |
1128 | CHECK_LIST (args[charset_arg_plist]); |
1129 | ASET (attrs, charset_plist, args[charset_arg_plist]); | |
4ed46869 | 1130 | |
3263d5a2 KH |
1131 | charset.hash_index = hash_lookup (hash_table, args[charset_arg_name], |
1132 | &hash_code); | |
1133 | if (charset.hash_index >= 0) | |
1134 | { | |
1135 | new_definition_p = 0; | |
4f65af01 | 1136 | id = XFASTINT (CHARSET_SYMBOL_ID (args[charset_arg_name])); |
3263d5a2 KH |
1137 | HASH_VALUE (hash_table, charset.hash_index) = attrs; |
1138 | } | |
1a45ff10 | 1139 | else |
3263d5a2 KH |
1140 | { |
1141 | charset.hash_index = hash_put (hash_table, args[charset_arg_name], attrs, | |
1142 | hash_code); | |
1143 | if (charset_table_used == charset_table_size) | |
1144 | { | |
e097a6fa | 1145 | /* Ensure that charset IDs fit into 'int' as well as into the |
0065d054 PE |
1146 | restriction imposed by fixnums. Although the 'int' restriction |
1147 | could be removed, too much other code would need altering; for | |
1148 | example, the IDs are stuffed into struct | |
1149 | coding_system.charbuf[i] entries, which are 'int'. */ | |
1150 | int old_size = charset_table_size; | |
1151 | struct charset *new_table = | |
1152 | xpalloc (0, &charset_table_size, 1, | |
1153 | min (INT_MAX, MOST_POSITIVE_FIXNUM), | |
1154 | sizeof *charset_table); | |
1155 | memcpy (new_table, charset_table, old_size * sizeof *new_table); | |
2fe1edd1 | 1156 | charset_table = new_table; |
f701dc2a PE |
1157 | /* FIXME: This leaks memory, as the old charset_table becomes |
1158 | unreachable. If the old charset table is charset_table_init | |
1159 | then this leak is intentional; otherwise, it's unclear. | |
1160 | If the latter memory leak is intentional, a | |
0065d054 PE |
1161 | comment should be added to explain this. If not, the old |
1162 | charset_table should be freed, by passing it as the 1st argument | |
1163 | to xpalloc and removing the memcpy. */ | |
3263d5a2 KH |
1164 | } |
1165 | id = charset_table_used++; | |
3263d5a2 KH |
1166 | new_definition_p = 1; |
1167 | } | |
2e344af3 | 1168 | |
4f65af01 | 1169 | ASET (attrs, charset_id, make_number (id)); |
3263d5a2 KH |
1170 | charset.id = id; |
1171 | charset_table[id] = charset; | |
2e344af3 | 1172 | |
ecca2aad | 1173 | if (charset.method == CHARSET_METHOD_MAP) |
b8ebe9dd KH |
1174 | { |
1175 | load_charset (&charset, 0); | |
1176 | charset_table[id] = charset; | |
1177 | } | |
ecca2aad | 1178 | |
3263d5a2 | 1179 | if (charset.iso_final >= 0) |
4ed46869 | 1180 | { |
3263d5a2 KH |
1181 | ISO_CHARSET_TABLE (charset.dimension, charset.iso_chars_96, |
1182 | charset.iso_final) = id; | |
1183 | if (new_definition_p) | |
1184 | Viso_2022_charset_list = nconc2 (Viso_2022_charset_list, | |
1185 | Fcons (make_number (id), Qnil)); | |
7c7dceee KH |
1186 | if (ISO_CHARSET_TABLE (1, 0, 'J') == id) |
1187 | charset_jisx0201_roman = id; | |
1188 | else if (ISO_CHARSET_TABLE (2, 0, '@') == id) | |
1189 | charset_jisx0208_1978 = id; | |
1190 | else if (ISO_CHARSET_TABLE (2, 0, 'B') == id) | |
1191 | charset_jisx0208 = id; | |
d32320c4 KH |
1192 | else if (ISO_CHARSET_TABLE (2, 0, 'C') == id) |
1193 | charset_ksc5601 = id; | |
4ed46869 | 1194 | } |
d0cf2d48 | 1195 | |
3263d5a2 | 1196 | if (charset.emacs_mule_id >= 0) |
4ed46869 | 1197 | { |
b84ae584 | 1198 | emacs_mule_charset[charset.emacs_mule_id] = id; |
4f65af01 KH |
1199 | if (charset.emacs_mule_id < 0xA0) |
1200 | emacs_mule_bytes[charset.emacs_mule_id] = charset.dimension + 1; | |
3b1ae89b KH |
1201 | else |
1202 | emacs_mule_bytes[charset.emacs_mule_id] = charset.dimension + 2; | |
3263d5a2 KH |
1203 | if (new_definition_p) |
1204 | Vemacs_mule_charset_list = nconc2 (Vemacs_mule_charset_list, | |
1205 | Fcons (make_number (id), Qnil)); | |
4ed46869 KH |
1206 | } |
1207 | ||
3263d5a2 KH |
1208 | if (new_definition_p) |
1209 | { | |
1210 | Vcharset_list = Fcons (args[charset_arg_name], Vcharset_list); | |
8055c66a KH |
1211 | if (charset.supplementary_p) |
1212 | Vcharset_ordered_list = nconc2 (Vcharset_ordered_list, | |
1213 | Fcons (make_number (id), Qnil)); | |
1214 | else | |
880820fe KH |
1215 | { |
1216 | Lisp_Object tail; | |
1217 | ||
1218 | for (tail = Vcharset_ordered_list; CONSP (tail); tail = XCDR (tail)) | |
1219 | { | |
1220 | struct charset *cs = CHARSET_FROM_ID (XINT (XCAR (tail))); | |
1221 | ||
1222 | if (cs->supplementary_p) | |
1223 | break; | |
1224 | } | |
1225 | if (EQ (tail, Vcharset_ordered_list)) | |
1226 | Vcharset_ordered_list = Fcons (make_number (id), | |
1227 | Vcharset_ordered_list); | |
1228 | else if (NILP (tail)) | |
1229 | Vcharset_ordered_list = nconc2 (Vcharset_ordered_list, | |
1230 | Fcons (make_number (id), Qnil)); | |
1231 | else | |
1232 | { | |
1233 | val = Fcons (XCAR (tail), XCDR (tail)); | |
1234 | XSETCDR (tail, val); | |
1235 | XSETCAR (tail, make_number (id)); | |
1236 | } | |
1237 | } | |
dbbb237d | 1238 | charset_ordered_list_tick++; |
3263d5a2 | 1239 | } |
4ed46869 | 1240 | |
3263d5a2 | 1241 | return Qnil; |
4ed46869 KH |
1242 | } |
1243 | ||
2fe1edd1 KH |
1244 | |
1245 | /* Same as Fdefine_charset_internal but arguments are more convenient | |
1246 | to call from C (typically in syms_of_charset). This can define a | |
1247 | charset of `offset' method only. Return the ID of the new | |
1248 | charset. */ | |
1249 | ||
1250 | static int | |
dd4c5104 DN |
1251 | define_charset_internal (Lisp_Object name, |
1252 | int dimension, | |
dfb6afda | 1253 | const char *code_space_chars, |
dd4c5104 DN |
1254 | unsigned min_code, unsigned max_code, |
1255 | int iso_final, int iso_revision, int emacs_mule_id, | |
1256 | int ascii_compatible, int supplementary, | |
1257 | int code_offset) | |
2fe1edd1 | 1258 | { |
dfb6afda | 1259 | const unsigned char *code_space = (const unsigned char *) code_space_chars; |
2fe1edd1 KH |
1260 | Lisp_Object args[charset_arg_max]; |
1261 | Lisp_Object plist[14]; | |
1262 | Lisp_Object val; | |
1263 | int i; | |
1264 | ||
1265 | args[charset_arg_name] = name; | |
1266 | args[charset_arg_dimension] = make_number (dimension); | |
1267 | val = Fmake_vector (make_number (8), make_number (0)); | |
1268 | for (i = 0; i < 8; i++) | |
1269 | ASET (val, i, make_number (code_space[i])); | |
1270 | args[charset_arg_code_space] = val; | |
1271 | args[charset_arg_min_code] = make_number (min_code); | |
1272 | args[charset_arg_max_code] = make_number (max_code); | |
1273 | args[charset_arg_iso_final] | |
1274 | = (iso_final < 0 ? Qnil : make_number (iso_final)); | |
1275 | args[charset_arg_iso_revision] = make_number (iso_revision); | |
1276 | args[charset_arg_emacs_mule_id] | |
1277 | = (emacs_mule_id < 0 ? Qnil : make_number (emacs_mule_id)); | |
1278 | args[charset_arg_ascii_compatible_p] = ascii_compatible ? Qt : Qnil; | |
7acf89e6 | 1279 | args[charset_arg_supplementary_p] = supplementary ? Qt : Qnil; |
2fe1edd1 KH |
1280 | args[charset_arg_invalid_code] = Qnil; |
1281 | args[charset_arg_code_offset] = make_number (code_offset); | |
1282 | args[charset_arg_map] = Qnil; | |
1283 | args[charset_arg_subset] = Qnil; | |
1284 | args[charset_arg_superset] = Qnil; | |
1285 | args[charset_arg_unify_map] = Qnil; | |
1286 | ||
d67b4f80 | 1287 | plist[0] = intern_c_string (":name"); |
2fe1edd1 | 1288 | plist[1] = args[charset_arg_name]; |
d67b4f80 | 1289 | plist[2] = intern_c_string (":dimension"); |
2fe1edd1 | 1290 | plist[3] = args[charset_arg_dimension]; |
d67b4f80 | 1291 | plist[4] = intern_c_string (":code-space"); |
2fe1edd1 | 1292 | plist[5] = args[charset_arg_code_space]; |
d67b4f80 | 1293 | plist[6] = intern_c_string (":iso-final-char"); |
2fe1edd1 | 1294 | plist[7] = args[charset_arg_iso_final]; |
d67b4f80 | 1295 | plist[8] = intern_c_string (":emacs-mule-id"); |
2fe1edd1 | 1296 | plist[9] = args[charset_arg_emacs_mule_id]; |
d67b4f80 | 1297 | plist[10] = intern_c_string (":ascii-compatible-p"); |
2fe1edd1 | 1298 | plist[11] = args[charset_arg_ascii_compatible_p]; |
d67b4f80 | 1299 | plist[12] = intern_c_string (":code-offset"); |
2fe1edd1 KH |
1300 | plist[13] = args[charset_arg_code_offset]; |
1301 | ||
1302 | args[charset_arg_plist] = Flist (14, plist); | |
1303 | Fdefine_charset_internal (charset_arg_max, args); | |
1304 | ||
1305 | return XINT (CHARSET_SYMBOL_ID (name)); | |
1306 | } | |
1307 | ||
1308 | ||
3263d5a2 KH |
1309 | DEFUN ("define-charset-alias", Fdefine_charset_alias, |
1310 | Sdefine_charset_alias, 2, 2, 0, | |
1311 | doc: /* Define ALIAS as an alias for charset CHARSET. */) | |
5842a27b | 1312 | (Lisp_Object alias, Lisp_Object charset) |
4ed46869 | 1313 | { |
3263d5a2 KH |
1314 | Lisp_Object attr; |
1315 | ||
1316 | CHECK_CHARSET_GET_ATTR (charset, attr); | |
1317 | Fputhash (alias, attr, Vcharset_hash_table); | |
528623a0 | 1318 | Vcharset_list = Fcons (alias, Vcharset_list); |
3263d5a2 KH |
1319 | return Qnil; |
1320 | } | |
4ed46869 | 1321 | |
4ed46869 | 1322 | |
3263d5a2 | 1323 | DEFUN ("charset-plist", Fcharset_plist, Scharset_plist, 1, 1, 0, |
56a46d1d | 1324 | doc: /* Return the property list of CHARSET. */) |
5842a27b | 1325 | (Lisp_Object charset) |
3263d5a2 KH |
1326 | { |
1327 | Lisp_Object attrs; | |
1328 | ||
1329 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
1330 | return CHARSET_ATTR_PLIST (attrs); | |
1331 | } | |
1332 | ||
1333 | ||
1334 | DEFUN ("set-charset-plist", Fset_charset_plist, Sset_charset_plist, 2, 2, 0, | |
1335 | doc: /* Set CHARSET's property list to PLIST. */) | |
5842a27b | 1336 | (Lisp_Object charset, Lisp_Object plist) |
3263d5a2 KH |
1337 | { |
1338 | Lisp_Object attrs; | |
1339 | ||
1340 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
1341 | CHARSET_ATTR_PLIST (attrs) = plist; | |
1342 | return plist; | |
1343 | } | |
1344 | ||
1345 | ||
dbbb237d | 1346 | DEFUN ("unify-charset", Funify_charset, Sunify_charset, 1, 3, 0, |
56a46d1d DL |
1347 | doc: /* Unify characters of CHARSET with Unicode. |
1348 | This means reading the relevant file and installing the table defined | |
dbbb237d KH |
1349 | by CHARSET's `:unify-map' property. |
1350 | ||
64165ae2 DL |
1351 | Optional second arg UNIFY-MAP is a file name string or a vector. It has |
1352 | the same meaning as the `:unify-map' attribute in the function | |
dbbb237d KH |
1353 | `define-charset' (which see). |
1354 | ||
1355 | Optional third argument DEUNIFY, if non-nil, means to de-unify CHARSET. */) | |
5842a27b | 1356 | (Lisp_Object charset, Lisp_Object unify_map, Lisp_Object deunify) |
8a73a704 | 1357 | { |
3263d5a2 KH |
1358 | int id; |
1359 | struct charset *cs; | |
8f924df7 | 1360 | |
3263d5a2 KH |
1361 | CHECK_CHARSET_GET_ID (charset, id); |
1362 | cs = CHARSET_FROM_ID (id); | |
dbbb237d KH |
1363 | if (NILP (deunify) |
1364 | ? CHARSET_UNIFIED_P (cs) && ! NILP (CHARSET_DEUNIFIER (cs)) | |
1365 | : ! CHARSET_UNIFIED_P (cs)) | |
3263d5a2 | 1366 | return Qnil; |
dbbb237d | 1367 | |
3263d5a2 | 1368 | CHARSET_UNIFIED_P (cs) = 0; |
dbbb237d KH |
1369 | if (NILP (deunify)) |
1370 | { | |
ecca2aad KH |
1371 | if (CHARSET_METHOD (cs) != CHARSET_METHOD_OFFSET |
1372 | || CHARSET_CODE_OFFSET (cs) < 0x110000) | |
8f924df7 | 1373 | error ("Can't unify charset: %s", SDATA (SYMBOL_NAME (charset))); |
dbbb237d KH |
1374 | if (NILP (unify_map)) |
1375 | unify_map = CHARSET_UNIFY_MAP (cs); | |
dbbb237d | 1376 | else |
ecca2aad KH |
1377 | { |
1378 | if (! STRINGP (unify_map) && ! VECTORP (unify_map)) | |
1379 | signal_error ("Bad unify-map", unify_map); | |
1380 | CHARSET_UNIFY_MAP (cs) = unify_map; | |
1381 | } | |
1382 | if (NILP (Vchar_unify_table)) | |
1383 | Vchar_unify_table = Fmake_char_table (Qnil, Qnil); | |
1384 | char_table_set_range (Vchar_unify_table, | |
1385 | cs->min_char, cs->max_char, charset); | |
dbbb237d KH |
1386 | CHARSET_UNIFIED_P (cs) = 1; |
1387 | } | |
1388 | else if (CHAR_TABLE_P (Vchar_unify_table)) | |
1389 | { | |
3c7649c1 PE |
1390 | unsigned min_code = CHARSET_MIN_CODE (cs); |
1391 | unsigned max_code = CHARSET_MAX_CODE (cs); | |
dbbb237d KH |
1392 | int min_char = DECODE_CHAR (cs, min_code); |
1393 | int max_char = DECODE_CHAR (cs, max_code); | |
8f924df7 | 1394 | |
dbbb237d KH |
1395 | char_table_set_range (Vchar_unify_table, min_char, max_char, Qnil); |
1396 | } | |
8f924df7 | 1397 | |
3263d5a2 | 1398 | return Qnil; |
8a73a704 KH |
1399 | } |
1400 | ||
3fac5a51 KH |
1401 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
1402 | Sget_unused_iso_final_char, 2, 2, 0, | |
3263d5a2 | 1403 | doc: /* |
d0cf2d48 | 1404 | Return an unused ISO final char for a charset of DIMENSION and CHARS. |
fdb82f93 PJ |
1405 | DIMENSION is the number of bytes to represent a character: 1 or 2. |
1406 | CHARS is the number of characters in a dimension: 94 or 96. | |
1407 | ||
1408 | This final char is for private use, thus the range is `0' (48) .. `?' (63). | |
1721b6af | 1409 | If there's no unused final char for the specified kind of charset, |
fdb82f93 | 1410 | return nil. */) |
5842a27b | 1411 | (Lisp_Object dimension, Lisp_Object chars) |
3fac5a51 KH |
1412 | { |
1413 | int final_char; | |
1414 | ||
b7826503 PJ |
1415 | CHECK_NUMBER (dimension); |
1416 | CHECK_NUMBER (chars); | |
3263d5a2 KH |
1417 | if (XINT (dimension) != 1 && XINT (dimension) != 2 && XINT (dimension) != 3) |
1418 | args_out_of_range_3 (dimension, make_number (1), make_number (3)); | |
3fac5a51 | 1419 | if (XINT (chars) != 94 && XINT (chars) != 96) |
3263d5a2 | 1420 | args_out_of_range_3 (chars, make_number (94), make_number (96)); |
3fac5a51 | 1421 | for (final_char = '0'; final_char <= '?'; final_char++) |
3263d5a2 KH |
1422 | if (ISO_CHARSET_TABLE (XINT (dimension), XINT (chars), final_char) < 0) |
1423 | break; | |
3fac5a51 KH |
1424 | return (final_char <= '?' ? make_number (final_char) : Qnil); |
1425 | } | |
1426 | ||
3263d5a2 | 1427 | static void |
971de7fb | 1428 | check_iso_charset_parameter (Lisp_Object dimension, Lisp_Object chars, Lisp_Object final_char) |
4ed46869 | 1429 | { |
3263d5a2 KH |
1430 | CHECK_NATNUM (dimension); |
1431 | CHECK_NATNUM (chars); | |
e6c3da20 | 1432 | CHECK_CHARACTER (final_char); |
4ed46869 | 1433 | |
3263d5a2 | 1434 | if (XINT (dimension) > 3) |
c2982e87 | 1435 | error ("Invalid DIMENSION %"pI"d, it should be 1, 2, or 3", |
5fdb398c | 1436 | XINT (dimension)); |
4ed46869 | 1437 | if (XINT (chars) != 94 && XINT (chars) != 96) |
c2982e87 | 1438 | error ("Invalid CHARS %"pI"d, it should be 94 or 96", XINT (chars)); |
3263d5a2 | 1439 | if (XINT (final_char) < '0' || XINT (final_char) > '~') |
e6c3da20 EZ |
1440 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", |
1441 | (int)XINT (final_char)); | |
3263d5a2 KH |
1442 | } |
1443 | ||
1444 | ||
1445 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, | |
1446 | 4, 4, 0, | |
cefd8c4f KH |
1447 | doc: /* Declare an equivalent charset for ISO-2022 decoding. |
1448 | ||
1449 | On decoding by an ISO-2022 base coding system, when a charset | |
1450 | specified by DIMENSION, CHARS, and FINAL-CHAR is designated, behave as | |
1451 | if CHARSET is designated instead. */) | |
5842a27b | 1452 | (Lisp_Object dimension, Lisp_Object chars, Lisp_Object final_char, Lisp_Object charset) |
3263d5a2 KH |
1453 | { |
1454 | int id; | |
82215ce9 | 1455 | int chars_flag; |
4ed46869 | 1456 | |
3263d5a2 KH |
1457 | CHECK_CHARSET_GET_ID (charset, id); |
1458 | check_iso_charset_parameter (dimension, chars, final_char); | |
82215ce9 KH |
1459 | chars_flag = XINT (chars) == 96; |
1460 | ISO_CHARSET_TABLE (XINT (dimension), chars_flag, XINT (final_char)) = id; | |
4ed46869 KH |
1461 | return Qnil; |
1462 | } | |
1463 | ||
3263d5a2 | 1464 | |
2e344af3 KH |
1465 | /* Return information about charsets in the text at PTR of NBYTES |
1466 | bytes, which are NCHARS characters. The value is: | |
f6302ac9 | 1467 | |
cfe34140 | 1468 | 0: Each character is represented by one byte. This is always |
3263d5a2 KH |
1469 | true for a unibyte string. For a multibyte string, true if |
1470 | it contains only ASCII characters. | |
1471 | ||
28c026cd DL |
1472 | 1: No charsets other than ascii, control-1, and latin-1 are |
1473 | found. | |
1d67c29b | 1474 | |
3263d5a2 KH |
1475 | 2: Otherwise. |
1476 | */ | |
4ed46869 KH |
1477 | |
1478 | int | |
971de7fb | 1479 | string_xstring_p (Lisp_Object string) |
4ed46869 | 1480 | { |
8f924df7 KH |
1481 | const unsigned char *p = SDATA (string); |
1482 | const unsigned char *endp = p + SBYTES (string); | |
3263d5a2 | 1483 | |
8f924df7 | 1484 | if (SCHARS (string) == SBYTES (string)) |
3263d5a2 KH |
1485 | return 0; |
1486 | ||
3263d5a2 | 1487 | while (p < endp) |
0282eb69 | 1488 | { |
3263d5a2 | 1489 | int c = STRING_CHAR_ADVANCE (p); |
2e344af3 | 1490 | |
3cc67a4d | 1491 | if (c >= 0x100) |
3263d5a2 | 1492 | return 2; |
0282eb69 | 1493 | } |
3263d5a2 KH |
1494 | return 1; |
1495 | } | |
05505664 | 1496 | |
05505664 | 1497 | |
3263d5a2 | 1498 | /* Find charsets in the string at PTR of NCHARS and NBYTES. |
4ed46869 | 1499 | |
3cc67a4d KH |
1500 | CHARSETS is a vector. If Nth element is non-nil, it means the |
1501 | charset whose id is N is already found. | |
2e344af3 | 1502 | |
3263d5a2 | 1503 | It may lookup a translation table TABLE if supplied. */ |
2e344af3 | 1504 | |
3263d5a2 | 1505 | static void |
d311d28c | 1506 | find_charsets_in_text (const unsigned char *ptr, ptrdiff_t nchars, ptrdiff_t nbytes, Lisp_Object charsets, Lisp_Object table, int multibyte) |
3263d5a2 | 1507 | { |
dbbb237d | 1508 | const unsigned char *pend = ptr + nbytes; |
3263d5a2 KH |
1509 | |
1510 | if (nchars == nbytes) | |
3263d5a2 | 1511 | { |
3cc67a4d KH |
1512 | if (multibyte) |
1513 | ASET (charsets, charset_ascii, Qt); | |
1514 | else | |
1515 | while (ptr < pend) | |
1516 | { | |
1517 | int c = *ptr++; | |
1518 | ||
1519 | if (!NILP (table)) | |
1520 | c = translate_char (table, c); | |
1521 | if (ASCII_BYTE_P (c)) | |
1522 | ASET (charsets, charset_ascii, Qt); | |
1523 | else | |
1524 | ASET (charsets, charset_eight_bit, Qt); | |
1525 | } | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | while (ptr < pend) | |
3263d5a2 | 1530 | { |
3cc67a4d KH |
1531 | int c = STRING_CHAR_ADVANCE (ptr); |
1532 | struct charset *charset; | |
3263d5a2 | 1533 | |
3cc67a4d KH |
1534 | if (!NILP (table)) |
1535 | c = translate_char (table, c); | |
1536 | charset = CHAR_CHARSET (c); | |
1537 | ASET (charsets, CHARSET_ID (charset), Qt); | |
4ed46869 | 1538 | } |
4ed46869 | 1539 | } |
4ed46869 KH |
1540 | } |
1541 | ||
1542 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, | |
23d2a7f1 | 1543 | 2, 3, 0, |
fdb82f93 PJ |
1544 | doc: /* Return a list of charsets in the region between BEG and END. |
1545 | BEG and END are buffer positions. | |
1546 | Optional arg TABLE if non-nil is a translation table to look up. | |
1547 | ||
fdb82f93 PJ |
1548 | If the current buffer is unibyte, the returned list may contain |
1549 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) | |
5842a27b | 1550 | (Lisp_Object beg, Lisp_Object end, Lisp_Object table) |
4ed46869 | 1551 | { |
3263d5a2 | 1552 | Lisp_Object charsets; |
d311d28c | 1553 | ptrdiff_t from, from_byte, to, stop, stop_byte; |
42ca828e | 1554 | int i; |
4ed46869 | 1555 | Lisp_Object val; |
4b4deea2 | 1556 | int multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters)); |
4ed46869 KH |
1557 | |
1558 | validate_region (&beg, &end); | |
1559 | from = XFASTINT (beg); | |
1560 | stop = to = XFASTINT (end); | |
6ae1f27e | 1561 | |
4ed46869 | 1562 | if (from < GPT && GPT < to) |
6ae1f27e RS |
1563 | { |
1564 | stop = GPT; | |
1565 | stop_byte = GPT_BYTE; | |
1566 | } | |
1567 | else | |
1568 | stop_byte = CHAR_TO_BYTE (stop); | |
1569 | ||
1570 | from_byte = CHAR_TO_BYTE (from); | |
1571 | ||
3263d5a2 | 1572 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
4ed46869 KH |
1573 | while (1) |
1574 | { | |
3263d5a2 | 1575 | find_charsets_in_text (BYTE_POS_ADDR (from_byte), stop - from, |
3cc67a4d KH |
1576 | stop_byte - from_byte, charsets, table, |
1577 | multibyte); | |
4ed46869 | 1578 | if (stop < to) |
6ae1f27e RS |
1579 | { |
1580 | from = stop, from_byte = stop_byte; | |
1581 | stop = to, stop_byte = CHAR_TO_BYTE (stop); | |
1582 | } | |
4ed46869 KH |
1583 | else |
1584 | break; | |
1585 | } | |
6ae1f27e | 1586 | |
4ed46869 | 1587 | val = Qnil; |
3263d5a2 | 1588 | for (i = charset_table_used - 1; i >= 0; i--) |
3cc67a4d | 1589 | if (!NILP (AREF (charsets, i))) |
3263d5a2 | 1590 | val = Fcons (CHARSET_NAME (charset_table + i), val); |
4ed46869 KH |
1591 | return val; |
1592 | } | |
1593 | ||
1594 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, | |
23d2a7f1 | 1595 | 1, 2, 0, |
fdb82f93 PJ |
1596 | doc: /* Return a list of charsets in STR. |
1597 | Optional arg TABLE if non-nil is a translation table to look up. | |
1598 | ||
fdb82f93 | 1599 | If STR is unibyte, the returned list may contain |
3263d5a2 | 1600 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) |
5842a27b | 1601 | (Lisp_Object str, Lisp_Object table) |
4ed46869 | 1602 | { |
3263d5a2 | 1603 | Lisp_Object charsets; |
4ed46869 KH |
1604 | int i; |
1605 | Lisp_Object val; | |
1606 | ||
b7826503 | 1607 | CHECK_STRING (str); |
87b089ad | 1608 | |
3263d5a2 | 1609 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
8f924df7 | 1610 | find_charsets_in_text (SDATA (str), SCHARS (str), SBYTES (str), |
3cc67a4d KH |
1611 | charsets, table, |
1612 | STRING_MULTIBYTE (str)); | |
4ed46869 | 1613 | val = Qnil; |
3263d5a2 | 1614 | for (i = charset_table_used - 1; i >= 0; i--) |
3cc67a4d | 1615 | if (!NILP (AREF (charsets, i))) |
3263d5a2 | 1616 | val = Fcons (CHARSET_NAME (charset_table + i), val); |
4ed46869 KH |
1617 | return val; |
1618 | } | |
2e344af3 | 1619 | |
4ed46869 | 1620 | \f |
3263d5a2 | 1621 | |
ecca2aad KH |
1622 | /* Return a unified character code for C (>= 0x110000). VAL is a |
1623 | value of Vchar_unify_table for C; i.e. it is nil, an integer, or a | |
1624 | charset symbol. */ | |
1625 | int | |
971de7fb | 1626 | maybe_unify_char (int c, Lisp_Object val) |
ecca2aad KH |
1627 | { |
1628 | struct charset *charset; | |
1629 | ||
1630 | if (INTEGERP (val)) | |
ccd9a01a | 1631 | return XFASTINT (val); |
ecca2aad KH |
1632 | if (NILP (val)) |
1633 | return c; | |
1634 | ||
1635 | CHECK_CHARSET_GET_CHARSET (val, charset); | |
291d430f | 1636 | #ifdef REL_ALLOC |
efc00ab1 | 1637 | /* The call to load_charset below can allocate memory, which screws |
291d430f EZ |
1638 | callers of this function through STRING_CHAR_* macros that hold C |
1639 | pointers to buffer text, if REL_ALLOC is used. */ | |
1640 | r_alloc_inhibit_buffer_relocation (1); | |
1641 | #endif | |
ecca2aad KH |
1642 | load_charset (charset, 1); |
1643 | if (! inhibit_load_charset_map) | |
1644 | { | |
1645 | val = CHAR_TABLE_REF (Vchar_unify_table, c); | |
1646 | if (! NILP (val)) | |
ccd9a01a | 1647 | c = XFASTINT (val); |
ecca2aad KH |
1648 | } |
1649 | else | |
1650 | { | |
1651 | int code_index = c - CHARSET_CODE_OFFSET (charset); | |
1652 | int unified = GET_TEMP_CHARSET_WORK_DECODER (code_index); | |
1653 | ||
1654 | if (unified > 0) | |
1655 | c = unified; | |
1656 | } | |
291d430f EZ |
1657 | #ifdef REL_ALLOC |
1658 | r_alloc_inhibit_buffer_relocation (0); | |
1659 | #endif | |
ecca2aad KH |
1660 | return c; |
1661 | } | |
1662 | ||
1663 | ||
bbd240ce | 1664 | /* Return a character corresponding to the code-point CODE of |
3263d5a2 KH |
1665 | CHARSET. */ |
1666 | ||
1667 | int | |
971de7fb | 1668 | decode_char (struct charset *charset, unsigned int code) |
4ed46869 | 1669 | { |
3263d5a2 KH |
1670 | int c, char_index; |
1671 | enum charset_method method = CHARSET_METHOD (charset); | |
ac4137cc | 1672 | |
3263d5a2 KH |
1673 | if (code < CHARSET_MIN_CODE (charset) || code > CHARSET_MAX_CODE (charset)) |
1674 | return -1; | |
4ed46869 | 1675 | |
374c5cfd | 1676 | if (method == CHARSET_METHOD_SUBSET) |
2e344af3 | 1677 | { |
374c5cfd KH |
1678 | Lisp_Object subset_info; |
1679 | ||
1680 | subset_info = CHARSET_SUBSET (charset); | |
1681 | charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
1682 | code -= XINT (AREF (subset_info, 3)); | |
1683 | if (code < XFASTINT (AREF (subset_info, 1)) | |
1684 | || code > XFASTINT (AREF (subset_info, 2))) | |
1685 | c = -1; | |
1686 | else | |
1687 | c = DECODE_CHAR (charset, code); | |
2e344af3 | 1688 | } |
374c5cfd | 1689 | else if (method == CHARSET_METHOD_SUPERSET) |
2e344af3 | 1690 | { |
3263d5a2 | 1691 | Lisp_Object parents; |
4ed46869 | 1692 | |
374c5cfd | 1693 | parents = CHARSET_SUPERSET (charset); |
3263d5a2 KH |
1694 | c = -1; |
1695 | for (; CONSP (parents); parents = XCDR (parents)) | |
1696 | { | |
1697 | int id = XINT (XCAR (XCAR (parents))); | |
1698 | int code_offset = XINT (XCDR (XCAR (parents))); | |
374c5cfd | 1699 | unsigned this_code = code - code_offset; |
4ed46869 | 1700 | |
3263d5a2 KH |
1701 | charset = CHARSET_FROM_ID (id); |
1702 | if ((c = DECODE_CHAR (charset, this_code)) >= 0) | |
1703 | break; | |
1704 | } | |
1705 | } | |
1706 | else | |
ac4137cc | 1707 | { |
3263d5a2 | 1708 | char_index = CODE_POINT_TO_INDEX (charset, code); |
69f8de5b KH |
1709 | if (char_index < 0) |
1710 | return -1; | |
4ed46869 | 1711 | |
3263d5a2 | 1712 | if (method == CHARSET_METHOD_MAP) |
ac4137cc | 1713 | { |
3263d5a2 | 1714 | Lisp_Object decoder; |
4ed46869 | 1715 | |
3263d5a2 KH |
1716 | decoder = CHARSET_DECODER (charset); |
1717 | if (! VECTORP (decoder)) | |
ecca2aad KH |
1718 | { |
1719 | load_charset (charset, 1); | |
1720 | decoder = CHARSET_DECODER (charset); | |
1721 | } | |
1722 | if (VECTORP (decoder)) | |
1723 | c = XINT (AREF (decoder, char_index)); | |
1724 | else | |
1725 | c = GET_TEMP_CHARSET_WORK_DECODER (char_index); | |
ac4137cc | 1726 | } |
ecca2aad | 1727 | else /* method == CHARSET_METHOD_OFFSET */ |
ac4137cc | 1728 | { |
3263d5a2 | 1729 | c = char_index + CHARSET_CODE_OFFSET (charset); |
ecca2aad KH |
1730 | if (CHARSET_UNIFIED_P (charset) |
1731 | && c > MAX_UNICODE_CHAR) | |
1732 | MAYBE_UNIFY_CHAR (c); | |
ac4137cc KH |
1733 | } |
1734 | } | |
4ed46869 | 1735 | |
3263d5a2 | 1736 | return c; |
90d7b74e KH |
1737 | } |
1738 | ||
374c5cfd KH |
1739 | /* Variable used temporarily by the macro ENCODE_CHAR. */ |
1740 | Lisp_Object charset_work; | |
4ed46869 | 1741 | |
3263d5a2 | 1742 | /* Return a code-point of CHAR in CHARSET. If CHAR doesn't belong to |
28c026cd DL |
1743 | CHARSET, return CHARSET_INVALID_CODE (CHARSET). If STRICT is true, |
1744 | use CHARSET's strict_max_char instead of max_char. */ | |
4ed46869 | 1745 | |
3263d5a2 | 1746 | unsigned |
971de7fb | 1747 | encode_char (struct charset *charset, int c) |
9d3d8cba | 1748 | { |
3263d5a2 KH |
1749 | unsigned code; |
1750 | enum charset_method method = CHARSET_METHOD (charset); | |
9d3d8cba | 1751 | |
3263d5a2 | 1752 | if (CHARSET_UNIFIED_P (charset)) |
ac4137cc | 1753 | { |
6809ca75 | 1754 | Lisp_Object deunifier; |
ecca2aad | 1755 | int code_index = -1; |
4ed46869 | 1756 | |
3263d5a2 KH |
1757 | deunifier = CHARSET_DEUNIFIER (charset); |
1758 | if (! CHAR_TABLE_P (deunifier)) | |
ac4137cc | 1759 | { |
ecca2aad | 1760 | load_charset (charset, 2); |
3263d5a2 | 1761 | deunifier = CHARSET_DEUNIFIER (charset); |
ac4137cc | 1762 | } |
ecca2aad KH |
1763 | if (CHAR_TABLE_P (deunifier)) |
1764 | { | |
1765 | Lisp_Object deunified = CHAR_TABLE_REF (deunifier, c); | |
1766 | ||
1767 | if (INTEGERP (deunified)) | |
1768 | code_index = XINT (deunified); | |
1769 | } | |
1770 | else | |
1771 | { | |
1772 | code_index = GET_TEMP_CHARSET_WORK_ENCODER (c); | |
1773 | } | |
1774 | if (code_index >= 0) | |
1775 | c = CHARSET_CODE_OFFSET (charset) + code_index; | |
ac4137cc | 1776 | } |
9d3d8cba | 1777 | |
374c5cfd KH |
1778 | if (method == CHARSET_METHOD_SUBSET) |
1779 | { | |
1780 | Lisp_Object subset_info; | |
1781 | struct charset *this_charset; | |
1782 | ||
1783 | subset_info = CHARSET_SUBSET (charset); | |
1784 | this_charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
1785 | code = ENCODE_CHAR (this_charset, c); | |
1786 | if (code == CHARSET_INVALID_CODE (this_charset) | |
1787 | || code < XFASTINT (AREF (subset_info, 1)) | |
1788 | || code > XFASTINT (AREF (subset_info, 2))) | |
1789 | return CHARSET_INVALID_CODE (charset); | |
1790 | code += XINT (AREF (subset_info, 3)); | |
1791 | return code; | |
1792 | } | |
9d3d8cba | 1793 | |
374c5cfd | 1794 | if (method == CHARSET_METHOD_SUPERSET) |
859f2b3c | 1795 | { |
3263d5a2 | 1796 | Lisp_Object parents; |
d2665018 | 1797 | |
374c5cfd | 1798 | parents = CHARSET_SUPERSET (charset); |
3263d5a2 | 1799 | for (; CONSP (parents); parents = XCDR (parents)) |
beeedaad | 1800 | { |
3263d5a2 KH |
1801 | int id = XINT (XCAR (XCAR (parents))); |
1802 | int code_offset = XINT (XCDR (XCAR (parents))); | |
1803 | struct charset *this_charset = CHARSET_FROM_ID (id); | |
d2665018 | 1804 | |
3263d5a2 | 1805 | code = ENCODE_CHAR (this_charset, c); |
dbbb237d KH |
1806 | if (code != CHARSET_INVALID_CODE (this_charset)) |
1807 | return code + code_offset; | |
beeedaad | 1808 | } |
3263d5a2 KH |
1809 | return CHARSET_INVALID_CODE (charset); |
1810 | } | |
1bcc1567 | 1811 | |
15c85a88 KH |
1812 | if (! CHARSET_FAST_MAP_REF ((c), charset->fast_map) |
1813 | || c < CHARSET_MIN_CHAR (charset) || c > CHARSET_MAX_CHAR (charset)) | |
1814 | return CHARSET_INVALID_CODE (charset); | |
1bcc1567 | 1815 | |
3263d5a2 | 1816 | if (method == CHARSET_METHOD_MAP) |
3f62427c | 1817 | { |
3263d5a2 | 1818 | Lisp_Object encoder; |
beeedaad | 1819 | Lisp_Object val; |
9b6a601f | 1820 | |
3263d5a2 KH |
1821 | encoder = CHARSET_ENCODER (charset); |
1822 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
b8ebe9dd KH |
1823 | { |
1824 | load_charset (charset, 2); | |
1825 | encoder = CHARSET_ENCODER (charset); | |
1826 | } | |
1827 | if (CHAR_TABLE_P (encoder)) | |
ecca2aad KH |
1828 | { |
1829 | val = CHAR_TABLE_REF (encoder, c); | |
1830 | if (NILP (val)) | |
1831 | return CHARSET_INVALID_CODE (charset); | |
1832 | code = XINT (val); | |
1833 | if (! CHARSET_COMPACT_CODES_P (charset)) | |
1834 | code = INDEX_TO_CODE_POINT (charset, code); | |
1835 | } | |
1836 | else | |
1837 | { | |
1838 | code = GET_TEMP_CHARSET_WORK_ENCODER (c); | |
51b59d79 | 1839 | code = INDEX_TO_CODE_POINT (charset, code); |
ecca2aad | 1840 | } |
3263d5a2 | 1841 | } |
820ee249 | 1842 | else /* method == CHARSET_METHOD_OFFSET */ |
beeedaad | 1843 | { |
58c8a77d PE |
1844 | unsigned code_index = c - CHARSET_CODE_OFFSET (charset); |
1845 | ||
1846 | code = INDEX_TO_CODE_POINT (charset, code_index); | |
3f62427c | 1847 | } |
8ac5a9cc | 1848 | |
3263d5a2 | 1849 | return code; |
4ed46869 KH |
1850 | } |
1851 | ||
4ed46869 | 1852 | |
3263d5a2 KH |
1853 | DEFUN ("decode-char", Fdecode_char, Sdecode_char, 2, 3, 0, |
1854 | doc: /* Decode the pair of CHARSET and CODE-POINT into a character. | |
1855 | Return nil if CODE-POINT is not valid in CHARSET. | |
4ed46869 | 1856 | |
3263d5a2 | 1857 | CODE-POINT may be a cons (HIGHER-16-BIT-VALUE . LOWER-16-BIT-VALUE). |
859f2b3c | 1858 | |
3263d5a2 | 1859 | Optional argument RESTRICTION specifies a way to map the pair of CCS |
d0cf2d48 | 1860 | and CODE-POINT to a character. Currently not supported and just ignored. */) |
5842a27b | 1861 | (Lisp_Object charset, Lisp_Object code_point, Lisp_Object restriction) |
4ed46869 | 1862 | { |
3263d5a2 KH |
1863 | int c, id; |
1864 | unsigned code; | |
1865 | struct charset *charsetp; | |
859f2b3c | 1866 | |
3263d5a2 | 1867 | CHECK_CHARSET_GET_ID (charset, id); |
be44ca6c | 1868 | code = cons_to_unsigned (code_point, UINT_MAX); |
3263d5a2 KH |
1869 | charsetp = CHARSET_FROM_ID (id); |
1870 | c = DECODE_CHAR (charsetp, code); | |
1871 | return (c >= 0 ? make_number (c) : Qnil); | |
4ed46869 KH |
1872 | } |
1873 | ||
859f2b3c | 1874 | |
3263d5a2 KH |
1875 | DEFUN ("encode-char", Fencode_char, Sencode_char, 2, 3, 0, |
1876 | doc: /* Encode the character CH into a code-point of CHARSET. | |
1877 | Return nil if CHARSET doesn't include CH. | |
17e7ef1b | 1878 | |
d0cf2d48 | 1879 | Optional argument RESTRICTION specifies a way to map CH to a |
3263d5a2 | 1880 | code-point in CCS. Currently not supported and just ignored. */) |
5842a27b | 1881 | (Lisp_Object ch, Lisp_Object charset, Lisp_Object restriction) |
4ed46869 | 1882 | { |
34206dd2 | 1883 | int c, id; |
3263d5a2 KH |
1884 | unsigned code; |
1885 | struct charset *charsetp; | |
046b1f03 | 1886 | |
3263d5a2 | 1887 | CHECK_CHARSET_GET_ID (charset, id); |
34206dd2 PE |
1888 | CHECK_CHARACTER (ch); |
1889 | c = XFASTINT (ch); | |
3263d5a2 | 1890 | charsetp = CHARSET_FROM_ID (id); |
34206dd2 | 1891 | code = ENCODE_CHAR (charsetp, c); |
3263d5a2 KH |
1892 | if (code == CHARSET_INVALID_CODE (charsetp)) |
1893 | return Qnil; | |
be44ca6c | 1894 | return INTEGER_TO_CONS (code); |
beeedaad KH |
1895 | } |
1896 | ||
beeedaad | 1897 | |
b121a744 KH |
1898 | DEFUN ("make-char", Fmake_char, Smake_char, 1, 5, 0, |
1899 | doc: | |
1900 | /* Return a character of CHARSET whose position codes are CODEn. | |
1901 | ||
1902 | CODE1 through CODE4 are optional, but if you don't supply sufficient | |
1903 | position codes, it is assumed that the minimum code in each dimension | |
04c2f2c5 | 1904 | is specified. */) |
5842a27b | 1905 | (Lisp_Object charset, Lisp_Object code1, Lisp_Object code2, Lisp_Object code3, Lisp_Object code4) |
beeedaad | 1906 | { |
3263d5a2 KH |
1907 | int id, dimension; |
1908 | struct charset *charsetp; | |
b121a744 KH |
1909 | unsigned code; |
1910 | int c; | |
87b089ad | 1911 | |
3263d5a2 KH |
1912 | CHECK_CHARSET_GET_ID (charset, id); |
1913 | charsetp = CHARSET_FROM_ID (id); | |
4ed46869 | 1914 | |
b121a744 KH |
1915 | dimension = CHARSET_DIMENSION (charsetp); |
1916 | if (NILP (code1)) | |
d47073ca KH |
1917 | code = (CHARSET_ASCII_COMPATIBLE_P (charsetp) |
1918 | ? 0 : CHARSET_MIN_CODE (charsetp)); | |
3263d5a2 | 1919 | else |
859f2b3c | 1920 | { |
b121a744 KH |
1921 | CHECK_NATNUM (code1); |
1922 | if (XFASTINT (code1) >= 0x100) | |
1923 | args_out_of_range (make_number (0xFF), code1); | |
1924 | code = XFASTINT (code1); | |
859f2b3c | 1925 | |
b0a1e45e | 1926 | if (dimension > 1) |
beeedaad | 1927 | { |
b121a744 | 1928 | code <<= 8; |
b0a1e45e KH |
1929 | if (NILP (code2)) |
1930 | code |= charsetp->code_space[(dimension - 2) * 4]; | |
beeedaad | 1931 | else |
b121a744 | 1932 | { |
b0a1e45e KH |
1933 | CHECK_NATNUM (code2); |
1934 | if (XFASTINT (code2) >= 0x100) | |
1935 | args_out_of_range (make_number (0xFF), code2); | |
1936 | code |= XFASTINT (code2); | |
b121a744 | 1937 | } |
99529c2c | 1938 | |
b0a1e45e | 1939 | if (dimension > 2) |
b121a744 KH |
1940 | { |
1941 | code <<= 8; | |
b0a1e45e KH |
1942 | if (NILP (code3)) |
1943 | code |= charsetp->code_space[(dimension - 3) * 4]; | |
b121a744 KH |
1944 | else |
1945 | { | |
b0a1e45e KH |
1946 | CHECK_NATNUM (code3); |
1947 | if (XFASTINT (code3) >= 0x100) | |
1948 | args_out_of_range (make_number (0xFF), code3); | |
1949 | code |= XFASTINT (code3); | |
1950 | } | |
1951 | ||
1952 | if (dimension > 3) | |
1953 | { | |
1954 | code <<= 8; | |
1955 | if (NILP (code4)) | |
1956 | code |= charsetp->code_space[0]; | |
1957 | else | |
1958 | { | |
1959 | CHECK_NATNUM (code4); | |
1960 | if (XFASTINT (code4) >= 0x100) | |
1961 | args_out_of_range (make_number (0xFF), code4); | |
1962 | code |= XFASTINT (code4); | |
1963 | } | |
b121a744 KH |
1964 | } |
1965 | } | |
beeedaad | 1966 | } |
859f2b3c | 1967 | } |
beeedaad | 1968 | |
b121a744 KH |
1969 | if (CHARSET_ISO_FINAL (charsetp) >= 0) |
1970 | code &= 0x7F7F7F7F; | |
1971 | c = DECODE_CHAR (charsetp, code); | |
1972 | if (c < 0) | |
1973 | error ("Invalid code(s)"); | |
3263d5a2 | 1974 | return make_number (c); |
4ed46869 KH |
1975 | } |
1976 | ||
beeedaad | 1977 | |
3263d5a2 KH |
1978 | /* Return the first charset in CHARSET_LIST that contains C. |
1979 | CHARSET_LIST is a list of charset IDs. If it is nil, use | |
1980 | Vcharset_ordered_list. */ | |
beeedaad | 1981 | |
3263d5a2 | 1982 | struct charset * |
971de7fb | 1983 | char_charset (int c, Lisp_Object charset_list, unsigned int *code_return) |
2e344af3 | 1984 | { |
8a1816bb KH |
1985 | int maybe_null = 0; |
1986 | ||
3263d5a2 KH |
1987 | if (NILP (charset_list)) |
1988 | charset_list = Vcharset_ordered_list; | |
8a1816bb KH |
1989 | else |
1990 | maybe_null = 1; | |
beeedaad | 1991 | |
6c652beb | 1992 | while (CONSP (charset_list)) |
2e344af3 | 1993 | { |
3263d5a2 KH |
1994 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); |
1995 | unsigned code = ENCODE_CHAR (charset, c); | |
beeedaad | 1996 | |
3263d5a2 | 1997 | if (code != CHARSET_INVALID_CODE (charset)) |
beeedaad | 1998 | { |
3263d5a2 KH |
1999 | if (code_return) |
2000 | *code_return = code; | |
2001 | return charset; | |
3f62427c | 2002 | } |
3263d5a2 | 2003 | charset_list = XCDR (charset_list); |
c0be27fd KH |
2004 | if (! maybe_null |
2005 | && c <= MAX_UNICODE_CHAR | |
2006 | && EQ (charset_list, Vcharset_non_preferred_head)) | |
6c652beb | 2007 | return CHARSET_FROM_ID (charset_unicode); |
3f62427c | 2008 | } |
8a1816bb KH |
2009 | return (maybe_null ? NULL |
2010 | : c <= MAX_5_BYTE_CHAR ? CHARSET_FROM_ID (charset_emacs) | |
6a9c90ec | 2011 | : CHARSET_FROM_ID (charset_eight_bit)); |
3f62427c KH |
2012 | } |
2013 | ||
2e344af3 | 2014 | |
3263d5a2 | 2015 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, |
3cc67a4d | 2016 | doc: |
d0cf2d48 | 2017 | /*Return list of charset and one to four position-codes of CH. |
3cc67a4d KH |
2018 | The charset is decided by the current priority order of charsets. |
2019 | A position-code is a byte value of each dimension of the code-point of | |
d0cf2d48 | 2020 | CH in the charset. */) |
5842a27b | 2021 | (Lisp_Object ch) |
4ed46869 | 2022 | { |
3263d5a2 KH |
2023 | struct charset *charset; |
2024 | int c, dimension; | |
2025 | unsigned code; | |
4ed46869 KH |
2026 | Lisp_Object val; |
2027 | ||
3263d5a2 KH |
2028 | CHECK_CHARACTER (ch); |
2029 | c = XFASTINT (ch); | |
2030 | charset = CHAR_CHARSET (c); | |
2031 | if (! charset) | |
3cc67a4d | 2032 | abort (); |
3263d5a2 KH |
2033 | code = ENCODE_CHAR (charset, c); |
2034 | if (code == CHARSET_INVALID_CODE (charset)) | |
2035 | abort (); | |
2036 | dimension = CHARSET_DIMENSION (charset); | |
3cc67a4d KH |
2037 | for (val = Qnil; dimension > 0; dimension--) |
2038 | { | |
2039 | val = Fcons (make_number (code & 0xFF), val); | |
2040 | code >>= 8; | |
2041 | } | |
3263d5a2 | 2042 | return Fcons (CHARSET_NAME (charset), val); |
4ed46869 KH |
2043 | } |
2044 | ||
740f080d | 2045 | |
4cb75c4b KH |
2046 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 2, 0, |
2047 | doc: /* Return the charset of highest priority that contains CH. | |
2048 | If optional 2nd arg RESTRICTION is non-nil, it is a list of charsets | |
2049 | from which to find the charset. It may also be a coding system. In | |
2050 | that case, find the charset from what supported by that coding system. */) | |
5842a27b | 2051 | (Lisp_Object ch, Lisp_Object restriction) |
4ed46869 | 2052 | { |
3263d5a2 | 2053 | struct charset *charset; |
4ed46869 | 2054 | |
3263d5a2 | 2055 | CHECK_CHARACTER (ch); |
4cb75c4b KH |
2056 | if (NILP (restriction)) |
2057 | charset = CHAR_CHARSET (XINT (ch)); | |
2058 | else | |
2059 | { | |
4cb75c4b KH |
2060 | if (CONSP (restriction)) |
2061 | { | |
7a84eee5 KH |
2062 | int c = XFASTINT (ch); |
2063 | ||
2064 | for (; CONSP (restriction); restriction = XCDR (restriction)) | |
4cb75c4b | 2065 | { |
f6095868 | 2066 | struct charset *rcharset; |
4cb75c4b | 2067 | |
f6095868 PE |
2068 | CHECK_CHARSET_GET_CHARSET (XCAR (restriction), rcharset); |
2069 | if (ENCODE_CHAR (rcharset, c) != CHARSET_INVALID_CODE (rcharset)) | |
7a84eee5 | 2070 | return XCAR (restriction); |
4cb75c4b | 2071 | } |
7a84eee5 | 2072 | return Qnil; |
4cb75c4b | 2073 | } |
7a84eee5 KH |
2074 | restriction = coding_system_charset_list (restriction); |
2075 | charset = char_charset (XINT (ch), restriction, NULL); | |
4cb75c4b KH |
2076 | if (! charset) |
2077 | return Qnil; | |
2078 | } | |
3263d5a2 | 2079 | return (CHARSET_NAME (charset)); |
4ed46869 KH |
2080 | } |
2081 | ||
17e7ef1b | 2082 | |
3263d5a2 KH |
2083 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
2084 | doc: /* | |
2085 | Return charset of a character in the current buffer at position POS. | |
cd1181db | 2086 | If POS is nil, it defaults to the current point. |
3263d5a2 | 2087 | If POS is out of range, the value is nil. */) |
5842a27b | 2088 | (Lisp_Object pos) |
2e344af3 | 2089 | { |
3263d5a2 KH |
2090 | Lisp_Object ch; |
2091 | struct charset *charset; | |
046b1f03 | 2092 | |
3263d5a2 KH |
2093 | ch = Fchar_after (pos); |
2094 | if (! INTEGERP (ch)) | |
2095 | return ch; | |
2096 | charset = CHAR_CHARSET (XINT (ch)); | |
2097 | return (CHARSET_NAME (charset)); | |
6ae1f27e | 2098 | } |
9036eb45 | 2099 | |
87b089ad | 2100 | |
3263d5a2 KH |
2101 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
2102 | doc: /* | |
2103 | Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR. | |
2104 | ||
2105 | ISO 2022's designation sequence (escape sequence) distinguishes charsets | |
2106 | by their DIMENSION, CHARS, and FINAL-CHAR, | |
d0cf2d48 | 2107 | whereas Emacs distinguishes them by charset symbol. |
3263d5a2 KH |
2108 | See the documentation of the function `charset-info' for the meanings of |
2109 | DIMENSION, CHARS, and FINAL-CHAR. */) | |
5842a27b | 2110 | (Lisp_Object dimension, Lisp_Object chars, Lisp_Object final_char) |
6ae1f27e | 2111 | { |
3263d5a2 | 2112 | int id; |
82215ce9 | 2113 | int chars_flag; |
a8a35e61 | 2114 | |
3263d5a2 | 2115 | check_iso_charset_parameter (dimension, chars, final_char); |
82215ce9 KH |
2116 | chars_flag = XFASTINT (chars) == 96; |
2117 | id = ISO_CHARSET_TABLE (XFASTINT (dimension), chars_flag, | |
3263d5a2 KH |
2118 | XFASTINT (final_char)); |
2119 | return (id >= 0 ? CHARSET_NAME (CHARSET_FROM_ID (id)) : Qnil); | |
046b1f03 RS |
2120 | } |
2121 | ||
87b089ad | 2122 | |
3263d5a2 KH |
2123 | DEFUN ("clear-charset-maps", Fclear_charset_maps, Sclear_charset_maps, |
2124 | 0, 0, 0, | |
2125 | doc: /* | |
ecca2aad KH |
2126 | Internal use only. |
2127 | Clear temporary charset mapping tables. | |
2128 | It should be called only from temacs invoked for dumping. */) | |
5842a27b | 2129 | (void) |
87b089ad | 2130 | { |
ecca2aad | 2131 | if (temp_charset_work) |
87b089ad | 2132 | { |
baad03f0 | 2133 | xfree (temp_charset_work); |
ecca2aad | 2134 | temp_charset_work = NULL; |
2e344af3 | 2135 | } |
2e344af3 | 2136 | |
ecca2aad KH |
2137 | if (CHAR_TABLE_P (Vchar_unify_table)) |
2138 | Foptimize_char_table (Vchar_unify_table, Qnil); | |
740f080d | 2139 | |
3263d5a2 | 2140 | return Qnil; |
740f080d KH |
2141 | } |
2142 | ||
8ddf5e57 DL |
2143 | DEFUN ("charset-priority-list", Fcharset_priority_list, |
2144 | Scharset_priority_list, 0, 1, 0, | |
2145 | doc: /* Return the list of charsets ordered by priority. | |
2146 | HIGHESTP non-nil means just return the highest priority one. */) | |
5842a27b | 2147 | (Lisp_Object highestp) |
2e344af3 | 2148 | { |
8ddf5e57 | 2149 | Lisp_Object val = Qnil, list = Vcharset_ordered_list; |
2e344af3 | 2150 | |
8ddf5e57 | 2151 | if (!NILP (highestp)) |
16fed1fc | 2152 | return CHARSET_NAME (CHARSET_FROM_ID (XINT (Fcar (list)))); |
2e344af3 | 2153 | |
8ddf5e57 | 2154 | while (!NILP (list)) |
2e344af3 | 2155 | { |
16fed1fc | 2156 | val = Fcons (CHARSET_NAME (CHARSET_FROM_ID (XINT (XCAR (list)))), val); |
8ddf5e57 | 2157 | list = XCDR (list); |
2e344af3 | 2158 | } |
8ddf5e57 | 2159 | return Fnreverse (val); |
2e344af3 KH |
2160 | } |
2161 | ||
8ddf5e57 DL |
2162 | DEFUN ("set-charset-priority", Fset_charset_priority, Sset_charset_priority, |
2163 | 1, MANY, 0, | |
2164 | doc: /* Assign higher priority to the charsets given as arguments. | |
2165 | usage: (set-charset-priority &rest charsets) */) | |
f66c7cf8 | 2166 | (ptrdiff_t nargs, Lisp_Object *args) |
4ed46869 | 2167 | { |
af7c60ca | 2168 | Lisp_Object new_head, old_list, arglist[2]; |
321c819c | 2169 | Lisp_Object list_2022, list_emacs_mule; |
f66c7cf8 | 2170 | ptrdiff_t i; |
c5101a77 | 2171 | int id; |
4ed46869 | 2172 | |
8ddf5e57 | 2173 | old_list = Fcopy_sequence (Vcharset_ordered_list); |
af7c60ca | 2174 | new_head = Qnil; |
8ddf5e57 | 2175 | for (i = 0; i < nargs; i++) |
4ed46869 | 2176 | { |
8ddf5e57 | 2177 | CHECK_CHARSET_GET_ID (args[i], id); |
af7c60ca KH |
2178 | if (! NILP (Fmemq (make_number (id), old_list))) |
2179 | { | |
2180 | old_list = Fdelq (make_number (id), old_list); | |
2181 | new_head = Fcons (make_number (id), new_head); | |
2182 | } | |
5729c92f | 2183 | } |
8ddf5e57 | 2184 | arglist[0] = Fnreverse (new_head); |
6a9c90ec | 2185 | arglist[1] = Vcharset_non_preferred_head = old_list; |
8ddf5e57 | 2186 | Vcharset_ordered_list = Fnconc (2, arglist); |
dbbb237d | 2187 | charset_ordered_list_tick++; |
5729c92f | 2188 | |
6809ca75 | 2189 | charset_unibyte = -1; |
321c819c | 2190 | for (old_list = Vcharset_ordered_list, list_2022 = list_emacs_mule = Qnil; |
d017b41e | 2191 | CONSP (old_list); old_list = XCDR (old_list)) |
5729c92f | 2192 | { |
e77415b0 | 2193 | if (! NILP (Fmemq (XCAR (old_list), Viso_2022_charset_list))) |
321c819c KH |
2194 | list_2022 = Fcons (XCAR (old_list), list_2022); |
2195 | if (! NILP (Fmemq (XCAR (old_list), Vemacs_mule_charset_list))) | |
2196 | list_emacs_mule = Fcons (XCAR (old_list), list_emacs_mule); | |
6809ca75 KH |
2197 | if (charset_unibyte < 0) |
2198 | { | |
2199 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (old_list))); | |
2200 | ||
2201 | if (CHARSET_DIMENSION (charset) == 1 | |
2202 | && CHARSET_ASCII_COMPATIBLE_P (charset) | |
2203 | && CHARSET_MAX_CHAR (charset) >= 0x80) | |
2204 | charset_unibyte = CHARSET_ID (charset); | |
2205 | } | |
4ed46869 | 2206 | } |
321c819c KH |
2207 | Viso_2022_charset_list = Fnreverse (list_2022); |
2208 | Vemacs_mule_charset_list = Fnreverse (list_emacs_mule); | |
6809ca75 KH |
2209 | if (charset_unibyte < 0) |
2210 | charset_unibyte = charset_iso_8859_1; | |
4ed46869 | 2211 | |
8ddf5e57 | 2212 | return Qnil; |
4ed46869 KH |
2213 | } |
2214 | ||
d5b33309 KH |
2215 | DEFUN ("charset-id-internal", Fcharset_id_internal, Scharset_id_internal, |
2216 | 0, 1, 0, | |
2217 | doc: /* Internal use only. | |
2218 | Return charset identification number of CHARSET. */) | |
5842a27b | 2219 | (Lisp_Object charset) |
4ed46869 | 2220 | { |
d5b33309 | 2221 | int id; |
4ed46869 | 2222 | |
d5b33309 KH |
2223 | CHECK_CHARSET_GET_ID (charset, id); |
2224 | return make_number (id); | |
4ed46869 KH |
2225 | } |
2226 | ||
7a84eee5 KH |
2227 | struct charset_sort_data |
2228 | { | |
2229 | Lisp_Object charset; | |
2230 | int id; | |
0065d054 | 2231 | ptrdiff_t priority; |
7a84eee5 KH |
2232 | }; |
2233 | ||
2234 | static int | |
2235 | charset_compare (const void *d1, const void *d2) | |
2236 | { | |
2237 | const struct charset_sort_data *data1 = d1, *data2 = d2; | |
0065d054 PE |
2238 | if (data1->priority != data2->priority) |
2239 | return data1->priority < data2->priority ? -1 : 1; | |
2240 | return 0; | |
7a84eee5 KH |
2241 | } |
2242 | ||
2243 | DEFUN ("sort-charsets", Fsort_charsets, Ssort_charsets, 1, 1, 0, | |
2244 | doc: /* Sort charset list CHARSETS by a priority of each charset. | |
2245 | Return the sorted list. CHARSETS is modified by side effects. | |
2246 | See also `charset-priority-list' and `set-charset-priority'. */) | |
2247 | (Lisp_Object charsets) | |
2248 | { | |
2249 | Lisp_Object len = Flength (charsets); | |
0065d054 PE |
2250 | ptrdiff_t n = XFASTINT (len), i, j; |
2251 | int done; | |
7a84eee5 KH |
2252 | Lisp_Object tail, elt, attrs; |
2253 | struct charset_sort_data *sort_data; | |
726929c4 | 2254 | int id, min_id = INT_MAX, max_id = INT_MIN; |
7a84eee5 KH |
2255 | USE_SAFE_ALLOCA; |
2256 | ||
2257 | if (n == 0) | |
2258 | return Qnil; | |
0065d054 | 2259 | SAFE_NALLOCA (sort_data, 1, n); |
7a84eee5 KH |
2260 | for (tail = charsets, i = 0; CONSP (tail); tail = XCDR (tail), i++) |
2261 | { | |
2262 | elt = XCAR (tail); | |
2263 | CHECK_CHARSET_GET_ATTR (elt, attrs); | |
2264 | sort_data[i].charset = elt; | |
2265 | sort_data[i].id = id = XINT (CHARSET_ATTR_ID (attrs)); | |
726929c4 | 2266 | if (id < min_id) |
7a84eee5 | 2267 | min_id = id; |
726929c4 | 2268 | if (id > max_id) |
7a84eee5 KH |
2269 | max_id = id; |
2270 | } | |
2271 | for (done = 0, tail = Vcharset_ordered_list, i = 0; | |
2272 | done < n && CONSP (tail); tail = XCDR (tail), i++) | |
2273 | { | |
2274 | elt = XCAR (tail); | |
2275 | id = XFASTINT (elt); | |
2276 | if (id >= min_id && id <= max_id) | |
2277 | for (j = 0; j < n; j++) | |
2278 | if (sort_data[j].id == id) | |
2279 | { | |
2280 | sort_data[j].priority = i; | |
2281 | done++; | |
2282 | } | |
2283 | } | |
2284 | qsort (sort_data, n, sizeof *sort_data, charset_compare); | |
2285 | for (i = 0, tail = charsets; CONSP (tail); tail = XCDR (tail), i++) | |
2286 | XSETCAR (tail, sort_data[i].charset); | |
2287 | SAFE_FREE (); | |
2288 | return charsets; | |
2289 | } | |
2290 | ||
4ed46869 | 2291 | \f |
3263d5a2 | 2292 | void |
971de7fb | 2293 | init_charset (void) |
4ed46869 | 2294 | { |
c8f94403 GM |
2295 | Lisp_Object tempdir; |
2296 | tempdir = Fexpand_file_name (build_string ("charsets"), Vdata_directory); | |
51b59d79 | 2297 | if (access (SSDATA (tempdir), 0) < 0) |
c8f94403 | 2298 | { |
63541ed8 GM |
2299 | /* This used to be non-fatal (dir_warning), but it should not |
2300 | happen, and if it does sooner or later it will cause some | |
16905bec | 2301 | obscure problem (eg bug#6401), so better abort. */ |
63541ed8 GM |
2302 | fprintf (stderr, "Error: charsets directory not found:\n\ |
2303 | %s\n\ | |
c8f94403 GM |
2304 | Emacs will not function correctly without the character map files.\n\ |
2305 | Please check your installation!\n", | |
63541ed8 GM |
2306 | SDATA (tempdir)); |
2307 | exit (1); | |
c8f94403 GM |
2308 | } |
2309 | ||
2310 | Vcharset_map_path = Fcons (tempdir, Qnil); | |
4ed46869 KH |
2311 | } |
2312 | ||
4ed46869 | 2313 | |
dfcf069d | 2314 | void |
971de7fb | 2315 | init_charset_once (void) |
4ed46869 KH |
2316 | { |
2317 | int i, j, k; | |
2318 | ||
3263d5a2 KH |
2319 | for (i = 0; i < ISO_MAX_DIMENSION; i++) |
2320 | for (j = 0; j < ISO_MAX_CHARS; j++) | |
2321 | for (k = 0; k < ISO_MAX_FINAL; k++) | |
2322 | iso_charset_table[i][j][k] = -1; | |
4ed46869 | 2323 | |
60383934 | 2324 | for (i = 0; i < 256; i++) |
b84ae584 | 2325 | emacs_mule_charset[i] = -1; |
4ed46869 | 2326 | |
7c7dceee KH |
2327 | charset_jisx0201_roman = -1; |
2328 | charset_jisx0208_1978 = -1; | |
2329 | charset_jisx0208 = -1; | |
d32320c4 | 2330 | charset_ksc5601 = -1; |
4ed46869 KH |
2331 | } |
2332 | ||
2333 | #ifdef emacs | |
2334 | ||
f701dc2a PE |
2335 | /* Allocate an initial charset table that is large enough to handle |
2336 | Emacs while it is bootstrapping. As of September 2011, the size | |
2337 | needs to be at least 166; make it a bit bigger to allow for future | |
2338 | expansion. | |
2339 | ||
2340 | Don't make the value so small that the table is reallocated during | |
2341 | bootstrapping, as glibc malloc calls larger than just under 64 KiB | |
2342 | during an initial bootstrap wreak havoc after dumping; see the | |
2343 | M_MMAP_THRESHOLD value in alloc.c, plus there is a extra overhead | |
2344 | internal to glibc malloc and perhaps to Emacs malloc debugging. */ | |
2345 | static struct charset charset_table_init[180]; | |
2346 | ||
dfcf069d | 2347 | void |
971de7fb | 2348 | syms_of_charset (void) |
4ed46869 | 2349 | { |
3263d5a2 KH |
2350 | DEFSYM (Qcharsetp, "charsetp"); |
2351 | ||
2352 | DEFSYM (Qascii, "ascii"); | |
2353 | DEFSYM (Qunicode, "unicode"); | |
6c652beb | 2354 | DEFSYM (Qemacs, "emacs"); |
2fe1edd1 | 2355 | DEFSYM (Qeight_bit, "eight-bit"); |
3263d5a2 KH |
2356 | DEFSYM (Qiso_8859_1, "iso-8859-1"); |
2357 | ||
2358 | DEFSYM (Qgl, "gl"); | |
2359 | DEFSYM (Qgr, "gr"); | |
2360 | ||
3263d5a2 KH |
2361 | staticpro (&Vcharset_ordered_list); |
2362 | Vcharset_ordered_list = Qnil; | |
2363 | ||
2364 | staticpro (&Viso_2022_charset_list); | |
2365 | Viso_2022_charset_list = Qnil; | |
2366 | ||
2367 | staticpro (&Vemacs_mule_charset_list); | |
2368 | Vemacs_mule_charset_list = Qnil; | |
2369 | ||
3943ed76 | 2370 | /* Don't staticpro them here. It's done in syms_of_fns. */ |
088dcc3e DN |
2371 | QCtest = intern_c_string (":test"); |
2372 | Qeq = intern_c_string ("eq"); | |
3943ed76 | 2373 | |
3263d5a2 | 2374 | staticpro (&Vcharset_hash_table); |
8f924df7 KH |
2375 | { |
2376 | Lisp_Object args[2]; | |
2377 | args[0] = QCtest; | |
2378 | args[1] = Qeq; | |
2379 | Vcharset_hash_table = Fmake_hash_table (2, args); | |
2380 | } | |
3263d5a2 | 2381 | |
f701dc2a PE |
2382 | charset_table = charset_table_init; |
2383 | charset_table_size = sizeof charset_table_init / sizeof *charset_table_init; | |
3263d5a2 KH |
2384 | charset_table_used = 0; |
2385 | ||
3263d5a2 KH |
2386 | defsubr (&Scharsetp); |
2387 | defsubr (&Smap_charset_chars); | |
2388 | defsubr (&Sdefine_charset_internal); | |
2389 | defsubr (&Sdefine_charset_alias); | |
3263d5a2 KH |
2390 | defsubr (&Scharset_plist); |
2391 | defsubr (&Sset_charset_plist); | |
2392 | defsubr (&Sunify_charset); | |
3fac5a51 | 2393 | defsubr (&Sget_unused_iso_final_char); |
4ed46869 KH |
2394 | defsubr (&Sdeclare_equiv_charset); |
2395 | defsubr (&Sfind_charset_region); | |
2396 | defsubr (&Sfind_charset_string); | |
3263d5a2 KH |
2397 | defsubr (&Sdecode_char); |
2398 | defsubr (&Sencode_char); | |
4ed46869 | 2399 | defsubr (&Ssplit_char); |
3263d5a2 | 2400 | defsubr (&Smake_char); |
4ed46869 | 2401 | defsubr (&Schar_charset); |
90d7b74e | 2402 | defsubr (&Scharset_after); |
4ed46869 | 2403 | defsubr (&Siso_charset); |
3263d5a2 | 2404 | defsubr (&Sclear_charset_maps); |
8ddf5e57 DL |
2405 | defsubr (&Scharset_priority_list); |
2406 | defsubr (&Sset_charset_priority); | |
d5b33309 | 2407 | defsubr (&Scharset_id_internal); |
7a84eee5 | 2408 | defsubr (&Ssort_charsets); |
3263d5a2 | 2409 | |
29208e82 | 2410 | DEFVAR_LISP ("charset-map-path", Vcharset_map_path, |
fb7ada5f | 2411 | doc: /* List of directories to search for charset map files. */); |
4beef065 | 2412 | Vcharset_map_path = Qnil; |
4ed46869 | 2413 | |
29208e82 | 2414 | DEFVAR_BOOL ("inhibit-load-charset-map", inhibit_load_charset_map, |
ecca2aad KH |
2415 | doc: /* Inhibit loading of charset maps. Used when dumping Emacs. */); |
2416 | inhibit_load_charset_map = 0; | |
2417 | ||
29208e82 | 2418 | DEFVAR_LISP ("charset-list", Vcharset_list, |
528623a0 | 2419 | doc: /* List of all charsets ever defined. */); |
3263d5a2 KH |
2420 | Vcharset_list = Qnil; |
2421 | ||
29208e82 | 2422 | DEFVAR_LISP ("current-iso639-language", Vcurrent_iso639_language, |
6a9c90ec KH |
2423 | doc: /* ISO639 language mnemonic symbol for the current language environment. |
2424 | If the current language environment is for multiple languages (e.g. "Latin-1"), | |
2425 | the value may be a list of mnemonics. */); | |
2426 | Vcurrent_iso639_language = Qnil; | |
2427 | ||
2fe1edd1 KH |
2428 | charset_ascii |
2429 | = define_charset_internal (Qascii, 1, "\x00\x7F\x00\x00\x00\x00", | |
2430 | 0, 127, 'B', -1, 0, 1, 0, 0); | |
14e3d523 KH |
2431 | charset_iso_8859_1 |
2432 | = define_charset_internal (Qiso_8859_1, 1, "\x00\xFF\x00\x00\x00\x00", | |
2433 | 0, 255, -1, -1, -1, 1, 0, 0); | |
2fe1edd1 | 2434 | charset_unicode |
73fbf2d9 | 2435 | = define_charset_internal (Qunicode, 3, "\x00\xFF\x00\xFF\x00\x10", |
2fe1edd1 | 2436 | 0, MAX_UNICODE_CHAR, -1, 0, -1, 1, 0, 0); |
6c652beb KH |
2437 | charset_emacs |
2438 | = define_charset_internal (Qemacs, 3, "\x00\xFF\x00\xFF\x00\x3F", | |
2439 | 0, MAX_5_BYTE_CHAR, -1, 0, -1, 1, 1, 0); | |
2fe1edd1 KH |
2440 | charset_eight_bit |
2441 | = define_charset_internal (Qeight_bit, 1, "\x80\xFF\x00\x00\x00\x00", | |
880820fe | 2442 | 128, 255, -1, 0, -1, 0, 1, |
2fe1edd1 | 2443 | MAX_5_BYTE_CHAR + 1); |
6809ca75 | 2444 | charset_unibyte = charset_iso_8859_1; |
4ed46869 KH |
2445 | } |
2446 | ||
2447 | #endif /* emacs */ |