Commit | Line | Data |
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3263d5a2 | 1 | /* Basic character set support. |
4ed46869 | 2 | |
ba318903 | 3 | Copyright (C) 2001-2014 Free Software Foundation, Inc. |
1f41ee56 GM |
4 | |
5 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
6 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 | |
7 | National Institute of Advanced Industrial Science and Technology (AIST) | |
8 | Registration Number H14PRO021 | |
9 | ||
10 | Copyright (C) 2003, 2004 | |
11 | National Institute of Advanced Industrial Science and Technology (AIST) | |
12 | Registration Number H13PRO009 | |
4ed46869 | 13 | |
369314dc KH |
14 | This file is part of GNU Emacs. |
15 | ||
9ec0b715 | 16 | GNU Emacs is free software: you can redistribute it and/or modify |
369314dc | 17 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
18 | the Free Software Foundation, either version 3 of the License, or |
19 | (at your option) any later version. | |
4ed46869 | 20 | |
369314dc KH |
21 | GNU Emacs is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
4ed46869 | 25 | |
369314dc | 26 | You should have received a copy of the GNU General Public License |
9ec0b715 | 27 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ed46869 | 28 | |
68c45bf0 | 29 | #include <config.h> |
68c45bf0 | 30 | |
f4b1eb36 | 31 | #include <errno.h> |
4ed46869 | 32 | #include <stdio.h> |
3263d5a2 | 33 | #include <unistd.h> |
726929c4 | 34 | #include <limits.h> |
4ed46869 | 35 | #include <sys/types.h> |
620f13b0 | 36 | #include <c-ctype.h> |
4ed46869 | 37 | #include "lisp.h" |
3263d5a2 | 38 | #include "character.h" |
4ed46869 KH |
39 | #include "charset.h" |
40 | #include "coding.h" | |
fc6b09bf | 41 | #include "disptab.h" |
3263d5a2 | 42 | #include "buffer.h" |
4ed46869 | 43 | |
04c2f2c5 | 44 | /*** GENERAL NOTES on CODED CHARACTER SETS (CHARSETS) *** |
4ed46869 | 45 | |
3263d5a2 | 46 | A coded character set ("charset" hereafter) is a meaningful |
04c2f2c5 | 47 | collection (i.e. language, culture, functionality, etc.) of |
3263d5a2 | 48 | characters. Emacs handles multiple charsets at once. In Emacs Lisp |
04c2f2c5 DL |
49 | code, a charset is represented by a symbol. In C code, a charset is |
50 | represented by its ID number or by a pointer to a struct charset. | |
4ed46869 | 51 | |
3263d5a2 KH |
52 | The actual information about each charset is stored in two places. |
53 | Lispy information is stored in the hash table Vcharset_hash_table as | |
54 | a vector (charset attributes). The other information is stored in | |
04c2f2c5 | 55 | charset_table as a struct charset. |
4ed46869 | 56 | |
3263d5a2 | 57 | */ |
4ed46869 | 58 | |
3263d5a2 KH |
59 | /* Hash table that contains attributes of each charset. Keys are |
60 | charset symbols, and values are vectors of charset attributes. */ | |
61 | Lisp_Object Vcharset_hash_table; | |
4ed46869 | 62 | |
3263d5a2 KH |
63 | /* Table of struct charset. */ |
64 | struct charset *charset_table; | |
4ed46869 | 65 | |
0065d054 | 66 | static ptrdiff_t charset_table_size; |
5af5dd92 | 67 | static int charset_table_used; |
4ed46869 | 68 | |
3263d5a2 | 69 | Lisp_Object Qcharsetp; |
4ed46869 | 70 | |
3263d5a2 KH |
71 | /* Special charset symbols. */ |
72 | Lisp_Object Qascii; | |
955cbe7b PE |
73 | static Lisp_Object Qeight_bit; |
74 | static Lisp_Object Qiso_8859_1; | |
75 | static Lisp_Object Qunicode; | |
76 | static Lisp_Object Qemacs; | |
4ed46869 | 77 | |
3263d5a2 KH |
78 | /* The corresponding charsets. */ |
79 | int charset_ascii; | |
2fe1edd1 | 80 | int charset_eight_bit; |
a2cb4e63 | 81 | static int charset_iso_8859_1; |
3263d5a2 | 82 | int charset_unicode; |
a2cb4e63 | 83 | static int charset_emacs; |
b0e3cf2b | 84 | |
7c7dceee KH |
85 | /* The other special charsets. */ |
86 | int charset_jisx0201_roman; | |
87 | int charset_jisx0208_1978; | |
88 | int charset_jisx0208; | |
d32320c4 | 89 | int charset_ksc5601; |
c1a08b4c | 90 | |
3263d5a2 | 91 | /* Value of charset attribute `charset-iso-plane'. */ |
955cbe7b | 92 | static Lisp_Object Qgl, Qgr; |
c1a08b4c | 93 | |
d1a04588 KH |
94 | /* Charset of unibyte characters. */ |
95 | int charset_unibyte; | |
4ed46869 | 96 | |
3263d5a2 KH |
97 | /* List of charsets ordered by the priority. */ |
98 | Lisp_Object Vcharset_ordered_list; | |
4ed46869 | 99 | |
6a9c90ec KH |
100 | /* Sub-list of Vcharset_ordered_list that contains all non-preferred |
101 | charsets. */ | |
102 | Lisp_Object Vcharset_non_preferred_head; | |
103 | ||
dbbb237d | 104 | /* Incremented everytime we change Vcharset_ordered_list. This is |
64165ae2 | 105 | unsigned short so that it fits in Lisp_Int and never matches |
dbbb237d KH |
106 | -1. */ |
107 | unsigned short charset_ordered_list_tick; | |
4ed46869 | 108 | |
3263d5a2 KH |
109 | /* List of iso-2022 charsets. */ |
110 | Lisp_Object Viso_2022_charset_list; | |
35e623fb | 111 | |
3263d5a2 KH |
112 | /* List of emacs-mule charsets. */ |
113 | Lisp_Object Vemacs_mule_charset_list; | |
114 | ||
b84ae584 | 115 | int emacs_mule_charset[256]; |
4ed46869 KH |
116 | |
117 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
118 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
3263d5a2 KH |
119 | int iso_charset_table[ISO_MAX_DIMENSION][ISO_MAX_CHARS][ISO_MAX_FINAL]; |
120 | ||
69f8de5b KH |
121 | #define CODE_POINT_TO_INDEX(charset, code) \ |
122 | ((charset)->code_linear_p \ | |
3c7649c1 | 123 | ? (int) ((code) - (charset)->min_code) \ |
69f8de5b KH |
124 | : (((charset)->code_space_mask[(code) >> 24] & 0x8) \ |
125 | && ((charset)->code_space_mask[((code) >> 16) & 0xFF] & 0x4) \ | |
126 | && ((charset)->code_space_mask[((code) >> 8) & 0xFF] & 0x2) \ | |
127 | && ((charset)->code_space_mask[(code) & 0xFF] & 0x1)) \ | |
3c7649c1 PE |
128 | ? (int) (((((code) >> 24) - (charset)->code_space[12]) \ |
129 | * (charset)->code_space[11]) \ | |
130 | + (((((code) >> 16) & 0xFF) - (charset)->code_space[8]) \ | |
131 | * (charset)->code_space[7]) \ | |
132 | + (((((code) >> 8) & 0xFF) - (charset)->code_space[4]) \ | |
133 | * (charset)->code_space[3]) \ | |
134 | + (((code) & 0xFF) - (charset)->code_space[0]) \ | |
135 | - ((charset)->char_index_offset)) \ | |
3263d5a2 KH |
136 | : -1) |
137 | ||
138 | ||
3c7649c1 PE |
139 | /* Return the code-point for the character index IDX in CHARSET. |
140 | IDX should be an unsigned int variable in a valid range (which is | |
141 | always in nonnegative int range too). IDX contains garbage afterwards. */ | |
3263d5a2 | 142 | |
820ee249 KH |
143 | #define INDEX_TO_CODE_POINT(charset, idx) \ |
144 | ((charset)->code_linear_p \ | |
145 | ? (idx) + (charset)->min_code \ | |
146 | : (idx += (charset)->char_index_offset, \ | |
147 | (((charset)->code_space[0] + (idx) % (charset)->code_space[2]) \ | |
148 | | (((charset)->code_space[4] \ | |
149 | + ((idx) / (charset)->code_space[3] % (charset)->code_space[6])) \ | |
150 | << 8) \ | |
151 | | (((charset)->code_space[8] \ | |
152 | + ((idx) / (charset)->code_space[7] % (charset)->code_space[10])) \ | |
153 | << 16) \ | |
154 | | (((charset)->code_space[12] + ((idx) / (charset)->code_space[11])) \ | |
155 | << 24)))) | |
4cf9710d | 156 | |
ecca2aad KH |
157 | /* Structure to hold mapping tables for a charset. Used by temacs |
158 | invoked for dumping. */ | |
8a73a704 | 159 | |
ecca2aad KH |
160 | static struct |
161 | { | |
162 | /* The current charset for which the following tables are setup. */ | |
163 | struct charset *current; | |
164 | ||
165 | /* 1 iff the following table is used for encoder. */ | |
166 | short for_encoder; | |
167 | ||
0b381c7e JB |
168 | /* When the following table is used for encoding, minimum and |
169 | maximum character of the current charset. */ | |
ecca2aad KH |
170 | int min_char, max_char; |
171 | ||
e4769531 | 172 | /* A Unicode character corresponding to the code index 0 (i.e. the |
ecca2aad | 173 | minimum code-point) of the current charset, or -1 if the code |
e4769531 | 174 | index 0 is not a Unicode character. This is checked when |
ecca2aad KH |
175 | table.encoder[CHAR] is zero. */ |
176 | int zero_index_char; | |
177 | ||
178 | union { | |
179 | /* Table mapping code-indices (not code-points) of the current | |
180 | charset to Unicode characters. If decoder[CHAR] is -1, CHAR | |
181 | doesn't belong to the current charset. */ | |
182 | int decoder[0x10000]; | |
183 | /* Table mapping Unicode characters to code-indices of the current | |
184 | charset. The first 0x10000 elements are for BMP (0..0xFFFF), | |
185 | and the last 0x10000 are for SMP (0x10000..0x1FFFF) or SIP | |
186 | (0x20000..0x2FFFF). Note that there is no charset map that | |
187 | uses both SMP and SIP. */ | |
188 | unsigned short encoder[0x20000]; | |
189 | } table; | |
190 | } *temp_charset_work; | |
191 | ||
192 | #define SET_TEMP_CHARSET_WORK_ENCODER(C, CODE) \ | |
193 | do { \ | |
194 | if ((CODE) == 0) \ | |
195 | temp_charset_work->zero_index_char = (C); \ | |
196 | else if ((C) < 0x20000) \ | |
197 | temp_charset_work->table.encoder[(C)] = (CODE); \ | |
198 | else \ | |
199 | temp_charset_work->table.encoder[(C) - 0x10000] = (CODE); \ | |
200 | } while (0) | |
201 | ||
202 | #define GET_TEMP_CHARSET_WORK_ENCODER(C) \ | |
203 | ((C) == temp_charset_work->zero_index_char ? 0 \ | |
204 | : (C) < 0x20000 ? (temp_charset_work->table.encoder[(C)] \ | |
205 | ? (int) temp_charset_work->table.encoder[(C)] : -1) \ | |
206 | : temp_charset_work->table.encoder[(C) - 0x10000] \ | |
207 | ? temp_charset_work->table.encoder[(C) - 0x10000] : -1) | |
208 | ||
209 | #define SET_TEMP_CHARSET_WORK_DECODER(C, CODE) \ | |
210 | (temp_charset_work->table.decoder[(CODE)] = (C)) | |
211 | ||
212 | #define GET_TEMP_CHARSET_WORK_DECODER(CODE) \ | |
213 | (temp_charset_work->table.decoder[(CODE)]) | |
046b1f03 | 214 | \f |
93bcb785 | 215 | |
e9ce014c KH |
216 | /* Set to 1 to warn that a charset map is loaded and thus a buffer |
217 | text and a string data may be relocated. */ | |
d5172d4f | 218 | bool charset_map_loaded; |
4ed46869 | 219 | |
e9ce014c | 220 | struct charset_map_entries |
4ed46869 | 221 | { |
e9ce014c KH |
222 | struct { |
223 | unsigned from, to; | |
224 | int c; | |
d51c0634 | 225 | } *entry; /* [0x10000] */ |
e9ce014c KH |
226 | struct charset_map_entries *next; |
227 | }; | |
228 | ||
ecca2aad KH |
229 | /* Load the mapping information of CHARSET from ENTRIES for |
230 | initializing (CONTROL_FLAG == 0), decoding (CONTROL_FLAG == 1), and | |
231 | encoding (CONTROL_FLAG == 2). | |
232 | ||
233 | If CONTROL_FLAG is 0, setup CHARSET->min_char, CHARSET->max_char, | |
234 | and CHARSET->fast_map. | |
235 | ||
236 | If CONTROL_FLAG is 1, setup the following tables according to | |
237 | CHARSET->method and inhibit_load_charset_map. | |
4cf9710d | 238 | |
ecca2aad KH |
239 | CHARSET->method | inhibit_lcm == 0 | inhibit_lcm == 1 |
240 | ----------------------+--------------------+--------------------------- | |
241 | CHARSET_METHOD_MAP | CHARSET->decoder | temp_charset_work->decoder | |
242 | ----------------------+--------------------+--------------------------- | |
243 | CHARSET_METHOD_OFFSET | Vchar_unify_table | temp_charset_work->decoder | |
8a73a704 | 244 | |
ecca2aad | 245 | If CONTROL_FLAG is 2, setup the following tables. |
93bcb785 | 246 | |
ecca2aad KH |
247 | CHARSET->method | inhibit_lcm == 0 | inhibit_lcm == 1 |
248 | ----------------------+--------------------+--------------------------- | |
249 | CHARSET_METHOD_MAP | CHARSET->encoder | temp_charset_work->encoder | |
250 | ----------------------+--------------------+-------------------------- | |
251 | CHARSET_METHOD_OFFSET | CHARSET->deunifier | temp_charset_work->encoder | |
252 | */ | |
4ed46869 | 253 | |
3263d5a2 | 254 | static void |
971de7fb | 255 | load_charset_map (struct charset *charset, struct charset_map_entries *entries, int n_entries, int control_flag) |
4ed46869 | 256 | { |
89ef49df | 257 | Lisp_Object vec IF_LINT (= Qnil), table IF_LINT (= Qnil); |
3263d5a2 | 258 | unsigned max_code = CHARSET_MAX_CODE (charset); |
d5172d4f | 259 | bool ascii_compatible_p = charset->ascii_compatible_p; |
3263d5a2 | 260 | int min_char, max_char, nonascii_min_char; |
3263d5a2 | 261 | int i; |
3263d5a2 | 262 | unsigned char *fast_map = charset->fast_map; |
99529c2c | 263 | |
e9ce014c KH |
264 | if (n_entries <= 0) |
265 | return; | |
266 | ||
ecca2aad | 267 | if (control_flag) |
8ac5a9cc | 268 | { |
ecca2aad KH |
269 | if (! inhibit_load_charset_map) |
270 | { | |
271 | if (control_flag == 1) | |
272 | { | |
273 | if (charset->method == CHARSET_METHOD_MAP) | |
274 | { | |
275 | int n = CODE_POINT_TO_INDEX (charset, max_code) + 1; | |
6662e69b | 276 | |
4939150c PE |
277 | vec = Fmake_vector (make_number (n), make_number (-1)); |
278 | set_charset_attr (charset, charset_decoder, vec); | |
ecca2aad KH |
279 | } |
280 | else | |
281 | { | |
282 | char_table_set_range (Vchar_unify_table, | |
283 | charset->min_char, charset->max_char, | |
284 | Qnil); | |
285 | } | |
286 | } | |
287 | else | |
288 | { | |
289 | table = Fmake_char_table (Qnil, Qnil); | |
4939150c PE |
290 | set_charset_attr (charset, |
291 | (charset->method == CHARSET_METHOD_MAP | |
292 | ? charset_encoder : charset_deunifier), | |
293 | table); | |
ecca2aad KH |
294 | } |
295 | } | |
296 | else | |
297 | { | |
298 | if (! temp_charset_work) | |
38182d90 | 299 | temp_charset_work = xmalloc (sizeof *temp_charset_work); |
ecca2aad KH |
300 | if (control_flag == 1) |
301 | { | |
302 | memset (temp_charset_work->table.decoder, -1, | |
303 | sizeof (int) * 0x10000); | |
ecca2aad KH |
304 | } |
305 | else | |
306 | { | |
307 | memset (temp_charset_work->table.encoder, 0, | |
308 | sizeof (unsigned short) * 0x20000); | |
309 | temp_charset_work->zero_index_char = -1; | |
310 | } | |
311 | temp_charset_work->current = charset; | |
312 | temp_charset_work->for_encoder = (control_flag == 2); | |
313 | control_flag += 2; | |
314 | } | |
3263d5a2 | 315 | charset_map_loaded = 1; |
2e344af3 | 316 | } |
6662e69b | 317 | |
e9ce014c | 318 | min_char = max_char = entries->entry[0].c; |
3263d5a2 | 319 | nonascii_min_char = MAX_CHAR; |
e9ce014c | 320 | for (i = 0; i < n_entries; i++) |
2e344af3 | 321 | { |
e9ce014c | 322 | unsigned from, to; |
3befa583 | 323 | int from_index, to_index, lim_index; |
3b4f4446 | 324 | int from_c, to_c; |
e9ce014c | 325 | int idx = i % 0x10000; |
3263d5a2 | 326 | |
e9ce014c KH |
327 | if (i > 0 && idx == 0) |
328 | entries = entries->next; | |
329 | from = entries->entry[idx].from; | |
330 | to = entries->entry[idx].to; | |
3b4f4446 KH |
331 | from_c = entries->entry[idx].c; |
332 | from_index = CODE_POINT_TO_INDEX (charset, from); | |
333 | if (from == to) | |
6662e69b | 334 | { |
3b4f4446 KH |
335 | to_index = from_index; |
336 | to_c = from_c; | |
6662e69b | 337 | } |
3b4f4446 | 338 | else |
6662e69b | 339 | { |
3b4f4446 KH |
340 | to_index = CODE_POINT_TO_INDEX (charset, to); |
341 | to_c = from_c + (to_index - from_index); | |
6662e69b | 342 | } |
3b4f4446 KH |
343 | if (from_index < 0 || to_index < 0) |
344 | continue; | |
3befa583 | 345 | lim_index = to_index + 1; |
3263d5a2 | 346 | |
ecca2aad KH |
347 | if (to_c > max_char) |
348 | max_char = to_c; | |
349 | else if (from_c < min_char) | |
350 | min_char = from_c; | |
6662e69b | 351 | |
ecca2aad KH |
352 | if (control_flag == 1) |
353 | { | |
354 | if (charset->method == CHARSET_METHOD_MAP) | |
3befa583 | 355 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
356 | ASET (vec, from_index, make_number (from_c)); |
357 | else | |
3befa583 | 358 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
359 | CHAR_TABLE_SET (Vchar_unify_table, |
360 | CHARSET_CODE_OFFSET (charset) + from_index, | |
361 | make_number (from_c)); | |
362 | } | |
363 | else if (control_flag == 2) | |
364 | { | |
365 | if (charset->method == CHARSET_METHOD_MAP | |
366 | && CHARSET_COMPACT_CODES_P (charset)) | |
3befa583 | 367 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad | 368 | { |
3c7649c1 PE |
369 | unsigned code = from_index; |
370 | code = INDEX_TO_CODE_POINT (charset, code); | |
ecca2aad KH |
371 | |
372 | if (NILP (CHAR_TABLE_REF (table, from_c))) | |
373 | CHAR_TABLE_SET (table, from_c, make_number (code)); | |
374 | } | |
375 | else | |
3befa583 | 376 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
377 | { |
378 | if (NILP (CHAR_TABLE_REF (table, from_c))) | |
379 | CHAR_TABLE_SET (table, from_c, make_number (from_index)); | |
380 | } | |
381 | } | |
382 | else if (control_flag == 3) | |
3befa583 | 383 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
384 | SET_TEMP_CHARSET_WORK_DECODER (from_c, from_index); |
385 | else if (control_flag == 4) | |
3befa583 | 386 | for (; from_index < lim_index; from_index++, from_c++) |
ecca2aad KH |
387 | SET_TEMP_CHARSET_WORK_ENCODER (from_c, from_index); |
388 | else /* control_flag == 0 */ | |
389 | { | |
3b4f4446 KH |
390 | if (ascii_compatible_p) |
391 | { | |
200fc949 | 392 | if (! ASCII_CHAR_P (from_c)) |
3b4f4446 KH |
393 | { |
394 | if (from_c < nonascii_min_char) | |
395 | nonascii_min_char = from_c; | |
396 | } | |
200fc949 | 397 | else if (! ASCII_CHAR_P (to_c)) |
3b4f4446 KH |
398 | { |
399 | nonascii_min_char = 0x80; | |
400 | } | |
401 | } | |
177c0ea7 | 402 | |
ecca2aad KH |
403 | for (; from_c <= to_c; from_c++) |
404 | CHARSET_FAST_MAP_SET (from_c, fast_map); | |
2e344af3 | 405 | } |
8ac5a9cc | 406 | } |
3263d5a2 | 407 | |
ecca2aad | 408 | if (control_flag == 0) |
4ed46869 | 409 | { |
3263d5a2 KH |
410 | CHARSET_MIN_CHAR (charset) = (ascii_compatible_p |
411 | ? nonascii_min_char : min_char); | |
412 | CHARSET_MAX_CHAR (charset) = max_char; | |
4ed46869 | 413 | } |
ecca2aad KH |
414 | else if (control_flag == 4) |
415 | { | |
416 | temp_charset_work->min_char = min_char; | |
417 | temp_charset_work->max_char = max_char; | |
418 | } | |
4ed46869 KH |
419 | } |
420 | ||
12bcae05 | 421 | |
3263d5a2 | 422 | /* Read a hexadecimal number (preceded by "0x") from the file FP while |
3b59c351 | 423 | paying attention to comment character '#'. */ |
12bcae05 | 424 | |
b0ab8123 | 425 | static unsigned |
d5172d4f | 426 | read_hex (FILE *fp, bool *eof, bool *overflow) |
12bcae05 | 427 | { |
3263d5a2 KH |
428 | int c; |
429 | unsigned n; | |
12bcae05 | 430 | |
3263d5a2 KH |
431 | while ((c = getc (fp)) != EOF) |
432 | { | |
69f8de5b | 433 | if (c == '#') |
3263d5a2 KH |
434 | { |
435 | while ((c = getc (fp)) != EOF && c != '\n'); | |
436 | } | |
437 | else if (c == '0') | |
438 | { | |
439 | if ((c = getc (fp)) == EOF || c == 'x') | |
440 | break; | |
441 | } | |
8f924df7 | 442 | } |
3263d5a2 KH |
443 | if (c == EOF) |
444 | { | |
445 | *eof = 1; | |
446 | return 0; | |
447 | } | |
3263d5a2 | 448 | n = 0; |
620f13b0 | 449 | while (c_isxdigit (c = getc (fp))) |
caeeedc1 PE |
450 | { |
451 | if (UINT_MAX >> 4 < n) | |
452 | *overflow = 1; | |
3263d5a2 | 453 | n = ((n << 4) |
caeeedc1 PE |
454 | | (c - ('0' <= c && c <= '9' ? '0' |
455 | : 'A' <= c && c <= 'F' ? 'A' - 10 | |
456 | : 'a' - 10))); | |
457 | } | |
e9ce014c KH |
458 | if (c != EOF) |
459 | ungetc (c, fp); | |
3263d5a2 KH |
460 | return n; |
461 | } | |
12bcae05 | 462 | |
3263d5a2 | 463 | /* Return a mapping vector for CHARSET loaded from MAPFILE. |
e9ce014c KH |
464 | Each line of MAPFILE has this form |
465 | 0xAAAA 0xCCCC | |
466 | where 0xAAAA is a code-point and 0xCCCC is the corresponding | |
467 | character code, or this form | |
468 | 0xAAAA-0xBBBB 0xCCCC | |
469 | where 0xAAAA and 0xBBBB are code-points specifying a range, and | |
470 | 0xCCCC is the first character code of the range. | |
4ed46869 | 471 | |
3263d5a2 KH |
472 | The returned vector has this form: |
473 | [ CODE1 CHAR1 CODE2 CHAR2 .... ] | |
e9ce014c | 474 | where CODE1 is a code-point or a cons of code-points specifying a |
dde2559c KH |
475 | range. |
476 | ||
18a10a21 JB |
477 | Note that this function uses `openp' to open MAPFILE but ignores |
478 | `file-name-handler-alist' to avoid running any Lisp code. */ | |
4ed46869 | 479 | |
e9ce014c | 480 | static void |
f4b1eb36 PE |
481 | load_charset_map_from_file (struct charset *charset, Lisp_Object mapfile, |
482 | int control_flag) | |
4ed46869 | 483 | { |
e9ce014c KH |
484 | unsigned min_code = CHARSET_MIN_CODE (charset); |
485 | unsigned max_code = CHARSET_MAX_CODE (charset); | |
3263d5a2 | 486 | int fd; |
5d1922cd | 487 | FILE *fp = NULL; |
3263d5a2 | 488 | Lisp_Object suffixes; |
e9ce014c | 489 | struct charset_map_entries *head, *entries; |
d311d28c PE |
490 | int n_entries; |
491 | ptrdiff_t count; | |
4ed46869 | 492 | |
6c6f1994 | 493 | suffixes = list2 (build_string (".map"), build_string (".TXT")); |
4ed46869 | 494 | |
2bfa3d3e | 495 | dynwind_begin (); |
5d1922cd | 496 | record_unwind_protect_ptr (fclose_ptr_unwind, &fp); |
9f62b5dd | 497 | { |
2bfa3d3e | 498 | dynwind_begin (); |
9f62b5dd BT |
499 | specbind (Qfile_name_handler_alist, Qnil); |
500 | fd = openp (Vcharset_map_path, mapfile, suffixes, NULL, Qnil, false); | |
501 | fp = fd < 0 ? 0 : fdopen (fd, "r"); | |
502 | if (!fp) | |
503 | { | |
504 | int open_errno = errno; | |
505 | emacs_close (fd); | |
506 | report_file_errno ("Loading charset map", mapfile, open_errno); | |
507 | } | |
2bfa3d3e | 508 | dynwind_end (); |
9f62b5dd | 509 | } |
4ed46869 | 510 | |
e96be6dd BT |
511 | /* Use record, as `charset_map_entries' is large (larger than |
512 | MAX_ALLOCA). */ | |
513 | head = xmalloc (sizeof *head); | |
d51c0634 | 514 | head->entry = xmalloc_atomic (0x10000 * sizeof (*head->entry)); |
a2f3eb19 CY |
515 | entries = head; |
516 | ||
e9ce014c | 517 | n_entries = 0; |
3263d5a2 KH |
518 | while (1) |
519 | { | |
caeeedc1 | 520 | unsigned from, to, c; |
e9ce014c | 521 | int idx; |
d5172d4f | 522 | bool eof = 0, overflow = 0; |
4ed46869 | 523 | |
caeeedc1 | 524 | from = read_hex (fp, &eof, &overflow); |
3263d5a2 KH |
525 | if (eof) |
526 | break; | |
e9ce014c | 527 | if (getc (fp) == '-') |
caeeedc1 | 528 | to = read_hex (fp, &eof, &overflow); |
e9ce014c KH |
529 | else |
530 | to = from; | |
caeeedc1 PE |
531 | if (eof) |
532 | break; | |
533 | c = read_hex (fp, &eof, &overflow); | |
534 | if (eof) | |
535 | break; | |
ac4137cc | 536 | |
caeeedc1 PE |
537 | if (overflow) |
538 | continue; | |
e9ce014c KH |
539 | if (from < min_code || to > max_code || from > to || c > MAX_CHAR) |
540 | continue; | |
ac4137cc | 541 | |
f4b1eb36 | 542 | if (n_entries == 0x10000) |
3263d5a2 | 543 | { |
e96be6dd | 544 | entries->next = xmalloc (sizeof *entries->next); |
d51c0634 | 545 | entries->next->entry = xmalloc_atomic (0x10000 * (sizeof *entries->next)); |
e9ce014c | 546 | entries = entries->next; |
d311d28c | 547 | n_entries = 0; |
3263d5a2 | 548 | } |
d311d28c | 549 | idx = n_entries; |
e9ce014c KH |
550 | entries->entry[idx].from = from; |
551 | entries->entry[idx].to = to; | |
552 | entries->entry[idx].c = c; | |
553 | n_entries++; | |
3263d5a2 KH |
554 | } |
555 | fclose (fp); | |
5d1922cd | 556 | fp = NULL; |
177c0ea7 | 557 | |
e9ce014c | 558 | load_charset_map (charset, head, n_entries, control_flag); |
2bfa3d3e | 559 | dynwind_end (); |
4ed46869 KH |
560 | } |
561 | ||
e9ce014c | 562 | static void |
971de7fb | 563 | load_charset_map_from_vector (struct charset *charset, Lisp_Object vec, int control_flag) |
23d2a7f1 | 564 | { |
e9ce014c KH |
565 | unsigned min_code = CHARSET_MIN_CODE (charset); |
566 | unsigned max_code = CHARSET_MAX_CODE (charset); | |
567 | struct charset_map_entries *head, *entries; | |
568 | int n_entries; | |
569 | int len = ASIZE (vec); | |
570 | int i; | |
a2f3eb19 | 571 | USE_SAFE_ALLOCA; |
23d2a7f1 | 572 | |
e9ce014c | 573 | if (len % 2 == 1) |
3263d5a2 | 574 | { |
e9ce014c KH |
575 | add_to_log ("Failure in loading charset map: %V", vec, Qnil); |
576 | return; | |
3263d5a2 | 577 | } |
35e623fb | 578 | |
a2f3eb19 CY |
579 | /* Use SAFE_ALLOCA instead of alloca, as `charset_map_entries' is |
580 | large (larger than MAX_ALLOCA). */ | |
98c6f1e3 | 581 | head = SAFE_ALLOCA (sizeof *head); |
d51c0634 | 582 | head->entry = xmalloc_atomic (0x10000 * (sizeof *head->entry)); |
a2f3eb19 | 583 | entries = head; |
72af86bd | 584 | memset (entries, 0, sizeof (struct charset_map_entries)); |
a2f3eb19 | 585 | |
e9ce014c KH |
586 | n_entries = 0; |
587 | for (i = 0; i < len; i += 2) | |
35e623fb | 588 | { |
e9ce014c KH |
589 | Lisp_Object val, val2; |
590 | unsigned from, to; | |
d311d28c | 591 | EMACS_INT c; |
e9ce014c | 592 | int idx; |
d2665018 | 593 | |
e9ce014c KH |
594 | val = AREF (vec, i); |
595 | if (CONSP (val)) | |
bbf12bb3 | 596 | { |
e9ce014c KH |
597 | val2 = XCDR (val); |
598 | val = XCAR (val); | |
e9ce014c KH |
599 | from = XFASTINT (val); |
600 | to = XFASTINT (val2); | |
bbf12bb3 | 601 | } |
e9ce014c | 602 | else |
d311d28c | 603 | from = to = XFASTINT (val); |
e9ce014c KH |
604 | val = AREF (vec, i + 1); |
605 | CHECK_NATNUM (val); | |
606 | c = XFASTINT (val); | |
76d7b829 | 607 | |
e9ce014c KH |
608 | if (from < min_code || to > max_code || from > to || c > MAX_CHAR) |
609 | continue; | |
76d7b829 | 610 | |
dcc694d7 | 611 | if (n_entries > 0 && (n_entries % 0x10000) == 0) |
e9ce014c | 612 | { |
98c6f1e3 | 613 | entries->next = SAFE_ALLOCA (sizeof *entries->next); |
e9ce014c | 614 | entries = entries->next; |
72af86bd | 615 | memset (entries, 0, sizeof (struct charset_map_entries)); |
e9ce014c KH |
616 | } |
617 | idx = n_entries % 0x10000; | |
618 | entries->entry[idx].from = from; | |
619 | entries->entry[idx].to = to; | |
620 | entries->entry[idx].c = c; | |
621 | n_entries++; | |
622 | } | |
76d7b829 | 623 | |
e9ce014c | 624 | load_charset_map (charset, head, n_entries, control_flag); |
a2f3eb19 | 625 | SAFE_FREE (); |
ac4137cc KH |
626 | } |
627 | ||
ecca2aad KH |
628 | |
629 | /* Load a mapping table for CHARSET. CONTROL-FLAG tells what kind of | |
630 | map it is (see the comment of load_charset_map for the detail). */ | |
631 | ||
3263d5a2 | 632 | static void |
971de7fb | 633 | load_charset (struct charset *charset, int control_flag) |
76d7b829 | 634 | { |
ecca2aad | 635 | Lisp_Object map; |
76d7b829 | 636 | |
ecca2aad KH |
637 | if (inhibit_load_charset_map |
638 | && temp_charset_work | |
639 | && charset == temp_charset_work->current | |
56f00ed2 | 640 | && ((control_flag == 2) == temp_charset_work->for_encoder)) |
ecca2aad KH |
641 | return; |
642 | ||
643 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) | |
644 | map = CHARSET_MAP (charset); | |
0ac2c299 PE |
645 | else |
646 | { | |
647 | if (! CHARSET_UNIFIED_P (charset)) | |
1088b922 | 648 | emacs_abort (); |
0ac2c299 PE |
649 | map = CHARSET_UNIFY_MAP (charset); |
650 | } | |
ecca2aad KH |
651 | if (STRINGP (map)) |
652 | load_charset_map_from_file (charset, map, control_flag); | |
653 | else | |
654 | load_charset_map_from_vector (charset, map, control_flag); | |
4ed46869 | 655 | } |
76d7b829 | 656 | |
3263d5a2 KH |
657 | |
658 | DEFUN ("charsetp", Fcharsetp, Scharsetp, 1, 1, 0, | |
659 | doc: /* Return non-nil if and only if OBJECT is a charset.*/) | |
5842a27b | 660 | (Lisp_Object object) |
23d2a7f1 | 661 | { |
3263d5a2 | 662 | return (CHARSETP (object) ? Qt : Qnil); |
76d7b829 KH |
663 | } |
664 | ||
4ed46869 | 665 | |
a2cb4e63 PE |
666 | static void |
667 | map_charset_for_dump (void (*c_function) (Lisp_Object, Lisp_Object), | |
668 | Lisp_Object function, Lisp_Object arg, | |
669 | unsigned int from, unsigned int to) | |
ecca2aad KH |
670 | { |
671 | int from_idx = CODE_POINT_TO_INDEX (temp_charset_work->current, from); | |
672 | int to_idx = CODE_POINT_TO_INDEX (temp_charset_work->current, to); | |
673 | Lisp_Object range; | |
674 | int c, stop; | |
675 | struct gcpro gcpro1; | |
676 | ||
677 | range = Fcons (Qnil, Qnil); | |
678 | GCPRO1 (range); | |
679 | ||
680 | c = temp_charset_work->min_char; | |
681 | stop = (temp_charset_work->max_char < 0x20000 | |
682 | ? temp_charset_work->max_char : 0xFFFF); | |
51b59d79 | 683 | |
ecca2aad KH |
684 | while (1) |
685 | { | |
f6095868 | 686 | int idx = GET_TEMP_CHARSET_WORK_ENCODER (c); |
ecca2aad | 687 | |
f6095868 | 688 | if (idx >= from_idx && idx <= to_idx) |
ecca2aad KH |
689 | { |
690 | if (NILP (XCAR (range))) | |
691 | XSETCAR (range, make_number (c)); | |
692 | } | |
693 | else if (! NILP (XCAR (range))) | |
694 | { | |
695 | XSETCDR (range, make_number (c - 1)); | |
696 | if (c_function) | |
697 | (*c_function) (arg, range); | |
698 | else | |
699 | call2 (function, range, arg); | |
700 | XSETCAR (range, Qnil); | |
701 | } | |
702 | if (c == stop) | |
703 | { | |
704 | if (c == temp_charset_work->max_char) | |
705 | { | |
706 | if (! NILP (XCAR (range))) | |
707 | { | |
708 | XSETCDR (range, make_number (c)); | |
709 | if (c_function) | |
710 | (*c_function) (arg, range); | |
711 | else | |
712 | call2 (function, range, arg); | |
713 | } | |
714 | break; | |
715 | } | |
716 | c = 0x1FFFF; | |
717 | stop = temp_charset_work->max_char; | |
718 | } | |
719 | c++; | |
720 | } | |
c542407d | 721 | UNGCPRO; |
ecca2aad KH |
722 | } |
723 | ||
4ed46869 | 724 | void |
6f704c76 DN |
725 | map_charset_chars (void (*c_function)(Lisp_Object, Lisp_Object), Lisp_Object function, |
726 | Lisp_Object arg, struct charset *charset, unsigned from, unsigned to) | |
4ed46869 | 727 | { |
3263d5a2 | 728 | Lisp_Object range; |
d5172d4f PE |
729 | bool partial = (from > CHARSET_MIN_CODE (charset) |
730 | || to < CHARSET_MAX_CODE (charset)); | |
374c5cfd | 731 | |
3263d5a2 | 732 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_OFFSET) |
4ed46869 | 733 | { |
374c5cfd KH |
734 | int from_idx = CODE_POINT_TO_INDEX (charset, from); |
735 | int to_idx = CODE_POINT_TO_INDEX (charset, to); | |
736 | int from_c = from_idx + CHARSET_CODE_OFFSET (charset); | |
737 | int to_c = to_idx + CHARSET_CODE_OFFSET (charset); | |
738 | ||
ecca2aad KH |
739 | if (CHARSET_UNIFIED_P (charset)) |
740 | { | |
741 | if (! CHAR_TABLE_P (CHARSET_DEUNIFIER (charset))) | |
742 | load_charset (charset, 2); | |
743 | if (CHAR_TABLE_P (CHARSET_DEUNIFIER (charset))) | |
744 | map_char_table_for_charset (c_function, function, | |
745 | CHARSET_DEUNIFIER (charset), arg, | |
746 | partial ? charset : NULL, from, to); | |
747 | else | |
748 | map_charset_for_dump (c_function, function, arg, from, to); | |
749 | } | |
750 | ||
374c5cfd | 751 | range = Fcons (make_number (from_c), make_number (to_c)); |
3263d5a2 | 752 | if (NILP (function)) |
5af5dd92 | 753 | (*c_function) (arg, range); |
3263d5a2 KH |
754 | else |
755 | call2 (function, range, arg); | |
c83ef371 | 756 | } |
3263d5a2 KH |
757 | else if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) |
758 | { | |
759 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
ecca2aad KH |
760 | load_charset (charset, 2); |
761 | if (CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
762 | map_char_table_for_charset (c_function, function, | |
763 | CHARSET_ENCODER (charset), arg, | |
764 | partial ? charset : NULL, from, to); | |
765 | else | |
766 | map_charset_for_dump (c_function, function, arg, from, to); | |
3263d5a2 | 767 | } |
374c5cfd | 768 | else if (CHARSET_METHOD (charset) == CHARSET_METHOD_SUBSET) |
4ed46869 | 769 | { |
374c5cfd KH |
770 | Lisp_Object subset_info; |
771 | int offset; | |
772 | ||
773 | subset_info = CHARSET_SUBSET (charset); | |
774 | charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
775 | offset = XINT (AREF (subset_info, 3)); | |
776 | from -= offset; | |
777 | if (from < XFASTINT (AREF (subset_info, 1))) | |
778 | from = XFASTINT (AREF (subset_info, 1)); | |
779 | to -= offset; | |
780 | if (to > XFASTINT (AREF (subset_info, 2))) | |
781 | to = XFASTINT (AREF (subset_info, 2)); | |
782 | map_charset_chars (c_function, function, arg, charset, from, to); | |
4ed46869 | 783 | } |
374c5cfd KH |
784 | else /* i.e. CHARSET_METHOD_SUPERSET */ |
785 | { | |
786 | Lisp_Object parents; | |
4ed46869 | 787 | |
374c5cfd KH |
788 | for (parents = CHARSET_SUPERSET (charset); CONSP (parents); |
789 | parents = XCDR (parents)) | |
bbf12bb3 | 790 | { |
374c5cfd KH |
791 | int offset; |
792 | unsigned this_from, this_to; | |
793 | ||
794 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (XCAR (parents)))); | |
795 | offset = XINT (XCDR (XCAR (parents))); | |
12b55765 KH |
796 | this_from = from > offset ? from - offset : 0; |
797 | this_to = to > offset ? to - offset : 0; | |
374c5cfd KH |
798 | if (this_from < CHARSET_MIN_CODE (charset)) |
799 | this_from = CHARSET_MIN_CODE (charset); | |
800 | if (this_to > CHARSET_MAX_CODE (charset)) | |
801 | this_to = CHARSET_MAX_CODE (charset); | |
111daccf KH |
802 | map_charset_chars (c_function, function, arg, charset, |
803 | this_from, this_to); | |
bbf12bb3 | 804 | } |
35e623fb | 805 | } |
4ed46869 KH |
806 | } |
807 | ||
374c5cfd | 808 | DEFUN ("map-charset-chars", Fmap_charset_chars, Smap_charset_chars, 2, 5, 0, |
04c2f2c5 | 809 | doc: /* Call FUNCTION for all characters in CHARSET. |
374c5cfd | 810 | FUNCTION is called with an argument RANGE and the optional 3rd |
3263d5a2 | 811 | argument ARG. |
4ed46869 | 812 | |
374c5cfd KH |
813 | RANGE is a cons (FROM . TO), where FROM and TO indicate a range of |
814 | characters contained in CHARSET. | |
4ed46869 | 815 | |
374c5cfd | 816 | The optional 4th and 5th arguments FROM-CODE and TO-CODE specify the |
72d51285 | 817 | range of code points (in CHARSET) of target characters. */) |
5842a27b | 818 | (Lisp_Object function, Lisp_Object charset, Lisp_Object arg, Lisp_Object from_code, Lisp_Object to_code) |
4ed46869 | 819 | { |
374c5cfd | 820 | struct charset *cs; |
16fed1fc | 821 | unsigned from, to; |
4ed46869 | 822 | |
374c5cfd KH |
823 | CHECK_CHARSET_GET_CHARSET (charset, cs); |
824 | if (NILP (from_code)) | |
16fed1fc | 825 | from = CHARSET_MIN_CODE (cs); |
970b7474 | 826 | else |
4ed46869 | 827 | { |
970b7474 KH |
828 | from = XINT (from_code); |
829 | if (from < CHARSET_MIN_CODE (cs)) | |
830 | from = CHARSET_MIN_CODE (cs); | |
4ed46869 | 831 | } |
374c5cfd | 832 | if (NILP (to_code)) |
970b7474 | 833 | to = CHARSET_MAX_CODE (cs); |
4ed46869 KH |
834 | else |
835 | { | |
970b7474 KH |
836 | to = XINT (to_code); |
837 | if (to > CHARSET_MAX_CODE (cs)) | |
838 | to = CHARSET_MAX_CODE (cs); | |
4ed46869 | 839 | } |
16fed1fc | 840 | map_charset_chars (NULL, function, arg, cs, from, to); |
3263d5a2 | 841 | return Qnil; |
35e623fb | 842 | } |
4ed46869 | 843 | |
4ed46869 | 844 | |
3263d5a2 KH |
845 | /* Define a charset according to the arguments. The Nth argument is |
846 | the Nth attribute of the charset (the last attribute `charset-id' | |
847 | is not included). See the docstring of `define-charset' for the | |
848 | detail. */ | |
4ed46869 | 849 | |
3263d5a2 KH |
850 | DEFUN ("define-charset-internal", Fdefine_charset_internal, |
851 | Sdefine_charset_internal, charset_arg_max, MANY, 0, | |
04c2f2c5 DL |
852 | doc: /* For internal use only. |
853 | usage: (define-charset-internal ...) */) | |
f66c7cf8 | 854 | (ptrdiff_t nargs, Lisp_Object *args) |
4ed46869 | 855 | { |
3263d5a2 KH |
856 | /* Charset attr vector. */ |
857 | Lisp_Object attrs; | |
858 | Lisp_Object val; | |
0de4bb68 | 859 | EMACS_UINT hash_code; |
3263d5a2 | 860 | struct Lisp_Hash_Table *hash_table = XHASH_TABLE (Vcharset_hash_table); |
69f8de5b | 861 | int i, j; |
3263d5a2 KH |
862 | struct charset charset; |
863 | int id; | |
864 | int dimension; | |
d5172d4f | 865 | bool new_definition_p; |
3263d5a2 KH |
866 | int nchars; |
867 | ||
868 | if (nargs != charset_arg_max) | |
869 | return Fsignal (Qwrong_number_of_arguments, | |
870 | Fcons (intern ("define-charset-internal"), | |
871 | make_number (nargs))); | |
872 | ||
873 | attrs = Fmake_vector (make_number (charset_attr_max), Qnil); | |
874 | ||
875 | CHECK_SYMBOL (args[charset_arg_name]); | |
876 | ASET (attrs, charset_name, args[charset_arg_name]); | |
877 | ||
878 | val = args[charset_arg_code_space]; | |
c032b5f8 | 879 | for (i = 0, dimension = 0, nchars = 1; ; i++) |
76d7b829 | 880 | { |
d311d28c | 881 | Lisp_Object min_byte_obj, max_byte_obj; |
3263d5a2 KH |
882 | int min_byte, max_byte; |
883 | ||
d311d28c PE |
884 | min_byte_obj = Faref (val, make_number (i * 2)); |
885 | max_byte_obj = Faref (val, make_number (i * 2 + 1)); | |
af5a5a98 | 886 | CHECK_RANGED_INTEGER (min_byte_obj, 0, 255); |
d311d28c | 887 | min_byte = XINT (min_byte_obj); |
af5a5a98 | 888 | CHECK_RANGED_INTEGER (max_byte_obj, min_byte, 255); |
d311d28c | 889 | max_byte = XINT (max_byte_obj); |
3263d5a2 KH |
890 | charset.code_space[i * 4] = min_byte; |
891 | charset.code_space[i * 4 + 1] = max_byte; | |
892 | charset.code_space[i * 4 + 2] = max_byte - min_byte + 1; | |
3263d5a2 KH |
893 | if (max_byte > 0) |
894 | dimension = i + 1; | |
c032b5f8 PE |
895 | if (i == 3) |
896 | break; | |
897 | nchars *= charset.code_space[i * 4 + 2]; | |
898 | charset.code_space[i * 4 + 3] = nchars; | |
3263d5a2 | 899 | } |
4ed46869 | 900 | |
3263d5a2 KH |
901 | val = args[charset_arg_dimension]; |
902 | if (NILP (val)) | |
903 | charset.dimension = dimension; | |
904 | else | |
4ed46869 | 905 | { |
af5a5a98 | 906 | CHECK_RANGED_INTEGER (val, 1, 4); |
3263d5a2 | 907 | charset.dimension = XINT (val); |
4ed46869 KH |
908 | } |
909 | ||
3263d5a2 KH |
910 | charset.code_linear_p |
911 | = (charset.dimension == 1 | |
912 | || (charset.code_space[2] == 256 | |
913 | && (charset.dimension == 2 | |
914 | || (charset.code_space[6] == 256 | |
915 | && (charset.dimension == 3 | |
916 | || charset.code_space[10] == 256))))); | |
917 | ||
69f8de5b | 918 | if (! charset.code_linear_p) |
4ed46869 | 919 | { |
c1ade6f7 | 920 | charset.code_space_mask = xzalloc_atomic (256); |
69f8de5b KH |
921 | for (i = 0; i < 4; i++) |
922 | for (j = charset.code_space[i * 4]; j <= charset.code_space[i * 4 + 1]; | |
923 | j++) | |
924 | charset.code_space_mask[j] |= (1 << i); | |
4ed46869 KH |
925 | } |
926 | ||
3263d5a2 | 927 | charset.iso_chars_96 = charset.code_space[2] == 96; |
4ed46869 | 928 | |
3263d5a2 KH |
929 | charset.min_code = (charset.code_space[0] |
930 | | (charset.code_space[4] << 8) | |
931 | | (charset.code_space[8] << 16) | |
3c7649c1 | 932 | | ((unsigned) charset.code_space[12] << 24)); |
3263d5a2 KH |
933 | charset.max_code = (charset.code_space[1] |
934 | | (charset.code_space[5] << 8) | |
935 | | (charset.code_space[9] << 16) | |
3c7649c1 | 936 | | ((unsigned) charset.code_space[13] << 24)); |
820ee249 | 937 | charset.char_index_offset = 0; |
8a73a704 | 938 | |
820ee249 KH |
939 | val = args[charset_arg_min_code]; |
940 | if (! NILP (val)) | |
941 | { | |
be44ca6c | 942 | unsigned code = cons_to_unsigned (val, UINT_MAX); |
fdb82f93 | 943 | |
820ee249 KH |
944 | if (code < charset.min_code |
945 | || code > charset.max_code) | |
3c7649c1 PE |
946 | args_out_of_range_3 (make_fixnum_or_float (charset.min_code), |
947 | make_fixnum_or_float (charset.max_code), val); | |
820ee249 KH |
948 | charset.char_index_offset = CODE_POINT_TO_INDEX (&charset, code); |
949 | charset.min_code = code; | |
950 | } | |
3fac5a51 | 951 | |
820ee249 KH |
952 | val = args[charset_arg_max_code]; |
953 | if (! NILP (val)) | |
3fac5a51 | 954 | { |
be44ca6c | 955 | unsigned code = cons_to_unsigned (val, UINT_MAX); |
820ee249 | 956 | |
820ee249 KH |
957 | if (code < charset.min_code |
958 | || code > charset.max_code) | |
3c7649c1 PE |
959 | args_out_of_range_3 (make_fixnum_or_float (charset.min_code), |
960 | make_fixnum_or_float (charset.max_code), val); | |
820ee249 | 961 | charset.max_code = code; |
3fac5a51 | 962 | } |
3fac5a51 | 963 | |
ecca2aad | 964 | charset.compact_codes_p = charset.max_code < 0x10000; |
4ed46869 | 965 | |
3263d5a2 KH |
966 | val = args[charset_arg_invalid_code]; |
967 | if (NILP (val)) | |
968 | { | |
969 | if (charset.min_code > 0) | |
970 | charset.invalid_code = 0; | |
bbf12bb3 KH |
971 | else |
972 | { | |
3c7649c1 | 973 | if (charset.max_code < UINT_MAX) |
3263d5a2 KH |
974 | charset.invalid_code = charset.max_code + 1; |
975 | else | |
976 | error ("Attribute :invalid-code must be specified"); | |
76d7b829 | 977 | } |
76d7b829 | 978 | } |
3263d5a2 | 979 | else |
3c7649c1 | 980 | charset.invalid_code = cons_to_unsigned (val, UINT_MAX); |
4ed46869 | 981 | |
3263d5a2 KH |
982 | val = args[charset_arg_iso_final]; |
983 | if (NILP (val)) | |
984 | charset.iso_final = -1; | |
985 | else | |
986 | { | |
987 | CHECK_NUMBER (val); | |
988 | if (XINT (val) < '0' || XINT (val) > 127) | |
c2982e87 | 989 | error ("Invalid iso-final-char: %"pI"d", XINT (val)); |
3263d5a2 KH |
990 | charset.iso_final = XINT (val); |
991 | } | |
4ed46869 | 992 | |
3263d5a2 KH |
993 | val = args[charset_arg_iso_revision]; |
994 | if (NILP (val)) | |
995 | charset.iso_revision = -1; | |
996 | else | |
4ed46869 | 997 | { |
af5a5a98 | 998 | CHECK_RANGED_INTEGER (val, -1, 63); |
3263d5a2 | 999 | charset.iso_revision = XINT (val); |
4ed46869 | 1000 | } |
4ed46869 | 1001 | |
3263d5a2 KH |
1002 | val = args[charset_arg_emacs_mule_id]; |
1003 | if (NILP (val)) | |
1004 | charset.emacs_mule_id = -1; | |
4ed46869 KH |
1005 | else |
1006 | { | |
3263d5a2 KH |
1007 | CHECK_NATNUM (val); |
1008 | if ((XINT (val) > 0 && XINT (val) <= 128) || XINT (val) >= 256) | |
c2982e87 | 1009 | error ("Invalid emacs-mule-id: %"pI"d", XINT (val)); |
3263d5a2 | 1010 | charset.emacs_mule_id = XINT (val); |
c83ef371 | 1011 | } |
f6302ac9 | 1012 | |
3263d5a2 | 1013 | charset.ascii_compatible_p = ! NILP (args[charset_arg_ascii_compatible_p]); |
1d67c29b | 1014 | |
3263d5a2 | 1015 | charset.supplementary_p = ! NILP (args[charset_arg_supplementary_p]); |
4ed46869 | 1016 | |
3263d5a2 KH |
1017 | charset.unified_p = 0; |
1018 | ||
72af86bd | 1019 | memset (charset.fast_map, 0, sizeof (charset.fast_map)); |
3263d5a2 KH |
1020 | |
1021 | if (! NILP (args[charset_arg_code_offset])) | |
1022 | { | |
1023 | val = args[charset_arg_code_offset]; | |
3c7649c1 | 1024 | CHECK_CHARACTER (val); |
3263d5a2 KH |
1025 | |
1026 | charset.method = CHARSET_METHOD_OFFSET; | |
1027 | charset.code_offset = XINT (val); | |
1028 | ||
3263d5a2 | 1029 | i = CODE_POINT_TO_INDEX (&charset, charset.max_code); |
3c7649c1 | 1030 | if (MAX_CHAR - charset.code_offset < i) |
3263d5a2 | 1031 | error ("Unsupported max char: %d", charset.max_char); |
3c7649c1 PE |
1032 | charset.max_char = i + charset.code_offset; |
1033 | i = CODE_POINT_TO_INDEX (&charset, charset.min_code); | |
1034 | charset.min_char = i + charset.code_offset; | |
3263d5a2 | 1035 | |
f148205f KH |
1036 | i = (charset.min_char >> 7) << 7; |
1037 | for (; i < 0x10000 && i <= charset.max_char; i += 128) | |
3263d5a2 | 1038 | CHARSET_FAST_MAP_SET (i, charset.fast_map); |
f148205f | 1039 | i = (i >> 12) << 12; |
3263d5a2 KH |
1040 | for (; i <= charset.max_char; i += 0x1000) |
1041 | CHARSET_FAST_MAP_SET (i, charset.fast_map); | |
3620330b KH |
1042 | if (charset.code_offset == 0 && charset.max_char >= 0x80) |
1043 | charset.ascii_compatible_p = 1; | |
3263d5a2 KH |
1044 | } |
1045 | else if (! NILP (args[charset_arg_map])) | |
1046 | { | |
1047 | val = args[charset_arg_map]; | |
1048 | ASET (attrs, charset_map, val); | |
ecca2aad | 1049 | charset.method = CHARSET_METHOD_MAP; |
3263d5a2 | 1050 | } |
374c5cfd | 1051 | else if (! NILP (args[charset_arg_subset])) |
3263d5a2 | 1052 | { |
374c5cfd KH |
1053 | Lisp_Object parent; |
1054 | Lisp_Object parent_min_code, parent_max_code, parent_code_offset; | |
1055 | struct charset *parent_charset; | |
1056 | ||
1057 | val = args[charset_arg_subset]; | |
1058 | parent = Fcar (val); | |
1059 | CHECK_CHARSET_GET_CHARSET (parent, parent_charset); | |
1060 | parent_min_code = Fnth (make_number (1), val); | |
1061 | CHECK_NATNUM (parent_min_code); | |
1062 | parent_max_code = Fnth (make_number (2), val); | |
1063 | CHECK_NATNUM (parent_max_code); | |
1064 | parent_code_offset = Fnth (make_number (3), val); | |
1065 | CHECK_NUMBER (parent_code_offset); | |
25721f5b | 1066 | val = make_uninit_vector (4); |
374c5cfd KH |
1067 | ASET (val, 0, make_number (parent_charset->id)); |
1068 | ASET (val, 1, parent_min_code); | |
1069 | ASET (val, 2, parent_max_code); | |
1070 | ASET (val, 3, parent_code_offset); | |
1071 | ASET (attrs, charset_subset, val); | |
1072 | ||
1073 | charset.method = CHARSET_METHOD_SUBSET; | |
1074 | /* Here, we just copy the parent's fast_map. It's not accurate, | |
1075 | but at least it works for quickly detecting which character | |
1076 | DOESN'T belong to this charset. */ | |
1077 | for (i = 0; i < 190; i++) | |
1078 | charset.fast_map[i] = parent_charset->fast_map[i]; | |
1079 | ||
1080 | /* We also copy these for parents. */ | |
1081 | charset.min_char = parent_charset->min_char; | |
1082 | charset.max_char = parent_charset->max_char; | |
1083 | } | |
1084 | else if (! NILP (args[charset_arg_superset])) | |
0282eb69 | 1085 | { |
374c5cfd KH |
1086 | val = args[charset_arg_superset]; |
1087 | charset.method = CHARSET_METHOD_SUPERSET; | |
3263d5a2 | 1088 | val = Fcopy_sequence (val); |
374c5cfd | 1089 | ASET (attrs, charset_superset, val); |
3263d5a2 KH |
1090 | |
1091 | charset.min_char = MAX_CHAR; | |
1092 | charset.max_char = 0; | |
1093 | for (; ! NILP (val); val = Fcdr (val)) | |
0282eb69 | 1094 | { |
3263d5a2 KH |
1095 | Lisp_Object elt, car_part, cdr_part; |
1096 | int this_id, offset; | |
1097 | struct charset *this_charset; | |
2e344af3 | 1098 | |
3263d5a2 KH |
1099 | elt = Fcar (val); |
1100 | if (CONSP (elt)) | |
2e344af3 | 1101 | { |
3263d5a2 KH |
1102 | car_part = XCAR (elt); |
1103 | cdr_part = XCDR (elt); | |
1104 | CHECK_CHARSET_GET_ID (car_part, this_id); | |
d311d28c | 1105 | CHECK_TYPE_RANGED_INTEGER (int, cdr_part); |
3263d5a2 | 1106 | offset = XINT (cdr_part); |
177c0ea7 | 1107 | } |
3263d5a2 | 1108 | else |
4ed46869 | 1109 | { |
3263d5a2 KH |
1110 | CHECK_CHARSET_GET_ID (elt, this_id); |
1111 | offset = 0; | |
4ed46869 | 1112 | } |
3263d5a2 KH |
1113 | XSETCAR (val, Fcons (make_number (this_id), make_number (offset))); |
1114 | ||
1115 | this_charset = CHARSET_FROM_ID (this_id); | |
1116 | if (charset.min_char > this_charset->min_char) | |
1117 | charset.min_char = this_charset->min_char; | |
1118 | if (charset.max_char < this_charset->max_char) | |
1119 | charset.max_char = this_charset->max_char; | |
1120 | for (i = 0; i < 190; i++) | |
1121 | charset.fast_map[i] |= this_charset->fast_map[i]; | |
0282eb69 | 1122 | } |
0282eb69 | 1123 | } |
2e344af3 | 1124 | else |
3263d5a2 | 1125 | error ("None of :code-offset, :map, :parents are specified"); |
05505664 | 1126 | |
3263d5a2 KH |
1127 | val = args[charset_arg_unify_map]; |
1128 | if (! NILP (val) && !STRINGP (val)) | |
1129 | CHECK_VECTOR (val); | |
1130 | ASET (attrs, charset_unify_map, val); | |
05505664 | 1131 | |
3263d5a2 KH |
1132 | CHECK_LIST (args[charset_arg_plist]); |
1133 | ASET (attrs, charset_plist, args[charset_arg_plist]); | |
4ed46869 | 1134 | |
3263d5a2 KH |
1135 | charset.hash_index = hash_lookup (hash_table, args[charset_arg_name], |
1136 | &hash_code); | |
1137 | if (charset.hash_index >= 0) | |
1138 | { | |
1139 | new_definition_p = 0; | |
4f65af01 | 1140 | id = XFASTINT (CHARSET_SYMBOL_ID (args[charset_arg_name])); |
e83064be | 1141 | set_hash_value_slot (hash_table, charset.hash_index, attrs); |
3263d5a2 | 1142 | } |
1a45ff10 | 1143 | else |
3263d5a2 KH |
1144 | { |
1145 | charset.hash_index = hash_put (hash_table, args[charset_arg_name], attrs, | |
1146 | hash_code); | |
1147 | if (charset_table_used == charset_table_size) | |
1148 | { | |
e097a6fa | 1149 | /* Ensure that charset IDs fit into 'int' as well as into the |
0065d054 PE |
1150 | restriction imposed by fixnums. Although the 'int' restriction |
1151 | could be removed, too much other code would need altering; for | |
1152 | example, the IDs are stuffed into struct | |
1153 | coding_system.charbuf[i] entries, which are 'int'. */ | |
1154 | int old_size = charset_table_size; | |
2dd2e622 | 1155 | ptrdiff_t new_size = old_size; |
0065d054 | 1156 | struct charset *new_table = |
2dd2e622 | 1157 | xpalloc (0, &new_size, 1, |
0065d054 PE |
1158 | min (INT_MAX, MOST_POSITIVE_FIXNUM), |
1159 | sizeof *charset_table); | |
1160 | memcpy (new_table, charset_table, old_size * sizeof *new_table); | |
2fe1edd1 | 1161 | charset_table = new_table; |
2dd2e622 | 1162 | charset_table_size = new_size; |
f701dc2a PE |
1163 | /* FIXME: This leaks memory, as the old charset_table becomes |
1164 | unreachable. If the old charset table is charset_table_init | |
1165 | then this leak is intentional; otherwise, it's unclear. | |
1166 | If the latter memory leak is intentional, a | |
0065d054 PE |
1167 | comment should be added to explain this. If not, the old |
1168 | charset_table should be freed, by passing it as the 1st argument | |
1169 | to xpalloc and removing the memcpy. */ | |
3263d5a2 KH |
1170 | } |
1171 | id = charset_table_used++; | |
3263d5a2 KH |
1172 | new_definition_p = 1; |
1173 | } | |
2e344af3 | 1174 | |
4f65af01 | 1175 | ASET (attrs, charset_id, make_number (id)); |
3263d5a2 KH |
1176 | charset.id = id; |
1177 | charset_table[id] = charset; | |
2e344af3 | 1178 | |
ecca2aad | 1179 | if (charset.method == CHARSET_METHOD_MAP) |
b8ebe9dd KH |
1180 | { |
1181 | load_charset (&charset, 0); | |
1182 | charset_table[id] = charset; | |
1183 | } | |
ecca2aad | 1184 | |
3263d5a2 | 1185 | if (charset.iso_final >= 0) |
4ed46869 | 1186 | { |
3263d5a2 KH |
1187 | ISO_CHARSET_TABLE (charset.dimension, charset.iso_chars_96, |
1188 | charset.iso_final) = id; | |
1189 | if (new_definition_p) | |
1190 | Viso_2022_charset_list = nconc2 (Viso_2022_charset_list, | |
6c6f1994 | 1191 | list1 (make_number (id))); |
7c7dceee KH |
1192 | if (ISO_CHARSET_TABLE (1, 0, 'J') == id) |
1193 | charset_jisx0201_roman = id; | |
1194 | else if (ISO_CHARSET_TABLE (2, 0, '@') == id) | |
1195 | charset_jisx0208_1978 = id; | |
1196 | else if (ISO_CHARSET_TABLE (2, 0, 'B') == id) | |
1197 | charset_jisx0208 = id; | |
d32320c4 KH |
1198 | else if (ISO_CHARSET_TABLE (2, 0, 'C') == id) |
1199 | charset_ksc5601 = id; | |
4ed46869 | 1200 | } |
d0cf2d48 | 1201 | |
3263d5a2 | 1202 | if (charset.emacs_mule_id >= 0) |
4ed46869 | 1203 | { |
b84ae584 | 1204 | emacs_mule_charset[charset.emacs_mule_id] = id; |
4f65af01 KH |
1205 | if (charset.emacs_mule_id < 0xA0) |
1206 | emacs_mule_bytes[charset.emacs_mule_id] = charset.dimension + 1; | |
3b1ae89b KH |
1207 | else |
1208 | emacs_mule_bytes[charset.emacs_mule_id] = charset.dimension + 2; | |
3263d5a2 KH |
1209 | if (new_definition_p) |
1210 | Vemacs_mule_charset_list = nconc2 (Vemacs_mule_charset_list, | |
6c6f1994 | 1211 | list1 (make_number (id))); |
4ed46869 KH |
1212 | } |
1213 | ||
3263d5a2 KH |
1214 | if (new_definition_p) |
1215 | { | |
1216 | Vcharset_list = Fcons (args[charset_arg_name], Vcharset_list); | |
8055c66a KH |
1217 | if (charset.supplementary_p) |
1218 | Vcharset_ordered_list = nconc2 (Vcharset_ordered_list, | |
6c6f1994 | 1219 | list1 (make_number (id))); |
8055c66a | 1220 | else |
880820fe KH |
1221 | { |
1222 | Lisp_Object tail; | |
1223 | ||
1224 | for (tail = Vcharset_ordered_list; CONSP (tail); tail = XCDR (tail)) | |
1225 | { | |
1226 | struct charset *cs = CHARSET_FROM_ID (XINT (XCAR (tail))); | |
1227 | ||
1228 | if (cs->supplementary_p) | |
1229 | break; | |
1230 | } | |
1231 | if (EQ (tail, Vcharset_ordered_list)) | |
1232 | Vcharset_ordered_list = Fcons (make_number (id), | |
1233 | Vcharset_ordered_list); | |
1234 | else if (NILP (tail)) | |
1235 | Vcharset_ordered_list = nconc2 (Vcharset_ordered_list, | |
6c6f1994 | 1236 | list1 (make_number (id))); |
880820fe KH |
1237 | else |
1238 | { | |
1239 | val = Fcons (XCAR (tail), XCDR (tail)); | |
1240 | XSETCDR (tail, val); | |
1241 | XSETCAR (tail, make_number (id)); | |
1242 | } | |
1243 | } | |
dbbb237d | 1244 | charset_ordered_list_tick++; |
3263d5a2 | 1245 | } |
4ed46869 | 1246 | |
3263d5a2 | 1247 | return Qnil; |
4ed46869 KH |
1248 | } |
1249 | ||
2fe1edd1 KH |
1250 | |
1251 | /* Same as Fdefine_charset_internal but arguments are more convenient | |
1252 | to call from C (typically in syms_of_charset). This can define a | |
1253 | charset of `offset' method only. Return the ID of the new | |
1254 | charset. */ | |
1255 | ||
1256 | static int | |
dd4c5104 DN |
1257 | define_charset_internal (Lisp_Object name, |
1258 | int dimension, | |
dfb6afda | 1259 | const char *code_space_chars, |
dd4c5104 DN |
1260 | unsigned min_code, unsigned max_code, |
1261 | int iso_final, int iso_revision, int emacs_mule_id, | |
d5172d4f | 1262 | bool ascii_compatible, bool supplementary, |
dd4c5104 | 1263 | int code_offset) |
2fe1edd1 | 1264 | { |
dfb6afda | 1265 | const unsigned char *code_space = (const unsigned char *) code_space_chars; |
2fe1edd1 | 1266 | Lisp_Object args[charset_arg_max]; |
2fe1edd1 KH |
1267 | Lisp_Object val; |
1268 | int i; | |
1269 | ||
1270 | args[charset_arg_name] = name; | |
1271 | args[charset_arg_dimension] = make_number (dimension); | |
25721f5b | 1272 | val = make_uninit_vector (8); |
2fe1edd1 KH |
1273 | for (i = 0; i < 8; i++) |
1274 | ASET (val, i, make_number (code_space[i])); | |
1275 | args[charset_arg_code_space] = val; | |
1276 | args[charset_arg_min_code] = make_number (min_code); | |
1277 | args[charset_arg_max_code] = make_number (max_code); | |
1278 | args[charset_arg_iso_final] | |
1279 | = (iso_final < 0 ? Qnil : make_number (iso_final)); | |
1280 | args[charset_arg_iso_revision] = make_number (iso_revision); | |
1281 | args[charset_arg_emacs_mule_id] | |
1282 | = (emacs_mule_id < 0 ? Qnil : make_number (emacs_mule_id)); | |
1283 | args[charset_arg_ascii_compatible_p] = ascii_compatible ? Qt : Qnil; | |
7acf89e6 | 1284 | args[charset_arg_supplementary_p] = supplementary ? Qt : Qnil; |
2fe1edd1 KH |
1285 | args[charset_arg_invalid_code] = Qnil; |
1286 | args[charset_arg_code_offset] = make_number (code_offset); | |
1287 | args[charset_arg_map] = Qnil; | |
1288 | args[charset_arg_subset] = Qnil; | |
1289 | args[charset_arg_superset] = Qnil; | |
1290 | args[charset_arg_unify_map] = Qnil; | |
1291 | ||
694b6c97 | 1292 | args[charset_arg_plist] = |
3438fe21 | 1293 | listn (CONSTYPE_HEAP, 14, |
694b6c97 DA |
1294 | intern_c_string (":name"), |
1295 | args[charset_arg_name], | |
1296 | intern_c_string (":dimension"), | |
1297 | args[charset_arg_dimension], | |
1298 | intern_c_string (":code-space"), | |
1299 | args[charset_arg_code_space], | |
1300 | intern_c_string (":iso-final-char"), | |
1301 | args[charset_arg_iso_final], | |
1302 | intern_c_string (":emacs-mule-id"), | |
1303 | args[charset_arg_emacs_mule_id], | |
1304 | intern_c_string (":ascii-compatible-p"), | |
1305 | args[charset_arg_ascii_compatible_p], | |
1306 | intern_c_string (":code-offset"), | |
1307 | args[charset_arg_code_offset]); | |
2fe1edd1 KH |
1308 | Fdefine_charset_internal (charset_arg_max, args); |
1309 | ||
1310 | return XINT (CHARSET_SYMBOL_ID (name)); | |
1311 | } | |
1312 | ||
1313 | ||
3263d5a2 KH |
1314 | DEFUN ("define-charset-alias", Fdefine_charset_alias, |
1315 | Sdefine_charset_alias, 2, 2, 0, | |
1316 | doc: /* Define ALIAS as an alias for charset CHARSET. */) | |
5842a27b | 1317 | (Lisp_Object alias, Lisp_Object charset) |
4ed46869 | 1318 | { |
3263d5a2 KH |
1319 | Lisp_Object attr; |
1320 | ||
1321 | CHECK_CHARSET_GET_ATTR (charset, attr); | |
1322 | Fputhash (alias, attr, Vcharset_hash_table); | |
528623a0 | 1323 | Vcharset_list = Fcons (alias, Vcharset_list); |
3263d5a2 KH |
1324 | return Qnil; |
1325 | } | |
4ed46869 | 1326 | |
4ed46869 | 1327 | |
3263d5a2 | 1328 | DEFUN ("charset-plist", Fcharset_plist, Scharset_plist, 1, 1, 0, |
56a46d1d | 1329 | doc: /* Return the property list of CHARSET. */) |
5842a27b | 1330 | (Lisp_Object charset) |
3263d5a2 KH |
1331 | { |
1332 | Lisp_Object attrs; | |
1333 | ||
1334 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
1335 | return CHARSET_ATTR_PLIST (attrs); | |
1336 | } | |
1337 | ||
1338 | ||
1339 | DEFUN ("set-charset-plist", Fset_charset_plist, Sset_charset_plist, 2, 2, 0, | |
1340 | doc: /* Set CHARSET's property list to PLIST. */) | |
5842a27b | 1341 | (Lisp_Object charset, Lisp_Object plist) |
3263d5a2 KH |
1342 | { |
1343 | Lisp_Object attrs; | |
1344 | ||
1345 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
4939150c | 1346 | ASET (attrs, charset_plist, plist); |
3263d5a2 KH |
1347 | return plist; |
1348 | } | |
1349 | ||
1350 | ||
dbbb237d | 1351 | DEFUN ("unify-charset", Funify_charset, Sunify_charset, 1, 3, 0, |
56a46d1d DL |
1352 | doc: /* Unify characters of CHARSET with Unicode. |
1353 | This means reading the relevant file and installing the table defined | |
dbbb237d KH |
1354 | by CHARSET's `:unify-map' property. |
1355 | ||
64165ae2 DL |
1356 | Optional second arg UNIFY-MAP is a file name string or a vector. It has |
1357 | the same meaning as the `:unify-map' attribute in the function | |
dbbb237d KH |
1358 | `define-charset' (which see). |
1359 | ||
1360 | Optional third argument DEUNIFY, if non-nil, means to de-unify CHARSET. */) | |
5842a27b | 1361 | (Lisp_Object charset, Lisp_Object unify_map, Lisp_Object deunify) |
8a73a704 | 1362 | { |
3263d5a2 KH |
1363 | int id; |
1364 | struct charset *cs; | |
8f924df7 | 1365 | |
3263d5a2 KH |
1366 | CHECK_CHARSET_GET_ID (charset, id); |
1367 | cs = CHARSET_FROM_ID (id); | |
dbbb237d KH |
1368 | if (NILP (deunify) |
1369 | ? CHARSET_UNIFIED_P (cs) && ! NILP (CHARSET_DEUNIFIER (cs)) | |
1370 | : ! CHARSET_UNIFIED_P (cs)) | |
3263d5a2 | 1371 | return Qnil; |
dbbb237d | 1372 | |
3263d5a2 | 1373 | CHARSET_UNIFIED_P (cs) = 0; |
dbbb237d KH |
1374 | if (NILP (deunify)) |
1375 | { | |
ecca2aad KH |
1376 | if (CHARSET_METHOD (cs) != CHARSET_METHOD_OFFSET |
1377 | || CHARSET_CODE_OFFSET (cs) < 0x110000) | |
8f924df7 | 1378 | error ("Can't unify charset: %s", SDATA (SYMBOL_NAME (charset))); |
dbbb237d KH |
1379 | if (NILP (unify_map)) |
1380 | unify_map = CHARSET_UNIFY_MAP (cs); | |
dbbb237d | 1381 | else |
ecca2aad KH |
1382 | { |
1383 | if (! STRINGP (unify_map) && ! VECTORP (unify_map)) | |
1384 | signal_error ("Bad unify-map", unify_map); | |
4939150c | 1385 | set_charset_attr (cs, charset_unify_map, unify_map); |
ecca2aad KH |
1386 | } |
1387 | if (NILP (Vchar_unify_table)) | |
1388 | Vchar_unify_table = Fmake_char_table (Qnil, Qnil); | |
1389 | char_table_set_range (Vchar_unify_table, | |
1390 | cs->min_char, cs->max_char, charset); | |
dbbb237d KH |
1391 | CHARSET_UNIFIED_P (cs) = 1; |
1392 | } | |
1393 | else if (CHAR_TABLE_P (Vchar_unify_table)) | |
1394 | { | |
3c7649c1 PE |
1395 | unsigned min_code = CHARSET_MIN_CODE (cs); |
1396 | unsigned max_code = CHARSET_MAX_CODE (cs); | |
dbbb237d KH |
1397 | int min_char = DECODE_CHAR (cs, min_code); |
1398 | int max_char = DECODE_CHAR (cs, max_code); | |
8f924df7 | 1399 | |
dbbb237d KH |
1400 | char_table_set_range (Vchar_unify_table, min_char, max_char, Qnil); |
1401 | } | |
8f924df7 | 1402 | |
3263d5a2 | 1403 | return Qnil; |
8a73a704 KH |
1404 | } |
1405 | ||
3fac5a51 KH |
1406 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
1407 | Sget_unused_iso_final_char, 2, 2, 0, | |
3263d5a2 | 1408 | doc: /* |
d0cf2d48 | 1409 | Return an unused ISO final char for a charset of DIMENSION and CHARS. |
fdb82f93 PJ |
1410 | DIMENSION is the number of bytes to represent a character: 1 or 2. |
1411 | CHARS is the number of characters in a dimension: 94 or 96. | |
1412 | ||
1413 | This final char is for private use, thus the range is `0' (48) .. `?' (63). | |
1721b6af | 1414 | If there's no unused final char for the specified kind of charset, |
fdb82f93 | 1415 | return nil. */) |
5842a27b | 1416 | (Lisp_Object dimension, Lisp_Object chars) |
3fac5a51 KH |
1417 | { |
1418 | int final_char; | |
1419 | ||
b7826503 PJ |
1420 | CHECK_NUMBER (dimension); |
1421 | CHECK_NUMBER (chars); | |
3263d5a2 KH |
1422 | if (XINT (dimension) != 1 && XINT (dimension) != 2 && XINT (dimension) != 3) |
1423 | args_out_of_range_3 (dimension, make_number (1), make_number (3)); | |
3fac5a51 | 1424 | if (XINT (chars) != 94 && XINT (chars) != 96) |
3263d5a2 | 1425 | args_out_of_range_3 (chars, make_number (94), make_number (96)); |
3fac5a51 | 1426 | for (final_char = '0'; final_char <= '?'; final_char++) |
3263d5a2 KH |
1427 | if (ISO_CHARSET_TABLE (XINT (dimension), XINT (chars), final_char) < 0) |
1428 | break; | |
3fac5a51 KH |
1429 | return (final_char <= '?' ? make_number (final_char) : Qnil); |
1430 | } | |
1431 | ||
3263d5a2 | 1432 | static void |
971de7fb | 1433 | check_iso_charset_parameter (Lisp_Object dimension, Lisp_Object chars, Lisp_Object final_char) |
4ed46869 | 1434 | { |
3263d5a2 KH |
1435 | CHECK_NATNUM (dimension); |
1436 | CHECK_NATNUM (chars); | |
e6c3da20 | 1437 | CHECK_CHARACTER (final_char); |
4ed46869 | 1438 | |
3263d5a2 | 1439 | if (XINT (dimension) > 3) |
c2982e87 | 1440 | error ("Invalid DIMENSION %"pI"d, it should be 1, 2, or 3", |
5fdb398c | 1441 | XINT (dimension)); |
4ed46869 | 1442 | if (XINT (chars) != 94 && XINT (chars) != 96) |
c2982e87 | 1443 | error ("Invalid CHARS %"pI"d, it should be 94 or 96", XINT (chars)); |
3263d5a2 | 1444 | if (XINT (final_char) < '0' || XINT (final_char) > '~') |
e6c3da20 EZ |
1445 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", |
1446 | (int)XINT (final_char)); | |
3263d5a2 KH |
1447 | } |
1448 | ||
1449 | ||
1450 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, | |
1451 | 4, 4, 0, | |
cefd8c4f KH |
1452 | doc: /* Declare an equivalent charset for ISO-2022 decoding. |
1453 | ||
1454 | On decoding by an ISO-2022 base coding system, when a charset | |
1455 | specified by DIMENSION, CHARS, and FINAL-CHAR is designated, behave as | |
1456 | if CHARSET is designated instead. */) | |
5842a27b | 1457 | (Lisp_Object dimension, Lisp_Object chars, Lisp_Object final_char, Lisp_Object charset) |
3263d5a2 KH |
1458 | { |
1459 | int id; | |
d5172d4f | 1460 | bool chars_flag; |
4ed46869 | 1461 | |
3263d5a2 KH |
1462 | CHECK_CHARSET_GET_ID (charset, id); |
1463 | check_iso_charset_parameter (dimension, chars, final_char); | |
82215ce9 KH |
1464 | chars_flag = XINT (chars) == 96; |
1465 | ISO_CHARSET_TABLE (XINT (dimension), chars_flag, XINT (final_char)) = id; | |
4ed46869 KH |
1466 | return Qnil; |
1467 | } | |
1468 | ||
3263d5a2 | 1469 | |
2e344af3 KH |
1470 | /* Return information about charsets in the text at PTR of NBYTES |
1471 | bytes, which are NCHARS characters. The value is: | |
f6302ac9 | 1472 | |
cfe34140 | 1473 | 0: Each character is represented by one byte. This is always |
3263d5a2 KH |
1474 | true for a unibyte string. For a multibyte string, true if |
1475 | it contains only ASCII characters. | |
1476 | ||
28c026cd DL |
1477 | 1: No charsets other than ascii, control-1, and latin-1 are |
1478 | found. | |
1d67c29b | 1479 | |
3263d5a2 KH |
1480 | 2: Otherwise. |
1481 | */ | |
4ed46869 KH |
1482 | |
1483 | int | |
971de7fb | 1484 | string_xstring_p (Lisp_Object string) |
4ed46869 | 1485 | { |
8f924df7 KH |
1486 | const unsigned char *p = SDATA (string); |
1487 | const unsigned char *endp = p + SBYTES (string); | |
3263d5a2 | 1488 | |
8f924df7 | 1489 | if (SCHARS (string) == SBYTES (string)) |
3263d5a2 KH |
1490 | return 0; |
1491 | ||
3263d5a2 | 1492 | while (p < endp) |
0282eb69 | 1493 | { |
3263d5a2 | 1494 | int c = STRING_CHAR_ADVANCE (p); |
2e344af3 | 1495 | |
3cc67a4d | 1496 | if (c >= 0x100) |
3263d5a2 | 1497 | return 2; |
0282eb69 | 1498 | } |
3263d5a2 KH |
1499 | return 1; |
1500 | } | |
05505664 | 1501 | |
05505664 | 1502 | |
3263d5a2 | 1503 | /* Find charsets in the string at PTR of NCHARS and NBYTES. |
4ed46869 | 1504 | |
3cc67a4d KH |
1505 | CHARSETS is a vector. If Nth element is non-nil, it means the |
1506 | charset whose id is N is already found. | |
2e344af3 | 1507 | |
3263d5a2 | 1508 | It may lookup a translation table TABLE if supplied. */ |
2e344af3 | 1509 | |
3263d5a2 | 1510 | static void |
d5172d4f PE |
1511 | find_charsets_in_text (const unsigned char *ptr, ptrdiff_t nchars, |
1512 | ptrdiff_t nbytes, Lisp_Object charsets, | |
1513 | Lisp_Object table, bool multibyte) | |
3263d5a2 | 1514 | { |
dbbb237d | 1515 | const unsigned char *pend = ptr + nbytes; |
3263d5a2 KH |
1516 | |
1517 | if (nchars == nbytes) | |
3263d5a2 | 1518 | { |
3cc67a4d KH |
1519 | if (multibyte) |
1520 | ASET (charsets, charset_ascii, Qt); | |
1521 | else | |
1522 | while (ptr < pend) | |
1523 | { | |
1524 | int c = *ptr++; | |
1525 | ||
1526 | if (!NILP (table)) | |
1527 | c = translate_char (table, c); | |
200fc949 | 1528 | if (ASCII_CHAR_P (c)) |
3cc67a4d KH |
1529 | ASET (charsets, charset_ascii, Qt); |
1530 | else | |
1531 | ASET (charsets, charset_eight_bit, Qt); | |
1532 | } | |
1533 | } | |
1534 | else | |
1535 | { | |
1536 | while (ptr < pend) | |
3263d5a2 | 1537 | { |
3cc67a4d KH |
1538 | int c = STRING_CHAR_ADVANCE (ptr); |
1539 | struct charset *charset; | |
3263d5a2 | 1540 | |
3cc67a4d KH |
1541 | if (!NILP (table)) |
1542 | c = translate_char (table, c); | |
1543 | charset = CHAR_CHARSET (c); | |
1544 | ASET (charsets, CHARSET_ID (charset), Qt); | |
4ed46869 | 1545 | } |
4ed46869 | 1546 | } |
4ed46869 KH |
1547 | } |
1548 | ||
1549 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, | |
23d2a7f1 | 1550 | 2, 3, 0, |
fdb82f93 PJ |
1551 | doc: /* Return a list of charsets in the region between BEG and END. |
1552 | BEG and END are buffer positions. | |
1553 | Optional arg TABLE if non-nil is a translation table to look up. | |
1554 | ||
fdb82f93 PJ |
1555 | If the current buffer is unibyte, the returned list may contain |
1556 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) | |
5842a27b | 1557 | (Lisp_Object beg, Lisp_Object end, Lisp_Object table) |
4ed46869 | 1558 | { |
3263d5a2 | 1559 | Lisp_Object charsets; |
d311d28c | 1560 | ptrdiff_t from, from_byte, to, stop, stop_byte; |
42ca828e | 1561 | int i; |
4ed46869 | 1562 | Lisp_Object val; |
d5172d4f | 1563 | bool multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters)); |
4ed46869 KH |
1564 | |
1565 | validate_region (&beg, &end); | |
1566 | from = XFASTINT (beg); | |
1567 | stop = to = XFASTINT (end); | |
6ae1f27e | 1568 | |
4ed46869 | 1569 | if (from < GPT && GPT < to) |
6ae1f27e RS |
1570 | { |
1571 | stop = GPT; | |
1572 | stop_byte = GPT_BYTE; | |
1573 | } | |
1574 | else | |
1575 | stop_byte = CHAR_TO_BYTE (stop); | |
1576 | ||
1577 | from_byte = CHAR_TO_BYTE (from); | |
1578 | ||
3263d5a2 | 1579 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
4ed46869 KH |
1580 | while (1) |
1581 | { | |
3263d5a2 | 1582 | find_charsets_in_text (BYTE_POS_ADDR (from_byte), stop - from, |
3cc67a4d KH |
1583 | stop_byte - from_byte, charsets, table, |
1584 | multibyte); | |
4ed46869 | 1585 | if (stop < to) |
6ae1f27e RS |
1586 | { |
1587 | from = stop, from_byte = stop_byte; | |
1588 | stop = to, stop_byte = CHAR_TO_BYTE (stop); | |
1589 | } | |
4ed46869 KH |
1590 | else |
1591 | break; | |
1592 | } | |
6ae1f27e | 1593 | |
4ed46869 | 1594 | val = Qnil; |
3263d5a2 | 1595 | for (i = charset_table_used - 1; i >= 0; i--) |
3cc67a4d | 1596 | if (!NILP (AREF (charsets, i))) |
3263d5a2 | 1597 | val = Fcons (CHARSET_NAME (charset_table + i), val); |
4ed46869 KH |
1598 | return val; |
1599 | } | |
1600 | ||
1601 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, | |
23d2a7f1 | 1602 | 1, 2, 0, |
fdb82f93 PJ |
1603 | doc: /* Return a list of charsets in STR. |
1604 | Optional arg TABLE if non-nil is a translation table to look up. | |
1605 | ||
fdb82f93 | 1606 | If STR is unibyte, the returned list may contain |
3263d5a2 | 1607 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) |
5842a27b | 1608 | (Lisp_Object str, Lisp_Object table) |
4ed46869 | 1609 | { |
3263d5a2 | 1610 | Lisp_Object charsets; |
4ed46869 KH |
1611 | int i; |
1612 | Lisp_Object val; | |
1613 | ||
b7826503 | 1614 | CHECK_STRING (str); |
87b089ad | 1615 | |
3263d5a2 | 1616 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
8f924df7 | 1617 | find_charsets_in_text (SDATA (str), SCHARS (str), SBYTES (str), |
3cc67a4d KH |
1618 | charsets, table, |
1619 | STRING_MULTIBYTE (str)); | |
4ed46869 | 1620 | val = Qnil; |
3263d5a2 | 1621 | for (i = charset_table_used - 1; i >= 0; i--) |
3cc67a4d | 1622 | if (!NILP (AREF (charsets, i))) |
3263d5a2 | 1623 | val = Fcons (CHARSET_NAME (charset_table + i), val); |
4ed46869 KH |
1624 | return val; |
1625 | } | |
2e344af3 | 1626 | |
4ed46869 | 1627 | \f |
3263d5a2 | 1628 | |
ecca2aad KH |
1629 | /* Return a unified character code for C (>= 0x110000). VAL is a |
1630 | value of Vchar_unify_table for C; i.e. it is nil, an integer, or a | |
1631 | charset symbol. */ | |
41c8bfcf | 1632 | static int |
971de7fb | 1633 | maybe_unify_char (int c, Lisp_Object val) |
ecca2aad KH |
1634 | { |
1635 | struct charset *charset; | |
1636 | ||
1637 | if (INTEGERP (val)) | |
ccd9a01a | 1638 | return XFASTINT (val); |
ecca2aad KH |
1639 | if (NILP (val)) |
1640 | return c; | |
1641 | ||
1642 | CHECK_CHARSET_GET_CHARSET (val, charset); | |
291d430f | 1643 | #ifdef REL_ALLOC |
efc00ab1 | 1644 | /* The call to load_charset below can allocate memory, which screws |
291d430f EZ |
1645 | callers of this function through STRING_CHAR_* macros that hold C |
1646 | pointers to buffer text, if REL_ALLOC is used. */ | |
1647 | r_alloc_inhibit_buffer_relocation (1); | |
1648 | #endif | |
ecca2aad KH |
1649 | load_charset (charset, 1); |
1650 | if (! inhibit_load_charset_map) | |
1651 | { | |
1652 | val = CHAR_TABLE_REF (Vchar_unify_table, c); | |
1653 | if (! NILP (val)) | |
ccd9a01a | 1654 | c = XFASTINT (val); |
ecca2aad KH |
1655 | } |
1656 | else | |
1657 | { | |
1658 | int code_index = c - CHARSET_CODE_OFFSET (charset); | |
1659 | int unified = GET_TEMP_CHARSET_WORK_DECODER (code_index); | |
1660 | ||
1661 | if (unified > 0) | |
1662 | c = unified; | |
1663 | } | |
291d430f EZ |
1664 | #ifdef REL_ALLOC |
1665 | r_alloc_inhibit_buffer_relocation (0); | |
1666 | #endif | |
ecca2aad KH |
1667 | return c; |
1668 | } | |
1669 | ||
1670 | ||
bbd240ce | 1671 | /* Return a character corresponding to the code-point CODE of |
3263d5a2 KH |
1672 | CHARSET. */ |
1673 | ||
1674 | int | |
971de7fb | 1675 | decode_char (struct charset *charset, unsigned int code) |
4ed46869 | 1676 | { |
3263d5a2 KH |
1677 | int c, char_index; |
1678 | enum charset_method method = CHARSET_METHOD (charset); | |
ac4137cc | 1679 | |
3263d5a2 KH |
1680 | if (code < CHARSET_MIN_CODE (charset) || code > CHARSET_MAX_CODE (charset)) |
1681 | return -1; | |
4ed46869 | 1682 | |
374c5cfd | 1683 | if (method == CHARSET_METHOD_SUBSET) |
2e344af3 | 1684 | { |
374c5cfd KH |
1685 | Lisp_Object subset_info; |
1686 | ||
1687 | subset_info = CHARSET_SUBSET (charset); | |
1688 | charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
1689 | code -= XINT (AREF (subset_info, 3)); | |
1690 | if (code < XFASTINT (AREF (subset_info, 1)) | |
1691 | || code > XFASTINT (AREF (subset_info, 2))) | |
1692 | c = -1; | |
1693 | else | |
1694 | c = DECODE_CHAR (charset, code); | |
2e344af3 | 1695 | } |
374c5cfd | 1696 | else if (method == CHARSET_METHOD_SUPERSET) |
2e344af3 | 1697 | { |
3263d5a2 | 1698 | Lisp_Object parents; |
4ed46869 | 1699 | |
374c5cfd | 1700 | parents = CHARSET_SUPERSET (charset); |
3263d5a2 KH |
1701 | c = -1; |
1702 | for (; CONSP (parents); parents = XCDR (parents)) | |
1703 | { | |
1704 | int id = XINT (XCAR (XCAR (parents))); | |
1705 | int code_offset = XINT (XCDR (XCAR (parents))); | |
374c5cfd | 1706 | unsigned this_code = code - code_offset; |
4ed46869 | 1707 | |
3263d5a2 KH |
1708 | charset = CHARSET_FROM_ID (id); |
1709 | if ((c = DECODE_CHAR (charset, this_code)) >= 0) | |
1710 | break; | |
1711 | } | |
1712 | } | |
1713 | else | |
ac4137cc | 1714 | { |
3263d5a2 | 1715 | char_index = CODE_POINT_TO_INDEX (charset, code); |
69f8de5b KH |
1716 | if (char_index < 0) |
1717 | return -1; | |
4ed46869 | 1718 | |
3263d5a2 | 1719 | if (method == CHARSET_METHOD_MAP) |
ac4137cc | 1720 | { |
3263d5a2 | 1721 | Lisp_Object decoder; |
4ed46869 | 1722 | |
3263d5a2 KH |
1723 | decoder = CHARSET_DECODER (charset); |
1724 | if (! VECTORP (decoder)) | |
ecca2aad KH |
1725 | { |
1726 | load_charset (charset, 1); | |
1727 | decoder = CHARSET_DECODER (charset); | |
1728 | } | |
1729 | if (VECTORP (decoder)) | |
1730 | c = XINT (AREF (decoder, char_index)); | |
1731 | else | |
1732 | c = GET_TEMP_CHARSET_WORK_DECODER (char_index); | |
ac4137cc | 1733 | } |
ecca2aad | 1734 | else /* method == CHARSET_METHOD_OFFSET */ |
ac4137cc | 1735 | { |
3263d5a2 | 1736 | c = char_index + CHARSET_CODE_OFFSET (charset); |
ecca2aad | 1737 | if (CHARSET_UNIFIED_P (charset) |
41c8bfcf PE |
1738 | && MAX_UNICODE_CHAR < c && c <= MAX_5_BYTE_CHAR) |
1739 | { | |
1740 | /* Unify C with a Unicode character if possible. */ | |
1741 | Lisp_Object val = CHAR_TABLE_REF (Vchar_unify_table, c); | |
1742 | c = maybe_unify_char (c, val); | |
1743 | } | |
ac4137cc KH |
1744 | } |
1745 | } | |
4ed46869 | 1746 | |
3263d5a2 | 1747 | return c; |
90d7b74e KH |
1748 | } |
1749 | ||
374c5cfd KH |
1750 | /* Variable used temporarily by the macro ENCODE_CHAR. */ |
1751 | Lisp_Object charset_work; | |
4ed46869 | 1752 | |
d5172d4f | 1753 | /* Return a code-point of C in CHARSET. If C doesn't belong to |
28c026cd DL |
1754 | CHARSET, return CHARSET_INVALID_CODE (CHARSET). If STRICT is true, |
1755 | use CHARSET's strict_max_char instead of max_char. */ | |
4ed46869 | 1756 | |
3263d5a2 | 1757 | unsigned |
971de7fb | 1758 | encode_char (struct charset *charset, int c) |
9d3d8cba | 1759 | { |
3263d5a2 KH |
1760 | unsigned code; |
1761 | enum charset_method method = CHARSET_METHOD (charset); | |
9d3d8cba | 1762 | |
3263d5a2 | 1763 | if (CHARSET_UNIFIED_P (charset)) |
ac4137cc | 1764 | { |
6809ca75 | 1765 | Lisp_Object deunifier; |
ecca2aad | 1766 | int code_index = -1; |
4ed46869 | 1767 | |
3263d5a2 KH |
1768 | deunifier = CHARSET_DEUNIFIER (charset); |
1769 | if (! CHAR_TABLE_P (deunifier)) | |
ac4137cc | 1770 | { |
ecca2aad | 1771 | load_charset (charset, 2); |
3263d5a2 | 1772 | deunifier = CHARSET_DEUNIFIER (charset); |
ac4137cc | 1773 | } |
ecca2aad KH |
1774 | if (CHAR_TABLE_P (deunifier)) |
1775 | { | |
1776 | Lisp_Object deunified = CHAR_TABLE_REF (deunifier, c); | |
1777 | ||
1778 | if (INTEGERP (deunified)) | |
1779 | code_index = XINT (deunified); | |
1780 | } | |
1781 | else | |
1782 | { | |
1783 | code_index = GET_TEMP_CHARSET_WORK_ENCODER (c); | |
1784 | } | |
1785 | if (code_index >= 0) | |
1786 | c = CHARSET_CODE_OFFSET (charset) + code_index; | |
ac4137cc | 1787 | } |
9d3d8cba | 1788 | |
374c5cfd KH |
1789 | if (method == CHARSET_METHOD_SUBSET) |
1790 | { | |
1791 | Lisp_Object subset_info; | |
1792 | struct charset *this_charset; | |
1793 | ||
1794 | subset_info = CHARSET_SUBSET (charset); | |
1795 | this_charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
1796 | code = ENCODE_CHAR (this_charset, c); | |
1797 | if (code == CHARSET_INVALID_CODE (this_charset) | |
1798 | || code < XFASTINT (AREF (subset_info, 1)) | |
1799 | || code > XFASTINT (AREF (subset_info, 2))) | |
1800 | return CHARSET_INVALID_CODE (charset); | |
1801 | code += XINT (AREF (subset_info, 3)); | |
1802 | return code; | |
1803 | } | |
9d3d8cba | 1804 | |
374c5cfd | 1805 | if (method == CHARSET_METHOD_SUPERSET) |
859f2b3c | 1806 | { |
3263d5a2 | 1807 | Lisp_Object parents; |
d2665018 | 1808 | |
374c5cfd | 1809 | parents = CHARSET_SUPERSET (charset); |
3263d5a2 | 1810 | for (; CONSP (parents); parents = XCDR (parents)) |
beeedaad | 1811 | { |
3263d5a2 KH |
1812 | int id = XINT (XCAR (XCAR (parents))); |
1813 | int code_offset = XINT (XCDR (XCAR (parents))); | |
1814 | struct charset *this_charset = CHARSET_FROM_ID (id); | |
d2665018 | 1815 | |
3263d5a2 | 1816 | code = ENCODE_CHAR (this_charset, c); |
dbbb237d KH |
1817 | if (code != CHARSET_INVALID_CODE (this_charset)) |
1818 | return code + code_offset; | |
beeedaad | 1819 | } |
3263d5a2 KH |
1820 | return CHARSET_INVALID_CODE (charset); |
1821 | } | |
1bcc1567 | 1822 | |
15c85a88 KH |
1823 | if (! CHARSET_FAST_MAP_REF ((c), charset->fast_map) |
1824 | || c < CHARSET_MIN_CHAR (charset) || c > CHARSET_MAX_CHAR (charset)) | |
1825 | return CHARSET_INVALID_CODE (charset); | |
1bcc1567 | 1826 | |
3263d5a2 | 1827 | if (method == CHARSET_METHOD_MAP) |
3f62427c | 1828 | { |
3263d5a2 | 1829 | Lisp_Object encoder; |
beeedaad | 1830 | Lisp_Object val; |
9b6a601f | 1831 | |
3263d5a2 KH |
1832 | encoder = CHARSET_ENCODER (charset); |
1833 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
b8ebe9dd KH |
1834 | { |
1835 | load_charset (charset, 2); | |
1836 | encoder = CHARSET_ENCODER (charset); | |
1837 | } | |
1838 | if (CHAR_TABLE_P (encoder)) | |
ecca2aad KH |
1839 | { |
1840 | val = CHAR_TABLE_REF (encoder, c); | |
1841 | if (NILP (val)) | |
1842 | return CHARSET_INVALID_CODE (charset); | |
1843 | code = XINT (val); | |
1844 | if (! CHARSET_COMPACT_CODES_P (charset)) | |
1845 | code = INDEX_TO_CODE_POINT (charset, code); | |
1846 | } | |
1847 | else | |
1848 | { | |
1849 | code = GET_TEMP_CHARSET_WORK_ENCODER (c); | |
51b59d79 | 1850 | code = INDEX_TO_CODE_POINT (charset, code); |
ecca2aad | 1851 | } |
3263d5a2 | 1852 | } |
820ee249 | 1853 | else /* method == CHARSET_METHOD_OFFSET */ |
beeedaad | 1854 | { |
58c8a77d PE |
1855 | unsigned code_index = c - CHARSET_CODE_OFFSET (charset); |
1856 | ||
1857 | code = INDEX_TO_CODE_POINT (charset, code_index); | |
3f62427c | 1858 | } |
8ac5a9cc | 1859 | |
3263d5a2 | 1860 | return code; |
4ed46869 KH |
1861 | } |
1862 | ||
4ed46869 | 1863 | |
3263d5a2 KH |
1864 | DEFUN ("decode-char", Fdecode_char, Sdecode_char, 2, 3, 0, |
1865 | doc: /* Decode the pair of CHARSET and CODE-POINT into a character. | |
1866 | Return nil if CODE-POINT is not valid in CHARSET. | |
4ed46869 | 1867 | |
328a8179 | 1868 | CODE-POINT may be a cons (HIGHER-16-BIT-VALUE . LOWER-16-BIT-VALUE). */) |
5842a27b | 1869 | (Lisp_Object charset, Lisp_Object code_point, Lisp_Object restriction) |
4ed46869 | 1870 | { |
3263d5a2 KH |
1871 | int c, id; |
1872 | unsigned code; | |
1873 | struct charset *charsetp; | |
859f2b3c | 1874 | |
3263d5a2 | 1875 | CHECK_CHARSET_GET_ID (charset, id); |
be44ca6c | 1876 | code = cons_to_unsigned (code_point, UINT_MAX); |
3263d5a2 KH |
1877 | charsetp = CHARSET_FROM_ID (id); |
1878 | c = DECODE_CHAR (charsetp, code); | |
1879 | return (c >= 0 ? make_number (c) : Qnil); | |
4ed46869 KH |
1880 | } |
1881 | ||
859f2b3c | 1882 | |
3263d5a2 KH |
1883 | DEFUN ("encode-char", Fencode_char, Sencode_char, 2, 3, 0, |
1884 | doc: /* Encode the character CH into a code-point of CHARSET. | |
328a8179 | 1885 | Return nil if CHARSET doesn't include CH. */) |
5842a27b | 1886 | (Lisp_Object ch, Lisp_Object charset, Lisp_Object restriction) |
4ed46869 | 1887 | { |
34206dd2 | 1888 | int c, id; |
3263d5a2 KH |
1889 | unsigned code; |
1890 | struct charset *charsetp; | |
046b1f03 | 1891 | |
3263d5a2 | 1892 | CHECK_CHARSET_GET_ID (charset, id); |
34206dd2 PE |
1893 | CHECK_CHARACTER (ch); |
1894 | c = XFASTINT (ch); | |
3263d5a2 | 1895 | charsetp = CHARSET_FROM_ID (id); |
34206dd2 | 1896 | code = ENCODE_CHAR (charsetp, c); |
3263d5a2 KH |
1897 | if (code == CHARSET_INVALID_CODE (charsetp)) |
1898 | return Qnil; | |
be44ca6c | 1899 | return INTEGER_TO_CONS (code); |
beeedaad KH |
1900 | } |
1901 | ||
beeedaad | 1902 | |
b121a744 KH |
1903 | DEFUN ("make-char", Fmake_char, Smake_char, 1, 5, 0, |
1904 | doc: | |
1905 | /* Return a character of CHARSET whose position codes are CODEn. | |
1906 | ||
1907 | CODE1 through CODE4 are optional, but if you don't supply sufficient | |
1908 | position codes, it is assumed that the minimum code in each dimension | |
04c2f2c5 | 1909 | is specified. */) |
5842a27b | 1910 | (Lisp_Object charset, Lisp_Object code1, Lisp_Object code2, Lisp_Object code3, Lisp_Object code4) |
beeedaad | 1911 | { |
3263d5a2 KH |
1912 | int id, dimension; |
1913 | struct charset *charsetp; | |
b121a744 KH |
1914 | unsigned code; |
1915 | int c; | |
87b089ad | 1916 | |
3263d5a2 KH |
1917 | CHECK_CHARSET_GET_ID (charset, id); |
1918 | charsetp = CHARSET_FROM_ID (id); | |
4ed46869 | 1919 | |
b121a744 KH |
1920 | dimension = CHARSET_DIMENSION (charsetp); |
1921 | if (NILP (code1)) | |
d47073ca KH |
1922 | code = (CHARSET_ASCII_COMPATIBLE_P (charsetp) |
1923 | ? 0 : CHARSET_MIN_CODE (charsetp)); | |
3263d5a2 | 1924 | else |
859f2b3c | 1925 | { |
b121a744 KH |
1926 | CHECK_NATNUM (code1); |
1927 | if (XFASTINT (code1) >= 0x100) | |
1928 | args_out_of_range (make_number (0xFF), code1); | |
1929 | code = XFASTINT (code1); | |
859f2b3c | 1930 | |
b0a1e45e | 1931 | if (dimension > 1) |
beeedaad | 1932 | { |
b121a744 | 1933 | code <<= 8; |
b0a1e45e KH |
1934 | if (NILP (code2)) |
1935 | code |= charsetp->code_space[(dimension - 2) * 4]; | |
beeedaad | 1936 | else |
b121a744 | 1937 | { |
b0a1e45e KH |
1938 | CHECK_NATNUM (code2); |
1939 | if (XFASTINT (code2) >= 0x100) | |
1940 | args_out_of_range (make_number (0xFF), code2); | |
1941 | code |= XFASTINT (code2); | |
b121a744 | 1942 | } |
99529c2c | 1943 | |
b0a1e45e | 1944 | if (dimension > 2) |
b121a744 KH |
1945 | { |
1946 | code <<= 8; | |
b0a1e45e KH |
1947 | if (NILP (code3)) |
1948 | code |= charsetp->code_space[(dimension - 3) * 4]; | |
b121a744 KH |
1949 | else |
1950 | { | |
b0a1e45e KH |
1951 | CHECK_NATNUM (code3); |
1952 | if (XFASTINT (code3) >= 0x100) | |
1953 | args_out_of_range (make_number (0xFF), code3); | |
1954 | code |= XFASTINT (code3); | |
1955 | } | |
1956 | ||
1957 | if (dimension > 3) | |
1958 | { | |
1959 | code <<= 8; | |
1960 | if (NILP (code4)) | |
1961 | code |= charsetp->code_space[0]; | |
1962 | else | |
1963 | { | |
1964 | CHECK_NATNUM (code4); | |
1965 | if (XFASTINT (code4) >= 0x100) | |
1966 | args_out_of_range (make_number (0xFF), code4); | |
1967 | code |= XFASTINT (code4); | |
1968 | } | |
b121a744 KH |
1969 | } |
1970 | } | |
beeedaad | 1971 | } |
859f2b3c | 1972 | } |
beeedaad | 1973 | |
b121a744 KH |
1974 | if (CHARSET_ISO_FINAL (charsetp) >= 0) |
1975 | code &= 0x7F7F7F7F; | |
1976 | c = DECODE_CHAR (charsetp, code); | |
1977 | if (c < 0) | |
1978 | error ("Invalid code(s)"); | |
3263d5a2 | 1979 | return make_number (c); |
4ed46869 KH |
1980 | } |
1981 | ||
beeedaad | 1982 | |
3263d5a2 KH |
1983 | /* Return the first charset in CHARSET_LIST that contains C. |
1984 | CHARSET_LIST is a list of charset IDs. If it is nil, use | |
1985 | Vcharset_ordered_list. */ | |
beeedaad | 1986 | |
3263d5a2 | 1987 | struct charset * |
971de7fb | 1988 | char_charset (int c, Lisp_Object charset_list, unsigned int *code_return) |
2e344af3 | 1989 | { |
d5172d4f | 1990 | bool maybe_null = 0; |
8a1816bb | 1991 | |
3263d5a2 KH |
1992 | if (NILP (charset_list)) |
1993 | charset_list = Vcharset_ordered_list; | |
8a1816bb KH |
1994 | else |
1995 | maybe_null = 1; | |
beeedaad | 1996 | |
6c652beb | 1997 | while (CONSP (charset_list)) |
2e344af3 | 1998 | { |
3263d5a2 KH |
1999 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); |
2000 | unsigned code = ENCODE_CHAR (charset, c); | |
beeedaad | 2001 | |
3263d5a2 | 2002 | if (code != CHARSET_INVALID_CODE (charset)) |
beeedaad | 2003 | { |
3263d5a2 KH |
2004 | if (code_return) |
2005 | *code_return = code; | |
2006 | return charset; | |
3f62427c | 2007 | } |
3263d5a2 | 2008 | charset_list = XCDR (charset_list); |
c0be27fd KH |
2009 | if (! maybe_null |
2010 | && c <= MAX_UNICODE_CHAR | |
2011 | && EQ (charset_list, Vcharset_non_preferred_head)) | |
6c652beb | 2012 | return CHARSET_FROM_ID (charset_unicode); |
3f62427c | 2013 | } |
8a1816bb KH |
2014 | return (maybe_null ? NULL |
2015 | : c <= MAX_5_BYTE_CHAR ? CHARSET_FROM_ID (charset_emacs) | |
6a9c90ec | 2016 | : CHARSET_FROM_ID (charset_eight_bit)); |
3f62427c KH |
2017 | } |
2018 | ||
2e344af3 | 2019 | |
3263d5a2 | 2020 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, |
3cc67a4d | 2021 | doc: |
d0cf2d48 | 2022 | /*Return list of charset and one to four position-codes of CH. |
3cc67a4d KH |
2023 | The charset is decided by the current priority order of charsets. |
2024 | A position-code is a byte value of each dimension of the code-point of | |
d0cf2d48 | 2025 | CH in the charset. */) |
5842a27b | 2026 | (Lisp_Object ch) |
4ed46869 | 2027 | { |
3263d5a2 KH |
2028 | struct charset *charset; |
2029 | int c, dimension; | |
2030 | unsigned code; | |
4ed46869 KH |
2031 | Lisp_Object val; |
2032 | ||
3263d5a2 KH |
2033 | CHECK_CHARACTER (ch); |
2034 | c = XFASTINT (ch); | |
2035 | charset = CHAR_CHARSET (c); | |
2036 | if (! charset) | |
1088b922 | 2037 | emacs_abort (); |
3263d5a2 KH |
2038 | code = ENCODE_CHAR (charset, c); |
2039 | if (code == CHARSET_INVALID_CODE (charset)) | |
1088b922 | 2040 | emacs_abort (); |
3263d5a2 | 2041 | dimension = CHARSET_DIMENSION (charset); |
3cc67a4d KH |
2042 | for (val = Qnil; dimension > 0; dimension--) |
2043 | { | |
2044 | val = Fcons (make_number (code & 0xFF), val); | |
2045 | code >>= 8; | |
2046 | } | |
3263d5a2 | 2047 | return Fcons (CHARSET_NAME (charset), val); |
4ed46869 KH |
2048 | } |
2049 | ||
740f080d | 2050 | |
4cb75c4b KH |
2051 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 2, 0, |
2052 | doc: /* Return the charset of highest priority that contains CH. | |
15c6d837 XF |
2053 | ASCII characters are an exception: for them, this function always |
2054 | returns `ascii'. | |
4cb75c4b KH |
2055 | If optional 2nd arg RESTRICTION is non-nil, it is a list of charsets |
2056 | from which to find the charset. It may also be a coding system. In | |
2057 | that case, find the charset from what supported by that coding system. */) | |
5842a27b | 2058 | (Lisp_Object ch, Lisp_Object restriction) |
4ed46869 | 2059 | { |
3263d5a2 | 2060 | struct charset *charset; |
4ed46869 | 2061 | |
3263d5a2 | 2062 | CHECK_CHARACTER (ch); |
4cb75c4b KH |
2063 | if (NILP (restriction)) |
2064 | charset = CHAR_CHARSET (XINT (ch)); | |
2065 | else | |
2066 | { | |
4cb75c4b KH |
2067 | if (CONSP (restriction)) |
2068 | { | |
7a84eee5 KH |
2069 | int c = XFASTINT (ch); |
2070 | ||
2071 | for (; CONSP (restriction); restriction = XCDR (restriction)) | |
4cb75c4b | 2072 | { |
f6095868 | 2073 | struct charset *rcharset; |
4cb75c4b | 2074 | |
f6095868 PE |
2075 | CHECK_CHARSET_GET_CHARSET (XCAR (restriction), rcharset); |
2076 | if (ENCODE_CHAR (rcharset, c) != CHARSET_INVALID_CODE (rcharset)) | |
7a84eee5 | 2077 | return XCAR (restriction); |
4cb75c4b | 2078 | } |
7a84eee5 | 2079 | return Qnil; |
4cb75c4b | 2080 | } |
7a84eee5 KH |
2081 | restriction = coding_system_charset_list (restriction); |
2082 | charset = char_charset (XINT (ch), restriction, NULL); | |
4cb75c4b KH |
2083 | if (! charset) |
2084 | return Qnil; | |
2085 | } | |
3263d5a2 | 2086 | return (CHARSET_NAME (charset)); |
4ed46869 KH |
2087 | } |
2088 | ||
17e7ef1b | 2089 | |
3263d5a2 KH |
2090 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
2091 | doc: /* | |
2092 | Return charset of a character in the current buffer at position POS. | |
cd1181db | 2093 | If POS is nil, it defaults to the current point. |
3263d5a2 | 2094 | If POS is out of range, the value is nil. */) |
5842a27b | 2095 | (Lisp_Object pos) |
2e344af3 | 2096 | { |
3263d5a2 KH |
2097 | Lisp_Object ch; |
2098 | struct charset *charset; | |
046b1f03 | 2099 | |
3263d5a2 KH |
2100 | ch = Fchar_after (pos); |
2101 | if (! INTEGERP (ch)) | |
2102 | return ch; | |
2103 | charset = CHAR_CHARSET (XINT (ch)); | |
2104 | return (CHARSET_NAME (charset)); | |
6ae1f27e | 2105 | } |
9036eb45 | 2106 | |
87b089ad | 2107 | |
3263d5a2 KH |
2108 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
2109 | doc: /* | |
2110 | Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR. | |
2111 | ||
2112 | ISO 2022's designation sequence (escape sequence) distinguishes charsets | |
2113 | by their DIMENSION, CHARS, and FINAL-CHAR, | |
d0cf2d48 | 2114 | whereas Emacs distinguishes them by charset symbol. |
3263d5a2 KH |
2115 | See the documentation of the function `charset-info' for the meanings of |
2116 | DIMENSION, CHARS, and FINAL-CHAR. */) | |
5842a27b | 2117 | (Lisp_Object dimension, Lisp_Object chars, Lisp_Object final_char) |
6ae1f27e | 2118 | { |
3263d5a2 | 2119 | int id; |
d5172d4f | 2120 | bool chars_flag; |
a8a35e61 | 2121 | |
3263d5a2 | 2122 | check_iso_charset_parameter (dimension, chars, final_char); |
82215ce9 KH |
2123 | chars_flag = XFASTINT (chars) == 96; |
2124 | id = ISO_CHARSET_TABLE (XFASTINT (dimension), chars_flag, | |
3263d5a2 KH |
2125 | XFASTINT (final_char)); |
2126 | return (id >= 0 ? CHARSET_NAME (CHARSET_FROM_ID (id)) : Qnil); | |
046b1f03 RS |
2127 | } |
2128 | ||
87b089ad | 2129 | |
3263d5a2 KH |
2130 | DEFUN ("clear-charset-maps", Fclear_charset_maps, Sclear_charset_maps, |
2131 | 0, 0, 0, | |
2132 | doc: /* | |
ecca2aad KH |
2133 | Internal use only. |
2134 | Clear temporary charset mapping tables. | |
2135 | It should be called only from temacs invoked for dumping. */) | |
5842a27b | 2136 | (void) |
87b089ad | 2137 | { |
ecca2aad | 2138 | if (temp_charset_work) |
87b089ad | 2139 | { |
baad03f0 | 2140 | xfree (temp_charset_work); |
ecca2aad | 2141 | temp_charset_work = NULL; |
2e344af3 | 2142 | } |
2e344af3 | 2143 | |
ecca2aad KH |
2144 | if (CHAR_TABLE_P (Vchar_unify_table)) |
2145 | Foptimize_char_table (Vchar_unify_table, Qnil); | |
740f080d | 2146 | |
3263d5a2 | 2147 | return Qnil; |
740f080d KH |
2148 | } |
2149 | ||
8ddf5e57 DL |
2150 | DEFUN ("charset-priority-list", Fcharset_priority_list, |
2151 | Scharset_priority_list, 0, 1, 0, | |
2152 | doc: /* Return the list of charsets ordered by priority. | |
2153 | HIGHESTP non-nil means just return the highest priority one. */) | |
5842a27b | 2154 | (Lisp_Object highestp) |
2e344af3 | 2155 | { |
8ddf5e57 | 2156 | Lisp_Object val = Qnil, list = Vcharset_ordered_list; |
2e344af3 | 2157 | |
8ddf5e57 | 2158 | if (!NILP (highestp)) |
16fed1fc | 2159 | return CHARSET_NAME (CHARSET_FROM_ID (XINT (Fcar (list)))); |
2e344af3 | 2160 | |
8ddf5e57 | 2161 | while (!NILP (list)) |
2e344af3 | 2162 | { |
16fed1fc | 2163 | val = Fcons (CHARSET_NAME (CHARSET_FROM_ID (XINT (XCAR (list)))), val); |
8ddf5e57 | 2164 | list = XCDR (list); |
2e344af3 | 2165 | } |
8ddf5e57 | 2166 | return Fnreverse (val); |
2e344af3 KH |
2167 | } |
2168 | ||
8ddf5e57 DL |
2169 | DEFUN ("set-charset-priority", Fset_charset_priority, Sset_charset_priority, |
2170 | 1, MANY, 0, | |
2171 | doc: /* Assign higher priority to the charsets given as arguments. | |
2172 | usage: (set-charset-priority &rest charsets) */) | |
f66c7cf8 | 2173 | (ptrdiff_t nargs, Lisp_Object *args) |
4ed46869 | 2174 | { |
af7c60ca | 2175 | Lisp_Object new_head, old_list, arglist[2]; |
321c819c | 2176 | Lisp_Object list_2022, list_emacs_mule; |
f66c7cf8 | 2177 | ptrdiff_t i; |
c5101a77 | 2178 | int id; |
4ed46869 | 2179 | |
8ddf5e57 | 2180 | old_list = Fcopy_sequence (Vcharset_ordered_list); |
af7c60ca | 2181 | new_head = Qnil; |
8ddf5e57 | 2182 | for (i = 0; i < nargs; i++) |
4ed46869 | 2183 | { |
8ddf5e57 | 2184 | CHECK_CHARSET_GET_ID (args[i], id); |
af7c60ca KH |
2185 | if (! NILP (Fmemq (make_number (id), old_list))) |
2186 | { | |
2187 | old_list = Fdelq (make_number (id), old_list); | |
2188 | new_head = Fcons (make_number (id), new_head); | |
2189 | } | |
5729c92f | 2190 | } |
8ddf5e57 | 2191 | arglist[0] = Fnreverse (new_head); |
6a9c90ec | 2192 | arglist[1] = Vcharset_non_preferred_head = old_list; |
8ddf5e57 | 2193 | Vcharset_ordered_list = Fnconc (2, arglist); |
dbbb237d | 2194 | charset_ordered_list_tick++; |
5729c92f | 2195 | |
6809ca75 | 2196 | charset_unibyte = -1; |
321c819c | 2197 | for (old_list = Vcharset_ordered_list, list_2022 = list_emacs_mule = Qnil; |
d017b41e | 2198 | CONSP (old_list); old_list = XCDR (old_list)) |
5729c92f | 2199 | { |
e77415b0 | 2200 | if (! NILP (Fmemq (XCAR (old_list), Viso_2022_charset_list))) |
321c819c KH |
2201 | list_2022 = Fcons (XCAR (old_list), list_2022); |
2202 | if (! NILP (Fmemq (XCAR (old_list), Vemacs_mule_charset_list))) | |
2203 | list_emacs_mule = Fcons (XCAR (old_list), list_emacs_mule); | |
6809ca75 KH |
2204 | if (charset_unibyte < 0) |
2205 | { | |
2206 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (old_list))); | |
2207 | ||
2208 | if (CHARSET_DIMENSION (charset) == 1 | |
2209 | && CHARSET_ASCII_COMPATIBLE_P (charset) | |
2210 | && CHARSET_MAX_CHAR (charset) >= 0x80) | |
2211 | charset_unibyte = CHARSET_ID (charset); | |
2212 | } | |
4ed46869 | 2213 | } |
321c819c KH |
2214 | Viso_2022_charset_list = Fnreverse (list_2022); |
2215 | Vemacs_mule_charset_list = Fnreverse (list_emacs_mule); | |
6809ca75 KH |
2216 | if (charset_unibyte < 0) |
2217 | charset_unibyte = charset_iso_8859_1; | |
4ed46869 | 2218 | |
8ddf5e57 | 2219 | return Qnil; |
4ed46869 KH |
2220 | } |
2221 | ||
d5b33309 KH |
2222 | DEFUN ("charset-id-internal", Fcharset_id_internal, Scharset_id_internal, |
2223 | 0, 1, 0, | |
2224 | doc: /* Internal use only. | |
2225 | Return charset identification number of CHARSET. */) | |
5842a27b | 2226 | (Lisp_Object charset) |
4ed46869 | 2227 | { |
d5b33309 | 2228 | int id; |
4ed46869 | 2229 | |
d5b33309 KH |
2230 | CHECK_CHARSET_GET_ID (charset, id); |
2231 | return make_number (id); | |
4ed46869 KH |
2232 | } |
2233 | ||
7a84eee5 KH |
2234 | struct charset_sort_data |
2235 | { | |
2236 | Lisp_Object charset; | |
2237 | int id; | |
0065d054 | 2238 | ptrdiff_t priority; |
7a84eee5 KH |
2239 | }; |
2240 | ||
2241 | static int | |
2242 | charset_compare (const void *d1, const void *d2) | |
2243 | { | |
2244 | const struct charset_sort_data *data1 = d1, *data2 = d2; | |
0065d054 PE |
2245 | if (data1->priority != data2->priority) |
2246 | return data1->priority < data2->priority ? -1 : 1; | |
2247 | return 0; | |
7a84eee5 KH |
2248 | } |
2249 | ||
2250 | DEFUN ("sort-charsets", Fsort_charsets, Ssort_charsets, 1, 1, 0, | |
2251 | doc: /* Sort charset list CHARSETS by a priority of each charset. | |
2252 | Return the sorted list. CHARSETS is modified by side effects. | |
2253 | See also `charset-priority-list' and `set-charset-priority'. */) | |
2254 | (Lisp_Object charsets) | |
2255 | { | |
2256 | Lisp_Object len = Flength (charsets); | |
0065d054 PE |
2257 | ptrdiff_t n = XFASTINT (len), i, j; |
2258 | int done; | |
7a84eee5 KH |
2259 | Lisp_Object tail, elt, attrs; |
2260 | struct charset_sort_data *sort_data; | |
726929c4 | 2261 | int id, min_id = INT_MAX, max_id = INT_MIN; |
7a84eee5 KH |
2262 | USE_SAFE_ALLOCA; |
2263 | ||
2264 | if (n == 0) | |
2265 | return Qnil; | |
0065d054 | 2266 | SAFE_NALLOCA (sort_data, 1, n); |
7a84eee5 KH |
2267 | for (tail = charsets, i = 0; CONSP (tail); tail = XCDR (tail), i++) |
2268 | { | |
2269 | elt = XCAR (tail); | |
2270 | CHECK_CHARSET_GET_ATTR (elt, attrs); | |
2271 | sort_data[i].charset = elt; | |
2272 | sort_data[i].id = id = XINT (CHARSET_ATTR_ID (attrs)); | |
726929c4 | 2273 | if (id < min_id) |
7a84eee5 | 2274 | min_id = id; |
726929c4 | 2275 | if (id > max_id) |
7a84eee5 KH |
2276 | max_id = id; |
2277 | } | |
2278 | for (done = 0, tail = Vcharset_ordered_list, i = 0; | |
2279 | done < n && CONSP (tail); tail = XCDR (tail), i++) | |
2280 | { | |
2281 | elt = XCAR (tail); | |
2282 | id = XFASTINT (elt); | |
2283 | if (id >= min_id && id <= max_id) | |
2284 | for (j = 0; j < n; j++) | |
2285 | if (sort_data[j].id == id) | |
2286 | { | |
2287 | sort_data[j].priority = i; | |
2288 | done++; | |
2289 | } | |
2290 | } | |
2291 | qsort (sort_data, n, sizeof *sort_data, charset_compare); | |
2292 | for (i = 0, tail = charsets; CONSP (tail); tail = XCDR (tail), i++) | |
2293 | XSETCAR (tail, sort_data[i].charset); | |
2294 | SAFE_FREE (); | |
2295 | return charsets; | |
2296 | } | |
2297 | ||
4ed46869 | 2298 | \f |
3263d5a2 | 2299 | void |
971de7fb | 2300 | init_charset (void) |
4ed46869 | 2301 | { |
c8f94403 GM |
2302 | Lisp_Object tempdir; |
2303 | tempdir = Fexpand_file_name (build_string ("charsets"), Vdata_directory); | |
73dcdb9f | 2304 | if (! file_accessible_directory_p (SSDATA (tempdir))) |
c8f94403 | 2305 | { |
63541ed8 GM |
2306 | /* This used to be non-fatal (dir_warning), but it should not |
2307 | happen, and if it does sooner or later it will cause some | |
16905bec | 2308 | obscure problem (eg bug#6401), so better abort. */ |
63541ed8 GM |
2309 | fprintf (stderr, "Error: charsets directory not found:\n\ |
2310 | %s\n\ | |
7b9cb544 | 2311 | Emacs will not function correctly without the character map files.\n%s\ |
c8f94403 | 2312 | Please check your installation!\n", |
7b9cb544 GM |
2313 | SDATA (tempdir), |
2314 | egetenv("EMACSDATA") ? "The EMACSDATA environment \ | |
2315 | variable is set, maybe it has the wrong value?\n" : ""); | |
63541ed8 | 2316 | exit (1); |
c8f94403 GM |
2317 | } |
2318 | ||
6c6f1994 | 2319 | Vcharset_map_path = list1 (tempdir); |
4ed46869 KH |
2320 | } |
2321 | ||
4ed46869 | 2322 | |
dfcf069d | 2323 | void |
971de7fb | 2324 | init_charset_once (void) |
4ed46869 KH |
2325 | { |
2326 | int i, j, k; | |
2327 | ||
3263d5a2 KH |
2328 | for (i = 0; i < ISO_MAX_DIMENSION; i++) |
2329 | for (j = 0; j < ISO_MAX_CHARS; j++) | |
2330 | for (k = 0; k < ISO_MAX_FINAL; k++) | |
2331 | iso_charset_table[i][j][k] = -1; | |
4ed46869 | 2332 | |
60383934 | 2333 | for (i = 0; i < 256; i++) |
b84ae584 | 2334 | emacs_mule_charset[i] = -1; |
4ed46869 | 2335 | |
7c7dceee KH |
2336 | charset_jisx0201_roman = -1; |
2337 | charset_jisx0208_1978 = -1; | |
2338 | charset_jisx0208 = -1; | |
d32320c4 | 2339 | charset_ksc5601 = -1; |
4ed46869 KH |
2340 | } |
2341 | ||
2342 | #ifdef emacs | |
2343 | ||
f701dc2a PE |
2344 | /* Allocate an initial charset table that is large enough to handle |
2345 | Emacs while it is bootstrapping. As of September 2011, the size | |
2346 | needs to be at least 166; make it a bit bigger to allow for future | |
2347 | expansion. | |
2348 | ||
2349 | Don't make the value so small that the table is reallocated during | |
2350 | bootstrapping, as glibc malloc calls larger than just under 64 KiB | |
2351 | during an initial bootstrap wreak havoc after dumping; see the | |
2352 | M_MMAP_THRESHOLD value in alloc.c, plus there is a extra overhead | |
2353 | internal to glibc malloc and perhaps to Emacs malloc debugging. */ | |
2354 | static struct charset charset_table_init[180]; | |
2355 | ||
dfcf069d | 2356 | void |
971de7fb | 2357 | syms_of_charset (void) |
4ed46869 | 2358 | { |
fe6aa7a1 BT |
2359 | #include "charset.x" |
2360 | ||
3263d5a2 KH |
2361 | DEFSYM (Qcharsetp, "charsetp"); |
2362 | ||
2363 | DEFSYM (Qascii, "ascii"); | |
2364 | DEFSYM (Qunicode, "unicode"); | |
6c652beb | 2365 | DEFSYM (Qemacs, "emacs"); |
2fe1edd1 | 2366 | DEFSYM (Qeight_bit, "eight-bit"); |
3263d5a2 KH |
2367 | DEFSYM (Qiso_8859_1, "iso-8859-1"); |
2368 | ||
2369 | DEFSYM (Qgl, "gl"); | |
2370 | DEFSYM (Qgr, "gr"); | |
2371 | ||
3263d5a2 KH |
2372 | staticpro (&Vcharset_ordered_list); |
2373 | Vcharset_ordered_list = Qnil; | |
2374 | ||
2375 | staticpro (&Viso_2022_charset_list); | |
2376 | Viso_2022_charset_list = Qnil; | |
2377 | ||
2378 | staticpro (&Vemacs_mule_charset_list); | |
2379 | Vemacs_mule_charset_list = Qnil; | |
2380 | ||
3943ed76 | 2381 | /* Don't staticpro them here. It's done in syms_of_fns. */ |
088dcc3e DN |
2382 | QCtest = intern_c_string (":test"); |
2383 | Qeq = intern_c_string ("eq"); | |
3943ed76 | 2384 | |
3263d5a2 | 2385 | staticpro (&Vcharset_hash_table); |
8f924df7 KH |
2386 | { |
2387 | Lisp_Object args[2]; | |
2388 | args[0] = QCtest; | |
2389 | args[1] = Qeq; | |
2390 | Vcharset_hash_table = Fmake_hash_table (2, args); | |
2391 | } | |
3263d5a2 | 2392 | |
f701dc2a | 2393 | charset_table = charset_table_init; |
faa52174 | 2394 | charset_table_size = ARRAYELTS (charset_table_init); |
3263d5a2 KH |
2395 | charset_table_used = 0; |
2396 | ||
29208e82 | 2397 | DEFVAR_LISP ("charset-map-path", Vcharset_map_path, |
fb7ada5f | 2398 | doc: /* List of directories to search for charset map files. */); |
4beef065 | 2399 | Vcharset_map_path = Qnil; |
4ed46869 | 2400 | |
29208e82 | 2401 | DEFVAR_BOOL ("inhibit-load-charset-map", inhibit_load_charset_map, |
ecca2aad KH |
2402 | doc: /* Inhibit loading of charset maps. Used when dumping Emacs. */); |
2403 | inhibit_load_charset_map = 0; | |
2404 | ||
29208e82 | 2405 | DEFVAR_LISP ("charset-list", Vcharset_list, |
528623a0 | 2406 | doc: /* List of all charsets ever defined. */); |
3263d5a2 KH |
2407 | Vcharset_list = Qnil; |
2408 | ||
29208e82 | 2409 | DEFVAR_LISP ("current-iso639-language", Vcurrent_iso639_language, |
6a9c90ec KH |
2410 | doc: /* ISO639 language mnemonic symbol for the current language environment. |
2411 | If the current language environment is for multiple languages (e.g. "Latin-1"), | |
2412 | the value may be a list of mnemonics. */); | |
2413 | Vcurrent_iso639_language = Qnil; | |
2414 | ||
2fe1edd1 | 2415 | charset_ascii |
12455b2f | 2416 | = define_charset_internal (Qascii, 1, "\x00\x7F\0\0\0\0\0", |
2fe1edd1 | 2417 | 0, 127, 'B', -1, 0, 1, 0, 0); |
14e3d523 | 2418 | charset_iso_8859_1 |
12455b2f | 2419 | = define_charset_internal (Qiso_8859_1, 1, "\x00\xFF\0\0\0\0\0", |
14e3d523 | 2420 | 0, 255, -1, -1, -1, 1, 0, 0); |
2fe1edd1 | 2421 | charset_unicode |
12455b2f | 2422 | = define_charset_internal (Qunicode, 3, "\x00\xFF\x00\xFF\x00\x10\0", |
2fe1edd1 | 2423 | 0, MAX_UNICODE_CHAR, -1, 0, -1, 1, 0, 0); |
6c652beb | 2424 | charset_emacs |
12455b2f | 2425 | = define_charset_internal (Qemacs, 3, "\x00\xFF\x00\xFF\x00\x3F\0", |
6c652beb | 2426 | 0, MAX_5_BYTE_CHAR, -1, 0, -1, 1, 1, 0); |
2fe1edd1 | 2427 | charset_eight_bit |
12455b2f | 2428 | = define_charset_internal (Qeight_bit, 1, "\x80\xFF\0\0\0\0\0", |
880820fe | 2429 | 128, 255, -1, 0, -1, 0, 1, |
2fe1edd1 | 2430 | MAX_5_BYTE_CHAR + 1); |
6809ca75 | 2431 | charset_unibyte = charset_iso_8859_1; |
4ed46869 KH |
2432 | } |
2433 | ||
2434 | #endif /* emacs */ |