Commit | Line | Data |
---|---|---|
3263d5a2 KH |
1 | /* Basic character set support. |
2 | Copyright (C) 1995, 97, 98, 2000, 2001 Electrotechnical Laboratory, JAPAN. | |
75c8c592 | 3 | Licensed to the Free Software Foundation. |
12bcae05 | 4 | Copyright (C) 2001 Free Software Foundation, Inc. |
3263d5a2 KH |
5 | Copyright (C) 2001, 2002 |
6 | National Institute of Advanced Industrial Science and Technology (AIST) | |
7 | Registration Number H13PRO009 | |
4ed46869 | 8 | |
369314dc KH |
9 | This file is part of GNU Emacs. |
10 | ||
11 | GNU Emacs is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
4ed46869 | 15 | |
369314dc KH |
16 | GNU Emacs is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
4ed46869 | 20 | |
369314dc KH |
21 | You should have received a copy of the GNU General Public License |
22 | along with GNU Emacs; see the file COPYING. If not, write to | |
23 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | Boston, MA 02111-1307, USA. */ | |
4ed46869 | 25 | |
68c45bf0 PE |
26 | #ifdef emacs |
27 | #include <config.h> | |
28 | #endif | |
29 | ||
4ed46869 | 30 | #include <stdio.h> |
3263d5a2 KH |
31 | #include <unistd.h> |
32 | #include <ctype.h> | |
4ed46869 KH |
33 | |
34 | #ifdef emacs | |
35 | ||
36 | #include <sys/types.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 KH |
43 | |
44 | #else /* not emacs */ | |
45 | ||
46 | #include "mulelib.h" | |
47 | ||
48 | #endif /* emacs */ | |
49 | ||
4ed46869 | 50 | |
3263d5a2 | 51 | /*** GENERAL NOTE on CODED CHARACTER SET (CHARSET) *** |
4ed46869 | 52 | |
3263d5a2 KH |
53 | A coded character set ("charset" hereafter) is a meaningful |
54 | collection (i.e. language, culture, functionality, etc) of | |
55 | characters. Emacs handles multiple charsets at once. In Emacs Lisp | |
56 | code, a charset is represented by symbol. In C code, a charset is | |
57 | represented by its ID number or by a pointer the struct charset. | |
4ed46869 | 58 | |
3263d5a2 KH |
59 | The actual information about each charset is stored in two places. |
60 | Lispy information is stored in the hash table Vcharset_hash_table as | |
61 | a vector (charset attributes). The other information is stored in | |
62 | charset_table as struct charset. | |
4ed46869 | 63 | |
3263d5a2 | 64 | */ |
4ed46869 | 65 | |
3263d5a2 KH |
66 | /* List of all charsets. This variable is used only from Emacs |
67 | Lisp. */ | |
4ed46869 KH |
68 | Lisp_Object Vcharset_list; |
69 | ||
3263d5a2 KH |
70 | /* Hash table that contains attributes of each charset. Keys are |
71 | charset symbols, and values are vectors of charset attributes. */ | |
72 | Lisp_Object Vcharset_hash_table; | |
73 | ||
74 | /* Table of struct charset. */ | |
75 | struct charset *charset_table; | |
76 | ||
77 | static int charset_table_size; | |
78 | int charset_table_used; | |
79 | ||
80 | Lisp_Object Qcharsetp; | |
81 | ||
82 | /* Special charset symbols. */ | |
83 | Lisp_Object Qascii; | |
84 | Lisp_Object Qeight_bit_control; | |
85 | Lisp_Object Qeight_bit_graphic; | |
86 | Lisp_Object Qiso_8859_1; | |
87 | Lisp_Object Qunicode; | |
b0e3cf2b | 88 | |
3263d5a2 KH |
89 | /* The corresponding charsets. */ |
90 | int charset_ascii; | |
91 | int charset_8_bit_control; | |
92 | int charset_8_bit_graphic; | |
93 | int charset_iso_8859_1; | |
94 | int charset_unicode; | |
c1a08b4c | 95 | |
3263d5a2 KH |
96 | /* Value of charset attribute `charset-iso-plane'. */ |
97 | Lisp_Object Qgl, Qgr; | |
c1a08b4c | 98 | |
3263d5a2 KH |
99 | /* The primary charset. It is a charset of unibyte characters. */ |
100 | int charset_primary; | |
101 | ||
102 | /* List of charsets ordered by the priority. */ | |
103 | Lisp_Object Vcharset_ordered_list; | |
104 | ||
105 | /* List of iso-2022 charsets. */ | |
106 | Lisp_Object Viso_2022_charset_list; | |
107 | ||
108 | /* List of emacs-mule charsets. */ | |
109 | Lisp_Object Vemacs_mule_charset_list; | |
110 | ||
111 | struct charset *emacs_mule_charset[256]; | |
4ed46869 KH |
112 | |
113 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
114 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
3263d5a2 KH |
115 | int iso_charset_table[ISO_MAX_DIMENSION][ISO_MAX_CHARS][ISO_MAX_FINAL]; |
116 | ||
117 | Lisp_Object Vcharset_map_directory; | |
118 | ||
119 | Lisp_Object Vchar_unified_charset_table; | |
120 | ||
121 | #define CODE_POINT_TO_INDEX(charset, code) \ | |
122 | ((charset)->code_linear_p \ | |
123 | ? (code) - (charset)->min_code \ | |
124 | : ((((code) >> 24) <= (charset)->code_space[13]) \ | |
125 | && ((((code) >> 16) & 0xFF) <= (charset)->code_space[9]) \ | |
126 | && ((((code) >> 8) & 0xFF) <= (charset)->code_space[5]) \ | |
127 | && (((code) & 0xFF) <= (charset)->code_space[1])) \ | |
128 | ? (((((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 | : -1) | |
136 | ||
137 | ||
138 | /* Convert the character index IDX to code-point CODE for CHARSET. | |
139 | It is assumed that IDX is in a valid range. */ | |
140 | ||
141 | #define INDEX_TO_CODE_POINT(charset, idx) \ | |
142 | ((charset)->code_linear_p \ | |
143 | ? (idx) + (charset)->min_code \ | |
144 | : (((charset)->code_space[0] + (idx) % (charset)->code_space[2]) \ | |
145 | | (((charset)->code_space[4] \ | |
146 | + ((idx) / (charset)->code_space[3] % (charset)->code_space[6])) \ | |
147 | << 8) \ | |
148 | | (((charset)->code_space[8] \ | |
149 | + ((idx) / (charset)->code_space[7] % (charset)->code_space[10])) \ | |
150 | << 16) \ | |
151 | | (((charset)->code_space[12] + ((idx) / (charset)->code_space[11])) \ | |
152 | << 24))) | |
4ed46869 | 153 | |
3263d5a2 | 154 | \f |
4ed46869 | 155 | |
3263d5a2 KH |
156 | /* Set to 1 when a charset map is loaded to warn that a buffer text |
157 | and a string data may be relocated. */ | |
158 | int charset_map_loaded; | |
35e623fb | 159 | |
3263d5a2 KH |
160 | /* Parse the mapping vector MAP which has this form: |
161 | [CODE0 CHAR0 CODE1 CHAR1 ... ] | |
4cf9710d | 162 | |
3263d5a2 | 163 | If CONTROL_FLAG is 0, setup CHARSET->min_char and CHARSET->max_char. |
8a73a704 | 164 | |
3263d5a2 KH |
165 | If CONTROL_FLAG is 1, setup CHARSET->min_char, CHARSET->max_char, |
166 | CHARSET->decoder, and CHARSET->encoder. | |
93bcb785 | 167 | |
3263d5a2 KH |
168 | If CONTROL_FLAG is 2, setup CHARSET->deunifier and |
169 | Vchar_unify_table. If Vchar_unified_charset_table is non-nil, | |
170 | setup it too. */ | |
4ed46869 | 171 | |
3263d5a2 KH |
172 | static void |
173 | parse_charset_map (charset, map, control_flag) | |
174 | struct charset *charset; | |
175 | Lisp_Object map; | |
176 | int control_flag; | |
4ed46869 | 177 | { |
3263d5a2 KH |
178 | Lisp_Object vec, table; |
179 | unsigned min_code = CHARSET_MIN_CODE (charset); | |
180 | unsigned max_code = CHARSET_MAX_CODE (charset); | |
181 | int ascii_compatible_p = charset->ascii_compatible_p; | |
182 | int min_char, max_char, nonascii_min_char; | |
183 | int size; | |
184 | int i; | |
185 | int first; | |
186 | unsigned char *fast_map = charset->fast_map; | |
99529c2c | 187 | |
3263d5a2 | 188 | if (control_flag) |
8ac5a9cc | 189 | { |
3263d5a2 KH |
190 | int n = CODE_POINT_TO_INDEX (charset, max_code) + 1; |
191 | unsigned invalid_code = CHARSET_INVALID_CODE (charset); | |
6662e69b | 192 | |
3263d5a2 KH |
193 | table = Fmake_char_table (Qnil, make_number (invalid_code)); |
194 | if (control_flag == 1) | |
195 | vec = Fmake_vector (make_number (n), make_number (-1)); | |
196 | else if (! CHAR_TABLE_P (Vchar_unify_table)) | |
197 | Vchar_unify_table = Fmake_char_table (Qnil, make_number (-1)); | |
6662e69b | 198 | |
3263d5a2 | 199 | charset_map_loaded = 1; |
2e344af3 | 200 | } |
3263d5a2 KH |
201 | |
202 | size = ASIZE (map); | |
203 | nonascii_min_char = MAX_CHAR; | |
204 | CHARSET_COMPACT_CODES_P (charset) = 1; | |
205 | for (first = 1, i = 0; i < size; i += 2) | |
2e344af3 | 206 | { |
3263d5a2 KH |
207 | Lisp_Object val; |
208 | unsigned code, temp; | |
209 | int c, char_index; | |
210 | ||
211 | val = AREF (map, i); | |
212 | CHECK_NATNUM (val); | |
213 | code = XFASTINT (val); | |
214 | val = AREF (map, i + 1); | |
215 | CHECK_NATNUM (val); | |
216 | c = XFASTINT (val); | |
217 | ||
218 | if (code < min_code || code > max_code) | |
219 | continue; | |
220 | char_index = CODE_POINT_TO_INDEX (charset, code); | |
221 | if (char_index < 0 | |
222 | || c > MAX_CHAR) | |
223 | continue; | |
224 | ||
225 | if (control_flag < 2) | |
226 | { | |
227 | if (first) | |
228 | { | |
229 | min_char = max_char = c; | |
230 | first = 0; | |
231 | } | |
232 | else if (c > max_char) | |
233 | max_char = c; | |
234 | else if (c < min_char) | |
235 | min_char = c; | |
236 | if (ascii_compatible_p && ! ASCII_BYTE_P (c) | |
237 | && c < nonascii_min_char) | |
238 | nonascii_min_char = c; | |
239 | ||
240 | CHARSET_FAST_MAP_SET (c, fast_map); | |
241 | } | |
242 | ||
243 | if (control_flag) | |
2e344af3 | 244 | { |
3263d5a2 KH |
245 | if (control_flag == 1) |
246 | { | |
247 | if (char_index >= ASIZE (vec)) | |
248 | abort (); | |
249 | ASET (vec, char_index, make_number (c)); | |
250 | if (code > 0x7FFFFFF) | |
251 | { | |
252 | CHAR_TABLE_SET (table, c, | |
253 | Fcons (make_number (code >> 16), | |
254 | make_number (code & 0xFFFF))); | |
255 | CHARSET_COMPACT_CODES_P (charset) = 0; | |
256 | } | |
257 | else | |
258 | CHAR_TABLE_SET (table, c, make_number (code)); | |
259 | } | |
260 | else | |
261 | { | |
262 | int c1 = DECODE_CHAR (charset, code); | |
263 | if (c1 >= 0) | |
264 | { | |
265 | CHAR_TABLE_SET (table, c, make_number (c1)); | |
266 | CHAR_TABLE_SET (Vchar_unify_table, c1, c); | |
267 | if (CHAR_TABLE_P (Vchar_unified_charset_table)) | |
268 | CHAR_TABLE_SET (Vchar_unified_charset_table, c1, | |
269 | CHARSET_NAME (charset)); | |
270 | } | |
271 | } | |
2e344af3 | 272 | } |
8ac5a9cc | 273 | } |
3263d5a2 KH |
274 | |
275 | if (control_flag < 2) | |
4ed46869 | 276 | { |
3263d5a2 KH |
277 | CHARSET_MIN_CHAR (charset) = (ascii_compatible_p |
278 | ? nonascii_min_char : min_char); | |
279 | CHARSET_MAX_CHAR (charset) = max_char; | |
280 | if (control_flag) | |
4ed46869 | 281 | { |
3263d5a2 KH |
282 | CHARSET_DECODER (charset) = vec; |
283 | CHARSET_ENCODER (charset) = table; | |
4ed46869 KH |
284 | } |
285 | } | |
2e344af3 | 286 | else |
3263d5a2 | 287 | CHARSET_DEUNIFIER (charset) = table; |
4ed46869 KH |
288 | } |
289 | ||
12bcae05 | 290 | |
3263d5a2 KH |
291 | /* Read a hexadecimal number (preceded by "0x") from the file FP while |
292 | paying attention to comment charcter '#'. */ | |
12bcae05 | 293 | |
3263d5a2 KH |
294 | static INLINE unsigned |
295 | read_hex (fp, eof) | |
296 | FILE *fp; | |
297 | int *eof; | |
12bcae05 | 298 | { |
3263d5a2 KH |
299 | int c; |
300 | unsigned n; | |
12bcae05 | 301 | |
3263d5a2 KH |
302 | while ((c = getc (fp)) != EOF) |
303 | { | |
304 | if (c == '#' || c == ' ') | |
305 | { | |
306 | while ((c = getc (fp)) != EOF && c != '\n'); | |
307 | } | |
308 | else if (c == '0') | |
309 | { | |
310 | if ((c = getc (fp)) == EOF || c == 'x') | |
311 | break; | |
312 | } | |
313 | } | |
314 | if (c == EOF) | |
315 | { | |
316 | *eof = 1; | |
317 | return 0; | |
318 | } | |
319 | *eof = 0; | |
320 | n = 0; | |
321 | if (c == 'x') | |
322 | while ((c = getc (fp)) != EOF && isxdigit (c)) | |
323 | n = ((n << 4) | |
324 | | (c <= '9' ? c - '0' : c <= 'F' ? c - 'A' + 10 : c - 'a' + 10)); | |
325 | else | |
326 | while ((c = getc (fp)) != EOF && isdigit (c)) | |
327 | n = (n * 10) + c - '0'; | |
328 | return n; | |
329 | } | |
12bcae05 | 330 | |
537efd8d | 331 | |
3263d5a2 KH |
332 | /* Return a mapping vector for CHARSET loaded from MAPFILE. |
333 | Each line of MAPFILE has this form: | |
334 | 0xAAAA 0xBBBB | |
335 | where 0xAAAA is a code-point and 0xBBBB is the corresponding | |
336 | character code. | |
337 | The returned vector has this form: | |
338 | [ CODE1 CHAR1 CODE2 CHAR2 .... ] | |
339 | */ | |
4ed46869 | 340 | |
3263d5a2 KH |
341 | static Lisp_Object |
342 | load_charset_map (charset, mapfile) | |
343 | struct charset *charset; | |
344 | Lisp_Object mapfile; | |
4ed46869 | 345 | { |
3263d5a2 KH |
346 | int fd; |
347 | FILE *fp; | |
348 | int num; | |
349 | unsigned *numbers_table[256]; | |
350 | int numbers_table_used; | |
351 | unsigned *numbers; | |
352 | int eof; | |
353 | Lisp_Object suffixes; | |
354 | Lisp_Object vec; | |
355 | int i; | |
4ed46869 | 356 | |
3263d5a2 KH |
357 | suffixes = Fcons (build_string (".map"), |
358 | Fcons (build_string (".TXT"), Qnil)); | |
4ed46869 | 359 | |
3263d5a2 KH |
360 | fd = openp (Fcons (Vcharset_map_directory, Qnil), mapfile, suffixes, |
361 | NULL, 0); | |
362 | if (fd < 0 | |
363 | || ! (fp = fdopen (fd, "r"))) | |
364 | { | |
365 | add_to_log ("Failure in loading charset map: %S", mapfile, Qnil); | |
366 | return Qnil; | |
367 | } | |
4ed46869 | 368 | |
3263d5a2 KH |
369 | numbers_table_used = 0; |
370 | num = 0; | |
371 | eof = 0; | |
372 | while (1) | |
373 | { | |
374 | unsigned n = read_hex (fp, &eof); | |
4ed46869 | 375 | |
3263d5a2 KH |
376 | if (eof) |
377 | break; | |
378 | if ((num % 0x10000) == 0) | |
379 | { | |
380 | if (numbers_table_used == 256) | |
381 | break; | |
382 | numbers = (unsigned *) alloca (sizeof (unsigned) * 0x10000); | |
383 | numbers_table[numbers_table_used++] = numbers; | |
384 | } | |
385 | *numbers++ = n; | |
386 | num++; | |
387 | } | |
388 | fclose (fp); | |
389 | close (fd); | |
4ed46869 | 390 | |
3263d5a2 KH |
391 | vec = Fmake_vector (make_number (num), Qnil); |
392 | for (i = 0; i < num; i++, numbers++) | |
393 | { | |
394 | if ((i % 0x10000) == 0) | |
395 | numbers = numbers_table[i / 0x10000]; | |
396 | ASET (vec, i, make_number (*numbers)); | |
397 | } | |
4ed46869 | 398 | |
3263d5a2 KH |
399 | charset_map_loaded = 1; |
400 | ||
401 | return vec; | |
ac4137cc KH |
402 | } |
403 | ||
3263d5a2 KH |
404 | static void |
405 | load_charset (charset) | |
406 | struct charset *charset; | |
ac4137cc | 407 | { |
3263d5a2 KH |
408 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP_DEFERRED) |
409 | { | |
410 | Lisp_Object map; | |
ac4137cc | 411 | |
3263d5a2 KH |
412 | map = CHARSET_MAP (charset); |
413 | if (STRINGP (map)) | |
414 | map = load_charset_map (charset, map); | |
415 | parse_charset_map (charset, map, 1); | |
416 | CHARSET_METHOD (charset) = CHARSET_METHOD_MAP; | |
417 | } | |
4ed46869 KH |
418 | } |
419 | ||
3263d5a2 KH |
420 | |
421 | DEFUN ("charsetp", Fcharsetp, Scharsetp, 1, 1, 0, | |
422 | doc: /* Return non-nil if and only if OBJECT is a charset.*/) | |
423 | (object) | |
424 | Lisp_Object object; | |
23d2a7f1 | 425 | { |
3263d5a2 | 426 | return (CHARSETP (object) ? Qt : Qnil); |
23d2a7f1 KH |
427 | } |
428 | ||
35e623fb | 429 | |
3263d5a2 KH |
430 | void |
431 | map_charset_chars (c_function, function, charset_symbol, arg) | |
432 | void (*c_function) (Lisp_Object, Lisp_Object, Lisp_Object); | |
433 | Lisp_Object function, charset_symbol, arg; | |
35e623fb | 434 | { |
3263d5a2 KH |
435 | int id; |
436 | struct charset *charset; | |
437 | Lisp_Object range; | |
d2665018 | 438 | |
3263d5a2 KH |
439 | CHECK_CHARSET_GET_ID (charset_symbol, id); |
440 | charset = CHARSET_FROM_ID (id); | |
441 | ||
442 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP_DEFERRED) | |
443 | load_charset (charset); | |
444 | ||
445 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_OFFSET) | |
446 | { | |
447 | range = Fcons (make_number (CHARSET_MIN_CHAR (charset)), | |
448 | make_number (CHARSET_MAX_CHAR (charset))); | |
449 | if (NILP (function)) | |
450 | (*c_function) (arg, range, Qnil); | |
451 | else | |
452 | call2 (function, range, arg); | |
453 | } | |
454 | else if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) | |
455 | { | |
456 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
457 | return; | |
458 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) | |
bbf12bb3 | 459 | { |
3263d5a2 KH |
460 | range = Fcons (make_number (0), make_number (127)); |
461 | if (NILP (function)) | |
462 | (*c_function) (arg, range, Qnil); | |
463 | else | |
464 | call2 (function, range, arg); | |
bbf12bb3 | 465 | } |
3263d5a2 KH |
466 | map_char_table (c_function, function, CHARSET_ENCODER (charset), arg, |
467 | 0, NULL); | |
468 | } | |
469 | else /* i.e. CHARSET_METHOD_PARENT */ | |
470 | { | |
471 | int from, to, c; | |
472 | unsigned code; | |
473 | int i, j, k, l; | |
474 | int *code_space = CHARSET_CODE_SPACE (charset); | |
475 | Lisp_Object val; | |
476 | ||
477 | range = Fcons (Qnil, Qnil); | |
478 | from = to = -2; | |
479 | for (i = code_space[12]; i <= code_space[13]; i++) | |
480 | for (j = code_space[8]; j <= code_space[9]; j++) | |
481 | for (k = code_space[4]; k <= code_space[5]; k++) | |
482 | for (l = code_space[0]; l <= code_space[1]; l++) | |
483 | { | |
484 | code = (i << 24) | (j << 16) | (k << 8) | l; | |
485 | c = DECODE_CHAR (charset, code); | |
486 | if (c == to + 1) | |
487 | { | |
488 | to++; | |
489 | continue; | |
490 | } | |
491 | if (from >= 0) | |
492 | { | |
493 | if (from < to) | |
494 | { | |
495 | XSETCAR (range, make_number (from)); | |
496 | XSETCDR (range, make_number (to)); | |
497 | val = range; | |
498 | } | |
499 | else | |
500 | val = make_number (from); | |
501 | if (NILP (function)) | |
502 | (*c_function) (arg, val, Qnil); | |
503 | else | |
504 | call2 (function, val, arg); | |
505 | } | |
506 | from = to = (c < 0 ? -2 : c); | |
507 | } | |
508 | if (from >= 0) | |
bbf12bb3 | 509 | { |
3263d5a2 KH |
510 | if (from < to) |
511 | { | |
512 | XSETCAR (range, make_number (from)); | |
513 | XSETCDR (range, make_number (to)); | |
514 | val = range; | |
515 | } | |
516 | else | |
517 | val = make_number (from); | |
518 | if (NILP (function)) | |
519 | (*c_function) (arg, val, Qnil); | |
520 | else | |
521 | call2 (function, val, arg); | |
bbf12bb3 | 522 | } |
35e623fb | 523 | } |
3263d5a2 KH |
524 | } |
525 | ||
526 | DEFUN ("map-charset-chars", Fmap_charset_chars, Smap_charset_chars, 2, 3, 0, | |
527 | doc: /* Call FUNCTION for each characters in CHARSET. | |
528 | FUNCTION is called with three arguments; FROM, TO, and the 3rd optional | |
529 | argument ARG. | |
530 | FROM and TO indicates a range of character sequence that are contained | |
531 | in CHARSET. */) | |
532 | (function, charset, arg) | |
533 | Lisp_Object function, charset, arg; | |
534 | { | |
535 | map_charset_chars (NULL, function, charset, arg); | |
536 | return Qnil; | |
35e623fb | 537 | } |
76d7b829 KH |
538 | |
539 | ||
3263d5a2 KH |
540 | /* Define a charset according to the arguments. The Nth argument is |
541 | the Nth attribute of the charset (the last attribute `charset-id' | |
542 | is not included). See the docstring of `define-charset' for the | |
543 | detail. */ | |
76d7b829 | 544 | |
3263d5a2 KH |
545 | DEFUN ("define-charset-internal", Fdefine_charset_internal, |
546 | Sdefine_charset_internal, charset_arg_max, MANY, 0, | |
547 | doc: /* For internal use only. */) | |
548 | (nargs, args) | |
549 | int nargs; | |
550 | Lisp_Object *args; | |
76d7b829 | 551 | { |
3263d5a2 KH |
552 | /* Charset attr vector. */ |
553 | Lisp_Object attrs; | |
554 | Lisp_Object val; | |
555 | unsigned hash_code; | |
556 | struct Lisp_Hash_Table *hash_table = XHASH_TABLE (Vcharset_hash_table); | |
557 | int i; | |
558 | struct charset charset; | |
559 | int id; | |
560 | int dimension; | |
561 | int new_definition_p; | |
562 | int nchars; | |
563 | ||
564 | if (nargs != charset_arg_max) | |
565 | return Fsignal (Qwrong_number_of_arguments, | |
566 | Fcons (intern ("define-charset-internal"), | |
567 | make_number (nargs))); | |
568 | ||
569 | attrs = Fmake_vector (make_number (charset_attr_max), Qnil); | |
570 | ||
571 | CHECK_SYMBOL (args[charset_arg_name]); | |
572 | ASET (attrs, charset_name, args[charset_arg_name]); | |
573 | ||
574 | val = args[charset_arg_code_space]; | |
575 | for (i = 0, dimension = 0, nchars = 1; i < 4; i++) | |
76d7b829 | 576 | { |
3263d5a2 KH |
577 | int min_byte, max_byte; |
578 | ||
579 | min_byte = XINT (Faref (val, make_number (i * 2))); | |
580 | max_byte = XINT (Faref (val, make_number (i * 2 + 1))); | |
581 | if (min_byte < 0 || min_byte > max_byte || max_byte >= 256) | |
582 | error ("Invalid :code-space value"); | |
583 | charset.code_space[i * 4] = min_byte; | |
584 | charset.code_space[i * 4 + 1] = max_byte; | |
585 | charset.code_space[i * 4 + 2] = max_byte - min_byte + 1; | |
586 | nchars *= charset.code_space[i * 4 + 2]; | |
587 | charset.code_space[i * 4 + 3] = nchars; | |
588 | if (max_byte > 0) | |
589 | dimension = i + 1; | |
590 | } | |
76d7b829 | 591 | |
3263d5a2 KH |
592 | val = args[charset_arg_dimension]; |
593 | if (NILP (val)) | |
594 | charset.dimension = dimension; | |
595 | else | |
596 | { | |
597 | CHECK_NATNUM (val); | |
598 | charset.dimension = XINT (val); | |
599 | if (charset.dimension < 1 || charset.dimension > 4) | |
600 | args_out_of_range_3 (val, make_number (1), make_number (4)); | |
601 | } | |
602 | ||
603 | charset.code_linear_p | |
604 | = (charset.dimension == 1 | |
605 | || (charset.code_space[2] == 256 | |
606 | && (charset.dimension == 2 | |
607 | || (charset.code_space[6] == 256 | |
608 | && (charset.dimension == 3 | |
609 | || charset.code_space[10] == 256))))); | |
610 | ||
611 | charset.iso_chars_96 = charset.code_space[2] == 96; | |
612 | ||
613 | charset.min_code = (charset.code_space[0] | |
614 | | (charset.code_space[4] << 8) | |
615 | | (charset.code_space[8] << 16) | |
616 | | (charset.code_space[12] << 24)); | |
617 | charset.max_code = (charset.code_space[1] | |
618 | | (charset.code_space[5] << 8) | |
619 | | (charset.code_space[9] << 16) | |
620 | | (charset.code_space[13] << 24)); | |
621 | ||
622 | val = args[charset_arg_invalid_code]; | |
623 | if (NILP (val)) | |
624 | { | |
625 | if (charset.min_code > 0) | |
626 | charset.invalid_code = 0; | |
bbf12bb3 KH |
627 | else |
628 | { | |
3263d5a2 KH |
629 | XSETINT (val, charset.max_code + 1); |
630 | if (XINT (val) == charset.max_code + 1) | |
631 | charset.invalid_code = charset.max_code + 1; | |
632 | else | |
633 | error ("Attribute :invalid-code must be specified"); | |
76d7b829 | 634 | } |
76d7b829 | 635 | } |
3263d5a2 KH |
636 | else |
637 | { | |
638 | CHECK_NATNUM (val); | |
639 | charset.invalid_code = XFASTINT (val); | |
640 | } | |
76d7b829 | 641 | |
3263d5a2 KH |
642 | val = args[charset_arg_iso_final]; |
643 | if (NILP (val)) | |
644 | charset.iso_final = -1; | |
645 | else | |
646 | { | |
647 | CHECK_NUMBER (val); | |
648 | if (XINT (val) < '0' || XINT (val) > 127) | |
649 | error ("Invalid iso-final-char: %d", XINT (val)); | |
650 | charset.iso_final = XINT (val); | |
651 | } | |
652 | ||
653 | val = args[charset_arg_iso_revision]; | |
654 | if (NILP (val)) | |
655 | charset.iso_revision = -1; | |
656 | else | |
4ed46869 | 657 | { |
3263d5a2 KH |
658 | CHECK_NUMBER (val); |
659 | if (XINT (val) > 63) | |
660 | args_out_of_range (make_number (63), val); | |
661 | charset.iso_revision = XINT (val); | |
4ed46869 | 662 | } |
3263d5a2 KH |
663 | |
664 | val = args[charset_arg_emacs_mule_id]; | |
665 | if (NILP (val)) | |
666 | charset.emacs_mule_id = -1; | |
4ed46869 KH |
667 | else |
668 | { | |
3263d5a2 KH |
669 | CHECK_NATNUM (val); |
670 | if ((XINT (val) > 0 && XINT (val) <= 128) || XINT (val) >= 256) | |
671 | error ("Invalid emacs-mule-id: %d", XINT (val)); | |
672 | charset.emacs_mule_id = XINT (val); | |
c83ef371 | 673 | } |
6ef23ebb | 674 | |
3263d5a2 | 675 | charset.ascii_compatible_p = ! NILP (args[charset_arg_ascii_compatible_p]); |
4ed46869 | 676 | |
3263d5a2 KH |
677 | charset.supplementary_p = ! NILP (args[charset_arg_supplementary_p]); |
678 | ||
679 | charset.unified_p = 0; | |
680 | ||
681 | bzero (charset.fast_map, sizeof (charset.fast_map)); | |
682 | ||
683 | if (! NILP (args[charset_arg_code_offset])) | |
684 | { | |
685 | val = args[charset_arg_code_offset]; | |
686 | CHECK_NUMBER (val); | |
687 | ||
688 | charset.method = CHARSET_METHOD_OFFSET; | |
689 | charset.code_offset = XINT (val); | |
690 | ||
691 | i = CODE_POINT_TO_INDEX (&charset, charset.min_code); | |
692 | charset.min_char = i + charset.code_offset; | |
693 | i = CODE_POINT_TO_INDEX (&charset, charset.max_code); | |
694 | charset.max_char = i + charset.code_offset; | |
695 | if (charset.max_char > MAX_CHAR) | |
696 | error ("Unsupported max char: %d", charset.max_char); | |
697 | ||
698 | for (i = charset.min_char; i < 0x10000 && i <= charset.max_char; | |
699 | i += 128) | |
700 | CHARSET_FAST_MAP_SET (i, charset.fast_map); | |
701 | for (; i <= charset.max_char; i += 0x1000) | |
702 | CHARSET_FAST_MAP_SET (i, charset.fast_map); | |
703 | } | |
704 | else if (! NILP (args[charset_arg_map])) | |
705 | { | |
706 | val = args[charset_arg_map]; | |
707 | ASET (attrs, charset_map, val); | |
708 | if (STRINGP (val)) | |
709 | val = load_charset_map (&charset, val); | |
710 | CHECK_VECTOR (val); | |
711 | parse_charset_map (&charset, val, 0); | |
712 | charset.method = CHARSET_METHOD_MAP_DEFERRED; | |
713 | } | |
714 | else if (! NILP (args[charset_arg_parents])) | |
715 | { | |
716 | val = args[charset_arg_parents]; | |
717 | CHECK_LIST (val); | |
718 | charset.method = CHARSET_METHOD_INHERIT; | |
719 | val = Fcopy_sequence (val); | |
720 | ASET (attrs, charset_parents, val); | |
721 | ||
722 | charset.min_char = MAX_CHAR; | |
723 | charset.max_char = 0; | |
724 | for (; ! NILP (val); val = Fcdr (val)) | |
4ed46869 | 725 | { |
3263d5a2 KH |
726 | Lisp_Object elt, car_part, cdr_part; |
727 | int this_id, offset; | |
728 | struct charset *this_charset; | |
729 | ||
730 | elt = Fcar (val); | |
731 | if (CONSP (elt)) | |
732 | { | |
733 | car_part = XCAR (elt); | |
734 | cdr_part = XCDR (elt); | |
735 | CHECK_CHARSET_GET_ID (car_part, this_id); | |
736 | CHECK_NUMBER (cdr_part); | |
737 | offset = XINT (cdr_part); | |
738 | } | |
739 | else | |
4ed46869 | 740 | { |
3263d5a2 KH |
741 | CHECK_CHARSET_GET_ID (elt, this_id); |
742 | offset = 0; | |
4ed46869 | 743 | } |
3263d5a2 KH |
744 | XSETCAR (val, Fcons (make_number (this_id), make_number (offset))); |
745 | ||
746 | this_charset = CHARSET_FROM_ID (this_id); | |
747 | if (charset.min_char > this_charset->min_char) | |
748 | charset.min_char = this_charset->min_char; | |
749 | if (charset.max_char < this_charset->max_char) | |
750 | charset.max_char = this_charset->max_char; | |
751 | for (i = 0; i < 190; i++) | |
752 | charset.fast_map[i] |= this_charset->fast_map[i]; | |
4ed46869 | 753 | } |
4ed46869 | 754 | } |
3263d5a2 KH |
755 | else |
756 | error ("None of :code-offset, :map, :parents are specified"); | |
4ed46869 | 757 | |
3263d5a2 KH |
758 | val = args[charset_arg_unify_map]; |
759 | if (! NILP (val) && !STRINGP (val)) | |
760 | CHECK_VECTOR (val); | |
761 | ASET (attrs, charset_unify_map, val); | |
4ed46869 | 762 | |
3263d5a2 KH |
763 | CHECK_LIST (args[charset_arg_plist]); |
764 | ASET (attrs, charset_plist, args[charset_arg_plist]); | |
4ed46869 | 765 | |
3263d5a2 KH |
766 | charset.hash_index = hash_lookup (hash_table, args[charset_arg_name], |
767 | &hash_code); | |
768 | if (charset.hash_index >= 0) | |
769 | { | |
770 | new_definition_p = 0; | |
771 | HASH_VALUE (hash_table, charset.hash_index) = attrs; | |
772 | } | |
1a45ff10 | 773 | else |
3263d5a2 KH |
774 | { |
775 | charset.hash_index = hash_put (hash_table, args[charset_arg_name], attrs, | |
776 | hash_code); | |
777 | if (charset_table_used == charset_table_size) | |
778 | { | |
779 | charset_table_size += 256; | |
780 | charset_table | |
781 | = ((struct charset *) | |
782 | xrealloc (charset_table, | |
783 | sizeof (struct charset) * charset_table_size)); | |
784 | } | |
785 | id = charset_table_used++; | |
786 | ASET (attrs, charset_id, make_number (id)); | |
787 | new_definition_p = 1; | |
788 | } | |
4ed46869 | 789 | |
4ed46869 | 790 | |
3263d5a2 KH |
791 | charset.id = id; |
792 | charset_table[id] = charset; | |
793 | ||
794 | if (charset.iso_final >= 0) | |
4ed46869 | 795 | { |
3263d5a2 KH |
796 | ISO_CHARSET_TABLE (charset.dimension, charset.iso_chars_96, |
797 | charset.iso_final) = id; | |
798 | if (new_definition_p) | |
799 | Viso_2022_charset_list = nconc2 (Viso_2022_charset_list, | |
800 | Fcons (make_number (id), Qnil)); | |
4ed46869 | 801 | } |
3263d5a2 KH |
802 | |
803 | if (charset.emacs_mule_id >= 0) | |
4ed46869 | 804 | { |
3263d5a2 KH |
805 | emacs_mule_charset[charset.emacs_mule_id] = CHARSET_FROM_ID (id); |
806 | if (new_definition_p) | |
807 | Vemacs_mule_charset_list = nconc2 (Vemacs_mule_charset_list, | |
808 | Fcons (make_number (id), Qnil)); | |
4ed46869 KH |
809 | } |
810 | ||
3263d5a2 KH |
811 | if (new_definition_p) |
812 | { | |
813 | Vcharset_list = Fcons (args[charset_arg_name], Vcharset_list); | |
814 | Vcharset_ordered_list = nconc2 (Vcharset_ordered_list, | |
815 | Fcons (make_number (id), Qnil)); | |
816 | } | |
4ed46869 | 817 | |
3263d5a2 | 818 | return Qnil; |
4ed46869 KH |
819 | } |
820 | ||
3263d5a2 KH |
821 | |
822 | DEFUN ("define-charset-alias", Fdefine_charset_alias, | |
823 | Sdefine_charset_alias, 2, 2, 0, | |
824 | doc: /* Define ALIAS as an alias for charset CHARSET. */) | |
825 | (alias, charset) | |
826 | Lisp_Object alias, charset; | |
4ed46869 | 827 | { |
3263d5a2 KH |
828 | Lisp_Object attr; |
829 | ||
830 | CHECK_CHARSET_GET_ATTR (charset, attr); | |
831 | Fputhash (alias, attr, Vcharset_hash_table); | |
832 | return Qnil; | |
833 | } | |
4ed46869 | 834 | |
4ed46869 | 835 | |
3263d5a2 KH |
836 | DEFUN ("primary-charset", Fprimary_charset, Sprimary_charset, 0, 0, 0, |
837 | doc: /* Return the primary charset. */) | |
838 | () | |
839 | { | |
840 | return CHARSET_NAME (CHARSET_FROM_ID (charset_primary)); | |
841 | } | |
4ed46869 | 842 | |
4ed46869 | 843 | |
3263d5a2 KH |
844 | DEFUN ("set-primary-charset", Fset_primary_charset, Sset_primary_charset, |
845 | 1, 1, 0, | |
846 | doc: /* Set the primary charset to CHARSET. */) | |
847 | (charset) | |
848 | Lisp_Object charset; | |
849 | { | |
850 | int id; | |
851 | ||
852 | CHECK_CHARSET_GET_ID (charset, id); | |
853 | charset_primary = id; | |
4ed46869 KH |
854 | return Qnil; |
855 | } | |
856 | ||
3263d5a2 KH |
857 | |
858 | DEFUN ("charset-plist", Fcharset_plist, Scharset_plist, 1, 1, 0, | |
859 | doc: /* Return a property list of CHARSET. */) | |
860 | (charset) | |
861 | Lisp_Object charset; | |
862 | { | |
863 | Lisp_Object attrs; | |
864 | ||
865 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
866 | return CHARSET_ATTR_PLIST (attrs); | |
867 | } | |
868 | ||
869 | ||
870 | DEFUN ("set-charset-plist", Fset_charset_plist, Sset_charset_plist, 2, 2, 0, | |
871 | doc: /* Set CHARSET's property list to PLIST. */) | |
872 | (charset, plist) | |
873 | Lisp_Object charset, plist; | |
874 | { | |
875 | Lisp_Object attrs; | |
876 | ||
877 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
878 | CHARSET_ATTR_PLIST (attrs) = plist; | |
879 | return plist; | |
880 | } | |
881 | ||
882 | ||
883 | DEFUN ("unify-charset", Funify_charset, Sunify_charset, 1, 2, 0, | |
884 | doc: /* Unify characters of CHARSET with Unicode. */) | |
885 | (charset, unify_map) | |
886 | Lisp_Object charset, unify_map; | |
8a73a704 | 887 | { |
3263d5a2 KH |
888 | int id; |
889 | struct charset *cs; | |
890 | ||
891 | CHECK_CHARSET_GET_ID (charset, id); | |
892 | cs = CHARSET_FROM_ID (id); | |
893 | if (CHARSET_METHOD (cs) == CHARSET_METHOD_MAP_DEFERRED) | |
894 | load_charset (cs); | |
895 | if (CHARSET_UNIFIED_P (cs) | |
896 | && CHAR_TABLE_P (CHARSET_DEUNIFIER (cs))) | |
897 | return Qnil; | |
898 | CHARSET_UNIFIED_P (cs) = 0; | |
899 | if (NILP (unify_map)) | |
900 | unify_map = CHARSET_UNIFY_MAP (cs); | |
901 | if (STRINGP (unify_map)) | |
902 | unify_map = load_charset_map (cs, unify_map); | |
903 | parse_charset_map (cs, unify_map, 2); | |
904 | CHARSET_UNIFIED_P (cs) = 1; | |
905 | return Qnil; | |
8a73a704 KH |
906 | } |
907 | ||
3fac5a51 KH |
908 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
909 | Sget_unused_iso_final_char, 2, 2, 0, | |
3263d5a2 KH |
910 | doc: /* |
911 | Return an unsed ISO's final char for a charset of DIMENISION and CHARS. | |
fdb82f93 PJ |
912 | DIMENSION is the number of bytes to represent a character: 1 or 2. |
913 | CHARS is the number of characters in a dimension: 94 or 96. | |
914 | ||
915 | This final char is for private use, thus the range is `0' (48) .. `?' (63). | |
3263d5a2 | 916 | If there's no unused final char for the attrified kind of charset, |
fdb82f93 PJ |
917 | return nil. */) |
918 | (dimension, chars) | |
3fac5a51 KH |
919 | Lisp_Object dimension, chars; |
920 | { | |
921 | int final_char; | |
922 | ||
b7826503 PJ |
923 | CHECK_NUMBER (dimension); |
924 | CHECK_NUMBER (chars); | |
3263d5a2 KH |
925 | if (XINT (dimension) != 1 && XINT (dimension) != 2 && XINT (dimension) != 3) |
926 | args_out_of_range_3 (dimension, make_number (1), make_number (3)); | |
3fac5a51 | 927 | if (XINT (chars) != 94 && XINT (chars) != 96) |
3263d5a2 | 928 | args_out_of_range_3 (chars, make_number (94), make_number (96)); |
3fac5a51 | 929 | for (final_char = '0'; final_char <= '?'; final_char++) |
3263d5a2 KH |
930 | if (ISO_CHARSET_TABLE (XINT (dimension), XINT (chars), final_char) < 0) |
931 | break; | |
3fac5a51 KH |
932 | return (final_char <= '?' ? make_number (final_char) : Qnil); |
933 | } | |
934 | ||
3263d5a2 KH |
935 | static void |
936 | check_iso_charset_parameter (dimension, chars, final_char) | |
937 | Lisp_Object dimension, chars, final_char; | |
4ed46869 | 938 | { |
3263d5a2 KH |
939 | CHECK_NATNUM (dimension); |
940 | CHECK_NATNUM (chars); | |
941 | CHECK_NATNUM (final_char); | |
4ed46869 | 942 | |
3263d5a2 KH |
943 | if (XINT (dimension) > 3) |
944 | error ("Invalid DIMENSION %d, it should be 1, 2, or 3", XINT (dimension)); | |
4ed46869 KH |
945 | if (XINT (chars) != 94 && XINT (chars) != 96) |
946 | error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars)); | |
3263d5a2 | 947 | if (XINT (final_char) < '0' || XINT (final_char) > '~') |
4ed46869 | 948 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars)); |
3263d5a2 KH |
949 | } |
950 | ||
951 | ||
952 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, | |
953 | 4, 4, 0, | |
954 | doc: /* | |
955 | Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET. | |
956 | CHARSET should be defined by `defined-charset' in advance. */) | |
957 | (dimension, chars, final_char, charset) | |
958 | Lisp_Object dimension, chars, final_char, charset; | |
959 | { | |
960 | int id; | |
4ed46869 | 961 | |
3263d5a2 KH |
962 | CHECK_CHARSET_GET_ID (charset, id); |
963 | check_iso_charset_parameter (dimension, chars, final_char); | |
964 | ||
965 | ISO_CHARSET_TABLE (dimension, chars, final_char) = id; | |
4ed46869 KH |
966 | return Qnil; |
967 | } | |
968 | ||
3263d5a2 | 969 | |
2e344af3 KH |
970 | /* Return information about charsets in the text at PTR of NBYTES |
971 | bytes, which are NCHARS characters. The value is: | |
f6302ac9 | 972 | |
cfe34140 | 973 | 0: Each character is represented by one byte. This is always |
3263d5a2 KH |
974 | true for a unibyte string. For a multibyte string, true if |
975 | it contains only ASCII characters. | |
976 | ||
977 | 1: No charsets other than ascii, eight-bit-control, and | |
978 | latin-1 are found. | |
1d67c29b | 979 | |
3263d5a2 KH |
980 | 2: Otherwise. |
981 | */ | |
4ed46869 KH |
982 | |
983 | int | |
3263d5a2 KH |
984 | string_xstring_p (string) |
985 | Lisp_Object string; | |
4ed46869 | 986 | { |
3263d5a2 KH |
987 | unsigned char *p = XSTRING (string)->data; |
988 | unsigned char *endp = p + STRING_BYTES (XSTRING (string)); | |
989 | struct charset *charset; | |
990 | ||
991 | if (XSTRING (string)->size == STRING_BYTES (XSTRING (string))) | |
992 | return 0; | |
993 | ||
994 | charset = CHARSET_FROM_ID (charset_iso_8859_1); | |
995 | while (p < endp) | |
0282eb69 | 996 | { |
3263d5a2 | 997 | int c = STRING_CHAR_ADVANCE (p); |
2e344af3 | 998 | |
3263d5a2 KH |
999 | if (ENCODE_CHAR (charset, c) < 0) |
1000 | return 2; | |
0282eb69 | 1001 | } |
3263d5a2 KH |
1002 | return 1; |
1003 | } | |
05505664 | 1004 | |
05505664 | 1005 | |
3263d5a2 | 1006 | /* Find charsets in the string at PTR of NCHARS and NBYTES. |
4ed46869 | 1007 | |
3263d5a2 KH |
1008 | CHARSETS is a vector. Each element is a cons of CHARSET and |
1009 | FOUND-FLAG. CHARSET is a charset id, and FOUND-FLAG is nil or t. | |
1010 | FOUND-FLAG t (or nil) means that the corresponding charset is | |
1011 | already found (or not yet found). | |
2e344af3 | 1012 | |
3263d5a2 | 1013 | It may lookup a translation table TABLE if supplied. */ |
2e344af3 | 1014 | |
3263d5a2 KH |
1015 | static void |
1016 | find_charsets_in_text (ptr, nchars, nbytes, charsets, table) | |
1017 | unsigned char *ptr; | |
1018 | int nchars, nbytes; | |
1019 | Lisp_Object charsets, table; | |
1020 | { | |
1021 | unsigned char *pend = ptr + nbytes; | |
1022 | int ncharsets = ASIZE (charsets); | |
1023 | ||
1024 | if (nchars == nbytes) | |
1025 | return; | |
1026 | ||
1027 | while (ptr < pend) | |
1028 | { | |
1029 | int c = STRING_CHAR_ADVANCE (ptr); | |
1030 | int i; | |
1031 | int all_found = 1; | |
1032 | Lisp_Object elt; | |
1033 | ||
1034 | if (!NILP (table)) | |
1035 | c = translate_char (table, c); | |
1036 | for (i = 0; i < ncharsets; i++) | |
1037 | { | |
1038 | elt = AREF (charsets, i); | |
1039 | if (NILP (XCDR (elt))) | |
1040 | { | |
1041 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (elt))); | |
1042 | ||
1043 | if (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset)) | |
1044 | XCDR (elt) = Qt; | |
1045 | else | |
1046 | all_found = 0; | |
1047 | } | |
4ed46869 | 1048 | } |
3263d5a2 KH |
1049 | if (all_found) |
1050 | break; | |
4ed46869 | 1051 | } |
4ed46869 KH |
1052 | } |
1053 | ||
3263d5a2 | 1054 | |
4ed46869 | 1055 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, |
23d2a7f1 | 1056 | 2, 3, 0, |
fdb82f93 PJ |
1057 | doc: /* Return a list of charsets in the region between BEG and END. |
1058 | BEG and END are buffer positions. | |
1059 | Optional arg TABLE if non-nil is a translation table to look up. | |
1060 | ||
1061 | If the region contains invalid multibyte characters, | |
1062 | `unknown' is included in the returned list. | |
1063 | ||
1064 | If the current buffer is unibyte, the returned list may contain | |
1065 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) | |
1066 | (beg, end, table) | |
23d2a7f1 | 1067 | Lisp_Object beg, end, table; |
4ed46869 | 1068 | { |
3263d5a2 | 1069 | Lisp_Object charsets; |
6ae1f27e | 1070 | int from, from_byte, to, stop, stop_byte, i; |
4ed46869 KH |
1071 | Lisp_Object val; |
1072 | ||
1073 | validate_region (&beg, &end); | |
1074 | from = XFASTINT (beg); | |
1075 | stop = to = XFASTINT (end); | |
6ae1f27e | 1076 | |
4ed46869 | 1077 | if (from < GPT && GPT < to) |
6ae1f27e RS |
1078 | { |
1079 | stop = GPT; | |
1080 | stop_byte = GPT_BYTE; | |
1081 | } | |
1082 | else | |
1083 | stop_byte = CHAR_TO_BYTE (stop); | |
1084 | ||
1085 | from_byte = CHAR_TO_BYTE (from); | |
1086 | ||
3263d5a2 KH |
1087 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
1088 | for (i = 0; i < charset_table_used; i++) | |
1089 | ASET (charsets, i, Fcons (make_number (i), Qnil)); | |
1090 | ||
4ed46869 KH |
1091 | while (1) |
1092 | { | |
3263d5a2 KH |
1093 | find_charsets_in_text (BYTE_POS_ADDR (from_byte), stop - from, |
1094 | stop_byte - from_byte, charsets, table); | |
4ed46869 | 1095 | if (stop < to) |
6ae1f27e RS |
1096 | { |
1097 | from = stop, from_byte = stop_byte; | |
1098 | stop = to, stop_byte = CHAR_TO_BYTE (stop); | |
1099 | } | |
4ed46869 KH |
1100 | else |
1101 | break; | |
1102 | } | |
6ae1f27e | 1103 | |
4ed46869 | 1104 | val = Qnil; |
3263d5a2 KH |
1105 | for (i = charset_table_used - 1; i >= 0; i--) |
1106 | if (!NILP (XCDR (AREF (charsets, i)))) | |
1107 | val = Fcons (CHARSET_NAME (charset_table + i), val); | |
4ed46869 KH |
1108 | return val; |
1109 | } | |
1110 | ||
1111 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, | |
23d2a7f1 | 1112 | 1, 2, 0, |
fdb82f93 PJ |
1113 | doc: /* Return a list of charsets in STR. |
1114 | Optional arg TABLE if non-nil is a translation table to look up. | |
1115 | ||
1116 | If the string contains invalid multibyte characters, | |
1117 | `unknown' is included in the returned list. | |
1118 | ||
1119 | If STR is unibyte, the returned list may contain | |
3263d5a2 | 1120 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) |
fdb82f93 | 1121 | (str, table) |
23d2a7f1 | 1122 | Lisp_Object str, table; |
4ed46869 | 1123 | { |
3263d5a2 | 1124 | Lisp_Object charsets; |
4ed46869 KH |
1125 | int i; |
1126 | Lisp_Object val; | |
1127 | ||
b7826503 | 1128 | CHECK_STRING (str); |
87b089ad | 1129 | |
3263d5a2 KH |
1130 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
1131 | find_charsets_in_text (XSTRING (str)->data, XSTRING (str)->size, | |
1132 | STRING_BYTES (XSTRING (str)), charsets, table); | |
2e344af3 | 1133 | |
4ed46869 | 1134 | val = Qnil; |
3263d5a2 KH |
1135 | for (i = charset_table_used - 1; i >= 0; i--) |
1136 | if (!NILP (XCDR (AREF (charsets, i)))) | |
1137 | val = Fcons (CHARSET_NAME (charset_table + i), val); | |
4ed46869 KH |
1138 | return val; |
1139 | } | |
2e344af3 | 1140 | |
4ed46869 | 1141 | \f |
3263d5a2 KH |
1142 | |
1143 | /* Return a character correponding to the code-point CODE of | |
1144 | CHARSET. */ | |
1145 | ||
1146 | int | |
1147 | decode_char (charset, code) | |
1148 | struct charset *charset; | |
1149 | unsigned code; | |
4ed46869 | 1150 | { |
3263d5a2 KH |
1151 | int c, char_index; |
1152 | enum charset_method method = CHARSET_METHOD (charset); | |
ac4137cc | 1153 | |
3263d5a2 KH |
1154 | if (code < CHARSET_MIN_CODE (charset) || code > CHARSET_MAX_CODE (charset)) |
1155 | return -1; | |
4ed46869 | 1156 | |
3263d5a2 | 1157 | if (method == CHARSET_METHOD_MAP_DEFERRED) |
ac4137cc | 1158 | { |
3263d5a2 KH |
1159 | load_charset (charset); |
1160 | method = CHARSET_METHOD (charset); | |
ac4137cc | 1161 | } |
4ed46869 | 1162 | |
3263d5a2 | 1163 | if (method == CHARSET_METHOD_INHERIT) |
2e344af3 | 1164 | { |
3263d5a2 | 1165 | Lisp_Object parents; |
4ed46869 | 1166 | |
3263d5a2 KH |
1167 | parents = CHARSET_PARENTS (charset); |
1168 | c = -1; | |
1169 | for (; CONSP (parents); parents = XCDR (parents)) | |
1170 | { | |
1171 | int id = XINT (XCAR (XCAR (parents))); | |
1172 | int code_offset = XINT (XCDR (XCAR (parents))); | |
1173 | unsigned this_code = code + code_offset; | |
9d3d8cba | 1174 | |
3263d5a2 KH |
1175 | charset = CHARSET_FROM_ID (id); |
1176 | if ((c = DECODE_CHAR (charset, this_code)) >= 0) | |
1177 | break; | |
1178 | } | |
1179 | } | |
1180 | else | |
ac4137cc | 1181 | { |
3263d5a2 KH |
1182 | char_index = CODE_POINT_TO_INDEX (charset, code); |
1183 | ||
1184 | if (method == CHARSET_METHOD_MAP) | |
ac4137cc | 1185 | { |
3263d5a2 KH |
1186 | Lisp_Object decoder; |
1187 | ||
1188 | decoder = CHARSET_DECODER (charset); | |
1189 | if (! VECTORP (decoder)) | |
1190 | return -1; | |
1191 | c = XINT (AREF (decoder, char_index)); | |
ac4137cc KH |
1192 | } |
1193 | else | |
1194 | { | |
3263d5a2 | 1195 | c = char_index + CHARSET_CODE_OFFSET (charset); |
ac4137cc KH |
1196 | } |
1197 | } | |
9d3d8cba | 1198 | |
3263d5a2 KH |
1199 | if (CHARSET_UNIFIED_P (charset) |
1200 | && c >= 0) | |
1201 | MAYBE_UNIFY_CHAR (c); | |
d2665018 | 1202 | |
3263d5a2 | 1203 | return c; |
d2665018 KH |
1204 | } |
1205 | ||
1bcc1567 | 1206 | |
3263d5a2 KH |
1207 | /* Return a code-point of CHAR in CHARSET. If CHAR doesn't belong to |
1208 | CHARSET, return CHARSET_INVALID_CODE (CHARSET). */ | |
1bcc1567 | 1209 | |
3263d5a2 KH |
1210 | unsigned |
1211 | encode_char (charset, c) | |
1212 | struct charset *charset; | |
9b6a601f KH |
1213 | int c; |
1214 | { | |
3263d5a2 KH |
1215 | unsigned code; |
1216 | enum charset_method method = CHARSET_METHOD (charset); | |
8ac5a9cc | 1217 | |
3263d5a2 | 1218 | if (CHARSET_UNIFIED_P (charset)) |
4ed46869 | 1219 | { |
3263d5a2 KH |
1220 | Lisp_Object deunifier; |
1221 | int deunified; | |
4ed46869 | 1222 | |
3263d5a2 KH |
1223 | deunifier = CHARSET_DEUNIFIER (charset); |
1224 | if (! CHAR_TABLE_P (deunifier)) | |
1225 | { | |
1226 | Funify_charset (CHARSET_NAME (charset), Qnil); | |
1227 | deunifier = CHARSET_DEUNIFIER (charset); | |
1228 | } | |
1229 | deunified = XINT (CHAR_TABLE_REF (deunifier, c)); | |
1230 | if (deunified > 0) | |
1231 | c = deunified; | |
4ed46869 | 1232 | } |
beeedaad | 1233 | |
3263d5a2 KH |
1234 | if (! CHARSET_FAST_MAP_REF ((c), charset->fast_map) |
1235 | || c < CHARSET_MIN_CHAR (charset) || c > CHARSET_MAX_CHAR (charset)) | |
1236 | return CHARSET_INVALID_CODE (charset); | |
beeedaad | 1237 | |
3263d5a2 | 1238 | if (method == CHARSET_METHOD_INHERIT) |
859f2b3c | 1239 | { |
3263d5a2 | 1240 | Lisp_Object parents; |
859f2b3c | 1241 | |
3263d5a2 KH |
1242 | parents = CHARSET_PARENTS (charset); |
1243 | for (; CONSP (parents); parents = XCDR (parents)) | |
beeedaad | 1244 | { |
3263d5a2 KH |
1245 | int id = XINT (XCAR (XCAR (parents))); |
1246 | int code_offset = XINT (XCDR (XCAR (parents))); | |
1247 | struct charset *this_charset = CHARSET_FROM_ID (id); | |
beeedaad | 1248 | |
3263d5a2 KH |
1249 | code = ENCODE_CHAR (this_charset, c); |
1250 | if (code != CHARSET_INVALID_CODE (this_charset) | |
1251 | && (code_offset < 0 || code >= code_offset)) | |
1252 | { | |
1253 | code -= code_offset; | |
1254 | if (CODE_POINT_TO_INDEX (charset, code) >= 0) | |
1255 | return code; | |
1256 | } | |
beeedaad | 1257 | } |
3263d5a2 KH |
1258 | return CHARSET_INVALID_CODE (charset); |
1259 | } | |
99529c2c | 1260 | |
3263d5a2 | 1261 | if (method == CHARSET_METHOD_MAP_DEFERRED) |
beeedaad | 1262 | { |
3263d5a2 KH |
1263 | load_charset (charset); |
1264 | method = CHARSET_METHOD (charset); | |
859f2b3c | 1265 | } |
beeedaad | 1266 | |
3263d5a2 | 1267 | if (method == CHARSET_METHOD_MAP) |
3f62427c | 1268 | { |
3263d5a2 | 1269 | Lisp_Object encoder; |
beeedaad | 1270 | Lisp_Object val; |
beeedaad | 1271 | |
3263d5a2 KH |
1272 | encoder = CHARSET_ENCODER (charset); |
1273 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
1274 | return CHARSET_INVALID_CODE (charset); | |
1275 | val = CHAR_TABLE_REF (encoder, c); | |
1276 | if (CONSP (val)) | |
1277 | code = (XINT (XCAR (val)) << 16) | XINT (XCDR (val)); | |
3f62427c | 1278 | else |
3263d5a2 KH |
1279 | code = XINT (val); |
1280 | } | |
1281 | else | |
beeedaad | 1282 | { |
3263d5a2 KH |
1283 | code = c - CHARSET_CODE_OFFSET (charset); |
1284 | code = INDEX_TO_CODE_POINT (charset, code); | |
3f62427c | 1285 | } |
beeedaad | 1286 | |
3263d5a2 | 1287 | return code; |
3f62427c KH |
1288 | } |
1289 | ||
4ed46869 | 1290 | |
3263d5a2 KH |
1291 | DEFUN ("decode-char", Fdecode_char, Sdecode_char, 2, 3, 0, |
1292 | doc: /* Decode the pair of CHARSET and CODE-POINT into a character. | |
1293 | Return nil if CODE-POINT is not valid in CHARSET. | |
4ed46869 | 1294 | |
3263d5a2 KH |
1295 | CODE-POINT may be a cons (HIGHER-16-BIT-VALUE . LOWER-16-BIT-VALUE). |
1296 | ||
1297 | Optional argument RESTRICTION specifies a way to map the pair of CCS | |
1298 | and CODE-POINT to a chracter. Currently not supported and just ignored. */) | |
1299 | (charset, code_point, restriction) | |
1300 | Lisp_Object charset, code_point, restriction; | |
4ed46869 | 1301 | { |
3263d5a2 KH |
1302 | int c, id; |
1303 | unsigned code; | |
1304 | struct charset *charsetp; | |
4ed46869 | 1305 | |
3263d5a2 KH |
1306 | CHECK_CHARSET_GET_ID (charset, id); |
1307 | if (CONSP (code_point)) | |
1308 | { | |
1309 | CHECK_NATNUM (XCAR (code_point)); | |
1310 | CHECK_NATNUM (XCDR (code_point)); | |
1311 | code = (XINT (XCAR (code_point)) << 16) | (XINT (XCAR (code_point))); | |
1312 | } | |
1313 | else | |
1314 | { | |
1315 | CHECK_NATNUM (code_point); | |
1316 | code = XINT (code_point); | |
1317 | } | |
1318 | charsetp = CHARSET_FROM_ID (id); | |
1319 | c = DECODE_CHAR (charsetp, code); | |
1320 | return (c >= 0 ? make_number (c) : Qnil); | |
4ed46869 KH |
1321 | } |
1322 | ||
046b1f03 | 1323 | |
3263d5a2 KH |
1324 | DEFUN ("encode-char", Fencode_char, Sencode_char, 2, 3, 0, |
1325 | doc: /* Encode the character CH into a code-point of CHARSET. | |
1326 | Return nil if CHARSET doesn't include CH. | |
17e7ef1b | 1327 | |
3263d5a2 KH |
1328 | Optional argument RESTRICTION specifies a way to map CHAR to a |
1329 | code-point in CCS. Currently not supported and just ignored. */) | |
1330 | (ch, charset, restriction) | |
1331 | Lisp_Object ch, charset, restriction; | |
1332 | { | |
1333 | int c, id; | |
1334 | unsigned code; | |
1335 | struct charset *charsetp; | |
046b1f03 | 1336 | |
3263d5a2 KH |
1337 | CHECK_CHARSET_GET_ID (charset, id); |
1338 | CHECK_NATNUM (ch); | |
1339 | c = XINT (ch); | |
1340 | charsetp = CHARSET_FROM_ID (id); | |
1341 | code = ENCODE_CHAR (charsetp, ch); | |
1342 | if (code == CHARSET_INVALID_CODE (charsetp)) | |
1343 | return Qnil; | |
1344 | if (code > 0x7FFFFFF) | |
1345 | return Fcons (make_number (code >> 16), make_number (code & 0xFFFF)); | |
1346 | return make_number (code); | |
6ae1f27e | 1347 | } |
9036eb45 | 1348 | |
87b089ad | 1349 | |
3263d5a2 KH |
1350 | DEFUN ("make-char", Fmake_char, Smake_char, 1, 4, 0, |
1351 | doc: /* Return a character of CHARSET whose position code is CODE. | |
a8a35e61 | 1352 | |
3263d5a2 KH |
1353 | If dimension of CHARSET is two, and the third optional arg CODE2 is |
1354 | non-nil, CODE actually specifies the first byte of the position code, | |
1355 | and CODE2 specifies the second byte. | |
046b1f03 | 1356 | |
3263d5a2 KH |
1357 | If dimension of CHARSET is three, and the third optional arg CODE2 and |
1358 | the fourth optional arg CODE3 are both non-nil, CODE actually | |
1359 | specifies the first byte of the position code, CODE2 the second byte, | |
1360 | and CODE3 the third byte. */) | |
1361 | (charset, code, code2, code3) | |
1362 | Lisp_Object charset, code, code2, code3; | |
87b089ad | 1363 | { |
3263d5a2 KH |
1364 | int id, dimension; |
1365 | struct charset *charsetp; | |
1366 | unsigned c; | |
87b089ad | 1367 | |
3263d5a2 KH |
1368 | CHECK_CHARSET_GET_ID (charset, id); |
1369 | charsetp = CHARSET_FROM_ID (id); | |
87b089ad | 1370 | |
3263d5a2 KH |
1371 | if (NILP (code)) |
1372 | code = make_number (CHARSET_MIN_CODE (charsetp)); | |
1373 | else | |
87b089ad | 1374 | { |
3263d5a2 KH |
1375 | CHECK_NATNUM (code); |
1376 | dimension = CHARSET_DIMENSION (charsetp); | |
1377 | ||
1378 | if (!NILP (code2)) | |
1379 | { | |
1380 | CHECK_NATNUM (code2); | |
1381 | if (dimension == 3) | |
1382 | CHECK_NATNUM (code3); | |
1383 | } | |
2e344af3 KH |
1384 | } |
1385 | ||
3263d5a2 KH |
1386 | if (dimension == 1 || NILP (code2)) |
1387 | c = XFASTINT (code); | |
1388 | else if (dimension == 2) | |
1389 | c = (XFASTINT (code) << 8) | XFASTINT (code2); | |
1390 | else if (dimension == 3) | |
1391 | c = (XFASTINT (code) << 16) | (XFASTINT (code2) << 8) | XFASTINT (code3); | |
1392 | ||
1393 | c = DECODE_CHAR (charsetp, c); | |
1394 | return make_number (c); | |
2e344af3 KH |
1395 | } |
1396 | ||
3263d5a2 KH |
1397 | |
1398 | /* Return the first charset in CHARSET_LIST that contains C. | |
1399 | CHARSET_LIST is a list of charset IDs. If it is nil, use | |
1400 | Vcharset_ordered_list. */ | |
1401 | ||
1402 | struct charset * | |
1403 | char_charset (c, charset_list, code_return) | |
1404 | int c; | |
1405 | Lisp_Object charset_list; | |
1406 | unsigned *code_return; | |
2e344af3 | 1407 | { |
3263d5a2 KH |
1408 | if (NILP (charset_list)) |
1409 | charset_list = Vcharset_ordered_list; | |
2e344af3 | 1410 | |
3263d5a2 | 1411 | while (CONSP (charset_list)) |
2e344af3 | 1412 | { |
3263d5a2 KH |
1413 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); |
1414 | unsigned code = ENCODE_CHAR (charset, c); | |
1415 | ||
1416 | if (code != CHARSET_INVALID_CODE (charset)) | |
1417 | { | |
1418 | if (code_return) | |
1419 | *code_return = code; | |
1420 | return charset; | |
1421 | } | |
1422 | charset_list = XCDR (charset_list); | |
2e344af3 | 1423 | } |
3263d5a2 | 1424 | return NULL; |
2e344af3 KH |
1425 | } |
1426 | ||
2e344af3 | 1427 | |
3263d5a2 KH |
1428 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, |
1429 | doc: /*Return list of charset and one or two position-codes of CHAR. | |
1430 | If CHAR is invalid as a character code, | |
1431 | return a list of symbol `unknown' and CHAR. */) | |
1432 | (ch) | |
1433 | Lisp_Object ch; | |
2e344af3 | 1434 | { |
3263d5a2 KH |
1435 | struct charset *charset; |
1436 | int c, dimension; | |
1437 | unsigned code; | |
1438 | Lisp_Object val; | |
1439 | ||
1440 | CHECK_CHARACTER (ch); | |
1441 | c = XFASTINT (ch); | |
1442 | charset = CHAR_CHARSET (c); | |
1443 | if (! charset) | |
1444 | return Fcons (intern ("unknown"), Fcons (ch, Qnil)); | |
1445 | ||
1446 | code = ENCODE_CHAR (charset, c); | |
1447 | if (code == CHARSET_INVALID_CODE (charset)) | |
1448 | abort (); | |
1449 | dimension = CHARSET_DIMENSION (charset); | |
1450 | val = (dimension == 1 ? Fcons (make_number (code), Qnil) | |
1451 | : dimension == 2 ? Fcons (make_number (code >> 8), | |
1452 | Fcons (make_number (code & 0xFF), Qnil)) | |
1453 | : Fcons (make_number (code >> 16), | |
1454 | Fcons (make_number ((code >> 8) & 0xFF), | |
1455 | Fcons (make_number (code & 0xFF), Qnil)))); | |
1456 | return Fcons (CHARSET_NAME (charset), val); | |
2e344af3 | 1457 | } |
87b089ad | 1458 | |
740f080d | 1459 | |
3263d5a2 KH |
1460 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0, |
1461 | doc: /* Return the charset of highest priority that contains CHAR. */) | |
1462 | (ch) | |
1463 | Lisp_Object ch; | |
740f080d | 1464 | { |
3263d5a2 | 1465 | struct charset *charset; |
740f080d | 1466 | |
3263d5a2 KH |
1467 | CHECK_CHARACTER (ch); |
1468 | charset = CHAR_CHARSET (XINT (ch)); | |
1469 | return (CHARSET_NAME (charset)); | |
740f080d KH |
1470 | } |
1471 | ||
2e344af3 | 1472 | |
3263d5a2 KH |
1473 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
1474 | doc: /* | |
1475 | Return charset of a character in the current buffer at position POS. | |
1476 | If POS is nil, it defauls to the current point. | |
1477 | If POS is out of range, the value is nil. */) | |
1478 | (pos) | |
1479 | Lisp_Object pos; | |
2e344af3 | 1480 | { |
3263d5a2 KH |
1481 | Lisp_Object ch; |
1482 | struct charset *charset; | |
1483 | ||
1484 | ch = Fchar_after (pos); | |
1485 | if (! INTEGERP (ch)) | |
1486 | return ch; | |
1487 | charset = CHAR_CHARSET (XINT (ch)); | |
1488 | return (CHARSET_NAME (charset)); | |
87b089ad RS |
1489 | } |
1490 | ||
2e344af3 | 1491 | |
3263d5a2 KH |
1492 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
1493 | doc: /* | |
1494 | Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR. | |
1495 | ||
1496 | ISO 2022's designation sequence (escape sequence) distinguishes charsets | |
1497 | by their DIMENSION, CHARS, and FINAL-CHAR, | |
1498 | where as Emacs distinguishes them by charset symbol. | |
1499 | See the documentation of the function `charset-info' for the meanings of | |
1500 | DIMENSION, CHARS, and FINAL-CHAR. */) | |
1501 | (dimension, chars, final_char) | |
1502 | Lisp_Object dimension, chars, final_char; | |
2e344af3 | 1503 | { |
3263d5a2 | 1504 | int id; |
2e344af3 | 1505 | |
3263d5a2 KH |
1506 | check_iso_charset_parameter (dimension, chars, final_char); |
1507 | id = ISO_CHARSET_TABLE (XFASTINT (dimension), XFASTINT (chars), | |
1508 | XFASTINT (final_char)); | |
1509 | return (id >= 0 ? CHARSET_NAME (CHARSET_FROM_ID (id)) : Qnil); | |
2e344af3 KH |
1510 | } |
1511 | ||
3263d5a2 KH |
1512 | |
1513 | DEFUN ("clear-charset-maps", Fclear_charset_maps, Sclear_charset_maps, | |
1514 | 0, 0, 0, | |
1515 | doc: /* | |
1516 | Clear encoder and decoder of charsets that are loaded from mapfiles. */) | |
1517 | () | |
4ed46869 | 1518 | { |
53316e55 | 1519 | int i; |
3263d5a2 KH |
1520 | struct charset *charset; |
1521 | Lisp_Object attrs; | |
4ed46869 | 1522 | |
3263d5a2 | 1523 | for (i = 0; i < charset_table_used; i++) |
4ed46869 | 1524 | { |
3263d5a2 KH |
1525 | charset = CHARSET_FROM_ID (i); |
1526 | attrs = CHARSET_ATTRIBUTES (charset); | |
1527 | ||
1528 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) | |
1529 | { | |
1530 | CHARSET_ATTR_DECODER (attrs) = Qnil; | |
1531 | CHARSET_ATTR_ENCODER (attrs) = Qnil; | |
1532 | CHARSET_METHOD (charset) = CHARSET_METHOD_MAP_DEFERRED; | |
1533 | } | |
1534 | ||
1535 | if (CHARSET_UNIFIED_P (charset)) | |
1536 | CHARSET_ATTR_DEUNIFIER (attrs) = Qnil; | |
5729c92f KH |
1537 | } |
1538 | ||
3263d5a2 | 1539 | if (CHAR_TABLE_P (Vchar_unified_charset_table)) |
5729c92f | 1540 | { |
3263d5a2 KH |
1541 | Foptimize_char_table (Vchar_unified_charset_table); |
1542 | Vchar_unify_table = Vchar_unified_charset_table; | |
1543 | Vchar_unified_charset_table = Qnil; | |
4ed46869 KH |
1544 | } |
1545 | ||
3263d5a2 | 1546 | return Qnil; |
4ed46869 KH |
1547 | } |
1548 | ||
4ed46869 | 1549 | \f |
3263d5a2 KH |
1550 | void |
1551 | init_charset () | |
4ed46869 | 1552 | { |
4ed46869 | 1553 | |
4ed46869 KH |
1554 | } |
1555 | ||
4ed46869 | 1556 | |
dfcf069d | 1557 | void |
4ed46869 KH |
1558 | init_charset_once () |
1559 | { | |
1560 | int i, j, k; | |
1561 | ||
3263d5a2 KH |
1562 | for (i = 0; i < ISO_MAX_DIMENSION; i++) |
1563 | for (j = 0; j < ISO_MAX_CHARS; j++) | |
1564 | for (k = 0; k < ISO_MAX_FINAL; k++) | |
1565 | iso_charset_table[i][j][k] = -1; | |
1566 | ||
1567 | for (i = 0; i < 255; i++) | |
1568 | emacs_mule_charset[i] = NULL; | |
4ed46869 | 1569 | |
3263d5a2 KH |
1570 | #if 0 |
1571 | Vchar_charset_set = Fmake_char_table (Qnil, Qnil); | |
1572 | CHAR_TABLE_SET (Vchar_charset_set, make_number (97), Qnil); | |
1573 | ||
1574 | DEFSYM (Qcharset_encode_table, "charset-encode-table"); | |
4ed46869 KH |
1575 | |
1576 | /* Intern this now in case it isn't already done. | |
1577 | Setting this variable twice is harmless. | |
1578 | But don't staticpro it here--that is done in alloc.c. */ | |
1579 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); | |
1580 | ||
3263d5a2 KH |
1581 | /* Now we are ready to set up this property, so we can create syntax |
1582 | tables. */ | |
1583 | Fput (Qcharset_encode_table, Qchar_table_extra_slots, make_number (0)); | |
1584 | #endif | |
4ed46869 KH |
1585 | } |
1586 | ||
1587 | #ifdef emacs | |
1588 | ||
dfcf069d | 1589 | void |
4ed46869 KH |
1590 | syms_of_charset () |
1591 | { | |
3263d5a2 KH |
1592 | char *p; |
1593 | ||
1594 | DEFSYM (Qcharsetp, "charsetp"); | |
1595 | ||
1596 | DEFSYM (Qascii, "ascii"); | |
1597 | DEFSYM (Qunicode, "unicode"); | |
1598 | DEFSYM (Qeight_bit_control, "eight-bit-control"); | |
1599 | DEFSYM (Qeight_bit_graphic, "eight-bit-graphic"); | |
1600 | DEFSYM (Qiso_8859_1, "iso-8859-1"); | |
1601 | ||
1602 | DEFSYM (Qgl, "gl"); | |
1603 | DEFSYM (Qgr, "gr"); | |
1604 | ||
1605 | p = (char *) xmalloc (30000); | |
1606 | ||
1607 | staticpro (&Vcharset_ordered_list); | |
1608 | Vcharset_ordered_list = Qnil; | |
1609 | ||
1610 | staticpro (&Viso_2022_charset_list); | |
1611 | Viso_2022_charset_list = Qnil; | |
1612 | ||
1613 | staticpro (&Vemacs_mule_charset_list); | |
1614 | Vemacs_mule_charset_list = Qnil; | |
1615 | ||
1616 | staticpro (&Vcharset_hash_table); | |
1617 | Vcharset_hash_table = Fmakehash (Qeq); | |
1618 | ||
1619 | charset_table_size = 128; | |
1620 | charset_table = ((struct charset *) | |
1621 | xmalloc (sizeof (struct charset) * charset_table_size)); | |
1622 | charset_table_used = 0; | |
1623 | ||
1624 | staticpro (&Vchar_unified_charset_table); | |
1625 | Vchar_unified_charset_table = Fmake_char_table (Qnil, make_number (-1)); | |
1626 | ||
1627 | defsubr (&Scharsetp); | |
1628 | defsubr (&Smap_charset_chars); | |
1629 | defsubr (&Sdefine_charset_internal); | |
1630 | defsubr (&Sdefine_charset_alias); | |
1631 | defsubr (&Sprimary_charset); | |
1632 | defsubr (&Sset_primary_charset); | |
1633 | defsubr (&Scharset_plist); | |
1634 | defsubr (&Sset_charset_plist); | |
1635 | defsubr (&Sunify_charset); | |
3fac5a51 | 1636 | defsubr (&Sget_unused_iso_final_char); |
4ed46869 KH |
1637 | defsubr (&Sdeclare_equiv_charset); |
1638 | defsubr (&Sfind_charset_region); | |
1639 | defsubr (&Sfind_charset_string); | |
3263d5a2 KH |
1640 | defsubr (&Sdecode_char); |
1641 | defsubr (&Sencode_char); | |
4ed46869 | 1642 | defsubr (&Ssplit_char); |
3263d5a2 | 1643 | defsubr (&Smake_char); |
4ed46869 | 1644 | defsubr (&Schar_charset); |
90d7b74e | 1645 | defsubr (&Scharset_after); |
4ed46869 | 1646 | defsubr (&Siso_charset); |
3263d5a2 KH |
1647 | defsubr (&Sclear_charset_maps); |
1648 | ||
1649 | DEFVAR_LISP ("charset-map-directory", &Vcharset_map_directory, | |
1650 | doc: /* Directory of charset map files that come with GNU Emacs. | |
1651 | The default value is \"\\[data-directory]/charsets\". */); | |
1652 | Vcharset_map_directory = Fexpand_file_name (build_string ("charsets"), | |
1653 | Vdata_directory); | |
4ed46869 KH |
1654 | |
1655 | DEFVAR_LISP ("charset-list", &Vcharset_list, | |
fdb82f93 | 1656 | doc: /* List of charsets ever defined. */); |
3263d5a2 KH |
1657 | Vcharset_list = Qnil; |
1658 | ||
1659 | /* Make the prerequisite charset `ascii' and `unicode'. */ | |
1660 | { | |
1661 | Lisp_Object args[charset_arg_max]; | |
1662 | Lisp_Object plist[14]; | |
1663 | Lisp_Object val; | |
1664 | ||
1665 | plist[0] = intern (":name"); | |
1666 | plist[1] = args[charset_arg_name] = Qascii; | |
1667 | plist[2] = intern (":dimension"); | |
1668 | plist[3] = args[charset_arg_dimension] = make_number (1); | |
1669 | val = Fmake_vector (make_number (8), make_number (0)); | |
1670 | ASET (val, 1, make_number (127)); | |
1671 | plist[4] = intern (":code-space"); | |
1672 | plist[5] = args[charset_arg_code_space] = val; | |
1673 | plist[6] = intern (":iso-final-char"); | |
1674 | plist[7] = args[charset_arg_iso_final] = make_number ('B'); | |
1675 | args[charset_arg_iso_revision] = Qnil; | |
1676 | plist[8] = intern (":emacs-mule-id"); | |
1677 | plist[9] = args[charset_arg_emacs_mule_id] = make_number (0); | |
1678 | plist[10] = intern (":ascii-compatible-p"); | |
1679 | plist[11] = args[charset_arg_ascii_compatible_p] = Qt; | |
1680 | args[charset_arg_supplementary_p] = Qnil; | |
1681 | args[charset_arg_invalid_code] = Qnil; | |
1682 | plist[12] = intern (":code-offset"); | |
1683 | plist[13] = args[charset_arg_code_offset] = make_number (0); | |
1684 | args[charset_arg_map] = Qnil; | |
1685 | args[charset_arg_parents] = Qnil; | |
1686 | args[charset_arg_unify_map] = Qnil; | |
1687 | /* The actual plist is set by mule-conf.el. */ | |
1688 | args[charset_arg_plist] = Flist (14, plist); | |
1689 | Fdefine_charset_internal (charset_arg_max, args); | |
1690 | charset_ascii = CHARSET_SYMBOL_ID (Qascii); | |
1691 | ||
1692 | plist[1] = args[charset_arg_name] = Qunicode; | |
1693 | plist[3] = args[charset_arg_dimension] = make_number (3); | |
1694 | val = Fmake_vector (make_number (8), make_number (0)); | |
1695 | ASET (val, 1, make_number (255)); | |
1696 | ASET (val, 3, make_number (255)); | |
1697 | ASET (val, 5, make_number (16)); | |
1698 | plist[5] = args[charset_arg_code_space] = val; | |
1699 | plist[7] = args[charset_arg_iso_final] = Qnil; | |
1700 | args[charset_arg_iso_revision] = Qnil; | |
1701 | plist[9] = args[charset_arg_emacs_mule_id] = Qnil; | |
1702 | plist[11] = args[charset_arg_ascii_compatible_p] = Qt; | |
1703 | args[charset_arg_supplementary_p] = Qnil; | |
1704 | args[charset_arg_invalid_code] = Qnil; | |
1705 | plist[13] = args[charset_arg_code_offset] = make_number (0); | |
1706 | args[charset_arg_map] = Qnil; | |
1707 | args[charset_arg_parents] = Qnil; | |
1708 | args[charset_arg_unify_map] = Qnil; | |
1709 | /* The actual plist is set by mule-conf.el. */ | |
1710 | args[charset_arg_plist] = Flist (14, plist); | |
1711 | Fdefine_charset_internal (charset_arg_max, args); | |
1712 | charset_unicode = CHARSET_SYMBOL_ID (Qunicode); | |
1713 | } | |
4ed46869 KH |
1714 | } |
1715 | ||
1716 | #endif /* emacs */ |