Commit | Line | Data |
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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 | 26 | #include <config.h> |
68c45bf0 | 27 | |
4ed46869 | 28 | #include <stdio.h> |
3263d5a2 KH |
29 | #include <unistd.h> |
30 | #include <ctype.h> | |
4ed46869 | 31 | #include <sys/types.h> |
4ed46869 | 32 | #include "lisp.h" |
3263d5a2 | 33 | #include "character.h" |
4ed46869 KH |
34 | #include "charset.h" |
35 | #include "coding.h" | |
fc6b09bf | 36 | #include "disptab.h" |
3263d5a2 | 37 | #include "buffer.h" |
4ed46869 | 38 | |
04c2f2c5 | 39 | /*** GENERAL NOTES on CODED CHARACTER SETS (CHARSETS) *** |
4ed46869 | 40 | |
3263d5a2 | 41 | A coded character set ("charset" hereafter) is a meaningful |
04c2f2c5 | 42 | collection (i.e. language, culture, functionality, etc.) of |
3263d5a2 | 43 | characters. Emacs handles multiple charsets at once. In Emacs Lisp |
04c2f2c5 DL |
44 | code, a charset is represented by a symbol. In C code, a charset is |
45 | represented by its ID number or by a pointer to a struct charset. | |
4ed46869 | 46 | |
3263d5a2 KH |
47 | The actual information about each charset is stored in two places. |
48 | Lispy information is stored in the hash table Vcharset_hash_table as | |
49 | a vector (charset attributes). The other information is stored in | |
04c2f2c5 | 50 | charset_table as a struct charset. |
4ed46869 | 51 | |
3263d5a2 | 52 | */ |
4ed46869 | 53 | |
3263d5a2 KH |
54 | /* List of all charsets. This variable is used only from Emacs |
55 | Lisp. */ | |
4ed46869 KH |
56 | Lisp_Object Vcharset_list; |
57 | ||
3263d5a2 KH |
58 | /* Hash table that contains attributes of each charset. Keys are |
59 | charset symbols, and values are vectors of charset attributes. */ | |
60 | Lisp_Object Vcharset_hash_table; | |
61 | ||
62 | /* Table of struct charset. */ | |
63 | struct charset *charset_table; | |
64 | ||
65 | static int charset_table_size; | |
66 | int charset_table_used; | |
67 | ||
68 | Lisp_Object Qcharsetp; | |
69 | ||
70 | /* Special charset symbols. */ | |
71 | Lisp_Object Qascii; | |
2fe1edd1 | 72 | Lisp_Object Qeight_bit; |
3263d5a2 KH |
73 | Lisp_Object Qiso_8859_1; |
74 | Lisp_Object Qunicode; | |
b0e3cf2b | 75 | |
3263d5a2 KH |
76 | /* The corresponding charsets. */ |
77 | int charset_ascii; | |
2fe1edd1 | 78 | int charset_eight_bit; |
3263d5a2 KH |
79 | int charset_iso_8859_1; |
80 | int charset_unicode; | |
c1a08b4c | 81 | |
7c7dceee KH |
82 | /* The other special charsets. */ |
83 | int charset_jisx0201_roman; | |
84 | int charset_jisx0208_1978; | |
85 | int charset_jisx0208; | |
86 | ||
3263d5a2 KH |
87 | /* Value of charset attribute `charset-iso-plane'. */ |
88 | Lisp_Object Qgl, Qgr; | |
c1a08b4c | 89 | |
d1a04588 KH |
90 | /* Charset of unibyte characters. */ |
91 | int charset_unibyte; | |
3263d5a2 KH |
92 | |
93 | /* List of charsets ordered by the priority. */ | |
94 | Lisp_Object Vcharset_ordered_list; | |
95 | ||
dbbb237d | 96 | /* Incremented everytime we change Vcharset_ordered_list. This is |
64165ae2 | 97 | unsigned short so that it fits in Lisp_Int and never matches |
dbbb237d KH |
98 | -1. */ |
99 | unsigned short charset_ordered_list_tick; | |
100 | ||
3263d5a2 KH |
101 | /* List of iso-2022 charsets. */ |
102 | Lisp_Object Viso_2022_charset_list; | |
103 | ||
104 | /* List of emacs-mule charsets. */ | |
105 | Lisp_Object Vemacs_mule_charset_list; | |
106 | ||
107 | struct charset *emacs_mule_charset[256]; | |
4ed46869 KH |
108 | |
109 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
110 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
3263d5a2 KH |
111 | int iso_charset_table[ISO_MAX_DIMENSION][ISO_MAX_CHARS][ISO_MAX_FINAL]; |
112 | ||
113 | Lisp_Object Vcharset_map_directory; | |
114 | ||
115 | Lisp_Object Vchar_unified_charset_table; | |
116 | ||
64165ae2 DL |
117 | /* Defined in chartab.c */ |
118 | extern void | |
119 | map_char_table_for_charset P_ ((void (*c_function) (Lisp_Object, Lisp_Object), | |
120 | Lisp_Object function, Lisp_Object table, | |
121 | Lisp_Object arg, struct charset *charset, | |
122 | unsigned from, unsigned to)); | |
123 | ||
69f8de5b KH |
124 | #define CODE_POINT_TO_INDEX(charset, code) \ |
125 | ((charset)->code_linear_p \ | |
126 | ? (code) - (charset)->min_code \ | |
127 | : (((charset)->code_space_mask[(code) >> 24] & 0x8) \ | |
128 | && ((charset)->code_space_mask[((code) >> 16) & 0xFF] & 0x4) \ | |
129 | && ((charset)->code_space_mask[((code) >> 8) & 0xFF] & 0x2) \ | |
130 | && ((charset)->code_space_mask[(code) & 0xFF] & 0x1)) \ | |
131 | ? (((((code) >> 24) - (charset)->code_space[12]) \ | |
132 | * (charset)->code_space[11]) \ | |
133 | + (((((code) >> 16) & 0xFF) - (charset)->code_space[8]) \ | |
134 | * (charset)->code_space[7]) \ | |
135 | + (((((code) >> 8) & 0xFF) - (charset)->code_space[4]) \ | |
136 | * (charset)->code_space[3]) \ | |
820ee249 KH |
137 | + (((code) & 0xFF) - (charset)->code_space[0]) \ |
138 | - ((charset)->char_index_offset)) \ | |
3263d5a2 KH |
139 | : -1) |
140 | ||
141 | ||
142 | /* Convert the character index IDX to code-point CODE for CHARSET. | |
143 | It is assumed that IDX is in a valid range. */ | |
144 | ||
820ee249 KH |
145 | #define INDEX_TO_CODE_POINT(charset, idx) \ |
146 | ((charset)->code_linear_p \ | |
147 | ? (idx) + (charset)->min_code \ | |
148 | : (idx += (charset)->char_index_offset, \ | |
149 | (((charset)->code_space[0] + (idx) % (charset)->code_space[2]) \ | |
150 | | (((charset)->code_space[4] \ | |
151 | + ((idx) / (charset)->code_space[3] % (charset)->code_space[6])) \ | |
152 | << 8) \ | |
153 | | (((charset)->code_space[8] \ | |
154 | + ((idx) / (charset)->code_space[7] % (charset)->code_space[10])) \ | |
155 | << 16) \ | |
156 | | (((charset)->code_space[12] + ((idx) / (charset)->code_space[11])) \ | |
157 | << 24)))) | |
158 | ||
4ed46869 | 159 | |
3263d5a2 | 160 | \f |
4ed46869 | 161 | |
e9ce014c KH |
162 | /* Set to 1 to warn that a charset map is loaded and thus a buffer |
163 | text and a string data may be relocated. */ | |
3263d5a2 | 164 | int charset_map_loaded; |
35e623fb | 165 | |
e9ce014c KH |
166 | struct charset_map_entries |
167 | { | |
168 | struct { | |
169 | unsigned from, to; | |
170 | int c; | |
171 | } entry[0x10000]; | |
172 | struct charset_map_entries *next; | |
173 | }; | |
174 | ||
175 | /* Load the mapping information for CHARSET from ENTRIES. | |
4cf9710d | 176 | |
3263d5a2 | 177 | If CONTROL_FLAG is 0, setup CHARSET->min_char and CHARSET->max_char. |
8a73a704 | 178 | |
3263d5a2 KH |
179 | If CONTROL_FLAG is 1, setup CHARSET->min_char, CHARSET->max_char, |
180 | CHARSET->decoder, and CHARSET->encoder. | |
93bcb785 | 181 | |
3263d5a2 KH |
182 | If CONTROL_FLAG is 2, setup CHARSET->deunifier and |
183 | Vchar_unify_table. If Vchar_unified_charset_table is non-nil, | |
184 | setup it too. */ | |
4ed46869 | 185 | |
3263d5a2 | 186 | static void |
e9ce014c | 187 | load_charset_map (charset, entries, n_entries, control_flag) |
3263d5a2 | 188 | struct charset *charset; |
e9ce014c KH |
189 | struct charset_map_entries *entries; |
190 | int n_entries; | |
3263d5a2 | 191 | int control_flag; |
4ed46869 | 192 | { |
3263d5a2 | 193 | Lisp_Object vec, table; |
3263d5a2 KH |
194 | unsigned max_code = CHARSET_MAX_CODE (charset); |
195 | int ascii_compatible_p = charset->ascii_compatible_p; | |
196 | int min_char, max_char, nonascii_min_char; | |
3263d5a2 | 197 | int i; |
3263d5a2 | 198 | unsigned char *fast_map = charset->fast_map; |
99529c2c | 199 | |
e9ce014c KH |
200 | if (n_entries <= 0) |
201 | return; | |
202 | ||
203 | if (control_flag > 0) | |
8ac5a9cc | 204 | { |
3263d5a2 | 205 | int n = CODE_POINT_TO_INDEX (charset, max_code) + 1; |
6662e69b | 206 | |
374c5cfd | 207 | table = Fmake_char_table (Qnil, Qnil); |
3263d5a2 KH |
208 | if (control_flag == 1) |
209 | vec = Fmake_vector (make_number (n), make_number (-1)); | |
210 | else if (! CHAR_TABLE_P (Vchar_unify_table)) | |
374c5cfd | 211 | Vchar_unify_table = Fmake_char_table (Qnil, Qnil); |
6662e69b | 212 | |
3263d5a2 | 213 | charset_map_loaded = 1; |
2e344af3 | 214 | } |
3263d5a2 | 215 | |
e9ce014c | 216 | min_char = max_char = entries->entry[0].c; |
3263d5a2 | 217 | nonascii_min_char = MAX_CHAR; |
e9ce014c | 218 | for (i = 0; i < n_entries; i++) |
2e344af3 | 219 | { |
e9ce014c | 220 | unsigned from, to; |
3b4f4446 KH |
221 | int from_index, to_index; |
222 | int from_c, to_c; | |
e9ce014c | 223 | int idx = i % 0x10000; |
3263d5a2 | 224 | |
e9ce014c KH |
225 | if (i > 0 && idx == 0) |
226 | entries = entries->next; | |
227 | from = entries->entry[idx].from; | |
228 | to = entries->entry[idx].to; | |
3b4f4446 KH |
229 | from_c = entries->entry[idx].c; |
230 | from_index = CODE_POINT_TO_INDEX (charset, from); | |
231 | if (from == to) | |
232 | { | |
233 | to_index = from_index; | |
234 | to_c = from_c; | |
235 | } | |
236 | else | |
237 | { | |
238 | to_index = CODE_POINT_TO_INDEX (charset, to); | |
239 | to_c = from_c + (to_index - from_index); | |
240 | } | |
241 | if (from_index < 0 || to_index < 0) | |
242 | continue; | |
3263d5a2 | 243 | |
3263d5a2 KH |
244 | if (control_flag < 2) |
245 | { | |
3b4f4446 KH |
246 | int c; |
247 | ||
248 | if (to_c > max_char) | |
249 | max_char = to_c; | |
250 | else if (from_c < min_char) | |
251 | min_char = from_c; | |
252 | if (ascii_compatible_p) | |
253 | { | |
254 | if (! ASCII_BYTE_P (from_c)) | |
255 | { | |
256 | if (from_c < nonascii_min_char) | |
257 | nonascii_min_char = from_c; | |
258 | } | |
259 | else if (! ASCII_BYTE_P (to_c)) | |
260 | { | |
261 | nonascii_min_char = 0x80; | |
262 | } | |
263 | } | |
264 | ||
265 | for (c = from_c; c <= to_c; c++) | |
266 | CHARSET_FAST_MAP_SET (c, fast_map); | |
267 | ||
e9ce014c | 268 | if (control_flag == 1) |
3263d5a2 | 269 | { |
e9ce014c | 270 | unsigned code = from; |
e9ce014c | 271 | |
e9ce014c KH |
272 | if (CHARSET_COMPACT_CODES_P (charset)) |
273 | while (1) | |
274 | { | |
3b4f4446 KH |
275 | ASET (vec, from_index, make_number (from_c)); |
276 | CHAR_TABLE_SET (table, from_c, make_number (code)); | |
e9ce014c KH |
277 | if (from_index == to_index) |
278 | break; | |
3b4f4446 | 279 | from_index++, from_c++; |
e9ce014c KH |
280 | code = INDEX_TO_CODE_POINT (charset, from_index); |
281 | } | |
282 | else | |
3b4f4446 | 283 | for (; from_index <= to_index; from_index++, from_c++) |
e9ce014c | 284 | { |
3b4f4446 KH |
285 | ASET (vec, from_index, make_number (from_c)); |
286 | CHAR_TABLE_SET (table, from_c, make_number (from_index)); | |
e9ce014c | 287 | } |
3263d5a2 | 288 | } |
3263d5a2 | 289 | } |
e9ce014c | 290 | else |
2e344af3 | 291 | { |
69f8de5b | 292 | unsigned code = from; |
3b4f4446 | 293 | |
69f8de5b KH |
294 | while (1) |
295 | { | |
296 | int c1 = DECODE_CHAR (charset, code); | |
297 | ||
3263d5a2 KH |
298 | if (c1 >= 0) |
299 | { | |
3b4f4446 | 300 | CHAR_TABLE_SET (table, from_c, make_number (c1)); |
16fed1fc | 301 | CHAR_TABLE_SET (Vchar_unify_table, c1, make_number (from_c)); |
3263d5a2 KH |
302 | if (CHAR_TABLE_P (Vchar_unified_charset_table)) |
303 | CHAR_TABLE_SET (Vchar_unified_charset_table, c1, | |
304 | CHARSET_NAME (charset)); | |
305 | } | |
69f8de5b KH |
306 | if (from_index == to_index) |
307 | break; | |
3b4f4446 | 308 | from_index++, from_c++; |
69f8de5b | 309 | code = INDEX_TO_CODE_POINT (charset, from_index); |
3263d5a2 | 310 | } |
2e344af3 | 311 | } |
8ac5a9cc | 312 | } |
3263d5a2 KH |
313 | |
314 | if (control_flag < 2) | |
4ed46869 | 315 | { |
3263d5a2 KH |
316 | CHARSET_MIN_CHAR (charset) = (ascii_compatible_p |
317 | ? nonascii_min_char : min_char); | |
318 | CHARSET_MAX_CHAR (charset) = max_char; | |
e9ce014c | 319 | if (control_flag == 1) |
4ed46869 | 320 | { |
3263d5a2 KH |
321 | CHARSET_DECODER (charset) = vec; |
322 | CHARSET_ENCODER (charset) = table; | |
4ed46869 KH |
323 | } |
324 | } | |
2e344af3 | 325 | else |
3263d5a2 | 326 | CHARSET_DEUNIFIER (charset) = table; |
4ed46869 KH |
327 | } |
328 | ||
12bcae05 | 329 | |
3263d5a2 KH |
330 | /* Read a hexadecimal number (preceded by "0x") from the file FP while |
331 | paying attention to comment charcter '#'. */ | |
12bcae05 | 332 | |
3263d5a2 KH |
333 | static INLINE unsigned |
334 | read_hex (fp, eof) | |
335 | FILE *fp; | |
336 | int *eof; | |
12bcae05 | 337 | { |
3263d5a2 KH |
338 | int c; |
339 | unsigned n; | |
12bcae05 | 340 | |
3263d5a2 KH |
341 | while ((c = getc (fp)) != EOF) |
342 | { | |
69f8de5b | 343 | if (c == '#') |
3263d5a2 KH |
344 | { |
345 | while ((c = getc (fp)) != EOF && c != '\n'); | |
346 | } | |
347 | else if (c == '0') | |
348 | { | |
349 | if ((c = getc (fp)) == EOF || c == 'x') | |
350 | break; | |
351 | } | |
352 | } | |
353 | if (c == EOF) | |
354 | { | |
355 | *eof = 1; | |
356 | return 0; | |
357 | } | |
358 | *eof = 0; | |
359 | n = 0; | |
360 | if (c == 'x') | |
361 | while ((c = getc (fp)) != EOF && isxdigit (c)) | |
362 | n = ((n << 4) | |
363 | | (c <= '9' ? c - '0' : c <= 'F' ? c - 'A' + 10 : c - 'a' + 10)); | |
364 | else | |
365 | while ((c = getc (fp)) != EOF && isdigit (c)) | |
366 | n = (n * 10) + c - '0'; | |
e9ce014c KH |
367 | if (c != EOF) |
368 | ungetc (c, fp); | |
3263d5a2 KH |
369 | return n; |
370 | } | |
12bcae05 | 371 | |
537efd8d | 372 | |
3263d5a2 | 373 | /* Return a mapping vector for CHARSET loaded from MAPFILE. |
e9ce014c KH |
374 | Each line of MAPFILE has this form |
375 | 0xAAAA 0xCCCC | |
376 | where 0xAAAA is a code-point and 0xCCCC is the corresponding | |
377 | character code, or this form | |
378 | 0xAAAA-0xBBBB 0xCCCC | |
379 | where 0xAAAA and 0xBBBB are code-points specifying a range, and | |
380 | 0xCCCC is the first character code of the range. | |
381 | ||
3263d5a2 KH |
382 | The returned vector has this form: |
383 | [ CODE1 CHAR1 CODE2 CHAR2 .... ] | |
e9ce014c KH |
384 | where CODE1 is a code-point or a cons of code-points specifying a |
385 | range. */ | |
4ed46869 | 386 | |
c449997d KH |
387 | extern void add_to_log P_ ((char *, Lisp_Object, Lisp_Object)); |
388 | ||
e9ce014c KH |
389 | static void |
390 | load_charset_map_from_file (charset, mapfile, control_flag) | |
3263d5a2 KH |
391 | struct charset *charset; |
392 | Lisp_Object mapfile; | |
e9ce014c | 393 | int control_flag; |
4ed46869 | 394 | { |
e9ce014c KH |
395 | unsigned min_code = CHARSET_MIN_CODE (charset); |
396 | unsigned max_code = CHARSET_MAX_CODE (charset); | |
3263d5a2 KH |
397 | int fd; |
398 | FILE *fp; | |
3263d5a2 KH |
399 | int eof; |
400 | Lisp_Object suffixes; | |
e9ce014c KH |
401 | struct charset_map_entries *head, *entries; |
402 | int n_entries; | |
4ed46869 | 403 | |
3263d5a2 KH |
404 | suffixes = Fcons (build_string (".map"), |
405 | Fcons (build_string (".TXT"), Qnil)); | |
4ed46869 | 406 | |
3263d5a2 KH |
407 | fd = openp (Fcons (Vcharset_map_directory, Qnil), mapfile, suffixes, |
408 | NULL, 0); | |
409 | if (fd < 0 | |
410 | || ! (fp = fdopen (fd, "r"))) | |
411 | { | |
412 | add_to_log ("Failure in loading charset map: %S", mapfile, Qnil); | |
e9ce014c | 413 | return; |
3263d5a2 | 414 | } |
4ed46869 | 415 | |
e9ce014c KH |
416 | head = entries = ((struct charset_map_entries *) |
417 | alloca (sizeof (struct charset_map_entries))); | |
418 | n_entries = 0; | |
3263d5a2 KH |
419 | eof = 0; |
420 | while (1) | |
421 | { | |
e9ce014c KH |
422 | unsigned from, to; |
423 | int c; | |
424 | int idx; | |
4ed46869 | 425 | |
e9ce014c | 426 | from = read_hex (fp, &eof); |
3263d5a2 KH |
427 | if (eof) |
428 | break; | |
e9ce014c KH |
429 | if (getc (fp) == '-') |
430 | to = read_hex (fp, &eof); | |
431 | else | |
432 | to = from; | |
433 | c = (int) read_hex (fp, &eof); | |
434 | ||
435 | if (from < min_code || to > max_code || from > to || c > MAX_CHAR) | |
436 | continue; | |
437 | ||
438 | if (n_entries > 0 && (n_entries % 0x10000) == 0) | |
3263d5a2 | 439 | { |
e9ce014c KH |
440 | entries->next = ((struct charset_map_entries *) |
441 | alloca (sizeof (struct charset_map_entries))); | |
442 | entries = entries->next; | |
3263d5a2 | 443 | } |
e9ce014c KH |
444 | idx = n_entries % 0x10000; |
445 | entries->entry[idx].from = from; | |
446 | entries->entry[idx].to = to; | |
447 | entries->entry[idx].c = c; | |
448 | n_entries++; | |
3263d5a2 KH |
449 | } |
450 | fclose (fp); | |
451 | close (fd); | |
4ed46869 | 452 | |
e9ce014c KH |
453 | load_charset_map (charset, head, n_entries, control_flag); |
454 | } | |
455 | ||
456 | static void | |
457 | load_charset_map_from_vector (charset, vec, control_flag) | |
458 | struct charset *charset; | |
459 | Lisp_Object vec; | |
460 | int control_flag; | |
461 | { | |
462 | unsigned min_code = CHARSET_MIN_CODE (charset); | |
463 | unsigned max_code = CHARSET_MAX_CODE (charset); | |
464 | struct charset_map_entries *head, *entries; | |
465 | int n_entries; | |
466 | int len = ASIZE (vec); | |
467 | int i; | |
468 | ||
469 | if (len % 2 == 1) | |
3263d5a2 | 470 | { |
e9ce014c KH |
471 | add_to_log ("Failure in loading charset map: %V", vec, Qnil); |
472 | return; | |
3263d5a2 | 473 | } |
4ed46869 | 474 | |
e9ce014c KH |
475 | head = entries = ((struct charset_map_entries *) |
476 | alloca (sizeof (struct charset_map_entries))); | |
477 | n_entries = 0; | |
478 | for (i = 0; i < len; i += 2) | |
479 | { | |
480 | Lisp_Object val, val2; | |
481 | unsigned from, to; | |
482 | int c; | |
483 | int idx; | |
3263d5a2 | 484 | |
e9ce014c KH |
485 | val = AREF (vec, i); |
486 | if (CONSP (val)) | |
487 | { | |
488 | val2 = XCDR (val); | |
489 | val = XCAR (val); | |
490 | CHECK_NATNUM (val); | |
491 | CHECK_NATNUM (val2); | |
492 | from = XFASTINT (val); | |
493 | to = XFASTINT (val2); | |
494 | } | |
495 | else | |
496 | { | |
497 | CHECK_NATNUM (val); | |
498 | from = to = XFASTINT (val); | |
499 | } | |
500 | val = AREF (vec, i + 1); | |
501 | CHECK_NATNUM (val); | |
502 | c = XFASTINT (val); | |
503 | ||
504 | if (from < min_code || to > max_code || from > to || c > MAX_CHAR) | |
505 | continue; | |
506 | ||
507 | if ((n_entries % 0x10000) == 0) | |
508 | { | |
509 | entries->next = ((struct charset_map_entries *) | |
510 | alloca (sizeof (struct charset_map_entries))); | |
511 | entries = entries->next; | |
512 | } | |
513 | idx = n_entries % 0x10000; | |
514 | entries->entry[idx].from = from; | |
515 | entries->entry[idx].to = to; | |
516 | entries->entry[idx].c = c; | |
517 | n_entries++; | |
518 | } | |
519 | ||
520 | load_charset_map (charset, head, n_entries, control_flag); | |
ac4137cc KH |
521 | } |
522 | ||
3263d5a2 KH |
523 | static void |
524 | load_charset (charset) | |
525 | struct charset *charset; | |
ac4137cc | 526 | { |
3263d5a2 KH |
527 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP_DEFERRED) |
528 | { | |
529 | Lisp_Object map; | |
ac4137cc | 530 | |
3263d5a2 KH |
531 | map = CHARSET_MAP (charset); |
532 | if (STRINGP (map)) | |
e9ce014c KH |
533 | load_charset_map_from_file (charset, map, 1); |
534 | else | |
535 | load_charset_map_from_vector (charset, map, 1); | |
3263d5a2 KH |
536 | CHARSET_METHOD (charset) = CHARSET_METHOD_MAP; |
537 | } | |
4ed46869 KH |
538 | } |
539 | ||
3263d5a2 KH |
540 | |
541 | DEFUN ("charsetp", Fcharsetp, Scharsetp, 1, 1, 0, | |
542 | doc: /* Return non-nil if and only if OBJECT is a charset.*/) | |
543 | (object) | |
544 | Lisp_Object object; | |
23d2a7f1 | 545 | { |
3263d5a2 | 546 | return (CHARSETP (object) ? Qt : Qnil); |
23d2a7f1 KH |
547 | } |
548 | ||
35e623fb | 549 | |
3263d5a2 | 550 | void |
374c5cfd KH |
551 | map_charset_chars (c_function, function, arg, |
552 | charset, from, to) | |
553 | void (*c_function) P_ ((Lisp_Object, Lisp_Object)); | |
554 | Lisp_Object function, arg; | |
555 | struct charset *charset; | |
556 | unsigned from, to; | |
557 | ||
35e623fb | 558 | { |
3263d5a2 | 559 | Lisp_Object range; |
374c5cfd | 560 | int partial; |
3263d5a2 KH |
561 | |
562 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP_DEFERRED) | |
563 | load_charset (charset); | |
564 | ||
374c5cfd KH |
565 | partial = (from > CHARSET_MIN_CODE (charset) |
566 | || to < CHARSET_MAX_CODE (charset)); | |
567 | ||
568 | if (CHARSET_UNIFIED_P (charset) | |
569 | && CHAR_TABLE_P (CHARSET_DEUNIFIER (charset))) | |
570 | { | |
571 | map_char_table_for_charset (c_function, function, | |
572 | CHARSET_DEUNIFIER (charset), arg, | |
573 | partial ? charset : NULL, from, to); | |
574 | } | |
575 | ||
3263d5a2 KH |
576 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_OFFSET) |
577 | { | |
374c5cfd KH |
578 | int from_idx = CODE_POINT_TO_INDEX (charset, from); |
579 | int to_idx = CODE_POINT_TO_INDEX (charset, to); | |
580 | int from_c = from_idx + CHARSET_CODE_OFFSET (charset); | |
581 | int to_c = to_idx + CHARSET_CODE_OFFSET (charset); | |
582 | ||
583 | range = Fcons (make_number (from_c), make_number (to_c)); | |
3263d5a2 | 584 | if (NILP (function)) |
374c5cfd | 585 | (*c_function) (range, arg); |
3263d5a2 KH |
586 | else |
587 | call2 (function, range, arg); | |
588 | } | |
589 | else if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) | |
590 | { | |
591 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
592 | return; | |
374c5cfd | 593 | if (CHARSET_ASCII_COMPATIBLE_P (charset) && from <= 127) |
bbf12bb3 | 594 | { |
374c5cfd KH |
595 | range = Fcons (make_number (from), make_number (to)); |
596 | if (to >= 128) | |
597 | XSETCAR (range, make_number (127)); | |
598 | ||
3263d5a2 | 599 | if (NILP (function)) |
374c5cfd | 600 | (*c_function) (range, arg); |
3263d5a2 KH |
601 | else |
602 | call2 (function, range, arg); | |
bbf12bb3 | 603 | } |
374c5cfd KH |
604 | map_char_table_for_charset (c_function, function, |
605 | CHARSET_ENCODER (charset), arg, | |
606 | partial ? charset : NULL, from, to); | |
3263d5a2 | 607 | } |
374c5cfd | 608 | else if (CHARSET_METHOD (charset) == CHARSET_METHOD_SUBSET) |
3263d5a2 | 609 | { |
374c5cfd KH |
610 | Lisp_Object subset_info; |
611 | int offset; | |
612 | ||
613 | subset_info = CHARSET_SUBSET (charset); | |
614 | charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
615 | offset = XINT (AREF (subset_info, 3)); | |
616 | from -= offset; | |
617 | if (from < XFASTINT (AREF (subset_info, 1))) | |
618 | from = XFASTINT (AREF (subset_info, 1)); | |
619 | to -= offset; | |
620 | if (to > XFASTINT (AREF (subset_info, 2))) | |
621 | to = XFASTINT (AREF (subset_info, 2)); | |
622 | map_charset_chars (c_function, function, arg, charset, from, to); | |
623 | } | |
624 | else /* i.e. CHARSET_METHOD_SUPERSET */ | |
625 | { | |
626 | Lisp_Object parents; | |
3263d5a2 | 627 | |
374c5cfd KH |
628 | for (parents = CHARSET_SUPERSET (charset); CONSP (parents); |
629 | parents = XCDR (parents)) | |
bbf12bb3 | 630 | { |
374c5cfd KH |
631 | int offset; |
632 | unsigned this_from, this_to; | |
633 | ||
634 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (XCAR (parents)))); | |
635 | offset = XINT (XCDR (XCAR (parents))); | |
636 | this_from = from - offset; | |
637 | this_to = to - offset; | |
638 | if (this_from < CHARSET_MIN_CODE (charset)) | |
639 | this_from = CHARSET_MIN_CODE (charset); | |
640 | if (this_to > CHARSET_MAX_CODE (charset)) | |
641 | this_to = CHARSET_MAX_CODE (charset); | |
642 | map_charset_chars (c_function, function, arg, charset, from, to); | |
bbf12bb3 | 643 | } |
35e623fb | 644 | } |
3263d5a2 KH |
645 | } |
646 | ||
374c5cfd KH |
647 | |
648 | DEFUN ("map-charset-chars", Fmap_charset_chars, Smap_charset_chars, 2, 5, 0, | |
04c2f2c5 | 649 | doc: /* Call FUNCTION for all characters in CHARSET. |
374c5cfd | 650 | FUNCTION is called with an argument RANGE and the optional 3rd |
3263d5a2 | 651 | argument ARG. |
6abd9323 | 652 | |
374c5cfd KH |
653 | RANGE is a cons (FROM . TO), where FROM and TO indicate a range of |
654 | characters contained in CHARSET. | |
655 | ||
656 | The optional 4th and 5th arguments FROM-CODE and TO-CODE specify the | |
657 | range of code points of targer characters. */) | |
658 | (function, charset, arg, from_code, to_code) | |
659 | Lisp_Object function, charset, arg, from_code, to_code; | |
3263d5a2 | 660 | { |
374c5cfd | 661 | struct charset *cs; |
16fed1fc | 662 | unsigned from, to; |
374c5cfd KH |
663 | |
664 | CHECK_CHARSET_GET_CHARSET (charset, cs); | |
665 | if (NILP (from_code)) | |
16fed1fc | 666 | from = CHARSET_MIN_CODE (cs); |
970b7474 KH |
667 | else |
668 | { | |
669 | CHECK_NATNUM (from_code); | |
670 | from = XINT (from_code); | |
671 | if (from < CHARSET_MIN_CODE (cs)) | |
672 | from = CHARSET_MIN_CODE (cs); | |
673 | } | |
374c5cfd | 674 | if (NILP (to_code)) |
970b7474 KH |
675 | to = CHARSET_MAX_CODE (cs); |
676 | else | |
677 | { | |
678 | CHECK_NATNUM (to_code); | |
679 | to = XINT (to_code); | |
680 | if (to > CHARSET_MAX_CODE (cs)) | |
681 | to = CHARSET_MAX_CODE (cs); | |
682 | } | |
16fed1fc | 683 | map_charset_chars (NULL, function, arg, cs, from, to); |
3263d5a2 | 684 | return Qnil; |
35e623fb | 685 | } |
76d7b829 KH |
686 | |
687 | ||
3263d5a2 KH |
688 | /* Define a charset according to the arguments. The Nth argument is |
689 | the Nth attribute of the charset (the last attribute `charset-id' | |
690 | is not included). See the docstring of `define-charset' for the | |
691 | detail. */ | |
76d7b829 | 692 | |
3263d5a2 KH |
693 | DEFUN ("define-charset-internal", Fdefine_charset_internal, |
694 | Sdefine_charset_internal, charset_arg_max, MANY, 0, | |
04c2f2c5 DL |
695 | doc: /* For internal use only. |
696 | usage: (define-charset-internal ...) */) | |
3263d5a2 KH |
697 | (nargs, args) |
698 | int nargs; | |
699 | Lisp_Object *args; | |
76d7b829 | 700 | { |
3263d5a2 KH |
701 | /* Charset attr vector. */ |
702 | Lisp_Object attrs; | |
703 | Lisp_Object val; | |
704 | unsigned hash_code; | |
705 | struct Lisp_Hash_Table *hash_table = XHASH_TABLE (Vcharset_hash_table); | |
69f8de5b | 706 | int i, j; |
3263d5a2 KH |
707 | struct charset charset; |
708 | int id; | |
709 | int dimension; | |
710 | int new_definition_p; | |
711 | int nchars; | |
712 | ||
713 | if (nargs != charset_arg_max) | |
714 | return Fsignal (Qwrong_number_of_arguments, | |
715 | Fcons (intern ("define-charset-internal"), | |
716 | make_number (nargs))); | |
717 | ||
718 | attrs = Fmake_vector (make_number (charset_attr_max), Qnil); | |
719 | ||
720 | CHECK_SYMBOL (args[charset_arg_name]); | |
721 | ASET (attrs, charset_name, args[charset_arg_name]); | |
722 | ||
723 | val = args[charset_arg_code_space]; | |
724 | for (i = 0, dimension = 0, nchars = 1; i < 4; i++) | |
76d7b829 | 725 | { |
3263d5a2 KH |
726 | int min_byte, max_byte; |
727 | ||
728 | min_byte = XINT (Faref (val, make_number (i * 2))); | |
729 | max_byte = XINT (Faref (val, make_number (i * 2 + 1))); | |
730 | if (min_byte < 0 || min_byte > max_byte || max_byte >= 256) | |
731 | error ("Invalid :code-space value"); | |
732 | charset.code_space[i * 4] = min_byte; | |
733 | charset.code_space[i * 4 + 1] = max_byte; | |
734 | charset.code_space[i * 4 + 2] = max_byte - min_byte + 1; | |
735 | nchars *= charset.code_space[i * 4 + 2]; | |
736 | charset.code_space[i * 4 + 3] = nchars; | |
737 | if (max_byte > 0) | |
738 | dimension = i + 1; | |
739 | } | |
76d7b829 | 740 | |
3263d5a2 KH |
741 | val = args[charset_arg_dimension]; |
742 | if (NILP (val)) | |
743 | charset.dimension = dimension; | |
744 | else | |
745 | { | |
746 | CHECK_NATNUM (val); | |
747 | charset.dimension = XINT (val); | |
748 | if (charset.dimension < 1 || charset.dimension > 4) | |
749 | args_out_of_range_3 (val, make_number (1), make_number (4)); | |
750 | } | |
751 | ||
752 | charset.code_linear_p | |
753 | = (charset.dimension == 1 | |
754 | || (charset.code_space[2] == 256 | |
755 | && (charset.dimension == 2 | |
756 | || (charset.code_space[6] == 256 | |
757 | && (charset.dimension == 3 | |
758 | || charset.code_space[10] == 256))))); | |
759 | ||
69f8de5b KH |
760 | if (! charset.code_linear_p) |
761 | { | |
762 | charset.code_space_mask = (unsigned char *) xmalloc (256); | |
33df3183 | 763 | bzero (charset.code_space_mask, 256); |
69f8de5b KH |
764 | for (i = 0; i < 4; i++) |
765 | for (j = charset.code_space[i * 4]; j <= charset.code_space[i * 4 + 1]; | |
766 | j++) | |
767 | charset.code_space_mask[j] |= (1 << i); | |
768 | } | |
769 | ||
3263d5a2 KH |
770 | charset.iso_chars_96 = charset.code_space[2] == 96; |
771 | ||
772 | charset.min_code = (charset.code_space[0] | |
773 | | (charset.code_space[4] << 8) | |
774 | | (charset.code_space[8] << 16) | |
775 | | (charset.code_space[12] << 24)); | |
776 | charset.max_code = (charset.code_space[1] | |
777 | | (charset.code_space[5] << 8) | |
778 | | (charset.code_space[9] << 16) | |
779 | | (charset.code_space[13] << 24)); | |
820ee249 KH |
780 | charset.char_index_offset = 0; |
781 | ||
782 | val = args[charset_arg_min_code]; | |
783 | if (! NILP (val)) | |
784 | { | |
785 | unsigned code; | |
786 | ||
787 | if (INTEGERP (val)) | |
788 | code = XINT (val); | |
789 | else | |
790 | { | |
791 | CHECK_CONS (val); | |
792 | CHECK_NUMBER (XCAR (val)); | |
793 | CHECK_NUMBER (XCDR (val)); | |
794 | code = (XINT (XCAR (val)) << 16) | (XINT (XCDR (val))); | |
795 | } | |
796 | if (code < charset.min_code | |
797 | || code > charset.max_code) | |
798 | args_out_of_range_3 (make_number (charset.min_code), | |
799 | make_number (charset.max_code), val); | |
800 | charset.char_index_offset = CODE_POINT_TO_INDEX (&charset, code); | |
801 | charset.min_code = code; | |
802 | } | |
803 | ||
804 | val = args[charset_arg_max_code]; | |
805 | if (! NILP (val)) | |
806 | { | |
807 | unsigned code; | |
808 | ||
809 | if (INTEGERP (val)) | |
810 | code = XINT (val); | |
811 | else | |
812 | { | |
813 | CHECK_CONS (val); | |
814 | CHECK_NUMBER (XCAR (val)); | |
815 | CHECK_NUMBER (XCDR (val)); | |
816 | code = (XINT (XCAR (val)) << 16) | (XINT (XCDR (val))); | |
817 | } | |
818 | if (code < charset.min_code | |
819 | || code > charset.max_code) | |
820 | args_out_of_range_3 (make_number (charset.min_code), | |
821 | make_number (charset.max_code), val); | |
822 | charset.max_code = code; | |
823 | } | |
3263d5a2 | 824 | |
e9ce014c KH |
825 | charset.compact_codes_p = charset.max_code < 0x1000000; |
826 | ||
3263d5a2 KH |
827 | val = args[charset_arg_invalid_code]; |
828 | if (NILP (val)) | |
829 | { | |
830 | if (charset.min_code > 0) | |
831 | charset.invalid_code = 0; | |
bbf12bb3 KH |
832 | else |
833 | { | |
3263d5a2 KH |
834 | XSETINT (val, charset.max_code + 1); |
835 | if (XINT (val) == charset.max_code + 1) | |
836 | charset.invalid_code = charset.max_code + 1; | |
837 | else | |
838 | error ("Attribute :invalid-code must be specified"); | |
76d7b829 | 839 | } |
76d7b829 | 840 | } |
3263d5a2 KH |
841 | else |
842 | { | |
843 | CHECK_NATNUM (val); | |
844 | charset.invalid_code = XFASTINT (val); | |
845 | } | |
76d7b829 | 846 | |
3263d5a2 KH |
847 | val = args[charset_arg_iso_final]; |
848 | if (NILP (val)) | |
849 | charset.iso_final = -1; | |
850 | else | |
851 | { | |
852 | CHECK_NUMBER (val); | |
853 | if (XINT (val) < '0' || XINT (val) > 127) | |
854 | error ("Invalid iso-final-char: %d", XINT (val)); | |
855 | charset.iso_final = XINT (val); | |
856 | } | |
857 | ||
858 | val = args[charset_arg_iso_revision]; | |
859 | if (NILP (val)) | |
860 | charset.iso_revision = -1; | |
861 | else | |
4ed46869 | 862 | { |
3263d5a2 KH |
863 | CHECK_NUMBER (val); |
864 | if (XINT (val) > 63) | |
865 | args_out_of_range (make_number (63), val); | |
866 | charset.iso_revision = XINT (val); | |
4ed46869 | 867 | } |
3263d5a2 KH |
868 | |
869 | val = args[charset_arg_emacs_mule_id]; | |
870 | if (NILP (val)) | |
871 | charset.emacs_mule_id = -1; | |
4ed46869 KH |
872 | else |
873 | { | |
3263d5a2 KH |
874 | CHECK_NATNUM (val); |
875 | if ((XINT (val) > 0 && XINT (val) <= 128) || XINT (val) >= 256) | |
876 | error ("Invalid emacs-mule-id: %d", XINT (val)); | |
877 | charset.emacs_mule_id = XINT (val); | |
c83ef371 | 878 | } |
6ef23ebb | 879 | |
3263d5a2 | 880 | charset.ascii_compatible_p = ! NILP (args[charset_arg_ascii_compatible_p]); |
4ed46869 | 881 | |
3263d5a2 KH |
882 | charset.supplementary_p = ! NILP (args[charset_arg_supplementary_p]); |
883 | ||
884 | charset.unified_p = 0; | |
885 | ||
886 | bzero (charset.fast_map, sizeof (charset.fast_map)); | |
887 | ||
888 | if (! NILP (args[charset_arg_code_offset])) | |
889 | { | |
890 | val = args[charset_arg_code_offset]; | |
891 | CHECK_NUMBER (val); | |
892 | ||
893 | charset.method = CHARSET_METHOD_OFFSET; | |
894 | charset.code_offset = XINT (val); | |
895 | ||
896 | i = CODE_POINT_TO_INDEX (&charset, charset.min_code); | |
897 | charset.min_char = i + charset.code_offset; | |
898 | i = CODE_POINT_TO_INDEX (&charset, charset.max_code); | |
899 | charset.max_char = i + charset.code_offset; | |
900 | if (charset.max_char > MAX_CHAR) | |
901 | error ("Unsupported max char: %d", charset.max_char); | |
902 | ||
f148205f KH |
903 | i = (charset.min_char >> 7) << 7; |
904 | for (; i < 0x10000 && i <= charset.max_char; i += 128) | |
3263d5a2 | 905 | CHARSET_FAST_MAP_SET (i, charset.fast_map); |
f148205f | 906 | i = (i >> 12) << 12; |
3263d5a2 KH |
907 | for (; i <= charset.max_char; i += 0x1000) |
908 | CHARSET_FAST_MAP_SET (i, charset.fast_map); | |
909 | } | |
910 | else if (! NILP (args[charset_arg_map])) | |
911 | { | |
912 | val = args[charset_arg_map]; | |
913 | ASET (attrs, charset_map, val); | |
914 | if (STRINGP (val)) | |
e9ce014c KH |
915 | load_charset_map_from_file (&charset, val, 0); |
916 | else | |
917 | load_charset_map_from_vector (&charset, val, 0); | |
3263d5a2 KH |
918 | charset.method = CHARSET_METHOD_MAP_DEFERRED; |
919 | } | |
374c5cfd | 920 | else if (! NILP (args[charset_arg_subset])) |
3263d5a2 | 921 | { |
374c5cfd KH |
922 | Lisp_Object parent; |
923 | Lisp_Object parent_min_code, parent_max_code, parent_code_offset; | |
924 | struct charset *parent_charset; | |
925 | ||
926 | val = args[charset_arg_subset]; | |
927 | parent = Fcar (val); | |
928 | CHECK_CHARSET_GET_CHARSET (parent, parent_charset); | |
929 | parent_min_code = Fnth (make_number (1), val); | |
930 | CHECK_NATNUM (parent_min_code); | |
931 | parent_max_code = Fnth (make_number (2), val); | |
932 | CHECK_NATNUM (parent_max_code); | |
933 | parent_code_offset = Fnth (make_number (3), val); | |
934 | CHECK_NUMBER (parent_code_offset); | |
935 | val = Fmake_vector (make_number (4), Qnil); | |
936 | ASET (val, 0, make_number (parent_charset->id)); | |
937 | ASET (val, 1, parent_min_code); | |
938 | ASET (val, 2, parent_max_code); | |
939 | ASET (val, 3, parent_code_offset); | |
940 | ASET (attrs, charset_subset, val); | |
941 | ||
942 | charset.method = CHARSET_METHOD_SUBSET; | |
943 | /* Here, we just copy the parent's fast_map. It's not accurate, | |
944 | but at least it works for quickly detecting which character | |
945 | DOESN'T belong to this charset. */ | |
946 | for (i = 0; i < 190; i++) | |
947 | charset.fast_map[i] = parent_charset->fast_map[i]; | |
948 | ||
949 | /* We also copy these for parents. */ | |
950 | charset.min_char = parent_charset->min_char; | |
951 | charset.max_char = parent_charset->max_char; | |
952 | } | |
953 | else if (! NILP (args[charset_arg_superset])) | |
954 | { | |
955 | val = args[charset_arg_superset]; | |
956 | charset.method = CHARSET_METHOD_SUPERSET; | |
3263d5a2 | 957 | val = Fcopy_sequence (val); |
374c5cfd | 958 | ASET (attrs, charset_superset, val); |
3263d5a2 KH |
959 | |
960 | charset.min_char = MAX_CHAR; | |
961 | charset.max_char = 0; | |
962 | for (; ! NILP (val); val = Fcdr (val)) | |
4ed46869 | 963 | { |
3263d5a2 KH |
964 | Lisp_Object elt, car_part, cdr_part; |
965 | int this_id, offset; | |
966 | struct charset *this_charset; | |
967 | ||
968 | elt = Fcar (val); | |
969 | if (CONSP (elt)) | |
970 | { | |
971 | car_part = XCAR (elt); | |
972 | cdr_part = XCDR (elt); | |
973 | CHECK_CHARSET_GET_ID (car_part, this_id); | |
974 | CHECK_NUMBER (cdr_part); | |
975 | offset = XINT (cdr_part); | |
976 | } | |
977 | else | |
4ed46869 | 978 | { |
3263d5a2 KH |
979 | CHECK_CHARSET_GET_ID (elt, this_id); |
980 | offset = 0; | |
4ed46869 | 981 | } |
3263d5a2 KH |
982 | XSETCAR (val, Fcons (make_number (this_id), make_number (offset))); |
983 | ||
984 | this_charset = CHARSET_FROM_ID (this_id); | |
985 | if (charset.min_char > this_charset->min_char) | |
986 | charset.min_char = this_charset->min_char; | |
987 | if (charset.max_char < this_charset->max_char) | |
988 | charset.max_char = this_charset->max_char; | |
989 | for (i = 0; i < 190; i++) | |
990 | charset.fast_map[i] |= this_charset->fast_map[i]; | |
4ed46869 | 991 | } |
4ed46869 | 992 | } |
3263d5a2 KH |
993 | else |
994 | error ("None of :code-offset, :map, :parents are specified"); | |
4ed46869 | 995 | |
3263d5a2 KH |
996 | val = args[charset_arg_unify_map]; |
997 | if (! NILP (val) && !STRINGP (val)) | |
998 | CHECK_VECTOR (val); | |
999 | ASET (attrs, charset_unify_map, val); | |
4ed46869 | 1000 | |
3263d5a2 KH |
1001 | CHECK_LIST (args[charset_arg_plist]); |
1002 | ASET (attrs, charset_plist, args[charset_arg_plist]); | |
4ed46869 | 1003 | |
3263d5a2 KH |
1004 | charset.hash_index = hash_lookup (hash_table, args[charset_arg_name], |
1005 | &hash_code); | |
1006 | if (charset.hash_index >= 0) | |
1007 | { | |
1008 | new_definition_p = 0; | |
4f65af01 | 1009 | id = XFASTINT (CHARSET_SYMBOL_ID (args[charset_arg_name])); |
3263d5a2 KH |
1010 | HASH_VALUE (hash_table, charset.hash_index) = attrs; |
1011 | } | |
1a45ff10 | 1012 | else |
3263d5a2 KH |
1013 | { |
1014 | charset.hash_index = hash_put (hash_table, args[charset_arg_name], attrs, | |
1015 | hash_code); | |
1016 | if (charset_table_used == charset_table_size) | |
1017 | { | |
2fe1edd1 KH |
1018 | struct charset *new_table |
1019 | = (struct charset *) xmalloc (sizeof (struct charset) | |
1020 | * (charset_table_size + 16)); | |
1021 | bcopy (charset_table, new_table, | |
1022 | sizeof (struct charset) * charset_table_size); | |
1023 | charset_table_size += 16; | |
1024 | charset_table = new_table; | |
3263d5a2 KH |
1025 | } |
1026 | id = charset_table_used++; | |
3263d5a2 KH |
1027 | new_definition_p = 1; |
1028 | } | |
4ed46869 | 1029 | |
4f65af01 | 1030 | ASET (attrs, charset_id, make_number (id)); |
3263d5a2 KH |
1031 | charset.id = id; |
1032 | charset_table[id] = charset; | |
1033 | ||
1034 | if (charset.iso_final >= 0) | |
4ed46869 | 1035 | { |
3263d5a2 KH |
1036 | ISO_CHARSET_TABLE (charset.dimension, charset.iso_chars_96, |
1037 | charset.iso_final) = id; | |
1038 | if (new_definition_p) | |
1039 | Viso_2022_charset_list = nconc2 (Viso_2022_charset_list, | |
1040 | Fcons (make_number (id), Qnil)); | |
7c7dceee KH |
1041 | if (ISO_CHARSET_TABLE (1, 0, 'J') == id) |
1042 | charset_jisx0201_roman = id; | |
1043 | else if (ISO_CHARSET_TABLE (2, 0, '@') == id) | |
1044 | charset_jisx0208_1978 = id; | |
1045 | else if (ISO_CHARSET_TABLE (2, 0, 'B') == id) | |
1046 | charset_jisx0208 = id; | |
4ed46869 | 1047 | } |
3263d5a2 KH |
1048 | |
1049 | if (charset.emacs_mule_id >= 0) | |
4ed46869 | 1050 | { |
3263d5a2 | 1051 | emacs_mule_charset[charset.emacs_mule_id] = CHARSET_FROM_ID (id); |
4f65af01 KH |
1052 | if (charset.emacs_mule_id < 0xA0) |
1053 | emacs_mule_bytes[charset.emacs_mule_id] = charset.dimension + 1; | |
3263d5a2 KH |
1054 | if (new_definition_p) |
1055 | Vemacs_mule_charset_list = nconc2 (Vemacs_mule_charset_list, | |
1056 | Fcons (make_number (id), Qnil)); | |
4ed46869 KH |
1057 | } |
1058 | ||
3263d5a2 KH |
1059 | if (new_definition_p) |
1060 | { | |
1061 | Vcharset_list = Fcons (args[charset_arg_name], Vcharset_list); | |
1062 | Vcharset_ordered_list = nconc2 (Vcharset_ordered_list, | |
1063 | Fcons (make_number (id), Qnil)); | |
dbbb237d | 1064 | charset_ordered_list_tick++; |
3263d5a2 | 1065 | } |
4ed46869 | 1066 | |
3263d5a2 | 1067 | return Qnil; |
4ed46869 KH |
1068 | } |
1069 | ||
2fe1edd1 KH |
1070 | |
1071 | /* Same as Fdefine_charset_internal but arguments are more convenient | |
1072 | to call from C (typically in syms_of_charset). This can define a | |
1073 | charset of `offset' method only. Return the ID of the new | |
1074 | charset. */ | |
1075 | ||
1076 | static int | |
1077 | define_charset_internal (name, dimension, code_space, min_code, max_code, | |
1078 | iso_final, iso_revision, emacs_mule_id, | |
7acf89e6 | 1079 | ascii_compatible, supplementary, |
2fe1edd1 KH |
1080 | code_offset) |
1081 | Lisp_Object name; | |
1082 | int dimension; | |
1083 | unsigned char *code_space; | |
1084 | unsigned min_code, max_code; | |
1085 | int iso_final, iso_revision, emacs_mule_id; | |
7acf89e6 | 1086 | int ascii_compatible, supplementary; |
2fe1edd1 KH |
1087 | int code_offset; |
1088 | { | |
1089 | Lisp_Object args[charset_arg_max]; | |
1090 | Lisp_Object plist[14]; | |
1091 | Lisp_Object val; | |
1092 | int i; | |
1093 | ||
1094 | args[charset_arg_name] = name; | |
1095 | args[charset_arg_dimension] = make_number (dimension); | |
1096 | val = Fmake_vector (make_number (8), make_number (0)); | |
1097 | for (i = 0; i < 8; i++) | |
1098 | ASET (val, i, make_number (code_space[i])); | |
1099 | args[charset_arg_code_space] = val; | |
1100 | args[charset_arg_min_code] = make_number (min_code); | |
1101 | args[charset_arg_max_code] = make_number (max_code); | |
1102 | args[charset_arg_iso_final] | |
1103 | = (iso_final < 0 ? Qnil : make_number (iso_final)); | |
1104 | args[charset_arg_iso_revision] = make_number (iso_revision); | |
1105 | args[charset_arg_emacs_mule_id] | |
1106 | = (emacs_mule_id < 0 ? Qnil : make_number (emacs_mule_id)); | |
1107 | args[charset_arg_ascii_compatible_p] = ascii_compatible ? Qt : Qnil; | |
7acf89e6 | 1108 | args[charset_arg_supplementary_p] = supplementary ? Qt : Qnil; |
2fe1edd1 KH |
1109 | args[charset_arg_invalid_code] = Qnil; |
1110 | args[charset_arg_code_offset] = make_number (code_offset); | |
1111 | args[charset_arg_map] = Qnil; | |
1112 | args[charset_arg_subset] = Qnil; | |
1113 | args[charset_arg_superset] = Qnil; | |
1114 | args[charset_arg_unify_map] = Qnil; | |
1115 | ||
1116 | plist[0] = intern (":name"); | |
1117 | plist[1] = args[charset_arg_name]; | |
1118 | plist[2] = intern (":dimension"); | |
1119 | plist[3] = args[charset_arg_dimension]; | |
1120 | plist[4] = intern (":code-space"); | |
1121 | plist[5] = args[charset_arg_code_space]; | |
1122 | plist[6] = intern (":iso-final-char"); | |
1123 | plist[7] = args[charset_arg_iso_final]; | |
1124 | plist[8] = intern (":emacs-mule-id"); | |
1125 | plist[9] = args[charset_arg_emacs_mule_id]; | |
1126 | plist[10] = intern (":ascii-compatible-p"); | |
1127 | plist[11] = args[charset_arg_ascii_compatible_p]; | |
1128 | plist[12] = intern (":code-offset"); | |
1129 | plist[13] = args[charset_arg_code_offset]; | |
1130 | ||
1131 | args[charset_arg_plist] = Flist (14, plist); | |
1132 | Fdefine_charset_internal (charset_arg_max, args); | |
1133 | ||
1134 | return XINT (CHARSET_SYMBOL_ID (name)); | |
1135 | } | |
1136 | ||
1137 | ||
3263d5a2 KH |
1138 | DEFUN ("define-charset-alias", Fdefine_charset_alias, |
1139 | Sdefine_charset_alias, 2, 2, 0, | |
1140 | doc: /* Define ALIAS as an alias for charset CHARSET. */) | |
1141 | (alias, charset) | |
1142 | Lisp_Object alias, charset; | |
4ed46869 | 1143 | { |
3263d5a2 KH |
1144 | Lisp_Object attr; |
1145 | ||
1146 | CHECK_CHARSET_GET_ATTR (charset, attr); | |
1147 | Fputhash (alias, attr, Vcharset_hash_table); | |
528623a0 | 1148 | Vcharset_list = Fcons (alias, Vcharset_list); |
3263d5a2 KH |
1149 | return Qnil; |
1150 | } | |
4ed46869 | 1151 | |
4ed46869 | 1152 | |
d1a04588 KH |
1153 | DEFUN ("unibyte-charset", Funibyte_charset, Sunibyte_charset, 0, 0, 0, |
1154 | doc: /* Return the unibyte charset (set by `set-unibyte-charset'). */) | |
3263d5a2 KH |
1155 | () |
1156 | { | |
d1a04588 | 1157 | return CHARSET_NAME (CHARSET_FROM_ID (charset_unibyte)); |
3263d5a2 | 1158 | } |
4ed46869 | 1159 | |
4ed46869 | 1160 | |
d1a04588 | 1161 | DEFUN ("set-unibyte-charset", Fset_unibyte_charset, Sset_unibyte_charset, |
3263d5a2 | 1162 | 1, 1, 0, |
d1a04588 | 1163 | doc: /* Set the unibyte charset to CHARSET. |
56a46d1d | 1164 | This determines how unibyte/multibyte conversion is done. See also |
d1a04588 | 1165 | function `unibyte-charset'. */) |
3263d5a2 KH |
1166 | (charset) |
1167 | Lisp_Object charset; | |
1168 | { | |
14e3d523 KH |
1169 | struct charset *cs; |
1170 | int i, c; | |
1171 | ||
1172 | CHECK_CHARSET_GET_CHARSET (charset, cs); | |
1173 | if (! cs->ascii_compatible_p | |
1174 | || cs->dimension != 1) | |
1175 | error ("Inappropriate unibyte charset: %s", XSYMBOL (charset)->name->data); | |
1176 | charset_unibyte = cs->id; | |
1177 | for (i = 128; i < 256; i++) | |
1178 | { | |
1179 | c = DECODE_CHAR (cs, i); | |
1180 | unibyte_to_multibyte_table[i] = (c < 0 ? i : c); | |
1181 | } | |
3263d5a2 | 1182 | |
4ed46869 KH |
1183 | return Qnil; |
1184 | } | |
1185 | ||
3263d5a2 KH |
1186 | |
1187 | DEFUN ("charset-plist", Fcharset_plist, Scharset_plist, 1, 1, 0, | |
56a46d1d | 1188 | doc: /* Return the property list of CHARSET. */) |
3263d5a2 KH |
1189 | (charset) |
1190 | Lisp_Object charset; | |
1191 | { | |
1192 | Lisp_Object attrs; | |
1193 | ||
1194 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
1195 | return CHARSET_ATTR_PLIST (attrs); | |
1196 | } | |
1197 | ||
1198 | ||
1199 | DEFUN ("set-charset-plist", Fset_charset_plist, Sset_charset_plist, 2, 2, 0, | |
1200 | doc: /* Set CHARSET's property list to PLIST. */) | |
1201 | (charset, plist) | |
1202 | Lisp_Object charset, plist; | |
1203 | { | |
1204 | Lisp_Object attrs; | |
1205 | ||
1206 | CHECK_CHARSET_GET_ATTR (charset, attrs); | |
1207 | CHARSET_ATTR_PLIST (attrs) = plist; | |
1208 | return plist; | |
1209 | } | |
1210 | ||
1211 | ||
dbbb237d | 1212 | DEFUN ("unify-charset", Funify_charset, Sunify_charset, 1, 3, 0, |
56a46d1d DL |
1213 | doc: /* Unify characters of CHARSET with Unicode. |
1214 | This means reading the relevant file and installing the table defined | |
dbbb237d KH |
1215 | by CHARSET's `:unify-map' property. |
1216 | ||
64165ae2 DL |
1217 | Optional second arg UNIFY-MAP is a file name string or a vector. It has |
1218 | the same meaning as the `:unify-map' attribute in the function | |
dbbb237d KH |
1219 | `define-charset' (which see). |
1220 | ||
1221 | Optional third argument DEUNIFY, if non-nil, means to de-unify CHARSET. */) | |
1222 | (charset, unify_map, deunify) | |
1223 | Lisp_Object charset, unify_map, deunify; | |
8a73a704 | 1224 | { |
3263d5a2 KH |
1225 | int id; |
1226 | struct charset *cs; | |
1227 | ||
1228 | CHECK_CHARSET_GET_ID (charset, id); | |
1229 | cs = CHARSET_FROM_ID (id); | |
1230 | if (CHARSET_METHOD (cs) == CHARSET_METHOD_MAP_DEFERRED) | |
1231 | load_charset (cs); | |
dbbb237d KH |
1232 | if (NILP (deunify) |
1233 | ? CHARSET_UNIFIED_P (cs) && ! NILP (CHARSET_DEUNIFIER (cs)) | |
1234 | : ! CHARSET_UNIFIED_P (cs)) | |
3263d5a2 | 1235 | return Qnil; |
dbbb237d | 1236 | |
3263d5a2 | 1237 | CHARSET_UNIFIED_P (cs) = 0; |
dbbb237d KH |
1238 | if (NILP (deunify)) |
1239 | { | |
1240 | if (CHARSET_METHOD (cs) != CHARSET_METHOD_OFFSET) | |
1241 | error ("Can't unify charset: %s", XSYMBOL (charset)->name->data); | |
1242 | if (NILP (unify_map)) | |
1243 | unify_map = CHARSET_UNIFY_MAP (cs); | |
1244 | if (STRINGP (unify_map)) | |
1245 | load_charset_map_from_file (cs, unify_map, 2); | |
1246 | else if (VECTORP (unify_map)) | |
1247 | load_charset_map_from_vector (cs, unify_map, 2); | |
1248 | else if (NILP (unify_map)) | |
1249 | error ("No unify-map for charset"); | |
1250 | else | |
1251 | error ("Bad unify-map arg"); | |
1252 | CHARSET_UNIFIED_P (cs) = 1; | |
1253 | } | |
1254 | else if (CHAR_TABLE_P (Vchar_unify_table)) | |
1255 | { | |
1256 | int min_code = CHARSET_MIN_CODE (cs); | |
1257 | int max_code = CHARSET_MAX_CODE (cs); | |
1258 | int min_char = DECODE_CHAR (cs, min_code); | |
1259 | int max_char = DECODE_CHAR (cs, max_code); | |
1260 | ||
1261 | char_table_set_range (Vchar_unify_table, min_char, max_char, Qnil); | |
1262 | } | |
1263 | ||
3263d5a2 | 1264 | return Qnil; |
8a73a704 KH |
1265 | } |
1266 | ||
3fac5a51 KH |
1267 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
1268 | Sget_unused_iso_final_char, 2, 2, 0, | |
3263d5a2 | 1269 | doc: /* |
1721b6af | 1270 | Return an unsed ISO final char for a charset of DIMENISION and CHARS. |
fdb82f93 PJ |
1271 | DIMENSION is the number of bytes to represent a character: 1 or 2. |
1272 | CHARS is the number of characters in a dimension: 94 or 96. | |
1273 | ||
1274 | This final char is for private use, thus the range is `0' (48) .. `?' (63). | |
1721b6af | 1275 | If there's no unused final char for the specified kind of charset, |
fdb82f93 PJ |
1276 | return nil. */) |
1277 | (dimension, chars) | |
3fac5a51 KH |
1278 | Lisp_Object dimension, chars; |
1279 | { | |
1280 | int final_char; | |
1281 | ||
b7826503 PJ |
1282 | CHECK_NUMBER (dimension); |
1283 | CHECK_NUMBER (chars); | |
3263d5a2 KH |
1284 | if (XINT (dimension) != 1 && XINT (dimension) != 2 && XINT (dimension) != 3) |
1285 | args_out_of_range_3 (dimension, make_number (1), make_number (3)); | |
3fac5a51 | 1286 | if (XINT (chars) != 94 && XINT (chars) != 96) |
3263d5a2 | 1287 | args_out_of_range_3 (chars, make_number (94), make_number (96)); |
3fac5a51 | 1288 | for (final_char = '0'; final_char <= '?'; final_char++) |
3263d5a2 KH |
1289 | if (ISO_CHARSET_TABLE (XINT (dimension), XINT (chars), final_char) < 0) |
1290 | break; | |
3fac5a51 KH |
1291 | return (final_char <= '?' ? make_number (final_char) : Qnil); |
1292 | } | |
1293 | ||
3263d5a2 KH |
1294 | static void |
1295 | check_iso_charset_parameter (dimension, chars, final_char) | |
1296 | Lisp_Object dimension, chars, final_char; | |
4ed46869 | 1297 | { |
3263d5a2 KH |
1298 | CHECK_NATNUM (dimension); |
1299 | CHECK_NATNUM (chars); | |
1300 | CHECK_NATNUM (final_char); | |
4ed46869 | 1301 | |
3263d5a2 KH |
1302 | if (XINT (dimension) > 3) |
1303 | error ("Invalid DIMENSION %d, it should be 1, 2, or 3", XINT (dimension)); | |
4ed46869 KH |
1304 | if (XINT (chars) != 94 && XINT (chars) != 96) |
1305 | error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars)); | |
3263d5a2 | 1306 | if (XINT (final_char) < '0' || XINT (final_char) > '~') |
4ed46869 | 1307 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars)); |
3263d5a2 KH |
1308 | } |
1309 | ||
1310 | ||
1311 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, | |
1312 | 4, 4, 0, | |
1313 | doc: /* | |
1314 | Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET. | |
56a46d1d | 1315 | CHARSET should be defined by `define-charset' in advance. */) |
3263d5a2 KH |
1316 | (dimension, chars, final_char, charset) |
1317 | Lisp_Object dimension, chars, final_char, charset; | |
1318 | { | |
1319 | int id; | |
4ed46869 | 1320 | |
3263d5a2 KH |
1321 | CHECK_CHARSET_GET_ID (charset, id); |
1322 | check_iso_charset_parameter (dimension, chars, final_char); | |
1323 | ||
16fed1fc | 1324 | ISO_CHARSET_TABLE (XINT (dimension), XINT (chars), XINT (final_char)) = id; |
4ed46869 KH |
1325 | return Qnil; |
1326 | } | |
1327 | ||
3263d5a2 | 1328 | |
2e344af3 KH |
1329 | /* Return information about charsets in the text at PTR of NBYTES |
1330 | bytes, which are NCHARS characters. The value is: | |
f6302ac9 | 1331 | |
cfe34140 | 1332 | 0: Each character is represented by one byte. This is always |
3263d5a2 KH |
1333 | true for a unibyte string. For a multibyte string, true if |
1334 | it contains only ASCII characters. | |
1335 | ||
28c026cd DL |
1336 | 1: No charsets other than ascii, control-1, and latin-1 are |
1337 | found. | |
1d67c29b | 1338 | |
3263d5a2 KH |
1339 | 2: Otherwise. |
1340 | */ | |
4ed46869 KH |
1341 | |
1342 | int | |
3263d5a2 KH |
1343 | string_xstring_p (string) |
1344 | Lisp_Object string; | |
4ed46869 | 1345 | { |
dbbb237d KH |
1346 | const unsigned char *p = XSTRING (string)->data; |
1347 | const unsigned char *endp = p + STRING_BYTES (XSTRING (string)); | |
3263d5a2 KH |
1348 | struct charset *charset; |
1349 | ||
1350 | if (XSTRING (string)->size == STRING_BYTES (XSTRING (string))) | |
1351 | return 0; | |
1352 | ||
1353 | charset = CHARSET_FROM_ID (charset_iso_8859_1); | |
1354 | while (p < endp) | |
0282eb69 | 1355 | { |
3263d5a2 | 1356 | int c = STRING_CHAR_ADVANCE (p); |
2e344af3 | 1357 | |
64165ae2 | 1358 | /* Fixme: comparison of unsigned expression < 0 is always false */ |
3263d5a2 KH |
1359 | if (ENCODE_CHAR (charset, c) < 0) |
1360 | return 2; | |
0282eb69 | 1361 | } |
3263d5a2 KH |
1362 | return 1; |
1363 | } | |
05505664 | 1364 | |
05505664 | 1365 | |
3263d5a2 | 1366 | /* Find charsets in the string at PTR of NCHARS and NBYTES. |
4ed46869 | 1367 | |
3263d5a2 KH |
1368 | CHARSETS is a vector. Each element is a cons of CHARSET and |
1369 | FOUND-FLAG. CHARSET is a charset id, and FOUND-FLAG is nil or t. | |
1370 | FOUND-FLAG t (or nil) means that the corresponding charset is | |
1371 | already found (or not yet found). | |
2e344af3 | 1372 | |
3263d5a2 | 1373 | It may lookup a translation table TABLE if supplied. */ |
2e344af3 | 1374 | |
3263d5a2 KH |
1375 | static void |
1376 | find_charsets_in_text (ptr, nchars, nbytes, charsets, table) | |
dbbb237d | 1377 | const unsigned char *ptr; |
3263d5a2 KH |
1378 | int nchars, nbytes; |
1379 | Lisp_Object charsets, table; | |
1380 | { | |
dbbb237d | 1381 | const unsigned char *pend = ptr + nbytes; |
3263d5a2 KH |
1382 | int ncharsets = ASIZE (charsets); |
1383 | ||
1384 | if (nchars == nbytes) | |
1385 | return; | |
1386 | ||
1387 | while (ptr < pend) | |
1388 | { | |
1389 | int c = STRING_CHAR_ADVANCE (ptr); | |
1390 | int i; | |
1391 | int all_found = 1; | |
1392 | Lisp_Object elt; | |
1393 | ||
1394 | if (!NILP (table)) | |
1395 | c = translate_char (table, c); | |
1396 | for (i = 0; i < ncharsets; i++) | |
1397 | { | |
1398 | elt = AREF (charsets, i); | |
1399 | if (NILP (XCDR (elt))) | |
1400 | { | |
1401 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (elt))); | |
1402 | ||
1403 | if (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset)) | |
1404 | XCDR (elt) = Qt; | |
1405 | else | |
1406 | all_found = 0; | |
1407 | } | |
4ed46869 | 1408 | } |
3263d5a2 KH |
1409 | if (all_found) |
1410 | break; | |
4ed46869 | 1411 | } |
4ed46869 KH |
1412 | } |
1413 | ||
28c026cd | 1414 | /* Fixme: returns nil for unibyte. */ |
4ed46869 | 1415 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, |
23d2a7f1 | 1416 | 2, 3, 0, |
fdb82f93 PJ |
1417 | doc: /* Return a list of charsets in the region between BEG and END. |
1418 | BEG and END are buffer positions. | |
1419 | Optional arg TABLE if non-nil is a translation table to look up. | |
1420 | ||
fdb82f93 PJ |
1421 | If the current buffer is unibyte, the returned list may contain |
1422 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) | |
1423 | (beg, end, table) | |
23d2a7f1 | 1424 | Lisp_Object beg, end, table; |
4ed46869 | 1425 | { |
3263d5a2 | 1426 | Lisp_Object charsets; |
6ae1f27e | 1427 | int from, from_byte, to, stop, stop_byte, i; |
4ed46869 KH |
1428 | Lisp_Object val; |
1429 | ||
1430 | validate_region (&beg, &end); | |
1431 | from = XFASTINT (beg); | |
1432 | stop = to = XFASTINT (end); | |
6ae1f27e | 1433 | |
4ed46869 | 1434 | if (from < GPT && GPT < to) |
6ae1f27e RS |
1435 | { |
1436 | stop = GPT; | |
1437 | stop_byte = GPT_BYTE; | |
1438 | } | |
1439 | else | |
1440 | stop_byte = CHAR_TO_BYTE (stop); | |
1441 | ||
1442 | from_byte = CHAR_TO_BYTE (from); | |
1443 | ||
3263d5a2 KH |
1444 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
1445 | for (i = 0; i < charset_table_used; i++) | |
1446 | ASET (charsets, i, Fcons (make_number (i), Qnil)); | |
1447 | ||
4ed46869 KH |
1448 | while (1) |
1449 | { | |
3263d5a2 KH |
1450 | find_charsets_in_text (BYTE_POS_ADDR (from_byte), stop - from, |
1451 | stop_byte - from_byte, charsets, table); | |
4ed46869 | 1452 | if (stop < to) |
6ae1f27e RS |
1453 | { |
1454 | from = stop, from_byte = stop_byte; | |
1455 | stop = to, stop_byte = CHAR_TO_BYTE (stop); | |
1456 | } | |
4ed46869 KH |
1457 | else |
1458 | break; | |
1459 | } | |
6ae1f27e | 1460 | |
4ed46869 | 1461 | val = Qnil; |
3263d5a2 KH |
1462 | for (i = charset_table_used - 1; i >= 0; i--) |
1463 | if (!NILP (XCDR (AREF (charsets, i)))) | |
1464 | val = Fcons (CHARSET_NAME (charset_table + i), val); | |
4ed46869 KH |
1465 | return val; |
1466 | } | |
1467 | ||
28c026cd | 1468 | /* Fixme: returns nil for unibyte. */ |
4ed46869 | 1469 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, |
23d2a7f1 | 1470 | 1, 2, 0, |
fdb82f93 PJ |
1471 | doc: /* Return a list of charsets in STR. |
1472 | Optional arg TABLE if non-nil is a translation table to look up. | |
1473 | ||
fdb82f93 | 1474 | If STR is unibyte, the returned list may contain |
3263d5a2 | 1475 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) |
fdb82f93 | 1476 | (str, table) |
23d2a7f1 | 1477 | Lisp_Object str, table; |
4ed46869 | 1478 | { |
3263d5a2 | 1479 | Lisp_Object charsets; |
4ed46869 KH |
1480 | int i; |
1481 | Lisp_Object val; | |
1482 | ||
b7826503 | 1483 | CHECK_STRING (str); |
87b089ad | 1484 | |
3263d5a2 | 1485 | charsets = Fmake_vector (make_number (charset_table_used), Qnil); |
dcd50550 KH |
1486 | for (i = 0; i < charset_table_used; i++) |
1487 | ASET (charsets, i, Fcons (make_number (i), Qnil)); | |
3263d5a2 KH |
1488 | find_charsets_in_text (XSTRING (str)->data, XSTRING (str)->size, |
1489 | STRING_BYTES (XSTRING (str)), charsets, table); | |
2e344af3 | 1490 | |
4ed46869 | 1491 | val = Qnil; |
3263d5a2 KH |
1492 | for (i = charset_table_used - 1; i >= 0; i--) |
1493 | if (!NILP (XCDR (AREF (charsets, i)))) | |
1494 | val = Fcons (CHARSET_NAME (charset_table + i), val); | |
4ed46869 KH |
1495 | return val; |
1496 | } | |
2e344af3 | 1497 | |
4ed46869 | 1498 | \f |
3263d5a2 KH |
1499 | |
1500 | /* Return a character correponding to the code-point CODE of | |
1501 | CHARSET. */ | |
1502 | ||
1503 | int | |
1504 | decode_char (charset, code) | |
1505 | struct charset *charset; | |
1506 | unsigned code; | |
4ed46869 | 1507 | { |
3263d5a2 KH |
1508 | int c, char_index; |
1509 | enum charset_method method = CHARSET_METHOD (charset); | |
ac4137cc | 1510 | |
3263d5a2 KH |
1511 | if (code < CHARSET_MIN_CODE (charset) || code > CHARSET_MAX_CODE (charset)) |
1512 | return -1; | |
4ed46869 | 1513 | |
3263d5a2 | 1514 | if (method == CHARSET_METHOD_MAP_DEFERRED) |
ac4137cc | 1515 | { |
3263d5a2 KH |
1516 | load_charset (charset); |
1517 | method = CHARSET_METHOD (charset); | |
ac4137cc | 1518 | } |
4ed46869 | 1519 | |
374c5cfd KH |
1520 | if (method == CHARSET_METHOD_SUBSET) |
1521 | { | |
1522 | Lisp_Object subset_info; | |
1523 | ||
1524 | subset_info = CHARSET_SUBSET (charset); | |
1525 | charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
1526 | code -= XINT (AREF (subset_info, 3)); | |
1527 | if (code < XFASTINT (AREF (subset_info, 1)) | |
1528 | || code > XFASTINT (AREF (subset_info, 2))) | |
1529 | c = -1; | |
1530 | else | |
1531 | c = DECODE_CHAR (charset, code); | |
1532 | } | |
1533 | else if (method == CHARSET_METHOD_SUPERSET) | |
2e344af3 | 1534 | { |
3263d5a2 | 1535 | Lisp_Object parents; |
4ed46869 | 1536 | |
374c5cfd | 1537 | parents = CHARSET_SUPERSET (charset); |
3263d5a2 KH |
1538 | c = -1; |
1539 | for (; CONSP (parents); parents = XCDR (parents)) | |
1540 | { | |
1541 | int id = XINT (XCAR (XCAR (parents))); | |
1542 | int code_offset = XINT (XCDR (XCAR (parents))); | |
374c5cfd | 1543 | unsigned this_code = code - code_offset; |
9d3d8cba | 1544 | |
3263d5a2 KH |
1545 | charset = CHARSET_FROM_ID (id); |
1546 | if ((c = DECODE_CHAR (charset, this_code)) >= 0) | |
1547 | break; | |
1548 | } | |
1549 | } | |
1550 | else | |
ac4137cc | 1551 | { |
3263d5a2 | 1552 | char_index = CODE_POINT_TO_INDEX (charset, code); |
69f8de5b KH |
1553 | if (char_index < 0) |
1554 | return -1; | |
3263d5a2 KH |
1555 | |
1556 | if (method == CHARSET_METHOD_MAP) | |
ac4137cc | 1557 | { |
3263d5a2 KH |
1558 | Lisp_Object decoder; |
1559 | ||
1560 | decoder = CHARSET_DECODER (charset); | |
1561 | if (! VECTORP (decoder)) | |
1562 | return -1; | |
1563 | c = XINT (AREF (decoder, char_index)); | |
ac4137cc KH |
1564 | } |
1565 | else | |
1566 | { | |
3263d5a2 | 1567 | c = char_index + CHARSET_CODE_OFFSET (charset); |
ac4137cc KH |
1568 | } |
1569 | } | |
9d3d8cba | 1570 | |
3263d5a2 KH |
1571 | if (CHARSET_UNIFIED_P (charset) |
1572 | && c >= 0) | |
c449997d KH |
1573 | { |
1574 | MAYBE_UNIFY_CHAR (c); | |
1575 | } | |
d2665018 | 1576 | |
3263d5a2 | 1577 | return c; |
d2665018 KH |
1578 | } |
1579 | ||
374c5cfd KH |
1580 | /* Variable used temporarily by the macro ENCODE_CHAR. */ |
1581 | Lisp_Object charset_work; | |
1bcc1567 | 1582 | |
3263d5a2 | 1583 | /* Return a code-point of CHAR in CHARSET. If CHAR doesn't belong to |
28c026cd DL |
1584 | CHARSET, return CHARSET_INVALID_CODE (CHARSET). If STRICT is true, |
1585 | use CHARSET's strict_max_char instead of max_char. */ | |
1bcc1567 | 1586 | |
3263d5a2 KH |
1587 | unsigned |
1588 | encode_char (charset, c) | |
1589 | struct charset *charset; | |
9b6a601f KH |
1590 | int c; |
1591 | { | |
3263d5a2 KH |
1592 | unsigned code; |
1593 | enum charset_method method = CHARSET_METHOD (charset); | |
8ac5a9cc | 1594 | |
3263d5a2 | 1595 | if (CHARSET_UNIFIED_P (charset)) |
4ed46869 | 1596 | { |
374c5cfd | 1597 | Lisp_Object deunifier, deunified; |
4ed46869 | 1598 | |
3263d5a2 KH |
1599 | deunifier = CHARSET_DEUNIFIER (charset); |
1600 | if (! CHAR_TABLE_P (deunifier)) | |
1601 | { | |
dbbb237d | 1602 | Funify_charset (CHARSET_NAME (charset), Qnil, Qnil); |
3263d5a2 KH |
1603 | deunifier = CHARSET_DEUNIFIER (charset); |
1604 | } | |
374c5cfd KH |
1605 | deunified = CHAR_TABLE_REF (deunifier, c); |
1606 | if (! NILP (deunified)) | |
1607 | c = XINT (deunified); | |
4ed46869 | 1608 | } |
beeedaad | 1609 | |
374c5cfd KH |
1610 | if (method == CHARSET_METHOD_SUBSET) |
1611 | { | |
1612 | Lisp_Object subset_info; | |
1613 | struct charset *this_charset; | |
1614 | ||
1615 | subset_info = CHARSET_SUBSET (charset); | |
1616 | this_charset = CHARSET_FROM_ID (XFASTINT (AREF (subset_info, 0))); | |
1617 | code = ENCODE_CHAR (this_charset, c); | |
1618 | if (code == CHARSET_INVALID_CODE (this_charset) | |
1619 | || code < XFASTINT (AREF (subset_info, 1)) | |
1620 | || code > XFASTINT (AREF (subset_info, 2))) | |
1621 | return CHARSET_INVALID_CODE (charset); | |
1622 | code += XINT (AREF (subset_info, 3)); | |
1623 | return code; | |
1624 | } | |
1625 | ||
1626 | if (method == CHARSET_METHOD_SUPERSET) | |
859f2b3c | 1627 | { |
3263d5a2 | 1628 | Lisp_Object parents; |
859f2b3c | 1629 | |
374c5cfd | 1630 | parents = CHARSET_SUPERSET (charset); |
3263d5a2 | 1631 | for (; CONSP (parents); parents = XCDR (parents)) |
beeedaad | 1632 | { |
3263d5a2 KH |
1633 | int id = XINT (XCAR (XCAR (parents))); |
1634 | int code_offset = XINT (XCDR (XCAR (parents))); | |
1635 | struct charset *this_charset = CHARSET_FROM_ID (id); | |
beeedaad | 1636 | |
3263d5a2 | 1637 | code = ENCODE_CHAR (this_charset, c); |
dbbb237d KH |
1638 | if (code != CHARSET_INVALID_CODE (this_charset)) |
1639 | return code + code_offset; | |
beeedaad | 1640 | } |
3263d5a2 KH |
1641 | return CHARSET_INVALID_CODE (charset); |
1642 | } | |
99529c2c | 1643 | |
15c85a88 KH |
1644 | if (! CHARSET_FAST_MAP_REF ((c), charset->fast_map) |
1645 | || c < CHARSET_MIN_CHAR (charset) || c > CHARSET_MAX_CHAR (charset)) | |
1646 | return CHARSET_INVALID_CODE (charset); | |
1647 | ||
3263d5a2 | 1648 | if (method == CHARSET_METHOD_MAP_DEFERRED) |
beeedaad | 1649 | { |
3263d5a2 KH |
1650 | load_charset (charset); |
1651 | method = CHARSET_METHOD (charset); | |
859f2b3c | 1652 | } |
beeedaad | 1653 | |
3263d5a2 | 1654 | if (method == CHARSET_METHOD_MAP) |
3f62427c | 1655 | { |
3263d5a2 | 1656 | Lisp_Object encoder; |
beeedaad | 1657 | Lisp_Object val; |
beeedaad | 1658 | |
3263d5a2 KH |
1659 | encoder = CHARSET_ENCODER (charset); |
1660 | if (! CHAR_TABLE_P (CHARSET_ENCODER (charset))) | |
1661 | return CHARSET_INVALID_CODE (charset); | |
1662 | val = CHAR_TABLE_REF (encoder, c); | |
374c5cfd KH |
1663 | if (NILP (val)) |
1664 | return CHARSET_INVALID_CODE (charset); | |
e9ce014c KH |
1665 | code = XINT (val); |
1666 | if (! CHARSET_COMPACT_CODES_P (charset)) | |
1667 | code = INDEX_TO_CODE_POINT (charset, code); | |
3263d5a2 | 1668 | } |
820ee249 | 1669 | else /* method == CHARSET_METHOD_OFFSET */ |
beeedaad | 1670 | { |
3263d5a2 KH |
1671 | code = c - CHARSET_CODE_OFFSET (charset); |
1672 | code = INDEX_TO_CODE_POINT (charset, code); | |
3f62427c | 1673 | } |
beeedaad | 1674 | |
3263d5a2 | 1675 | return code; |
3f62427c KH |
1676 | } |
1677 | ||
4ed46869 | 1678 | |
3263d5a2 KH |
1679 | DEFUN ("decode-char", Fdecode_char, Sdecode_char, 2, 3, 0, |
1680 | doc: /* Decode the pair of CHARSET and CODE-POINT into a character. | |
1681 | Return nil if CODE-POINT is not valid in CHARSET. | |
4ed46869 | 1682 | |
3263d5a2 KH |
1683 | CODE-POINT may be a cons (HIGHER-16-BIT-VALUE . LOWER-16-BIT-VALUE). |
1684 | ||
1685 | Optional argument RESTRICTION specifies a way to map the pair of CCS | |
1686 | and CODE-POINT to a chracter. Currently not supported and just ignored. */) | |
1687 | (charset, code_point, restriction) | |
1688 | Lisp_Object charset, code_point, restriction; | |
4ed46869 | 1689 | { |
3263d5a2 KH |
1690 | int c, id; |
1691 | unsigned code; | |
1692 | struct charset *charsetp; | |
4ed46869 | 1693 | |
3263d5a2 KH |
1694 | CHECK_CHARSET_GET_ID (charset, id); |
1695 | if (CONSP (code_point)) | |
1696 | { | |
1697 | CHECK_NATNUM (XCAR (code_point)); | |
1698 | CHECK_NATNUM (XCDR (code_point)); | |
69f8de5b | 1699 | code = (XINT (XCAR (code_point)) << 16) | (XINT (XCDR (code_point))); |
3263d5a2 KH |
1700 | } |
1701 | else | |
1702 | { | |
1703 | CHECK_NATNUM (code_point); | |
1704 | code = XINT (code_point); | |
1705 | } | |
1706 | charsetp = CHARSET_FROM_ID (id); | |
1707 | c = DECODE_CHAR (charsetp, code); | |
1708 | return (c >= 0 ? make_number (c) : Qnil); | |
4ed46869 KH |
1709 | } |
1710 | ||
046b1f03 | 1711 | |
3263d5a2 KH |
1712 | DEFUN ("encode-char", Fencode_char, Sencode_char, 2, 3, 0, |
1713 | doc: /* Encode the character CH into a code-point of CHARSET. | |
1714 | Return nil if CHARSET doesn't include CH. | |
17e7ef1b | 1715 | |
3263d5a2 KH |
1716 | Optional argument RESTRICTION specifies a way to map CHAR to a |
1717 | code-point in CCS. Currently not supported and just ignored. */) | |
1718 | (ch, charset, restriction) | |
1719 | Lisp_Object ch, charset, restriction; | |
1720 | { | |
16fed1fc | 1721 | int id; |
3263d5a2 KH |
1722 | unsigned code; |
1723 | struct charset *charsetp; | |
046b1f03 | 1724 | |
3263d5a2 KH |
1725 | CHECK_CHARSET_GET_ID (charset, id); |
1726 | CHECK_NATNUM (ch); | |
3263d5a2 | 1727 | charsetp = CHARSET_FROM_ID (id); |
16fed1fc | 1728 | code = ENCODE_CHAR (charsetp, XINT (ch)); |
3263d5a2 KH |
1729 | if (code == CHARSET_INVALID_CODE (charsetp)) |
1730 | return Qnil; | |
1731 | if (code > 0x7FFFFFF) | |
1732 | return Fcons (make_number (code >> 16), make_number (code & 0xFFFF)); | |
1733 | return make_number (code); | |
6ae1f27e | 1734 | } |
9036eb45 | 1735 | |
87b089ad | 1736 | |
b121a744 KH |
1737 | DEFUN ("make-char", Fmake_char, Smake_char, 1, 5, 0, |
1738 | doc: | |
1739 | /* Return a character of CHARSET whose position codes are CODEn. | |
1740 | ||
1741 | CODE1 through CODE4 are optional, but if you don't supply sufficient | |
1742 | position codes, it is assumed that the minimum code in each dimension | |
04c2f2c5 | 1743 | is specified. */) |
b121a744 KH |
1744 | (charset, code1, code2, code3, code4) |
1745 | Lisp_Object charset, code1, code2, code3, code4; | |
87b089ad | 1746 | { |
3263d5a2 KH |
1747 | int id, dimension; |
1748 | struct charset *charsetp; | |
b121a744 KH |
1749 | unsigned code; |
1750 | int c; | |
87b089ad | 1751 | |
3263d5a2 KH |
1752 | CHECK_CHARSET_GET_ID (charset, id); |
1753 | charsetp = CHARSET_FROM_ID (id); | |
87b089ad | 1754 | |
b121a744 KH |
1755 | dimension = CHARSET_DIMENSION (charsetp); |
1756 | if (NILP (code1)) | |
d47073ca KH |
1757 | code = (CHARSET_ASCII_COMPATIBLE_P (charsetp) |
1758 | ? 0 : CHARSET_MIN_CODE (charsetp)); | |
3263d5a2 | 1759 | else |
87b089ad | 1760 | { |
b121a744 KH |
1761 | CHECK_NATNUM (code1); |
1762 | if (XFASTINT (code1) >= 0x100) | |
1763 | args_out_of_range (make_number (0xFF), code1); | |
1764 | code = XFASTINT (code1); | |
2e344af3 | 1765 | |
b0a1e45e | 1766 | if (dimension > 1) |
b121a744 KH |
1767 | { |
1768 | code <<= 8; | |
b0a1e45e KH |
1769 | if (NILP (code2)) |
1770 | code |= charsetp->code_space[(dimension - 2) * 4]; | |
b121a744 KH |
1771 | else |
1772 | { | |
b0a1e45e KH |
1773 | CHECK_NATNUM (code2); |
1774 | if (XFASTINT (code2) >= 0x100) | |
1775 | args_out_of_range (make_number (0xFF), code2); | |
1776 | code |= XFASTINT (code2); | |
b121a744 KH |
1777 | } |
1778 | ||
b0a1e45e | 1779 | if (dimension > 2) |
b121a744 KH |
1780 | { |
1781 | code <<= 8; | |
b0a1e45e KH |
1782 | if (NILP (code3)) |
1783 | code |= charsetp->code_space[(dimension - 3) * 4]; | |
b121a744 KH |
1784 | else |
1785 | { | |
b0a1e45e KH |
1786 | CHECK_NATNUM (code3); |
1787 | if (XFASTINT (code3) >= 0x100) | |
1788 | args_out_of_range (make_number (0xFF), code3); | |
1789 | code |= XFASTINT (code3); | |
1790 | } | |
1791 | ||
1792 | if (dimension > 3) | |
1793 | { | |
1794 | code <<= 8; | |
1795 | if (NILP (code4)) | |
1796 | code |= charsetp->code_space[0]; | |
1797 | else | |
1798 | { | |
1799 | CHECK_NATNUM (code4); | |
1800 | if (XFASTINT (code4) >= 0x100) | |
1801 | args_out_of_range (make_number (0xFF), code4); | |
1802 | code |= XFASTINT (code4); | |
1803 | } | |
b121a744 KH |
1804 | } |
1805 | } | |
1806 | } | |
1807 | } | |
3263d5a2 | 1808 | |
b121a744 KH |
1809 | if (CHARSET_ISO_FINAL (charsetp) >= 0) |
1810 | code &= 0x7F7F7F7F; | |
1811 | c = DECODE_CHAR (charsetp, code); | |
1812 | if (c < 0) | |
1813 | error ("Invalid code(s)"); | |
3263d5a2 | 1814 | return make_number (c); |
2e344af3 KH |
1815 | } |
1816 | ||
3263d5a2 KH |
1817 | |
1818 | /* Return the first charset in CHARSET_LIST that contains C. | |
1819 | CHARSET_LIST is a list of charset IDs. If it is nil, use | |
1820 | Vcharset_ordered_list. */ | |
1821 | ||
1822 | struct charset * | |
1823 | char_charset (c, charset_list, code_return) | |
1824 | int c; | |
1825 | Lisp_Object charset_list; | |
1826 | unsigned *code_return; | |
2e344af3 | 1827 | { |
3263d5a2 KH |
1828 | if (NILP (charset_list)) |
1829 | charset_list = Vcharset_ordered_list; | |
2e344af3 | 1830 | |
3263d5a2 | 1831 | while (CONSP (charset_list)) |
2e344af3 | 1832 | { |
3263d5a2 KH |
1833 | struct charset *charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); |
1834 | unsigned code = ENCODE_CHAR (charset, c); | |
1835 | ||
1836 | if (code != CHARSET_INVALID_CODE (charset)) | |
1837 | { | |
1838 | if (code_return) | |
1839 | *code_return = code; | |
1840 | return charset; | |
1841 | } | |
1842 | charset_list = XCDR (charset_list); | |
2e344af3 | 1843 | } |
3263d5a2 | 1844 | return NULL; |
2e344af3 KH |
1845 | } |
1846 | ||
2e344af3 | 1847 | |
56a46d1d | 1848 | /* Fixme: `unknown' can't happen now? */ |
3263d5a2 | 1849 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, |
04c2f2c5 | 1850 | doc: /*Return list of charset and one to three position-codes of CHAR. |
16fed1fc | 1851 | If CHAR is invalid as a character code, return a list `(unknown CHAR)'. */) |
3263d5a2 KH |
1852 | (ch) |
1853 | Lisp_Object ch; | |
2e344af3 | 1854 | { |
3263d5a2 KH |
1855 | struct charset *charset; |
1856 | int c, dimension; | |
1857 | unsigned code; | |
1858 | Lisp_Object val; | |
1859 | ||
1860 | CHECK_CHARACTER (ch); | |
1861 | c = XFASTINT (ch); | |
1862 | charset = CHAR_CHARSET (c); | |
1863 | if (! charset) | |
1864 | return Fcons (intern ("unknown"), Fcons (ch, Qnil)); | |
1865 | ||
1866 | code = ENCODE_CHAR (charset, c); | |
1867 | if (code == CHARSET_INVALID_CODE (charset)) | |
1868 | abort (); | |
1869 | dimension = CHARSET_DIMENSION (charset); | |
1870 | val = (dimension == 1 ? Fcons (make_number (code), Qnil) | |
1871 | : dimension == 2 ? Fcons (make_number (code >> 8), | |
1872 | Fcons (make_number (code & 0xFF), Qnil)) | |
1873 | : Fcons (make_number (code >> 16), | |
1874 | Fcons (make_number ((code >> 8) & 0xFF), | |
1875 | Fcons (make_number (code & 0xFF), Qnil)))); | |
1876 | return Fcons (CHARSET_NAME (charset), val); | |
2e344af3 | 1877 | } |
87b089ad | 1878 | |
740f080d | 1879 | |
3263d5a2 KH |
1880 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0, |
1881 | doc: /* Return the charset of highest priority that contains CHAR. */) | |
1882 | (ch) | |
1883 | Lisp_Object ch; | |
740f080d | 1884 | { |
3263d5a2 | 1885 | struct charset *charset; |
740f080d | 1886 | |
3263d5a2 KH |
1887 | CHECK_CHARACTER (ch); |
1888 | charset = CHAR_CHARSET (XINT (ch)); | |
1889 | return (CHARSET_NAME (charset)); | |
740f080d KH |
1890 | } |
1891 | ||
2e344af3 | 1892 | |
3263d5a2 KH |
1893 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
1894 | doc: /* | |
1895 | Return charset of a character in the current buffer at position POS. | |
1896 | If POS is nil, it defauls to the current point. | |
1897 | If POS is out of range, the value is nil. */) | |
1898 | (pos) | |
1899 | Lisp_Object pos; | |
2e344af3 | 1900 | { |
3263d5a2 KH |
1901 | Lisp_Object ch; |
1902 | struct charset *charset; | |
1903 | ||
1904 | ch = Fchar_after (pos); | |
1905 | if (! INTEGERP (ch)) | |
1906 | return ch; | |
1907 | charset = CHAR_CHARSET (XINT (ch)); | |
1908 | return (CHARSET_NAME (charset)); | |
87b089ad RS |
1909 | } |
1910 | ||
2e344af3 | 1911 | |
3263d5a2 KH |
1912 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
1913 | doc: /* | |
1914 | Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR. | |
1915 | ||
1916 | ISO 2022's designation sequence (escape sequence) distinguishes charsets | |
1917 | by their DIMENSION, CHARS, and FINAL-CHAR, | |
1918 | where as Emacs distinguishes them by charset symbol. | |
1919 | See the documentation of the function `charset-info' for the meanings of | |
1920 | DIMENSION, CHARS, and FINAL-CHAR. */) | |
1921 | (dimension, chars, final_char) | |
1922 | Lisp_Object dimension, chars, final_char; | |
2e344af3 | 1923 | { |
3263d5a2 | 1924 | int id; |
2e344af3 | 1925 | |
3263d5a2 KH |
1926 | check_iso_charset_parameter (dimension, chars, final_char); |
1927 | id = ISO_CHARSET_TABLE (XFASTINT (dimension), XFASTINT (chars), | |
1928 | XFASTINT (final_char)); | |
1929 | return (id >= 0 ? CHARSET_NAME (CHARSET_FROM_ID (id)) : Qnil); | |
2e344af3 KH |
1930 | } |
1931 | ||
3263d5a2 KH |
1932 | |
1933 | DEFUN ("clear-charset-maps", Fclear_charset_maps, Sclear_charset_maps, | |
1934 | 0, 0, 0, | |
1935 | doc: /* | |
1936 | Clear encoder and decoder of charsets that are loaded from mapfiles. */) | |
1937 | () | |
4ed46869 | 1938 | { |
53316e55 | 1939 | int i; |
3263d5a2 KH |
1940 | struct charset *charset; |
1941 | Lisp_Object attrs; | |
4ed46869 | 1942 | |
3263d5a2 | 1943 | for (i = 0; i < charset_table_used; i++) |
4ed46869 | 1944 | { |
3263d5a2 KH |
1945 | charset = CHARSET_FROM_ID (i); |
1946 | attrs = CHARSET_ATTRIBUTES (charset); | |
1947 | ||
1948 | if (CHARSET_METHOD (charset) == CHARSET_METHOD_MAP) | |
1949 | { | |
1950 | CHARSET_ATTR_DECODER (attrs) = Qnil; | |
1951 | CHARSET_ATTR_ENCODER (attrs) = Qnil; | |
1952 | CHARSET_METHOD (charset) = CHARSET_METHOD_MAP_DEFERRED; | |
1953 | } | |
1954 | ||
1955 | if (CHARSET_UNIFIED_P (charset)) | |
1956 | CHARSET_ATTR_DEUNIFIER (attrs) = Qnil; | |
5729c92f KH |
1957 | } |
1958 | ||
3263d5a2 | 1959 | if (CHAR_TABLE_P (Vchar_unified_charset_table)) |
5729c92f | 1960 | { |
3263d5a2 KH |
1961 | Foptimize_char_table (Vchar_unified_charset_table); |
1962 | Vchar_unify_table = Vchar_unified_charset_table; | |
1963 | Vchar_unified_charset_table = Qnil; | |
4ed46869 KH |
1964 | } |
1965 | ||
3263d5a2 | 1966 | return Qnil; |
4ed46869 KH |
1967 | } |
1968 | ||
8ddf5e57 DL |
1969 | DEFUN ("charset-priority-list", Fcharset_priority_list, |
1970 | Scharset_priority_list, 0, 1, 0, | |
1971 | doc: /* Return the list of charsets ordered by priority. | |
1972 | HIGHESTP non-nil means just return the highest priority one. */) | |
1973 | (highestp) | |
1974 | Lisp_Object highestp; | |
1975 | { | |
1976 | Lisp_Object val = Qnil, list = Vcharset_ordered_list; | |
1977 | ||
1978 | if (!NILP (highestp)) | |
16fed1fc | 1979 | return CHARSET_NAME (CHARSET_FROM_ID (XINT (Fcar (list)))); |
8ddf5e57 DL |
1980 | |
1981 | while (!NILP (list)) | |
1982 | { | |
16fed1fc | 1983 | val = Fcons (CHARSET_NAME (CHARSET_FROM_ID (XINT (XCAR (list)))), val); |
8ddf5e57 DL |
1984 | list = XCDR (list); |
1985 | } | |
1986 | return Fnreverse (val); | |
1987 | } | |
1988 | ||
1989 | DEFUN ("set-charset-priority", Fset_charset_priority, Sset_charset_priority, | |
1990 | 1, MANY, 0, | |
1991 | doc: /* Assign higher priority to the charsets given as arguments. | |
1992 | usage: (set-charset-priority &rest charsets) */) | |
1993 | (nargs, args) | |
1994 | int nargs; | |
1995 | Lisp_Object *args; | |
1996 | { | |
16fed1fc DL |
1997 | Lisp_Object new_head = Qnil, old_list, arglist[2]; |
1998 | int i, id; | |
8ddf5e57 DL |
1999 | |
2000 | old_list = Fcopy_sequence (Vcharset_ordered_list); | |
2001 | for (i = 0; i < nargs; i++) | |
2002 | { | |
2003 | CHECK_CHARSET_GET_ID (args[i], id); | |
16fed1fc DL |
2004 | old_list = Fdelq (make_number (id), old_list); |
2005 | new_head = Fcons (make_number (id), new_head); | |
8ddf5e57 DL |
2006 | } |
2007 | arglist[0] = Fnreverse (new_head); | |
2008 | arglist[1] = old_list; | |
2009 | Vcharset_ordered_list = Fnconc (2, arglist); | |
dbbb237d | 2010 | charset_ordered_list_tick++; |
d017b41e KH |
2011 | |
2012 | for (old_list = Vcharset_ordered_list, new_head = Qnil; | |
2013 | CONSP (old_list); old_list = XCDR (old_list)) | |
2014 | { | |
e77415b0 | 2015 | if (! NILP (Fmemq (XCAR (old_list), Viso_2022_charset_list))) |
d017b41e KH |
2016 | new_head = Fcons (XCAR (old_list), new_head); |
2017 | } | |
2018 | Viso_2022_charset_list = Fnreverse (new_head); | |
2019 | ||
8ddf5e57 DL |
2020 | return Qnil; |
2021 | } | |
4ed46869 | 2022 | \f |
3263d5a2 KH |
2023 | void |
2024 | init_charset () | |
4ed46869 | 2025 | { |
4ed46869 | 2026 | |
4ed46869 KH |
2027 | } |
2028 | ||
4ed46869 | 2029 | |
dfcf069d | 2030 | void |
4ed46869 KH |
2031 | init_charset_once () |
2032 | { | |
2033 | int i, j, k; | |
2034 | ||
3263d5a2 KH |
2035 | for (i = 0; i < ISO_MAX_DIMENSION; i++) |
2036 | for (j = 0; j < ISO_MAX_CHARS; j++) | |
2037 | for (k = 0; k < ISO_MAX_FINAL; k++) | |
2038 | iso_charset_table[i][j][k] = -1; | |
2039 | ||
14e3d523 | 2040 | for (i = 0; i < 256; i++) |
3263d5a2 | 2041 | emacs_mule_charset[i] = NULL; |
4ed46869 | 2042 | |
7c7dceee KH |
2043 | charset_jisx0201_roman = -1; |
2044 | charset_jisx0208_1978 = -1; | |
2045 | charset_jisx0208 = -1; | |
2046 | ||
14e3d523 KH |
2047 | for (i = 0; i < 256; i++) |
2048 | unibyte_to_multibyte_table[i] = i; | |
4ed46869 KH |
2049 | } |
2050 | ||
2051 | #ifdef emacs | |
2052 | ||
dfcf069d | 2053 | void |
4ed46869 KH |
2054 | syms_of_charset () |
2055 | { | |
3263d5a2 KH |
2056 | char *p; |
2057 | ||
2058 | DEFSYM (Qcharsetp, "charsetp"); | |
2059 | ||
2060 | DEFSYM (Qascii, "ascii"); | |
2061 | DEFSYM (Qunicode, "unicode"); | |
2fe1edd1 | 2062 | DEFSYM (Qeight_bit, "eight-bit"); |
3263d5a2 KH |
2063 | DEFSYM (Qiso_8859_1, "iso-8859-1"); |
2064 | ||
2065 | DEFSYM (Qgl, "gl"); | |
2066 | DEFSYM (Qgr, "gr"); | |
2067 | ||
2068 | p = (char *) xmalloc (30000); | |
2069 | ||
2070 | staticpro (&Vcharset_ordered_list); | |
2071 | Vcharset_ordered_list = Qnil; | |
2072 | ||
2073 | staticpro (&Viso_2022_charset_list); | |
2074 | Viso_2022_charset_list = Qnil; | |
2075 | ||
2076 | staticpro (&Vemacs_mule_charset_list); | |
2077 | Vemacs_mule_charset_list = Qnil; | |
2078 | ||
2079 | staticpro (&Vcharset_hash_table); | |
2080 | Vcharset_hash_table = Fmakehash (Qeq); | |
2081 | ||
2082 | charset_table_size = 128; | |
2083 | charset_table = ((struct charset *) | |
2084 | xmalloc (sizeof (struct charset) * charset_table_size)); | |
2085 | charset_table_used = 0; | |
2086 | ||
2087 | staticpro (&Vchar_unified_charset_table); | |
2088 | Vchar_unified_charset_table = Fmake_char_table (Qnil, make_number (-1)); | |
2089 | ||
2090 | defsubr (&Scharsetp); | |
2091 | defsubr (&Smap_charset_chars); | |
2092 | defsubr (&Sdefine_charset_internal); | |
2093 | defsubr (&Sdefine_charset_alias); | |
d1a04588 KH |
2094 | defsubr (&Sunibyte_charset); |
2095 | defsubr (&Sset_unibyte_charset); | |
3263d5a2 KH |
2096 | defsubr (&Scharset_plist); |
2097 | defsubr (&Sset_charset_plist); | |
2098 | defsubr (&Sunify_charset); | |
3fac5a51 | 2099 | defsubr (&Sget_unused_iso_final_char); |
4ed46869 KH |
2100 | defsubr (&Sdeclare_equiv_charset); |
2101 | defsubr (&Sfind_charset_region); | |
2102 | defsubr (&Sfind_charset_string); | |
3263d5a2 KH |
2103 | defsubr (&Sdecode_char); |
2104 | defsubr (&Sencode_char); | |
4ed46869 | 2105 | defsubr (&Ssplit_char); |
3263d5a2 | 2106 | defsubr (&Smake_char); |
4ed46869 | 2107 | defsubr (&Schar_charset); |
90d7b74e | 2108 | defsubr (&Scharset_after); |
4ed46869 | 2109 | defsubr (&Siso_charset); |
3263d5a2 | 2110 | defsubr (&Sclear_charset_maps); |
8ddf5e57 DL |
2111 | defsubr (&Scharset_priority_list); |
2112 | defsubr (&Sset_charset_priority); | |
3263d5a2 KH |
2113 | |
2114 | DEFVAR_LISP ("charset-map-directory", &Vcharset_map_directory, | |
2115 | doc: /* Directory of charset map files that come with GNU Emacs. | |
04c2f2c5 | 2116 | The default value is sub-directory "charsets" of `data-directory'. */); |
3263d5a2 KH |
2117 | Vcharset_map_directory = Fexpand_file_name (build_string ("charsets"), |
2118 | Vdata_directory); | |
4ed46869 KH |
2119 | |
2120 | DEFVAR_LISP ("charset-list", &Vcharset_list, | |
528623a0 | 2121 | doc: /* List of all charsets ever defined. */); |
3263d5a2 KH |
2122 | Vcharset_list = Qnil; |
2123 | ||
2fe1edd1 KH |
2124 | charset_ascii |
2125 | = define_charset_internal (Qascii, 1, "\x00\x7F\x00\x00\x00\x00", | |
2126 | 0, 127, 'B', -1, 0, 1, 0, 0); | |
14e3d523 KH |
2127 | charset_iso_8859_1 |
2128 | = define_charset_internal (Qiso_8859_1, 1, "\x00\xFF\x00\x00\x00\x00", | |
2129 | 0, 255, -1, -1, -1, 1, 0, 0); | |
2fe1edd1 | 2130 | charset_unicode |
73fbf2d9 | 2131 | = define_charset_internal (Qunicode, 3, "\x00\xFF\x00\xFF\x00\x10", |
2fe1edd1 KH |
2132 | 0, MAX_UNICODE_CHAR, -1, 0, -1, 1, 0, 0); |
2133 | charset_eight_bit | |
2134 | = define_charset_internal (Qeight_bit, 1, "\x80\xFF\x00\x00\x00\x00", | |
2135 | 128, 255, -1, 0, -1, 0, 0, | |
2136 | MAX_5_BYTE_CHAR + 1); | |
4ed46869 KH |
2137 | } |
2138 | ||
2139 | #endif /* emacs */ |