Commit | Line | Data |
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3263d5a2 | 1 | /* Header for charset handler. |
73b0cd50 | 2 | Copyright (C) 2001-2011 Free Software Foundation, Inc. |
7976eda0 | 3 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
5df4f04c | 4 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
ce03bf76 KH |
5 | National Institute of Advanced Industrial Science and Technology (AIST) |
6 | Registration Number H14PRO021 | |
4ed46869 | 7 | |
8f924df7 | 8 | Copyright (C) 2003 |
3263d5a2 KH |
9 | National Institute of Advanced Industrial Science and Technology (AIST) |
10 | Registration Number H13PRO009 | |
4ed46869 | 11 | |
369314dc KH |
12 | This file is part of GNU Emacs. |
13 | ||
b9b1cc14 | 14 | GNU Emacs is free software: you can redistribute it and/or modify |
369314dc | 15 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
16 | the Free Software Foundation, either version 3 of the License, or |
17 | (at your option) any later version. | |
4ed46869 | 18 | |
369314dc KH |
19 | GNU Emacs is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
4ed46869 | 23 | |
369314dc | 24 | You should have received a copy of the GNU General Public License |
b9b1cc14 | 25 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ed46869 | 26 | |
aa01a892 KH |
27 | #ifndef EMACS_CHARSET_H |
28 | #define EMACS_CHARSET_H | |
4ed46869 | 29 | |
3263d5a2 KH |
30 | /* Index to arguments of Fdefine_charset_internal. */ |
31 | ||
32 | enum define_charset_arg_index | |
33 | { | |
34 | charset_arg_name, | |
35 | charset_arg_dimension, | |
36 | charset_arg_code_space, | |
315c0139 KH |
37 | charset_arg_min_code, |
38 | charset_arg_max_code, | |
3263d5a2 KH |
39 | charset_arg_iso_final, |
40 | charset_arg_iso_revision, | |
41 | charset_arg_emacs_mule_id, | |
42 | charset_arg_ascii_compatible_p, | |
43 | charset_arg_supplementary_p, | |
44 | charset_arg_invalid_code, | |
45 | charset_arg_code_offset, | |
46 | charset_arg_map, | |
ec7dd615 KH |
47 | charset_arg_subset, |
48 | charset_arg_superset, | |
3263d5a2 KH |
49 | charset_arg_unify_map, |
50 | charset_arg_plist, | |
51 | charset_arg_max | |
52 | }; | |
53 | ||
54 | ||
55 | /* Indices to charset attributes vector. */ | |
56 | ||
57 | enum charset_attr_index | |
58 | { | |
59 | /* ID number of the charset. */ | |
60 | charset_id, | |
4ed46869 | 61 | |
3263d5a2 KH |
62 | /* Name of the charset (symbol). */ |
63 | charset_name, | |
64 | ||
65 | /* Property list of the charset. */ | |
66 | charset_plist, | |
67 | ||
2bc20f0b KH |
68 | /* If the method of the charset is `MAP', the value is a mapping |
69 | vector or a file name that contains mapping vector. Otherwise, | |
70 | nil. */ | |
3263d5a2 KH |
71 | charset_map, |
72 | ||
73 | /* If the method of the charset is `MAP', the value is a vector | |
74 | that maps code points of the charset to characters. The vector | |
75 | is indexed by a character index. A character index is | |
76 | calculated from a code point and the code-space table of the | |
77 | charset. */ | |
78 | charset_decoder, | |
79 | ||
80 | /* If the method of the charset is `MAP', the value is a | |
81 | char-table that maps characters of the charset to code | |
82 | points. */ | |
83 | charset_encoder, | |
84 | ||
ec7dd615 KH |
85 | /* If the method of the charset is `SUBSET', the value is a vector |
86 | that has this form: | |
87 | ||
88 | [ CHARSET-ID MIN-CODE MAX-CODE OFFSET ] | |
89 | ||
90 | CHARSET-ID is an ID number of a parent charset. MIN-CODE and | |
91 | MAX-CODE specify the range of characters inherited from the | |
92 | parent. OFFSET is an integer value to add to a code point of | |
93 | the parent charset to get the corresponding code point of this | |
94 | charset. */ | |
95 | charset_subset, | |
96 | ||
97 | /* If the method of the charset is `SUPERSET', the value is a list | |
98 | whose elements have this form: | |
99 | ||
100 | (CHARSET-ID . OFFSET) | |
101 | ||
924b41ee JB |
102 | CHARSET-IDs are ID numbers of parent charsets. OFFSET is an |
103 | integer value to add to a code point of the parent charset to | |
104 | get the corresponding code point of this charset. */ | |
ec7dd615 | 105 | charset_superset, |
3263d5a2 | 106 | |
7619dee9 DL |
107 | /* The value is a mapping vector or a file name that contains the |
108 | mapping. This defines how characters in the charset should be | |
109 | unified with Unicode. The value of the member | |
3e4abc9e | 110 | `charset_deunifier' is created from this information. */ |
3263d5a2 KH |
111 | charset_unify_map, |
112 | ||
3e4abc9e | 113 | /* If characters in the charset must be unified Unicode, the value |
1c305bc1 KH |
114 | is a char table that maps a unified Unicode character code to |
115 | the non-unified character code in the charset. */ | |
3263d5a2 KH |
116 | charset_deunifier, |
117 | ||
7619dee9 | 118 | /* The length of the charset attribute vector. */ |
3263d5a2 KH |
119 | charset_attr_max |
120 | }; | |
121 | ||
122 | /* Methods for converting code points and characters of charsets. */ | |
123 | ||
124 | enum charset_method | |
125 | { | |
126 | /* For a charset of this method, a character code is calculated | |
127 | from a character index (which is calculated from a code point) | |
128 | simply by adding an offset value. */ | |
129 | CHARSET_METHOD_OFFSET, | |
130 | ||
131 | /* For a charset of this method, a decoder vector and an encoder | |
132 | char-table is used for code point <-> character code | |
133 | conversion. */ | |
134 | CHARSET_METHOD_MAP, | |
135 | ||
7619dee9 | 136 | /* A charset of this method is a subset of another charset. */ |
ec7dd615 KH |
137 | CHARSET_METHOD_SUBSET, |
138 | ||
7619dee9 | 139 | /* A charset of this method is a superset of other charsets. */ |
ec7dd615 | 140 | CHARSET_METHOD_SUPERSET |
3263d5a2 KH |
141 | }; |
142 | ||
143 | struct charset | |
144 | { | |
3e4abc9e | 145 | /* Index to charset_table. */ |
3263d5a2 | 146 | int id; |
4ed46869 | 147 | |
3e4abc9e | 148 | /* Index to Vcharset_hash_table. */ |
0de4bb68 | 149 | EMACS_INT hash_index; |
3263d5a2 KH |
150 | |
151 | /* Dimension of the charset: 1, 2, 3, or 4. */ | |
152 | int dimension; | |
153 | ||
ac6a8028 KH |
154 | /* Byte code range of each dimension. <code_space>[4N] is a mininum |
155 | byte code of the (N+1)th dimension, <code_space>[4N+1] is a | |
156 | maximum byte code of the (N+1)th dimension, <code_space>[4N+2] is | |
157 | (<code_space>[4N+1] - <code_space>[4N] + 1), <code_space>[4N+3] | |
c032b5f8 PE |
158 | is the number of characters contained in the first through (N+1)th |
159 | dimensions, except that there is no <code_space>[15]. | |
160 | We get `char-index' of a `code-point' from this | |
ac6a8028 | 161 | information. */ |
c032b5f8 | 162 | int code_space[15]; |
54e15bb9 | 163 | |
ac6a8028 KH |
164 | /* If B is a byte of Nth dimension of a code-point, the (N-1)th bit |
165 | of code_space_mask[B] is set. This array is used to quickly | |
166 | check if a code-point is in a valid range. */ | |
167 | unsigned char *code_space_mask; | |
d3985b78 | 168 | |
3263d5a2 KH |
169 | /* 1 if there's no gap in code-points. */ |
170 | int code_linear_p; | |
d3985b78 | 171 | |
3263d5a2 KH |
172 | /* If the charset is treated as 94-chars in ISO-2022, the value is 0. |
173 | If the charset is treated as 96-chars in ISO-2022, the value is 1. */ | |
174 | int iso_chars_96; | |
d3985b78 | 175 | |
3e4abc9e KH |
176 | /* ISO final byte of the charset: 48..127. It may be -1 if the |
177 | charset doesn't conform to ISO-2022. */ | |
3263d5a2 | 178 | int iso_final; |
d3985b78 | 179 | |
3e4abc9e | 180 | /* ISO revision number of the charset. */ |
3263d5a2 | 181 | int iso_revision; |
d3985b78 | 182 | |
3263d5a2 KH |
183 | /* If the charset is identical to what supported by Emacs 21 and the |
184 | priors, the identification number of the charset used in those | |
185 | version. Otherwise, -1. */ | |
186 | int emacs_mule_id; | |
187 | ||
b2e6b10f | 188 | /* Nonzero if the charset is compatible with ASCII. */ |
3263d5a2 | 189 | int ascii_compatible_p; |
4ed46869 | 190 | |
b2e6b10f | 191 | /* Nonzero if the charset is supplementary. */ |
3263d5a2 KH |
192 | int supplementary_p; |
193 | ||
b2e6b10f | 194 | /* Nonzero if all the code points are representable by Lisp_Int. */ |
3263d5a2 KH |
195 | int compact_codes_p; |
196 | ||
197 | /* The method for encoding/decoding characters of the charset. */ | |
198 | enum charset_method method; | |
199 | ||
200 | /* Mininum and Maximum code points of the charset. */ | |
201 | unsigned min_code, max_code; | |
202 | ||
315c0139 KH |
203 | /* Offset value used by macros CODE_POINT_TO_INDEX and |
204 | INDEX_TO_CODE_POINT. . */ | |
205 | unsigned char_index_offset; | |
206 | ||
3263d5a2 KH |
207 | /* Mininum and Maximum character codes of the charset. If the |
208 | charset is compatible with ASCII, min_char is a minimum non-ASCII | |
39d992af KH |
209 | character of the charset. If the method of charset is |
210 | CHARSET_METHOD_OFFSET, even if the charset is unified, min_char | |
211 | and max_char doesn't change. */ | |
3263d5a2 KH |
212 | int min_char, max_char; |
213 | ||
214 | /* The code returned by ENCODE_CHAR if a character is not encodable | |
215 | by the charset. */ | |
216 | unsigned invalid_code; | |
217 | ||
218 | /* If the method of the charset is CHARSET_METHOD_MAP, this is a | |
219 | table of bits used to quickly and roughly guess if a character | |
220 | belongs to the charset. | |
221 | ||
222 | The first 64 elements are 512 bits for characters less than | |
223 | 0x10000. Each bit corresponds to 128-character block. The last | |
224 | 126 elements are 1008 bits for the greater characters | |
225 | (0x10000..0x3FFFFF). Each bit corresponds to 4096-character | |
226 | block. | |
227 | ||
7619dee9 | 228 | If a bit is 1, at least one character in the corresponding block is |
3263d5a2 KH |
229 | in this charset. */ |
230 | unsigned char fast_map[190]; | |
231 | ||
232 | /* Offset value to calculate a character code from code-point, and | |
233 | visa versa. */ | |
234 | int code_offset; | |
235 | ||
236 | int unified_p; | |
237 | }; | |
238 | ||
239 | /* Hash table of charset symbols vs. the correponding attribute | |
240 | vectors. */ | |
241 | extern Lisp_Object Vcharset_hash_table; | |
242 | ||
243 | /* Table of struct charset. */ | |
244 | extern struct charset *charset_table; | |
3263d5a2 KH |
245 | |
246 | #define CHARSET_FROM_ID(id) (charset_table + (id)) | |
247 | ||
39d992af | 248 | extern Lisp_Object Vcharset_ordered_list; |
370cefff | 249 | extern Lisp_Object Vcharset_non_preferred_head; |
39d992af KH |
250 | |
251 | /* Incremented everytime we change the priority of charsets. */ | |
a0b31951 | 252 | extern unsigned short charset_ordered_list_tick; |
39d992af | 253 | |
3263d5a2 KH |
254 | extern Lisp_Object Viso_2022_charset_list; |
255 | extern Lisp_Object Vemacs_mule_charset_list; | |
256 | ||
b84ae584 | 257 | extern int emacs_mule_charset[256]; |
3263d5a2 | 258 | |
3263d5a2 KH |
259 | /* Macros to access information about charset. */ |
260 | ||
261 | /* Return the attribute vector of charset whose symbol is SYMBOL. */ | |
262 | #define CHARSET_SYMBOL_ATTRIBUTES(symbol) \ | |
263 | Fgethash ((symbol), Vcharset_hash_table, Qnil) | |
264 | ||
265 | #define CHARSET_ATTR_ID(attrs) AREF ((attrs), charset_id) | |
266 | #define CHARSET_ATTR_NAME(attrs) AREF ((attrs), charset_name) | |
267 | #define CHARSET_ATTR_PLIST(attrs) AREF ((attrs), charset_plist) | |
268 | #define CHARSET_ATTR_MAP(attrs) AREF ((attrs), charset_map) | |
269 | #define CHARSET_ATTR_DECODER(attrs) AREF ((attrs), charset_decoder) | |
270 | #define CHARSET_ATTR_ENCODER(attrs) AREF ((attrs), charset_encoder) | |
ec7dd615 KH |
271 | #define CHARSET_ATTR_SUBSET(attrs) AREF ((attrs), charset_subset) |
272 | #define CHARSET_ATTR_SUPERSET(attrs) AREF ((attrs), charset_superset) | |
3263d5a2 KH |
273 | #define CHARSET_ATTR_UNIFY_MAP(attrs) AREF ((attrs), charset_unify_map) |
274 | #define CHARSET_ATTR_DEUNIFIER(attrs) AREF ((attrs), charset_deunifier) | |
275 | ||
276 | #define CHARSET_SYMBOL_ID(symbol) \ | |
277 | CHARSET_ATTR_ID (CHARSET_SYMBOL_ATTRIBUTES (symbol)) | |
278 | ||
279 | /* Return an index to Vcharset_hash_table of the charset whose symbol | |
280 | is SYMBOL. */ | |
281 | #define CHARSET_SYMBOL_HASH_INDEX(symbol) \ | |
282 | hash_lookup (XHASH_TABLE (Vcharset_hash_table), symbol, NULL) | |
283 | ||
284 | /* Return the attribute vector of CHARSET. */ | |
285 | #define CHARSET_ATTRIBUTES(charset) \ | |
286 | (HASH_VALUE (XHASH_TABLE (Vcharset_hash_table), (charset)->hash_index)) | |
287 | ||
288 | #define CHARSET_ID(charset) ((charset)->id) | |
289 | #define CHARSET_HASH_INDEX(charset) ((charset)->hash_index) | |
290 | #define CHARSET_DIMENSION(charset) ((charset)->dimension) | |
291 | #define CHARSET_CODE_SPACE(charset) ((charset)->code_space) | |
292 | #define CHARSET_CODE_LINEAR_P(charset) ((charset)->code_linear_p) | |
293 | #define CHARSET_ISO_CHARS_96(charset) ((charset)->iso_chars_96) | |
294 | #define CHARSET_ISO_FINAL(charset) ((charset)->iso_final) | |
295 | #define CHARSET_ISO_PLANE(charset) ((charset)->iso_plane) | |
296 | #define CHARSET_ISO_REVISION(charset) ((charset)->iso_revision) | |
297 | #define CHARSET_EMACS_MULE_ID(charset) ((charset)->emacs_mule_id) | |
298 | #define CHARSET_ASCII_COMPATIBLE_P(charset) ((charset)->ascii_compatible_p) | |
299 | #define CHARSET_COMPACT_CODES_P(charset) ((charset)->compact_codes_p) | |
300 | #define CHARSET_METHOD(charset) ((charset)->method) | |
301 | #define CHARSET_MIN_CODE(charset) ((charset)->min_code) | |
302 | #define CHARSET_MAX_CODE(charset) ((charset)->max_code) | |
303 | #define CHARSET_INVALID_CODE(charset) ((charset)->invalid_code) | |
304 | #define CHARSET_MIN_CHAR(charset) ((charset)->min_char) | |
305 | #define CHARSET_MAX_CHAR(charset) ((charset)->max_char) | |
306 | #define CHARSET_CODE_OFFSET(charset) ((charset)->code_offset) | |
307 | #define CHARSET_UNIFIED_P(charset) ((charset)->unified_p) | |
308 | ||
309 | #define CHARSET_NAME(charset) \ | |
310 | (CHARSET_ATTR_NAME (CHARSET_ATTRIBUTES (charset))) | |
311 | #define CHARSET_MAP(charset) \ | |
312 | (CHARSET_ATTR_MAP (CHARSET_ATTRIBUTES (charset))) | |
313 | #define CHARSET_DECODER(charset) \ | |
314 | (CHARSET_ATTR_DECODER (CHARSET_ATTRIBUTES (charset))) | |
315 | #define CHARSET_ENCODER(charset) \ | |
316 | (CHARSET_ATTR_ENCODER (CHARSET_ATTRIBUTES (charset))) | |
ec7dd615 KH |
317 | #define CHARSET_SUBSET(charset) \ |
318 | (CHARSET_ATTR_SUBSET (CHARSET_ATTRIBUTES (charset))) | |
319 | #define CHARSET_SUPERSET(charset) \ | |
320 | (CHARSET_ATTR_SUPERSET (CHARSET_ATTRIBUTES (charset))) | |
3263d5a2 KH |
321 | #define CHARSET_UNIFY_MAP(charset) \ |
322 | (CHARSET_ATTR_UNIFY_MAP (CHARSET_ATTRIBUTES (charset))) | |
323 | #define CHARSET_DEUNIFIER(charset) \ | |
324 | (CHARSET_ATTR_DEUNIFIER (CHARSET_ATTRIBUTES (charset))) | |
325 | ||
326 | ||
b2e6b10f | 327 | /* Nonzero if OBJ is a valid charset symbol. */ |
3263d5a2 KH |
328 | #define CHARSETP(obj) (CHARSET_SYMBOL_HASH_INDEX (obj) >= 0) |
329 | ||
330 | /* Check if X is a valid charset symbol. If not, signal an error. */ | |
331 | #define CHECK_CHARSET(x) \ | |
384107f2 | 332 | do { \ |
3263d5a2 | 333 | if (! SYMBOLP (x) || CHARSET_SYMBOL_HASH_INDEX (x) < 0) \ |
43d1af23 | 334 | wrong_type_argument (Qcharsetp, (x)); \ |
384107f2 | 335 | } while (0) |
6e4dc3e1 | 336 | |
6e4dc3e1 | 337 | |
3263d5a2 KH |
338 | /* Check if X is a valid charset symbol. If valid, set ID to the id |
339 | number of the charset. Otherwise, signal an error. */ | |
340 | #define CHECK_CHARSET_GET_ID(x, id) \ | |
341 | do { \ | |
342 | int idx; \ | |
343 | \ | |
344 | if (! SYMBOLP (x) || (idx = CHARSET_SYMBOL_HASH_INDEX (x)) < 0) \ | |
43d1af23 | 345 | wrong_type_argument (Qcharsetp, (x)); \ |
73e92b8c DL |
346 | id = XINT (AREF (HASH_VALUE (XHASH_TABLE (Vcharset_hash_table), idx), \ |
347 | charset_id)); \ | |
4ed46869 KH |
348 | } while (0) |
349 | ||
6e4dc3e1 | 350 | |
3263d5a2 KH |
351 | /* Check if X is a valid charset symbol. If valid, set ATTR to the |
352 | attr vector of the charset. Otherwise, signal an error. */ | |
353 | #define CHECK_CHARSET_GET_ATTR(x, attr) \ | |
354 | do { \ | |
355 | if (!SYMBOLP (x) || NILP (attr = CHARSET_SYMBOL_ATTRIBUTES (x))) \ | |
43d1af23 | 356 | wrong_type_argument (Qcharsetp, (x)); \ |
6e4dc3e1 KH |
357 | } while (0) |
358 | ||
6e4dc3e1 | 359 | |
3263d5a2 KH |
360 | #define CHECK_CHARSET_GET_CHARSET(x, charset) \ |
361 | do { \ | |
f6095868 PE |
362 | int csid; \ |
363 | CHECK_CHARSET_GET_ID (x, csid); \ | |
364 | charset = CHARSET_FROM_ID (csid); \ | |
c399b461 RS |
365 | } while (0) |
366 | ||
c399b461 | 367 | |
924b41ee | 368 | /* Lookup Vcharset_ordered_list and return the first charset that |
3263d5a2 | 369 | contains the character C. */ |
ec91b3c9 KH |
370 | #define CHAR_CHARSET(c) \ |
371 | ((c) < 0x80 ? CHARSET_FROM_ID (charset_ascii) \ | |
372 | : char_charset ((c), Qnil, NULL)) | |
c399b461 | 373 | |
3263d5a2 KH |
374 | #if 0 |
375 | /* Char-table of charset-sets. Each element is a bool vector indexed | |
376 | by a charset ID. */ | |
377 | extern Lisp_Object Vchar_charset_set; | |
6e4dc3e1 | 378 | |
3263d5a2 KH |
379 | /* Charset-bag of character C. */ |
380 | #define CHAR_CHARSET_SET(c) \ | |
381 | CHAR_TABLE_REF (Vchar_charset_set, c) | |
6e4dc3e1 | 382 | |
3263d5a2 KH |
383 | /* Check if two characters C1 and C2 belong to the same charset. */ |
384 | #define SAME_CHARSET_P(c1, c2) \ | |
385 | intersection_p (CHAR_CHARSET_SET (c1), CHAR_CHARSET_SET (c2)) | |
386 | ||
387 | #endif | |
388 | ||
389 | ||
390 | /* Return a character correponding to the code-point CODE of CHARSET. | |
391 | Try some optimization before calling decode_char. */ | |
392 | ||
393 | #define DECODE_CHAR(charset, code) \ | |
394 | ((ASCII_BYTE_P (code) && (charset)->ascii_compatible_p) \ | |
395 | ? (code) \ | |
396 | : ((code) < (charset)->min_code || (code) > (charset)->max_code) \ | |
397 | ? -1 \ | |
398 | : (charset)->unified_p \ | |
399 | ? decode_char ((charset), (code)) \ | |
400 | : (charset)->method == CHARSET_METHOD_OFFSET \ | |
401 | ? ((charset)->code_linear_p \ | |
402 | ? (code) - (charset)->min_code + (charset)->code_offset \ | |
403 | : decode_char ((charset), (code))) \ | |
404 | : (charset)->method == CHARSET_METHOD_MAP \ | |
2bc20f0b KH |
405 | ? (((charset)->code_linear_p \ |
406 | && VECTORP (CHARSET_DECODER (charset))) \ | |
3263d5a2 | 407 | ? XINT (AREF (CHARSET_DECODER (charset), \ |
2bc20f0b | 408 | (code) - (charset)->min_code)) \ |
3263d5a2 KH |
409 | : decode_char ((charset), (code))) \ |
410 | : decode_char ((charset), (code))) | |
411 | ||
412 | ||
8cf93b6e KH |
413 | /* If CHARSET is a simple offset base charset, return it's offset, |
414 | otherwise return -1. */ | |
415 | #define CHARSET_OFFSET(charset) \ | |
416 | (((charset)->method == CHARSET_METHOD_OFFSET \ | |
417 | && (charset)->code_linear_p \ | |
418 | && ! (charset)->unified_p) \ | |
419 | ? (charset)->code_offset - (charset)->min_code \ | |
420 | : -1) | |
421 | ||
ec7dd615 KH |
422 | extern Lisp_Object charset_work; |
423 | ||
3263d5a2 KH |
424 | /* Return a code point of CHAR in CHARSET. |
425 | Try some optimization before calling encode_char. */ | |
426 | ||
ec7dd615 KH |
427 | #define ENCODE_CHAR(charset, c) \ |
428 | ((ASCII_CHAR_P (c) && (charset)->ascii_compatible_p) \ | |
429 | ? (c) \ | |
9a02732d KH |
430 | : ((charset)->unified_p \ |
431 | || (charset)->method == CHARSET_METHOD_SUBSET \ | |
432 | || (charset)->method == CHARSET_METHOD_SUPERSET) \ | |
ec7dd615 KH |
433 | ? encode_char ((charset), (c)) \ |
434 | : ((c) < (charset)->min_char || (c) > (charset)->max_char) \ | |
435 | ? (charset)->invalid_code \ | |
436 | : (charset)->method == CHARSET_METHOD_OFFSET \ | |
437 | ? ((charset)->code_linear_p \ | |
438 | ? (c) - (charset)->code_offset + (charset)->min_code \ | |
439 | : encode_char ((charset), (c))) \ | |
440 | : (charset)->method == CHARSET_METHOD_MAP \ | |
2bc20f0b KH |
441 | ? (((charset)->compact_codes_p \ |
442 | && CHAR_TABLE_P (CHARSET_ENCODER (charset))) \ | |
ec7dd615 KH |
443 | ? (charset_work = CHAR_TABLE_REF (CHARSET_ENCODER (charset), (c)), \ |
444 | (NILP (charset_work) \ | |
445 | ? (charset)->invalid_code \ | |
446 | : XFASTINT (charset_work))) \ | |
447 | : encode_char ((charset), (c))) \ | |
3263d5a2 KH |
448 | : encode_char ((charset), (c))) |
449 | ||
450 | ||
451 | /* Set to 1 when a charset map is loaded to warn that a buffer text | |
452 | and a string data may be relocated. */ | |
453 | extern int charset_map_loaded; | |
454 | ||
455 | ||
456 | /* Set CHARSET to the charset highest priority of C, CODE to the | |
457 | code-point of C in CHARSET. */ | |
458 | #define SPLIT_CHAR(c, charset, code) \ | |
459 | ((charset) = char_charset ((c), Qnil, &(code))) | |
460 | ||
461 | ||
462 | #define ISO_MAX_DIMENSION 3 | |
463 | #define ISO_MAX_CHARS 2 | |
464 | #define ISO_MAX_FINAL 0x80 /* only 0x30..0xFF are used */ | |
465 | ||
466 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
467 | CHARS, and FINAL_CHAR) to Emacs' charset ID. Should be accessed by | |
468 | macro ISO_CHARSET_TABLE (DIMENSION, CHARS, FINAL_CHAR). */ | |
469 | extern int iso_charset_table[ISO_MAX_DIMENSION][ISO_MAX_CHARS][ISO_MAX_FINAL]; | |
c399b461 | 470 | |
3263d5a2 KH |
471 | /* A charset of type iso2022 who has DIMENSION, CHARS, and FINAL |
472 | (final character). */ | |
473 | #define ISO_CHARSET_TABLE(dimension, chars_96, final) \ | |
474 | iso_charset_table[(dimension) - 1][(chars_96)][(final)] | |
6e4dc3e1 | 475 | |
b2e6b10f | 476 | /* Nonzero if the charset who has FAST_MAP may contain C. */ |
3263d5a2 KH |
477 | #define CHARSET_FAST_MAP_REF(c, fast_map) \ |
478 | ((c) < 0x10000 \ | |
479 | ? fast_map[(c) >> 10] & (1 << (((c) >> 7) & 7)) \ | |
480 | : fast_map[((c) >> 15) + 62] & (1 << (((c) >> 12) & 7))) | |
6e4dc3e1 | 481 | |
3263d5a2 | 482 | #define CHARSET_FAST_MAP_SET(c, fast_map) \ |
384107f2 | 483 | do { \ |
3263d5a2 KH |
484 | if ((c) < 0x10000) \ |
485 | (fast_map)[(c) >> 10] |= 1 << (((c) >> 7) & 7); \ | |
384107f2 | 486 | else \ |
3263d5a2 | 487 | (fast_map)[((c) >> 15) + 62] |= 1 << (((c) >> 12) & 7); \ |
384107f2 KH |
488 | } while (0) |
489 | ||
6e4dc3e1 | 490 | |
6e4dc3e1 | 491 | |
b2e6b10f | 492 | /* 1 if CHARSET may contain the character C. */ |
ec7dd615 KH |
493 | #define CHAR_CHARSET_P(c, charset) \ |
494 | ((ASCII_CHAR_P (c) && (charset)->ascii_compatible_p) \ | |
1c305bc1 KH |
495 | || ((CHARSET_UNIFIED_P (charset) \ |
496 | || (charset)->method == CHARSET_METHOD_SUBSET \ | |
497 | || (charset)->method == CHARSET_METHOD_SUPERSET) \ | |
ec7dd615 KH |
498 | ? encode_char ((charset), (c)) != (charset)->invalid_code \ |
499 | : (CHARSET_FAST_MAP_REF ((c), (charset)->fast_map) \ | |
500 | && ((charset)->method == CHARSET_METHOD_OFFSET \ | |
501 | ? (c) >= (charset)->min_char && (c) <= (charset)->max_char \ | |
502 | : ((charset)->method == CHARSET_METHOD_MAP \ | |
8cc53f96 KH |
503 | && (charset)->compact_codes_p \ |
504 | && CHAR_TABLE_P (CHARSET_ENCODER (charset))) \ | |
ec7dd615 | 505 | ? ! NILP (CHAR_TABLE_REF (CHARSET_ENCODER (charset), (c))) \ |
3263d5a2 | 506 | : encode_char ((charset), (c)) != (charset)->invalid_code)))) |
6e4dc3e1 | 507 | |
39d992af KH |
508 | \f |
509 | /* Special macros for emacs-mule encoding. */ | |
4ed46869 | 510 | |
39d992af KH |
511 | /* Leading-code followed by extended leading-code. DIMENSION/COLUMN */ |
512 | #define EMACS_MULE_LEADING_CODE_PRIVATE_11 0x9A /* 1/1 */ | |
513 | #define EMACS_MULE_LEADING_CODE_PRIVATE_12 0x9B /* 1/2 */ | |
514 | #define EMACS_MULE_LEADING_CODE_PRIVATE_21 0x9C /* 2/2 */ | |
515 | #define EMACS_MULE_LEADING_CODE_PRIVATE_22 0x9D /* 2/2 */ | |
516 | ||
39d992af | 517 | \f |
4ed46869 | 518 | |
3263d5a2 KH |
519 | extern Lisp_Object Qcharsetp; |
520 | ||
955cbe7b | 521 | extern Lisp_Object Qascii; |
21f9c39d | 522 | extern int charset_ascii, charset_eight_bit; |
96f45cf0 | 523 | extern int charset_unicode; |
e73576a3 KH |
524 | extern int charset_jisx0201_roman; |
525 | extern int charset_jisx0208_1978; | |
526 | extern int charset_jisx0208; | |
3c908a57 | 527 | extern int charset_ksc5601; |
3263d5a2 | 528 | |
3fd31366 KH |
529 | extern int charset_unibyte; |
530 | ||
383e0970 J |
531 | extern struct charset *char_charset (int, Lisp_Object, unsigned *); |
532 | extern Lisp_Object charset_attributes (int); | |
3263d5a2 | 533 | |
383e0970 J |
534 | extern int maybe_unify_char (int, Lisp_Object); |
535 | extern int decode_char (struct charset *, unsigned); | |
536 | extern unsigned encode_char (struct charset *, int); | |
537 | extern int string_xstring_p (Lisp_Object); | |
3263d5a2 | 538 | |
383e0970 J |
539 | extern void map_charset_chars (void (*) (Lisp_Object, Lisp_Object), |
540 | Lisp_Object, Lisp_Object, | |
541 | struct charset *, unsigned, unsigned); | |
ec7dd615 | 542 | |
aa01a892 | 543 | #endif /* EMACS_CHARSET_H */ |