Commit | Line | Data |
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75c8c592 RS |
1 | /* Basic multilingual character support. |
2 | Copyright (C) 1995, 1997 Electrotechnical Laboratory, JAPAN. | |
3 | Licensed to the Free Software Foundation. | |
4ed46869 | 4 | |
369314dc KH |
5 | This file is part of GNU Emacs. |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
4ed46869 | 11 | |
369314dc KH |
12 | GNU Emacs is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
4ed46869 | 16 | |
369314dc KH |
17 | You should have received a copy of the GNU General Public License |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
4ed46869 KH |
21 | |
22 | /* At first, see the document in `charset.h' to understand the code in | |
23 | this file. */ | |
24 | ||
25 | #include <stdio.h> | |
26 | ||
27 | #ifdef emacs | |
28 | ||
29 | #include <sys/types.h> | |
30 | #include <config.h> | |
31 | #include "lisp.h" | |
32 | #include "buffer.h" | |
33 | #include "charset.h" | |
34 | #include "coding.h" | |
fc6b09bf | 35 | #include "disptab.h" |
4ed46869 KH |
36 | |
37 | #else /* not emacs */ | |
38 | ||
39 | #include "mulelib.h" | |
40 | ||
41 | #endif /* emacs */ | |
42 | ||
43 | Lisp_Object Qcharset, Qascii, Qcomposition; | |
44 | ||
45 | /* Declaration of special leading-codes. */ | |
46 | int leading_code_composition; /* for composite characters */ | |
47 | int leading_code_private_11; /* for private DIMENSION1 of 1-column */ | |
48 | int leading_code_private_12; /* for private DIMENSION1 of 2-column */ | |
49 | int leading_code_private_21; /* for private DIMENSION2 of 1-column */ | |
50 | int leading_code_private_22; /* for private DIMENSION2 of 2-column */ | |
51 | ||
52 | /* Declaration of special charsets. */ | |
53 | int charset_ascii; /* ASCII */ | |
54 | int charset_composition; /* for a composite character */ | |
55 | int charset_latin_iso8859_1; /* ISO8859-1 (Latin-1) */ | |
56 | int charset_jisx0208_1978; /* JISX0208.1978 (Japanese Kanji old set) */ | |
57 | int charset_jisx0208; /* JISX0208.1983 (Japanese Kanji) */ | |
58 | int charset_katakana_jisx0201; /* JISX0201.Kana (Japanese Katakana) */ | |
59 | int charset_latin_jisx0201; /* JISX0201.Roman (Japanese Roman) */ | |
60 | int charset_big5_1; /* Big5 Level 1 (Chinese Traditional) */ | |
61 | int charset_big5_2; /* Big5 Level 2 (Chinese Traditional) */ | |
62 | ||
63 | Lisp_Object Qcharset_table; | |
64 | ||
65 | /* A char-table containing information of each character set. */ | |
66 | Lisp_Object Vcharset_table; | |
67 | ||
68 | /* A vector of charset symbol indexed by charset-id. This is used | |
69 | only for returning charset symbol from C functions. */ | |
70 | Lisp_Object Vcharset_symbol_table; | |
71 | ||
72 | /* A list of charset symbols ever defined. */ | |
73 | Lisp_Object Vcharset_list; | |
74 | ||
75 | /* Tables used by macros BYTES_BY_CHAR_HEAD and WIDTH_BY_CHAR_HEAD. */ | |
76 | int bytes_by_char_head[256]; | |
77 | int width_by_char_head[256]; | |
78 | ||
79 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
80 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
81 | int iso_charset_table[2][2][128]; | |
82 | ||
513ee442 KH |
83 | /* Table of pointers to the structure `cmpchar_info' indexed by |
84 | CMPCHAR-ID. */ | |
85 | struct cmpchar_info **cmpchar_table; | |
86 | /* The current size of `cmpchar_table'. */ | |
87 | static int cmpchar_table_size; | |
88 | /* Number of the current composite characters. */ | |
89 | int n_cmpchars; | |
90 | ||
4ed46869 KH |
91 | /* Variables used locally in the macro FETCH_MULTIBYTE_CHAR. */ |
92 | unsigned char *_fetch_multibyte_char_p; | |
93 | int _fetch_multibyte_char_len; | |
94 | ||
046b1f03 RS |
95 | #define min(X, Y) ((X) < (Y) ? (X) : (Y)) |
96 | #define max(X, Y) ((X) > (Y) ? (X) : (Y)) | |
97 | \f | |
4ed46869 KH |
98 | /* Set STR a pointer to the multi-byte form of the character C. If C |
99 | is not a composite character, the multi-byte form is set in WORKBUF | |
100 | and STR points WORKBUF. The caller should allocate at least 4-byte | |
101 | area at WORKBUF in advance. Returns the length of the multi-byte | |
bd4c6dd0 KH |
102 | form. If C is an invalid character to have a multi-byte form, |
103 | signal an error. | |
4ed46869 KH |
104 | |
105 | Use macro `CHAR_STRING (C, WORKBUF, STR)' instead of calling this | |
106 | function directly if C can be an ASCII character. */ | |
107 | ||
108 | int | |
109 | non_ascii_char_to_string (c, workbuf, str) | |
110 | int c; | |
111 | unsigned char *workbuf, **str; | |
112 | { | |
6dc0722d | 113 | int charset, c1, c2; |
4ed46869 KH |
114 | |
115 | if (COMPOSITE_CHAR_P (c)) | |
116 | { | |
117 | int cmpchar_id = COMPOSITE_CHAR_ID (c); | |
118 | ||
119 | if (cmpchar_id < n_cmpchars) | |
120 | { | |
121 | *str = cmpchar_table[cmpchar_id]->data; | |
122 | return cmpchar_table[cmpchar_id]->len; | |
123 | } | |
124 | else | |
125 | { | |
d16a4fc6 | 126 | error ("Invalid character: %d", c); |
4ed46869 KH |
127 | } |
128 | } | |
129 | ||
130 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); | |
bd4c6dd0 KH |
131 | if (!charset |
132 | || ! CHARSET_DEFINED_P (charset) | |
133 | || c1 >= 0 && c1 < 32 | |
134 | || c2 >= 0 && c2 < 32) | |
d16a4fc6 | 135 | error ("Invalid character: %d", c); |
4ed46869 KH |
136 | |
137 | *str = workbuf; | |
138 | *workbuf++ = CHARSET_LEADING_CODE_BASE (charset); | |
139 | if (*workbuf = CHARSET_LEADING_CODE_EXT (charset)) | |
140 | workbuf++; | |
141 | *workbuf++ = c1 | 0x80; | |
6dc0722d | 142 | if (c2 >= 0) |
4ed46869 KH |
143 | *workbuf++ = c2 | 0x80; |
144 | ||
145 | return (workbuf - *str); | |
146 | } | |
147 | ||
148 | /* Return a non-ASCII character of which multi-byte form is at STR of | |
149 | length LEN. If ACTUAL_LEN is not NULL, the actual length of the | |
150 | character is set to the address ACTUAL_LEN. | |
151 | ||
152 | Use macro `STRING_CHAR (STR, LEN)' instead of calling this function | |
153 | directly if STR can hold an ASCII character. */ | |
154 | ||
155 | string_to_non_ascii_char (str, len, actual_len) | |
156 | unsigned char *str; | |
157 | int len, *actual_len; | |
158 | { | |
159 | int charset; | |
160 | unsigned char c1, c2; | |
161 | register int c; | |
162 | ||
163 | if (SPLIT_STRING (str, len, charset, c1, c2) == CHARSET_ASCII) | |
164 | { | |
165 | if (actual_len) | |
166 | *actual_len = 1; | |
167 | return (int) *str; | |
168 | } | |
169 | ||
170 | c = MAKE_NON_ASCII_CHAR (charset, c1, c2); | |
171 | ||
172 | if (actual_len) | |
173 | *actual_len = (charset == CHARSET_COMPOSITION | |
174 | ? cmpchar_table[COMPOSITE_CHAR_ID (c)]->len | |
175 | : BYTES_BY_CHAR_HEAD (*str)); | |
176 | return c; | |
177 | } | |
178 | ||
179 | /* Return the length of the multi-byte form at string STR of length LEN. */ | |
180 | int | |
181 | multibyte_form_length (str, len) | |
182 | unsigned char *str; | |
183 | int len; | |
184 | { | |
185 | int charset; | |
186 | unsigned char c1, c2; | |
187 | register int c; | |
188 | ||
189 | if (SPLIT_STRING (str, len, charset, c1, c2) == CHARSET_ASCII) | |
190 | return 1; | |
191 | ||
192 | return (charset == CHARSET_COMPOSITION | |
193 | ? cmpchar_table[(c1 << 7) | c2]->len | |
194 | : BYTES_BY_CHAR_HEAD (*str)); | |
195 | } | |
196 | ||
197 | /* Check if string STR of length LEN contains valid multi-byte form of | |
198 | a character. If valid, charset and position codes of the character | |
199 | is set at *CHARSET, *C1, and *C2, and return 0. If not valid, | |
200 | return -1. This should be used only in the macro SPLIT_STRING | |
201 | which checks range of STR in advance. */ | |
202 | ||
203 | split_non_ascii_string (str, len, charset, c1, c2) | |
204 | register unsigned char *str, *c1, *c2; | |
205 | register int len, *charset; | |
206 | { | |
207 | register unsigned int cs = *str++; | |
208 | ||
209 | if (cs == LEADING_CODE_COMPOSITION) | |
210 | { | |
211 | int cmpchar_id = str_cmpchar_id (str - 1, len); | |
212 | ||
213 | if (cmpchar_id < 0) | |
214 | return -1; | |
215 | *charset = cs, *c1 = cmpchar_id >> 7, *c2 = cmpchar_id & 0x7F; | |
216 | } | |
217 | else if ((cs < LEADING_CODE_PRIVATE_11 || (cs = *str++) >= 0xA0) | |
218 | && CHARSET_DEFINED_P (cs)) | |
219 | { | |
220 | *charset = cs; | |
221 | if (*str < 0xA0) | |
222 | return -1; | |
223 | *c1 = (*str++) & 0x7F; | |
224 | if (CHARSET_DIMENSION (cs) == 2) | |
225 | { | |
226 | if (*str < 0xA0) | |
227 | return -1; | |
228 | *c2 = (*str++) & 0x7F; | |
229 | } | |
230 | } | |
231 | else | |
232 | return -1; | |
233 | return 0; | |
234 | } | |
235 | ||
23d2a7f1 KH |
236 | /* Return a character unified with C (or a character made of CHARSET, |
237 | C1, and C2) in unification table TABLE. If no unification is found | |
238 | in TABLE, return C. */ | |
239 | unify_char (table, c, charset, c1, c2) | |
240 | Lisp_Object table; | |
241 | int c, charset, c1, c2; | |
242 | { | |
243 | Lisp_Object ch; | |
244 | int alt_charset, alt_c1, alt_c2, dimension; | |
245 | ||
246 | if (c < 0) c = MAKE_CHAR (charset, c1, c2); | |
247 | if (!CHAR_TABLE_P (table) | |
248 | || (ch = Faref (table, make_number (c)), !INTEGERP (ch)) | |
249 | || XINT (ch) < 0) | |
250 | return c; | |
251 | ||
252 | SPLIT_CHAR (XFASTINT (ch), alt_charset, alt_c1, alt_c2); | |
253 | dimension = CHARSET_DIMENSION (alt_charset); | |
254 | if (dimension == 1 && alt_c1 > 0 || dimension == 2 && alt_c2 > 0) | |
255 | /* CH is not a generic character, just return it. */ | |
256 | return XFASTINT (ch); | |
257 | ||
258 | /* Since CH is a generic character, we must return a specific | |
259 | charater which has the same position codes as C from CH. */ | |
260 | if (charset < 0) | |
261 | SPLIT_CHAR (c, charset, c1, c2); | |
262 | if (dimension != CHARSET_DIMENSION (charset)) | |
263 | /* We can't make such a character because of dimension mismatch. */ | |
264 | return c; | |
265 | if (!alt_c1) alt_c1 = c1; | |
266 | if (!alt_c2) alt_c2 = c2; | |
267 | return MAKE_CHAR (alt_charset, c1, c2); | |
268 | } | |
269 | ||
4ed46869 KH |
270 | /* Update the table Vcharset_table with the given arguments (see the |
271 | document of `define-charset' for the meaning of each argument). | |
272 | Several other table contents are also updated. The caller should | |
273 | check the validity of CHARSET-ID and the remaining arguments in | |
274 | advance. */ | |
275 | ||
276 | void | |
277 | update_charset_table (charset_id, dimension, chars, width, direction, | |
278 | iso_final_char, iso_graphic_plane, | |
279 | short_name, long_name, description) | |
280 | Lisp_Object charset_id, dimension, chars, width, direction; | |
281 | Lisp_Object iso_final_char, iso_graphic_plane; | |
282 | Lisp_Object short_name, long_name, description; | |
283 | { | |
284 | int charset = XINT (charset_id); | |
285 | int bytes; | |
286 | unsigned char leading_code_base, leading_code_ext; | |
287 | ||
6dc0722d KH |
288 | if (NILP (CHARSET_TABLE_ENTRY (charset))) |
289 | CHARSET_TABLE_ENTRY (charset) | |
290 | = Fmake_vector (make_number (CHARSET_MAX_IDX), Qnil); | |
4ed46869 KH |
291 | |
292 | /* Get byte length of multibyte form, base leading-code, and | |
293 | extended leading-code of the charset. See the comment under the | |
294 | title "GENERAL NOTE on CHARACTER SET (CHARSET)" in charset.h. */ | |
295 | bytes = XINT (dimension); | |
296 | if (charset < MIN_CHARSET_PRIVATE_DIMENSION1) | |
297 | { | |
298 | /* Official charset, it doesn't have an extended leading-code. */ | |
299 | if (charset != CHARSET_ASCII) | |
300 | bytes += 1; /* For a base leading-code. */ | |
301 | leading_code_base = charset; | |
302 | leading_code_ext = 0; | |
303 | } | |
304 | else | |
305 | { | |
306 | /* Private charset. */ | |
307 | bytes += 2; /* For base and extended leading-codes. */ | |
308 | leading_code_base | |
309 | = (charset < LEADING_CODE_EXT_12 | |
310 | ? LEADING_CODE_PRIVATE_11 | |
311 | : (charset < LEADING_CODE_EXT_21 | |
312 | ? LEADING_CODE_PRIVATE_12 | |
313 | : (charset < LEADING_CODE_EXT_22 | |
314 | ? LEADING_CODE_PRIVATE_21 | |
315 | : LEADING_CODE_PRIVATE_22))); | |
316 | leading_code_ext = charset; | |
317 | } | |
318 | ||
319 | CHARSET_TABLE_INFO (charset, CHARSET_ID_IDX) = charset_id; | |
320 | CHARSET_TABLE_INFO (charset, CHARSET_BYTES_IDX) = make_number (bytes); | |
321 | CHARSET_TABLE_INFO (charset, CHARSET_DIMENSION_IDX) = dimension; | |
322 | CHARSET_TABLE_INFO (charset, CHARSET_CHARS_IDX) = chars; | |
323 | CHARSET_TABLE_INFO (charset, CHARSET_WIDTH_IDX) = width; | |
324 | CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX) = direction; | |
325 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_BASE_IDX) | |
326 | = make_number (leading_code_base); | |
327 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_EXT_IDX) | |
328 | = make_number (leading_code_ext); | |
329 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_FINAL_CHAR_IDX) = iso_final_char; | |
330 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_GRAPHIC_PLANE_IDX) | |
331 | = iso_graphic_plane; | |
332 | CHARSET_TABLE_INFO (charset, CHARSET_SHORT_NAME_IDX) = short_name; | |
333 | CHARSET_TABLE_INFO (charset, CHARSET_LONG_NAME_IDX) = long_name; | |
334 | CHARSET_TABLE_INFO (charset, CHARSET_DESCRIPTION_IDX) = description; | |
335 | CHARSET_TABLE_INFO (charset, CHARSET_PLIST_IDX) = Qnil; | |
336 | ||
337 | { | |
338 | /* If we have already defined a charset which has the same | |
339 | DIMENSION, CHARS and ISO-FINAL-CHAR but the different | |
340 | DIRECTION, we must update the entry REVERSE-CHARSET of both | |
341 | charsets. If there's no such charset, the value of the entry | |
342 | is set to nil. */ | |
343 | int i; | |
344 | ||
513ee442 | 345 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
346 | if (!NILP (CHARSET_TABLE_ENTRY (i))) |
347 | { | |
348 | if (CHARSET_DIMENSION (i) == XINT (dimension) | |
349 | && CHARSET_CHARS (i) == XINT (chars) | |
350 | && CHARSET_ISO_FINAL_CHAR (i) == XINT (iso_final_char) | |
351 | && CHARSET_DIRECTION (i) != XINT (direction)) | |
352 | { | |
353 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
354 | = make_number (i); | |
355 | CHARSET_TABLE_INFO (i, CHARSET_REVERSE_CHARSET_IDX) = charset_id; | |
356 | break; | |
357 | } | |
358 | } | |
513ee442 | 359 | if (i > MAX_CHARSET) |
4ed46869 KH |
360 | /* No such a charset. */ |
361 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
362 | = make_number (-1); | |
363 | } | |
364 | ||
365 | if (charset != CHARSET_ASCII | |
366 | && charset < MIN_CHARSET_PRIVATE_DIMENSION1) | |
367 | { | |
368 | /* Update tables bytes_by_char_head and width_by_char_head. */ | |
369 | bytes_by_char_head[leading_code_base] = bytes; | |
370 | width_by_char_head[leading_code_base] = XINT (width); | |
371 | ||
372 | /* Update table emacs_code_class. */ | |
373 | emacs_code_class[charset] = (bytes == 2 | |
374 | ? EMACS_leading_code_2 | |
375 | : (bytes == 3 | |
376 | ? EMACS_leading_code_3 | |
377 | : EMACS_leading_code_4)); | |
378 | } | |
379 | ||
380 | /* Update table iso_charset_table. */ | |
381 | if (ISO_CHARSET_TABLE (dimension, chars, iso_final_char) < 0) | |
382 | ISO_CHARSET_TABLE (dimension, chars, iso_final_char) = charset; | |
383 | } | |
384 | ||
385 | #ifdef emacs | |
386 | ||
387 | /* Return charset id of CHARSET_SYMBOL, or return -1 if CHARSET_SYMBOL | |
388 | is invalid. */ | |
389 | int | |
390 | get_charset_id (charset_symbol) | |
391 | Lisp_Object charset_symbol; | |
392 | { | |
393 | Lisp_Object val; | |
394 | int charset; | |
395 | ||
396 | return ((SYMBOLP (charset_symbol) | |
397 | && (val = Fget (charset_symbol, Qcharset), VECTORP (val)) | |
398 | && (charset = XINT (XVECTOR (val)->contents[CHARSET_ID_IDX]), | |
399 | CHARSET_VALID_P (charset))) | |
400 | ? charset : -1); | |
401 | } | |
402 | ||
403 | /* Return an identification number for a new private charset of | |
404 | DIMENSION and WIDTH. If there's no more room for the new charset, | |
405 | return 0. */ | |
406 | Lisp_Object | |
407 | get_new_private_charset_id (dimension, width) | |
408 | int dimension, width; | |
409 | { | |
410 | int charset, from, to; | |
411 | ||
412 | if (dimension == 1) | |
413 | { | |
414 | if (width == 1) | |
415 | from = LEADING_CODE_EXT_11, to = LEADING_CODE_EXT_12; | |
416 | else | |
417 | from = LEADING_CODE_EXT_12, to = LEADING_CODE_EXT_21; | |
418 | } | |
419 | else | |
420 | { | |
421 | if (width == 1) | |
422 | from = LEADING_CODE_EXT_21, to = LEADING_CODE_EXT_22; | |
423 | else | |
424 | from = LEADING_CODE_EXT_22, to = LEADING_CODE_EXT_MAX - 1; | |
425 | } | |
426 | ||
427 | for (charset = from; charset < to; charset++) | |
428 | if (!CHARSET_DEFINED_P (charset)) break; | |
429 | ||
430 | return make_number (charset < to ? charset : 0); | |
431 | } | |
432 | ||
433 | DEFUN ("define-charset", Fdefine_charset, Sdefine_charset, 3, 3, 0, | |
434 | "Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR.\n\ | |
23d2a7f1 | 435 | If CHARSET-ID is nil, it is decided automatically, which means CHARSET is\n\ |
4ed46869 KH |
436 | treated as a private charset.\n\ |
437 | INFO-VECTOR is a vector of the format:\n\ | |
438 | [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE\n\ | |
439 | SHORT-NAME LONG-NAME DESCRIPTION]\n\ | |
440 | The meanings of each elements is as follows:\n\ | |
441 | DIMENSION (integer) is the number of bytes to represent a character: 1 or 2.\n\ | |
442 | CHARS (integer) is the number of characters in a dimension: 94 or 96.\n\ | |
443 | WIDTH (integer) is the number of columns a character in the charset\n\ | |
444 | occupies on the screen: one of 0, 1, and 2.\n\ | |
445 | \n\ | |
446 | DIRECTION (integer) is the rendering direction of characters in the\n\ | |
447 | charset when rendering. If 0, render from right to left, else\n\ | |
448 | render from left to right.\n\ | |
449 | \n\ | |
450 | ISO-FINAL-CHAR (character) is the final character of the\n\ | |
451 | corresponding ISO 2022 charset.\n\ | |
452 | \n\ | |
453 | ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked\n\ | |
454 | while encoding to variants of ISO 2022 coding system, one of the\n\ | |
455 | following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).\n\ | |
456 | \n\ | |
457 | SHORT-NAME (string) is the short name to refer to the charset.\n\ | |
458 | \n\ | |
459 | LONG-NAME (string) is the long name to refer to the charset.\n\ | |
460 | \n\ | |
461 | DESCRIPTION (string) is the description string of the charset.") | |
462 | (charset_id, charset_symbol, info_vector) | |
463 | Lisp_Object charset_id, charset_symbol, info_vector; | |
464 | { | |
465 | Lisp_Object *vec; | |
466 | ||
467 | if (!NILP (charset_id)) | |
468 | CHECK_NUMBER (charset_id, 0); | |
469 | CHECK_SYMBOL (charset_symbol, 1); | |
470 | CHECK_VECTOR (info_vector, 2); | |
471 | ||
472 | if (! NILP (charset_id)) | |
473 | { | |
474 | if (! CHARSET_VALID_P (XINT (charset_id))) | |
475 | error ("Invalid CHARSET: %d", XINT (charset_id)); | |
476 | else if (CHARSET_DEFINED_P (XINT (charset_id))) | |
477 | error ("Already defined charset: %d", XINT (charset_id)); | |
478 | } | |
479 | ||
480 | vec = XVECTOR (info_vector)->contents; | |
481 | if (XVECTOR (info_vector)->size != 9 | |
482 | || !INTEGERP (vec[0]) || !(XINT (vec[0]) == 1 || XINT (vec[0]) == 2) | |
483 | || !INTEGERP (vec[1]) || !(XINT (vec[1]) == 94 || XINT (vec[1]) == 96) | |
484 | || !INTEGERP (vec[2]) || !(XINT (vec[2]) == 1 || XINT (vec[2]) == 2) | |
485 | || !INTEGERP (vec[3]) || !(XINT (vec[3]) == 0 || XINT (vec[3]) == 1) | |
486 | || !INTEGERP (vec[4]) || !(XINT (vec[4]) >= '0' && XINT (vec[4]) <= '~') | |
487 | || !INTEGERP (vec[5]) || !(XINT (vec[5]) == 0 || XINT (vec[5]) == 1) | |
488 | || !STRINGP (vec[6]) | |
489 | || !STRINGP (vec[7]) | |
490 | || !STRINGP (vec[8])) | |
491 | error ("Invalid info-vector argument for defining charset %s", | |
492 | XSYMBOL (charset_symbol)->name->data); | |
493 | ||
494 | if (NILP (charset_id)) | |
495 | { | |
496 | charset_id = get_new_private_charset_id (XINT (vec[0]), XINT (vec[2])); | |
497 | if (XINT (charset_id) == 0) | |
498 | error ("There's no room for a new private charset %s", | |
499 | XSYMBOL (charset_symbol)->name->data); | |
500 | } | |
501 | ||
502 | update_charset_table (charset_id, vec[0], vec[1], vec[2], vec[3], | |
503 | vec[4], vec[5], vec[6], vec[7], vec[8]); | |
6dc0722d | 504 | Fput (charset_symbol, Qcharset, CHARSET_TABLE_ENTRY (XINT (charset_id))); |
4ed46869 KH |
505 | CHARSET_SYMBOL (XINT (charset_id)) = charset_symbol; |
506 | Vcharset_list = Fcons (charset_symbol, Vcharset_list); | |
507 | return Qnil; | |
508 | } | |
509 | ||
510 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, | |
511 | 4, 4, 0, | |
512 | "Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.\n\ | |
513 | CHARSET should be defined by `defined-charset' in advance.") | |
514 | (dimension, chars, final_char, charset_symbol) | |
515 | Lisp_Object dimension, chars, final_char, charset_symbol; | |
516 | { | |
517 | int charset; | |
518 | ||
519 | CHECK_NUMBER (dimension, 0); | |
520 | CHECK_NUMBER (chars, 1); | |
521 | CHECK_NUMBER (final_char, 2); | |
522 | CHECK_SYMBOL (charset_symbol, 3); | |
523 | ||
524 | if (XINT (dimension) != 1 && XINT (dimension) != 2) | |
525 | error ("Invalid DIMENSION %d, it should be 1 or 2", XINT (dimension)); | |
526 | if (XINT (chars) != 94 && XINT (chars) != 96) | |
527 | error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars)); | |
528 | if (XINT (final_char) < '0' || XFASTINT (final_char) > '~') | |
529 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars)); | |
530 | if ((charset = get_charset_id (charset_symbol)) < 0) | |
531 | error ("Invalid charset %s", XSYMBOL (charset_symbol)->name->data); | |
532 | ||
533 | ISO_CHARSET_TABLE (dimension, chars, final_char) = charset; | |
534 | return Qnil; | |
535 | } | |
536 | ||
537 | /* Return number of different charsets in STR of length LEN. In | |
538 | addition, for each found charset N, CHARSETS[N] is set 1. The | |
a29e3b1b | 539 | caller should allocate CHARSETS (MAX_CHARSET + 1 elements) in advance. |
23d2a7f1 | 540 | It may lookup a unification table TABLE if supplied. */ |
4ed46869 KH |
541 | |
542 | int | |
23d2a7f1 | 543 | find_charset_in_str (str, len, charsets, table) |
028d516b KH |
544 | unsigned char *str; |
545 | int len, *charsets; | |
23d2a7f1 | 546 | Lisp_Object table; |
4ed46869 | 547 | { |
733eafd8 | 548 | register int num = 0, c; |
4ed46869 | 549 | |
23d2a7f1 KH |
550 | if (! CHAR_TABLE_P (table)) |
551 | table = Qnil; | |
552 | ||
4ed46869 KH |
553 | while (len > 0) |
554 | { | |
05505664 | 555 | int bytes, charset; |
733eafd8 | 556 | c = *str; |
23d2a7f1 | 557 | |
733eafd8 | 558 | if (c == LEADING_CODE_COMPOSITION) |
05505664 | 559 | { |
733eafd8 KH |
560 | int cmpchar_id = str_cmpchar_id (str, len); |
561 | GLYPH *glyph; | |
05505664 | 562 | |
733eafd8 | 563 | if (cmpchar_id > 0) |
05505664 | 564 | { |
733eafd8 KH |
565 | struct cmpchar_info *cmpcharp = cmpchar_table[cmpchar_id]; |
566 | int i; | |
567 | ||
568 | for (i = 0; i < cmpcharp->glyph_len; i++) | |
569 | { | |
570 | c = cmpcharp->glyph[i]; | |
571 | if (!NILP (table)) | |
572 | { | |
573 | if ((c = unify_char (table, c, 0, 0, 0)) < 0) | |
574 | c = cmpcharp->glyph[i]; | |
575 | } | |
576 | if ((charset = CHAR_CHARSET (c)) < 0) | |
577 | charset = CHARSET_ASCII; | |
578 | if (!charsets[charset]) | |
579 | { | |
580 | charsets[charset] = 1; | |
581 | num += 1; | |
582 | } | |
583 | } | |
584 | str += cmpcharp->len; | |
585 | len -= cmpcharp->len; | |
586 | continue; | |
05505664 | 587 | } |
05505664 | 588 | |
733eafd8 KH |
589 | charset = CHARSET_ASCII; |
590 | bytes = 1; | |
591 | } | |
23d2a7f1 KH |
592 | else |
593 | { | |
733eafd8 KH |
594 | c = STRING_CHAR_AND_LENGTH (str, len, bytes); |
595 | if (! NILP (table)) | |
596 | { | |
597 | int c1 = unify_char (table, c, 0, 0, 0); | |
598 | if (c1 >= 0) | |
599 | c = c1; | |
600 | } | |
601 | charset = CHAR_CHARSET (c); | |
23d2a7f1 | 602 | } |
4ed46869 KH |
603 | |
604 | if (!charsets[charset]) | |
605 | { | |
606 | charsets[charset] = 1; | |
607 | num += 1; | |
608 | } | |
609 | str += bytes; | |
610 | len -= bytes; | |
611 | } | |
612 | return num; | |
613 | } | |
614 | ||
615 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, | |
23d2a7f1 | 616 | 2, 3, 0, |
4ed46869 | 617 | "Return a list of charsets in the region between BEG and END.\n\ |
23d2a7f1 KH |
618 | BEG and END are buffer positions.\n\ |
619 | Optional arg TABLE if non-nil is a unification table to look up.") | |
620 | (beg, end, table) | |
621 | Lisp_Object beg, end, table; | |
4ed46869 | 622 | { |
028d516b | 623 | int charsets[MAX_CHARSET + 1]; |
4ed46869 KH |
624 | int from, to, stop, i; |
625 | Lisp_Object val; | |
626 | ||
627 | validate_region (&beg, &end); | |
628 | from = XFASTINT (beg); | |
629 | stop = to = XFASTINT (end); | |
630 | if (from < GPT && GPT < to) | |
631 | stop = GPT; | |
028d516b | 632 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
4ed46869 KH |
633 | while (1) |
634 | { | |
23d2a7f1 | 635 | find_charset_in_str (POS_ADDR (from), stop - from, charsets, table); |
4ed46869 KH |
636 | if (stop < to) |
637 | from = stop, stop = to; | |
638 | else | |
639 | break; | |
640 | } | |
641 | val = Qnil; | |
513ee442 | 642 | for (i = MAX_CHARSET; i >= 0; i--) |
4ed46869 KH |
643 | if (charsets[i]) |
644 | val = Fcons (CHARSET_SYMBOL (i), val); | |
645 | return val; | |
646 | } | |
647 | ||
648 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, | |
23d2a7f1 KH |
649 | 1, 2, 0, |
650 | "Return a list of charsets in STR.\n\ | |
651 | Optional arg TABLE if non-nil is a unification table to look up.") | |
652 | (str, table) | |
653 | Lisp_Object str, table; | |
4ed46869 | 654 | { |
a29e3b1b | 655 | int charsets[MAX_CHARSET + 1]; |
4ed46869 KH |
656 | int i; |
657 | Lisp_Object val; | |
658 | ||
659 | CHECK_STRING (str, 0); | |
a29e3b1b | 660 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
23d2a7f1 KH |
661 | find_charset_in_str (XSTRING (str)->data, XSTRING (str)->size, |
662 | charsets, table); | |
4ed46869 | 663 | val = Qnil; |
513ee442 | 664 | for (i = MAX_CHARSET; i >= 0; i--) |
4ed46869 KH |
665 | if (charsets[i]) |
666 | val = Fcons (CHARSET_SYMBOL (i), val); | |
667 | return val; | |
668 | } | |
669 | \f | |
670 | DEFUN ("make-char-internal", Fmake_char_internal, Smake_char_internal, 1, 3, 0, | |
513ee442 | 671 | "") |
4ed46869 KH |
672 | (charset, code1, code2) |
673 | Lisp_Object charset, code1, code2; | |
674 | { | |
675 | CHECK_NUMBER (charset, 0); | |
676 | ||
677 | if (NILP (code1)) | |
678 | XSETFASTINT (code1, 0); | |
679 | else | |
680 | CHECK_NUMBER (code1, 1); | |
681 | if (NILP (code2)) | |
682 | XSETFASTINT (code2, 0); | |
683 | else | |
684 | CHECK_NUMBER (code2, 2); | |
685 | ||
686 | if (!CHARSET_DEFINED_P (XINT (charset))) | |
687 | error ("Invalid charset: %d", XINT (charset)); | |
688 | ||
689 | return make_number (MAKE_CHAR (XINT (charset), XINT (code1), XINT (code2))); | |
690 | } | |
691 | ||
692 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, | |
693 | "Return list of charset and one or two position-codes of CHAR.") | |
694 | (ch) | |
695 | Lisp_Object ch; | |
696 | { | |
697 | Lisp_Object val; | |
6dc0722d | 698 | int charset, c1, c2; |
4ed46869 KH |
699 | |
700 | CHECK_NUMBER (ch, 0); | |
701 | SPLIT_CHAR (XFASTINT (ch), charset, c1, c2); | |
6dc0722d | 702 | return (c2 >= 0 |
4ed46869 KH |
703 | ? Fcons (CHARSET_SYMBOL (charset), |
704 | Fcons (make_number (c1), Fcons (make_number (c2), Qnil))) | |
705 | : Fcons (CHARSET_SYMBOL (charset), Fcons (make_number (c1), Qnil))); | |
706 | } | |
707 | ||
708 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0, | |
709 | "Return charset of CHAR.") | |
710 | (ch) | |
711 | Lisp_Object ch; | |
712 | { | |
713 | CHECK_NUMBER (ch, 0); | |
714 | ||
715 | return CHARSET_SYMBOL (CHAR_CHARSET (XINT (ch))); | |
716 | } | |
717 | ||
718 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, | |
719 | "Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.") | |
720 | (dimension, chars, final_char) | |
721 | Lisp_Object dimension, chars, final_char; | |
722 | { | |
723 | int charset; | |
724 | ||
725 | CHECK_NUMBER (dimension, 0); | |
726 | CHECK_NUMBER (chars, 1); | |
727 | CHECK_NUMBER (final_char, 2); | |
728 | ||
729 | if ((charset = ISO_CHARSET_TABLE (dimension, chars, final_char)) < 0) | |
730 | return Qnil; | |
731 | return CHARSET_SYMBOL (charset); | |
732 | } | |
733 | ||
9d3d8cba KH |
734 | /* If GENERICP is nonzero, return nonzero iff C is a valid normal or |
735 | generic character. If GENERICP is zero, return nonzero iff C is a | |
736 | valid normal character. Do not call this function directly, | |
737 | instead use macro CHAR_VALID_P. */ | |
738 | int | |
739 | char_valid_p (c, genericp) | |
740 | int c, genericp; | |
741 | { | |
742 | int charset, c1, c2; | |
743 | ||
744 | if (c < 0) | |
745 | return 0; | |
746 | if (SINGLE_BYTE_CHAR_P (c)) | |
747 | return 1; | |
748 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); | |
749 | if (!CHARSET_VALID_P (charset)) | |
750 | return 0; | |
751 | return (c < MIN_CHAR_COMPOSITION | |
752 | ? ((c & CHAR_FIELD1_MASK) /* i.e. dimension of C is two. */ | |
753 | ? (genericp && c1 == 0 && c2 == 0 | |
754 | || c1 >= 32 && c2 >= 32) | |
755 | : (genericp && c1 == 0 | |
756 | || c1 >= 32)) | |
757 | : c < MIN_CHAR_COMPOSITION + n_cmpchars); | |
758 | } | |
759 | ||
760 | DEFUN ("char-valid-p", Fchar_valid_p, Schar_valid_p, 1, 2, 0, | |
761 | "Return t if OBJECT is a valid normal character. | |
762 | If optional arg GENERICP is non-nil, also return t if OBJECT is | |
763 | a valid generic character.") | |
764 | (object, genericp) | |
765 | Lisp_Object object, genericp; | |
766 | { | |
767 | if (! NATNUMP (object)) | |
768 | return Qnil; | |
769 | return (CHAR_VALID_P (XFASTINT (object), !NILP (genericp)) ? Qt : Qnil); | |
770 | } | |
771 | ||
4ed46869 KH |
772 | DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0, |
773 | "Return byte length of multi-byte form of CHAR.") | |
774 | (ch) | |
775 | Lisp_Object ch; | |
776 | { | |
777 | Lisp_Object val; | |
778 | int bytes; | |
779 | ||
780 | CHECK_NUMBER (ch, 0); | |
781 | if (COMPOSITE_CHAR_P (XFASTINT (ch))) | |
782 | { | |
783 | unsigned int id = COMPOSITE_CHAR_ID (XFASTINT (ch)); | |
784 | ||
785 | bytes = (id < n_cmpchars ? cmpchar_table[id]->len : 1); | |
786 | } | |
787 | else | |
788 | { | |
789 | int charset = CHAR_CHARSET (XFASTINT (ch)); | |
790 | ||
791 | bytes = CHARSET_DEFINED_P (charset) ? CHARSET_BYTES (charset) : 1; | |
792 | } | |
793 | ||
794 | XSETFASTINT (val, bytes); | |
795 | return val; | |
796 | } | |
797 | ||
798 | /* Return the width of character of which multi-byte form starts with | |
799 | C. The width is measured by how many columns occupied on the | |
800 | screen when displayed in the current buffer. */ | |
801 | ||
802 | #define ONE_BYTE_CHAR_WIDTH(c) \ | |
803 | (c < 0x20 \ | |
804 | ? (c == '\t' \ | |
53316e55 | 805 | ? XFASTINT (current_buffer->tab_width) \ |
4ed46869 KH |
806 | : (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2))) \ |
807 | : (c < 0x7f \ | |
808 | ? 1 \ | |
809 | : (c == 0x7F \ | |
810 | ? (NILP (current_buffer->ctl_arrow) ? 4 : 2) \ | |
811 | : ((! NILP (current_buffer->enable_multibyte_characters) \ | |
812 | && BASE_LEADING_CODE_P (c)) \ | |
813 | ? WIDTH_BY_CHAR_HEAD (c) \ | |
814 | : 4)))) \ | |
815 | ||
816 | ||
817 | DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0, | |
818 | "Return width of CHAR when displayed in the current buffer.\n\ | |
819 | The width is measured by how many columns it occupies on the screen.") | |
820 | (ch) | |
821 | Lisp_Object ch; | |
822 | { | |
859f2b3c | 823 | Lisp_Object val, disp; |
4ed46869 | 824 | int c; |
51c4025f | 825 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 KH |
826 | |
827 | CHECK_NUMBER (ch, 0); | |
828 | ||
859f2b3c RS |
829 | c = XINT (ch); |
830 | ||
831 | /* Get the way the display table would display it. */ | |
51c4025f | 832 | disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil; |
859f2b3c RS |
833 | |
834 | if (VECTORP (disp)) | |
835 | XSETINT (val, XVECTOR (disp)->size); | |
836 | else if (SINGLE_BYTE_CHAR_P (c)) | |
837 | XSETINT (val, ONE_BYTE_CHAR_WIDTH (c)); | |
4ed46869 KH |
838 | else if (COMPOSITE_CHAR_P (c)) |
839 | { | |
840 | int id = COMPOSITE_CHAR_ID (XFASTINT (ch)); | |
841 | XSETFASTINT (val, (id < n_cmpchars ? cmpchar_table[id]->width : 0)); | |
842 | } | |
843 | else | |
844 | { | |
845 | int charset = CHAR_CHARSET (c); | |
846 | ||
847 | XSETFASTINT (val, CHARSET_WIDTH (charset)); | |
848 | } | |
849 | return val; | |
850 | } | |
851 | ||
852 | /* Return width of string STR of length LEN when displayed in the | |
853 | current buffer. The width is measured by how many columns it | |
854 | occupies on the screen. */ | |
859f2b3c | 855 | |
4ed46869 KH |
856 | int |
857 | strwidth (str, len) | |
858 | unsigned char *str; | |
859 | int len; | |
860 | { | |
861 | unsigned char *endp = str + len; | |
862 | int width = 0; | |
c4a4e28f | 863 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 | 864 | |
859f2b3c RS |
865 | while (str < endp) |
866 | { | |
867 | if (*str == LEADING_CODE_COMPOSITION) | |
868 | { | |
869 | int id = str_cmpchar_id (str, endp - str); | |
870 | ||
871 | if (id < 0) | |
872 | { | |
873 | width += 4; | |
874 | str++; | |
875 | } | |
876 | else | |
877 | { | |
878 | width += cmpchar_table[id]->width; | |
879 | str += cmpchar_table[id]->len; | |
880 | } | |
881 | } | |
882 | else | |
883 | { | |
884 | Lisp_Object disp; | |
885 | int thiswidth; | |
886 | int c = STRING_CHAR (str, endp - str); | |
887 | ||
888 | /* Get the way the display table would display it. */ | |
acc35c36 RS |
889 | if (dp) |
890 | disp = DISP_CHAR_VECTOR (dp, c); | |
891 | else | |
892 | disp = Qnil; | |
859f2b3c RS |
893 | |
894 | if (VECTORP (disp)) | |
895 | thiswidth = XVECTOR (disp)->size; | |
896 | else | |
897 | thiswidth = ONE_BYTE_CHAR_WIDTH (*str); | |
898 | ||
899 | width += thiswidth; | |
900 | str += BYTES_BY_CHAR_HEAD (*str); | |
901 | } | |
902 | } | |
4ed46869 KH |
903 | return width; |
904 | } | |
905 | ||
906 | DEFUN ("string-width", Fstring_width, Sstring_width, 1, 1, 0, | |
907 | "Return width of STRING when displayed in the current buffer.\n\ | |
908 | Width is measured by how many columns it occupies on the screen.\n\ | |
046b1f03 RS |
909 | When calculating width of a multibyte character in STRING,\n\ |
910 | only the base leading-code is considered; the validity of\n\ | |
911 | the following bytes is not checked.") | |
4ed46869 KH |
912 | (str) |
913 | Lisp_Object str; | |
914 | { | |
915 | Lisp_Object val; | |
916 | ||
917 | CHECK_STRING (str, 0); | |
918 | XSETFASTINT (val, strwidth (XSTRING (str)->data, XSTRING (str)->size)); | |
919 | return val; | |
920 | } | |
921 | ||
922 | DEFUN ("char-direction", Fchar_direction, Schar_direction, 1, 1, 0, | |
923 | "Return the direction of CHAR.\n\ | |
924 | The returned value is 0 for left-to-right and 1 for right-to-left.") | |
925 | (ch) | |
926 | Lisp_Object ch; | |
927 | { | |
928 | int charset; | |
929 | ||
930 | CHECK_NUMBER (ch, 0); | |
931 | charset = CHAR_CHARSET (XFASTINT (ch)); | |
932 | if (!CHARSET_DEFINED_P (charset)) | |
933 | error ("Invalid character: %d", XINT (ch)); | |
934 | return CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX); | |
935 | } | |
936 | ||
937 | DEFUN ("chars-in-string", Fchars_in_string, Schars_in_string, 1, 1, 0, | |
046b1f03 RS |
938 | "Return number of characters in STRING.\n\ |
939 | When using multibyte characters, this is not the necessarily same as\n\ | |
940 | the length of STRING; the length counts a multibyte characters as\n\ | |
941 | several bytes, but this function counts a multibyte character as one\n\ | |
942 | character.") | |
4ed46869 KH |
943 | (str) |
944 | Lisp_Object str; | |
945 | { | |
946 | Lisp_Object val; | |
947 | unsigned char *p, *endp; | |
948 | int chars; | |
949 | ||
950 | CHECK_STRING (str, 0); | |
951 | ||
9036eb45 KH |
952 | if (NILP (current_buffer->enable_multibyte_characters)) |
953 | return make_number (XSTRING (str)->size); | |
954 | ||
4ed46869 KH |
955 | p = XSTRING (str)->data; endp = p + XSTRING (str)->size; |
956 | chars = 0; | |
957 | while (p < endp) | |
958 | { | |
959 | if (*p == LEADING_CODE_COMPOSITION) | |
960 | { | |
961 | p++; | |
962 | while (p < endp && ! CHAR_HEAD_P (p)) p++; | |
963 | } | |
964 | else | |
965 | p += BYTES_BY_CHAR_HEAD (*p); | |
966 | chars++; | |
967 | } | |
968 | ||
969 | XSETFASTINT (val, chars); | |
970 | return val; | |
971 | } | |
972 | ||
af4fecb4 | 973 | DEFUN ("chars-in-region", Fchars_in_region, Schars_in_region, 2, 2, 0, |
046b1f03 | 974 | "Return number of characters between BEG and END.\n\ |
a8a35e61 RS |
975 | When using multibyte characters, this is not the necessarily same\n\ |
976 | as (- END BEG); that subtraction gives you the number of bytes, which\n\ | |
046b1f03 RS |
977 | may be more than the number of characters.") |
978 | (beg, end) | |
979 | Lisp_Object beg, end; | |
980 | { | |
981 | int from, to, stop; | |
982 | Lisp_Object val; | |
983 | int chars = 0; | |
984 | unsigned char *p, *endp; | |
985 | ||
986 | validate_region (&beg, &end); | |
987 | ||
988 | from = min (XFASTINT (beg), XFASTINT (end)); | |
a8a35e61 | 989 | to = max (XFASTINT (beg), XFASTINT (end)); |
046b1f03 | 990 | p = POS_ADDR (from); |
046b1f03 | 991 | |
9036eb45 KH |
992 | if (NILP (current_buffer->enable_multibyte_characters)) |
993 | return make_number (to - from); | |
994 | ||
a8a35e61 RS |
995 | if (from < GPT && GPT <= to) |
996 | { | |
997 | stop = GPT; | |
998 | endp = GPT_ADDR; | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | stop = to; | |
1003 | endp = POS_ADDR (stop); | |
1004 | } | |
046b1f03 RS |
1005 | |
1006 | while (1) | |
1007 | { | |
9036eb45 | 1008 | if (p >= endp) |
046b1f03 | 1009 | { |
9036eb45 | 1010 | if (stop >= to) |
046b1f03 | 1011 | break; |
a8a35e61 RS |
1012 | |
1013 | p = POS_ADDR (stop); | |
1014 | stop = to; | |
1015 | endp = POS_ADDR (stop); | |
046b1f03 RS |
1016 | } |
1017 | ||
1018 | if (*p == LEADING_CODE_COMPOSITION) | |
1019 | { | |
1020 | p++; | |
1021 | while (p < endp && ! CHAR_HEAD_P (p)) p++; | |
1022 | } | |
1023 | else | |
1024 | p += BYTES_BY_CHAR_HEAD (*p); | |
1025 | ||
1026 | chars++; | |
1027 | } | |
1028 | ||
1029 | return make_number (chars); | |
1030 | } | |
1031 | ||
4ed46869 KH |
1032 | DEFUN ("char-boundary-p", Fchar_boundary_p, Schar_boundary_p, 1, 1, 0, |
1033 | "Return non-nil value if POS is at character boundary of multibyte form.\n\ | |
046b1f03 | 1034 | When the value is non-nil, it contains some additional information:\n\ |
4ed46869 | 1035 | 0 if POS is at an ASCII character or at the end of range,\n\ |
046b1f03 RS |
1036 | 1 if POS is before a 2-byte length multi-byte form,\n\ |
1037 | 2 if POS is before a 3-byte length multi-byte form,\n\ | |
1038 | 3 if POS is before a 4-byte length multi-byte form,\n\ | |
1039 | 4 if POS is before a composite character.\n\ | |
4ed46869 KH |
1040 | If POS is out of range or not at character boundary, return NIL.") |
1041 | (pos) | |
1042 | Lisp_Object pos; | |
1043 | { | |
1044 | Lisp_Object val; | |
1045 | int n; | |
1046 | ||
1047 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
1048 | ||
1049 | n = XINT (pos); | |
1050 | if (n < BEGV || n > ZV) | |
1051 | return Qnil; | |
1052 | ||
1053 | if (n == ZV || NILP (current_buffer->enable_multibyte_characters)) | |
1054 | XSETFASTINT (val, 0); | |
1055 | else | |
1056 | { | |
1057 | unsigned char *p = POS_ADDR (n); | |
1058 | ||
1059 | if (SINGLE_BYTE_CHAR_P (*p)) | |
1060 | XSETFASTINT (val, 0); | |
1061 | else if (*p == LEADING_CODE_COMPOSITION) | |
1062 | XSETFASTINT (val, 4); | |
1063 | else if (BYTES_BY_CHAR_HEAD (*p) > 1) | |
1064 | XSETFASTINT (val, BYTES_BY_CHAR_HEAD (*p) - 1); | |
1065 | else | |
1066 | val = Qnil; | |
1067 | } | |
1068 | return val; | |
1069 | } | |
1070 | ||
1071 | DEFUN ("concat-chars", Fconcat_chars, Sconcat_chars, 1, MANY, 0, | |
1072 | "Concatenate all the argument characters and make the result a string.") | |
53316e55 KH |
1073 | (n, args) |
1074 | int n; | |
4ed46869 KH |
1075 | Lisp_Object *args; |
1076 | { | |
53316e55 | 1077 | int i; |
4ed46869 | 1078 | unsigned char *buf |
bd4c6dd0 | 1079 | = (unsigned char *) alloca (MAX_LENGTH_OF_MULTI_BYTE_FORM * n); |
4ed46869 KH |
1080 | unsigned char *p = buf; |
1081 | Lisp_Object val; | |
1082 | ||
1083 | for (i = 0; i < n; i++) | |
1084 | { | |
1085 | int c, len; | |
1086 | unsigned char *str; | |
1087 | ||
1088 | if (!INTEGERP (args[i])) | |
1089 | { | |
1090 | free (buf); | |
1091 | CHECK_NUMBER (args[i], 0); | |
1092 | } | |
1093 | c = XINT (args[i]); | |
1094 | len = CHAR_STRING (c, p, str); | |
1095 | if (p != str) | |
1096 | /* C is a composite character. */ | |
1097 | bcopy (str, p, len); | |
1098 | p += len; | |
1099 | } | |
1100 | ||
1101 | val = make_string (buf, p - buf); | |
4ed46869 KH |
1102 | return val; |
1103 | } | |
1104 | ||
1105 | #endif /* emacs */ | |
1106 | \f | |
1107 | /*** Composite characters staffs ***/ | |
1108 | ||
1109 | /* Each composite character is identified by CMPCHAR-ID which is | |
1110 | assigned when Emacs needs the character code of the composite | |
1111 | character (e.g. when displaying it on the screen). See the | |
1112 | document "GENERAL NOTE on COMPOSITE CHARACTER" in `charset.h' how a | |
1113 | composite character is represented in Emacs. */ | |
1114 | ||
1115 | /* If `static' is defined, it means that it is defined to null string. */ | |
1116 | #ifndef static | |
1117 | /* The following function is copied from lread.c. */ | |
1118 | static int | |
1119 | hash_string (ptr, len) | |
1120 | unsigned char *ptr; | |
1121 | int len; | |
1122 | { | |
1123 | register unsigned char *p = ptr; | |
1124 | register unsigned char *end = p + len; | |
1125 | register unsigned char c; | |
1126 | register int hash = 0; | |
1127 | ||
1128 | while (p != end) | |
1129 | { | |
1130 | c = *p++; | |
1131 | if (c >= 0140) c -= 40; | |
1132 | hash = ((hash<<3) + (hash>>28) + c); | |
1133 | } | |
1134 | return hash & 07777777777; | |
1135 | } | |
1136 | #endif | |
1137 | ||
4ed46869 KH |
1138 | #define CMPCHAR_HASH_TABLE_SIZE 0xFFF |
1139 | ||
1140 | static int *cmpchar_hash_table[CMPCHAR_HASH_TABLE_SIZE]; | |
1141 | ||
1142 | /* Each element of `cmpchar_hash_table' is a pointer to an array of | |
1143 | integer, where the 1st element is the size of the array, the 2nd | |
1144 | element is how many elements are actually used in the array, and | |
1145 | the remaining elements are CMPCHAR-IDs of composite characters of | |
1146 | the same hash value. */ | |
1147 | #define CMPCHAR_HASH_SIZE(table) table[0] | |
1148 | #define CMPCHAR_HASH_USED(table) table[1] | |
1149 | #define CMPCHAR_HASH_CMPCHAR_ID(table, i) table[i] | |
1150 | ||
1151 | /* Return CMPCHAR-ID of the composite character in STR of the length | |
1152 | LEN. If the composite character has not yet been registered, | |
1153 | register it in `cmpchar_table' and assign new CMPCHAR-ID. This | |
1154 | is the sole function for assigning CMPCHAR-ID. */ | |
1155 | int | |
1156 | str_cmpchar_id (str, len) | |
1157 | unsigned char *str; | |
1158 | int len; | |
1159 | { | |
1160 | int hash_idx, *hashp; | |
1161 | unsigned char *buf; | |
1162 | int embedded_rule; /* 1 if composition rule is embedded. */ | |
1163 | int chars; /* number of components. */ | |
1164 | int i; | |
1165 | struct cmpchar_info *cmpcharp; | |
1166 | ||
1167 | if (len < 5) | |
1168 | /* Any composite char have at least 3-byte length. */ | |
1169 | return -1; | |
1170 | ||
1171 | /* The second byte 0xFF means compostion rule is embedded. */ | |
1172 | embedded_rule = (str[1] == 0xFF); | |
1173 | ||
1174 | /* At first, get the actual length of the composite character. */ | |
1175 | { | |
1176 | unsigned char *p, *endp = str + 1, *lastp = str + len; | |
1177 | int bytes; | |
1178 | ||
1179 | while (endp < lastp && ! CHAR_HEAD_P (endp)) endp++; | |
1180 | chars = 0; | |
1181 | p = str + 1 + embedded_rule; | |
1182 | while (p < endp) | |
1183 | { | |
1184 | /* No need of checking if *P is 0xA0 because | |
1185 | BYTES_BY_CHAR_HEAD (0x80) surely returns 2. */ | |
1186 | p += (bytes = BYTES_BY_CHAR_HEAD (*p - 0x20) + embedded_rule); | |
1187 | chars++; | |
1188 | } | |
1189 | len = (p -= embedded_rule) - str; | |
1190 | if (p > endp) | |
1191 | len -= - bytes, chars--; | |
1192 | ||
1193 | if (chars < 2 || chars > MAX_COMPONENT_COUNT) | |
1194 | /* Invalid number of components. */ | |
1195 | return -1; | |
1196 | } | |
1197 | hash_idx = hash_string (str, len) % CMPCHAR_HASH_TABLE_SIZE; | |
1198 | hashp = cmpchar_hash_table[hash_idx]; | |
1199 | ||
1200 | /* Then, look into the hash table. */ | |
1201 | if (hashp != NULL) | |
1202 | /* Find the correct one among composite characters of the same | |
1203 | hash value. */ | |
1204 | for (i = 2; i < CMPCHAR_HASH_USED (hashp); i++) | |
1205 | { | |
1206 | cmpcharp = cmpchar_table[CMPCHAR_HASH_CMPCHAR_ID (hashp, i)]; | |
1207 | if (len == cmpcharp->len | |
1208 | && ! bcmp (str, cmpcharp->data, len)) | |
1209 | return CMPCHAR_HASH_CMPCHAR_ID (hashp, i); | |
1210 | } | |
1211 | ||
1212 | /* We have to register the composite character in cmpchar_table. */ | |
513ee442 KH |
1213 | if (n_cmpchars > (CHAR_FIELD2_MASK | CHAR_FIELD3_MASK)) |
1214 | /* No, we have no more room for a new composite character. */ | |
1215 | return -1; | |
1216 | ||
4ed46869 KH |
1217 | /* Make the entry in hash table. */ |
1218 | if (hashp == NULL) | |
1219 | { | |
1220 | /* Make a table for 8 composite characters initially. */ | |
1221 | hashp = (cmpchar_hash_table[hash_idx] | |
1222 | = (int *) xmalloc (sizeof (int) * (2 + 8))); | |
1223 | CMPCHAR_HASH_SIZE (hashp) = 10; | |
1224 | CMPCHAR_HASH_USED (hashp) = 2; | |
1225 | } | |
1226 | else if (CMPCHAR_HASH_USED (hashp) >= CMPCHAR_HASH_SIZE (hashp)) | |
1227 | { | |
1228 | CMPCHAR_HASH_SIZE (hashp) += 8; | |
1229 | hashp = (cmpchar_hash_table[hash_idx] | |
1230 | = (int *) xrealloc (hashp, | |
1231 | sizeof (int) * CMPCHAR_HASH_SIZE (hashp))); | |
1232 | } | |
1233 | CMPCHAR_HASH_CMPCHAR_ID (hashp, CMPCHAR_HASH_USED (hashp)) = n_cmpchars; | |
1234 | CMPCHAR_HASH_USED (hashp)++; | |
1235 | ||
1236 | /* Set information of the composite character in cmpchar_table. */ | |
1237 | if (cmpchar_table_size == 0) | |
1238 | { | |
1239 | /* This is the first composite character to be registered. */ | |
1240 | cmpchar_table_size = 256; | |
1241 | cmpchar_table | |
1242 | = (struct cmpchar_info **) xmalloc (sizeof (cmpchar_table[0]) | |
1243 | * cmpchar_table_size); | |
1244 | } | |
1245 | else if (cmpchar_table_size <= n_cmpchars) | |
1246 | { | |
1247 | cmpchar_table_size += 256; | |
1248 | cmpchar_table | |
1249 | = (struct cmpchar_info **) xrealloc (cmpchar_table, | |
1250 | sizeof (cmpchar_table[0]) | |
1251 | * cmpchar_table_size); | |
1252 | } | |
1253 | ||
1254 | cmpcharp = (struct cmpchar_info *) xmalloc (sizeof (struct cmpchar_info)); | |
1255 | ||
1256 | cmpcharp->len = len; | |
1257 | cmpcharp->data = (unsigned char *) xmalloc (len + 1); | |
1258 | bcopy (str, cmpcharp->data, len); | |
1259 | cmpcharp->data[len] = 0; | |
1260 | cmpcharp->glyph_len = chars; | |
1261 | cmpcharp->glyph = (GLYPH *) xmalloc (sizeof (GLYPH) * chars); | |
1262 | if (embedded_rule) | |
1263 | { | |
1264 | cmpcharp->cmp_rule = (unsigned char *) xmalloc (chars); | |
1265 | cmpcharp->col_offset = (float *) xmalloc (sizeof (float) * chars); | |
1266 | } | |
1267 | else | |
1268 | { | |
1269 | cmpcharp->cmp_rule = NULL; | |
1270 | cmpcharp->col_offset = NULL; | |
1271 | } | |
1272 | ||
1273 | /* Setup GLYPH data and composition rules (if any) so as not to make | |
1274 | them every time on displaying. */ | |
1275 | { | |
1276 | unsigned char *bufp; | |
1277 | int width; | |
1278 | float leftmost = 0.0, rightmost = 1.0; | |
1279 | ||
1280 | if (embedded_rule) | |
1281 | /* At first, col_offset[N] is set to relative to col_offset[0]. */ | |
1282 | cmpcharp->col_offset[0] = 0; | |
1283 | ||
1284 | for (i = 0, bufp = cmpcharp->data + 1; i < chars; i++) | |
1285 | { | |
1286 | if (embedded_rule) | |
1287 | cmpcharp->cmp_rule[i] = *bufp++; | |
1288 | ||
1289 | if (*bufp == 0xA0) /* This is an ASCII character. */ | |
1290 | { | |
1291 | cmpcharp->glyph[i] = FAST_MAKE_GLYPH ((*++bufp & 0x7F), 0); | |
1292 | width = 1; | |
1293 | bufp++; | |
1294 | } | |
1295 | else /* Multibyte character. */ | |
1296 | { | |
1297 | /* Make `bufp' point normal multi-byte form temporally. */ | |
1298 | *bufp -= 0x20; | |
1299 | cmpcharp->glyph[i] | |
1300 | = FAST_MAKE_GLYPH (string_to_non_ascii_char (bufp, 4, 0), 0); | |
1301 | width = WIDTH_BY_CHAR_HEAD (*bufp); | |
1302 | *bufp += 0x20; | |
1303 | bufp += BYTES_BY_CHAR_HEAD (*bufp - 0x20); | |
1304 | } | |
1305 | ||
1306 | if (embedded_rule && i > 0) | |
1307 | { | |
1308 | /* Reference points (global_ref and new_ref) are | |
1309 | encoded as below: | |
1310 | ||
1311 | 0--1--2 -- ascent | |
1312 | | | | |
1313 | | | | |
1314 | | 4 -+--- center | |
1315 | -- 3 5 -- baseline | |
1316 | | | | |
1317 | 6--7--8 -- descent | |
1318 | ||
1319 | Now, we calculate the column offset of the new glyph | |
1320 | from the left edge of the first glyph. This can avoid | |
1321 | the same calculation everytime displaying this | |
1322 | composite character. */ | |
1323 | ||
1324 | /* Reference points of global glyph and new glyph. */ | |
1325 | int global_ref = (cmpcharp->cmp_rule[i] - 0xA0) / 9; | |
1326 | int new_ref = (cmpcharp->cmp_rule[i] - 0xA0) % 9; | |
1327 | /* Column offset relative to the first glyph. */ | |
1328 | float left = (leftmost | |
1329 | + (global_ref % 3) * (rightmost - leftmost) / 2.0 | |
1330 | - (new_ref % 3) * width / 2.0); | |
1331 | ||
1332 | cmpcharp->col_offset[i] = left; | |
1333 | if (left < leftmost) | |
1334 | leftmost = left; | |
1335 | if (left + width > rightmost) | |
1336 | rightmost = left + width; | |
1337 | } | |
1338 | else | |
1339 | { | |
1340 | if (width > rightmost) | |
1341 | rightmost = width; | |
1342 | } | |
1343 | } | |
1344 | if (embedded_rule) | |
1345 | { | |
1346 | /* Now col_offset[N] are relative to the left edge of the | |
1347 | first component. Make them relative to the left edge of | |
1348 | overall glyph. */ | |
1349 | for (i = 0; i < chars; i++) | |
1350 | cmpcharp->col_offset[i] -= leftmost; | |
1351 | /* Make rightmost holds width of overall glyph. */ | |
1352 | rightmost -= leftmost; | |
1353 | } | |
1354 | ||
1355 | cmpcharp->width = rightmost; | |
1356 | if (cmpcharp->width < rightmost) | |
1357 | /* To get a ceiling integer value. */ | |
1358 | cmpcharp->width++; | |
1359 | } | |
1360 | ||
1361 | cmpchar_table[n_cmpchars] = cmpcharp; | |
1362 | ||
1363 | return n_cmpchars++; | |
1364 | } | |
1365 | ||
1366 | /* Return the Nth element of the composite character C. */ | |
1367 | int | |
1368 | cmpchar_component (c, n) | |
1369 | unsigned int c, n; | |
1370 | { | |
1371 | int id = COMPOSITE_CHAR_ID (c); | |
1372 | ||
1373 | if (id >= n_cmpchars /* C is not a valid composite character. */ | |
1374 | || n >= cmpchar_table[id]->glyph_len) /* No such component. */ | |
1375 | return -1; | |
1376 | /* No face data is stored in glyph code. */ | |
1377 | return ((int) (cmpchar_table[id]->glyph[n])); | |
1378 | } | |
1379 | ||
1380 | DEFUN ("cmpcharp", Fcmpcharp, Scmpcharp, 1, 1, 0, | |
1381 | "T if CHAR is a composite character.") | |
1382 | (ch) | |
1383 | Lisp_Object ch; | |
1384 | { | |
1385 | CHECK_NUMBER (ch, 0); | |
1386 | return (COMPOSITE_CHAR_P (XINT (ch)) ? Qt : Qnil); | |
1387 | } | |
1388 | ||
1389 | DEFUN ("composite-char-component", Fcmpchar_component, Scmpchar_component, | |
1390 | 2, 2, 0, | |
1391 | "Return the IDXth component character of composite character CHARACTER.") | |
1392 | (character, idx) | |
1393 | Lisp_Object character, idx; | |
1394 | { | |
1395 | int c; | |
1396 | ||
1397 | CHECK_NUMBER (character, 0); | |
1398 | CHECK_NUMBER (idx, 1); | |
1399 | ||
1400 | if ((c = cmpchar_component (XINT (character), XINT (idx))) < 0) | |
1401 | args_out_of_range (character, idx); | |
1402 | ||
1403 | return make_number (c); | |
1404 | } | |
1405 | ||
1406 | DEFUN ("composite-char-composition-rule", Fcmpchar_cmp_rule, Scmpchar_cmp_rule, | |
1407 | 2, 2, 0, | |
55001746 KH |
1408 | "Return the Nth composition rule embedded in composite character CHARACTER.\n\ |
1409 | The returned rule is for composing the Nth component\n\ | |
1410 | on the (N-1)th component. If N is 0, the returned value is always 255.") | |
1411 | (character, n) | |
1412 | Lisp_Object character, n; | |
4ed46869 KH |
1413 | { |
1414 | int id, i; | |
1415 | ||
1416 | CHECK_NUMBER (character, 0); | |
55001746 | 1417 | CHECK_NUMBER (n, 1); |
4ed46869 KH |
1418 | |
1419 | id = COMPOSITE_CHAR_ID (XINT (character)); | |
1420 | if (id < 0 || id >= n_cmpchars) | |
1421 | error ("Invalid composite character: %d", XINT (character)); | |
55001746 | 1422 | i = XINT (n); |
4ed46869 | 1423 | if (i > cmpchar_table[id]->glyph_len) |
55001746 | 1424 | args_out_of_range (character, n); |
4ed46869 KH |
1425 | |
1426 | return make_number (cmpchar_table[id]->cmp_rule[i]); | |
1427 | } | |
1428 | ||
1429 | DEFUN ("composite-char-composition-rule-p", Fcmpchar_cmp_rule_p, | |
1430 | Scmpchar_cmp_rule_p, 1, 1, 0, | |
1431 | "Return non-nil if composite character CHARACTER contains a embedded rule.") | |
1432 | (character) | |
1433 | Lisp_Object character; | |
1434 | { | |
1435 | int id; | |
1436 | ||
1437 | CHECK_NUMBER (character, 0); | |
1438 | id = COMPOSITE_CHAR_ID (XINT (character)); | |
1439 | if (id < 0 || id >= n_cmpchars) | |
1440 | error ("Invalid composite character: %d", XINT (character)); | |
1441 | ||
1442 | return (cmpchar_table[id]->cmp_rule ? Qt : Qnil); | |
1443 | } | |
1444 | ||
1445 | DEFUN ("composite-char-component-count", Fcmpchar_cmp_count, | |
1446 | Scmpchar_cmp_count, 1, 1, 0, | |
1447 | "Return number of compoents of composite character CHARACTER.") | |
1448 | (character) | |
1449 | Lisp_Object character; | |
1450 | { | |
1451 | int id; | |
1452 | ||
1453 | CHECK_NUMBER (character, 0); | |
1454 | id = COMPOSITE_CHAR_ID (XINT (character)); | |
1455 | if (id < 0 || id >= n_cmpchars) | |
1456 | error ("Invalid composite character: %d", XINT (character)); | |
1457 | ||
1458 | return (make_number (cmpchar_table[id]->glyph_len)); | |
1459 | } | |
1460 | ||
1461 | DEFUN ("compose-string", Fcompose_string, Scompose_string, | |
1462 | 1, 1, 0, | |
1463 | "Return one char string composed from all characters in STRING.") | |
1464 | (str) | |
1465 | Lisp_Object str; | |
1466 | { | |
1467 | unsigned char buf[MAX_LENGTH_OF_MULTI_BYTE_FORM], *p, *pend, *ptemp; | |
1468 | int len, i; | |
1469 | ||
1470 | CHECK_STRING (str, 0); | |
1471 | ||
1472 | buf[0] = LEADING_CODE_COMPOSITION; | |
1473 | p = XSTRING (str)->data; | |
1474 | pend = p + XSTRING (str)->size; | |
1475 | i = 1; | |
1476 | while (p < pend) | |
1477 | { | |
1478 | if (*p < 0x20 || *p == 127) /* control code */ | |
1479 | error ("Invalid component character: %d", *p); | |
1480 | else if (*p < 0x80) /* ASCII */ | |
1481 | { | |
1482 | if (i + 2 >= MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1483 | error ("Too long string to be composed: %s", XSTRING (str)->data); | |
1484 | /* Prepend an ASCII charset indicator 0xA0, set MSB of the | |
1485 | code itself. */ | |
1486 | buf[i++] = 0xA0; | |
1487 | buf[i++] = *p++ + 0x80; | |
1488 | } | |
1489 | else if (*p == LEADING_CODE_COMPOSITION) /* composite char */ | |
1490 | { | |
1491 | /* Already composed. Eliminate the heading | |
1492 | LEADING_CODE_COMPOSITION, keep the remaining bytes | |
1493 | unchanged. */ | |
1494 | p++; | |
1495 | ptemp = p; | |
1496 | while (! CHAR_HEAD_P (p)) p++; | |
1497 | if (i + (p - ptemp) >= MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1498 | error ("Too long string to be composed: %s", XSTRING (str)->data); | |
1499 | bcopy (ptemp, buf + i, p - ptemp); | |
1500 | i += p - ptemp; | |
1501 | } | |
1502 | else /* multibyte char */ | |
1503 | { | |
1504 | /* Add 0x20 to the base leading-code, keep the remaining | |
1505 | bytes unchanged. */ | |
1506 | len = BYTES_BY_CHAR_HEAD (*p); | |
1507 | if (i + len >= MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1508 | error ("Too long string to be composed: %s", XSTRING (str)->data); | |
1509 | bcopy (p, buf + i, len); | |
1510 | buf[i] += 0x20; | |
1511 | p += len, i += len; | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | if (i < 5) | |
1516 | /* STR contains only one character, which can't be composed. */ | |
1517 | error ("Too short string to be composed: %s", XSTRING (str)->data); | |
1518 | ||
1519 | return make_string (buf, i); | |
1520 | } | |
1521 | ||
1522 | \f | |
1523 | charset_id_internal (charset_name) | |
1524 | char *charset_name; | |
1525 | { | |
1526 | Lisp_Object val = Fget (intern (charset_name), Qcharset); | |
1527 | ||
1528 | if (!VECTORP (val)) | |
1529 | error ("Charset %s is not defined", charset_name); | |
1530 | ||
1531 | return (XINT (XVECTOR (val)->contents[0])); | |
1532 | } | |
1533 | ||
1534 | DEFUN ("setup-special-charsets", Fsetup_special_charsets, | |
1535 | Ssetup_special_charsets, 0, 0, 0, "Internal use only.") | |
1536 | () | |
1537 | { | |
1538 | charset_latin_iso8859_1 = charset_id_internal ("latin-iso8859-1"); | |
1539 | charset_jisx0208_1978 = charset_id_internal ("japanese-jisx0208-1978"); | |
1540 | charset_jisx0208 = charset_id_internal ("japanese-jisx0208"); | |
1541 | charset_katakana_jisx0201 = charset_id_internal ("katakana-jisx0201"); | |
1542 | charset_latin_jisx0201 = charset_id_internal ("latin-jisx0201"); | |
1543 | charset_big5_1 = charset_id_internal ("chinese-big5-1"); | |
1544 | charset_big5_2 = charset_id_internal ("chinese-big5-2"); | |
1545 | return Qnil; | |
1546 | } | |
1547 | ||
1548 | init_charset_once () | |
1549 | { | |
1550 | int i, j, k; | |
1551 | ||
1552 | staticpro (&Vcharset_table); | |
1553 | staticpro (&Vcharset_symbol_table); | |
1554 | ||
1555 | /* This has to be done here, before we call Fmake_char_table. */ | |
1556 | Qcharset_table = intern ("charset-table"); | |
1557 | staticpro (&Qcharset_table); | |
1558 | ||
1559 | /* Intern this now in case it isn't already done. | |
1560 | Setting this variable twice is harmless. | |
1561 | But don't staticpro it here--that is done in alloc.c. */ | |
1562 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); | |
1563 | ||
1564 | /* Now we are ready to set up this property, so we can | |
1565 | create the charset table. */ | |
1566 | Fput (Qcharset_table, Qchar_table_extra_slots, make_number (0)); | |
1567 | Vcharset_table = Fmake_char_table (Qcharset_table, Qnil); | |
1568 | ||
513ee442 | 1569 | Vcharset_symbol_table = Fmake_vector (make_number (MAX_CHARSET + 1), Qnil); |
4ed46869 KH |
1570 | |
1571 | /* Setup tables. */ | |
1572 | for (i = 0; i < 2; i++) | |
1573 | for (j = 0; j < 2; j++) | |
1574 | for (k = 0; k < 128; k++) | |
1575 | iso_charset_table [i][j][k] = -1; | |
1576 | ||
1577 | bzero (cmpchar_hash_table, sizeof cmpchar_hash_table); | |
1578 | cmpchar_table_size = n_cmpchars = 0; | |
1579 | ||
1580 | for (i = 0; i < 256; i++) | |
1581 | BYTES_BY_CHAR_HEAD (i) = 1; | |
1582 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 3; | |
1583 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 3; | |
1584 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 4; | |
1585 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 4; | |
1586 | /* The following doesn't reflect the actual bytes, but just to tell | |
1587 | that it is a start of a multibyte character. */ | |
1588 | BYTES_BY_CHAR_HEAD (LEADING_CODE_COMPOSITION) = 2; | |
1589 | ||
1590 | for (i = 0; i < 128; i++) | |
1591 | WIDTH_BY_CHAR_HEAD (i) = 1; | |
1592 | for (; i < 256; i++) | |
1593 | WIDTH_BY_CHAR_HEAD (i) = 4; | |
1594 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 1; | |
1595 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 2; | |
1596 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 1; | |
1597 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 2; | |
1598 | } | |
1599 | ||
1600 | #ifdef emacs | |
1601 | ||
1602 | syms_of_charset () | |
1603 | { | |
1604 | Qascii = intern ("ascii"); | |
1605 | staticpro (&Qascii); | |
1606 | ||
1607 | Qcharset = intern ("charset"); | |
1608 | staticpro (&Qcharset); | |
1609 | ||
1610 | /* Define ASCII charset now. */ | |
1611 | update_charset_table (make_number (CHARSET_ASCII), | |
1612 | make_number (1), make_number (94), | |
1613 | make_number (1), | |
1614 | make_number (0), | |
1615 | make_number ('B'), | |
1616 | make_number (0), | |
1617 | build_string ("ASCII"), | |
1618 | build_string ("ASCII"), | |
1619 | build_string ("ASCII (ISO646 IRV)")); | |
1620 | CHARSET_SYMBOL (CHARSET_ASCII) = Qascii; | |
1621 | Fput (Qascii, Qcharset, CHARSET_TABLE_ENTRY (CHARSET_ASCII)); | |
1622 | ||
1623 | Qcomposition = intern ("composition"); | |
1624 | staticpro (&Qcomposition); | |
1625 | CHARSET_SYMBOL (CHARSET_COMPOSITION) = Qcomposition; | |
1626 | ||
1627 | defsubr (&Sdefine_charset); | |
1628 | defsubr (&Sdeclare_equiv_charset); | |
1629 | defsubr (&Sfind_charset_region); | |
1630 | defsubr (&Sfind_charset_string); | |
1631 | defsubr (&Smake_char_internal); | |
1632 | defsubr (&Ssplit_char); | |
1633 | defsubr (&Schar_charset); | |
1634 | defsubr (&Siso_charset); | |
9d3d8cba | 1635 | defsubr (&Schar_valid_p); |
4ed46869 KH |
1636 | defsubr (&Schar_bytes); |
1637 | defsubr (&Schar_width); | |
1638 | defsubr (&Sstring_width); | |
1639 | defsubr (&Schar_direction); | |
1640 | defsubr (&Schars_in_string); | |
af4fecb4 | 1641 | defsubr (&Schars_in_region); |
4ed46869 KH |
1642 | defsubr (&Schar_boundary_p); |
1643 | defsubr (&Sconcat_chars); | |
1644 | defsubr (&Scmpcharp); | |
1645 | defsubr (&Scmpchar_component); | |
1646 | defsubr (&Scmpchar_cmp_rule); | |
1647 | defsubr (&Scmpchar_cmp_rule_p); | |
1648 | defsubr (&Scmpchar_cmp_count); | |
1649 | defsubr (&Scompose_string); | |
1650 | defsubr (&Ssetup_special_charsets); | |
1651 | ||
1652 | DEFVAR_LISP ("charset-list", &Vcharset_list, | |
1653 | "List of charsets ever defined."); | |
1654 | Vcharset_list = Fcons (Qascii, Qnil); | |
1655 | ||
1656 | DEFVAR_INT ("leading-code-composition", &leading_code_composition, | |
1657 | "Leading-code of composite characters."); | |
1658 | leading_code_composition = LEADING_CODE_COMPOSITION; | |
1659 | ||
1660 | DEFVAR_INT ("leading-code-private-11", &leading_code_private_11, | |
1661 | "Leading-code of private TYPE9N charset of column-width 1."); | |
1662 | leading_code_private_11 = LEADING_CODE_PRIVATE_11; | |
1663 | ||
1664 | DEFVAR_INT ("leading-code-private-12", &leading_code_private_12, | |
1665 | "Leading-code of private TYPE9N charset of column-width 2."); | |
1666 | leading_code_private_12 = LEADING_CODE_PRIVATE_12; | |
1667 | ||
1668 | DEFVAR_INT ("leading-code-private-21", &leading_code_private_21, | |
1669 | "Leading-code of private TYPE9Nx9N charset of column-width 1."); | |
1670 | leading_code_private_21 = LEADING_CODE_PRIVATE_21; | |
1671 | ||
1672 | DEFVAR_INT ("leading-code-private-22", &leading_code_private_22, | |
1673 | "Leading-code of private TYPE9Nx9N charset of column-width 2."); | |
1674 | leading_code_private_22 = LEADING_CODE_PRIVATE_22; | |
1675 | } | |
1676 | ||
1677 | #endif /* emacs */ |