Commit | Line | Data |
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75c8c592 | 1 | /* Basic multilingual character support. |
35e623fb | 2 | Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN. |
75c8c592 | 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; | |
0282eb69 | 44 | Lisp_Object Qunknown; |
4ed46869 KH |
45 | |
46 | /* Declaration of special leading-codes. */ | |
47 | int leading_code_composition; /* for composite characters */ | |
48 | int leading_code_private_11; /* for private DIMENSION1 of 1-column */ | |
49 | int leading_code_private_12; /* for private DIMENSION1 of 2-column */ | |
50 | int leading_code_private_21; /* for private DIMENSION2 of 1-column */ | |
51 | int leading_code_private_22; /* for private DIMENSION2 of 2-column */ | |
52 | ||
53 | /* Declaration of special charsets. */ | |
54 | int charset_ascii; /* ASCII */ | |
55 | int charset_composition; /* for a composite character */ | |
56 | int charset_latin_iso8859_1; /* ISO8859-1 (Latin-1) */ | |
57 | int charset_jisx0208_1978; /* JISX0208.1978 (Japanese Kanji old set) */ | |
58 | int charset_jisx0208; /* JISX0208.1983 (Japanese Kanji) */ | |
59 | int charset_katakana_jisx0201; /* JISX0201.Kana (Japanese Katakana) */ | |
60 | int charset_latin_jisx0201; /* JISX0201.Roman (Japanese Roman) */ | |
61 | int charset_big5_1; /* Big5 Level 1 (Chinese Traditional) */ | |
62 | int charset_big5_2; /* Big5 Level 2 (Chinese Traditional) */ | |
63 | ||
b0e3cf2b KH |
64 | int min_composite_char; |
65 | ||
4ed46869 KH |
66 | Lisp_Object Qcharset_table; |
67 | ||
68 | /* A char-table containing information of each character set. */ | |
69 | Lisp_Object Vcharset_table; | |
70 | ||
71 | /* A vector of charset symbol indexed by charset-id. This is used | |
72 | only for returning charset symbol from C functions. */ | |
73 | Lisp_Object Vcharset_symbol_table; | |
74 | ||
75 | /* A list of charset symbols ever defined. */ | |
76 | Lisp_Object Vcharset_list; | |
77 | ||
537efd8d KH |
78 | /* Vector of translation table ever defined. |
79 | ID of a translation table is used to index this vector. */ | |
80 | Lisp_Object Vtranslation_table_vector; | |
b0e3cf2b | 81 | |
c1a08b4c KH |
82 | /* A char-table for characters which may invoke auto-filling. */ |
83 | Lisp_Object Vauto_fill_chars; | |
84 | ||
85 | Lisp_Object Qauto_fill_chars; | |
86 | ||
4ed46869 KH |
87 | /* Tables used by macros BYTES_BY_CHAR_HEAD and WIDTH_BY_CHAR_HEAD. */ |
88 | int bytes_by_char_head[256]; | |
89 | int width_by_char_head[256]; | |
90 | ||
91 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
92 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
93 | int iso_charset_table[2][2][128]; | |
94 | ||
513ee442 KH |
95 | /* Table of pointers to the structure `cmpchar_info' indexed by |
96 | CMPCHAR-ID. */ | |
97 | struct cmpchar_info **cmpchar_table; | |
98 | /* The current size of `cmpchar_table'. */ | |
99 | static int cmpchar_table_size; | |
100 | /* Number of the current composite characters. */ | |
101 | int n_cmpchars; | |
102 | ||
4ed46869 KH |
103 | /* Variables used locally in the macro FETCH_MULTIBYTE_CHAR. */ |
104 | unsigned char *_fetch_multibyte_char_p; | |
105 | int _fetch_multibyte_char_len; | |
106 | ||
35e623fb RS |
107 | /* Offset to add to a non-ASCII value when inserting it. */ |
108 | int nonascii_insert_offset; | |
109 | ||
4cf9710d RS |
110 | /* Translation table for converting non-ASCII unibyte characters |
111 | to multibyte codes, or nil. */ | |
b4e9dd77 | 112 | Lisp_Object Vnonascii_translation_table; |
4cf9710d | 113 | |
8a73a704 KH |
114 | /* List of all possible generic characters. */ |
115 | Lisp_Object Vgeneric_character_list; | |
116 | ||
046b1f03 RS |
117 | #define min(X, Y) ((X) < (Y) ? (X) : (Y)) |
118 | #define max(X, Y) ((X) > (Y) ? (X) : (Y)) | |
119 | \f | |
93bcb785 KH |
120 | void |
121 | invalid_character (c) | |
122 | int c; | |
123 | { | |
ba7434e5 | 124 | error ("Invalid character: 0%o, %d, 0x%x", c, c, c); |
93bcb785 KH |
125 | } |
126 | ||
127 | ||
4ed46869 KH |
128 | /* Set STR a pointer to the multi-byte form of the character C. If C |
129 | is not a composite character, the multi-byte form is set in WORKBUF | |
130 | and STR points WORKBUF. The caller should allocate at least 4-byte | |
131 | area at WORKBUF in advance. Returns the length of the multi-byte | |
bd4c6dd0 KH |
132 | form. If C is an invalid character to have a multi-byte form, |
133 | signal an error. | |
4ed46869 KH |
134 | |
135 | Use macro `CHAR_STRING (C, WORKBUF, STR)' instead of calling this | |
136 | function directly if C can be an ASCII character. */ | |
137 | ||
138 | int | |
139 | non_ascii_char_to_string (c, workbuf, str) | |
140 | int c; | |
141 | unsigned char *workbuf, **str; | |
142 | { | |
6dc0722d | 143 | int charset, c1, c2; |
4ed46869 | 144 | |
6662e69b | 145 | if (c & CHAR_MODIFIER_MASK) /* This includes the case C is negative. */ |
8ac5a9cc | 146 | { |
6662e69b KH |
147 | /* Multibyte character can't have a modifier bit. */ |
148 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
149 | invalid_character (c); | |
150 | ||
151 | /* For Meta, Shift, and Control modifiers, we need special care. */ | |
8ac5a9cc | 152 | if (c & CHAR_META) |
6662e69b KH |
153 | { |
154 | /* Move the meta bit to the right place for a string. */ | |
155 | c = (c & ~CHAR_META) | 0x80; | |
156 | } | |
157 | if (c & CHAR_SHIFT) | |
158 | { | |
159 | /* Shift modifier is valid only with [A-Za-z]. */ | |
160 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
161 | c &= ~CHAR_SHIFT; | |
162 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
163 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
164 | } | |
8ac5a9cc | 165 | if (c & CHAR_CTL) |
6662e69b KH |
166 | { |
167 | /* Simulate the code in lread.c. */ | |
168 | /* Allow `\C- ' and `\C-?'. */ | |
169 | if (c == (CHAR_CTL | ' ')) | |
170 | c = 0; | |
171 | else if (c == (CHAR_CTL | '?')) | |
172 | c = 127; | |
173 | /* ASCII control chars are made from letters (both cases), | |
174 | as well as the non-letters within 0100...0137. */ | |
175 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
176 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
177 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
178 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
179 | } | |
180 | ||
181 | /* If C still has any modifier bits, it is an invalid character. */ | |
182 | if (c & CHAR_MODIFIER_MASK) | |
183 | invalid_character (c); | |
184 | ||
8ac5a9cc KH |
185 | *str = workbuf; |
186 | *workbuf = c; | |
187 | return 1; | |
188 | } | |
189 | ||
da63a5fe KH |
190 | if (c < 0) |
191 | invalid_character (c); | |
192 | ||
4ed46869 KH |
193 | if (COMPOSITE_CHAR_P (c)) |
194 | { | |
195 | int cmpchar_id = COMPOSITE_CHAR_ID (c); | |
196 | ||
197 | if (cmpchar_id < n_cmpchars) | |
198 | { | |
199 | *str = cmpchar_table[cmpchar_id]->data; | |
200 | return cmpchar_table[cmpchar_id]->len; | |
201 | } | |
202 | else | |
203 | { | |
93bcb785 | 204 | invalid_character (c); |
4ed46869 KH |
205 | } |
206 | } | |
207 | ||
208 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); | |
bd4c6dd0 KH |
209 | if (!charset |
210 | || ! CHARSET_DEFINED_P (charset) | |
211 | || c1 >= 0 && c1 < 32 | |
212 | || c2 >= 0 && c2 < 32) | |
93bcb785 | 213 | invalid_character (c); |
4ed46869 KH |
214 | |
215 | *str = workbuf; | |
216 | *workbuf++ = CHARSET_LEADING_CODE_BASE (charset); | |
217 | if (*workbuf = CHARSET_LEADING_CODE_EXT (charset)) | |
218 | workbuf++; | |
219 | *workbuf++ = c1 | 0x80; | |
6dc0722d | 220 | if (c2 >= 0) |
4ed46869 KH |
221 | *workbuf++ = c2 | 0x80; |
222 | ||
223 | return (workbuf - *str); | |
224 | } | |
225 | ||
226 | /* Return a non-ASCII character of which multi-byte form is at STR of | |
227 | length LEN. If ACTUAL_LEN is not NULL, the actual length of the | |
537efd8d KH |
228 | multibyte form is set to the address ACTUAL_LEN. |
229 | ||
230 | If exclude_tail_garbage is nonzero, ACTUAL_LEN excludes gabage | |
231 | bytes following the non-ASCII character. | |
4ed46869 KH |
232 | |
233 | Use macro `STRING_CHAR (STR, LEN)' instead of calling this function | |
234 | directly if STR can hold an ASCII character. */ | |
235 | ||
dfcf069d | 236 | int |
537efd8d | 237 | string_to_non_ascii_char (str, len, actual_len, exclude_tail_garbage) |
8867de67 | 238 | const unsigned char *str; |
537efd8d | 239 | int len, *actual_len, exclude_tail_garbage; |
4ed46869 KH |
240 | { |
241 | int charset; | |
242 | unsigned char c1, c2; | |
bb63e573 KH |
243 | int c, bytes; |
244 | const unsigned char *begp = str; | |
4ed46869 | 245 | |
bb63e573 | 246 | c = *str++; |
90d7b74e KH |
247 | bytes = 1; |
248 | ||
249 | if (BASE_LEADING_CODE_P (c)) | |
bb63e573 KH |
250 | do { |
251 | while (bytes < len && ! CHAR_HEAD_P (begp[bytes])) bytes++; | |
90d7b74e KH |
252 | |
253 | if (c == LEADING_CODE_COMPOSITION) | |
254 | { | |
bb63e573 | 255 | int cmpchar_id = str_cmpchar_id (begp, bytes); |
90d7b74e KH |
256 | |
257 | if (cmpchar_id >= 0) | |
5d76bc89 KH |
258 | { |
259 | c = MAKE_COMPOSITE_CHAR (cmpchar_id); | |
1dca54f6 | 260 | str += cmpchar_table[cmpchar_id]->len - 1; |
5d76bc89 | 261 | } |
1dca54f6 KH |
262 | else |
263 | str += bytes - 1; | |
90d7b74e KH |
264 | } |
265 | else | |
266 | { | |
bb63e573 | 267 | const unsigned char *endp = begp + bytes; |
90d7b74e | 268 | int charset = c, c1, c2 = 0; |
4ed46869 | 269 | |
bb63e573 | 270 | if (str >= endp) break; |
a6c25326 | 271 | if (c >= LEADING_CODE_PRIVATE_11 && c <= LEADING_CODE_PRIVATE_22) |
90d7b74e | 272 | { |
bb63e573 KH |
273 | charset = *str++; |
274 | if (str < endp) | |
275 | c1 = *str++ & 0x7F; | |
276 | else | |
277 | c1 = charset, charset = c; | |
90d7b74e | 278 | } |
bb63e573 KH |
279 | else |
280 | c1 = *str++ & 0x7f; | |
281 | if (CHARSET_DEFINED_P (charset) | |
282 | && CHARSET_DIMENSION (charset) == 2 | |
283 | && str < endp) | |
1dca54f6 | 284 | c2 = *str++ & 0x7F; |
bb63e573 | 285 | c = MAKE_NON_ASCII_CHAR (charset, c1, c2); |
90d7b74e | 286 | } |
bb63e573 | 287 | } while (0); |
4ed46869 KH |
288 | |
289 | if (actual_len) | |
bb63e573 | 290 | *actual_len = exclude_tail_garbage ? str - begp : bytes; |
4ed46869 KH |
291 | return c; |
292 | } | |
293 | ||
294 | /* Return the length of the multi-byte form at string STR of length LEN. */ | |
295 | int | |
296 | multibyte_form_length (str, len) | |
8867de67 | 297 | const unsigned char *str; |
4ed46869 KH |
298 | int len; |
299 | { | |
90d7b74e | 300 | int bytes = 1; |
4ed46869 | 301 | |
90d7b74e KH |
302 | if (BASE_LEADING_CODE_P (*str)) |
303 | while (bytes < len && ! CHAR_HEAD_P (str[bytes])) bytes++; | |
4ed46869 | 304 | |
90d7b74e | 305 | return bytes; |
4ed46869 KH |
306 | } |
307 | ||
308 | /* Check if string STR of length LEN contains valid multi-byte form of | |
309 | a character. If valid, charset and position codes of the character | |
310 | is set at *CHARSET, *C1, and *C2, and return 0. If not valid, | |
311 | return -1. This should be used only in the macro SPLIT_STRING | |
312 | which checks range of STR in advance. */ | |
313 | ||
dfcf069d | 314 | int |
4ed46869 | 315 | split_non_ascii_string (str, len, charset, c1, c2) |
8867de67 KH |
316 | register const unsigned char *str; |
317 | register unsigned char *c1, *c2; | |
4ed46869 KH |
318 | register int len, *charset; |
319 | { | |
320 | register unsigned int cs = *str++; | |
321 | ||
322 | if (cs == LEADING_CODE_COMPOSITION) | |
323 | { | |
324 | int cmpchar_id = str_cmpchar_id (str - 1, len); | |
325 | ||
326 | if (cmpchar_id < 0) | |
327 | return -1; | |
328 | *charset = cs, *c1 = cmpchar_id >> 7, *c2 = cmpchar_id & 0x7F; | |
329 | } | |
330 | else if ((cs < LEADING_CODE_PRIVATE_11 || (cs = *str++) >= 0xA0) | |
331 | && CHARSET_DEFINED_P (cs)) | |
332 | { | |
333 | *charset = cs; | |
334 | if (*str < 0xA0) | |
335 | return -1; | |
336 | *c1 = (*str++) & 0x7F; | |
337 | if (CHARSET_DIMENSION (cs) == 2) | |
338 | { | |
339 | if (*str < 0xA0) | |
340 | return -1; | |
341 | *c2 = (*str++) & 0x7F; | |
342 | } | |
343 | } | |
344 | else | |
345 | return -1; | |
346 | return 0; | |
347 | } | |
348 | ||
537efd8d | 349 | /* Translate character C by translation table TABLE. If C |
b4e9dd77 KH |
350 | is negative, translate a character specified by CHARSET, C1, and C2 |
351 | (C1 and C2 are code points of the character). If no translation is | |
352 | found in TABLE, return C. */ | |
dfcf069d | 353 | int |
b4e9dd77 | 354 | translate_char (table, c, charset, c1, c2) |
23d2a7f1 KH |
355 | Lisp_Object table; |
356 | int c, charset, c1, c2; | |
357 | { | |
358 | Lisp_Object ch; | |
359 | int alt_charset, alt_c1, alt_c2, dimension; | |
360 | ||
361 | if (c < 0) c = MAKE_CHAR (charset, c1, c2); | |
362 | if (!CHAR_TABLE_P (table) | |
363 | || (ch = Faref (table, make_number (c)), !INTEGERP (ch)) | |
364 | || XINT (ch) < 0) | |
365 | return c; | |
366 | ||
367 | SPLIT_CHAR (XFASTINT (ch), alt_charset, alt_c1, alt_c2); | |
368 | dimension = CHARSET_DIMENSION (alt_charset); | |
369 | if (dimension == 1 && alt_c1 > 0 || dimension == 2 && alt_c2 > 0) | |
370 | /* CH is not a generic character, just return it. */ | |
371 | return XFASTINT (ch); | |
372 | ||
373 | /* Since CH is a generic character, we must return a specific | |
374 | charater which has the same position codes as C from CH. */ | |
375 | if (charset < 0) | |
376 | SPLIT_CHAR (c, charset, c1, c2); | |
377 | if (dimension != CHARSET_DIMENSION (charset)) | |
378 | /* We can't make such a character because of dimension mismatch. */ | |
379 | return c; | |
23d2a7f1 KH |
380 | return MAKE_CHAR (alt_charset, c1, c2); |
381 | } | |
382 | ||
d2665018 | 383 | /* Convert the unibyte character C to multibyte based on |
b4e9dd77 | 384 | Vnonascii_translation_table or nonascii_insert_offset. If they can't |
d2665018 KH |
385 | convert C to a valid multibyte character, convert it based on |
386 | DEFAULT_NONASCII_INSERT_OFFSET which makes C a Latin-1 character. */ | |
35e623fb | 387 | |
dfcf069d | 388 | int |
35e623fb RS |
389 | unibyte_char_to_multibyte (c) |
390 | int c; | |
391 | { | |
543b4f61 | 392 | if (c < 0400 && c >= 0200) |
35e623fb | 393 | { |
d2665018 KH |
394 | int c_save = c; |
395 | ||
b4e9dd77 | 396 | if (! NILP (Vnonascii_translation_table)) |
bbf12bb3 KH |
397 | { |
398 | c = XINT (Faref (Vnonascii_translation_table, make_number (c))); | |
399 | if (c >= 0400 && ! VALID_MULTIBYTE_CHAR_P (c)) | |
400 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; | |
401 | } | |
402 | else if (c >= 0240 && nonascii_insert_offset > 0) | |
403 | { | |
404 | c += nonascii_insert_offset; | |
405 | if (c < 0400 || ! VALID_MULTIBYTE_CHAR_P (c)) | |
406 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; | |
407 | } | |
408 | else if (c >= 0240) | |
d2665018 | 409 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
35e623fb RS |
410 | } |
411 | return c; | |
412 | } | |
76d7b829 KH |
413 | |
414 | ||
415 | /* Convert the multibyte character C to unibyte 8-bit character based | |
416 | on Vnonascii_translation_table or nonascii_insert_offset. If | |
417 | REV_TBL is non-nil, it should be a reverse table of | |
418 | Vnonascii_translation_table, i.e. what given by: | |
419 | Fchar_table_extra_slot (Vnonascii_translation_table, make_number (0)) */ | |
420 | ||
421 | int | |
422 | multibyte_char_to_unibyte (c, rev_tbl) | |
423 | int c; | |
424 | Lisp_Object rev_tbl; | |
425 | { | |
426 | if (!SINGLE_BYTE_CHAR_P (c)) | |
427 | { | |
428 | int c_save = c; | |
429 | ||
430 | if (! CHAR_TABLE_P (rev_tbl) | |
431 | && CHAR_TABLE_P (Vnonascii_translation_table)) | |
432 | rev_tbl = Fchar_table_extra_slot (Vnonascii_translation_table, | |
433 | make_number (0)); | |
434 | if (CHAR_TABLE_P (rev_tbl)) | |
435 | { | |
436 | Lisp_Object temp; | |
437 | temp = Faref (rev_tbl, make_number (c)); | |
438 | if (INTEGERP (temp)) | |
439 | c = XINT (temp); | |
bbf12bb3 KH |
440 | if (c >= 256) |
441 | c = (c_save & 0177) + 0200; | |
442 | } | |
443 | else | |
444 | { | |
445 | if (nonascii_insert_offset > 0) | |
446 | c -= nonascii_insert_offset; | |
447 | if (c < 128 || c >= 256) | |
448 | c = (c_save & 0177) + 0200; | |
76d7b829 | 449 | } |
76d7b829 KH |
450 | } |
451 | ||
452 | return c; | |
453 | } | |
454 | ||
35e623fb | 455 | \f |
4ed46869 KH |
456 | /* Update the table Vcharset_table with the given arguments (see the |
457 | document of `define-charset' for the meaning of each argument). | |
458 | Several other table contents are also updated. The caller should | |
459 | check the validity of CHARSET-ID and the remaining arguments in | |
460 | advance. */ | |
461 | ||
462 | void | |
463 | update_charset_table (charset_id, dimension, chars, width, direction, | |
464 | iso_final_char, iso_graphic_plane, | |
465 | short_name, long_name, description) | |
466 | Lisp_Object charset_id, dimension, chars, width, direction; | |
467 | Lisp_Object iso_final_char, iso_graphic_plane; | |
468 | Lisp_Object short_name, long_name, description; | |
469 | { | |
470 | int charset = XINT (charset_id); | |
471 | int bytes; | |
472 | unsigned char leading_code_base, leading_code_ext; | |
473 | ||
6dc0722d KH |
474 | if (NILP (CHARSET_TABLE_ENTRY (charset))) |
475 | CHARSET_TABLE_ENTRY (charset) | |
476 | = Fmake_vector (make_number (CHARSET_MAX_IDX), Qnil); | |
4ed46869 KH |
477 | |
478 | /* Get byte length of multibyte form, base leading-code, and | |
479 | extended leading-code of the charset. See the comment under the | |
480 | title "GENERAL NOTE on CHARACTER SET (CHARSET)" in charset.h. */ | |
481 | bytes = XINT (dimension); | |
482 | if (charset < MIN_CHARSET_PRIVATE_DIMENSION1) | |
483 | { | |
484 | /* Official charset, it doesn't have an extended leading-code. */ | |
485 | if (charset != CHARSET_ASCII) | |
486 | bytes += 1; /* For a base leading-code. */ | |
487 | leading_code_base = charset; | |
488 | leading_code_ext = 0; | |
489 | } | |
490 | else | |
491 | { | |
492 | /* Private charset. */ | |
493 | bytes += 2; /* For base and extended leading-codes. */ | |
494 | leading_code_base | |
495 | = (charset < LEADING_CODE_EXT_12 | |
496 | ? LEADING_CODE_PRIVATE_11 | |
497 | : (charset < LEADING_CODE_EXT_21 | |
498 | ? LEADING_CODE_PRIVATE_12 | |
499 | : (charset < LEADING_CODE_EXT_22 | |
500 | ? LEADING_CODE_PRIVATE_21 | |
501 | : LEADING_CODE_PRIVATE_22))); | |
502 | leading_code_ext = charset; | |
503 | } | |
504 | ||
6ef23ebb KH |
505 | if (BYTES_BY_CHAR_HEAD (leading_code_base) != bytes) |
506 | error ("Invalid dimension for the charset-ID %d", charset); | |
507 | ||
4ed46869 KH |
508 | CHARSET_TABLE_INFO (charset, CHARSET_ID_IDX) = charset_id; |
509 | CHARSET_TABLE_INFO (charset, CHARSET_BYTES_IDX) = make_number (bytes); | |
510 | CHARSET_TABLE_INFO (charset, CHARSET_DIMENSION_IDX) = dimension; | |
511 | CHARSET_TABLE_INFO (charset, CHARSET_CHARS_IDX) = chars; | |
512 | CHARSET_TABLE_INFO (charset, CHARSET_WIDTH_IDX) = width; | |
513 | CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX) = direction; | |
514 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_BASE_IDX) | |
515 | = make_number (leading_code_base); | |
516 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_EXT_IDX) | |
517 | = make_number (leading_code_ext); | |
518 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_FINAL_CHAR_IDX) = iso_final_char; | |
519 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_GRAPHIC_PLANE_IDX) | |
520 | = iso_graphic_plane; | |
521 | CHARSET_TABLE_INFO (charset, CHARSET_SHORT_NAME_IDX) = short_name; | |
522 | CHARSET_TABLE_INFO (charset, CHARSET_LONG_NAME_IDX) = long_name; | |
523 | CHARSET_TABLE_INFO (charset, CHARSET_DESCRIPTION_IDX) = description; | |
524 | CHARSET_TABLE_INFO (charset, CHARSET_PLIST_IDX) = Qnil; | |
525 | ||
526 | { | |
527 | /* If we have already defined a charset which has the same | |
528 | DIMENSION, CHARS and ISO-FINAL-CHAR but the different | |
529 | DIRECTION, we must update the entry REVERSE-CHARSET of both | |
530 | charsets. If there's no such charset, the value of the entry | |
531 | is set to nil. */ | |
532 | int i; | |
533 | ||
513ee442 | 534 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
535 | if (!NILP (CHARSET_TABLE_ENTRY (i))) |
536 | { | |
537 | if (CHARSET_DIMENSION (i) == XINT (dimension) | |
538 | && CHARSET_CHARS (i) == XINT (chars) | |
539 | && CHARSET_ISO_FINAL_CHAR (i) == XINT (iso_final_char) | |
540 | && CHARSET_DIRECTION (i) != XINT (direction)) | |
541 | { | |
542 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
543 | = make_number (i); | |
544 | CHARSET_TABLE_INFO (i, CHARSET_REVERSE_CHARSET_IDX) = charset_id; | |
545 | break; | |
546 | } | |
547 | } | |
513ee442 | 548 | if (i > MAX_CHARSET) |
4ed46869 KH |
549 | /* No such a charset. */ |
550 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
551 | = make_number (-1); | |
552 | } | |
553 | ||
554 | if (charset != CHARSET_ASCII | |
555 | && charset < MIN_CHARSET_PRIVATE_DIMENSION1) | |
556 | { | |
4ed46869 KH |
557 | width_by_char_head[leading_code_base] = XINT (width); |
558 | ||
559 | /* Update table emacs_code_class. */ | |
560 | emacs_code_class[charset] = (bytes == 2 | |
561 | ? EMACS_leading_code_2 | |
562 | : (bytes == 3 | |
563 | ? EMACS_leading_code_3 | |
564 | : EMACS_leading_code_4)); | |
565 | } | |
566 | ||
567 | /* Update table iso_charset_table. */ | |
568 | if (ISO_CHARSET_TABLE (dimension, chars, iso_final_char) < 0) | |
569 | ISO_CHARSET_TABLE (dimension, chars, iso_final_char) = charset; | |
570 | } | |
571 | ||
572 | #ifdef emacs | |
573 | ||
574 | /* Return charset id of CHARSET_SYMBOL, or return -1 if CHARSET_SYMBOL | |
575 | is invalid. */ | |
576 | int | |
577 | get_charset_id (charset_symbol) | |
578 | Lisp_Object charset_symbol; | |
579 | { | |
580 | Lisp_Object val; | |
581 | int charset; | |
582 | ||
583 | return ((SYMBOLP (charset_symbol) | |
584 | && (val = Fget (charset_symbol, Qcharset), VECTORP (val)) | |
585 | && (charset = XINT (XVECTOR (val)->contents[CHARSET_ID_IDX]), | |
586 | CHARSET_VALID_P (charset))) | |
587 | ? charset : -1); | |
588 | } | |
589 | ||
590 | /* Return an identification number for a new private charset of | |
591 | DIMENSION and WIDTH. If there's no more room for the new charset, | |
592 | return 0. */ | |
593 | Lisp_Object | |
594 | get_new_private_charset_id (dimension, width) | |
595 | int dimension, width; | |
596 | { | |
597 | int charset, from, to; | |
598 | ||
599 | if (dimension == 1) | |
600 | { | |
601 | if (width == 1) | |
602 | from = LEADING_CODE_EXT_11, to = LEADING_CODE_EXT_12; | |
603 | else | |
604 | from = LEADING_CODE_EXT_12, to = LEADING_CODE_EXT_21; | |
605 | } | |
606 | else | |
607 | { | |
608 | if (width == 1) | |
609 | from = LEADING_CODE_EXT_21, to = LEADING_CODE_EXT_22; | |
610 | else | |
b0e3cf2b | 611 | from = LEADING_CODE_EXT_22, to = LEADING_CODE_EXT_MAX + 1; |
4ed46869 KH |
612 | } |
613 | ||
614 | for (charset = from; charset < to; charset++) | |
615 | if (!CHARSET_DEFINED_P (charset)) break; | |
616 | ||
617 | return make_number (charset < to ? charset : 0); | |
618 | } | |
619 | ||
620 | DEFUN ("define-charset", Fdefine_charset, Sdefine_charset, 3, 3, 0, | |
621 | "Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR.\n\ | |
23d2a7f1 | 622 | If CHARSET-ID is nil, it is decided automatically, which means CHARSET is\n\ |
4ed46869 KH |
623 | treated as a private charset.\n\ |
624 | INFO-VECTOR is a vector of the format:\n\ | |
625 | [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE\n\ | |
626 | SHORT-NAME LONG-NAME DESCRIPTION]\n\ | |
627 | The meanings of each elements is as follows:\n\ | |
628 | DIMENSION (integer) is the number of bytes to represent a character: 1 or 2.\n\ | |
629 | CHARS (integer) is the number of characters in a dimension: 94 or 96.\n\ | |
630 | WIDTH (integer) is the number of columns a character in the charset\n\ | |
631 | occupies on the screen: one of 0, 1, and 2.\n\ | |
632 | \n\ | |
633 | DIRECTION (integer) is the rendering direction of characters in the\n\ | |
277576f6 KH |
634 | charset when rendering. If 0, render from left to right, else\n\ |
635 | render from right to left.\n\ | |
4ed46869 KH |
636 | \n\ |
637 | ISO-FINAL-CHAR (character) is the final character of the\n\ | |
638 | corresponding ISO 2022 charset.\n\ | |
639 | \n\ | |
640 | ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked\n\ | |
641 | while encoding to variants of ISO 2022 coding system, one of the\n\ | |
642 | following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).\n\ | |
643 | \n\ | |
644 | SHORT-NAME (string) is the short name to refer to the charset.\n\ | |
645 | \n\ | |
646 | LONG-NAME (string) is the long name to refer to the charset.\n\ | |
647 | \n\ | |
648 | DESCRIPTION (string) is the description string of the charset.") | |
649 | (charset_id, charset_symbol, info_vector) | |
650 | Lisp_Object charset_id, charset_symbol, info_vector; | |
651 | { | |
652 | Lisp_Object *vec; | |
653 | ||
654 | if (!NILP (charset_id)) | |
655 | CHECK_NUMBER (charset_id, 0); | |
656 | CHECK_SYMBOL (charset_symbol, 1); | |
657 | CHECK_VECTOR (info_vector, 2); | |
658 | ||
659 | if (! NILP (charset_id)) | |
660 | { | |
661 | if (! CHARSET_VALID_P (XINT (charset_id))) | |
662 | error ("Invalid CHARSET: %d", XINT (charset_id)); | |
663 | else if (CHARSET_DEFINED_P (XINT (charset_id))) | |
664 | error ("Already defined charset: %d", XINT (charset_id)); | |
665 | } | |
666 | ||
667 | vec = XVECTOR (info_vector)->contents; | |
668 | if (XVECTOR (info_vector)->size != 9 | |
669 | || !INTEGERP (vec[0]) || !(XINT (vec[0]) == 1 || XINT (vec[0]) == 2) | |
670 | || !INTEGERP (vec[1]) || !(XINT (vec[1]) == 94 || XINT (vec[1]) == 96) | |
671 | || !INTEGERP (vec[2]) || !(XINT (vec[2]) == 1 || XINT (vec[2]) == 2) | |
672 | || !INTEGERP (vec[3]) || !(XINT (vec[3]) == 0 || XINT (vec[3]) == 1) | |
673 | || !INTEGERP (vec[4]) || !(XINT (vec[4]) >= '0' && XINT (vec[4]) <= '~') | |
674 | || !INTEGERP (vec[5]) || !(XINT (vec[5]) == 0 || XINT (vec[5]) == 1) | |
675 | || !STRINGP (vec[6]) | |
676 | || !STRINGP (vec[7]) | |
677 | || !STRINGP (vec[8])) | |
678 | error ("Invalid info-vector argument for defining charset %s", | |
679 | XSYMBOL (charset_symbol)->name->data); | |
680 | ||
681 | if (NILP (charset_id)) | |
682 | { | |
683 | charset_id = get_new_private_charset_id (XINT (vec[0]), XINT (vec[2])); | |
684 | if (XINT (charset_id) == 0) | |
685 | error ("There's no room for a new private charset %s", | |
686 | XSYMBOL (charset_symbol)->name->data); | |
687 | } | |
688 | ||
689 | update_charset_table (charset_id, vec[0], vec[1], vec[2], vec[3], | |
690 | vec[4], vec[5], vec[6], vec[7], vec[8]); | |
6dc0722d | 691 | Fput (charset_symbol, Qcharset, CHARSET_TABLE_ENTRY (XINT (charset_id))); |
4ed46869 KH |
692 | CHARSET_SYMBOL (XINT (charset_id)) = charset_symbol; |
693 | Vcharset_list = Fcons (charset_symbol, Vcharset_list); | |
694 | return Qnil; | |
695 | } | |
696 | ||
8a73a704 KH |
697 | DEFUN ("generic-character-list", Fgeneric_character_list, |
698 | Sgeneric_character_list, 0, 0, 0, | |
699 | "Return a list of all possible generic characters.\n\ | |
700 | It includes a generic character for a charset not yet defined.") | |
701 | () | |
702 | { | |
703 | return Vgeneric_character_list; | |
704 | } | |
705 | ||
3fac5a51 KH |
706 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
707 | Sget_unused_iso_final_char, 2, 2, 0, | |
708 | "Return an unsed ISO's final char for a charset of DIMENISION and CHARS.\n\ | |
709 | DIMENSION is the number of bytes to represent a character: 1 or 2.\n\ | |
710 | CHARS is the number of characters in a dimension: 94 or 96.\n\ | |
711 | \n\ | |
712 | This final char is for private use, thus the range is `0' (48) .. `?' (63).\n\ | |
713 | If there's no unused final char for the specified kind of charset,\n\ | |
714 | return nil.") | |
715 | (dimension, chars) | |
716 | Lisp_Object dimension, chars; | |
717 | { | |
718 | int final_char; | |
719 | ||
720 | CHECK_NUMBER (dimension, 0); | |
721 | CHECK_NUMBER (chars, 1); | |
722 | if (XINT (dimension) != 1 && XINT (dimension) != 2) | |
723 | error ("Invalid charset dimension %d, it should be 1 or 2", | |
724 | XINT (dimension)); | |
725 | if (XINT (chars) != 94 && XINT (chars) != 96) | |
726 | error ("Invalid charset chars %d, it should be 94 or 96", | |
727 | XINT (chars)); | |
728 | for (final_char = '0'; final_char <= '?'; final_char++) | |
729 | { | |
730 | if (ISO_CHARSET_TABLE (dimension, chars, make_number (final_char)) < 0) | |
731 | break; | |
732 | } | |
733 | return (final_char <= '?' ? make_number (final_char) : Qnil); | |
734 | } | |
735 | ||
4ed46869 KH |
736 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, |
737 | 4, 4, 0, | |
738 | "Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.\n\ | |
739 | CHARSET should be defined by `defined-charset' in advance.") | |
740 | (dimension, chars, final_char, charset_symbol) | |
741 | Lisp_Object dimension, chars, final_char, charset_symbol; | |
742 | { | |
743 | int charset; | |
744 | ||
745 | CHECK_NUMBER (dimension, 0); | |
746 | CHECK_NUMBER (chars, 1); | |
747 | CHECK_NUMBER (final_char, 2); | |
748 | CHECK_SYMBOL (charset_symbol, 3); | |
749 | ||
750 | if (XINT (dimension) != 1 && XINT (dimension) != 2) | |
751 | error ("Invalid DIMENSION %d, it should be 1 or 2", XINT (dimension)); | |
752 | if (XINT (chars) != 94 && XINT (chars) != 96) | |
753 | error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars)); | |
754 | if (XINT (final_char) < '0' || XFASTINT (final_char) > '~') | |
755 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars)); | |
756 | if ((charset = get_charset_id (charset_symbol)) < 0) | |
757 | error ("Invalid charset %s", XSYMBOL (charset_symbol)->name->data); | |
758 | ||
759 | ISO_CHARSET_TABLE (dimension, chars, final_char) = charset; | |
760 | return Qnil; | |
761 | } | |
762 | ||
763 | /* Return number of different charsets in STR of length LEN. In | |
764 | addition, for each found charset N, CHARSETS[N] is set 1. The | |
a29e3b1b | 765 | caller should allocate CHARSETS (MAX_CHARSET + 1 elements) in advance. |
1d67c29b KH |
766 | It may lookup a translation table TABLE if supplied. |
767 | ||
768 | If CMPCHARP is nonzero and some composite character is found, | |
769 | CHARSETS[128] is also set 1 and the returned number is incremented | |
0282eb69 KH |
770 | by 1. |
771 | ||
772 | If MULTIBYTE is zero, do not check multibyte characters, i.e. if | |
773 | any ASCII codes (7-bit) are found, CHARSET[0] is set to 1, if any | |
774 | 8-bit codes are found CHARSET[1] is set to 1. */ | |
4ed46869 KH |
775 | |
776 | int | |
0282eb69 | 777 | find_charset_in_str (str, len, charsets, table, cmpcharp, multibyte) |
028d516b KH |
778 | unsigned char *str; |
779 | int len, *charsets; | |
23d2a7f1 | 780 | Lisp_Object table; |
1d67c29b | 781 | int cmpcharp; |
0282eb69 | 782 | int multibyte; |
4ed46869 | 783 | { |
733eafd8 | 784 | register int num = 0, c; |
4ed46869 | 785 | |
0282eb69 KH |
786 | if (! multibyte) |
787 | { | |
788 | unsigned char *endp = str + len; | |
789 | int maskbits = 0; | |
790 | ||
791 | while (str < endp && maskbits != 3) | |
792 | maskbits |= (*str++ < 0x80 ? 1 : 2); | |
793 | if (maskbits & 1) | |
794 | { | |
795 | charsets[0] = 1; | |
796 | num++; | |
797 | } | |
798 | if (maskbits & 2) | |
799 | { | |
800 | charsets[1] = 1; | |
801 | num++; | |
802 | } | |
803 | return num; | |
804 | } | |
805 | ||
23d2a7f1 KH |
806 | if (! CHAR_TABLE_P (table)) |
807 | table = Qnil; | |
808 | ||
4ed46869 KH |
809 | while (len > 0) |
810 | { | |
05505664 | 811 | int bytes, charset; |
733eafd8 | 812 | c = *str; |
23d2a7f1 | 813 | |
733eafd8 | 814 | if (c == LEADING_CODE_COMPOSITION) |
05505664 | 815 | { |
733eafd8 KH |
816 | int cmpchar_id = str_cmpchar_id (str, len); |
817 | GLYPH *glyph; | |
05505664 | 818 | |
1d67c29b | 819 | if (cmpchar_id >= 0) |
05505664 | 820 | { |
020da460 | 821 | struct cmpchar_info *cmp_p = cmpchar_table[cmpchar_id]; |
733eafd8 KH |
822 | int i; |
823 | ||
020da460 | 824 | for (i = 0; i < cmp_p->glyph_len; i++) |
733eafd8 | 825 | { |
020da460 | 826 | c = cmp_p->glyph[i]; |
733eafd8 KH |
827 | if (!NILP (table)) |
828 | { | |
b4e9dd77 | 829 | if ((c = translate_char (table, c, 0, 0, 0)) < 0) |
020da460 | 830 | c = cmp_p->glyph[i]; |
733eafd8 KH |
831 | } |
832 | if ((charset = CHAR_CHARSET (c)) < 0) | |
833 | charset = CHARSET_ASCII; | |
834 | if (!charsets[charset]) | |
835 | { | |
836 | charsets[charset] = 1; | |
837 | num += 1; | |
838 | } | |
839 | } | |
020da460 KH |
840 | str += cmp_p->len; |
841 | len -= cmp_p->len; | |
842 | if (cmpcharp && !charsets[CHARSET_COMPOSITION]) | |
843 | { | |
844 | charsets[CHARSET_COMPOSITION] = 1; | |
845 | num += 1; | |
846 | } | |
733eafd8 | 847 | continue; |
05505664 | 848 | } |
05505664 | 849 | |
0282eb69 | 850 | charset = 1; /* This leads to `unknown' charset. */ |
733eafd8 KH |
851 | bytes = 1; |
852 | } | |
23d2a7f1 KH |
853 | else |
854 | { | |
733eafd8 KH |
855 | c = STRING_CHAR_AND_LENGTH (str, len, bytes); |
856 | if (! NILP (table)) | |
857 | { | |
b4e9dd77 | 858 | int c1 = translate_char (table, c, 0, 0, 0); |
733eafd8 KH |
859 | if (c1 >= 0) |
860 | c = c1; | |
861 | } | |
862 | charset = CHAR_CHARSET (c); | |
23d2a7f1 | 863 | } |
4ed46869 KH |
864 | |
865 | if (!charsets[charset]) | |
866 | { | |
867 | charsets[charset] = 1; | |
868 | num += 1; | |
869 | } | |
870 | str += bytes; | |
871 | len -= bytes; | |
872 | } | |
873 | return num; | |
874 | } | |
875 | ||
876 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, | |
23d2a7f1 | 877 | 2, 3, 0, |
4ed46869 | 878 | "Return a list of charsets in the region between BEG and END.\n\ |
23d2a7f1 | 879 | BEG and END are buffer positions.\n\ |
020da460 KH |
880 | If the region contains any composite character,\n\ |
881 | `composition' is included in the returned list.\n\ | |
0282eb69 KH |
882 | Optional arg TABLE if non-nil is a translation table to look up.\n\ |
883 | \n\ | |
884 | If the region contains invalid multiybte characters,\n\ | |
38f02ede | 885 | `unknown' is included in the returned list.\n\ |
0282eb69 KH |
886 | \n\ |
887 | If the current buffer is unibyte, the returned list contains\n\ | |
888 | `ascii' if any 7-bit characters are found,\n\ | |
889 | and `unknown' if any 8-bit characters are found.") | |
23d2a7f1 KH |
890 | (beg, end, table) |
891 | Lisp_Object beg, end, table; | |
4ed46869 | 892 | { |
028d516b | 893 | int charsets[MAX_CHARSET + 1]; |
6ae1f27e | 894 | int from, from_byte, to, stop, stop_byte, i; |
4ed46869 | 895 | Lisp_Object val; |
0282eb69 KH |
896 | int undefined; |
897 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
4ed46869 KH |
898 | |
899 | validate_region (&beg, &end); | |
900 | from = XFASTINT (beg); | |
901 | stop = to = XFASTINT (end); | |
6ae1f27e | 902 | |
4ed46869 | 903 | if (from < GPT && GPT < to) |
6ae1f27e RS |
904 | { |
905 | stop = GPT; | |
906 | stop_byte = GPT_BYTE; | |
907 | } | |
908 | else | |
909 | stop_byte = CHAR_TO_BYTE (stop); | |
910 | ||
911 | from_byte = CHAR_TO_BYTE (from); | |
912 | ||
028d516b | 913 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
4ed46869 KH |
914 | while (1) |
915 | { | |
6ae1f27e | 916 | find_charset_in_str (BYTE_POS_ADDR (from_byte), stop_byte - from_byte, |
0282eb69 | 917 | charsets, table, 1, multibyte); |
4ed46869 | 918 | if (stop < to) |
6ae1f27e RS |
919 | { |
920 | from = stop, from_byte = stop_byte; | |
921 | stop = to, stop_byte = CHAR_TO_BYTE (stop); | |
922 | } | |
4ed46869 KH |
923 | else |
924 | break; | |
925 | } | |
6ae1f27e | 926 | |
4ed46869 | 927 | val = Qnil; |
0282eb69 KH |
928 | undefined = 0; |
929 | for (i = (multibyte ? MAX_CHARSET : 1); i >= 0; i--) | |
4ed46869 | 930 | if (charsets[i]) |
0282eb69 KH |
931 | { |
932 | if (CHARSET_DEFINED_P (i) || i == CHARSET_COMPOSITION) | |
933 | val = Fcons (CHARSET_SYMBOL (i), val); | |
934 | else | |
935 | undefined = 1; | |
936 | } | |
937 | if (undefined) | |
938 | val = Fcons (Qunknown, val); | |
4ed46869 KH |
939 | return val; |
940 | } | |
941 | ||
942 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, | |
23d2a7f1 KH |
943 | 1, 2, 0, |
944 | "Return a list of charsets in STR.\n\ | |
020da460 KH |
945 | If the string contains any composite characters,\n\ |
946 | `composition' is included in the returned list.\n\ | |
0282eb69 KH |
947 | Optional arg TABLE if non-nil is a translation table to look up.\n\ |
948 | \n\ | |
949 | If the region contains invalid multiybte characters,\n\ | |
950 | `unknown' is included in the returned list.\n\ | |
951 | \n\ | |
952 | If STR is unibyte, the returned list contains\n\ | |
953 | `ascii' if any 7-bit characters are found,\n\ | |
954 | and `unknown' if any 8-bit characters are found.") | |
23d2a7f1 KH |
955 | (str, table) |
956 | Lisp_Object str, table; | |
4ed46869 | 957 | { |
a29e3b1b | 958 | int charsets[MAX_CHARSET + 1]; |
4ed46869 KH |
959 | int i; |
960 | Lisp_Object val; | |
0282eb69 KH |
961 | int undefined; |
962 | int multibyte; | |
4ed46869 KH |
963 | |
964 | CHECK_STRING (str, 0); | |
0282eb69 | 965 | multibyte = STRING_MULTIBYTE (str); |
87b089ad | 966 | |
a29e3b1b | 967 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
fc932ac6 | 968 | find_charset_in_str (XSTRING (str)->data, STRING_BYTES (XSTRING (str)), |
0282eb69 | 969 | charsets, table, 1, multibyte); |
4ed46869 | 970 | val = Qnil; |
0282eb69 KH |
971 | undefined = 0; |
972 | for (i = (multibyte ? MAX_CHARSET : 1); i >= 0; i--) | |
4ed46869 | 973 | if (charsets[i]) |
0282eb69 KH |
974 | { |
975 | if (CHARSET_DEFINED_P (i) || i == CHARSET_COMPOSITION) | |
976 | val = Fcons (CHARSET_SYMBOL (i), val); | |
977 | else | |
978 | undefined = 1; | |
979 | } | |
980 | if (undefined) | |
981 | val = Fcons (Qunknown, val); | |
4ed46869 KH |
982 | return val; |
983 | } | |
984 | \f | |
985 | DEFUN ("make-char-internal", Fmake_char_internal, Smake_char_internal, 1, 3, 0, | |
513ee442 | 986 | "") |
4ed46869 KH |
987 | (charset, code1, code2) |
988 | Lisp_Object charset, code1, code2; | |
989 | { | |
990 | CHECK_NUMBER (charset, 0); | |
991 | ||
992 | if (NILP (code1)) | |
993 | XSETFASTINT (code1, 0); | |
994 | else | |
995 | CHECK_NUMBER (code1, 1); | |
996 | if (NILP (code2)) | |
997 | XSETFASTINT (code2, 0); | |
998 | else | |
999 | CHECK_NUMBER (code2, 2); | |
1000 | ||
1001 | if (!CHARSET_DEFINED_P (XINT (charset))) | |
1002 | error ("Invalid charset: %d", XINT (charset)); | |
1003 | ||
1004 | return make_number (MAKE_CHAR (XINT (charset), XINT (code1), XINT (code2))); | |
1005 | } | |
1006 | ||
1007 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, | |
0282eb69 KH |
1008 | "Return list of charset and one or two position-codes of CHAR.\n\ |
1009 | If CHAR is invalid as a character code,\n\ | |
1010 | return a list of symbol `unknown' and CHAR.") | |
4ed46869 KH |
1011 | (ch) |
1012 | Lisp_Object ch; | |
1013 | { | |
1014 | Lisp_Object val; | |
0282eb69 | 1015 | int c, charset, c1, c2; |
4ed46869 KH |
1016 | |
1017 | CHECK_NUMBER (ch, 0); | |
0282eb69 KH |
1018 | c = XFASTINT (ch); |
1019 | if (!CHAR_VALID_P (c, 1)) | |
1020 | return Fcons (Qunknown, Fcons (ch, Qnil)); | |
4ed46869 | 1021 | SPLIT_CHAR (XFASTINT (ch), charset, c1, c2); |
6dc0722d | 1022 | return (c2 >= 0 |
4ed46869 KH |
1023 | ? Fcons (CHARSET_SYMBOL (charset), |
1024 | Fcons (make_number (c1), Fcons (make_number (c2), Qnil))) | |
1025 | : Fcons (CHARSET_SYMBOL (charset), Fcons (make_number (c1), Qnil))); | |
1026 | } | |
1027 | ||
1028 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0, | |
1029 | "Return charset of CHAR.") | |
1030 | (ch) | |
1031 | Lisp_Object ch; | |
1032 | { | |
1033 | CHECK_NUMBER (ch, 0); | |
1034 | ||
1035 | return CHARSET_SYMBOL (CHAR_CHARSET (XINT (ch))); | |
1036 | } | |
1037 | ||
90d7b74e KH |
1038 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
1039 | "Return charset of a character in current buffer at position POS.\n\ | |
e6e114f2 KH |
1040 | If POS is nil, it defauls to the current point.\n\ |
1041 | If POS is out of range, the value is nil.") | |
90d7b74e KH |
1042 | (pos) |
1043 | Lisp_Object pos; | |
1044 | { | |
1045 | register int pos_byte, c, charset; | |
1046 | register unsigned char *p; | |
1047 | ||
1048 | if (NILP (pos)) | |
1049 | pos_byte = PT_BYTE; | |
1050 | else if (MARKERP (pos)) | |
e6e114f2 KH |
1051 | { |
1052 | pos_byte = marker_byte_position (pos); | |
1053 | if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE) | |
1054 | return Qnil; | |
1055 | } | |
90d7b74e KH |
1056 | else |
1057 | { | |
1058 | CHECK_NUMBER (pos, 0); | |
e6e114f2 KH |
1059 | if (XINT (pos) < BEGV || XINT (pos) >= ZV) |
1060 | return Qnil; | |
90d7b74e KH |
1061 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
1062 | } | |
1063 | p = BYTE_POS_ADDR (pos_byte); | |
1064 | c = STRING_CHAR (p, Z_BYTE - pos_byte); | |
1065 | charset = CHAR_CHARSET (c); | |
1066 | return CHARSET_SYMBOL (charset); | |
1067 | } | |
1068 | ||
4ed46869 | 1069 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
2b71bb78 KH |
1070 | "Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.\n\ |
1071 | \n\ | |
1072 | ISO 2022's designation sequence (escape sequence) distinguishes charsets\n\ | |
1073 | by their DIMENSION, CHARS, and FINAL-CHAR,\n\ | |
1074 | where as Emacs distinguishes them by charset symbol.\n\ | |
1075 | See the documentation of the function `charset-info' for the meanings of\n\ | |
1076 | DIMENSION, CHARS, and FINAL-CHAR.") | |
4ed46869 KH |
1077 | (dimension, chars, final_char) |
1078 | Lisp_Object dimension, chars, final_char; | |
1079 | { | |
1080 | int charset; | |
1081 | ||
1082 | CHECK_NUMBER (dimension, 0); | |
1083 | CHECK_NUMBER (chars, 1); | |
1084 | CHECK_NUMBER (final_char, 2); | |
1085 | ||
1086 | if ((charset = ISO_CHARSET_TABLE (dimension, chars, final_char)) < 0) | |
1087 | return Qnil; | |
1088 | return CHARSET_SYMBOL (charset); | |
1089 | } | |
1090 | ||
9d3d8cba KH |
1091 | /* If GENERICP is nonzero, return nonzero iff C is a valid normal or |
1092 | generic character. If GENERICP is zero, return nonzero iff C is a | |
1093 | valid normal character. Do not call this function directly, | |
1094 | instead use macro CHAR_VALID_P. */ | |
1095 | int | |
1096 | char_valid_p (c, genericp) | |
1097 | int c, genericp; | |
1098 | { | |
1099 | int charset, c1, c2; | |
1100 | ||
1101 | if (c < 0) | |
1102 | return 0; | |
1103 | if (SINGLE_BYTE_CHAR_P (c)) | |
1104 | return 1; | |
1105 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); | |
32278fd5 | 1106 | if (charset != CHARSET_COMPOSITION && !CHARSET_DEFINED_P (charset)) |
9d3d8cba KH |
1107 | return 0; |
1108 | return (c < MIN_CHAR_COMPOSITION | |
1109 | ? ((c & CHAR_FIELD1_MASK) /* i.e. dimension of C is two. */ | |
1110 | ? (genericp && c1 == 0 && c2 == 0 | |
1111 | || c1 >= 32 && c2 >= 32) | |
1112 | : (genericp && c1 == 0 | |
1113 | || c1 >= 32)) | |
1114 | : c < MIN_CHAR_COMPOSITION + n_cmpchars); | |
1115 | } | |
1116 | ||
1117 | DEFUN ("char-valid-p", Fchar_valid_p, Schar_valid_p, 1, 2, 0, | |
a9d02884 DL |
1118 | "Return t if OBJECT is a valid normal character.\n\ |
1119 | If optional arg GENERICP is non-nil, also return t if OBJECT is\n\ | |
9d3d8cba KH |
1120 | a valid generic character.") |
1121 | (object, genericp) | |
1122 | Lisp_Object object, genericp; | |
1123 | { | |
1124 | if (! NATNUMP (object)) | |
1125 | return Qnil; | |
1126 | return (CHAR_VALID_P (XFASTINT (object), !NILP (genericp)) ? Qt : Qnil); | |
1127 | } | |
1128 | ||
d2665018 KH |
1129 | DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte, |
1130 | Sunibyte_char_to_multibyte, 1, 1, 0, | |
1131 | "Convert the unibyte character CH to multibyte character.\n\ | |
537efd8d | 1132 | The conversion is done based on `nonascii-translation-table' (which see)\n\ |
340b8d58 | 1133 | or `nonascii-insert-offset' (which see).") |
d2665018 KH |
1134 | (ch) |
1135 | Lisp_Object ch; | |
1136 | { | |
1137 | int c; | |
1138 | ||
1139 | CHECK_NUMBER (ch, 0); | |
1140 | c = XINT (ch); | |
1141 | if (c < 0 || c >= 0400) | |
1142 | error ("Invalid unibyte character: %d", c); | |
1143 | c = unibyte_char_to_multibyte (c); | |
1144 | if (c < 0) | |
1145 | error ("Can't convert to multibyte character: %d", XINT (ch)); | |
1146 | return make_number (c); | |
1147 | } | |
1148 | ||
1bcc1567 RS |
1149 | DEFUN ("multibyte-char-to-unibyte", Fmultibyte_char_to_unibyte, |
1150 | Smultibyte_char_to_unibyte, 1, 1, 0, | |
1151 | "Convert the multibyte character CH to unibyte character.\n\ | |
1152 | The conversion is done based on `nonascii-translation-table' (which see)\n\ | |
1153 | or `nonascii-insert-offset' (which see).") | |
1154 | (ch) | |
1155 | Lisp_Object ch; | |
1156 | { | |
1157 | int c; | |
1158 | ||
1159 | CHECK_NUMBER (ch, 0); | |
1160 | c = XINT (ch); | |
1161 | if (c < 0) | |
1162 | error ("Invalid multibyte character: %d", c); | |
1163 | c = multibyte_char_to_unibyte (c, Qnil); | |
1164 | if (c < 0) | |
1165 | error ("Can't convert to unibyte character: %d", XINT (ch)); | |
1166 | return make_number (c); | |
1167 | } | |
1168 | ||
4ed46869 | 1169 | DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0, |
f78643ef | 1170 | "Return 1 regardless of the argument CHAR.\n\ |
60022cb7 | 1171 | This is now an obsolete function. We keep it just for backward compatibility.") |
4ed46869 KH |
1172 | (ch) |
1173 | Lisp_Object ch; | |
1174 | { | |
1175 | Lisp_Object val; | |
4ed46869 KH |
1176 | |
1177 | CHECK_NUMBER (ch, 0); | |
9b6a601f KH |
1178 | return make_number (1); |
1179 | } | |
1180 | ||
1181 | /* Return how many bytes C will occupy in a multibyte buffer. | |
1182 | Don't call this function directly, instead use macro CHAR_BYTES. */ | |
1183 | int | |
1184 | char_bytes (c) | |
1185 | int c; | |
1186 | { | |
1187 | int bytes; | |
1188 | ||
8ac5a9cc KH |
1189 | if (SINGLE_BYTE_CHAR_P (c) || (c & ~GLYPH_MASK_CHAR)) |
1190 | return 1; | |
1191 | ||
9b6a601f | 1192 | if (COMPOSITE_CHAR_P (c)) |
4ed46869 | 1193 | { |
9b6a601f | 1194 | unsigned int id = COMPOSITE_CHAR_ID (c); |
4ed46869 KH |
1195 | |
1196 | bytes = (id < n_cmpchars ? cmpchar_table[id]->len : 1); | |
1197 | } | |
1198 | else | |
1199 | { | |
9b6a601f | 1200 | int charset = CHAR_CHARSET (c); |
4ed46869 KH |
1201 | |
1202 | bytes = CHARSET_DEFINED_P (charset) ? CHARSET_BYTES (charset) : 1; | |
1203 | } | |
1204 | ||
60022cb7 | 1205 | return bytes; |
4ed46869 KH |
1206 | } |
1207 | ||
1208 | /* Return the width of character of which multi-byte form starts with | |
1209 | C. The width is measured by how many columns occupied on the | |
1210 | screen when displayed in the current buffer. */ | |
1211 | ||
1212 | #define ONE_BYTE_CHAR_WIDTH(c) \ | |
1213 | (c < 0x20 \ | |
1214 | ? (c == '\t' \ | |
53316e55 | 1215 | ? XFASTINT (current_buffer->tab_width) \ |
4ed46869 KH |
1216 | : (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2))) \ |
1217 | : (c < 0x7f \ | |
1218 | ? 1 \ | |
1219 | : (c == 0x7F \ | |
1220 | ? (NILP (current_buffer->ctl_arrow) ? 4 : 2) \ | |
1221 | : ((! NILP (current_buffer->enable_multibyte_characters) \ | |
1222 | && BASE_LEADING_CODE_P (c)) \ | |
1223 | ? WIDTH_BY_CHAR_HEAD (c) \ | |
b4e9dd77 | 1224 | : 4)))) |
4ed46869 KH |
1225 | |
1226 | DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0, | |
1227 | "Return width of CHAR when displayed in the current buffer.\n\ | |
1228 | The width is measured by how many columns it occupies on the screen.") | |
1229 | (ch) | |
1230 | Lisp_Object ch; | |
1231 | { | |
859f2b3c | 1232 | Lisp_Object val, disp; |
4ed46869 | 1233 | int c; |
51c4025f | 1234 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 KH |
1235 | |
1236 | CHECK_NUMBER (ch, 0); | |
1237 | ||
859f2b3c RS |
1238 | c = XINT (ch); |
1239 | ||
1240 | /* Get the way the display table would display it. */ | |
51c4025f | 1241 | disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil; |
859f2b3c RS |
1242 | |
1243 | if (VECTORP (disp)) | |
1244 | XSETINT (val, XVECTOR (disp)->size); | |
1245 | else if (SINGLE_BYTE_CHAR_P (c)) | |
1246 | XSETINT (val, ONE_BYTE_CHAR_WIDTH (c)); | |
4ed46869 KH |
1247 | else if (COMPOSITE_CHAR_P (c)) |
1248 | { | |
1249 | int id = COMPOSITE_CHAR_ID (XFASTINT (ch)); | |
0282eb69 | 1250 | XSETFASTINT (val, (id < n_cmpchars ? cmpchar_table[id]->width : 1)); |
4ed46869 KH |
1251 | } |
1252 | else | |
1253 | { | |
1254 | int charset = CHAR_CHARSET (c); | |
1255 | ||
1256 | XSETFASTINT (val, CHARSET_WIDTH (charset)); | |
1257 | } | |
1258 | return val; | |
1259 | } | |
1260 | ||
1261 | /* Return width of string STR of length LEN when displayed in the | |
1262 | current buffer. The width is measured by how many columns it | |
1263 | occupies on the screen. */ | |
859f2b3c | 1264 | |
4ed46869 KH |
1265 | int |
1266 | strwidth (str, len) | |
1267 | unsigned char *str; | |
1268 | int len; | |
1269 | { | |
1270 | unsigned char *endp = str + len; | |
1271 | int width = 0; | |
c4a4e28f | 1272 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 | 1273 | |
859f2b3c RS |
1274 | while (str < endp) |
1275 | { | |
1276 | if (*str == LEADING_CODE_COMPOSITION) | |
1277 | { | |
1278 | int id = str_cmpchar_id (str, endp - str); | |
1279 | ||
1280 | if (id < 0) | |
1281 | { | |
1282 | width += 4; | |
1283 | str++; | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | width += cmpchar_table[id]->width; | |
1288 | str += cmpchar_table[id]->len; | |
1289 | } | |
1290 | } | |
1291 | else | |
1292 | { | |
1293 | Lisp_Object disp; | |
e515b0a9 KH |
1294 | int thislen; |
1295 | int c = STRING_CHAR_AND_LENGTH (str, endp - str, thislen); | |
859f2b3c RS |
1296 | |
1297 | /* Get the way the display table would display it. */ | |
acc35c36 RS |
1298 | if (dp) |
1299 | disp = DISP_CHAR_VECTOR (dp, c); | |
1300 | else | |
1301 | disp = Qnil; | |
859f2b3c RS |
1302 | |
1303 | if (VECTORP (disp)) | |
e515b0a9 | 1304 | width += XVECTOR (disp)->size; |
859f2b3c | 1305 | else |
e515b0a9 | 1306 | width += ONE_BYTE_CHAR_WIDTH (*str); |
859f2b3c | 1307 | |
e515b0a9 | 1308 | str += thislen; |
859f2b3c RS |
1309 | } |
1310 | } | |
4ed46869 KH |
1311 | return width; |
1312 | } | |
1313 | ||
1314 | DEFUN ("string-width", Fstring_width, Sstring_width, 1, 1, 0, | |
1315 | "Return width of STRING when displayed in the current buffer.\n\ | |
1316 | Width is measured by how many columns it occupies on the screen.\n\ | |
046b1f03 RS |
1317 | When calculating width of a multibyte character in STRING,\n\ |
1318 | only the base leading-code is considered; the validity of\n\ | |
1319 | the following bytes is not checked.") | |
4ed46869 KH |
1320 | (str) |
1321 | Lisp_Object str; | |
1322 | { | |
1323 | Lisp_Object val; | |
1324 | ||
1325 | CHECK_STRING (str, 0); | |
fc932ac6 RS |
1326 | XSETFASTINT (val, strwidth (XSTRING (str)->data, |
1327 | STRING_BYTES (XSTRING (str)))); | |
4ed46869 KH |
1328 | return val; |
1329 | } | |
1330 | ||
1331 | DEFUN ("char-direction", Fchar_direction, Schar_direction, 1, 1, 0, | |
1332 | "Return the direction of CHAR.\n\ | |
1333 | The returned value is 0 for left-to-right and 1 for right-to-left.") | |
1334 | (ch) | |
1335 | Lisp_Object ch; | |
1336 | { | |
1337 | int charset; | |
1338 | ||
1339 | CHECK_NUMBER (ch, 0); | |
1340 | charset = CHAR_CHARSET (XFASTINT (ch)); | |
1341 | if (!CHARSET_DEFINED_P (charset)) | |
93bcb785 | 1342 | invalid_character (XINT (ch)); |
4ed46869 KH |
1343 | return CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX); |
1344 | } | |
1345 | ||
af4fecb4 | 1346 | DEFUN ("chars-in-region", Fchars_in_region, Schars_in_region, 2, 2, 0, |
6ae1f27e | 1347 | "Return number of characters between BEG and END.") |
046b1f03 RS |
1348 | (beg, end) |
1349 | Lisp_Object beg, end; | |
1350 | { | |
6ae1f27e | 1351 | int from, to; |
046b1f03 | 1352 | |
17e7ef1b RS |
1353 | CHECK_NUMBER_COERCE_MARKER (beg, 0); |
1354 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
1355 | ||
046b1f03 | 1356 | from = min (XFASTINT (beg), XFASTINT (end)); |
a8a35e61 | 1357 | to = max (XFASTINT (beg), XFASTINT (end)); |
046b1f03 | 1358 | |
a8c21066 | 1359 | return make_number (to - from); |
6ae1f27e | 1360 | } |
9036eb45 | 1361 | |
87b089ad RS |
1362 | /* Return the number of characters in the NBYTES bytes at PTR. |
1363 | This works by looking at the contents and checking for multibyte sequences. | |
1364 | However, if the current buffer has enable-multibyte-characters = nil, | |
1365 | we treat each byte as a character. */ | |
1366 | ||
6ae1f27e RS |
1367 | int |
1368 | chars_in_text (ptr, nbytes) | |
1369 | unsigned char *ptr; | |
1370 | int nbytes; | |
1371 | { | |
93bcb785 | 1372 | unsigned char *endp, c; |
6ae1f27e | 1373 | int chars; |
046b1f03 | 1374 | |
87b089ad RS |
1375 | /* current_buffer is null at early stages of Emacs initialization. */ |
1376 | if (current_buffer == 0 | |
1377 | || NILP (current_buffer->enable_multibyte_characters)) | |
6ae1f27e | 1378 | return nbytes; |
a8a35e61 | 1379 | |
6ae1f27e RS |
1380 | endp = ptr + nbytes; |
1381 | chars = 0; | |
046b1f03 | 1382 | |
6ae1f27e RS |
1383 | while (ptr < endp) |
1384 | { | |
93bcb785 KH |
1385 | c = *ptr++; |
1386 | ||
1387 | if (BASE_LEADING_CODE_P (c)) | |
1388 | while (ptr < endp && ! CHAR_HEAD_P (*ptr)) ptr++; | |
046b1f03 RS |
1389 | chars++; |
1390 | } | |
1391 | ||
6ae1f27e | 1392 | return chars; |
046b1f03 RS |
1393 | } |
1394 | ||
87b089ad RS |
1395 | /* Return the number of characters in the NBYTES bytes at PTR. |
1396 | This works by looking at the contents and checking for multibyte sequences. | |
1397 | It ignores enable-multibyte-characters. */ | |
1398 | ||
1399 | int | |
1400 | multibyte_chars_in_text (ptr, nbytes) | |
1401 | unsigned char *ptr; | |
1402 | int nbytes; | |
1403 | { | |
93bcb785 | 1404 | unsigned char *endp, c; |
87b089ad RS |
1405 | int chars; |
1406 | ||
1407 | endp = ptr + nbytes; | |
1408 | chars = 0; | |
1409 | ||
1410 | while (ptr < endp) | |
1411 | { | |
93bcb785 KH |
1412 | c = *ptr++; |
1413 | ||
1414 | if (BASE_LEADING_CODE_P (c)) | |
1415 | while (ptr < endp && ! CHAR_HEAD_P (*ptr)) ptr++; | |
87b089ad RS |
1416 | chars++; |
1417 | } | |
1418 | ||
1419 | return chars; | |
1420 | } | |
1421 | ||
1422 | DEFUN ("string", Fstring, Sstring, 1, MANY, 0, | |
4ed46869 | 1423 | "Concatenate all the argument characters and make the result a string.") |
53316e55 KH |
1424 | (n, args) |
1425 | int n; | |
4ed46869 KH |
1426 | Lisp_Object *args; |
1427 | { | |
53316e55 | 1428 | int i; |
4ed46869 | 1429 | unsigned char *buf |
bd4c6dd0 | 1430 | = (unsigned char *) alloca (MAX_LENGTH_OF_MULTI_BYTE_FORM * n); |
4ed46869 KH |
1431 | unsigned char *p = buf; |
1432 | Lisp_Object val; | |
1433 | ||
1434 | for (i = 0; i < n; i++) | |
1435 | { | |
1436 | int c, len; | |
1437 | unsigned char *str; | |
1438 | ||
1439 | if (!INTEGERP (args[i])) | |
b0e3cf2b | 1440 | CHECK_NUMBER (args[i], 0); |
4ed46869 KH |
1441 | c = XINT (args[i]); |
1442 | len = CHAR_STRING (c, p, str); | |
1443 | if (p != str) | |
1444 | /* C is a composite character. */ | |
1445 | bcopy (str, p, len); | |
1446 | p += len; | |
1447 | } | |
1448 | ||
020da460 KH |
1449 | /* Here, we can't use make_string_from_bytes because of byte |
1450 | combining problem. */ | |
1451 | val = make_string (buf, p - buf); | |
4ed46869 KH |
1452 | return val; |
1453 | } | |
1454 | ||
1455 | #endif /* emacs */ | |
1456 | \f | |
1457 | /*** Composite characters staffs ***/ | |
1458 | ||
1459 | /* Each composite character is identified by CMPCHAR-ID which is | |
1460 | assigned when Emacs needs the character code of the composite | |
1461 | character (e.g. when displaying it on the screen). See the | |
1462 | document "GENERAL NOTE on COMPOSITE CHARACTER" in `charset.h' how a | |
1463 | composite character is represented in Emacs. */ | |
1464 | ||
1465 | /* If `static' is defined, it means that it is defined to null string. */ | |
1466 | #ifndef static | |
1467 | /* The following function is copied from lread.c. */ | |
1468 | static int | |
1469 | hash_string (ptr, len) | |
1470 | unsigned char *ptr; | |
1471 | int len; | |
1472 | { | |
1473 | register unsigned char *p = ptr; | |
1474 | register unsigned char *end = p + len; | |
1475 | register unsigned char c; | |
1476 | register int hash = 0; | |
1477 | ||
1478 | while (p != end) | |
1479 | { | |
1480 | c = *p++; | |
1481 | if (c >= 0140) c -= 40; | |
1482 | hash = ((hash<<3) + (hash>>28) + c); | |
1483 | } | |
1484 | return hash & 07777777777; | |
1485 | } | |
1486 | #endif | |
1487 | ||
4ed46869 KH |
1488 | #define CMPCHAR_HASH_TABLE_SIZE 0xFFF |
1489 | ||
1490 | static int *cmpchar_hash_table[CMPCHAR_HASH_TABLE_SIZE]; | |
1491 | ||
1492 | /* Each element of `cmpchar_hash_table' is a pointer to an array of | |
1493 | integer, where the 1st element is the size of the array, the 2nd | |
1494 | element is how many elements are actually used in the array, and | |
1495 | the remaining elements are CMPCHAR-IDs of composite characters of | |
1496 | the same hash value. */ | |
1497 | #define CMPCHAR_HASH_SIZE(table) table[0] | |
1498 | #define CMPCHAR_HASH_USED(table) table[1] | |
1499 | #define CMPCHAR_HASH_CMPCHAR_ID(table, i) table[i] | |
1500 | ||
1501 | /* Return CMPCHAR-ID of the composite character in STR of the length | |
1502 | LEN. If the composite character has not yet been registered, | |
1503 | register it in `cmpchar_table' and assign new CMPCHAR-ID. This | |
1504 | is the sole function for assigning CMPCHAR-ID. */ | |
1505 | int | |
1506 | str_cmpchar_id (str, len) | |
8867de67 | 1507 | const unsigned char *str; |
4ed46869 KH |
1508 | int len; |
1509 | { | |
1510 | int hash_idx, *hashp; | |
1511 | unsigned char *buf; | |
1512 | int embedded_rule; /* 1 if composition rule is embedded. */ | |
1513 | int chars; /* number of components. */ | |
1514 | int i; | |
1515 | struct cmpchar_info *cmpcharp; | |
1516 | ||
4ed46869 KH |
1517 | /* The second byte 0xFF means compostion rule is embedded. */ |
1518 | embedded_rule = (str[1] == 0xFF); | |
1519 | ||
1520 | /* At first, get the actual length of the composite character. */ | |
1521 | { | |
8867de67 | 1522 | const unsigned char *p, *endp = str + 1, *lastp = str + len; |
4ed46869 KH |
1523 | int bytes; |
1524 | ||
6ae1f27e | 1525 | while (endp < lastp && ! CHAR_HEAD_P (*endp)) endp++; |
93bcb785 KH |
1526 | if (endp - str < 5) |
1527 | /* Any composite char have at least 5-byte length. */ | |
1528 | return -1; | |
1529 | ||
4ed46869 | 1530 | chars = 0; |
93bcb785 | 1531 | p = str + 1; |
4ed46869 KH |
1532 | while (p < endp) |
1533 | { | |
9b4d1fe6 KH |
1534 | if (embedded_rule) |
1535 | { | |
1536 | p++; | |
1537 | if (p >= endp) | |
1538 | return -1; | |
1539 | } | |
4ed46869 | 1540 | /* No need of checking if *P is 0xA0 because |
93bcb785 KH |
1541 | BYTES_BY_CHAR_HEAD (0x80) surely returns 2. */ |
1542 | p += BYTES_BY_CHAR_HEAD (*p - 0x20); | |
4ed46869 KH |
1543 | chars++; |
1544 | } | |
93bcb785 KH |
1545 | if (p > endp || chars < 2 || chars > MAX_COMPONENT_COUNT) |
1546 | /* Invalid components. */ | |
4ed46869 | 1547 | return -1; |
93bcb785 | 1548 | len = p - str; |
4ed46869 KH |
1549 | } |
1550 | hash_idx = hash_string (str, len) % CMPCHAR_HASH_TABLE_SIZE; | |
1551 | hashp = cmpchar_hash_table[hash_idx]; | |
1552 | ||
1553 | /* Then, look into the hash table. */ | |
1554 | if (hashp != NULL) | |
1555 | /* Find the correct one among composite characters of the same | |
1556 | hash value. */ | |
1557 | for (i = 2; i < CMPCHAR_HASH_USED (hashp); i++) | |
1558 | { | |
1559 | cmpcharp = cmpchar_table[CMPCHAR_HASH_CMPCHAR_ID (hashp, i)]; | |
1560 | if (len == cmpcharp->len | |
1561 | && ! bcmp (str, cmpcharp->data, len)) | |
1562 | return CMPCHAR_HASH_CMPCHAR_ID (hashp, i); | |
1563 | } | |
1564 | ||
1565 | /* We have to register the composite character in cmpchar_table. */ | |
0282eb69 | 1566 | if (n_cmpchars >= (CHAR_FIELD2_MASK | CHAR_FIELD3_MASK)) |
513ee442 KH |
1567 | /* No, we have no more room for a new composite character. */ |
1568 | return -1; | |
1569 | ||
4ed46869 KH |
1570 | /* Make the entry in hash table. */ |
1571 | if (hashp == NULL) | |
1572 | { | |
1573 | /* Make a table for 8 composite characters initially. */ | |
1574 | hashp = (cmpchar_hash_table[hash_idx] | |
1575 | = (int *) xmalloc (sizeof (int) * (2 + 8))); | |
1576 | CMPCHAR_HASH_SIZE (hashp) = 10; | |
1577 | CMPCHAR_HASH_USED (hashp) = 2; | |
1578 | } | |
1579 | else if (CMPCHAR_HASH_USED (hashp) >= CMPCHAR_HASH_SIZE (hashp)) | |
1580 | { | |
1581 | CMPCHAR_HASH_SIZE (hashp) += 8; | |
1582 | hashp = (cmpchar_hash_table[hash_idx] | |
1583 | = (int *) xrealloc (hashp, | |
1584 | sizeof (int) * CMPCHAR_HASH_SIZE (hashp))); | |
1585 | } | |
1586 | CMPCHAR_HASH_CMPCHAR_ID (hashp, CMPCHAR_HASH_USED (hashp)) = n_cmpchars; | |
1587 | CMPCHAR_HASH_USED (hashp)++; | |
1588 | ||
1589 | /* Set information of the composite character in cmpchar_table. */ | |
1590 | if (cmpchar_table_size == 0) | |
1591 | { | |
1592 | /* This is the first composite character to be registered. */ | |
1593 | cmpchar_table_size = 256; | |
1594 | cmpchar_table | |
1595 | = (struct cmpchar_info **) xmalloc (sizeof (cmpchar_table[0]) | |
1596 | * cmpchar_table_size); | |
1597 | } | |
1598 | else if (cmpchar_table_size <= n_cmpchars) | |
1599 | { | |
1600 | cmpchar_table_size += 256; | |
1601 | cmpchar_table | |
1602 | = (struct cmpchar_info **) xrealloc (cmpchar_table, | |
1603 | sizeof (cmpchar_table[0]) | |
1604 | * cmpchar_table_size); | |
1605 | } | |
1606 | ||
1607 | cmpcharp = (struct cmpchar_info *) xmalloc (sizeof (struct cmpchar_info)); | |
1608 | ||
1609 | cmpcharp->len = len; | |
1610 | cmpcharp->data = (unsigned char *) xmalloc (len + 1); | |
1611 | bcopy (str, cmpcharp->data, len); | |
1612 | cmpcharp->data[len] = 0; | |
1613 | cmpcharp->glyph_len = chars; | |
1614 | cmpcharp->glyph = (GLYPH *) xmalloc (sizeof (GLYPH) * chars); | |
1615 | if (embedded_rule) | |
1616 | { | |
1617 | cmpcharp->cmp_rule = (unsigned char *) xmalloc (chars); | |
1618 | cmpcharp->col_offset = (float *) xmalloc (sizeof (float) * chars); | |
1619 | } | |
1620 | else | |
1621 | { | |
1622 | cmpcharp->cmp_rule = NULL; | |
1623 | cmpcharp->col_offset = NULL; | |
1624 | } | |
1625 | ||
1626 | /* Setup GLYPH data and composition rules (if any) so as not to make | |
1627 | them every time on displaying. */ | |
1628 | { | |
1629 | unsigned char *bufp; | |
1630 | int width; | |
1631 | float leftmost = 0.0, rightmost = 1.0; | |
1632 | ||
1633 | if (embedded_rule) | |
1634 | /* At first, col_offset[N] is set to relative to col_offset[0]. */ | |
1635 | cmpcharp->col_offset[0] = 0; | |
1636 | ||
1637 | for (i = 0, bufp = cmpcharp->data + 1; i < chars; i++) | |
1638 | { | |
1639 | if (embedded_rule) | |
1640 | cmpcharp->cmp_rule[i] = *bufp++; | |
1641 | ||
1642 | if (*bufp == 0xA0) /* This is an ASCII character. */ | |
1643 | { | |
1644 | cmpcharp->glyph[i] = FAST_MAKE_GLYPH ((*++bufp & 0x7F), 0); | |
1645 | width = 1; | |
1646 | bufp++; | |
1647 | } | |
1648 | else /* Multibyte character. */ | |
1649 | { | |
1650 | /* Make `bufp' point normal multi-byte form temporally. */ | |
1651 | *bufp -= 0x20; | |
1652 | cmpcharp->glyph[i] | |
537efd8d | 1653 | = FAST_MAKE_GLYPH (string_to_non_ascii_char (bufp, 4, 0, 0), 0); |
4ed46869 KH |
1654 | width = WIDTH_BY_CHAR_HEAD (*bufp); |
1655 | *bufp += 0x20; | |
1656 | bufp += BYTES_BY_CHAR_HEAD (*bufp - 0x20); | |
1657 | } | |
1658 | ||
1659 | if (embedded_rule && i > 0) | |
1660 | { | |
1661 | /* Reference points (global_ref and new_ref) are | |
1662 | encoded as below: | |
1663 | ||
1664 | 0--1--2 -- ascent | |
1665 | | | | |
1666 | | | | |
1667 | | 4 -+--- center | |
1668 | -- 3 5 -- baseline | |
1669 | | | | |
1670 | 6--7--8 -- descent | |
1671 | ||
1672 | Now, we calculate the column offset of the new glyph | |
1673 | from the left edge of the first glyph. This can avoid | |
1674 | the same calculation everytime displaying this | |
1675 | composite character. */ | |
1676 | ||
1677 | /* Reference points of global glyph and new glyph. */ | |
1678 | int global_ref = (cmpcharp->cmp_rule[i] - 0xA0) / 9; | |
1679 | int new_ref = (cmpcharp->cmp_rule[i] - 0xA0) % 9; | |
1680 | /* Column offset relative to the first glyph. */ | |
1681 | float left = (leftmost | |
1682 | + (global_ref % 3) * (rightmost - leftmost) / 2.0 | |
1683 | - (new_ref % 3) * width / 2.0); | |
1684 | ||
1685 | cmpcharp->col_offset[i] = left; | |
1686 | if (left < leftmost) | |
1687 | leftmost = left; | |
1688 | if (left + width > rightmost) | |
1689 | rightmost = left + width; | |
1690 | } | |
1691 | else | |
1692 | { | |
1693 | if (width > rightmost) | |
1694 | rightmost = width; | |
1695 | } | |
1696 | } | |
1697 | if (embedded_rule) | |
1698 | { | |
1699 | /* Now col_offset[N] are relative to the left edge of the | |
1700 | first component. Make them relative to the left edge of | |
1701 | overall glyph. */ | |
1702 | for (i = 0; i < chars; i++) | |
1703 | cmpcharp->col_offset[i] -= leftmost; | |
1704 | /* Make rightmost holds width of overall glyph. */ | |
1705 | rightmost -= leftmost; | |
1706 | } | |
1707 | ||
1708 | cmpcharp->width = rightmost; | |
1709 | if (cmpcharp->width < rightmost) | |
1710 | /* To get a ceiling integer value. */ | |
1711 | cmpcharp->width++; | |
1712 | } | |
1713 | ||
1714 | cmpchar_table[n_cmpchars] = cmpcharp; | |
1715 | ||
1716 | return n_cmpchars++; | |
1717 | } | |
1718 | ||
de54b0d5 KH |
1719 | /* Return the Nth element of the composite character C. If NOERROR is |
1720 | nonzero, return 0 on error condition (C is an invalid composite | |
1721 | charcter, or N is out of range). */ | |
4ed46869 | 1722 | int |
de54b0d5 KH |
1723 | cmpchar_component (c, n, noerror) |
1724 | int c, n, noerror; | |
4ed46869 KH |
1725 | { |
1726 | int id = COMPOSITE_CHAR_ID (c); | |
1727 | ||
de54b0d5 KH |
1728 | if (id < 0 || id >= n_cmpchars) |
1729 | { | |
1730 | /* C is not a valid composite character. */ | |
1731 | if (noerror) return 0; | |
1732 | error ("Invalid composite character: %d", c) ; | |
1733 | } | |
1734 | if (n >= cmpchar_table[id]->glyph_len) | |
1735 | { | |
1736 | /* No such component. */ | |
1737 | if (noerror) return 0; | |
1738 | args_out_of_range (make_number (c), make_number (n)); | |
1739 | } | |
4ed46869 KH |
1740 | /* No face data is stored in glyph code. */ |
1741 | return ((int) (cmpchar_table[id]->glyph[n])); | |
1742 | } | |
1743 | ||
1744 | DEFUN ("cmpcharp", Fcmpcharp, Scmpcharp, 1, 1, 0, | |
1745 | "T if CHAR is a composite character.") | |
1746 | (ch) | |
1747 | Lisp_Object ch; | |
1748 | { | |
1749 | CHECK_NUMBER (ch, 0); | |
1750 | return (COMPOSITE_CHAR_P (XINT (ch)) ? Qt : Qnil); | |
1751 | } | |
1752 | ||
1753 | DEFUN ("composite-char-component", Fcmpchar_component, Scmpchar_component, | |
1754 | 2, 2, 0, | |
de54b0d5 KH |
1755 | "Return the Nth component character of composite character CHARACTER.") |
1756 | (character, n) | |
1757 | Lisp_Object character, n; | |
4ed46869 | 1758 | { |
de54b0d5 | 1759 | int id; |
4ed46869 KH |
1760 | |
1761 | CHECK_NUMBER (character, 0); | |
de54b0d5 | 1762 | CHECK_NUMBER (n, 1); |
4ed46869 | 1763 | |
de54b0d5 | 1764 | return (make_number (cmpchar_component (XINT (character), XINT (n), 0))); |
4ed46869 KH |
1765 | } |
1766 | ||
1767 | DEFUN ("composite-char-composition-rule", Fcmpchar_cmp_rule, Scmpchar_cmp_rule, | |
1768 | 2, 2, 0, | |
de54b0d5 | 1769 | "Return the Nth composition rule of composite character CHARACTER.\n\ |
55001746 | 1770 | The returned rule is for composing the Nth component\n\ |
de54b0d5 KH |
1771 | on the (N-1)th component.\n\ |
1772 | If CHARACTER should be composed relatively or N is 0, return 255.") | |
55001746 KH |
1773 | (character, n) |
1774 | Lisp_Object character, n; | |
4ed46869 | 1775 | { |
de54b0d5 | 1776 | int id; |
4ed46869 KH |
1777 | |
1778 | CHECK_NUMBER (character, 0); | |
55001746 | 1779 | CHECK_NUMBER (n, 1); |
4ed46869 KH |
1780 | |
1781 | id = COMPOSITE_CHAR_ID (XINT (character)); | |
1782 | if (id < 0 || id >= n_cmpchars) | |
1783 | error ("Invalid composite character: %d", XINT (character)); | |
de54b0d5 | 1784 | if (XINT (n) < 0 || XINT (n) >= cmpchar_table[id]->glyph_len) |
55001746 | 1785 | args_out_of_range (character, n); |
4ed46869 | 1786 | |
de54b0d5 KH |
1787 | return make_number (cmpchar_table[id]->cmp_rule |
1788 | ? cmpchar_table[id]->cmp_rule[XINT (n)] | |
1789 | : 255); | |
4ed46869 KH |
1790 | } |
1791 | ||
1792 | DEFUN ("composite-char-composition-rule-p", Fcmpchar_cmp_rule_p, | |
1793 | Scmpchar_cmp_rule_p, 1, 1, 0, | |
1794 | "Return non-nil if composite character CHARACTER contains a embedded rule.") | |
1795 | (character) | |
1796 | Lisp_Object character; | |
1797 | { | |
1798 | int id; | |
1799 | ||
1800 | CHECK_NUMBER (character, 0); | |
1801 | id = COMPOSITE_CHAR_ID (XINT (character)); | |
1802 | if (id < 0 || id >= n_cmpchars) | |
1803 | error ("Invalid composite character: %d", XINT (character)); | |
1804 | ||
1805 | return (cmpchar_table[id]->cmp_rule ? Qt : Qnil); | |
1806 | } | |
1807 | ||
1808 | DEFUN ("composite-char-component-count", Fcmpchar_cmp_count, | |
1809 | Scmpchar_cmp_count, 1, 1, 0, | |
1810 | "Return number of compoents of composite character CHARACTER.") | |
1811 | (character) | |
1812 | Lisp_Object character; | |
1813 | { | |
1814 | int id; | |
1815 | ||
1816 | CHECK_NUMBER (character, 0); | |
1817 | id = COMPOSITE_CHAR_ID (XINT (character)); | |
1818 | if (id < 0 || id >= n_cmpchars) | |
1819 | error ("Invalid composite character: %d", XINT (character)); | |
1820 | ||
1821 | return (make_number (cmpchar_table[id]->glyph_len)); | |
1822 | } | |
1823 | ||
1824 | DEFUN ("compose-string", Fcompose_string, Scompose_string, | |
1825 | 1, 1, 0, | |
1826 | "Return one char string composed from all characters in STRING.") | |
1827 | (str) | |
1828 | Lisp_Object str; | |
1829 | { | |
1830 | unsigned char buf[MAX_LENGTH_OF_MULTI_BYTE_FORM], *p, *pend, *ptemp; | |
1831 | int len, i; | |
1832 | ||
1833 | CHECK_STRING (str, 0); | |
1834 | ||
1835 | buf[0] = LEADING_CODE_COMPOSITION; | |
1836 | p = XSTRING (str)->data; | |
fc932ac6 | 1837 | pend = p + STRING_BYTES (XSTRING (str)); |
4ed46869 KH |
1838 | i = 1; |
1839 | while (p < pend) | |
1840 | { | |
9b4d1fe6 | 1841 | if (*p < 0x20) /* control code */ |
4ed46869 KH |
1842 | error ("Invalid component character: %d", *p); |
1843 | else if (*p < 0x80) /* ASCII */ | |
1844 | { | |
1845 | if (i + 2 >= MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1846 | error ("Too long string to be composed: %s", XSTRING (str)->data); | |
1847 | /* Prepend an ASCII charset indicator 0xA0, set MSB of the | |
1848 | code itself. */ | |
1849 | buf[i++] = 0xA0; | |
1850 | buf[i++] = *p++ + 0x80; | |
1851 | } | |
1852 | else if (*p == LEADING_CODE_COMPOSITION) /* composite char */ | |
1853 | { | |
1854 | /* Already composed. Eliminate the heading | |
1855 | LEADING_CODE_COMPOSITION, keep the remaining bytes | |
1856 | unchanged. */ | |
1857 | p++; | |
de54b0d5 KH |
1858 | if (*p == 255) |
1859 | error ("Can't compose a rule-based composition character"); | |
4ed46869 | 1860 | ptemp = p; |
6ae1f27e | 1861 | while (! CHAR_HEAD_P (*p)) p++; |
9b4d1fe6 KH |
1862 | if (str_cmpchar_id (ptemp - 1, p - ptemp + 1) < 0) |
1863 | error ("Can't compose an invalid composition character"); | |
4ed46869 KH |
1864 | if (i + (p - ptemp) >= MAX_LENGTH_OF_MULTI_BYTE_FORM) |
1865 | error ("Too long string to be composed: %s", XSTRING (str)->data); | |
1866 | bcopy (ptemp, buf + i, p - ptemp); | |
1867 | i += p - ptemp; | |
1868 | } | |
1869 | else /* multibyte char */ | |
1870 | { | |
1871 | /* Add 0x20 to the base leading-code, keep the remaining | |
1872 | bytes unchanged. */ | |
9b4d1fe6 KH |
1873 | int c = STRING_CHAR_AND_CHAR_LENGTH (p, pend - p, len); |
1874 | ||
1875 | if (len <= 1 || ! CHAR_VALID_P (c, 0)) | |
1876 | error ("Can't compose an invalid character"); | |
4ed46869 KH |
1877 | if (i + len >= MAX_LENGTH_OF_MULTI_BYTE_FORM) |
1878 | error ("Too long string to be composed: %s", XSTRING (str)->data); | |
1879 | bcopy (p, buf + i, len); | |
1880 | buf[i] += 0x20; | |
1881 | p += len, i += len; | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | if (i < 5) | |
1886 | /* STR contains only one character, which can't be composed. */ | |
1887 | error ("Too short string to be composed: %s", XSTRING (str)->data); | |
1888 | ||
27802600 | 1889 | return make_string_from_bytes (buf, 1, i); |
4ed46869 KH |
1890 | } |
1891 | ||
1892 | \f | |
dfcf069d | 1893 | int |
4ed46869 KH |
1894 | charset_id_internal (charset_name) |
1895 | char *charset_name; | |
1896 | { | |
76d7b829 | 1897 | Lisp_Object val; |
4ed46869 | 1898 | |
76d7b829 | 1899 | val= Fget (intern (charset_name), Qcharset); |
4ed46869 KH |
1900 | if (!VECTORP (val)) |
1901 | error ("Charset %s is not defined", charset_name); | |
1902 | ||
1903 | return (XINT (XVECTOR (val)->contents[0])); | |
1904 | } | |
1905 | ||
1906 | DEFUN ("setup-special-charsets", Fsetup_special_charsets, | |
1907 | Ssetup_special_charsets, 0, 0, 0, "Internal use only.") | |
1908 | () | |
1909 | { | |
1910 | charset_latin_iso8859_1 = charset_id_internal ("latin-iso8859-1"); | |
1911 | charset_jisx0208_1978 = charset_id_internal ("japanese-jisx0208-1978"); | |
1912 | charset_jisx0208 = charset_id_internal ("japanese-jisx0208"); | |
1913 | charset_katakana_jisx0201 = charset_id_internal ("katakana-jisx0201"); | |
1914 | charset_latin_jisx0201 = charset_id_internal ("latin-jisx0201"); | |
1915 | charset_big5_1 = charset_id_internal ("chinese-big5-1"); | |
1916 | charset_big5_2 = charset_id_internal ("chinese-big5-2"); | |
1917 | return Qnil; | |
1918 | } | |
1919 | ||
dfcf069d | 1920 | void |
4ed46869 KH |
1921 | init_charset_once () |
1922 | { | |
1923 | int i, j, k; | |
1924 | ||
1925 | staticpro (&Vcharset_table); | |
1926 | staticpro (&Vcharset_symbol_table); | |
8a73a704 | 1927 | staticpro (&Vgeneric_character_list); |
4ed46869 KH |
1928 | |
1929 | /* This has to be done here, before we call Fmake_char_table. */ | |
1930 | Qcharset_table = intern ("charset-table"); | |
1931 | staticpro (&Qcharset_table); | |
1932 | ||
1933 | /* Intern this now in case it isn't already done. | |
1934 | Setting this variable twice is harmless. | |
1935 | But don't staticpro it here--that is done in alloc.c. */ | |
1936 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); | |
1937 | ||
1938 | /* Now we are ready to set up this property, so we can | |
1939 | create the charset table. */ | |
1940 | Fput (Qcharset_table, Qchar_table_extra_slots, make_number (0)); | |
1941 | Vcharset_table = Fmake_char_table (Qcharset_table, Qnil); | |
1942 | ||
0282eb69 KH |
1943 | Qunknown = intern ("unknown"); |
1944 | staticpro (&Qunknown); | |
1945 | Vcharset_symbol_table = Fmake_vector (make_number (MAX_CHARSET + 1), | |
1946 | Qunknown); | |
4ed46869 KH |
1947 | |
1948 | /* Setup tables. */ | |
1949 | for (i = 0; i < 2; i++) | |
1950 | for (j = 0; j < 2; j++) | |
1951 | for (k = 0; k < 128; k++) | |
1952 | iso_charset_table [i][j][k] = -1; | |
1953 | ||
1954 | bzero (cmpchar_hash_table, sizeof cmpchar_hash_table); | |
1955 | cmpchar_table_size = n_cmpchars = 0; | |
1956 | ||
60383934 | 1957 | for (i = 0; i < 256; i++) |
4ed46869 | 1958 | BYTES_BY_CHAR_HEAD (i) = 1; |
6ef23ebb KH |
1959 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; |
1960 | i <= MAX_CHARSET_OFFICIAL_DIMENSION1; i++) | |
1961 | BYTES_BY_CHAR_HEAD (i) = 2; | |
1962 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION2; | |
1963 | i <= MAX_CHARSET_OFFICIAL_DIMENSION2; i++) | |
1964 | BYTES_BY_CHAR_HEAD (i) = 3; | |
4ed46869 KH |
1965 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 3; |
1966 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 3; | |
1967 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 4; | |
1968 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 4; | |
6ef23ebb | 1969 | /* The followings don't reflect the actual bytes, but just to tell |
4ed46869 KH |
1970 | that it is a start of a multibyte character. */ |
1971 | BYTES_BY_CHAR_HEAD (LEADING_CODE_COMPOSITION) = 2; | |
6ef23ebb KH |
1972 | BYTES_BY_CHAR_HEAD (0x9E) = 2; |
1973 | BYTES_BY_CHAR_HEAD (0x9F) = 2; | |
4ed46869 KH |
1974 | |
1975 | for (i = 0; i < 128; i++) | |
1976 | WIDTH_BY_CHAR_HEAD (i) = 1; | |
1977 | for (; i < 256; i++) | |
1978 | WIDTH_BY_CHAR_HEAD (i) = 4; | |
1979 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 1; | |
1980 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 2; | |
1981 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 1; | |
1982 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 2; | |
8a73a704 KH |
1983 | |
1984 | { | |
76d7b829 | 1985 | Lisp_Object val; |
8a73a704 | 1986 | |
76d7b829 | 1987 | val = Qnil; |
8a73a704 KH |
1988 | for (i = 0x81; i < 0x90; i++) |
1989 | val = Fcons (make_number ((i - 0x70) << 7), val); | |
1990 | for (; i < 0x9A; i++) | |
1991 | val = Fcons (make_number ((i - 0x8F) << 14), val); | |
1992 | for (i = 0xA0; i < 0xF0; i++) | |
1993 | val = Fcons (make_number ((i - 0x70) << 7), val); | |
1994 | for (; i < 0xFF; i++) | |
1995 | val = Fcons (make_number ((i - 0xE0) << 14), val); | |
1996 | val = Fcons (make_number (GENERIC_COMPOSITION_CHAR), val); | |
1997 | Vgeneric_character_list = Fnreverse (val); | |
1998 | } | |
bbf12bb3 KH |
1999 | |
2000 | nonascii_insert_offset = 0; | |
2001 | Vnonascii_translation_table = Qnil; | |
4ed46869 KH |
2002 | } |
2003 | ||
2004 | #ifdef emacs | |
2005 | ||
dfcf069d | 2006 | void |
4ed46869 KH |
2007 | syms_of_charset () |
2008 | { | |
2009 | Qascii = intern ("ascii"); | |
2010 | staticpro (&Qascii); | |
2011 | ||
2012 | Qcharset = intern ("charset"); | |
2013 | staticpro (&Qcharset); | |
2014 | ||
2015 | /* Define ASCII charset now. */ | |
2016 | update_charset_table (make_number (CHARSET_ASCII), | |
2017 | make_number (1), make_number (94), | |
2018 | make_number (1), | |
2019 | make_number (0), | |
2020 | make_number ('B'), | |
2021 | make_number (0), | |
2022 | build_string ("ASCII"), | |
2023 | build_string ("ASCII"), | |
2024 | build_string ("ASCII (ISO646 IRV)")); | |
2025 | CHARSET_SYMBOL (CHARSET_ASCII) = Qascii; | |
2026 | Fput (Qascii, Qcharset, CHARSET_TABLE_ENTRY (CHARSET_ASCII)); | |
2027 | ||
2028 | Qcomposition = intern ("composition"); | |
2029 | staticpro (&Qcomposition); | |
2030 | CHARSET_SYMBOL (CHARSET_COMPOSITION) = Qcomposition; | |
2031 | ||
c1a08b4c KH |
2032 | Qauto_fill_chars = intern ("auto-fill-chars"); |
2033 | staticpro (&Qauto_fill_chars); | |
2034 | Fput (Qauto_fill_chars, Qchar_table_extra_slots, make_number (0)); | |
2035 | ||
4ed46869 | 2036 | defsubr (&Sdefine_charset); |
8a73a704 | 2037 | defsubr (&Sgeneric_character_list); |
3fac5a51 | 2038 | defsubr (&Sget_unused_iso_final_char); |
4ed46869 KH |
2039 | defsubr (&Sdeclare_equiv_charset); |
2040 | defsubr (&Sfind_charset_region); | |
2041 | defsubr (&Sfind_charset_string); | |
2042 | defsubr (&Smake_char_internal); | |
2043 | defsubr (&Ssplit_char); | |
2044 | defsubr (&Schar_charset); | |
90d7b74e | 2045 | defsubr (&Scharset_after); |
4ed46869 | 2046 | defsubr (&Siso_charset); |
9d3d8cba | 2047 | defsubr (&Schar_valid_p); |
d2665018 | 2048 | defsubr (&Sunibyte_char_to_multibyte); |
1bcc1567 | 2049 | defsubr (&Smultibyte_char_to_unibyte); |
4ed46869 KH |
2050 | defsubr (&Schar_bytes); |
2051 | defsubr (&Schar_width); | |
2052 | defsubr (&Sstring_width); | |
2053 | defsubr (&Schar_direction); | |
af4fecb4 | 2054 | defsubr (&Schars_in_region); |
87b089ad | 2055 | defsubr (&Sstring); |
4ed46869 KH |
2056 | defsubr (&Scmpcharp); |
2057 | defsubr (&Scmpchar_component); | |
2058 | defsubr (&Scmpchar_cmp_rule); | |
2059 | defsubr (&Scmpchar_cmp_rule_p); | |
2060 | defsubr (&Scmpchar_cmp_count); | |
2061 | defsubr (&Scompose_string); | |
2062 | defsubr (&Ssetup_special_charsets); | |
2063 | ||
2064 | DEFVAR_LISP ("charset-list", &Vcharset_list, | |
2065 | "List of charsets ever defined."); | |
2066 | Vcharset_list = Fcons (Qascii, Qnil); | |
2067 | ||
537efd8d | 2068 | DEFVAR_LISP ("translation-table-vector", &Vtranslation_table_vector, |
b4e9dd77 KH |
2069 | "Vector of cons cell of a symbol and translation table ever defined.\n\ |
2070 | An ID of a translation table is an index of this vector."); | |
537efd8d | 2071 | Vtranslation_table_vector = Fmake_vector (make_number (16), Qnil); |
b0e3cf2b | 2072 | |
4ed46869 KH |
2073 | DEFVAR_INT ("leading-code-composition", &leading_code_composition, |
2074 | "Leading-code of composite characters."); | |
2075 | leading_code_composition = LEADING_CODE_COMPOSITION; | |
2076 | ||
2077 | DEFVAR_INT ("leading-code-private-11", &leading_code_private_11, | |
2078 | "Leading-code of private TYPE9N charset of column-width 1."); | |
2079 | leading_code_private_11 = LEADING_CODE_PRIVATE_11; | |
2080 | ||
2081 | DEFVAR_INT ("leading-code-private-12", &leading_code_private_12, | |
2082 | "Leading-code of private TYPE9N charset of column-width 2."); | |
2083 | leading_code_private_12 = LEADING_CODE_PRIVATE_12; | |
2084 | ||
2085 | DEFVAR_INT ("leading-code-private-21", &leading_code_private_21, | |
2086 | "Leading-code of private TYPE9Nx9N charset of column-width 1."); | |
2087 | leading_code_private_21 = LEADING_CODE_PRIVATE_21; | |
2088 | ||
2089 | DEFVAR_INT ("leading-code-private-22", &leading_code_private_22, | |
2090 | "Leading-code of private TYPE9Nx9N charset of column-width 2."); | |
2091 | leading_code_private_22 = LEADING_CODE_PRIVATE_22; | |
35e623fb RS |
2092 | |
2093 | DEFVAR_INT ("nonascii-insert-offset", &nonascii_insert_offset, | |
d2665018 | 2094 | "Offset for converting non-ASCII unibyte codes 0240...0377 to multibyte.\n\ |
4cf9710d RS |
2095 | This is used for converting unibyte text to multibyte,\n\ |
2096 | and for inserting character codes specified by number.\n\n\ | |
3e8ceaac RS |
2097 | This serves to convert a Latin-1 or similar 8-bit character code\n\ |
2098 | to the corresponding Emacs multibyte character code.\n\ | |
2099 | Typically the value should be (- (make-char CHARSET 0) 128),\n\ | |
2100 | for your choice of character set.\n\ | |
537efd8d | 2101 | If `nonascii-translation-table' is non-nil, it overrides this variable."); |
35e623fb | 2102 | nonascii_insert_offset = 0; |
b0e3cf2b | 2103 | |
b4e9dd77 | 2104 | DEFVAR_LISP ("nonascii-translation-table", &Vnonascii_translation_table, |
537efd8d | 2105 | "Translation table to convert non-ASCII unibyte codes to multibyte.\n\ |
4cf9710d RS |
2106 | This is used for converting unibyte text to multibyte,\n\ |
2107 | and for inserting character codes specified by number.\n\n\ | |
2108 | Conversion is performed only when multibyte characters are enabled,\n\ | |
2109 | and it serves to convert a Latin-1 or similar 8-bit character code\n\ | |
2110 | to the corresponding Emacs character code.\n\n\ | |
da4d65af | 2111 | If this is nil, `nonascii-insert-offset' is used instead.\n\ |
b4e9dd77 KH |
2112 | See also the docstring of `make-translation-table'."); |
2113 | Vnonascii_translation_table = Qnil; | |
4cf9710d | 2114 | |
b0e3cf2b KH |
2115 | DEFVAR_INT ("min-composite-char", &min_composite_char, |
2116 | "Minimum character code of a composite character."); | |
2117 | min_composite_char = MIN_CHAR_COMPOSITION; | |
c1a08b4c KH |
2118 | |
2119 | DEFVAR_LISP ("auto-fill-chars", &Vauto_fill_chars, | |
2120 | "A char-table for characters which invoke auto-filling.\n\ | |
2121 | Such characters has value t in this table."); | |
2122 | Vauto_fill_chars = Fmake_char_table (Qauto_fill_chars, Qnil); | |
60022cb7 AS |
2123 | CHAR_TABLE_SET (Vauto_fill_chars, make_number (' '), Qt); |
2124 | CHAR_TABLE_SET (Vauto_fill_chars, make_number ('\n'), Qt); | |
4ed46869 KH |
2125 | } |
2126 | ||
2127 | #endif /* emacs */ |