Commit | Line | Data |
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0168c3d8 | 1 | /* Basic character support. |
73b0cd50 GM |
2 | |
3 | Copyright (C) 2001-2011 Free Software Foundation, Inc. | |
4 | Copyright (C) 1995, 1997, 1998, 2001 Electrotechnical Laboratory, JAPAN. | |
5 | Licensed to the Free Software Foundation. | |
6 | Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 | |
7 | National Institute of Advanced Industrial Science and Technology (AIST) | |
8 | Registration Number H13PRO009 | |
0168c3d8 KH |
9 | |
10 | This file is part of GNU Emacs. | |
11 | ||
9ec0b715 | 12 | GNU Emacs is free software: you can redistribute it and/or modify |
0168c3d8 | 13 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
14 | the Free Software Foundation, either version 3 of the License, or |
15 | (at your option) any later version. | |
0168c3d8 KH |
16 | |
17 | GNU Emacs is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 23 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
0168c3d8 KH |
24 | |
25 | /* At first, see the document in `character.h' to understand the code | |
26 | in this file. */ | |
27 | ||
28 | #ifdef emacs | |
29 | #include <config.h> | |
30 | #endif | |
31 | ||
32 | #include <stdio.h> | |
33 | ||
34 | #ifdef emacs | |
35 | ||
36 | #include <sys/types.h> | |
d7306fe6 | 37 | #include <setjmp.h> |
0168c3d8 KH |
38 | #include "lisp.h" |
39 | #include "character.h" | |
40 | #include "buffer.h" | |
41 | #include "charset.h" | |
42 | #include "composite.h" | |
43 | #include "disptab.h" | |
44 | ||
45 | #else /* not emacs */ | |
46 | ||
47 | #include "mulelib.h" | |
48 | ||
49 | #endif /* emacs */ | |
50 | ||
51 | Lisp_Object Qcharacterp; | |
52 | ||
955cbe7b | 53 | static Lisp_Object Qauto_fill_chars; |
0168c3d8 | 54 | |
33f91981 | 55 | /* Char-table of information about which character to unify to which |
6f1b43a0 | 56 | Unicode character. Mainly used by the macro MAYBE_UNIFY_CHAR. */ |
0168c3d8 KH |
57 | Lisp_Object Vchar_unify_table; |
58 | ||
8973478b | 59 | /* Variable used locally in the macro FETCH_MULTIBYTE_CHAR. */ |
0168c3d8 | 60 | unsigned char *_fetch_multibyte_char_p; |
0168c3d8 | 61 | |
c57f3328 KH |
62 | static Lisp_Object Qchar_script_table; |
63 | ||
0168c3d8 KH |
64 | \f |
65 | ||
2bde7652 KH |
66 | /* If character code C has modifier masks, reflect them to the |
67 | character code if possible. Return the resulting code. */ | |
68 | ||
69 | int | |
971de7fb | 70 | char_resolve_modifier_mask (int c) |
2bde7652 | 71 | { |
d0363d44 | 72 | /* A non-ASCII character can't reflect modifier bits to the code. */ |
2bde7652 KH |
73 | if (! ASCII_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) |
74 | return c; | |
75 | ||
76 | /* For Meta, Shift, and Control modifiers, we need special care. */ | |
2bde7652 KH |
77 | if (c & CHAR_SHIFT) |
78 | { | |
79 | /* Shift modifier is valid only with [A-Za-z]. */ | |
80 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
81 | c &= ~CHAR_SHIFT; | |
82 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
83 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
03365d0e KH |
84 | /* Shift modifier for control characters and SPC is ignored. */ |
85 | else if ((c & ~CHAR_MODIFIER_MASK) <= 0x20) | |
d0363d44 KH |
86 | c &= ~CHAR_SHIFT; |
87 | } | |
2bde7652 KH |
88 | if (c & CHAR_CTL) |
89 | { | |
90 | /* Simulate the code in lread.c. */ | |
91 | /* Allow `\C- ' and `\C-?'. */ | |
03365d0e KH |
92 | if ((c & 0377) == ' ') |
93 | c &= ~0177 & ~ CHAR_CTL; | |
94 | else if ((c & 0377) == '?') | |
95 | c = 0177 | (c & ~0177 & ~CHAR_CTL); | |
2bde7652 KH |
96 | /* ASCII control chars are made from letters (both cases), |
97 | as well as the non-letters within 0100...0137. */ | |
98 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
99 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
100 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
101 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
102 | } | |
e9c1637d | 103 | #if 0 /* This is outside the scope of this function. (bug#4751) */ |
03365d0e KH |
104 | if (c & CHAR_META) |
105 | { | |
106 | /* Move the meta bit to the right place for a string. */ | |
107 | c = (c & ~CHAR_META) | 0x80; | |
108 | } | |
e9c1637d | 109 | #endif |
2bde7652 KH |
110 | |
111 | return c; | |
112 | } | |
113 | ||
114 | ||
33f91981 KH |
115 | /* Store multibyte form of character C at P. If C has modifier bits, |
116 | handle them appropriately. */ | |
117 | ||
0168c3d8 | 118 | int |
971de7fb | 119 | char_string (unsigned int c, unsigned char *p) |
0168c3d8 KH |
120 | { |
121 | int bytes; | |
122 | ||
e3d8eb8c KH |
123 | if (c & CHAR_MODIFIER_MASK) |
124 | { | |
2bde7652 | 125 | c = (unsigned) char_resolve_modifier_mask ((int) c); |
e3d8eb8c KH |
126 | /* If C still has any modifier bits, just ignore it. */ |
127 | c &= ~CHAR_MODIFIER_MASK; | |
128 | } | |
129 | ||
0168c3d8 KH |
130 | MAYBE_UNIFY_CHAR (c); |
131 | ||
e3d8eb8c | 132 | if (c <= MAX_3_BYTE_CHAR) |
0168c3d8 KH |
133 | { |
134 | bytes = CHAR_STRING (c, p); | |
135 | } | |
136 | else if (c <= MAX_4_BYTE_CHAR) | |
137 | { | |
138 | p[0] = (0xF0 | (c >> 18)); | |
139 | p[1] = (0x80 | ((c >> 12) & 0x3F)); | |
140 | p[2] = (0x80 | ((c >> 6) & 0x3F)); | |
141 | p[3] = (0x80 | (c & 0x3F)); | |
142 | bytes = 4; | |
143 | } | |
e3d8eb8c | 144 | else if (c <= MAX_5_BYTE_CHAR) |
0168c3d8 KH |
145 | { |
146 | p[0] = 0xF8; | |
147 | p[1] = (0x80 | ((c >> 18) & 0x0F)); | |
148 | p[2] = (0x80 | ((c >> 12) & 0x3F)); | |
149 | p[3] = (0x80 | ((c >> 6) & 0x3F)); | |
150 | p[4] = (0x80 | (c & 0x3F)); | |
151 | bytes = 5; | |
152 | } | |
5aa91c9b | 153 | else if (c <= MAX_CHAR) |
e3d8eb8c KH |
154 | { |
155 | c = CHAR_TO_BYTE8 (c); | |
156 | bytes = BYTE8_STRING (c, p); | |
157 | } | |
5aa91c9b | 158 | else |
e6c3da20 | 159 | error ("Invalid character: %x", c); |
1889b238 | 160 | |
0168c3d8 KH |
161 | return bytes; |
162 | } | |
163 | ||
164 | ||
224a3131 | 165 | /* Return a character whose multibyte form is at P. If LEN is not |
33f91981 | 166 | NULL, it must be a pointer to integer. In that case, set *LEN to |
224a3131 | 167 | the byte length of the multibyte form. If ADVANCED is not NULL, it |
33f91981 | 168 | must be a pointer to unsigned char. In that case, set *ADVANCED to |
224a3131 | 169 | the ending address (i.e., the starting address of the next |
33f91981 KH |
170 | character) of the multibyte form. */ |
171 | ||
0168c3d8 | 172 | int |
971de7fb | 173 | string_char (const unsigned char *p, const unsigned char **advanced, int *len) |
0168c3d8 | 174 | { |
1889b238 | 175 | int c; |
15843e6f | 176 | const unsigned char *saved_p = p; |
0168c3d8 KH |
177 | |
178 | if (*p < 0x80 || ! (*p & 0x20) || ! (*p & 0x10)) | |
179 | { | |
180 | c = STRING_CHAR_ADVANCE (p); | |
181 | } | |
182 | else if (! (*p & 0x08)) | |
183 | { | |
184 | c = ((((p)[0] & 0xF) << 18) | |
185 | | (((p)[1] & 0x3F) << 12) | |
186 | | (((p)[2] & 0x3F) << 6) | |
187 | | ((p)[3] & 0x3F)); | |
188 | p += 4; | |
189 | } | |
190 | else | |
191 | { | |
192 | c = ((((p)[1] & 0x3F) << 18) | |
193 | | (((p)[2] & 0x3F) << 12) | |
194 | | (((p)[3] & 0x3F) << 6) | |
195 | | ((p)[4] & 0x3F)); | |
196 | p += 5; | |
197 | } | |
198 | ||
199 | MAYBE_UNIFY_CHAR (c); | |
200 | ||
201 | if (len) | |
202 | *len = p - saved_p; | |
203 | if (advanced) | |
204 | *advanced = p; | |
205 | return c; | |
206 | } | |
207 | ||
208 | ||
224a3131 EZ |
209 | /* Translate character C by translation table TABLE. If no translation is |
210 | found in TABLE, return the untranslated character. If TABLE is a list, | |
211 | elements are char tables. In that case, recursively translate C by all the | |
212 | tables in the list. */ | |
0168c3d8 KH |
213 | |
214 | int | |
971de7fb | 215 | translate_char (Lisp_Object table, int c) |
0168c3d8 | 216 | { |
10453be9 KH |
217 | if (CHAR_TABLE_P (table)) |
218 | { | |
219 | Lisp_Object ch; | |
220 | ||
221 | ch = CHAR_TABLE_REF (table, c); | |
222 | if (CHARACTERP (ch)) | |
223 | c = XINT (ch); | |
224 | } | |
225 | else | |
226 | { | |
227 | for (; CONSP (table); table = XCDR (table)) | |
228 | c = translate_char (XCAR (table), c); | |
229 | } | |
230 | return c; | |
0168c3d8 KH |
231 | } |
232 | ||
2e5db15c | 233 | /* Convert ASCII or 8-bit character C to unibyte. If C is none of |
461c2ab9 | 234 | them, return (C & 0xFF). */ |
0168c3d8 KH |
235 | |
236 | int | |
461c2ab9 | 237 | multibyte_char_to_unibyte (int c) |
0168c3d8 | 238 | { |
2e5db15c KH |
239 | if (c < 0x80) |
240 | return c; | |
b672c5ae KH |
241 | if (CHAR_BYTE8_P (c)) |
242 | return CHAR_TO_BYTE8 (c); | |
2e5db15c | 243 | return (c & 0xFF); |
0168c3d8 KH |
244 | } |
245 | ||
935d5b02 KH |
246 | /* Like multibyte_char_to_unibyte, but return -1 if C is not supported |
247 | by charset_unibyte. */ | |
248 | ||
249 | int | |
971de7fb | 250 | multibyte_char_to_unibyte_safe (int c) |
935d5b02 | 251 | { |
2e5db15c KH |
252 | if (c < 0x80) |
253 | return c; | |
935d5b02 KH |
254 | if (CHAR_BYTE8_P (c)) |
255 | return CHAR_TO_BYTE8 (c); | |
2e5db15c | 256 | return -1; |
935d5b02 | 257 | } |
0168c3d8 KH |
258 | |
259 | DEFUN ("characterp", Fcharacterp, Scharacterp, 1, 2, 0, | |
260 | doc: /* Return non-nil if OBJECT is a character. */) | |
5842a27b | 261 | (Lisp_Object object, Lisp_Object ignore) |
0168c3d8 KH |
262 | { |
263 | return (CHARACTERP (object) ? Qt : Qnil); | |
264 | } | |
265 | ||
266 | DEFUN ("max-char", Fmax_char, Smax_char, 0, 0, 0, | |
267 | doc: /* Return the character of the maximum code. */) | |
5842a27b | 268 | (void) |
0168c3d8 KH |
269 | { |
270 | return make_number (MAX_CHAR); | |
271 | } | |
272 | ||
273 | DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte, | |
274 | Sunibyte_char_to_multibyte, 1, 1, 0, | |
5556875b | 275 | doc: /* Convert the byte CH to multibyte character. */) |
5842a27b | 276 | (Lisp_Object ch) |
0168c3d8 KH |
277 | { |
278 | int c; | |
0168c3d8 KH |
279 | |
280 | CHECK_CHARACTER (ch); | |
281 | c = XFASTINT (ch); | |
2e5db15c KH |
282 | if (c >= 0x100) |
283 | error ("Not a unibyte character: %d", c); | |
4c0354d7 | 284 | MAKE_CHAR_MULTIBYTE (c); |
0168c3d8 KH |
285 | return make_number (c); |
286 | } | |
287 | ||
288 | DEFUN ("multibyte-char-to-unibyte", Fmultibyte_char_to_unibyte, | |
289 | Smultibyte_char_to_unibyte, 1, 1, 0, | |
5556875b SM |
290 | doc: /* Convert the multibyte character CH to a byte. |
291 | If the multibyte character does not represent a byte, return -1. */) | |
5842a27b | 292 | (Lisp_Object ch) |
0168c3d8 | 293 | { |
5556875b | 294 | int cm; |
0168c3d8 KH |
295 | |
296 | CHECK_CHARACTER (ch); | |
5556875b SM |
297 | cm = XFASTINT (ch); |
298 | if (cm < 256) | |
299 | /* Can't distinguish a byte read from a unibyte buffer from | |
300 | a latin1 char, so let's let it slide. */ | |
301 | return ch; | |
302 | else | |
303 | { | |
2afc21f5 | 304 | int cu = CHAR_TO_BYTE_SAFE (cm); |
5556875b SM |
305 | return make_number (cu); |
306 | } | |
0168c3d8 KH |
307 | } |
308 | ||
a7ca3326 | 309 | DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0, |
0168c3d8 KH |
310 | doc: /* Return width of CHAR when displayed in the current buffer. |
311 | The width is measured by how many columns it occupies on the screen. | |
add553ac JB |
312 | Tab is taken to occupy `tab-width' columns. |
313 | usage: (char-width CHAR) */) | |
5842a27b | 314 | (Lisp_Object ch) |
0168c3d8 KH |
315 | { |
316 | Lisp_Object disp; | |
317 | int c, width; | |
318 | struct Lisp_Char_Table *dp = buffer_display_table (); | |
319 | ||
320 | CHECK_CHARACTER (ch); | |
321 | c = XINT (ch); | |
322 | ||
323 | /* Get the way the display table would display it. */ | |
324 | disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil; | |
325 | ||
326 | if (VECTORP (disp)) | |
327 | width = ASIZE (disp); | |
328 | else | |
329 | width = CHAR_WIDTH (c); | |
330 | ||
331 | return make_number (width); | |
332 | } | |
333 | ||
0168c3d8 KH |
334 | /* Return width of string STR of length LEN when displayed in the |
335 | current buffer. The width is measured by how many columns it | |
336 | occupies on the screen. If PRECISION > 0, return the width of | |
337 | longest substring that doesn't exceed PRECISION, and set number of | |
338 | characters and bytes of the substring in *NCHARS and *NBYTES | |
339 | respectively. */ | |
340 | ||
579c18d0 EZ |
341 | EMACS_INT |
342 | c_string_width (const unsigned char *str, EMACS_INT len, int precision, | |
343 | EMACS_INT *nchars, EMACS_INT *nbytes) | |
0168c3d8 | 344 | { |
579c18d0 EZ |
345 | EMACS_INT i = 0, i_byte = 0; |
346 | EMACS_INT width = 0; | |
0168c3d8 KH |
347 | struct Lisp_Char_Table *dp = buffer_display_table (); |
348 | ||
349 | while (i_byte < len) | |
350 | { | |
351 | int bytes, thiswidth; | |
352 | Lisp_Object val; | |
62a6e103 | 353 | int c = STRING_CHAR_AND_LENGTH (str + i_byte, bytes); |
0168c3d8 KH |
354 | |
355 | if (dp) | |
356 | { | |
357 | val = DISP_CHAR_VECTOR (dp, c); | |
358 | if (VECTORP (val)) | |
359 | thiswidth = XVECTOR (val)->size; | |
360 | else | |
361 | thiswidth = CHAR_WIDTH (c); | |
362 | } | |
363 | else | |
364 | { | |
365 | thiswidth = CHAR_WIDTH (c); | |
366 | } | |
367 | ||
368 | if (precision > 0 | |
369 | && (width + thiswidth > precision)) | |
370 | { | |
371 | *nchars = i; | |
372 | *nbytes = i_byte; | |
373 | return width; | |
374 | } | |
375 | i++; | |
376 | i_byte += bytes; | |
377 | width += thiswidth; | |
378 | } | |
379 | ||
380 | if (precision > 0) | |
381 | { | |
382 | *nchars = i; | |
383 | *nbytes = i_byte; | |
384 | } | |
385 | ||
386 | return width; | |
387 | } | |
388 | ||
1889b238 KH |
389 | /* Return width of string STR of length LEN when displayed in the |
390 | current buffer. The width is measured by how many columns it | |
391 | occupies on the screen. */ | |
392 | ||
579c18d0 | 393 | EMACS_INT |
7469ef5d | 394 | strwidth (const char *str, EMACS_INT len) |
1889b238 | 395 | { |
7469ef5d | 396 | return c_string_width ((const unsigned char *) str, len, -1, NULL, NULL); |
1889b238 KH |
397 | } |
398 | ||
0168c3d8 KH |
399 | /* Return width of Lisp string STRING when displayed in the current |
400 | buffer. The width is measured by how many columns it occupies on | |
401 | the screen while paying attention to compositions. If PRECISION > | |
402 | 0, return the width of longest substring that doesn't exceed | |
403 | PRECISION, and set number of characters and bytes of the substring | |
404 | in *NCHARS and *NBYTES respectively. */ | |
405 | ||
579c18d0 EZ |
406 | EMACS_INT |
407 | lisp_string_width (Lisp_Object string, int precision, | |
408 | EMACS_INT *nchars, EMACS_INT *nbytes) | |
0168c3d8 | 409 | { |
579c18d0 | 410 | EMACS_INT len = SCHARS (string); |
0aee65b9 KH |
411 | /* This set multibyte to 0 even if STRING is multibyte when it |
412 | contains only ascii and eight-bit-graphic, but that's | |
413 | intentional. */ | |
414 | int multibyte = len < SBYTES (string); | |
8f924df7 | 415 | unsigned char *str = SDATA (string); |
579c18d0 EZ |
416 | EMACS_INT i = 0, i_byte = 0; |
417 | EMACS_INT width = 0; | |
0168c3d8 KH |
418 | struct Lisp_Char_Table *dp = buffer_display_table (); |
419 | ||
420 | while (i < len) | |
421 | { | |
422 | int chars, bytes, thiswidth; | |
423 | Lisp_Object val; | |
424 | int cmp_id; | |
f4bc0685 | 425 | EMACS_INT ignore, end; |
0168c3d8 KH |
426 | |
427 | if (find_composition (i, -1, &ignore, &end, &val, string) | |
428 | && ((cmp_id = get_composition_id (i, i_byte, end - i, val, string)) | |
429 | >= 0)) | |
430 | { | |
431 | thiswidth = composition_table[cmp_id]->width; | |
432 | chars = end - i; | |
433 | bytes = string_char_to_byte (string, end) - i_byte; | |
434 | } | |
0168c3d8 KH |
435 | else |
436 | { | |
0aee65b9 | 437 | int c; |
0168c3d8 | 438 | |
0aee65b9 | 439 | if (multibyte) |
62a6e103 | 440 | c = STRING_CHAR_AND_LENGTH (str + i_byte, bytes); |
0aee65b9 KH |
441 | else |
442 | c = str[i_byte], bytes = 1; | |
0168c3d8 | 443 | chars = 1; |
0aee65b9 KH |
444 | if (dp) |
445 | { | |
446 | val = DISP_CHAR_VECTOR (dp, c); | |
447 | if (VECTORP (val)) | |
448 | thiswidth = XVECTOR (val)->size; | |
449 | else | |
450 | thiswidth = CHAR_WIDTH (c); | |
451 | } | |
452 | else | |
453 | { | |
454 | thiswidth = CHAR_WIDTH (c); | |
455 | } | |
0168c3d8 KH |
456 | } |
457 | ||
458 | if (precision > 0 | |
459 | && (width + thiswidth > precision)) | |
460 | { | |
461 | *nchars = i; | |
462 | *nbytes = i_byte; | |
463 | return width; | |
464 | } | |
465 | i += chars; | |
466 | i_byte += bytes; | |
467 | width += thiswidth; | |
468 | } | |
469 | ||
470 | if (precision > 0) | |
471 | { | |
472 | *nchars = i; | |
473 | *nbytes = i_byte; | |
474 | } | |
475 | ||
476 | return width; | |
477 | } | |
478 | ||
479 | DEFUN ("string-width", Fstring_width, Sstring_width, 1, 1, 0, | |
480 | doc: /* Return width of STRING when displayed in the current buffer. | |
481 | Width is measured by how many columns it occupies on the screen. | |
482 | When calculating width of a multibyte character in STRING, | |
483 | only the base leading-code is considered; the validity of | |
484 | the following bytes is not checked. Tabs in STRING are always | |
add553ac JB |
485 | taken to occupy `tab-width' columns. |
486 | usage: (string-width STRING) */) | |
5842a27b | 487 | (Lisp_Object str) |
0168c3d8 KH |
488 | { |
489 | Lisp_Object val; | |
490 | ||
491 | CHECK_STRING (str); | |
492 | XSETFASTINT (val, lisp_string_width (str, -1, NULL, NULL)); | |
493 | return val; | |
494 | } | |
495 | ||
0168c3d8 KH |
496 | /* Return the number of characters in the NBYTES bytes at PTR. |
497 | This works by looking at the contents and checking for multibyte | |
498 | sequences while assuming that there's no invalid sequence. | |
499 | However, if the current buffer has enable-multibyte-characters = | |
500 | nil, we treat each byte as a character. */ | |
501 | ||
13818c30 | 502 | EMACS_INT |
971de7fb | 503 | chars_in_text (const unsigned char *ptr, EMACS_INT nbytes) |
0168c3d8 KH |
504 | { |
505 | /* current_buffer is null at early stages of Emacs initialization. */ | |
506 | if (current_buffer == 0 | |
4b4deea2 | 507 | || NILP (BVAR (current_buffer, enable_multibyte_characters))) |
0168c3d8 KH |
508 | return nbytes; |
509 | ||
510 | return multibyte_chars_in_text (ptr, nbytes); | |
511 | } | |
512 | ||
513 | /* Return the number of characters in the NBYTES bytes at PTR. | |
514 | This works by looking at the contents and checking for multibyte | |
515 | sequences while assuming that there's no invalid sequence. It | |
516 | ignores enable-multibyte-characters. */ | |
517 | ||
13818c30 | 518 | EMACS_INT |
971de7fb | 519 | multibyte_chars_in_text (const unsigned char *ptr, EMACS_INT nbytes) |
0168c3d8 | 520 | { |
8f924df7 | 521 | const unsigned char *endp = ptr + nbytes; |
579c18d0 | 522 | EMACS_INT chars = 0; |
0168c3d8 KH |
523 | |
524 | while (ptr < endp) | |
525 | { | |
579c18d0 | 526 | EMACS_INT len = MULTIBYTE_LENGTH (ptr, endp); |
0168c3d8 KH |
527 | |
528 | if (len == 0) | |
529 | abort (); | |
530 | ptr += len; | |
531 | chars++; | |
532 | } | |
533 | ||
534 | return chars; | |
535 | } | |
536 | ||
537 | /* Parse unibyte text at STR of LEN bytes as a multibyte text, count | |
538 | characters and bytes in it, and store them in *NCHARS and *NBYTES | |
539 | respectively. On counting bytes, pay attention to that 8-bit | |
540 | characters not constructing a valid multibyte sequence are | |
541 | represented by 2-byte in a multibyte text. */ | |
542 | ||
543 | void | |
14162469 EZ |
544 | parse_str_as_multibyte (const unsigned char *str, EMACS_INT len, |
545 | EMACS_INT *nchars, EMACS_INT *nbytes) | |
0168c3d8 | 546 | { |
8f924df7 | 547 | const unsigned char *endp = str + len; |
14162469 | 548 | EMACS_INT n, chars = 0, bytes = 0; |
0168c3d8 KH |
549 | |
550 | if (len >= MAX_MULTIBYTE_LENGTH) | |
551 | { | |
8f924df7 | 552 | const unsigned char *adjusted_endp = endp - MAX_MULTIBYTE_LENGTH; |
0168c3d8 KH |
553 | while (str < adjusted_endp) |
554 | { | |
fc9a17bc KH |
555 | if (! CHAR_BYTE8_HEAD_P (*str) |
556 | && (n = MULTIBYTE_LENGTH_NO_CHECK (str)) > 0) | |
0168c3d8 KH |
557 | str += n, bytes += n; |
558 | else | |
559 | str++, bytes += 2; | |
560 | chars++; | |
561 | } | |
562 | } | |
563 | while (str < endp) | |
564 | { | |
fc9a17bc KH |
565 | if (! CHAR_BYTE8_HEAD_P (*str) |
566 | && (n = MULTIBYTE_LENGTH (str, endp)) > 0) | |
0168c3d8 KH |
567 | str += n, bytes += n; |
568 | else | |
569 | str++, bytes += 2; | |
570 | chars++; | |
571 | } | |
572 | ||
573 | *nchars = chars; | |
574 | *nbytes = bytes; | |
575 | return; | |
576 | } | |
577 | ||
578 | /* Arrange unibyte text at STR of NBYTES bytes as a multibyte text. | |
579 | It actually converts only such 8-bit characters that don't contruct | |
580 | a multibyte sequence to multibyte forms of Latin-1 characters. If | |
581 | NCHARS is nonzero, set *NCHARS to the number of characters in the | |
582 | text. It is assured that we can use LEN bytes at STR as a work | |
583 | area and that is enough. Return the number of bytes of the | |
584 | resulting text. */ | |
585 | ||
14162469 EZ |
586 | EMACS_INT |
587 | str_as_multibyte (unsigned char *str, EMACS_INT len, EMACS_INT nbytes, | |
588 | EMACS_INT *nchars) | |
0168c3d8 KH |
589 | { |
590 | unsigned char *p = str, *endp = str + nbytes; | |
591 | unsigned char *to; | |
14162469 | 592 | EMACS_INT chars = 0; |
0168c3d8 KH |
593 | int n; |
594 | ||
595 | if (nbytes >= MAX_MULTIBYTE_LENGTH) | |
596 | { | |
597 | unsigned char *adjusted_endp = endp - MAX_MULTIBYTE_LENGTH; | |
598 | while (p < adjusted_endp | |
fc9a17bc | 599 | && ! CHAR_BYTE8_HEAD_P (*p) |
0168c3d8 KH |
600 | && (n = MULTIBYTE_LENGTH_NO_CHECK (p)) > 0) |
601 | p += n, chars++; | |
602 | } | |
fc9a17bc KH |
603 | while (p < endp |
604 | && ! CHAR_BYTE8_HEAD_P (*p) | |
605 | && (n = MULTIBYTE_LENGTH (p, endp)) > 0) | |
0168c3d8 KH |
606 | p += n, chars++; |
607 | if (nchars) | |
608 | *nchars = chars; | |
609 | if (p == endp) | |
610 | return nbytes; | |
611 | ||
612 | to = p; | |
613 | nbytes = endp - p; | |
614 | endp = str + len; | |
72af86bd | 615 | memmove (endp - nbytes, p, nbytes); |
0168c3d8 KH |
616 | p = endp - nbytes; |
617 | ||
618 | if (nbytes >= MAX_MULTIBYTE_LENGTH) | |
619 | { | |
620 | unsigned char *adjusted_endp = endp - MAX_MULTIBYTE_LENGTH; | |
621 | while (p < adjusted_endp) | |
622 | { | |
fc9a17bc KH |
623 | if (! CHAR_BYTE8_HEAD_P (*p) |
624 | && (n = MULTIBYTE_LENGTH_NO_CHECK (p)) > 0) | |
0168c3d8 KH |
625 | { |
626 | while (n--) | |
627 | *to++ = *p++; | |
628 | } | |
629 | else | |
630 | { | |
631 | int c = *p++; | |
632 | c = BYTE8_TO_CHAR (c); | |
633 | to += CHAR_STRING (c, to); | |
634 | } | |
635 | } | |
636 | chars++; | |
637 | } | |
638 | while (p < endp) | |
639 | { | |
fc9a17bc KH |
640 | if (! CHAR_BYTE8_HEAD_P (*p) |
641 | && (n = MULTIBYTE_LENGTH (p, endp)) > 0) | |
0168c3d8 KH |
642 | { |
643 | while (n--) | |
644 | *to++ = *p++; | |
8f924df7 | 645 | } |
0168c3d8 KH |
646 | else |
647 | { | |
648 | int c = *p++; | |
649 | c = BYTE8_TO_CHAR (c); | |
650 | to += CHAR_STRING (c, to); | |
651 | } | |
652 | chars++; | |
653 | } | |
654 | if (nchars) | |
655 | *nchars = chars; | |
656 | return (to - str); | |
657 | } | |
658 | ||
659 | /* Parse unibyte string at STR of LEN bytes, and return the number of | |
660 | bytes it may ocupy when converted to multibyte string by | |
661 | `str_to_multibyte'. */ | |
662 | ||
14162469 EZ |
663 | EMACS_INT |
664 | parse_str_to_multibyte (const unsigned char *str, EMACS_INT len) | |
0168c3d8 | 665 | { |
eec47d6b | 666 | const unsigned char *endp = str + len; |
14162469 | 667 | EMACS_INT bytes; |
0168c3d8 KH |
668 | |
669 | for (bytes = 0; str < endp; str++) | |
670 | bytes += (*str < 0x80) ? 1 : 2; | |
671 | return bytes; | |
672 | } | |
673 | ||
674 | ||
675 | /* Convert unibyte text at STR of NBYTES bytes to a multibyte text | |
676 | that contains the same single-byte characters. It actually | |
677 | converts all 8-bit characters to multibyte forms. It is assured | |
678 | that we can use LEN bytes at STR as a work area and that is | |
679 | enough. */ | |
680 | ||
14162469 EZ |
681 | EMACS_INT |
682 | str_to_multibyte (unsigned char *str, EMACS_INT len, EMACS_INT bytes) | |
0168c3d8 KH |
683 | { |
684 | unsigned char *p = str, *endp = str + bytes; | |
685 | unsigned char *to; | |
686 | ||
687 | while (p < endp && *p < 0x80) p++; | |
688 | if (p == endp) | |
689 | return bytes; | |
690 | to = p; | |
691 | bytes = endp - p; | |
692 | endp = str + len; | |
72af86bd | 693 | memmove (endp - bytes, p, bytes); |
0168c3d8 | 694 | p = endp - bytes; |
8f924df7 | 695 | while (p < endp) |
0168c3d8 KH |
696 | { |
697 | int c = *p++; | |
698 | ||
699 | if (c >= 0x80) | |
700 | c = BYTE8_TO_CHAR (c); | |
701 | to += CHAR_STRING (c, to); | |
702 | } | |
703 | return (to - str); | |
704 | } | |
705 | ||
706 | /* Arrange multibyte text at STR of LEN bytes as a unibyte text. It | |
707 | actually converts characters in the range 0x80..0xFF to | |
708 | unibyte. */ | |
709 | ||
14162469 EZ |
710 | EMACS_INT |
711 | str_as_unibyte (unsigned char *str, EMACS_INT bytes) | |
0168c3d8 | 712 | { |
15843e6f KH |
713 | const unsigned char *p = str, *endp = str + bytes; |
714 | unsigned char *to; | |
0168c3d8 KH |
715 | int c, len; |
716 | ||
717 | while (p < endp) | |
718 | { | |
719 | c = *p; | |
720 | len = BYTES_BY_CHAR_HEAD (c); | |
721 | if (CHAR_BYTE8_HEAD_P (c)) | |
722 | break; | |
723 | p += len; | |
724 | } | |
15843e6f | 725 | to = str + (p - str); |
8f924df7 | 726 | while (p < endp) |
0168c3d8 KH |
727 | { |
728 | c = *p; | |
729 | len = BYTES_BY_CHAR_HEAD (c); | |
730 | if (CHAR_BYTE8_HEAD_P (c)) | |
731 | { | |
732 | c = STRING_CHAR_ADVANCE (p); | |
733 | *to++ = CHAR_TO_BYTE8 (c); | |
734 | } | |
735 | else | |
736 | { | |
737 | while (len--) *to++ = *p++; | |
738 | } | |
739 | } | |
740 | return (to - str); | |
741 | } | |
742 | ||
4aa40bb8 KH |
743 | /* Convert eight-bit chars in SRC (in multibyte form) to the |
744 | corresponding byte and store in DST. CHARS is the number of | |
745 | characters in SRC. The value is the number of bytes stored in DST. | |
746 | Usually, the value is the same as CHARS, but is less than it if SRC | |
8307f923 | 747 | contains a non-ASCII, non-eight-bit character. If ACCEPT_LATIN_1 |
4aa40bb8 | 748 | is nonzero, a Latin-1 character is accepted and converted to a byte |
f27f70ec KH |
749 | of that character code. |
750 | Note: Currently the arg ACCEPT_LATIN_1 is not used. */ | |
4aa40bb8 KH |
751 | |
752 | EMACS_INT | |
971de7fb | 753 | str_to_unibyte (const unsigned char *src, unsigned char *dst, EMACS_INT chars, int accept_latin_1) |
4aa40bb8 KH |
754 | { |
755 | EMACS_INT i; | |
756 | ||
757 | for (i = 0; i < chars; i++) | |
758 | { | |
759 | int c = STRING_CHAR_ADVANCE (src); | |
760 | ||
761 | if (CHAR_BYTE8_P (c)) | |
762 | c = CHAR_TO_BYTE8 (c); | |
763 | else if (! ASCII_CHAR_P (c) | |
764 | && (! accept_latin_1 || c >= 0x100)) | |
765 | return i; | |
766 | *dst++ = c; | |
767 | } | |
768 | return i; | |
769 | } | |
770 | ||
771 | ||
d0891610 | 772 | static EMACS_INT |
971de7fb | 773 | string_count_byte8 (Lisp_Object string) |
0168c3d8 KH |
774 | { |
775 | int multibyte = STRING_MULTIBYTE (string); | |
14162469 | 776 | EMACS_INT nbytes = SBYTES (string); |
8f924df7 | 777 | unsigned char *p = SDATA (string); |
0168c3d8 | 778 | unsigned char *pend = p + nbytes; |
14162469 | 779 | EMACS_INT count = 0; |
0168c3d8 KH |
780 | int c, len; |
781 | ||
782 | if (multibyte) | |
783 | while (p < pend) | |
784 | { | |
785 | c = *p; | |
786 | len = BYTES_BY_CHAR_HEAD (c); | |
787 | ||
788 | if (CHAR_BYTE8_HEAD_P (c)) | |
789 | count++; | |
790 | p += len; | |
791 | } | |
792 | else | |
793 | while (p < pend) | |
794 | { | |
795 | if (*p++ >= 0x80) | |
796 | count++; | |
797 | } | |
798 | return count; | |
799 | } | |
800 | ||
801 | ||
802 | Lisp_Object | |
971de7fb | 803 | string_escape_byte8 (Lisp_Object string) |
0168c3d8 | 804 | { |
14162469 EZ |
805 | EMACS_INT nchars = SCHARS (string); |
806 | EMACS_INT nbytes = SBYTES (string); | |
0168c3d8 | 807 | int multibyte = STRING_MULTIBYTE (string); |
14162469 | 808 | EMACS_INT byte8_count; |
15843e6f KH |
809 | const unsigned char *src, *src_end; |
810 | unsigned char *dst; | |
0168c3d8 KH |
811 | Lisp_Object val; |
812 | int c, len; | |
813 | ||
814 | if (multibyte && nchars == nbytes) | |
815 | return string; | |
816 | ||
817 | byte8_count = string_count_byte8 (string); | |
818 | ||
819 | if (byte8_count == 0) | |
820 | return string; | |
821 | ||
822 | if (multibyte) | |
14162469 EZ |
823 | { |
824 | if ((MOST_POSITIVE_FIXNUM - nchars) / 3 < byte8_count | |
825 | || (MOST_POSITIVE_FIXNUM - nbytes) / 2 < byte8_count) | |
826 | error ("Maximum string size exceeded"); | |
827 | ||
828 | /* Convert 2-byte sequence of byte8 chars to 4-byte octal. */ | |
829 | val = make_uninit_multibyte_string (nchars + byte8_count * 3, | |
830 | nbytes + byte8_count * 2); | |
831 | } | |
0168c3d8 | 832 | else |
14162469 EZ |
833 | { |
834 | if ((MOST_POSITIVE_FIXNUM - nchars) / 3 < byte8_count) | |
835 | error ("Maximum string size exceeded"); | |
836 | /* Convert 1-byte sequence of byte8 chars to 4-byte octal. */ | |
837 | val = make_uninit_string (nbytes + byte8_count * 3); | |
838 | } | |
0168c3d8 | 839 | |
8f924df7 | 840 | src = SDATA (string); |
0168c3d8 | 841 | src_end = src + nbytes; |
8f924df7 | 842 | dst = SDATA (val); |
0168c3d8 KH |
843 | if (multibyte) |
844 | while (src < src_end) | |
845 | { | |
846 | c = *src; | |
847 | len = BYTES_BY_CHAR_HEAD (c); | |
848 | ||
849 | if (CHAR_BYTE8_HEAD_P (c)) | |
850 | { | |
851 | c = STRING_CHAR_ADVANCE (src); | |
852 | c = CHAR_TO_BYTE8 (c); | |
1889b238 | 853 | sprintf ((char *) dst, "\\%03o", c); |
0168c3d8 KH |
854 | dst += 4; |
855 | } | |
856 | else | |
857 | while (len--) *dst++ = *src++; | |
858 | } | |
859 | else | |
860 | while (src < src_end) | |
861 | { | |
862 | c = *src++; | |
863 | if (c >= 0x80) | |
864 | { | |
1889b238 | 865 | sprintf ((char *) dst, "\\%03o", c); |
0168c3d8 KH |
866 | dst += 4; |
867 | } | |
868 | else | |
869 | *dst++ = c; | |
870 | } | |
871 | return val; | |
872 | } | |
873 | ||
874 | \f | |
a7ca3326 | 875 | DEFUN ("string", Fstring, Sstring, 0, MANY, 0, |
0168c3d8 | 876 | doc: /* |
d2e83296 DL |
877 | Concatenate all the argument characters and make the result a string. |
878 | usage: (string &rest CHARACTERS) */) | |
c5101a77 | 879 | (size_t n, Lisp_Object *args) |
0168c3d8 | 880 | { |
c5101a77 PE |
881 | size_t i; |
882 | int c; | |
754790b6 CY |
883 | unsigned char *buf, *p; |
884 | Lisp_Object str; | |
885 | USE_SAFE_ALLOCA; | |
886 | ||
887 | SAFE_ALLOCA (buf, unsigned char *, MAX_MULTIBYTE_LENGTH * n); | |
888 | p = buf; | |
0168c3d8 KH |
889 | |
890 | for (i = 0; i < n; i++) | |
891 | { | |
892 | CHECK_CHARACTER (args[i]); | |
893 | c = XINT (args[i]); | |
894 | p += CHAR_STRING (c, p); | |
895 | } | |
896 | ||
754790b6 CY |
897 | str = make_string_from_bytes ((char *) buf, n, p - buf); |
898 | SAFE_FREE (); | |
899 | return str; | |
0168c3d8 KH |
900 | } |
901 | ||
70b4969d | 902 | DEFUN ("unibyte-string", Funibyte_string, Sunibyte_string, 0, MANY, 0, |
87d6f965 KH |
903 | doc: /* Concatenate all the argument bytes and make the result a unibyte string. |
904 | usage: (unibyte-string &rest BYTES) */) | |
c5101a77 | 905 | (size_t n, Lisp_Object *args) |
70b4969d | 906 | { |
c5101a77 PE |
907 | size_t i; |
908 | int c; | |
754790b6 CY |
909 | unsigned char *buf, *p; |
910 | Lisp_Object str; | |
911 | USE_SAFE_ALLOCA; | |
912 | ||
913 | SAFE_ALLOCA (buf, unsigned char *, n); | |
914 | p = buf; | |
70b4969d KH |
915 | |
916 | for (i = 0; i < n; i++) | |
917 | { | |
918 | CHECK_NATNUM (args[i]); | |
919 | c = XFASTINT (args[i]); | |
920 | if (c >= 256) | |
921 | args_out_of_range_3 (args[i], make_number (0), make_number (255)); | |
922 | *p++ = c; | |
923 | } | |
924 | ||
754790b6 CY |
925 | str = make_string_from_bytes ((char *) buf, n, p - buf); |
926 | SAFE_FREE (); | |
927 | return str; | |
70b4969d KH |
928 | } |
929 | ||
c73ae4ae | 930 | DEFUN ("char-resolve-modifiers", Fchar_resolve_modifiers, |
d0363d44 KH |
931 | Schar_resolve_modifiers, 1, 1, 0, |
932 | doc: /* Resolve modifiers in the character CHAR. | |
933 | The value is a character with modifiers resolved into the character | |
934 | code. Unresolved modifiers are kept in the value. | |
c73ae4ae | 935 | usage: (char-resolve-modifiers CHAR) */) |
5842a27b | 936 | (Lisp_Object character) |
d0363d44 KH |
937 | { |
938 | int c; | |
939 | ||
940 | CHECK_NUMBER (character); | |
941 | c = XINT (character); | |
942 | return make_number (char_resolve_modifier_mask (c)); | |
943 | } | |
944 | ||
ee107a89 KH |
945 | DEFUN ("get-byte", Fget_byte, Sget_byte, 0, 2, 0, |
946 | doc: /* Return a byte value of a character at point. | |
947 | Optional 1st arg POSITION, if non-nil, is a position of a character to get | |
948 | a byte value. | |
949 | Optional 2nd arg STRING, if non-nil, is a string of which first | |
950 | character is a target to get a byte value. In this case, POSITION, if | |
951 | non-nil, is an index of a target character in the string. | |
952 | ||
953 | If the current buffer (or STRING) is multibyte, and the target | |
954 | character is not ASCII nor 8-bit character, an error is signalled. */) | |
5842a27b | 955 | (Lisp_Object position, Lisp_Object string) |
ee107a89 KH |
956 | { |
957 | int c; | |
958 | EMACS_INT pos; | |
959 | unsigned char *p; | |
960 | ||
961 | if (NILP (string)) | |
962 | { | |
963 | if (NILP (position)) | |
964 | { | |
965 | p = PT_ADDR; | |
4d8e170e | 966 | } |
ee107a89 KH |
967 | else |
968 | { | |
969 | CHECK_NUMBER_COERCE_MARKER (position); | |
970 | if (XINT (position) < BEGV || XINT (position) >= ZV) | |
971 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); | |
972 | pos = XFASTINT (position); | |
973 | p = CHAR_POS_ADDR (pos); | |
974 | } | |
4b4deea2 | 975 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
d5998e03 | 976 | return make_number (*p); |
ee107a89 KH |
977 | } |
978 | else | |
979 | { | |
980 | CHECK_STRING (string); | |
981 | if (NILP (position)) | |
982 | { | |
983 | p = SDATA (string); | |
984 | } | |
985 | else | |
986 | { | |
987 | CHECK_NATNUM (position); | |
988 | if (XINT (position) >= SCHARS (string)) | |
989 | args_out_of_range (string, position); | |
990 | pos = XFASTINT (position); | |
991 | p = SDATA (string) + string_char_to_byte (string, pos); | |
992 | } | |
d5998e03 KH |
993 | if (! STRING_MULTIBYTE (string)) |
994 | return make_number (*p); | |
ee107a89 | 995 | } |
62a6e103 | 996 | c = STRING_CHAR (p); |
ee107a89 KH |
997 | if (CHAR_BYTE8_P (c)) |
998 | c = CHAR_TO_BYTE8 (c); | |
999 | else if (! ASCII_CHAR_P (c)) | |
1000 | error ("Not an ASCII nor an 8-bit character: %d", c); | |
1001 | return make_number (c); | |
1002 | } | |
1003 | ||
1004 | ||
0168c3d8 | 1005 | void |
971de7fb | 1006 | init_character_once (void) |
0168c3d8 KH |
1007 | { |
1008 | } | |
1009 | ||
1010 | #ifdef emacs | |
1011 | ||
1012 | void | |
971de7fb | 1013 | syms_of_character (void) |
0168c3d8 KH |
1014 | { |
1015 | DEFSYM (Qcharacterp, "characterp"); | |
1016 | DEFSYM (Qauto_fill_chars, "auto-fill-chars"); | |
1017 | ||
1018 | staticpro (&Vchar_unify_table); | |
1019 | Vchar_unify_table = Qnil; | |
1020 | ||
1021 | defsubr (&Smax_char); | |
1022 | defsubr (&Scharacterp); | |
1023 | defsubr (&Sunibyte_char_to_multibyte); | |
1024 | defsubr (&Smultibyte_char_to_unibyte); | |
0168c3d8 KH |
1025 | defsubr (&Schar_width); |
1026 | defsubr (&Sstring_width); | |
0168c3d8 | 1027 | defsubr (&Sstring); |
70b4969d | 1028 | defsubr (&Sunibyte_string); |
d0363d44 | 1029 | defsubr (&Schar_resolve_modifiers); |
ee107a89 | 1030 | defsubr (&Sget_byte); |
0168c3d8 | 1031 | |
29208e82 | 1032 | DEFVAR_LISP ("translation-table-vector", Vtranslation_table_vector, |
0168c3d8 | 1033 | doc: /* |
68978cf0 DL |
1034 | Vector recording all translation tables ever defined. |
1035 | Each element is a pair (SYMBOL . TABLE) relating the table to the | |
1036 | symbol naming it. The ID of a translation table is an index into this vector. */); | |
0168c3d8 KH |
1037 | Vtranslation_table_vector = Fmake_vector (make_number (16), Qnil); |
1038 | ||
29208e82 | 1039 | DEFVAR_LISP ("auto-fill-chars", Vauto_fill_chars, |
0168c3d8 KH |
1040 | doc: /* |
1041 | A char-table for characters which invoke auto-filling. | |
1042 | Such characters have value t in this table. */); | |
1043 | Vauto_fill_chars = Fmake_char_table (Qauto_fill_chars, Qnil); | |
6cc0e1ca DL |
1044 | CHAR_TABLE_SET (Vauto_fill_chars, ' ', Qt); |
1045 | CHAR_TABLE_SET (Vauto_fill_chars, '\n', Qt); | |
0168c3d8 | 1046 | |
29208e82 | 1047 | DEFVAR_LISP ("char-width-table", Vchar_width_table, |
0168c3d8 KH |
1048 | doc: /* |
1049 | A char-table for width (columns) of each character. */); | |
1050 | Vchar_width_table = Fmake_char_table (Qnil, make_number (1)); | |
be8b50bc KH |
1051 | char_table_set_range (Vchar_width_table, 0x80, 0x9F, make_number (4)); |
1052 | char_table_set_range (Vchar_width_table, MAX_5_BYTE_CHAR + 1, MAX_CHAR, | |
1053 | make_number (4)); | |
0168c3d8 | 1054 | |
29208e82 | 1055 | DEFVAR_LISP ("printable-chars", Vprintable_chars, |
0168c3d8 | 1056 | doc: /* A char-table for each printable character. */); |
db6d4189 | 1057 | Vprintable_chars = Fmake_char_table (Qnil, Qnil); |
67dde660 KH |
1058 | Fset_char_table_range (Vprintable_chars, |
1059 | Fcons (make_number (32), make_number (126)), Qt); | |
1060 | Fset_char_table_range (Vprintable_chars, | |
1061 | Fcons (make_number (160), | |
1062 | make_number (MAX_5_BYTE_CHAR)), Qt); | |
15843e6f | 1063 | |
29208e82 | 1064 | DEFVAR_LISP ("char-script-table", Vchar_script_table, |
c57f3328 KH |
1065 | doc: /* Char table of script symbols. |
1066 | It has one extra slot whose value is a list of script symbols. */); | |
1067 | ||
1068 | /* Intern this now in case it isn't already done. | |
1069 | Setting this variable twice is harmless. | |
1070 | But don't staticpro it here--that is done in alloc.c. */ | |
d67b4f80 | 1071 | Qchar_table_extra_slots = intern_c_string ("char-table-extra-slots"); |
c57f3328 KH |
1072 | DEFSYM (Qchar_script_table, "char-script-table"); |
1073 | Fput (Qchar_script_table, Qchar_table_extra_slots, make_number (1)); | |
1074 | Vchar_script_table = Fmake_char_table (Qchar_script_table, Qnil); | |
c7e14352 | 1075 | |
29208e82 | 1076 | DEFVAR_LISP ("script-representative-chars", Vscript_representative_chars, |
c3bb7671 | 1077 | doc: /* Alist of scripts vs the representative characters. |
f4427a54 | 1078 | Each element is a cons (SCRIPT . CHARS). |
4d8e170e | 1079 | SCRIPT is a symbol representing a script or a subgroup of a script. |
c3bb7671 | 1080 | CHARS is a list or a vector of characters. |
472a4dc9 | 1081 | If it is a list, all characters in the list are necessary for supporting SCRIPT. |
c3bb7671 KH |
1082 | If it is a vector, one of the characters in the vector is necessary. |
1083 | This variable is used to find a font for a specific script. */); | |
c7e14352 | 1084 | Vscript_representative_chars = Qnil; |
a3cbb631 | 1085 | |
29208e82 | 1086 | DEFVAR_LISP ("unicode-category-table", Vunicode_category_table, |
a3cbb631 | 1087 | doc: /* Char table of Unicode's "General Category". |
472a4dc9 JB |
1088 | All Unicode characters have one of the following values (symbol): |
1089 | Lu, Ll, Lt, Lm, Lo, Mn, Mc, Me, Nd, Nl, No, Pc, Pd, Ps, Pe, Pi, Pf, Po, | |
a3cbb631 KH |
1090 | Sm, Sc, Sk, So, Zs, Zl, Zp, Cc, Cf, Cs, Co, Cn |
1091 | See The Unicode Standard for the meaning of those values. */); | |
1092 | /* The correct char-table is setup in characters.el. */ | |
1093 | Vunicode_category_table = Qnil; | |
0168c3d8 KH |
1094 | } |
1095 | ||
1096 | #endif /* emacs */ |