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 | ||
68c45bf0 PE |
25 | #ifdef emacs |
26 | #include <config.h> | |
27 | #endif | |
28 | ||
4ed46869 KH |
29 | #include <stdio.h> |
30 | ||
31 | #ifdef emacs | |
32 | ||
33 | #include <sys/types.h> | |
4ed46869 KH |
34 | #include "lisp.h" |
35 | #include "buffer.h" | |
36 | #include "charset.h" | |
37 | #include "coding.h" | |
fc6b09bf | 38 | #include "disptab.h" |
4ed46869 KH |
39 | |
40 | #else /* not emacs */ | |
41 | ||
42 | #include "mulelib.h" | |
43 | ||
44 | #endif /* emacs */ | |
45 | ||
99529c2c | 46 | Lisp_Object Qcharset, Qascii; |
0282eb69 | 47 | Lisp_Object Qunknown; |
4ed46869 KH |
48 | |
49 | /* Declaration of special leading-codes. */ | |
4ed46869 KH |
50 | int leading_code_private_11; /* for private DIMENSION1 of 1-column */ |
51 | int leading_code_private_12; /* for private DIMENSION1 of 2-column */ | |
52 | int leading_code_private_21; /* for private DIMENSION2 of 1-column */ | |
53 | int leading_code_private_22; /* for private DIMENSION2 of 2-column */ | |
54 | ||
55 | /* Declaration of special charsets. */ | |
56 | int charset_ascii; /* ASCII */ | |
4ed46869 KH |
57 | int charset_latin_iso8859_1; /* ISO8859-1 (Latin-1) */ |
58 | int charset_jisx0208_1978; /* JISX0208.1978 (Japanese Kanji old set) */ | |
59 | int charset_jisx0208; /* JISX0208.1983 (Japanese Kanji) */ | |
60 | int charset_katakana_jisx0201; /* JISX0201.Kana (Japanese Katakana) */ | |
61 | int charset_latin_jisx0201; /* JISX0201.Roman (Japanese Roman) */ | |
62 | int charset_big5_1; /* Big5 Level 1 (Chinese Traditional) */ | |
63 | int charset_big5_2; /* Big5 Level 2 (Chinese Traditional) */ | |
64 | ||
65 | Lisp_Object Qcharset_table; | |
66 | ||
67 | /* A char-table containing information of each character set. */ | |
68 | Lisp_Object Vcharset_table; | |
69 | ||
70 | /* A vector of charset symbol indexed by charset-id. This is used | |
71 | only for returning charset symbol from C functions. */ | |
72 | Lisp_Object Vcharset_symbol_table; | |
73 | ||
74 | /* A list of charset symbols ever defined. */ | |
75 | Lisp_Object Vcharset_list; | |
76 | ||
537efd8d KH |
77 | /* Vector of translation table ever defined. |
78 | ID of a translation table is used to index this vector. */ | |
79 | Lisp_Object Vtranslation_table_vector; | |
b0e3cf2b | 80 | |
c1a08b4c KH |
81 | /* A char-table for characters which may invoke auto-filling. */ |
82 | Lisp_Object Vauto_fill_chars; | |
83 | ||
84 | Lisp_Object Qauto_fill_chars; | |
85 | ||
4ed46869 KH |
86 | /* Tables used by macros BYTES_BY_CHAR_HEAD and WIDTH_BY_CHAR_HEAD. */ |
87 | int bytes_by_char_head[256]; | |
88 | int width_by_char_head[256]; | |
89 | ||
90 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
91 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
92 | int iso_charset_table[2][2][128]; | |
93 | ||
94 | /* Variables used locally in the macro FETCH_MULTIBYTE_CHAR. */ | |
95 | unsigned char *_fetch_multibyte_char_p; | |
96 | int _fetch_multibyte_char_len; | |
97 | ||
35e623fb RS |
98 | /* Offset to add to a non-ASCII value when inserting it. */ |
99 | int nonascii_insert_offset; | |
100 | ||
4cf9710d RS |
101 | /* Translation table for converting non-ASCII unibyte characters |
102 | to multibyte codes, or nil. */ | |
b4e9dd77 | 103 | Lisp_Object Vnonascii_translation_table; |
4cf9710d | 104 | |
8a73a704 KH |
105 | /* List of all possible generic characters. */ |
106 | Lisp_Object Vgeneric_character_list; | |
107 | ||
046b1f03 RS |
108 | #define min(X, Y) ((X) < (Y) ? (X) : (Y)) |
109 | #define max(X, Y) ((X) > (Y) ? (X) : (Y)) | |
110 | \f | |
93bcb785 KH |
111 | void |
112 | invalid_character (c) | |
113 | int c; | |
114 | { | |
ba7434e5 | 115 | error ("Invalid character: 0%o, %d, 0x%x", c, c, c); |
93bcb785 KH |
116 | } |
117 | ||
99529c2c KH |
118 | /* Parse a multibyte character string STR of length LENGTH (>= 2) set |
119 | BYTES to the length of actual multibyte sequence, CHARSET, C1, and | |
120 | C2 to such values that MAKE_CHAR can make the multibyte character | |
121 | from them. | |
44c6492d | 122 | |
99529c2c | 123 | It is assumed that *STR is one of base leading codes and the |
44c6492d KH |
124 | following (LENGTH - 1) bytes satisfy !CHAR_HEAD_P. |
125 | ||
44c6492d | 126 | This macro should be called only from SPLIT_MULTIBYTE_SEQ. */ |
ac4137cc KH |
127 | |
128 | #define SPLIT_CHARACTER_SEQ(str, length, bytes, charset, c1, c2) \ | |
129 | do { \ | |
130 | (bytes) = 1; \ | |
131 | (charset) = (str)[0]; \ | |
132 | if ((charset) >= LEADING_CODE_PRIVATE_11 \ | |
133 | && (charset) <= LEADING_CODE_PRIVATE_22) \ | |
134 | (charset) = (str)[(bytes)++]; \ | |
135 | if ((bytes) < (length)) \ | |
136 | { \ | |
137 | (c1) = (str)[(bytes)++] & 0x7F; \ | |
138 | if ((bytes) < (length)) \ | |
139 | (c2) = (str)[(bytes)++] & 0x7F; \ | |
140 | else \ | |
141 | (c2) = -1; \ | |
142 | } \ | |
143 | else \ | |
144 | (c1) = (c2) = -1; \ | |
145 | } while (0) | |
146 | ||
147 | /* Parse string STR of length LENGTH and check if a multibyte | |
99529c2c | 148 | characters is at STR. Set BYTES to the actual length, CHARSET, C1, |
ac4137cc KH |
149 | C2 to proper values for that character. */ |
150 | ||
151 | #define SPLIT_MULTIBYTE_SEQ(str, length, bytes, charset, c1, c2) \ | |
152 | do { \ | |
153 | int i; \ | |
44c6492d KH |
154 | if (ASCII_BYTE_P ((str)[0])) \ |
155 | i = 1; \ | |
156 | else \ | |
157 | for (i = 1; i < (length) && ! CHAR_HEAD_P ((str)[i]); i++); \ | |
ac4137cc KH |
158 | if (i == 1) \ |
159 | (bytes) = 1, (charset) = CHARSET_ASCII, (c1) = (str)[0] ; \ | |
ac4137cc KH |
160 | else \ |
161 | { \ | |
162 | if (i > BYTES_BY_CHAR_HEAD ((str)[0])) \ | |
163 | i = BYTES_BY_CHAR_HEAD ((str)[0]); \ | |
164 | SPLIT_CHARACTER_SEQ (str, i, bytes, charset, c1, c2); \ | |
165 | } \ | |
166 | } while (0) | |
167 | ||
168 | /* 1 if CHARSET, C1, and C2 compose a valid character, else 0. */ | |
44c6492d | 169 | #define CHAR_COMPONENTS_VALID_P(charset, c1, c2) \ |
63f4d579 KH |
170 | (charset == CHARSET_ASCII \ |
171 | ? ((c1) >= 0 && (c1) <= 0x7F) \ | |
172 | : (CHARSET_DIMENSION (charset) == 1 \ | |
173 | ? ((c1) >= 0x20 && (c1) <= 0x7F) \ | |
174 | : ((c1) >= 0x20 && (c1) <= 0x7F && (c2) >= 0x20 && (c2) <= 0x7F))) | |
93bcb785 | 175 | |
99529c2c KH |
176 | /* Store multi-byte form of the character C in STR. The caller should |
177 | allocate at least 4-byte area at STR in advance. Returns the | |
178 | length of the multi-byte form. If C is an invalid character code, | |
179 | signal an error. | |
4ed46869 | 180 | |
99529c2c KH |
181 | Use macro `CHAR_STRING (C, STR)' instead of calling this function |
182 | directly if C can be an ASCII character. */ | |
4ed46869 KH |
183 | |
184 | int | |
99529c2c | 185 | char_to_string (c, str) |
4ed46869 | 186 | int c; |
99529c2c | 187 | unsigned char *str; |
4ed46869 | 188 | { |
99529c2c KH |
189 | unsigned char *p = str; |
190 | ||
6662e69b | 191 | if (c & CHAR_MODIFIER_MASK) /* This includes the case C is negative. */ |
8ac5a9cc | 192 | { |
6662e69b KH |
193 | /* Multibyte character can't have a modifier bit. */ |
194 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
195 | invalid_character (c); | |
196 | ||
197 | /* For Meta, Shift, and Control modifiers, we need special care. */ | |
8ac5a9cc | 198 | if (c & CHAR_META) |
6662e69b KH |
199 | { |
200 | /* Move the meta bit to the right place for a string. */ | |
201 | c = (c & ~CHAR_META) | 0x80; | |
202 | } | |
203 | if (c & CHAR_SHIFT) | |
204 | { | |
205 | /* Shift modifier is valid only with [A-Za-z]. */ | |
206 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
207 | c &= ~CHAR_SHIFT; | |
208 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
209 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
210 | } | |
8ac5a9cc | 211 | if (c & CHAR_CTL) |
6662e69b KH |
212 | { |
213 | /* Simulate the code in lread.c. */ | |
214 | /* Allow `\C- ' and `\C-?'. */ | |
215 | if (c == (CHAR_CTL | ' ')) | |
216 | c = 0; | |
217 | else if (c == (CHAR_CTL | '?')) | |
218 | c = 127; | |
219 | /* ASCII control chars are made from letters (both cases), | |
220 | as well as the non-letters within 0100...0137. */ | |
221 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
222 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
223 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
224 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
225 | } | |
226 | ||
227 | /* If C still has any modifier bits, it is an invalid character. */ | |
228 | if (c & CHAR_MODIFIER_MASK) | |
229 | invalid_character (c); | |
230 | ||
99529c2c | 231 | *p++ = c; |
8ac5a9cc | 232 | } |
99529c2c | 233 | else if (c < MAX_CHAR) |
4ed46869 | 234 | { |
ac4137cc | 235 | int charset, c1, c2; |
4ed46869 | 236 | |
ac4137cc | 237 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); |
99529c2c KH |
238 | |
239 | if (charset >= LEADING_CODE_EXT_11) | |
240 | *p++ = (charset < LEADING_CODE_EXT_12 | |
241 | ? LEADING_CODE_PRIVATE_11 | |
242 | : (charset < LEADING_CODE_EXT_21 | |
243 | ? LEADING_CODE_PRIVATE_12 | |
244 | : (charset < LEADING_CODE_EXT_22 | |
245 | ? LEADING_CODE_PRIVATE_21 | |
246 | : LEADING_CODE_PRIVATE_22))); | |
247 | *p++ = charset; | |
248 | if (c1 > 0 && c1 < 32 || c2 > 0 && c2 < 32) | |
249 | invalid_character (c); | |
250 | if (c1) | |
4ed46869 | 251 | { |
99529c2c KH |
252 | *p++ = c1 | 0x80; |
253 | if (c2 > 0) | |
254 | *p++ = c2 | 0x80; | |
4ed46869 KH |
255 | } |
256 | } | |
257 | ||
99529c2c | 258 | return (p -str); |
4ed46869 KH |
259 | } |
260 | ||
44c6492d KH |
261 | /* Return the non-ASCII character corresponding to multi-byte form at |
262 | STR of length LEN. If ACTUAL_LEN is not NULL, store the byte | |
263 | length of the multibyte form in *ACTUAL_LEN. | |
537efd8d | 264 | |
99529c2c KH |
265 | Use macros STRING_CHAR or STRING_CHAR_AND_LENGTH instead of calling |
266 | this function directly if you want ot handle ASCII characters as | |
267 | well. */ | |
4ed46869 | 268 | |
dfcf069d | 269 | int |
99529c2c | 270 | string_to_char (str, len, actual_len) |
8867de67 | 271 | const unsigned char *str; |
ac4137cc | 272 | int len, *actual_len; |
4ed46869 | 273 | { |
ac4137cc | 274 | int c, bytes, charset, c1, c2; |
4ed46869 | 275 | |
ac4137cc KH |
276 | SPLIT_MULTIBYTE_SEQ (str, len, bytes, charset, c1, c2); |
277 | c = MAKE_CHAR (charset, c1, c2); | |
4ed46869 | 278 | if (actual_len) |
ac4137cc | 279 | *actual_len = bytes; |
4ed46869 KH |
280 | return c; |
281 | } | |
282 | ||
44c6492d KH |
283 | /* Return the length of the multi-byte form at string STR of length LEN. |
284 | Use the macro MULTIBYTE_FORM_LENGTH instead. */ | |
4ed46869 KH |
285 | int |
286 | multibyte_form_length (str, len) | |
8867de67 | 287 | const unsigned char *str; |
4ed46869 KH |
288 | int len; |
289 | { | |
ac4137cc | 290 | int bytes; |
4ed46869 | 291 | |
ac4137cc | 292 | PARSE_MULTIBYTE_SEQ (str, len, bytes); |
90d7b74e | 293 | return bytes; |
4ed46869 KH |
294 | } |
295 | ||
ac4137cc KH |
296 | /* Check multibyte form at string STR of length LEN and set variables |
297 | pointed by CHARSET, C1, and C2 to charset and position codes of the | |
298 | character at STR, and return 0. If there's no multibyte character, | |
4ed46869 KH |
299 | return -1. This should be used only in the macro SPLIT_STRING |
300 | which checks range of STR in advance. */ | |
301 | ||
dfcf069d | 302 | int |
99529c2c | 303 | split_string (str, len, charset, c1, c2) |
ac4137cc KH |
304 | const unsigned char *str; |
305 | unsigned char *c1, *c2; | |
306 | int len, *charset; | |
4ed46869 | 307 | { |
ac4137cc | 308 | register int bytes, cs, code1, code2 = -1; |
4ed46869 | 309 | |
ac4137cc KH |
310 | SPLIT_MULTIBYTE_SEQ (str, len, bytes, cs, code1, code2); |
311 | if (cs == CHARSET_ASCII) | |
4ed46869 | 312 | return -1; |
ac4137cc KH |
313 | *charset = cs; |
314 | *c1 = code1; | |
315 | *c2 = code2; | |
5865af0d | 316 | return 0; |
ac4137cc KH |
317 | } |
318 | ||
44c6492d KH |
319 | /* Return 1 iff character C has valid printable glyph. |
320 | Use the macro CHAR_PRINTABLE_P instead. */ | |
ac4137cc KH |
321 | int |
322 | char_printable_p (c) | |
323 | int c; | |
324 | { | |
325 | int charset, c1, c2, chars; | |
326 | ||
327 | if (SINGLE_BYTE_CHAR_P (c)) | |
328 | return 1; | |
99529c2c KH |
329 | if (c >= MAX_CHAR) |
330 | return 0; | |
ac4137cc KH |
331 | |
332 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); | |
333 | if (! CHARSET_DEFINED_P (charset)) | |
334 | return 0; | |
335 | if (CHARSET_CHARS (charset) == 94 | |
336 | ? c1 <= 32 || c1 >= 127 | |
337 | : c1 < 32) | |
338 | return 0; | |
339 | if (CHARSET_DIMENSION (charset) == 2 | |
340 | && (CHARSET_CHARS (charset) == 94 | |
341 | ? c2 <= 32 || c2 >= 127 | |
342 | : c2 < 32)) | |
343 | return 0; | |
344 | return 1; | |
4ed46869 KH |
345 | } |
346 | ||
537efd8d | 347 | /* Translate character C by translation table TABLE. If C |
b4e9dd77 KH |
348 | is negative, translate a character specified by CHARSET, C1, and C2 |
349 | (C1 and C2 are code points of the character). If no translation is | |
350 | found in TABLE, return C. */ | |
dfcf069d | 351 | int |
b4e9dd77 | 352 | translate_char (table, c, charset, c1, c2) |
23d2a7f1 KH |
353 | Lisp_Object table; |
354 | int c, charset, c1, c2; | |
355 | { | |
356 | Lisp_Object ch; | |
357 | int alt_charset, alt_c1, alt_c2, dimension; | |
358 | ||
0ad3f83d | 359 | if (c < 0) c = MAKE_CHAR (charset, (c1 & 0x7F) , (c2 & 0x7F)); |
23d2a7f1 | 360 | if (!CHAR_TABLE_P (table) |
ac4137cc | 361 | || (ch = Faref (table, make_number (c)), !NATNUMP (ch))) |
23d2a7f1 KH |
362 | return c; |
363 | ||
364 | SPLIT_CHAR (XFASTINT (ch), alt_charset, alt_c1, alt_c2); | |
365 | dimension = CHARSET_DIMENSION (alt_charset); | |
366 | if (dimension == 1 && alt_c1 > 0 || dimension == 2 && alt_c2 > 0) | |
367 | /* CH is not a generic character, just return it. */ | |
368 | return XFASTINT (ch); | |
369 | ||
370 | /* Since CH is a generic character, we must return a specific | |
371 | charater which has the same position codes as C from CH. */ | |
372 | if (charset < 0) | |
373 | SPLIT_CHAR (c, charset, c1, c2); | |
374 | if (dimension != CHARSET_DIMENSION (charset)) | |
375 | /* We can't make such a character because of dimension mismatch. */ | |
376 | return c; | |
23d2a7f1 KH |
377 | return MAKE_CHAR (alt_charset, c1, c2); |
378 | } | |
379 | ||
d2665018 | 380 | /* Convert the unibyte character C to multibyte based on |
b4e9dd77 | 381 | Vnonascii_translation_table or nonascii_insert_offset. If they can't |
d2665018 KH |
382 | convert C to a valid multibyte character, convert it based on |
383 | DEFAULT_NONASCII_INSERT_OFFSET which makes C a Latin-1 character. */ | |
35e623fb | 384 | |
dfcf069d | 385 | int |
35e623fb RS |
386 | unibyte_char_to_multibyte (c) |
387 | int c; | |
388 | { | |
543b4f61 | 389 | if (c < 0400 && c >= 0200) |
35e623fb | 390 | { |
d2665018 KH |
391 | int c_save = c; |
392 | ||
b4e9dd77 | 393 | if (! NILP (Vnonascii_translation_table)) |
bbf12bb3 KH |
394 | { |
395 | c = XINT (Faref (Vnonascii_translation_table, make_number (c))); | |
ac4137cc | 396 | if (c >= 0400 && ! char_valid_p (c, 0)) |
bbf12bb3 KH |
397 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
398 | } | |
399 | else if (c >= 0240 && nonascii_insert_offset > 0) | |
400 | { | |
401 | c += nonascii_insert_offset; | |
ac4137cc | 402 | if (c < 0400 || ! char_valid_p (c, 0)) |
bbf12bb3 KH |
403 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
404 | } | |
405 | else if (c >= 0240) | |
d2665018 | 406 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
35e623fb RS |
407 | } |
408 | return c; | |
409 | } | |
76d7b829 KH |
410 | |
411 | ||
412 | /* Convert the multibyte character C to unibyte 8-bit character based | |
413 | on Vnonascii_translation_table or nonascii_insert_offset. If | |
414 | REV_TBL is non-nil, it should be a reverse table of | |
415 | Vnonascii_translation_table, i.e. what given by: | |
416 | Fchar_table_extra_slot (Vnonascii_translation_table, make_number (0)) */ | |
417 | ||
418 | int | |
419 | multibyte_char_to_unibyte (c, rev_tbl) | |
420 | int c; | |
421 | Lisp_Object rev_tbl; | |
422 | { | |
423 | if (!SINGLE_BYTE_CHAR_P (c)) | |
424 | { | |
425 | int c_save = c; | |
426 | ||
427 | if (! CHAR_TABLE_P (rev_tbl) | |
428 | && CHAR_TABLE_P (Vnonascii_translation_table)) | |
429 | rev_tbl = Fchar_table_extra_slot (Vnonascii_translation_table, | |
430 | make_number (0)); | |
431 | if (CHAR_TABLE_P (rev_tbl)) | |
432 | { | |
433 | Lisp_Object temp; | |
434 | temp = Faref (rev_tbl, make_number (c)); | |
435 | if (INTEGERP (temp)) | |
436 | c = XINT (temp); | |
bbf12bb3 KH |
437 | if (c >= 256) |
438 | c = (c_save & 0177) + 0200; | |
439 | } | |
440 | else | |
441 | { | |
442 | if (nonascii_insert_offset > 0) | |
443 | c -= nonascii_insert_offset; | |
444 | if (c < 128 || c >= 256) | |
445 | c = (c_save & 0177) + 0200; | |
76d7b829 | 446 | } |
76d7b829 KH |
447 | } |
448 | ||
449 | return c; | |
450 | } | |
451 | ||
35e623fb | 452 | \f |
4ed46869 KH |
453 | /* Update the table Vcharset_table with the given arguments (see the |
454 | document of `define-charset' for the meaning of each argument). | |
455 | Several other table contents are also updated. The caller should | |
456 | check the validity of CHARSET-ID and the remaining arguments in | |
457 | advance. */ | |
458 | ||
459 | void | |
460 | update_charset_table (charset_id, dimension, chars, width, direction, | |
461 | iso_final_char, iso_graphic_plane, | |
462 | short_name, long_name, description) | |
463 | Lisp_Object charset_id, dimension, chars, width, direction; | |
464 | Lisp_Object iso_final_char, iso_graphic_plane; | |
465 | Lisp_Object short_name, long_name, description; | |
466 | { | |
467 | int charset = XINT (charset_id); | |
468 | int bytes; | |
469 | unsigned char leading_code_base, leading_code_ext; | |
470 | ||
6dc0722d KH |
471 | if (NILP (CHARSET_TABLE_ENTRY (charset))) |
472 | CHARSET_TABLE_ENTRY (charset) | |
473 | = Fmake_vector (make_number (CHARSET_MAX_IDX), Qnil); | |
4ed46869 KH |
474 | |
475 | /* Get byte length of multibyte form, base leading-code, and | |
476 | extended leading-code of the charset. See the comment under the | |
477 | title "GENERAL NOTE on CHARACTER SET (CHARSET)" in charset.h. */ | |
478 | bytes = XINT (dimension); | |
479 | if (charset < MIN_CHARSET_PRIVATE_DIMENSION1) | |
480 | { | |
481 | /* Official charset, it doesn't have an extended leading-code. */ | |
482 | if (charset != CHARSET_ASCII) | |
483 | bytes += 1; /* For a base leading-code. */ | |
484 | leading_code_base = charset; | |
485 | leading_code_ext = 0; | |
486 | } | |
487 | else | |
488 | { | |
489 | /* Private charset. */ | |
490 | bytes += 2; /* For base and extended leading-codes. */ | |
491 | leading_code_base | |
492 | = (charset < LEADING_CODE_EXT_12 | |
493 | ? LEADING_CODE_PRIVATE_11 | |
494 | : (charset < LEADING_CODE_EXT_21 | |
495 | ? LEADING_CODE_PRIVATE_12 | |
496 | : (charset < LEADING_CODE_EXT_22 | |
497 | ? LEADING_CODE_PRIVATE_21 | |
498 | : LEADING_CODE_PRIVATE_22))); | |
499 | leading_code_ext = charset; | |
500 | } | |
501 | ||
6ef23ebb KH |
502 | if (BYTES_BY_CHAR_HEAD (leading_code_base) != bytes) |
503 | error ("Invalid dimension for the charset-ID %d", charset); | |
504 | ||
4ed46869 KH |
505 | CHARSET_TABLE_INFO (charset, CHARSET_ID_IDX) = charset_id; |
506 | CHARSET_TABLE_INFO (charset, CHARSET_BYTES_IDX) = make_number (bytes); | |
507 | CHARSET_TABLE_INFO (charset, CHARSET_DIMENSION_IDX) = dimension; | |
508 | CHARSET_TABLE_INFO (charset, CHARSET_CHARS_IDX) = chars; | |
509 | CHARSET_TABLE_INFO (charset, CHARSET_WIDTH_IDX) = width; | |
510 | CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX) = direction; | |
511 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_BASE_IDX) | |
512 | = make_number (leading_code_base); | |
513 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_EXT_IDX) | |
514 | = make_number (leading_code_ext); | |
515 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_FINAL_CHAR_IDX) = iso_final_char; | |
516 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_GRAPHIC_PLANE_IDX) | |
517 | = iso_graphic_plane; | |
518 | CHARSET_TABLE_INFO (charset, CHARSET_SHORT_NAME_IDX) = short_name; | |
519 | CHARSET_TABLE_INFO (charset, CHARSET_LONG_NAME_IDX) = long_name; | |
520 | CHARSET_TABLE_INFO (charset, CHARSET_DESCRIPTION_IDX) = description; | |
521 | CHARSET_TABLE_INFO (charset, CHARSET_PLIST_IDX) = Qnil; | |
522 | ||
523 | { | |
524 | /* If we have already defined a charset which has the same | |
525 | DIMENSION, CHARS and ISO-FINAL-CHAR but the different | |
526 | DIRECTION, we must update the entry REVERSE-CHARSET of both | |
527 | charsets. If there's no such charset, the value of the entry | |
528 | is set to nil. */ | |
529 | int i; | |
530 | ||
513ee442 | 531 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
532 | if (!NILP (CHARSET_TABLE_ENTRY (i))) |
533 | { | |
534 | if (CHARSET_DIMENSION (i) == XINT (dimension) | |
535 | && CHARSET_CHARS (i) == XINT (chars) | |
536 | && CHARSET_ISO_FINAL_CHAR (i) == XINT (iso_final_char) | |
537 | && CHARSET_DIRECTION (i) != XINT (direction)) | |
538 | { | |
539 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
540 | = make_number (i); | |
541 | CHARSET_TABLE_INFO (i, CHARSET_REVERSE_CHARSET_IDX) = charset_id; | |
542 | break; | |
543 | } | |
544 | } | |
513ee442 | 545 | if (i > MAX_CHARSET) |
4ed46869 KH |
546 | /* No such a charset. */ |
547 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
548 | = make_number (-1); | |
549 | } | |
550 | ||
551 | if (charset != CHARSET_ASCII | |
552 | && charset < MIN_CHARSET_PRIVATE_DIMENSION1) | |
553 | { | |
4ed46869 KH |
554 | width_by_char_head[leading_code_base] = XINT (width); |
555 | ||
556 | /* Update table emacs_code_class. */ | |
557 | emacs_code_class[charset] = (bytes == 2 | |
558 | ? EMACS_leading_code_2 | |
559 | : (bytes == 3 | |
560 | ? EMACS_leading_code_3 | |
561 | : EMACS_leading_code_4)); | |
562 | } | |
563 | ||
564 | /* Update table iso_charset_table. */ | |
565 | if (ISO_CHARSET_TABLE (dimension, chars, iso_final_char) < 0) | |
566 | ISO_CHARSET_TABLE (dimension, chars, iso_final_char) = charset; | |
567 | } | |
568 | ||
569 | #ifdef emacs | |
570 | ||
571 | /* Return charset id of CHARSET_SYMBOL, or return -1 if CHARSET_SYMBOL | |
572 | is invalid. */ | |
573 | int | |
574 | get_charset_id (charset_symbol) | |
575 | Lisp_Object charset_symbol; | |
576 | { | |
577 | Lisp_Object val; | |
578 | int charset; | |
579 | ||
580 | return ((SYMBOLP (charset_symbol) | |
581 | && (val = Fget (charset_symbol, Qcharset), VECTORP (val)) | |
582 | && (charset = XINT (XVECTOR (val)->contents[CHARSET_ID_IDX]), | |
583 | CHARSET_VALID_P (charset))) | |
584 | ? charset : -1); | |
585 | } | |
586 | ||
587 | /* Return an identification number for a new private charset of | |
588 | DIMENSION and WIDTH. If there's no more room for the new charset, | |
589 | return 0. */ | |
590 | Lisp_Object | |
591 | get_new_private_charset_id (dimension, width) | |
592 | int dimension, width; | |
593 | { | |
594 | int charset, from, to; | |
595 | ||
596 | if (dimension == 1) | |
597 | { | |
598 | if (width == 1) | |
599 | from = LEADING_CODE_EXT_11, to = LEADING_CODE_EXT_12; | |
600 | else | |
601 | from = LEADING_CODE_EXT_12, to = LEADING_CODE_EXT_21; | |
602 | } | |
603 | else | |
604 | { | |
605 | if (width == 1) | |
606 | from = LEADING_CODE_EXT_21, to = LEADING_CODE_EXT_22; | |
607 | else | |
b0e3cf2b | 608 | from = LEADING_CODE_EXT_22, to = LEADING_CODE_EXT_MAX + 1; |
4ed46869 KH |
609 | } |
610 | ||
611 | for (charset = from; charset < to; charset++) | |
612 | if (!CHARSET_DEFINED_P (charset)) break; | |
613 | ||
614 | return make_number (charset < to ? charset : 0); | |
615 | } | |
616 | ||
617 | DEFUN ("define-charset", Fdefine_charset, Sdefine_charset, 3, 3, 0, | |
618 | "Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR.\n\ | |
23d2a7f1 | 619 | If CHARSET-ID is nil, it is decided automatically, which means CHARSET is\n\ |
4ed46869 KH |
620 | treated as a private charset.\n\ |
621 | INFO-VECTOR is a vector of the format:\n\ | |
622 | [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE\n\ | |
623 | SHORT-NAME LONG-NAME DESCRIPTION]\n\ | |
624 | The meanings of each elements is as follows:\n\ | |
625 | DIMENSION (integer) is the number of bytes to represent a character: 1 or 2.\n\ | |
626 | CHARS (integer) is the number of characters in a dimension: 94 or 96.\n\ | |
627 | WIDTH (integer) is the number of columns a character in the charset\n\ | |
628 | occupies on the screen: one of 0, 1, and 2.\n\ | |
629 | \n\ | |
630 | DIRECTION (integer) is the rendering direction of characters in the\n\ | |
277576f6 KH |
631 | charset when rendering. If 0, render from left to right, else\n\ |
632 | render from right to left.\n\ | |
4ed46869 KH |
633 | \n\ |
634 | ISO-FINAL-CHAR (character) is the final character of the\n\ | |
635 | corresponding ISO 2022 charset.\n\ | |
636 | \n\ | |
637 | ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked\n\ | |
638 | while encoding to variants of ISO 2022 coding system, one of the\n\ | |
639 | following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).\n\ | |
640 | \n\ | |
641 | SHORT-NAME (string) is the short name to refer to the charset.\n\ | |
642 | \n\ | |
643 | LONG-NAME (string) is the long name to refer to the charset.\n\ | |
644 | \n\ | |
645 | DESCRIPTION (string) is the description string of the charset.") | |
646 | (charset_id, charset_symbol, info_vector) | |
647 | Lisp_Object charset_id, charset_symbol, info_vector; | |
648 | { | |
649 | Lisp_Object *vec; | |
650 | ||
651 | if (!NILP (charset_id)) | |
652 | CHECK_NUMBER (charset_id, 0); | |
653 | CHECK_SYMBOL (charset_symbol, 1); | |
654 | CHECK_VECTOR (info_vector, 2); | |
655 | ||
656 | if (! NILP (charset_id)) | |
657 | { | |
658 | if (! CHARSET_VALID_P (XINT (charset_id))) | |
659 | error ("Invalid CHARSET: %d", XINT (charset_id)); | |
660 | else if (CHARSET_DEFINED_P (XINT (charset_id))) | |
661 | error ("Already defined charset: %d", XINT (charset_id)); | |
662 | } | |
663 | ||
664 | vec = XVECTOR (info_vector)->contents; | |
665 | if (XVECTOR (info_vector)->size != 9 | |
666 | || !INTEGERP (vec[0]) || !(XINT (vec[0]) == 1 || XINT (vec[0]) == 2) | |
667 | || !INTEGERP (vec[1]) || !(XINT (vec[1]) == 94 || XINT (vec[1]) == 96) | |
668 | || !INTEGERP (vec[2]) || !(XINT (vec[2]) == 1 || XINT (vec[2]) == 2) | |
669 | || !INTEGERP (vec[3]) || !(XINT (vec[3]) == 0 || XINT (vec[3]) == 1) | |
670 | || !INTEGERP (vec[4]) || !(XINT (vec[4]) >= '0' && XINT (vec[4]) <= '~') | |
671 | || !INTEGERP (vec[5]) || !(XINT (vec[5]) == 0 || XINT (vec[5]) == 1) | |
672 | || !STRINGP (vec[6]) | |
673 | || !STRINGP (vec[7]) | |
674 | || !STRINGP (vec[8])) | |
675 | error ("Invalid info-vector argument for defining charset %s", | |
676 | XSYMBOL (charset_symbol)->name->data); | |
677 | ||
678 | if (NILP (charset_id)) | |
679 | { | |
680 | charset_id = get_new_private_charset_id (XINT (vec[0]), XINT (vec[2])); | |
681 | if (XINT (charset_id) == 0) | |
682 | error ("There's no room for a new private charset %s", | |
683 | XSYMBOL (charset_symbol)->name->data); | |
684 | } | |
685 | ||
686 | update_charset_table (charset_id, vec[0], vec[1], vec[2], vec[3], | |
687 | vec[4], vec[5], vec[6], vec[7], vec[8]); | |
6dc0722d | 688 | Fput (charset_symbol, Qcharset, CHARSET_TABLE_ENTRY (XINT (charset_id))); |
4ed46869 KH |
689 | CHARSET_SYMBOL (XINT (charset_id)) = charset_symbol; |
690 | Vcharset_list = Fcons (charset_symbol, Vcharset_list); | |
691 | return Qnil; | |
692 | } | |
693 | ||
8a73a704 KH |
694 | DEFUN ("generic-character-list", Fgeneric_character_list, |
695 | Sgeneric_character_list, 0, 0, 0, | |
696 | "Return a list of all possible generic characters.\n\ | |
697 | It includes a generic character for a charset not yet defined.") | |
698 | () | |
699 | { | |
700 | return Vgeneric_character_list; | |
701 | } | |
702 | ||
3fac5a51 KH |
703 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
704 | Sget_unused_iso_final_char, 2, 2, 0, | |
705 | "Return an unsed ISO's final char for a charset of DIMENISION and CHARS.\n\ | |
706 | DIMENSION is the number of bytes to represent a character: 1 or 2.\n\ | |
707 | CHARS is the number of characters in a dimension: 94 or 96.\n\ | |
708 | \n\ | |
709 | This final char is for private use, thus the range is `0' (48) .. `?' (63).\n\ | |
710 | If there's no unused final char for the specified kind of charset,\n\ | |
711 | return nil.") | |
712 | (dimension, chars) | |
713 | Lisp_Object dimension, chars; | |
714 | { | |
715 | int final_char; | |
716 | ||
717 | CHECK_NUMBER (dimension, 0); | |
718 | CHECK_NUMBER (chars, 1); | |
719 | if (XINT (dimension) != 1 && XINT (dimension) != 2) | |
720 | error ("Invalid charset dimension %d, it should be 1 or 2", | |
721 | XINT (dimension)); | |
722 | if (XINT (chars) != 94 && XINT (chars) != 96) | |
723 | error ("Invalid charset chars %d, it should be 94 or 96", | |
724 | XINT (chars)); | |
725 | for (final_char = '0'; final_char <= '?'; final_char++) | |
726 | { | |
727 | if (ISO_CHARSET_TABLE (dimension, chars, make_number (final_char)) < 0) | |
728 | break; | |
729 | } | |
730 | return (final_char <= '?' ? make_number (final_char) : Qnil); | |
731 | } | |
732 | ||
4ed46869 KH |
733 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, |
734 | 4, 4, 0, | |
735 | "Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.\n\ | |
736 | CHARSET should be defined by `defined-charset' in advance.") | |
737 | (dimension, chars, final_char, charset_symbol) | |
738 | Lisp_Object dimension, chars, final_char, charset_symbol; | |
739 | { | |
740 | int charset; | |
741 | ||
742 | CHECK_NUMBER (dimension, 0); | |
743 | CHECK_NUMBER (chars, 1); | |
744 | CHECK_NUMBER (final_char, 2); | |
745 | CHECK_SYMBOL (charset_symbol, 3); | |
746 | ||
747 | if (XINT (dimension) != 1 && XINT (dimension) != 2) | |
748 | error ("Invalid DIMENSION %d, it should be 1 or 2", XINT (dimension)); | |
749 | if (XINT (chars) != 94 && XINT (chars) != 96) | |
750 | error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars)); | |
751 | if (XINT (final_char) < '0' || XFASTINT (final_char) > '~') | |
752 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars)); | |
753 | if ((charset = get_charset_id (charset_symbol)) < 0) | |
754 | error ("Invalid charset %s", XSYMBOL (charset_symbol)->name->data); | |
755 | ||
756 | ISO_CHARSET_TABLE (dimension, chars, final_char) = charset; | |
757 | return Qnil; | |
758 | } | |
759 | ||
760 | /* Return number of different charsets in STR of length LEN. In | |
761 | addition, for each found charset N, CHARSETS[N] is set 1. The | |
a29e3b1b | 762 | caller should allocate CHARSETS (MAX_CHARSET + 1 elements) in advance. |
1d67c29b KH |
763 | It may lookup a translation table TABLE if supplied. |
764 | ||
0282eb69 KH |
765 | If MULTIBYTE is zero, do not check multibyte characters, i.e. if |
766 | any ASCII codes (7-bit) are found, CHARSET[0] is set to 1, if any | |
767 | 8-bit codes are found CHARSET[1] is set to 1. */ | |
4ed46869 KH |
768 | |
769 | int | |
99529c2c | 770 | find_charset_in_str (str, len, charsets, table, multibyte) |
028d516b KH |
771 | unsigned char *str; |
772 | int len, *charsets; | |
23d2a7f1 | 773 | Lisp_Object table; |
0282eb69 | 774 | int multibyte; |
4ed46869 | 775 | { |
65d0af29 | 776 | register int num = 0; |
4ed46869 | 777 | |
0282eb69 KH |
778 | if (! multibyte) |
779 | { | |
780 | unsigned char *endp = str + len; | |
781 | int maskbits = 0; | |
782 | ||
783 | while (str < endp && maskbits != 3) | |
784 | maskbits |= (*str++ < 0x80 ? 1 : 2); | |
785 | if (maskbits & 1) | |
786 | { | |
787 | charsets[0] = 1; | |
788 | num++; | |
789 | } | |
790 | if (maskbits & 2) | |
791 | { | |
792 | charsets[1] = 1; | |
793 | num++; | |
794 | } | |
795 | return num; | |
796 | } | |
797 | ||
23d2a7f1 KH |
798 | if (! CHAR_TABLE_P (table)) |
799 | table = Qnil; | |
800 | ||
4ed46869 KH |
801 | while (len > 0) |
802 | { | |
99529c2c | 803 | int bytes, charset, c1, c2; |
05505664 | 804 | |
99529c2c | 805 | SPLIT_MULTIBYTE_SEQ (str, len, bytes, charset, c1, c2); |
05505664 | 806 | |
99529c2c | 807 | if (! NILP (table)) |
23d2a7f1 | 808 | { |
99529c2c KH |
809 | int c1 = translate_char (table, -1, charset, c1, c2); |
810 | if (c1 >= 0) | |
65d0af29 | 811 | charset = CHAR_CHARSET (c1); |
23d2a7f1 | 812 | } |
4ed46869 KH |
813 | |
814 | if (!charsets[charset]) | |
815 | { | |
816 | charsets[charset] = 1; | |
817 | num += 1; | |
818 | } | |
819 | str += bytes; | |
820 | len -= bytes; | |
821 | } | |
822 | return num; | |
823 | } | |
824 | ||
825 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, | |
23d2a7f1 | 826 | 2, 3, 0, |
4ed46869 | 827 | "Return a list of charsets in the region between BEG and END.\n\ |
23d2a7f1 | 828 | BEG and END are buffer positions.\n\ |
0282eb69 KH |
829 | Optional arg TABLE if non-nil is a translation table to look up.\n\ |
830 | \n\ | |
831 | If the region contains invalid multiybte characters,\n\ | |
38f02ede | 832 | `unknown' is included in the returned list.\n\ |
0282eb69 KH |
833 | \n\ |
834 | If the current buffer is unibyte, the returned list contains\n\ | |
835 | `ascii' if any 7-bit characters are found,\n\ | |
836 | and `unknown' if any 8-bit characters are found.") | |
23d2a7f1 KH |
837 | (beg, end, table) |
838 | Lisp_Object beg, end, table; | |
4ed46869 | 839 | { |
028d516b | 840 | int charsets[MAX_CHARSET + 1]; |
6ae1f27e | 841 | int from, from_byte, to, stop, stop_byte, i; |
4ed46869 | 842 | Lisp_Object val; |
0282eb69 KH |
843 | int undefined; |
844 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); | |
4ed46869 KH |
845 | |
846 | validate_region (&beg, &end); | |
847 | from = XFASTINT (beg); | |
848 | stop = to = XFASTINT (end); | |
6ae1f27e | 849 | |
4ed46869 | 850 | if (from < GPT && GPT < to) |
6ae1f27e RS |
851 | { |
852 | stop = GPT; | |
853 | stop_byte = GPT_BYTE; | |
854 | } | |
855 | else | |
856 | stop_byte = CHAR_TO_BYTE (stop); | |
857 | ||
858 | from_byte = CHAR_TO_BYTE (from); | |
859 | ||
028d516b | 860 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
4ed46869 KH |
861 | while (1) |
862 | { | |
6ae1f27e | 863 | find_charset_in_str (BYTE_POS_ADDR (from_byte), stop_byte - from_byte, |
99529c2c | 864 | charsets, table, multibyte); |
4ed46869 | 865 | if (stop < to) |
6ae1f27e RS |
866 | { |
867 | from = stop, from_byte = stop_byte; | |
868 | stop = to, stop_byte = CHAR_TO_BYTE (stop); | |
869 | } | |
4ed46869 KH |
870 | else |
871 | break; | |
872 | } | |
6ae1f27e | 873 | |
4ed46869 | 874 | val = Qnil; |
0282eb69 KH |
875 | undefined = 0; |
876 | for (i = (multibyte ? MAX_CHARSET : 1); i >= 0; i--) | |
4ed46869 | 877 | if (charsets[i]) |
0282eb69 | 878 | { |
99529c2c | 879 | if (CHARSET_DEFINED_P (i)) |
0282eb69 KH |
880 | val = Fcons (CHARSET_SYMBOL (i), val); |
881 | else | |
882 | undefined = 1; | |
883 | } | |
884 | if (undefined) | |
885 | val = Fcons (Qunknown, val); | |
4ed46869 KH |
886 | return val; |
887 | } | |
888 | ||
889 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, | |
23d2a7f1 KH |
890 | 1, 2, 0, |
891 | "Return a list of charsets in STR.\n\ | |
0282eb69 KH |
892 | Optional arg TABLE if non-nil is a translation table to look up.\n\ |
893 | \n\ | |
894 | If the region contains invalid multiybte characters,\n\ | |
895 | `unknown' is included in the returned list.\n\ | |
896 | \n\ | |
897 | If STR is unibyte, the returned list contains\n\ | |
898 | `ascii' if any 7-bit characters are found,\n\ | |
899 | and `unknown' if any 8-bit characters are found.") | |
23d2a7f1 KH |
900 | (str, table) |
901 | Lisp_Object str, table; | |
4ed46869 | 902 | { |
a29e3b1b | 903 | int charsets[MAX_CHARSET + 1]; |
4ed46869 KH |
904 | int i; |
905 | Lisp_Object val; | |
0282eb69 KH |
906 | int undefined; |
907 | int multibyte; | |
4ed46869 KH |
908 | |
909 | CHECK_STRING (str, 0); | |
0282eb69 | 910 | multibyte = STRING_MULTIBYTE (str); |
87b089ad | 911 | |
a29e3b1b | 912 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
fc932ac6 | 913 | find_charset_in_str (XSTRING (str)->data, STRING_BYTES (XSTRING (str)), |
99529c2c | 914 | charsets, table, multibyte); |
4ed46869 | 915 | val = Qnil; |
0282eb69 KH |
916 | undefined = 0; |
917 | for (i = (multibyte ? MAX_CHARSET : 1); i >= 0; i--) | |
4ed46869 | 918 | if (charsets[i]) |
0282eb69 | 919 | { |
99529c2c | 920 | if (CHARSET_DEFINED_P (i)) |
0282eb69 KH |
921 | val = Fcons (CHARSET_SYMBOL (i), val); |
922 | else | |
923 | undefined = 1; | |
924 | } | |
925 | if (undefined) | |
926 | val = Fcons (Qunknown, val); | |
4ed46869 KH |
927 | return val; |
928 | } | |
929 | \f | |
930 | DEFUN ("make-char-internal", Fmake_char_internal, Smake_char_internal, 1, 3, 0, | |
513ee442 | 931 | "") |
4ed46869 KH |
932 | (charset, code1, code2) |
933 | Lisp_Object charset, code1, code2; | |
934 | { | |
ac4137cc KH |
935 | int charset_id, c1, c2; |
936 | ||
4ed46869 | 937 | CHECK_NUMBER (charset, 0); |
ac4137cc KH |
938 | charset_id = XINT (charset); |
939 | if (!CHARSET_DEFINED_P (charset_id)) | |
940 | error ("Invalid charset ID: %d", XINT (charset)); | |
4ed46869 KH |
941 | |
942 | if (NILP (code1)) | |
ac4137cc | 943 | c1 = 0; |
4ed46869 | 944 | else |
ac4137cc KH |
945 | { |
946 | CHECK_NUMBER (code1, 1); | |
947 | c1 = XINT (code1); | |
948 | } | |
4ed46869 | 949 | if (NILP (code2)) |
ac4137cc | 950 | c2 = 0; |
4ed46869 | 951 | else |
ac4137cc KH |
952 | { |
953 | CHECK_NUMBER (code2, 2); | |
954 | c2 = XINT (code2); | |
955 | } | |
4ed46869 | 956 | |
ac4137cc | 957 | if (c1 < 0 || c1 > 0xFF || c2 < 0 || c2 > 0xFF) |
613a8346 | 958 | error ("Invalid code points for charset ID %d: %d %d", charset_id, c1, c2); |
ac4137cc KH |
959 | c1 &= 0x7F; |
960 | c2 &= 0x7F; | |
961 | if (c1 == 0 | |
962 | ? c2 != 0 | |
963 | : (c2 == 0 | |
87f67317 KR |
964 | ? !CHAR_COMPONENTS_VALID_P (charset_id, c1, 0x20) |
965 | : !CHAR_COMPONENTS_VALID_P (charset_id, c1, c2))) | |
613a8346 | 966 | error ("Invalid code points for charset ID %d: %d %d", charset_id, c1, c2); |
ac4137cc KH |
967 | |
968 | return make_number (MAKE_CHAR (charset_id, c1, c2)); | |
4ed46869 KH |
969 | } |
970 | ||
971 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, | |
0282eb69 KH |
972 | "Return list of charset and one or two position-codes of CHAR.\n\ |
973 | If CHAR is invalid as a character code,\n\ | |
974 | return a list of symbol `unknown' and CHAR.") | |
4ed46869 KH |
975 | (ch) |
976 | Lisp_Object ch; | |
977 | { | |
978 | Lisp_Object val; | |
0282eb69 | 979 | int c, charset, c1, c2; |
4ed46869 KH |
980 | |
981 | CHECK_NUMBER (ch, 0); | |
0282eb69 KH |
982 | c = XFASTINT (ch); |
983 | if (!CHAR_VALID_P (c, 1)) | |
984 | return Fcons (Qunknown, Fcons (ch, Qnil)); | |
4ed46869 | 985 | SPLIT_CHAR (XFASTINT (ch), charset, c1, c2); |
6dc0722d | 986 | return (c2 >= 0 |
4ed46869 KH |
987 | ? Fcons (CHARSET_SYMBOL (charset), |
988 | Fcons (make_number (c1), Fcons (make_number (c2), Qnil))) | |
989 | : Fcons (CHARSET_SYMBOL (charset), Fcons (make_number (c1), Qnil))); | |
990 | } | |
991 | ||
992 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0, | |
993 | "Return charset of CHAR.") | |
994 | (ch) | |
995 | Lisp_Object ch; | |
996 | { | |
997 | CHECK_NUMBER (ch, 0); | |
998 | ||
999 | return CHARSET_SYMBOL (CHAR_CHARSET (XINT (ch))); | |
1000 | } | |
1001 | ||
90d7b74e | 1002 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
ac4137cc | 1003 | "Return charset of a character in the current buffer at position POS.\n\ |
e6e114f2 KH |
1004 | If POS is nil, it defauls to the current point.\n\ |
1005 | If POS is out of range, the value is nil.") | |
90d7b74e KH |
1006 | (pos) |
1007 | Lisp_Object pos; | |
1008 | { | |
ac4137cc | 1009 | register int pos_byte, bytes, charset, c1, c2; |
90d7b74e KH |
1010 | register unsigned char *p; |
1011 | ||
1012 | if (NILP (pos)) | |
1013 | pos_byte = PT_BYTE; | |
1014 | else if (MARKERP (pos)) | |
e6e114f2 KH |
1015 | { |
1016 | pos_byte = marker_byte_position (pos); | |
1017 | if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE) | |
1018 | return Qnil; | |
1019 | } | |
90d7b74e KH |
1020 | else |
1021 | { | |
1022 | CHECK_NUMBER (pos, 0); | |
e6e114f2 KH |
1023 | if (XINT (pos) < BEGV || XINT (pos) >= ZV) |
1024 | return Qnil; | |
90d7b74e KH |
1025 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
1026 | } | |
1027 | p = BYTE_POS_ADDR (pos_byte); | |
ac4137cc KH |
1028 | if (BASE_LEADING_CODE_P (*p)) |
1029 | { | |
1030 | SPLIT_MULTIBYTE_SEQ (p, Z_BYTE - pos_byte, bytes, charset, c1, c2); | |
1031 | if (charset < 0) | |
1032 | charset = 1; | |
1033 | } | |
1034 | else | |
1035 | charset = CHARSET_ASCII; | |
1036 | ||
90d7b74e KH |
1037 | return CHARSET_SYMBOL (charset); |
1038 | } | |
1039 | ||
4ed46869 | 1040 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
2b71bb78 KH |
1041 | "Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.\n\ |
1042 | \n\ | |
1043 | ISO 2022's designation sequence (escape sequence) distinguishes charsets\n\ | |
1044 | by their DIMENSION, CHARS, and FINAL-CHAR,\n\ | |
1045 | where as Emacs distinguishes them by charset symbol.\n\ | |
1046 | See the documentation of the function `charset-info' for the meanings of\n\ | |
1047 | DIMENSION, CHARS, and FINAL-CHAR.") | |
4ed46869 KH |
1048 | (dimension, chars, final_char) |
1049 | Lisp_Object dimension, chars, final_char; | |
1050 | { | |
1051 | int charset; | |
1052 | ||
1053 | CHECK_NUMBER (dimension, 0); | |
1054 | CHECK_NUMBER (chars, 1); | |
1055 | CHECK_NUMBER (final_char, 2); | |
1056 | ||
1057 | if ((charset = ISO_CHARSET_TABLE (dimension, chars, final_char)) < 0) | |
1058 | return Qnil; | |
1059 | return CHARSET_SYMBOL (charset); | |
1060 | } | |
1061 | ||
9d3d8cba KH |
1062 | /* If GENERICP is nonzero, return nonzero iff C is a valid normal or |
1063 | generic character. If GENERICP is zero, return nonzero iff C is a | |
1064 | valid normal character. Do not call this function directly, | |
1065 | instead use macro CHAR_VALID_P. */ | |
1066 | int | |
1067 | char_valid_p (c, genericp) | |
1068 | int c, genericp; | |
1069 | { | |
1070 | int charset, c1, c2; | |
1071 | ||
1072 | if (c < 0) | |
1073 | return 0; | |
1074 | if (SINGLE_BYTE_CHAR_P (c)) | |
1075 | return 1; | |
1076 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); | |
ac4137cc KH |
1077 | if (genericp) |
1078 | { | |
1079 | if (c1) | |
1080 | { | |
1081 | if (c2 <= 0) c2 = 0x20; | |
1082 | } | |
1083 | else | |
1084 | { | |
1085 | if (c2 <= 0) c1 = c2 = 0x20; | |
1086 | } | |
1087 | } | |
1088 | return (CHARSET_DEFINED_P (charset) | |
44c6492d | 1089 | && CHAR_COMPONENTS_VALID_P (charset, c1, c2)); |
9d3d8cba KH |
1090 | } |
1091 | ||
1092 | DEFUN ("char-valid-p", Fchar_valid_p, Schar_valid_p, 1, 2, 0, | |
a9d02884 DL |
1093 | "Return t if OBJECT is a valid normal character.\n\ |
1094 | If optional arg GENERICP is non-nil, also return t if OBJECT is\n\ | |
9d3d8cba KH |
1095 | a valid generic character.") |
1096 | (object, genericp) | |
1097 | Lisp_Object object, genericp; | |
1098 | { | |
1099 | if (! NATNUMP (object)) | |
1100 | return Qnil; | |
1101 | return (CHAR_VALID_P (XFASTINT (object), !NILP (genericp)) ? Qt : Qnil); | |
1102 | } | |
1103 | ||
d2665018 KH |
1104 | DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte, |
1105 | Sunibyte_char_to_multibyte, 1, 1, 0, | |
1106 | "Convert the unibyte character CH to multibyte character.\n\ | |
537efd8d | 1107 | The conversion is done based on `nonascii-translation-table' (which see)\n\ |
340b8d58 | 1108 | or `nonascii-insert-offset' (which see).") |
d2665018 KH |
1109 | (ch) |
1110 | Lisp_Object ch; | |
1111 | { | |
1112 | int c; | |
1113 | ||
1114 | CHECK_NUMBER (ch, 0); | |
1115 | c = XINT (ch); | |
1116 | if (c < 0 || c >= 0400) | |
1117 | error ("Invalid unibyte character: %d", c); | |
1118 | c = unibyte_char_to_multibyte (c); | |
1119 | if (c < 0) | |
1120 | error ("Can't convert to multibyte character: %d", XINT (ch)); | |
1121 | return make_number (c); | |
1122 | } | |
1123 | ||
1bcc1567 RS |
1124 | DEFUN ("multibyte-char-to-unibyte", Fmultibyte_char_to_unibyte, |
1125 | Smultibyte_char_to_unibyte, 1, 1, 0, | |
1126 | "Convert the multibyte character CH to unibyte character.\n\ | |
1127 | The conversion is done based on `nonascii-translation-table' (which see)\n\ | |
1128 | or `nonascii-insert-offset' (which see).") | |
1129 | (ch) | |
1130 | Lisp_Object ch; | |
1131 | { | |
1132 | int c; | |
1133 | ||
1134 | CHECK_NUMBER (ch, 0); | |
1135 | c = XINT (ch); | |
ac4137cc | 1136 | if (! CHAR_VALID_P (c, 0)) |
1bcc1567 RS |
1137 | error ("Invalid multibyte character: %d", c); |
1138 | c = multibyte_char_to_unibyte (c, Qnil); | |
1139 | if (c < 0) | |
1140 | error ("Can't convert to unibyte character: %d", XINT (ch)); | |
1141 | return make_number (c); | |
1142 | } | |
1143 | ||
4ed46869 | 1144 | DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0, |
f78643ef | 1145 | "Return 1 regardless of the argument CHAR.\n\ |
60022cb7 | 1146 | This is now an obsolete function. We keep it just for backward compatibility.") |
4ed46869 KH |
1147 | (ch) |
1148 | Lisp_Object ch; | |
1149 | { | |
1150 | Lisp_Object val; | |
4ed46869 KH |
1151 | |
1152 | CHECK_NUMBER (ch, 0); | |
9b6a601f KH |
1153 | return make_number (1); |
1154 | } | |
1155 | ||
1156 | /* Return how many bytes C will occupy in a multibyte buffer. | |
1157 | Don't call this function directly, instead use macro CHAR_BYTES. */ | |
1158 | int | |
1159 | char_bytes (c) | |
1160 | int c; | |
1161 | { | |
99529c2c | 1162 | int charset; |
9b6a601f | 1163 | |
ae87e396 | 1164 | if (SINGLE_BYTE_CHAR_P (c) || (c & ~((1 << CHARACTERBITS) - 1))) |
8ac5a9cc KH |
1165 | return 1; |
1166 | ||
99529c2c KH |
1167 | charset = CHAR_CHARSET (c); |
1168 | return (CHARSET_DEFINED_P (charset) ? CHARSET_BYTES (charset) : 1); | |
4ed46869 KH |
1169 | } |
1170 | ||
1171 | /* Return the width of character of which multi-byte form starts with | |
1172 | C. The width is measured by how many columns occupied on the | |
1173 | screen when displayed in the current buffer. */ | |
1174 | ||
1175 | #define ONE_BYTE_CHAR_WIDTH(c) \ | |
1176 | (c < 0x20 \ | |
1177 | ? (c == '\t' \ | |
53316e55 | 1178 | ? XFASTINT (current_buffer->tab_width) \ |
4ed46869 KH |
1179 | : (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2))) \ |
1180 | : (c < 0x7f \ | |
1181 | ? 1 \ | |
1182 | : (c == 0x7F \ | |
1183 | ? (NILP (current_buffer->ctl_arrow) ? 4 : 2) \ | |
1184 | : ((! NILP (current_buffer->enable_multibyte_characters) \ | |
1185 | && BASE_LEADING_CODE_P (c)) \ | |
1186 | ? WIDTH_BY_CHAR_HEAD (c) \ | |
b4e9dd77 | 1187 | : 4)))) |
4ed46869 KH |
1188 | |
1189 | DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0, | |
1190 | "Return width of CHAR when displayed in the current buffer.\n\ | |
1191 | The width is measured by how many columns it occupies on the screen.") | |
1192 | (ch) | |
1193 | Lisp_Object ch; | |
1194 | { | |
859f2b3c | 1195 | Lisp_Object val, disp; |
4ed46869 | 1196 | int c; |
51c4025f | 1197 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 KH |
1198 | |
1199 | CHECK_NUMBER (ch, 0); | |
1200 | ||
859f2b3c RS |
1201 | c = XINT (ch); |
1202 | ||
1203 | /* Get the way the display table would display it. */ | |
51c4025f | 1204 | disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil; |
859f2b3c RS |
1205 | |
1206 | if (VECTORP (disp)) | |
1207 | XSETINT (val, XVECTOR (disp)->size); | |
1208 | else if (SINGLE_BYTE_CHAR_P (c)) | |
1209 | XSETINT (val, ONE_BYTE_CHAR_WIDTH (c)); | |
4ed46869 KH |
1210 | else |
1211 | { | |
1212 | int charset = CHAR_CHARSET (c); | |
1213 | ||
1214 | XSETFASTINT (val, CHARSET_WIDTH (charset)); | |
1215 | } | |
1216 | return val; | |
1217 | } | |
1218 | ||
1219 | /* Return width of string STR of length LEN when displayed in the | |
1220 | current buffer. The width is measured by how many columns it | |
1221 | occupies on the screen. */ | |
859f2b3c | 1222 | |
4ed46869 KH |
1223 | int |
1224 | strwidth (str, len) | |
1225 | unsigned char *str; | |
1226 | int len; | |
1227 | { | |
1228 | unsigned char *endp = str + len; | |
1229 | int width = 0; | |
c4a4e28f | 1230 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 | 1231 | |
859f2b3c RS |
1232 | while (str < endp) |
1233 | { | |
99529c2c KH |
1234 | Lisp_Object disp; |
1235 | int thislen; | |
1236 | int c = STRING_CHAR_AND_LENGTH (str, endp - str, thislen); | |
859f2b3c | 1237 | |
99529c2c KH |
1238 | /* Get the way the display table would display it. */ |
1239 | if (dp) | |
1240 | disp = DISP_CHAR_VECTOR (dp, c); | |
859f2b3c | 1241 | else |
99529c2c KH |
1242 | disp = Qnil; |
1243 | ||
1244 | if (VECTORP (disp)) | |
1245 | width += XVECTOR (disp)->size; | |
1246 | else | |
1247 | width += ONE_BYTE_CHAR_WIDTH (*str); | |
1248 | ||
1249 | str += thislen; | |
859f2b3c | 1250 | } |
4ed46869 KH |
1251 | return width; |
1252 | } | |
1253 | ||
1254 | DEFUN ("string-width", Fstring_width, Sstring_width, 1, 1, 0, | |
1255 | "Return width of STRING when displayed in the current buffer.\n\ | |
1256 | Width is measured by how many columns it occupies on the screen.\n\ | |
046b1f03 RS |
1257 | When calculating width of a multibyte character in STRING,\n\ |
1258 | only the base leading-code is considered; the validity of\n\ | |
1259 | the following bytes is not checked.") | |
4ed46869 KH |
1260 | (str) |
1261 | Lisp_Object str; | |
1262 | { | |
1263 | Lisp_Object val; | |
1264 | ||
1265 | CHECK_STRING (str, 0); | |
fc932ac6 RS |
1266 | XSETFASTINT (val, strwidth (XSTRING (str)->data, |
1267 | STRING_BYTES (XSTRING (str)))); | |
4ed46869 KH |
1268 | return val; |
1269 | } | |
1270 | ||
1271 | DEFUN ("char-direction", Fchar_direction, Schar_direction, 1, 1, 0, | |
1272 | "Return the direction of CHAR.\n\ | |
1273 | The returned value is 0 for left-to-right and 1 for right-to-left.") | |
1274 | (ch) | |
1275 | Lisp_Object ch; | |
1276 | { | |
1277 | int charset; | |
1278 | ||
1279 | CHECK_NUMBER (ch, 0); | |
1280 | charset = CHAR_CHARSET (XFASTINT (ch)); | |
1281 | if (!CHARSET_DEFINED_P (charset)) | |
93bcb785 | 1282 | invalid_character (XINT (ch)); |
4ed46869 KH |
1283 | return CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX); |
1284 | } | |
1285 | ||
af4fecb4 | 1286 | DEFUN ("chars-in-region", Fchars_in_region, Schars_in_region, 2, 2, 0, |
6ae1f27e | 1287 | "Return number of characters between BEG and END.") |
046b1f03 RS |
1288 | (beg, end) |
1289 | Lisp_Object beg, end; | |
1290 | { | |
6ae1f27e | 1291 | int from, to; |
046b1f03 | 1292 | |
17e7ef1b RS |
1293 | CHECK_NUMBER_COERCE_MARKER (beg, 0); |
1294 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
1295 | ||
046b1f03 | 1296 | from = min (XFASTINT (beg), XFASTINT (end)); |
a8a35e61 | 1297 | to = max (XFASTINT (beg), XFASTINT (end)); |
046b1f03 | 1298 | |
a8c21066 | 1299 | return make_number (to - from); |
6ae1f27e | 1300 | } |
9036eb45 | 1301 | |
87b089ad RS |
1302 | /* Return the number of characters in the NBYTES bytes at PTR. |
1303 | This works by looking at the contents and checking for multibyte sequences. | |
1304 | However, if the current buffer has enable-multibyte-characters = nil, | |
1305 | we treat each byte as a character. */ | |
1306 | ||
6ae1f27e RS |
1307 | int |
1308 | chars_in_text (ptr, nbytes) | |
1309 | unsigned char *ptr; | |
1310 | int nbytes; | |
1311 | { | |
87b089ad RS |
1312 | /* current_buffer is null at early stages of Emacs initialization. */ |
1313 | if (current_buffer == 0 | |
1314 | || NILP (current_buffer->enable_multibyte_characters)) | |
6ae1f27e | 1315 | return nbytes; |
a8a35e61 | 1316 | |
ac4137cc | 1317 | return multibyte_chars_in_text (ptr, nbytes); |
046b1f03 RS |
1318 | } |
1319 | ||
87b089ad RS |
1320 | /* Return the number of characters in the NBYTES bytes at PTR. |
1321 | This works by looking at the contents and checking for multibyte sequences. | |
1322 | It ignores enable-multibyte-characters. */ | |
1323 | ||
1324 | int | |
1325 | multibyte_chars_in_text (ptr, nbytes) | |
1326 | unsigned char *ptr; | |
1327 | int nbytes; | |
1328 | { | |
ac4137cc KH |
1329 | unsigned char *endp; |
1330 | int chars, bytes; | |
87b089ad RS |
1331 | |
1332 | endp = ptr + nbytes; | |
1333 | chars = 0; | |
1334 | ||
1335 | while (ptr < endp) | |
1336 | { | |
ac4137cc KH |
1337 | if (BASE_LEADING_CODE_P (*ptr)) |
1338 | { | |
1339 | PARSE_MULTIBYTE_SEQ (ptr, nbytes, bytes); | |
1340 | ptr += bytes; | |
1341 | nbytes -= bytes; | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | ptr++; | |
1346 | nbytes--; | |
1347 | } | |
87b089ad RS |
1348 | chars++; |
1349 | } | |
1350 | ||
1351 | return chars; | |
1352 | } | |
1353 | ||
1354 | DEFUN ("string", Fstring, Sstring, 1, MANY, 0, | |
4ed46869 | 1355 | "Concatenate all the argument characters and make the result a string.") |
53316e55 KH |
1356 | (n, args) |
1357 | int n; | |
4ed46869 KH |
1358 | Lisp_Object *args; |
1359 | { | |
53316e55 | 1360 | int i; |
99529c2c | 1361 | unsigned char *buf = (unsigned char *) alloca (MAX_MULTIBYTE_LENGTH * n); |
4ed46869 KH |
1362 | unsigned char *p = buf; |
1363 | Lisp_Object val; | |
d0c037d8 | 1364 | int c, multibyte_p = 0; |
4ed46869 KH |
1365 | |
1366 | for (i = 0; i < n; i++) | |
1367 | { | |
d0c037d8 | 1368 | CHECK_NUMBER (args[i], 0); |
4ed46869 | 1369 | c = XINT (args[i]); |
99529c2c | 1370 | p += CHAR_STRING (c, p); |
d0c037d8 GM |
1371 | |
1372 | if (!SINGLE_BYTE_CHAR_P (c)) | |
1373 | multibyte_p = 1; | |
4ed46869 KH |
1374 | } |
1375 | ||
f4db5c4b | 1376 | /* Here, we can't use make_string_from_bytes because of the byte |
d0c037d8 | 1377 | combining problem. Make a multibyte string if there is any |
f4db5c4b | 1378 | multibyte character in ARGS to make sure that `(string 2276)' |
d0c037d8 GM |
1379 | returns a multibyte string if running --unibyte. */ |
1380 | if (multibyte_p) | |
1381 | val = make_multibyte_string (buf, n, p - buf); | |
1382 | else | |
1383 | val = make_unibyte_string (buf, p - buf); | |
4ed46869 KH |
1384 | return val; |
1385 | } | |
1386 | ||
1387 | #endif /* emacs */ | |
1388 | \f | |
dfcf069d | 1389 | int |
4ed46869 KH |
1390 | charset_id_internal (charset_name) |
1391 | char *charset_name; | |
1392 | { | |
76d7b829 | 1393 | Lisp_Object val; |
4ed46869 | 1394 | |
76d7b829 | 1395 | val= Fget (intern (charset_name), Qcharset); |
4ed46869 KH |
1396 | if (!VECTORP (val)) |
1397 | error ("Charset %s is not defined", charset_name); | |
1398 | ||
1399 | return (XINT (XVECTOR (val)->contents[0])); | |
1400 | } | |
1401 | ||
1402 | DEFUN ("setup-special-charsets", Fsetup_special_charsets, | |
1403 | Ssetup_special_charsets, 0, 0, 0, "Internal use only.") | |
1404 | () | |
1405 | { | |
1406 | charset_latin_iso8859_1 = charset_id_internal ("latin-iso8859-1"); | |
1407 | charset_jisx0208_1978 = charset_id_internal ("japanese-jisx0208-1978"); | |
1408 | charset_jisx0208 = charset_id_internal ("japanese-jisx0208"); | |
1409 | charset_katakana_jisx0201 = charset_id_internal ("katakana-jisx0201"); | |
1410 | charset_latin_jisx0201 = charset_id_internal ("latin-jisx0201"); | |
1411 | charset_big5_1 = charset_id_internal ("chinese-big5-1"); | |
1412 | charset_big5_2 = charset_id_internal ("chinese-big5-2"); | |
1413 | return Qnil; | |
1414 | } | |
1415 | ||
dfcf069d | 1416 | void |
4ed46869 KH |
1417 | init_charset_once () |
1418 | { | |
1419 | int i, j, k; | |
1420 | ||
1421 | staticpro (&Vcharset_table); | |
1422 | staticpro (&Vcharset_symbol_table); | |
8a73a704 | 1423 | staticpro (&Vgeneric_character_list); |
4ed46869 KH |
1424 | |
1425 | /* This has to be done here, before we call Fmake_char_table. */ | |
1426 | Qcharset_table = intern ("charset-table"); | |
1427 | staticpro (&Qcharset_table); | |
1428 | ||
1429 | /* Intern this now in case it isn't already done. | |
1430 | Setting this variable twice is harmless. | |
1431 | But don't staticpro it here--that is done in alloc.c. */ | |
1432 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); | |
1433 | ||
1434 | /* Now we are ready to set up this property, so we can | |
1435 | create the charset table. */ | |
1436 | Fput (Qcharset_table, Qchar_table_extra_slots, make_number (0)); | |
1437 | Vcharset_table = Fmake_char_table (Qcharset_table, Qnil); | |
1438 | ||
0282eb69 KH |
1439 | Qunknown = intern ("unknown"); |
1440 | staticpro (&Qunknown); | |
1441 | Vcharset_symbol_table = Fmake_vector (make_number (MAX_CHARSET + 1), | |
1442 | Qunknown); | |
4ed46869 KH |
1443 | |
1444 | /* Setup tables. */ | |
1445 | for (i = 0; i < 2; i++) | |
1446 | for (j = 0; j < 2; j++) | |
1447 | for (k = 0; k < 128; k++) | |
1448 | iso_charset_table [i][j][k] = -1; | |
1449 | ||
60383934 | 1450 | for (i = 0; i < 256; i++) |
4ed46869 | 1451 | BYTES_BY_CHAR_HEAD (i) = 1; |
6ef23ebb KH |
1452 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; |
1453 | i <= MAX_CHARSET_OFFICIAL_DIMENSION1; i++) | |
1454 | BYTES_BY_CHAR_HEAD (i) = 2; | |
1455 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION2; | |
1456 | i <= MAX_CHARSET_OFFICIAL_DIMENSION2; i++) | |
1457 | BYTES_BY_CHAR_HEAD (i) = 3; | |
4ed46869 KH |
1458 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 3; |
1459 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 3; | |
1460 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 4; | |
1461 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 4; | |
6ef23ebb | 1462 | /* The followings don't reflect the actual bytes, but just to tell |
4ed46869 | 1463 | that it is a start of a multibyte character. */ |
99529c2c | 1464 | BYTES_BY_CHAR_HEAD (0x80) = 2; |
6ef23ebb KH |
1465 | BYTES_BY_CHAR_HEAD (0x9E) = 2; |
1466 | BYTES_BY_CHAR_HEAD (0x9F) = 2; | |
4ed46869 KH |
1467 | |
1468 | for (i = 0; i < 128; i++) | |
1469 | WIDTH_BY_CHAR_HEAD (i) = 1; | |
1470 | for (; i < 256; i++) | |
1471 | WIDTH_BY_CHAR_HEAD (i) = 4; | |
1472 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 1; | |
1473 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 2; | |
1474 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 1; | |
1475 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 2; | |
8a73a704 KH |
1476 | |
1477 | { | |
76d7b829 | 1478 | Lisp_Object val; |
8a73a704 | 1479 | |
76d7b829 | 1480 | val = Qnil; |
8a73a704 KH |
1481 | for (i = 0x81; i < 0x90; i++) |
1482 | val = Fcons (make_number ((i - 0x70) << 7), val); | |
1483 | for (; i < 0x9A; i++) | |
1484 | val = Fcons (make_number ((i - 0x8F) << 14), val); | |
1485 | for (i = 0xA0; i < 0xF0; i++) | |
1486 | val = Fcons (make_number ((i - 0x70) << 7), val); | |
1487 | for (; i < 0xFF; i++) | |
1488 | val = Fcons (make_number ((i - 0xE0) << 14), val); | |
8a73a704 KH |
1489 | Vgeneric_character_list = Fnreverse (val); |
1490 | } | |
bbf12bb3 KH |
1491 | |
1492 | nonascii_insert_offset = 0; | |
1493 | Vnonascii_translation_table = Qnil; | |
4ed46869 KH |
1494 | } |
1495 | ||
1496 | #ifdef emacs | |
1497 | ||
dfcf069d | 1498 | void |
4ed46869 KH |
1499 | syms_of_charset () |
1500 | { | |
1501 | Qascii = intern ("ascii"); | |
1502 | staticpro (&Qascii); | |
1503 | ||
1504 | Qcharset = intern ("charset"); | |
1505 | staticpro (&Qcharset); | |
1506 | ||
1507 | /* Define ASCII charset now. */ | |
1508 | update_charset_table (make_number (CHARSET_ASCII), | |
1509 | make_number (1), make_number (94), | |
1510 | make_number (1), | |
1511 | make_number (0), | |
1512 | make_number ('B'), | |
1513 | make_number (0), | |
1514 | build_string ("ASCII"), | |
1515 | build_string ("ASCII"), | |
1516 | build_string ("ASCII (ISO646 IRV)")); | |
1517 | CHARSET_SYMBOL (CHARSET_ASCII) = Qascii; | |
1518 | Fput (Qascii, Qcharset, CHARSET_TABLE_ENTRY (CHARSET_ASCII)); | |
1519 | ||
c1a08b4c KH |
1520 | Qauto_fill_chars = intern ("auto-fill-chars"); |
1521 | staticpro (&Qauto_fill_chars); | |
1522 | Fput (Qauto_fill_chars, Qchar_table_extra_slots, make_number (0)); | |
1523 | ||
4ed46869 | 1524 | defsubr (&Sdefine_charset); |
8a73a704 | 1525 | defsubr (&Sgeneric_character_list); |
3fac5a51 | 1526 | defsubr (&Sget_unused_iso_final_char); |
4ed46869 KH |
1527 | defsubr (&Sdeclare_equiv_charset); |
1528 | defsubr (&Sfind_charset_region); | |
1529 | defsubr (&Sfind_charset_string); | |
1530 | defsubr (&Smake_char_internal); | |
1531 | defsubr (&Ssplit_char); | |
1532 | defsubr (&Schar_charset); | |
90d7b74e | 1533 | defsubr (&Scharset_after); |
4ed46869 | 1534 | defsubr (&Siso_charset); |
9d3d8cba | 1535 | defsubr (&Schar_valid_p); |
d2665018 | 1536 | defsubr (&Sunibyte_char_to_multibyte); |
1bcc1567 | 1537 | defsubr (&Smultibyte_char_to_unibyte); |
4ed46869 KH |
1538 | defsubr (&Schar_bytes); |
1539 | defsubr (&Schar_width); | |
1540 | defsubr (&Sstring_width); | |
1541 | defsubr (&Schar_direction); | |
af4fecb4 | 1542 | defsubr (&Schars_in_region); |
87b089ad | 1543 | defsubr (&Sstring); |
4ed46869 KH |
1544 | defsubr (&Ssetup_special_charsets); |
1545 | ||
1546 | DEFVAR_LISP ("charset-list", &Vcharset_list, | |
1547 | "List of charsets ever defined."); | |
1548 | Vcharset_list = Fcons (Qascii, Qnil); | |
1549 | ||
537efd8d | 1550 | DEFVAR_LISP ("translation-table-vector", &Vtranslation_table_vector, |
b4e9dd77 KH |
1551 | "Vector of cons cell of a symbol and translation table ever defined.\n\ |
1552 | An ID of a translation table is an index of this vector."); | |
537efd8d | 1553 | Vtranslation_table_vector = Fmake_vector (make_number (16), Qnil); |
b0e3cf2b | 1554 | |
4ed46869 KH |
1555 | DEFVAR_INT ("leading-code-private-11", &leading_code_private_11, |
1556 | "Leading-code of private TYPE9N charset of column-width 1."); | |
1557 | leading_code_private_11 = LEADING_CODE_PRIVATE_11; | |
1558 | ||
1559 | DEFVAR_INT ("leading-code-private-12", &leading_code_private_12, | |
1560 | "Leading-code of private TYPE9N charset of column-width 2."); | |
1561 | leading_code_private_12 = LEADING_CODE_PRIVATE_12; | |
1562 | ||
1563 | DEFVAR_INT ("leading-code-private-21", &leading_code_private_21, | |
1564 | "Leading-code of private TYPE9Nx9N charset of column-width 1."); | |
1565 | leading_code_private_21 = LEADING_CODE_PRIVATE_21; | |
1566 | ||
1567 | DEFVAR_INT ("leading-code-private-22", &leading_code_private_22, | |
1568 | "Leading-code of private TYPE9Nx9N charset of column-width 2."); | |
1569 | leading_code_private_22 = LEADING_CODE_PRIVATE_22; | |
35e623fb RS |
1570 | |
1571 | DEFVAR_INT ("nonascii-insert-offset", &nonascii_insert_offset, | |
d2665018 | 1572 | "Offset for converting non-ASCII unibyte codes 0240...0377 to multibyte.\n\ |
4cf9710d RS |
1573 | This is used for converting unibyte text to multibyte,\n\ |
1574 | and for inserting character codes specified by number.\n\n\ | |
3e8ceaac RS |
1575 | This serves to convert a Latin-1 or similar 8-bit character code\n\ |
1576 | to the corresponding Emacs multibyte character code.\n\ | |
1577 | Typically the value should be (- (make-char CHARSET 0) 128),\n\ | |
1578 | for your choice of character set.\n\ | |
537efd8d | 1579 | If `nonascii-translation-table' is non-nil, it overrides this variable."); |
35e623fb | 1580 | nonascii_insert_offset = 0; |
b0e3cf2b | 1581 | |
b4e9dd77 | 1582 | DEFVAR_LISP ("nonascii-translation-table", &Vnonascii_translation_table, |
537efd8d | 1583 | "Translation table to convert non-ASCII unibyte codes to multibyte.\n\ |
4cf9710d RS |
1584 | This is used for converting unibyte text to multibyte,\n\ |
1585 | and for inserting character codes specified by number.\n\n\ | |
1586 | Conversion is performed only when multibyte characters are enabled,\n\ | |
1587 | and it serves to convert a Latin-1 or similar 8-bit character code\n\ | |
1588 | to the corresponding Emacs character code.\n\n\ | |
da4d65af | 1589 | If this is nil, `nonascii-insert-offset' is used instead.\n\ |
b4e9dd77 KH |
1590 | See also the docstring of `make-translation-table'."); |
1591 | Vnonascii_translation_table = Qnil; | |
4cf9710d | 1592 | |
c1a08b4c KH |
1593 | DEFVAR_LISP ("auto-fill-chars", &Vauto_fill_chars, |
1594 | "A char-table for characters which invoke auto-filling.\n\ | |
1595 | Such characters has value t in this table."); | |
1596 | Vauto_fill_chars = Fmake_char_table (Qauto_fill_chars, Qnil); | |
60022cb7 AS |
1597 | CHAR_TABLE_SET (Vauto_fill_chars, make_number (' '), Qt); |
1598 | CHAR_TABLE_SET (Vauto_fill_chars, make_number ('\n'), Qt); | |
4ed46869 KH |
1599 | } |
1600 | ||
1601 | #endif /* emacs */ |