Commit | Line | Data |
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75c8c592 | 1 | /* Basic multilingual character support. |
aaef169d | 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, |
4e6835db | 3 | 2006, 2007 Free Software Foundation, Inc. |
7976eda0 | 4 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
4e6835db | 5 | 2005, 2006, 2007 |
ce03bf76 KH |
6 | National Institute of Advanced Industrial Science and Technology (AIST) |
7 | Registration Number H14PRO021 | |
4ed46869 | 8 | |
369314dc KH |
9 | This file is part of GNU Emacs. |
10 | ||
11 | GNU Emacs is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
1427aa65 | 13 | the Free Software Foundation; either version 3, or (at your option) |
369314dc | 14 | any later version. |
4ed46869 | 15 | |
369314dc KH |
16 | GNU Emacs is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
4ed46869 | 20 | |
369314dc KH |
21 | You should have received a copy of the GNU General Public License |
22 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
23 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | Boston, MA 02110-1301, USA. */ | |
4ed46869 KH |
25 | |
26 | /* At first, see the document in `charset.h' to understand the code in | |
27 | this file. */ | |
28 | ||
68c45bf0 PE |
29 | #ifdef emacs |
30 | #include <config.h> | |
31 | #endif | |
32 | ||
4ed46869 KH |
33 | #include <stdio.h> |
34 | ||
35 | #ifdef emacs | |
36 | ||
37 | #include <sys/types.h> | |
4ed46869 KH |
38 | #include "lisp.h" |
39 | #include "buffer.h" | |
40 | #include "charset.h" | |
3f62427c | 41 | #include "composite.h" |
4ed46869 | 42 | #include "coding.h" |
fc6b09bf | 43 | #include "disptab.h" |
4ed46869 KH |
44 | |
45 | #else /* not emacs */ | |
46 | ||
47 | #include "mulelib.h" | |
48 | ||
49 | #endif /* emacs */ | |
50 | ||
2e344af3 | 51 | Lisp_Object Qcharset, Qascii, Qeight_bit_control, Qeight_bit_graphic; |
0282eb69 | 52 | Lisp_Object Qunknown; |
4ed46869 KH |
53 | |
54 | /* Declaration of special leading-codes. */ | |
4bc26a6c SM |
55 | EMACS_INT leading_code_private_11; /* for private DIMENSION1 of 1-column */ |
56 | EMACS_INT leading_code_private_12; /* for private DIMENSION1 of 2-column */ | |
57 | EMACS_INT leading_code_private_21; /* for private DIMENSION2 of 1-column */ | |
58 | EMACS_INT leading_code_private_22; /* for private DIMENSION2 of 2-column */ | |
4ed46869 | 59 | |
2e344af3 KH |
60 | /* Declaration of special charsets. The values are set by |
61 | Fsetup_special_charsets. */ | |
4ed46869 KH |
62 | int charset_latin_iso8859_1; /* ISO8859-1 (Latin-1) */ |
63 | int charset_jisx0208_1978; /* JISX0208.1978 (Japanese Kanji old set) */ | |
64 | int charset_jisx0208; /* JISX0208.1983 (Japanese Kanji) */ | |
65 | int charset_katakana_jisx0201; /* JISX0201.Kana (Japanese Katakana) */ | |
66 | int charset_latin_jisx0201; /* JISX0201.Roman (Japanese Roman) */ | |
67 | int charset_big5_1; /* Big5 Level 1 (Chinese Traditional) */ | |
68 | int charset_big5_2; /* Big5 Level 2 (Chinese Traditional) */ | |
c64582be KH |
69 | int charset_mule_unicode_0100_24ff; |
70 | int charset_mule_unicode_2500_33ff; | |
71 | int charset_mule_unicode_e000_ffff; | |
4ed46869 KH |
72 | |
73 | Lisp_Object Qcharset_table; | |
74 | ||
75 | /* A char-table containing information of each character set. */ | |
76 | Lisp_Object Vcharset_table; | |
77 | ||
78 | /* A vector of charset symbol indexed by charset-id. This is used | |
79 | only for returning charset symbol from C functions. */ | |
80 | Lisp_Object Vcharset_symbol_table; | |
81 | ||
82 | /* A list of charset symbols ever defined. */ | |
83 | Lisp_Object Vcharset_list; | |
84 | ||
537efd8d KH |
85 | /* Vector of translation table ever defined. |
86 | ID of a translation table is used to index this vector. */ | |
87 | Lisp_Object Vtranslation_table_vector; | |
b0e3cf2b | 88 | |
c1a08b4c KH |
89 | /* A char-table for characters which may invoke auto-filling. */ |
90 | Lisp_Object Vauto_fill_chars; | |
91 | ||
92 | Lisp_Object Qauto_fill_chars; | |
93 | ||
4ed46869 KH |
94 | /* Tables used by macros BYTES_BY_CHAR_HEAD and WIDTH_BY_CHAR_HEAD. */ |
95 | int bytes_by_char_head[256]; | |
96 | int width_by_char_head[256]; | |
97 | ||
98 | /* Mapping table from ISO2022's charset (specified by DIMENSION, | |
99 | CHARS, and FINAL-CHAR) to Emacs' charset. */ | |
100 | int iso_charset_table[2][2][128]; | |
101 | ||
102 | /* Variables used locally in the macro FETCH_MULTIBYTE_CHAR. */ | |
103 | unsigned char *_fetch_multibyte_char_p; | |
104 | int _fetch_multibyte_char_len; | |
105 | ||
35e623fb | 106 | /* Offset to add to a non-ASCII value when inserting it. */ |
31ade731 | 107 | EMACS_INT nonascii_insert_offset; |
35e623fb | 108 | |
4cf9710d RS |
109 | /* Translation table for converting non-ASCII unibyte characters |
110 | to multibyte codes, or nil. */ | |
b4e9dd77 | 111 | Lisp_Object Vnonascii_translation_table; |
4cf9710d | 112 | |
8a73a704 KH |
113 | /* List of all possible generic characters. */ |
114 | Lisp_Object Vgeneric_character_list; | |
115 | ||
046b1f03 | 116 | \f |
93bcb785 KH |
117 | void |
118 | invalid_character (c) | |
119 | int c; | |
120 | { | |
85416bda | 121 | error ("Invalid character: %d, #o%o, #x%x", c, c, c); |
93bcb785 KH |
122 | } |
123 | ||
2e344af3 KH |
124 | /* Parse string STR of length LENGTH and fetch information of a |
125 | character at STR. Set BYTES to the byte length the character | |
126 | occupies, CHARSET, C1, C2 to proper values of the character. */ | |
127 | ||
128 | #define SPLIT_MULTIBYTE_SEQ(str, length, bytes, charset, c1, c2) \ | |
129 | do { \ | |
130 | (c1) = *(str); \ | |
131 | (bytes) = BYTES_BY_CHAR_HEAD (c1); \ | |
132 | if ((bytes) == 1) \ | |
133 | (charset) = ASCII_BYTE_P (c1) ? CHARSET_ASCII : CHARSET_8_BIT_GRAPHIC; \ | |
134 | else if ((bytes) == 2) \ | |
135 | { \ | |
136 | if ((c1) == LEADING_CODE_8_BIT_CONTROL) \ | |
137 | (charset) = CHARSET_8_BIT_CONTROL, (c1) = (str)[1] - 0x20; \ | |
138 | else \ | |
139 | (charset) = (c1), (c1) = (str)[1] & 0x7F; \ | |
140 | } \ | |
141 | else if ((bytes) == 3) \ | |
142 | { \ | |
143 | if ((c1) < LEADING_CODE_PRIVATE_11) \ | |
144 | (charset) = (c1), (c1) = (str)[1] & 0x7F, (c2) = (str)[2] & 0x7F; \ | |
145 | else \ | |
146 | (charset) = (str)[1], (c1) = (str)[2] & 0x7F; \ | |
147 | } \ | |
148 | else \ | |
149 | (charset) = (str)[1], (c1) = (str)[2] & 0x7F, (c2) = (str)[3] & 0x7F; \ | |
ac4137cc KH |
150 | } while (0) |
151 | ||
d37478d0 EZ |
152 | /* 1 if CHARSET, C1, and C2 compose a valid character, else 0. |
153 | Note that this intentionally allows invalid components, such | |
154 | as 0xA0 0xA0, because there exist many files that contain | |
155 | such invalid byte sequences, especially in EUC-GB. */ | |
44c6492d | 156 | #define CHAR_COMPONENTS_VALID_P(charset, c1, c2) \ |
2e344af3 | 157 | ((charset) == CHARSET_ASCII \ |
63f4d579 | 158 | ? ((c1) >= 0 && (c1) <= 0x7F) \ |
2e344af3 KH |
159 | : ((charset) == CHARSET_8_BIT_CONTROL \ |
160 | ? ((c1) >= 0x80 && (c1) <= 0x9F) \ | |
161 | : ((charset) == CHARSET_8_BIT_GRAPHIC \ | |
162 | ? ((c1) >= 0x80 && (c1) <= 0xFF) \ | |
163 | : (CHARSET_DIMENSION (charset) == 1 \ | |
164 | ? ((c1) >= 0x20 && (c1) <= 0x7F) \ | |
165 | : ((c1) >= 0x20 && (c1) <= 0x7F \ | |
166 | && (c2) >= 0x20 && (c2) <= 0x7F))))) | |
93bcb785 | 167 | |
99529c2c KH |
168 | /* Store multi-byte form of the character C in STR. The caller should |
169 | allocate at least 4-byte area at STR in advance. Returns the | |
170 | length of the multi-byte form. If C is an invalid character code, | |
12bcae05 | 171 | return -1. */ |
4ed46869 KH |
172 | |
173 | int | |
12bcae05 | 174 | char_to_string_1 (c, str) |
4ed46869 | 175 | int c; |
99529c2c | 176 | unsigned char *str; |
4ed46869 | 177 | { |
99529c2c KH |
178 | unsigned char *p = str; |
179 | ||
6662e69b | 180 | if (c & CHAR_MODIFIER_MASK) /* This includes the case C is negative. */ |
8ac5a9cc | 181 | { |
6662e69b KH |
182 | /* Multibyte character can't have a modifier bit. */ |
183 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
12bcae05 | 184 | return -1; |
6662e69b KH |
185 | |
186 | /* For Meta, Shift, and Control modifiers, we need special care. */ | |
8ac5a9cc | 187 | if (c & CHAR_META) |
6662e69b KH |
188 | { |
189 | /* Move the meta bit to the right place for a string. */ | |
190 | c = (c & ~CHAR_META) | 0x80; | |
191 | } | |
192 | if (c & CHAR_SHIFT) | |
193 | { | |
194 | /* Shift modifier is valid only with [A-Za-z]. */ | |
195 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
196 | c &= ~CHAR_SHIFT; | |
197 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
198 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
199 | } | |
8ac5a9cc | 200 | if (c & CHAR_CTL) |
6662e69b KH |
201 | { |
202 | /* Simulate the code in lread.c. */ | |
203 | /* Allow `\C- ' and `\C-?'. */ | |
204 | if (c == (CHAR_CTL | ' ')) | |
205 | c = 0; | |
206 | else if (c == (CHAR_CTL | '?')) | |
207 | c = 127; | |
208 | /* ASCII control chars are made from letters (both cases), | |
209 | as well as the non-letters within 0100...0137. */ | |
210 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
211 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
212 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
213 | c &= (037 | (~0177 & ~CHAR_CTL)); | |
214 | } | |
215 | ||
5ef834ea KH |
216 | /* If C still has any modifier bits, just ignore it. */ |
217 | c &= ~CHAR_MODIFIER_MASK; | |
2e344af3 | 218 | } |
177c0ea7 | 219 | |
2e344af3 KH |
220 | if (SINGLE_BYTE_CHAR_P (c)) |
221 | { | |
222 | if (ASCII_BYTE_P (c) || c >= 0xA0) | |
223 | *p++ = c; | |
224 | else | |
225 | { | |
226 | *p++ = LEADING_CODE_8_BIT_CONTROL; | |
227 | *p++ = c + 0x20; | |
228 | } | |
8ac5a9cc | 229 | } |
6ce974d4 | 230 | else if (CHAR_VALID_P (c, 0)) |
4ed46869 | 231 | { |
ac4137cc | 232 | int charset, c1, c2; |
4ed46869 | 233 | |
2e344af3 | 234 | SPLIT_CHAR (c, charset, c1, c2); |
99529c2c KH |
235 | |
236 | if (charset >= LEADING_CODE_EXT_11) | |
237 | *p++ = (charset < LEADING_CODE_EXT_12 | |
238 | ? LEADING_CODE_PRIVATE_11 | |
239 | : (charset < LEADING_CODE_EXT_21 | |
240 | ? LEADING_CODE_PRIVATE_12 | |
241 | : (charset < LEADING_CODE_EXT_22 | |
242 | ? LEADING_CODE_PRIVATE_21 | |
243 | : LEADING_CODE_PRIVATE_22))); | |
244 | *p++ = charset; | |
05ffc44b | 245 | if ((c1 > 0 && c1 < 32) || (c2 > 0 && c2 < 32)) |
12bcae05 | 246 | return -1; |
99529c2c | 247 | if (c1) |
4ed46869 | 248 | { |
99529c2c KH |
249 | *p++ = c1 | 0x80; |
250 | if (c2 > 0) | |
251 | *p++ = c2 | 0x80; | |
4ed46869 KH |
252 | } |
253 | } | |
2e344af3 | 254 | else |
12bcae05 | 255 | return -1; |
4ed46869 | 256 | |
2e344af3 | 257 | return (p - str); |
4ed46869 KH |
258 | } |
259 | ||
12bcae05 GM |
260 | |
261 | /* Store multi-byte form of the character C in STR. The caller should | |
262 | allocate at least 4-byte area at STR in advance. Returns the | |
263 | length of the multi-byte form. If C is an invalid character code, | |
264 | signal an error. | |
265 | ||
266 | Use macro `CHAR_STRING (C, STR)' instead of calling this function | |
267 | directly if C can be an ASCII character. */ | |
268 | ||
269 | int | |
270 | char_to_string (c, str) | |
271 | int c; | |
272 | unsigned char *str; | |
273 | { | |
274 | int len; | |
275 | len = char_to_string_1 (c, str); | |
276 | if (len == -1) | |
277 | invalid_character (c); | |
278 | return len; | |
279 | } | |
280 | ||
281 | ||
44c6492d KH |
282 | /* Return the non-ASCII character corresponding to multi-byte form at |
283 | STR of length LEN. If ACTUAL_LEN is not NULL, store the byte | |
284 | length of the multibyte form in *ACTUAL_LEN. | |
537efd8d | 285 | |
99529c2c KH |
286 | Use macros STRING_CHAR or STRING_CHAR_AND_LENGTH instead of calling |
287 | this function directly if you want ot handle ASCII characters as | |
288 | well. */ | |
4ed46869 | 289 | |
dfcf069d | 290 | int |
99529c2c | 291 | string_to_char (str, len, actual_len) |
8867de67 | 292 | const unsigned char *str; |
ac4137cc | 293 | int len, *actual_len; |
4ed46869 | 294 | { |
ac4137cc | 295 | int c, bytes, charset, c1, c2; |
4ed46869 | 296 | |
ac4137cc KH |
297 | SPLIT_MULTIBYTE_SEQ (str, len, bytes, charset, c1, c2); |
298 | c = MAKE_CHAR (charset, c1, c2); | |
4ed46869 | 299 | if (actual_len) |
ac4137cc | 300 | *actual_len = bytes; |
4ed46869 KH |
301 | return c; |
302 | } | |
303 | ||
44c6492d KH |
304 | /* Return the length of the multi-byte form at string STR of length LEN. |
305 | Use the macro MULTIBYTE_FORM_LENGTH instead. */ | |
4ed46869 KH |
306 | int |
307 | multibyte_form_length (str, len) | |
8867de67 | 308 | const unsigned char *str; |
4ed46869 KH |
309 | int len; |
310 | { | |
ac4137cc | 311 | int bytes; |
4ed46869 | 312 | |
ac4137cc | 313 | PARSE_MULTIBYTE_SEQ (str, len, bytes); |
90d7b74e | 314 | return bytes; |
4ed46869 KH |
315 | } |
316 | ||
ac4137cc KH |
317 | /* Check multibyte form at string STR of length LEN and set variables |
318 | pointed by CHARSET, C1, and C2 to charset and position codes of the | |
319 | character at STR, and return 0. If there's no multibyte character, | |
4ed46869 KH |
320 | return -1. This should be used only in the macro SPLIT_STRING |
321 | which checks range of STR in advance. */ | |
322 | ||
dfcf069d | 323 | int |
99529c2c | 324 | split_string (str, len, charset, c1, c2) |
ac4137cc KH |
325 | const unsigned char *str; |
326 | unsigned char *c1, *c2; | |
327 | int len, *charset; | |
4ed46869 | 328 | { |
ac4137cc | 329 | register int bytes, cs, code1, code2 = -1; |
4ed46869 | 330 | |
ac4137cc KH |
331 | SPLIT_MULTIBYTE_SEQ (str, len, bytes, cs, code1, code2); |
332 | if (cs == CHARSET_ASCII) | |
4ed46869 | 333 | return -1; |
ac4137cc KH |
334 | *charset = cs; |
335 | *c1 = code1; | |
336 | *c2 = code2; | |
5865af0d | 337 | return 0; |
ac4137cc KH |
338 | } |
339 | ||
e0f24100 | 340 | /* Return 1 if character C has valid printable glyph. |
44c6492d | 341 | Use the macro CHAR_PRINTABLE_P instead. */ |
ac4137cc KH |
342 | int |
343 | char_printable_p (c) | |
344 | int c; | |
345 | { | |
8ebae00c | 346 | int charset, c1, c2; |
ac4137cc | 347 | |
2e344af3 | 348 | if (ASCII_BYTE_P (c)) |
ac4137cc | 349 | return 1; |
2e344af3 KH |
350 | else if (SINGLE_BYTE_CHAR_P (c)) |
351 | return 0; | |
352 | else if (c >= MAX_CHAR) | |
99529c2c | 353 | return 0; |
177c0ea7 | 354 | |
2e344af3 | 355 | SPLIT_CHAR (c, charset, c1, c2); |
ac4137cc KH |
356 | if (! CHARSET_DEFINED_P (charset)) |
357 | return 0; | |
358 | if (CHARSET_CHARS (charset) == 94 | |
359 | ? c1 <= 32 || c1 >= 127 | |
360 | : c1 < 32) | |
361 | return 0; | |
362 | if (CHARSET_DIMENSION (charset) == 2 | |
363 | && (CHARSET_CHARS (charset) == 94 | |
364 | ? c2 <= 32 || c2 >= 127 | |
365 | : c2 < 32)) | |
366 | return 0; | |
367 | return 1; | |
4ed46869 KH |
368 | } |
369 | ||
537efd8d | 370 | /* Translate character C by translation table TABLE. If C |
b4e9dd77 KH |
371 | is negative, translate a character specified by CHARSET, C1, and C2 |
372 | (C1 and C2 are code points of the character). If no translation is | |
373 | found in TABLE, return C. */ | |
dfcf069d | 374 | int |
b4e9dd77 | 375 | translate_char (table, c, charset, c1, c2) |
23d2a7f1 KH |
376 | Lisp_Object table; |
377 | int c, charset, c1, c2; | |
378 | { | |
379 | Lisp_Object ch; | |
380 | int alt_charset, alt_c1, alt_c2, dimension; | |
381 | ||
0ad3f83d | 382 | if (c < 0) c = MAKE_CHAR (charset, (c1 & 0x7F) , (c2 & 0x7F)); |
23d2a7f1 | 383 | if (!CHAR_TABLE_P (table) |
ac4137cc | 384 | || (ch = Faref (table, make_number (c)), !NATNUMP (ch))) |
23d2a7f1 KH |
385 | return c; |
386 | ||
387 | SPLIT_CHAR (XFASTINT (ch), alt_charset, alt_c1, alt_c2); | |
388 | dimension = CHARSET_DIMENSION (alt_charset); | |
05ffc44b | 389 | if ((dimension == 1 && alt_c1 > 0) || (dimension == 2 && alt_c2 > 0)) |
23d2a7f1 KH |
390 | /* CH is not a generic character, just return it. */ |
391 | return XFASTINT (ch); | |
392 | ||
393 | /* Since CH is a generic character, we must return a specific | |
394 | charater which has the same position codes as C from CH. */ | |
395 | if (charset < 0) | |
396 | SPLIT_CHAR (c, charset, c1, c2); | |
397 | if (dimension != CHARSET_DIMENSION (charset)) | |
398 | /* We can't make such a character because of dimension mismatch. */ | |
399 | return c; | |
23d2a7f1 KH |
400 | return MAKE_CHAR (alt_charset, c1, c2); |
401 | } | |
402 | ||
d2665018 | 403 | /* Convert the unibyte character C to multibyte based on |
b4e9dd77 | 404 | Vnonascii_translation_table or nonascii_insert_offset. If they can't |
d2665018 KH |
405 | convert C to a valid multibyte character, convert it based on |
406 | DEFAULT_NONASCII_INSERT_OFFSET which makes C a Latin-1 character. */ | |
35e623fb | 407 | |
dfcf069d | 408 | int |
35e623fb RS |
409 | unibyte_char_to_multibyte (c) |
410 | int c; | |
411 | { | |
543b4f61 | 412 | if (c < 0400 && c >= 0200) |
35e623fb | 413 | { |
d2665018 KH |
414 | int c_save = c; |
415 | ||
b4e9dd77 | 416 | if (! NILP (Vnonascii_translation_table)) |
bbf12bb3 KH |
417 | { |
418 | c = XINT (Faref (Vnonascii_translation_table, make_number (c))); | |
ac4137cc | 419 | if (c >= 0400 && ! char_valid_p (c, 0)) |
bbf12bb3 KH |
420 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
421 | } | |
422 | else if (c >= 0240 && nonascii_insert_offset > 0) | |
423 | { | |
424 | c += nonascii_insert_offset; | |
ac4137cc | 425 | if (c < 0400 || ! char_valid_p (c, 0)) |
bbf12bb3 KH |
426 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
427 | } | |
428 | else if (c >= 0240) | |
d2665018 | 429 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
35e623fb RS |
430 | } |
431 | return c; | |
432 | } | |
76d7b829 KH |
433 | |
434 | ||
435 | /* Convert the multibyte character C to unibyte 8-bit character based | |
436 | on Vnonascii_translation_table or nonascii_insert_offset. If | |
437 | REV_TBL is non-nil, it should be a reverse table of | |
438 | Vnonascii_translation_table, i.e. what given by: | |
439 | Fchar_table_extra_slot (Vnonascii_translation_table, make_number (0)) */ | |
440 | ||
441 | int | |
442 | multibyte_char_to_unibyte (c, rev_tbl) | |
443 | int c; | |
444 | Lisp_Object rev_tbl; | |
445 | { | |
446 | if (!SINGLE_BYTE_CHAR_P (c)) | |
447 | { | |
448 | int c_save = c; | |
449 | ||
450 | if (! CHAR_TABLE_P (rev_tbl) | |
451 | && CHAR_TABLE_P (Vnonascii_translation_table)) | |
452 | rev_tbl = Fchar_table_extra_slot (Vnonascii_translation_table, | |
453 | make_number (0)); | |
454 | if (CHAR_TABLE_P (rev_tbl)) | |
455 | { | |
456 | Lisp_Object temp; | |
457 | temp = Faref (rev_tbl, make_number (c)); | |
458 | if (INTEGERP (temp)) | |
459 | c = XINT (temp); | |
bbf12bb3 KH |
460 | if (c >= 256) |
461 | c = (c_save & 0177) + 0200; | |
462 | } | |
463 | else | |
464 | { | |
465 | if (nonascii_insert_offset > 0) | |
466 | c -= nonascii_insert_offset; | |
467 | if (c < 128 || c >= 256) | |
468 | c = (c_save & 0177) + 0200; | |
76d7b829 | 469 | } |
76d7b829 KH |
470 | } |
471 | ||
472 | return c; | |
473 | } | |
474 | ||
35e623fb | 475 | \f |
4ed46869 KH |
476 | /* Update the table Vcharset_table with the given arguments (see the |
477 | document of `define-charset' for the meaning of each argument). | |
478 | Several other table contents are also updated. The caller should | |
479 | check the validity of CHARSET-ID and the remaining arguments in | |
480 | advance. */ | |
481 | ||
482 | void | |
483 | update_charset_table (charset_id, dimension, chars, width, direction, | |
484 | iso_final_char, iso_graphic_plane, | |
485 | short_name, long_name, description) | |
486 | Lisp_Object charset_id, dimension, chars, width, direction; | |
487 | Lisp_Object iso_final_char, iso_graphic_plane; | |
488 | Lisp_Object short_name, long_name, description; | |
489 | { | |
490 | int charset = XINT (charset_id); | |
491 | int bytes; | |
492 | unsigned char leading_code_base, leading_code_ext; | |
493 | ||
6dc0722d KH |
494 | if (NILP (CHARSET_TABLE_ENTRY (charset))) |
495 | CHARSET_TABLE_ENTRY (charset) | |
496 | = Fmake_vector (make_number (CHARSET_MAX_IDX), Qnil); | |
4ed46869 | 497 | |
d78bc582 KH |
498 | if (NILP (long_name)) |
499 | long_name = short_name; | |
500 | if (NILP (description)) | |
501 | description = long_name; | |
502 | ||
4ed46869 KH |
503 | /* Get byte length of multibyte form, base leading-code, and |
504 | extended leading-code of the charset. See the comment under the | |
505 | title "GENERAL NOTE on CHARACTER SET (CHARSET)" in charset.h. */ | |
506 | bytes = XINT (dimension); | |
507 | if (charset < MIN_CHARSET_PRIVATE_DIMENSION1) | |
508 | { | |
509 | /* Official charset, it doesn't have an extended leading-code. */ | |
2e344af3 | 510 | if (charset != CHARSET_ASCII && charset != CHARSET_8_BIT_GRAPHIC) |
4ed46869 KH |
511 | bytes += 1; /* For a base leading-code. */ |
512 | leading_code_base = charset; | |
513 | leading_code_ext = 0; | |
514 | } | |
515 | else | |
516 | { | |
517 | /* Private charset. */ | |
518 | bytes += 2; /* For base and extended leading-codes. */ | |
519 | leading_code_base | |
520 | = (charset < LEADING_CODE_EXT_12 | |
521 | ? LEADING_CODE_PRIVATE_11 | |
522 | : (charset < LEADING_CODE_EXT_21 | |
523 | ? LEADING_CODE_PRIVATE_12 | |
524 | : (charset < LEADING_CODE_EXT_22 | |
525 | ? LEADING_CODE_PRIVATE_21 | |
526 | : LEADING_CODE_PRIVATE_22))); | |
527 | leading_code_ext = charset; | |
c83ef371 KH |
528 | if (BYTES_BY_CHAR_HEAD (leading_code_base) != bytes) |
529 | error ("Invalid dimension for the charset-ID %d", charset); | |
530 | } | |
6ef23ebb | 531 | |
4ed46869 KH |
532 | CHARSET_TABLE_INFO (charset, CHARSET_ID_IDX) = charset_id; |
533 | CHARSET_TABLE_INFO (charset, CHARSET_BYTES_IDX) = make_number (bytes); | |
534 | CHARSET_TABLE_INFO (charset, CHARSET_DIMENSION_IDX) = dimension; | |
535 | CHARSET_TABLE_INFO (charset, CHARSET_CHARS_IDX) = chars; | |
536 | CHARSET_TABLE_INFO (charset, CHARSET_WIDTH_IDX) = width; | |
537 | CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX) = direction; | |
538 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_BASE_IDX) | |
539 | = make_number (leading_code_base); | |
540 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_EXT_IDX) | |
541 | = make_number (leading_code_ext); | |
542 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_FINAL_CHAR_IDX) = iso_final_char; | |
543 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_GRAPHIC_PLANE_IDX) | |
544 | = iso_graphic_plane; | |
545 | CHARSET_TABLE_INFO (charset, CHARSET_SHORT_NAME_IDX) = short_name; | |
546 | CHARSET_TABLE_INFO (charset, CHARSET_LONG_NAME_IDX) = long_name; | |
547 | CHARSET_TABLE_INFO (charset, CHARSET_DESCRIPTION_IDX) = description; | |
548 | CHARSET_TABLE_INFO (charset, CHARSET_PLIST_IDX) = Qnil; | |
549 | ||
550 | { | |
551 | /* If we have already defined a charset which has the same | |
552 | DIMENSION, CHARS and ISO-FINAL-CHAR but the different | |
553 | DIRECTION, we must update the entry REVERSE-CHARSET of both | |
554 | charsets. If there's no such charset, the value of the entry | |
555 | is set to nil. */ | |
556 | int i; | |
557 | ||
513ee442 | 558 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
559 | if (!NILP (CHARSET_TABLE_ENTRY (i))) |
560 | { | |
561 | if (CHARSET_DIMENSION (i) == XINT (dimension) | |
562 | && CHARSET_CHARS (i) == XINT (chars) | |
563 | && CHARSET_ISO_FINAL_CHAR (i) == XINT (iso_final_char) | |
564 | && CHARSET_DIRECTION (i) != XINT (direction)) | |
565 | { | |
566 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
567 | = make_number (i); | |
568 | CHARSET_TABLE_INFO (i, CHARSET_REVERSE_CHARSET_IDX) = charset_id; | |
569 | break; | |
570 | } | |
571 | } | |
513ee442 | 572 | if (i > MAX_CHARSET) |
4ed46869 KH |
573 | /* No such a charset. */ |
574 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) | |
575 | = make_number (-1); | |
576 | } | |
577 | ||
c83ef371 | 578 | if (charset != CHARSET_ASCII && charset != CHARSET_8_BIT_GRAPHIC |
4ed46869 KH |
579 | && charset < MIN_CHARSET_PRIVATE_DIMENSION1) |
580 | { | |
c83ef371 | 581 | bytes_by_char_head[leading_code_base] = bytes; |
4ed46869 KH |
582 | width_by_char_head[leading_code_base] = XINT (width); |
583 | ||
584 | /* Update table emacs_code_class. */ | |
585 | emacs_code_class[charset] = (bytes == 2 | |
586 | ? EMACS_leading_code_2 | |
587 | : (bytes == 3 | |
588 | ? EMACS_leading_code_3 | |
589 | : EMACS_leading_code_4)); | |
590 | } | |
591 | ||
592 | /* Update table iso_charset_table. */ | |
52e386c2 | 593 | if (XINT (iso_final_char) >= 0 |
2e344af3 | 594 | && ISO_CHARSET_TABLE (dimension, chars, iso_final_char) < 0) |
4ed46869 KH |
595 | ISO_CHARSET_TABLE (dimension, chars, iso_final_char) = charset; |
596 | } | |
597 | ||
598 | #ifdef emacs | |
599 | ||
600 | /* Return charset id of CHARSET_SYMBOL, or return -1 if CHARSET_SYMBOL | |
601 | is invalid. */ | |
602 | int | |
603 | get_charset_id (charset_symbol) | |
604 | Lisp_Object charset_symbol; | |
605 | { | |
606 | Lisp_Object val; | |
607 | int charset; | |
608 | ||
1a45ff10 EZ |
609 | /* This originally used a ?: operator, but reportedly the HP-UX |
610 | compiler version HP92453-01 A.10.32.22 miscompiles that. */ | |
611 | if (SYMBOLP (charset_symbol) | |
612 | && VECTORP (val = Fget (charset_symbol, Qcharset)) | |
613 | && CHARSET_VALID_P (charset = | |
614 | XINT (XVECTOR (val)->contents[CHARSET_ID_IDX]))) | |
615 | return charset; | |
616 | else | |
617 | return -1; | |
4ed46869 KH |
618 | } |
619 | ||
620 | /* Return an identification number for a new private charset of | |
621 | DIMENSION and WIDTH. If there's no more room for the new charset, | |
622 | return 0. */ | |
623 | Lisp_Object | |
624 | get_new_private_charset_id (dimension, width) | |
625 | int dimension, width; | |
626 | { | |
627 | int charset, from, to; | |
628 | ||
629 | if (dimension == 1) | |
630 | { | |
3bb7b08b KH |
631 | from = LEADING_CODE_EXT_11; |
632 | to = LEADING_CODE_EXT_21; | |
4ed46869 KH |
633 | } |
634 | else | |
635 | { | |
3bb7b08b KH |
636 | from = LEADING_CODE_EXT_21; |
637 | to = LEADING_CODE_EXT_MAX + 1; | |
4ed46869 KH |
638 | } |
639 | ||
640 | for (charset = from; charset < to; charset++) | |
641 | if (!CHARSET_DEFINED_P (charset)) break; | |
642 | ||
643 | return make_number (charset < to ? charset : 0); | |
644 | } | |
645 | ||
646 | DEFUN ("define-charset", Fdefine_charset, Sdefine_charset, 3, 3, 0, | |
fdb82f93 PJ |
647 | doc: /* Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR. |
648 | If CHARSET-ID is nil, it is decided automatically, which means CHARSET is | |
649 | treated as a private charset. | |
650 | INFO-VECTOR is a vector of the format: | |
651 | [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE | |
652 | SHORT-NAME LONG-NAME DESCRIPTION] | |
653 | The meanings of each elements is as follows: | |
654 | DIMENSION (integer) is the number of bytes to represent a character: 1 or 2. | |
655 | CHARS (integer) is the number of characters in a dimension: 94 or 96. | |
656 | WIDTH (integer) is the number of columns a character in the charset | |
657 | occupies on the screen: one of 0, 1, and 2. | |
658 | ||
659 | DIRECTION (integer) is the rendering direction of characters in the | |
660 | charset when rendering. If 0, render from left to right, else | |
661 | render from right to left. | |
662 | ||
663 | ISO-FINAL-CHAR (character) is the final character of the | |
664 | corresponding ISO 2022 charset. | |
665 | It may be -1 if the charset is internal use only. | |
666 | ||
667 | ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked | |
668 | while encoding to variants of ISO 2022 coding system, one of the | |
669 | following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR). | |
670 | It may be -1 if the charset is internal use only. | |
671 | ||
672 | SHORT-NAME (string) is the short name to refer to the charset. | |
673 | ||
674 | LONG-NAME (string) is the long name to refer to the charset. | |
675 | ||
676 | DESCRIPTION (string) is the description string of the charset. */) | |
677 | (charset_id, charset_symbol, info_vector) | |
4ed46869 KH |
678 | Lisp_Object charset_id, charset_symbol, info_vector; |
679 | { | |
680 | Lisp_Object *vec; | |
681 | ||
682 | if (!NILP (charset_id)) | |
b7826503 PJ |
683 | CHECK_NUMBER (charset_id); |
684 | CHECK_SYMBOL (charset_symbol); | |
685 | CHECK_VECTOR (info_vector); | |
4ed46869 KH |
686 | |
687 | if (! NILP (charset_id)) | |
688 | { | |
689 | if (! CHARSET_VALID_P (XINT (charset_id))) | |
690 | error ("Invalid CHARSET: %d", XINT (charset_id)); | |
691 | else if (CHARSET_DEFINED_P (XINT (charset_id))) | |
692 | error ("Already defined charset: %d", XINT (charset_id)); | |
693 | } | |
694 | ||
695 | vec = XVECTOR (info_vector)->contents; | |
696 | if (XVECTOR (info_vector)->size != 9 | |
697 | || !INTEGERP (vec[0]) || !(XINT (vec[0]) == 1 || XINT (vec[0]) == 2) | |
698 | || !INTEGERP (vec[1]) || !(XINT (vec[1]) == 94 || XINT (vec[1]) == 96) | |
699 | || !INTEGERP (vec[2]) || !(XINT (vec[2]) == 1 || XINT (vec[2]) == 2) | |
700 | || !INTEGERP (vec[3]) || !(XINT (vec[3]) == 0 || XINT (vec[3]) == 1) | |
2e344af3 | 701 | || !INTEGERP (vec[4]) |
05ffc44b | 702 | || !(XINT (vec[4]) == -1 || (XINT (vec[4]) >= '0' && XINT (vec[4]) <= '~')) |
2e344af3 KH |
703 | || !INTEGERP (vec[5]) |
704 | || !(XINT (vec[5]) == -1 || XINT (vec[5]) == 0 || XINT (vec[5]) == 1) | |
4ed46869 KH |
705 | || !STRINGP (vec[6]) |
706 | || !STRINGP (vec[7]) | |
707 | || !STRINGP (vec[8])) | |
708 | error ("Invalid info-vector argument for defining charset %s", | |
d5db4077 | 709 | SDATA (SYMBOL_NAME (charset_symbol))); |
4ed46869 KH |
710 | |
711 | if (NILP (charset_id)) | |
712 | { | |
713 | charset_id = get_new_private_charset_id (XINT (vec[0]), XINT (vec[2])); | |
714 | if (XINT (charset_id) == 0) | |
715 | error ("There's no room for a new private charset %s", | |
d5db4077 | 716 | SDATA (SYMBOL_NAME (charset_symbol))); |
4ed46869 KH |
717 | } |
718 | ||
719 | update_charset_table (charset_id, vec[0], vec[1], vec[2], vec[3], | |
720 | vec[4], vec[5], vec[6], vec[7], vec[8]); | |
6dc0722d | 721 | Fput (charset_symbol, Qcharset, CHARSET_TABLE_ENTRY (XINT (charset_id))); |
4ed46869 KH |
722 | CHARSET_SYMBOL (XINT (charset_id)) = charset_symbol; |
723 | Vcharset_list = Fcons (charset_symbol, Vcharset_list); | |
538482ab | 724 | Fupdate_coding_systems_internal (); |
4ed46869 KH |
725 | return Qnil; |
726 | } | |
727 | ||
8a73a704 KH |
728 | DEFUN ("generic-character-list", Fgeneric_character_list, |
729 | Sgeneric_character_list, 0, 0, 0, | |
fdb82f93 PJ |
730 | doc: /* Return a list of all possible generic characters. |
731 | It includes a generic character for a charset not yet defined. */) | |
732 | () | |
8a73a704 KH |
733 | { |
734 | return Vgeneric_character_list; | |
735 | } | |
736 | ||
3fac5a51 KH |
737 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
738 | Sget_unused_iso_final_char, 2, 2, 0, | |
bc001814 | 739 | doc: /* Return an unused ISO's final char for a charset of DIMENSION and CHARS. |
fdb82f93 PJ |
740 | DIMENSION is the number of bytes to represent a character: 1 or 2. |
741 | CHARS is the number of characters in a dimension: 94 or 96. | |
742 | ||
743 | This final char is for private use, thus the range is `0' (48) .. `?' (63). | |
744 | If there's no unused final char for the specified kind of charset, | |
745 | return nil. */) | |
746 | (dimension, chars) | |
3fac5a51 KH |
747 | Lisp_Object dimension, chars; |
748 | { | |
749 | int final_char; | |
750 | ||
b7826503 PJ |
751 | CHECK_NUMBER (dimension); |
752 | CHECK_NUMBER (chars); | |
3fac5a51 KH |
753 | if (XINT (dimension) != 1 && XINT (dimension) != 2) |
754 | error ("Invalid charset dimension %d, it should be 1 or 2", | |
755 | XINT (dimension)); | |
756 | if (XINT (chars) != 94 && XINT (chars) != 96) | |
757 | error ("Invalid charset chars %d, it should be 94 or 96", | |
758 | XINT (chars)); | |
759 | for (final_char = '0'; final_char <= '?'; final_char++) | |
760 | { | |
761 | if (ISO_CHARSET_TABLE (dimension, chars, make_number (final_char)) < 0) | |
762 | break; | |
763 | } | |
764 | return (final_char <= '?' ? make_number (final_char) : Qnil); | |
765 | } | |
766 | ||
4ed46869 KH |
767 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, |
768 | 4, 4, 0, | |
74ac5074 KH |
769 | doc: /* Declare an equivalent charset for ISO-2022 decoding. |
770 | ||
771 | On decoding by an ISO-2022 base coding system, when a charset | |
772 | specified by DIMENSION, CHARS, and FINAL-CHAR is designated, behave as | |
773 | if CHARSET is designated instead. */) | |
774 | (dimension, chars, final_char, charset) | |
775 | Lisp_Object dimension, chars, final_char, charset; | |
4ed46869 | 776 | { |
74ac5074 | 777 | int charset_id; |
4ed46869 | 778 | |
b7826503 PJ |
779 | CHECK_NUMBER (dimension); |
780 | CHECK_NUMBER (chars); | |
781 | CHECK_NUMBER (final_char); | |
74ac5074 | 782 | CHECK_SYMBOL (charset); |
4ed46869 KH |
783 | |
784 | if (XINT (dimension) != 1 && XINT (dimension) != 2) | |
785 | error ("Invalid DIMENSION %d, it should be 1 or 2", XINT (dimension)); | |
786 | if (XINT (chars) != 94 && XINT (chars) != 96) | |
787 | error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars)); | |
788 | if (XINT (final_char) < '0' || XFASTINT (final_char) > '~') | |
789 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars)); | |
74ac5074 KH |
790 | if ((charset_id = get_charset_id (charset)) < 0) |
791 | error ("Invalid charset %s", SDATA (SYMBOL_NAME (charset))); | |
4ed46869 | 792 | |
74ac5074 | 793 | ISO_CHARSET_TABLE (dimension, chars, final_char) = charset_id; |
4ed46869 KH |
794 | return Qnil; |
795 | } | |
796 | ||
2e344af3 KH |
797 | /* Return information about charsets in the text at PTR of NBYTES |
798 | bytes, which are NCHARS characters. The value is: | |
f6302ac9 | 799 | |
cfe34140 | 800 | 0: Each character is represented by one byte. This is always |
f6302ac9 | 801 | true for unibyte text. |
2e344af3 KH |
802 | 1: No charsets other than ascii eight-bit-control, |
803 | eight-bit-graphic, and latin-1 are found. | |
804 | 2: Otherwise. | |
1d67c29b | 805 | |
2e344af3 KH |
806 | In addition, if CHARSETS is nonzero, for each found charset N, set |
807 | CHARSETS[N] to 1. For that, callers should allocate CHARSETS | |
808 | (MAX_CHARSET + 1 elements) in advance. It may lookup a translation | |
809 | table TABLE if supplied. For invalid charsets, set CHARSETS[1] to | |
810 | 1 (note that there's no charset whose ID is 1). */ | |
4ed46869 KH |
811 | |
812 | int | |
2e344af3 | 813 | find_charset_in_text (ptr, nchars, nbytes, charsets, table) |
fb4f7f50 | 814 | const unsigned char *ptr; |
2e344af3 | 815 | int nchars, nbytes, *charsets; |
23d2a7f1 | 816 | Lisp_Object table; |
4ed46869 | 817 | { |
2e344af3 | 818 | if (nchars == nbytes) |
0282eb69 | 819 | { |
2e344af3 | 820 | if (charsets && nbytes > 0) |
0282eb69 | 821 | { |
fb4f7f50 | 822 | const unsigned char *endp = ptr + nbytes; |
2e344af3 KH |
823 | int maskbits = 0; |
824 | ||
825 | while (ptr < endp && maskbits != 7) | |
826 | { | |
827 | maskbits |= (*ptr < 0x80 ? 1 : *ptr < 0xA0 ? 2 : 4); | |
828 | ptr++; | |
177c0ea7 | 829 | } |
2e344af3 KH |
830 | |
831 | if (maskbits & 1) | |
832 | charsets[CHARSET_ASCII] = 1; | |
833 | if (maskbits & 2) | |
834 | charsets[CHARSET_8_BIT_CONTROL] = 1; | |
835 | if (maskbits & 4) | |
836 | charsets[CHARSET_8_BIT_GRAPHIC] = 1; | |
0282eb69 | 837 | } |
2e344af3 | 838 | return 0; |
0282eb69 | 839 | } |
2e344af3 | 840 | else |
4ed46869 | 841 | { |
2e344af3 | 842 | int return_val = 1; |
99529c2c | 843 | int bytes, charset, c1, c2; |
05505664 | 844 | |
2e344af3 KH |
845 | if (! CHAR_TABLE_P (table)) |
846 | table = Qnil; | |
05505664 | 847 | |
2e344af3 | 848 | while (nchars-- > 0) |
23d2a7f1 | 849 | { |
2e344af3 KH |
850 | SPLIT_MULTIBYTE_SEQ (ptr, len, bytes, charset, c1, c2); |
851 | ptr += bytes; | |
4ed46869 | 852 | |
2e344af3 KH |
853 | if (!CHARSET_DEFINED_P (charset)) |
854 | charset = 1; | |
855 | else if (! NILP (table)) | |
856 | { | |
857 | int c = translate_char (table, -1, charset, c1, c2); | |
858 | if (c >= 0) | |
859 | charset = CHAR_CHARSET (c); | |
860 | } | |
861 | ||
862 | if (return_val == 1 | |
863 | && charset != CHARSET_ASCII | |
864 | && charset != CHARSET_8_BIT_CONTROL | |
865 | && charset != CHARSET_8_BIT_GRAPHIC | |
866 | && charset != charset_latin_iso8859_1) | |
867 | return_val = 2; | |
868 | ||
869 | if (charsets) | |
870 | charsets[charset] = 1; | |
871 | else if (return_val == 2) | |
872 | break; | |
4ed46869 | 873 | } |
2e344af3 | 874 | return return_val; |
4ed46869 | 875 | } |
4ed46869 KH |
876 | } |
877 | ||
878 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, | |
23d2a7f1 | 879 | 2, 3, 0, |
fdb82f93 PJ |
880 | doc: /* Return a list of charsets in the region between BEG and END. |
881 | BEG and END are buffer positions. | |
882 | Optional arg TABLE if non-nil is a translation table to look up. | |
883 | ||
884 | If the region contains invalid multibyte characters, | |
885 | `unknown' is included in the returned list. | |
886 | ||
887 | If the current buffer is unibyte, the returned list may contain | |
888 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) | |
889 | (beg, end, table) | |
23d2a7f1 | 890 | Lisp_Object beg, end, table; |
4ed46869 | 891 | { |
028d516b | 892 | int charsets[MAX_CHARSET + 1]; |
6ae1f27e | 893 | int from, from_byte, to, stop, stop_byte, i; |
4ed46869 KH |
894 | Lisp_Object val; |
895 | ||
896 | validate_region (&beg, &end); | |
897 | from = XFASTINT (beg); | |
898 | stop = to = XFASTINT (end); | |
6ae1f27e | 899 | |
4ed46869 | 900 | if (from < GPT && GPT < to) |
6ae1f27e RS |
901 | { |
902 | stop = GPT; | |
903 | stop_byte = GPT_BYTE; | |
904 | } | |
905 | else | |
906 | stop_byte = CHAR_TO_BYTE (stop); | |
907 | ||
908 | from_byte = CHAR_TO_BYTE (from); | |
909 | ||
028d516b | 910 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
4ed46869 KH |
911 | while (1) |
912 | { | |
2e344af3 KH |
913 | find_charset_in_text (BYTE_POS_ADDR (from_byte), stop - from, |
914 | stop_byte - from_byte, charsets, table); | |
4ed46869 | 915 | if (stop < to) |
6ae1f27e RS |
916 | { |
917 | from = stop, from_byte = stop_byte; | |
918 | stop = to, stop_byte = CHAR_TO_BYTE (stop); | |
919 | } | |
4ed46869 KH |
920 | else |
921 | break; | |
922 | } | |
6ae1f27e | 923 | |
4ed46869 | 924 | val = Qnil; |
2e344af3 | 925 | if (charsets[1]) |
0282eb69 | 926 | val = Fcons (Qunknown, val); |
2e344af3 KH |
927 | for (i = MAX_CHARSET; i >= MIN_CHARSET_OFFICIAL_DIMENSION1; i--) |
928 | if (charsets[i]) | |
929 | val = Fcons (CHARSET_SYMBOL (i), val); | |
930 | if (charsets[0]) | |
931 | val = Fcons (Qascii, val); | |
4ed46869 KH |
932 | return val; |
933 | } | |
934 | ||
935 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, | |
23d2a7f1 | 936 | 1, 2, 0, |
fdb82f93 PJ |
937 | doc: /* Return a list of charsets in STR. |
938 | Optional arg TABLE if non-nil is a translation table to look up. | |
939 | ||
940 | If the string contains invalid multibyte characters, | |
941 | `unknown' is included in the returned list. | |
942 | ||
943 | If STR is unibyte, the returned list may contain | |
944 | only `ascii', `eight-bit-control', and `eight-bit-graphic'. */) | |
945 | (str, table) | |
23d2a7f1 | 946 | Lisp_Object str, table; |
4ed46869 | 947 | { |
a29e3b1b | 948 | int charsets[MAX_CHARSET + 1]; |
4ed46869 KH |
949 | int i; |
950 | Lisp_Object val; | |
951 | ||
b7826503 | 952 | CHECK_STRING (str); |
87b089ad | 953 | |
a29e3b1b | 954 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
d5db4077 KR |
955 | find_charset_in_text (SDATA (str), SCHARS (str), |
956 | SBYTES (str), charsets, table); | |
2e344af3 | 957 | |
4ed46869 | 958 | val = Qnil; |
2e344af3 | 959 | if (charsets[1]) |
0282eb69 | 960 | val = Fcons (Qunknown, val); |
2e344af3 KH |
961 | for (i = MAX_CHARSET; i >= MIN_CHARSET_OFFICIAL_DIMENSION1; i--) |
962 | if (charsets[i]) | |
963 | val = Fcons (CHARSET_SYMBOL (i), val); | |
964 | if (charsets[0]) | |
965 | val = Fcons (Qascii, val); | |
4ed46869 KH |
966 | return val; |
967 | } | |
2e344af3 | 968 | |
4ed46869 KH |
969 | \f |
970 | DEFUN ("make-char-internal", Fmake_char_internal, Smake_char_internal, 1, 3, 0, | |
fdb82f93 PJ |
971 | doc: /* Return a character made from arguments. |
972 | Internal use only. */) | |
973 | (charset, code1, code2) | |
4ed46869 KH |
974 | Lisp_Object charset, code1, code2; |
975 | { | |
ac4137cc KH |
976 | int charset_id, c1, c2; |
977 | ||
b7826503 | 978 | CHECK_NUMBER (charset); |
ac4137cc KH |
979 | charset_id = XINT (charset); |
980 | if (!CHARSET_DEFINED_P (charset_id)) | |
981 | error ("Invalid charset ID: %d", XINT (charset)); | |
4ed46869 KH |
982 | |
983 | if (NILP (code1)) | |
ac4137cc | 984 | c1 = 0; |
4ed46869 | 985 | else |
ac4137cc | 986 | { |
b7826503 | 987 | CHECK_NUMBER (code1); |
ac4137cc KH |
988 | c1 = XINT (code1); |
989 | } | |
4ed46869 | 990 | if (NILP (code2)) |
ac4137cc | 991 | c2 = 0; |
4ed46869 | 992 | else |
ac4137cc | 993 | { |
b7826503 | 994 | CHECK_NUMBER (code2); |
ac4137cc KH |
995 | c2 = XINT (code2); |
996 | } | |
4ed46869 | 997 | |
2e344af3 KH |
998 | if (charset_id == CHARSET_ASCII) |
999 | { | |
1000 | if (c1 < 0 || c1 > 0x7F) | |
1001 | goto invalid_code_posints; | |
1002 | return make_number (c1); | |
1003 | } | |
1004 | else if (charset_id == CHARSET_8_BIT_CONTROL) | |
1005 | { | |
30736012 KH |
1006 | if (NILP (code1)) |
1007 | c1 = 0x80; | |
1008 | else if (c1 < 0x80 || c1 > 0x9F) | |
2e344af3 KH |
1009 | goto invalid_code_posints; |
1010 | return make_number (c1); | |
1011 | } | |
1012 | else if (charset_id == CHARSET_8_BIT_GRAPHIC) | |
1013 | { | |
30736012 KH |
1014 | if (NILP (code1)) |
1015 | c1 = 0xA0; | |
1016 | else if (c1 < 0xA0 || c1 > 0xFF) | |
2e344af3 KH |
1017 | goto invalid_code_posints; |
1018 | return make_number (c1); | |
1019 | } | |
1020 | else if (c1 < 0 || c1 > 0xFF || c2 < 0 || c2 > 0xFF) | |
1021 | goto invalid_code_posints; | |
ac4137cc KH |
1022 | c1 &= 0x7F; |
1023 | c2 &= 0x7F; | |
1024 | if (c1 == 0 | |
1025 | ? c2 != 0 | |
1026 | : (c2 == 0 | |
87f67317 KR |
1027 | ? !CHAR_COMPONENTS_VALID_P (charset_id, c1, 0x20) |
1028 | : !CHAR_COMPONENTS_VALID_P (charset_id, c1, c2))) | |
2e344af3 | 1029 | goto invalid_code_posints; |
ac4137cc | 1030 | return make_number (MAKE_CHAR (charset_id, c1, c2)); |
2e344af3 KH |
1031 | |
1032 | invalid_code_posints: | |
1033 | error ("Invalid code points for charset ID %d: %d %d", charset_id, c1, c2); | |
4ed46869 KH |
1034 | } |
1035 | ||
1036 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, | |
bc001814 JB |
1037 | doc: /* Return list of charset and one or two position-codes of CH. |
1038 | If CH is invalid as a character code, | |
1039 | return a list of symbol `unknown' and CH. */) | |
fdb82f93 | 1040 | (ch) |
4ed46869 KH |
1041 | Lisp_Object ch; |
1042 | { | |
0282eb69 | 1043 | int c, charset, c1, c2; |
4ed46869 | 1044 | |
b7826503 | 1045 | CHECK_NUMBER (ch); |
0282eb69 KH |
1046 | c = XFASTINT (ch); |
1047 | if (!CHAR_VALID_P (c, 1)) | |
1048 | return Fcons (Qunknown, Fcons (ch, Qnil)); | |
4ed46869 | 1049 | SPLIT_CHAR (XFASTINT (ch), charset, c1, c2); |
6dc0722d | 1050 | return (c2 >= 0 |
4ed46869 KH |
1051 | ? Fcons (CHARSET_SYMBOL (charset), |
1052 | Fcons (make_number (c1), Fcons (make_number (c2), Qnil))) | |
1053 | : Fcons (CHARSET_SYMBOL (charset), Fcons (make_number (c1), Qnil))); | |
1054 | } | |
1055 | ||
1056 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0, | |
bc001814 | 1057 | doc: /* Return charset of CH. */) |
fdb82f93 | 1058 | (ch) |
4ed46869 KH |
1059 | Lisp_Object ch; |
1060 | { | |
b7826503 | 1061 | CHECK_NUMBER (ch); |
4ed46869 KH |
1062 | |
1063 | return CHARSET_SYMBOL (CHAR_CHARSET (XINT (ch))); | |
1064 | } | |
1065 | ||
90d7b74e | 1066 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
fdb82f93 PJ |
1067 | doc: /* Return charset of a character in the current buffer at position POS. |
1068 | If POS is nil, it defauls to the current point. | |
1069 | If POS is out of range, the value is nil. */) | |
1070 | (pos) | |
90d7b74e KH |
1071 | Lisp_Object pos; |
1072 | { | |
2e344af3 KH |
1073 | Lisp_Object ch; |
1074 | int charset; | |
ac4137cc | 1075 | |
2e344af3 KH |
1076 | ch = Fchar_after (pos); |
1077 | if (! INTEGERP (ch)) | |
1078 | return ch; | |
1079 | charset = CHAR_CHARSET (XINT (ch)); | |
90d7b74e KH |
1080 | return CHARSET_SYMBOL (charset); |
1081 | } | |
1082 | ||
4ed46869 | 1083 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
fdb82f93 PJ |
1084 | doc: /* Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR. |
1085 | ||
1086 | ISO 2022's designation sequence (escape sequence) distinguishes charsets | |
1087 | by their DIMENSION, CHARS, and FINAL-CHAR, | |
1088 | where as Emacs distinguishes them by charset symbol. | |
1089 | See the documentation of the function `charset-info' for the meanings of | |
1090 | DIMENSION, CHARS, and FINAL-CHAR. */) | |
1091 | (dimension, chars, final_char) | |
4ed46869 KH |
1092 | Lisp_Object dimension, chars, final_char; |
1093 | { | |
1094 | int charset; | |
1095 | ||
b7826503 PJ |
1096 | CHECK_NUMBER (dimension); |
1097 | CHECK_NUMBER (chars); | |
1098 | CHECK_NUMBER (final_char); | |
4ed46869 KH |
1099 | |
1100 | if ((charset = ISO_CHARSET_TABLE (dimension, chars, final_char)) < 0) | |
1101 | return Qnil; | |
1102 | return CHARSET_SYMBOL (charset); | |
1103 | } | |
1104 | ||
e0f24100 GM |
1105 | /* If GENERICP is nonzero, return nonzero if C is a valid normal or |
1106 | generic character. If GENERICP is zero, return nonzero if C is a | |
9d3d8cba KH |
1107 | valid normal character. Do not call this function directly, |
1108 | instead use macro CHAR_VALID_P. */ | |
1109 | int | |
1110 | char_valid_p (c, genericp) | |
1111 | int c, genericp; | |
1112 | { | |
1113 | int charset, c1, c2; | |
1114 | ||
0e235b7e | 1115 | if (c < 0 || c >= MAX_CHAR) |
9d3d8cba KH |
1116 | return 0; |
1117 | if (SINGLE_BYTE_CHAR_P (c)) | |
1118 | return 1; | |
2e344af3 | 1119 | SPLIT_CHAR (c, charset, c1, c2); |
ac4137cc KH |
1120 | if (genericp) |
1121 | { | |
1122 | if (c1) | |
1123 | { | |
1124 | if (c2 <= 0) c2 = 0x20; | |
1125 | } | |
1126 | else | |
1127 | { | |
1128 | if (c2 <= 0) c1 = c2 = 0x20; | |
1129 | } | |
1130 | } | |
1131 | return (CHARSET_DEFINED_P (charset) | |
44c6492d | 1132 | && CHAR_COMPONENTS_VALID_P (charset, c1, c2)); |
9d3d8cba KH |
1133 | } |
1134 | ||
1135 | DEFUN ("char-valid-p", Fchar_valid_p, Schar_valid_p, 1, 2, 0, | |
fdb82f93 PJ |
1136 | doc: /* Return t if OBJECT is a valid normal character. |
1137 | If optional arg GENERICP is non-nil, also return t if OBJECT is | |
1138 | a valid generic character. */) | |
1139 | (object, genericp) | |
9d3d8cba KH |
1140 | Lisp_Object object, genericp; |
1141 | { | |
1142 | if (! NATNUMP (object)) | |
1143 | return Qnil; | |
1144 | return (CHAR_VALID_P (XFASTINT (object), !NILP (genericp)) ? Qt : Qnil); | |
1145 | } | |
1146 | ||
d2665018 KH |
1147 | DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte, |
1148 | Sunibyte_char_to_multibyte, 1, 1, 0, | |
fdb82f93 PJ |
1149 | doc: /* Convert the unibyte character CH to multibyte character. |
1150 | The conversion is done based on `nonascii-translation-table' (which see) | |
1151 | or `nonascii-insert-offset' (which see). */) | |
1152 | (ch) | |
d2665018 KH |
1153 | Lisp_Object ch; |
1154 | { | |
1155 | int c; | |
1156 | ||
b7826503 | 1157 | CHECK_NUMBER (ch); |
d2665018 KH |
1158 | c = XINT (ch); |
1159 | if (c < 0 || c >= 0400) | |
1160 | error ("Invalid unibyte character: %d", c); | |
1161 | c = unibyte_char_to_multibyte (c); | |
1162 | if (c < 0) | |
1163 | error ("Can't convert to multibyte character: %d", XINT (ch)); | |
1164 | return make_number (c); | |
1165 | } | |
1166 | ||
1bcc1567 RS |
1167 | DEFUN ("multibyte-char-to-unibyte", Fmultibyte_char_to_unibyte, |
1168 | Smultibyte_char_to_unibyte, 1, 1, 0, | |
fdb82f93 PJ |
1169 | doc: /* Convert the multibyte character CH to unibyte character. |
1170 | The conversion is done based on `nonascii-translation-table' (which see) | |
1171 | or `nonascii-insert-offset' (which see). */) | |
1172 | (ch) | |
1bcc1567 RS |
1173 | Lisp_Object ch; |
1174 | { | |
1175 | int c; | |
1176 | ||
b7826503 | 1177 | CHECK_NUMBER (ch); |
1bcc1567 | 1178 | c = XINT (ch); |
ac4137cc | 1179 | if (! CHAR_VALID_P (c, 0)) |
1bcc1567 RS |
1180 | error ("Invalid multibyte character: %d", c); |
1181 | c = multibyte_char_to_unibyte (c, Qnil); | |
1182 | if (c < 0) | |
1183 | error ("Can't convert to unibyte character: %d", XINT (ch)); | |
1184 | return make_number (c); | |
1185 | } | |
1186 | ||
4ed46869 | 1187 | DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0, |
bc001814 | 1188 | doc: /* Return 1 regardless of the argument CH. */) |
fdb82f93 | 1189 | (ch) |
4ed46869 KH |
1190 | Lisp_Object ch; |
1191 | { | |
b7826503 | 1192 | CHECK_NUMBER (ch); |
9b6a601f KH |
1193 | return make_number (1); |
1194 | } | |
1195 | ||
1196 | /* Return how many bytes C will occupy in a multibyte buffer. | |
1197 | Don't call this function directly, instead use macro CHAR_BYTES. */ | |
1198 | int | |
1199 | char_bytes (c) | |
1200 | int c; | |
1201 | { | |
99529c2c | 1202 | int charset; |
9b6a601f | 1203 | |
2e344af3 KH |
1204 | if (ASCII_BYTE_P (c) || (c & ~((1 << CHARACTERBITS) -1))) |
1205 | return 1; | |
1206 | if (SINGLE_BYTE_CHAR_P (c) && c >= 0xA0) | |
8ac5a9cc KH |
1207 | return 1; |
1208 | ||
99529c2c KH |
1209 | charset = CHAR_CHARSET (c); |
1210 | return (CHARSET_DEFINED_P (charset) ? CHARSET_BYTES (charset) : 1); | |
4ed46869 KH |
1211 | } |
1212 | ||
1213 | /* Return the width of character of which multi-byte form starts with | |
1214 | C. The width is measured by how many columns occupied on the | |
1215 | screen when displayed in the current buffer. */ | |
1216 | ||
1217 | #define ONE_BYTE_CHAR_WIDTH(c) \ | |
1218 | (c < 0x20 \ | |
1219 | ? (c == '\t' \ | |
53316e55 | 1220 | ? XFASTINT (current_buffer->tab_width) \ |
4ed46869 KH |
1221 | : (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2))) \ |
1222 | : (c < 0x7f \ | |
1223 | ? 1 \ | |
1224 | : (c == 0x7F \ | |
1225 | ? (NILP (current_buffer->ctl_arrow) ? 4 : 2) \ | |
1226 | : ((! NILP (current_buffer->enable_multibyte_characters) \ | |
1227 | && BASE_LEADING_CODE_P (c)) \ | |
1228 | ? WIDTH_BY_CHAR_HEAD (c) \ | |
b4e9dd77 | 1229 | : 4)))) |
4ed46869 KH |
1230 | |
1231 | DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0, | |
bc001814 | 1232 | doc: /* Return width of CH when displayed in the current buffer. |
fdb82f93 PJ |
1233 | The width is measured by how many columns it occupies on the screen. |
1234 | Tab is taken to occupy `tab-width' columns. */) | |
1235 | (ch) | |
1236 | Lisp_Object ch; | |
4ed46869 | 1237 | { |
859f2b3c | 1238 | Lisp_Object val, disp; |
4ed46869 | 1239 | int c; |
51c4025f | 1240 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 | 1241 | |
b7826503 | 1242 | CHECK_NUMBER (ch); |
4ed46869 | 1243 | |
859f2b3c RS |
1244 | c = XINT (ch); |
1245 | ||
1246 | /* Get the way the display table would display it. */ | |
51c4025f | 1247 | disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil; |
859f2b3c RS |
1248 | |
1249 | if (VECTORP (disp)) | |
1250 | XSETINT (val, XVECTOR (disp)->size); | |
1251 | else if (SINGLE_BYTE_CHAR_P (c)) | |
1252 | XSETINT (val, ONE_BYTE_CHAR_WIDTH (c)); | |
4ed46869 KH |
1253 | else |
1254 | { | |
1255 | int charset = CHAR_CHARSET (c); | |
1256 | ||
1257 | XSETFASTINT (val, CHARSET_WIDTH (charset)); | |
1258 | } | |
1259 | return val; | |
1260 | } | |
1261 | ||
1262 | /* Return width of string STR of length LEN when displayed in the | |
1263 | current buffer. The width is measured by how many columns it | |
1264 | occupies on the screen. */ | |
859f2b3c | 1265 | |
4ed46869 KH |
1266 | int |
1267 | strwidth (str, len) | |
1268 | unsigned char *str; | |
1269 | int len; | |
1270 | { | |
beeedaad KH |
1271 | return c_string_width (str, len, -1, NULL, NULL); |
1272 | } | |
1273 | ||
1274 | /* Return width of string STR of length LEN when displayed in the | |
1275 | current buffer. The width is measured by how many columns it | |
1276 | occupies on the screen. If PRECISION > 0, return the width of | |
1277 | longest substring that doesn't exceed PRECISION, and set number of | |
1278 | characters and bytes of the substring in *NCHARS and *NBYTES | |
1279 | respectively. */ | |
1280 | ||
1281 | int | |
1282 | c_string_width (str, len, precision, nchars, nbytes) | |
fb4f7f50 | 1283 | const unsigned char *str; |
020ea113 | 1284 | int len, precision, *nchars, *nbytes; |
beeedaad KH |
1285 | { |
1286 | int i = 0, i_byte = 0; | |
4ed46869 | 1287 | int width = 0; |
beeedaad | 1288 | int chars; |
c4a4e28f | 1289 | struct Lisp_Char_Table *dp = buffer_display_table (); |
4ed46869 | 1290 | |
beeedaad | 1291 | while (i_byte < len) |
859f2b3c | 1292 | { |
beeedaad KH |
1293 | int bytes, thiswidth; |
1294 | Lisp_Object val; | |
859f2b3c | 1295 | |
99529c2c | 1296 | if (dp) |
beeedaad KH |
1297 | { |
1298 | int c = STRING_CHAR_AND_LENGTH (str + i_byte, len - i_byte, bytes); | |
1299 | ||
1300 | chars = 1; | |
1301 | val = DISP_CHAR_VECTOR (dp, c); | |
1302 | if (VECTORP (val)) | |
1303 | thiswidth = XVECTOR (val)->size; | |
1304 | else | |
1305 | thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]); | |
1306 | } | |
859f2b3c | 1307 | else |
beeedaad KH |
1308 | { |
1309 | chars = 1; | |
1310 | PARSE_MULTIBYTE_SEQ (str + i_byte, len - i_byte, bytes); | |
1311 | thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]); | |
1312 | } | |
99529c2c | 1313 | |
beeedaad KH |
1314 | if (precision > 0 |
1315 | && (width + thiswidth > precision)) | |
1316 | { | |
1317 | *nchars = i; | |
1318 | *nbytes = i_byte; | |
1319 | return width; | |
1320 | } | |
1321 | i++; | |
1322 | i_byte += bytes; | |
1323 | width += thiswidth; | |
1324 | } | |
99529c2c | 1325 | |
beeedaad KH |
1326 | if (precision > 0) |
1327 | { | |
1328 | *nchars = i; | |
1329 | *nbytes = i_byte; | |
859f2b3c | 1330 | } |
beeedaad | 1331 | |
4ed46869 KH |
1332 | return width; |
1333 | } | |
1334 | ||
beeedaad KH |
1335 | /* Return width of Lisp string STRING when displayed in the current |
1336 | buffer. The width is measured by how many columns it occupies on | |
1337 | the screen while paying attention to compositions. If PRECISION > | |
1338 | 0, return the width of longest substring that doesn't exceed | |
1339 | PRECISION, and set number of characters and bytes of the substring | |
1340 | in *NCHARS and *NBYTES respectively. */ | |
1341 | ||
3f62427c | 1342 | int |
beeedaad KH |
1343 | lisp_string_width (string, precision, nchars, nbytes) |
1344 | Lisp_Object string; | |
1345 | int precision, *nchars, *nbytes; | |
3f62427c | 1346 | { |
d5db4077 KR |
1347 | int len = SCHARS (string); |
1348 | int len_byte = SBYTES (string); | |
212cc638 KH |
1349 | /* This set multibyte to 0 even if STRING is multibyte when it |
1350 | contains only ascii and eight-bit-graphic, but that's | |
1351 | intentional. */ | |
1352 | int multibyte = len < len_byte; | |
fb4f7f50 | 1353 | const unsigned char *str = SDATA (string); |
beeedaad | 1354 | int i = 0, i_byte = 0; |
3f62427c | 1355 | int width = 0; |
beeedaad | 1356 | struct Lisp_Char_Table *dp = buffer_display_table (); |
3f62427c KH |
1357 | |
1358 | while (i < len) | |
1359 | { | |
beeedaad KH |
1360 | int chars, bytes, thiswidth; |
1361 | Lisp_Object val; | |
1362 | int cmp_id; | |
1363 | int ignore, end; | |
1364 | ||
1365 | if (find_composition (i, -1, &ignore, &end, &val, string) | |
1366 | && ((cmp_id = get_composition_id (i, i_byte, end - i, val, string)) | |
1367 | >= 0)) | |
3f62427c | 1368 | { |
beeedaad KH |
1369 | thiswidth = composition_table[cmp_id]->width; |
1370 | chars = end - i; | |
1371 | bytes = string_char_to_byte (string, end) - i_byte; | |
1372 | } | |
1373 | else if (dp) | |
1374 | { | |
212cc638 | 1375 | int c; |
beeedaad | 1376 | |
212cc638 KH |
1377 | if (multibyte) |
1378 | c = STRING_CHAR_AND_LENGTH (str + i_byte, len - i_byte, bytes); | |
1379 | else | |
1380 | c = str[i_byte], bytes = 1; | |
beeedaad KH |
1381 | chars = 1; |
1382 | val = DISP_CHAR_VECTOR (dp, c); | |
1383 | if (VECTORP (val)) | |
1384 | thiswidth = XVECTOR (val)->size; | |
1385 | else | |
1386 | thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]); | |
3f62427c KH |
1387 | } |
1388 | else | |
1389 | { | |
beeedaad | 1390 | chars = 1; |
212cc638 KH |
1391 | if (multibyte) |
1392 | PARSE_MULTIBYTE_SEQ (str + i_byte, len_byte - i_byte, bytes); | |
1393 | else | |
1394 | bytes = 1; | |
beeedaad KH |
1395 | thiswidth = ONE_BYTE_CHAR_WIDTH (str[i_byte]); |
1396 | } | |
1397 | ||
1398 | if (precision > 0 | |
1399 | && (width + thiswidth > precision)) | |
1400 | { | |
1401 | *nchars = i; | |
1402 | *nbytes = i_byte; | |
1403 | return width; | |
3f62427c | 1404 | } |
beeedaad KH |
1405 | i += chars; |
1406 | i_byte += bytes; | |
1407 | width += thiswidth; | |
1408 | } | |
1409 | ||
1410 | if (precision > 0) | |
1411 | { | |
1412 | *nchars = i; | |
1413 | *nbytes = i_byte; | |
3f62427c | 1414 | } |
beeedaad | 1415 | |
3f62427c KH |
1416 | return width; |
1417 | } | |
1418 | ||
4ed46869 | 1419 | DEFUN ("string-width", Fstring_width, Sstring_width, 1, 1, 0, |
fdb82f93 PJ |
1420 | doc: /* Return width of STRING when displayed in the current buffer. |
1421 | Width is measured by how many columns it occupies on the screen. | |
1422 | When calculating width of a multibyte character in STRING, | |
1423 | only the base leading-code is considered; the validity of | |
1424 | the following bytes is not checked. Tabs in STRING are always | |
1425 | taken to occupy `tab-width' columns. */) | |
bc001814 JB |
1426 | (string) |
1427 | Lisp_Object string; | |
4ed46869 KH |
1428 | { |
1429 | Lisp_Object val; | |
1430 | ||
bc001814 JB |
1431 | CHECK_STRING (string); |
1432 | XSETFASTINT (val, lisp_string_width (string, -1, NULL, NULL)); | |
4ed46869 KH |
1433 | return val; |
1434 | } | |
1435 | ||
1436 | DEFUN ("char-direction", Fchar_direction, Schar_direction, 1, 1, 0, | |
bc001814 | 1437 | doc: /* Return the direction of CH. |
fdb82f93 PJ |
1438 | The returned value is 0 for left-to-right and 1 for right-to-left. */) |
1439 | (ch) | |
4ed46869 KH |
1440 | Lisp_Object ch; |
1441 | { | |
1442 | int charset; | |
1443 | ||
b7826503 | 1444 | CHECK_NUMBER (ch); |
4ed46869 KH |
1445 | charset = CHAR_CHARSET (XFASTINT (ch)); |
1446 | if (!CHARSET_DEFINED_P (charset)) | |
93bcb785 | 1447 | invalid_character (XINT (ch)); |
4ed46869 KH |
1448 | return CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX); |
1449 | } | |
1450 | ||
87b089ad RS |
1451 | /* Return the number of characters in the NBYTES bytes at PTR. |
1452 | This works by looking at the contents and checking for multibyte sequences. | |
1453 | However, if the current buffer has enable-multibyte-characters = nil, | |
1454 | we treat each byte as a character. */ | |
1455 | ||
6ae1f27e RS |
1456 | int |
1457 | chars_in_text (ptr, nbytes) | |
fb4f7f50 | 1458 | const unsigned char *ptr; |
6ae1f27e RS |
1459 | int nbytes; |
1460 | { | |
87b089ad RS |
1461 | /* current_buffer is null at early stages of Emacs initialization. */ |
1462 | if (current_buffer == 0 | |
1463 | || NILP (current_buffer->enable_multibyte_characters)) | |
6ae1f27e | 1464 | return nbytes; |
a8a35e61 | 1465 | |
ac4137cc | 1466 | return multibyte_chars_in_text (ptr, nbytes); |
046b1f03 RS |
1467 | } |
1468 | ||
87b089ad RS |
1469 | /* Return the number of characters in the NBYTES bytes at PTR. |
1470 | This works by looking at the contents and checking for multibyte sequences. | |
1471 | It ignores enable-multibyte-characters. */ | |
1472 | ||
1473 | int | |
1474 | multibyte_chars_in_text (ptr, nbytes) | |
fb4f7f50 | 1475 | const unsigned char *ptr; |
87b089ad RS |
1476 | int nbytes; |
1477 | { | |
fb4f7f50 | 1478 | const unsigned char *endp; |
ac4137cc | 1479 | int chars, bytes; |
87b089ad RS |
1480 | |
1481 | endp = ptr + nbytes; | |
1482 | chars = 0; | |
1483 | ||
1484 | while (ptr < endp) | |
1485 | { | |
2e344af3 KH |
1486 | PARSE_MULTIBYTE_SEQ (ptr, endp - ptr, bytes); |
1487 | ptr += bytes; | |
1488 | chars++; | |
1489 | } | |
1490 | ||
1491 | return chars; | |
1492 | } | |
1493 | ||
d8e4f486 | 1494 | /* Parse unibyte text at STR of LEN bytes as multibyte text, and |
2e344af3 | 1495 | count the numbers of characters and bytes in it. On counting |
d8e4f486 DL |
1496 | bytes, pay attention to the fact that 8-bit characters in the range |
1497 | 0x80..0x9F are represented by 2 bytes in multibyte text. */ | |
2e344af3 KH |
1498 | void |
1499 | parse_str_as_multibyte (str, len, nchars, nbytes) | |
fb4f7f50 | 1500 | const unsigned char *str; |
2e344af3 KH |
1501 | int len, *nchars, *nbytes; |
1502 | { | |
fb4f7f50 | 1503 | const unsigned char *endp = str + len; |
2e344af3 KH |
1504 | int n, chars = 0, bytes = 0; |
1505 | ||
1506 | while (str < endp) | |
1507 | { | |
1508 | if (UNIBYTE_STR_AS_MULTIBYTE_P (str, endp - str, n)) | |
1509 | str += n, bytes += n; | |
1510 | else | |
1511 | str++, bytes += 2; | |
1512 | chars++; | |
1513 | } | |
1514 | *nchars = chars; | |
1515 | *nbytes = bytes; | |
1516 | return; | |
1517 | } | |
1518 | ||
d8e4f486 | 1519 | /* Arrange unibyte text at STR of NBYTES bytes as multibyte text. |
2e344af3 KH |
1520 | It actually converts only 8-bit characters in the range 0x80..0x9F |
1521 | that don't contruct multibyte characters to multibyte forms. If | |
1522 | NCHARS is nonzero, set *NCHARS to the number of characters in the | |
1523 | text. It is assured that we can use LEN bytes at STR as a work | |
1524 | area and that is enough. Return the number of bytes of the | |
1525 | resulting text. */ | |
1526 | ||
1527 | int | |
1528 | str_as_multibyte (str, len, nbytes, nchars) | |
1529 | unsigned char *str; | |
1530 | int len, nbytes, *nchars; | |
1531 | { | |
1532 | unsigned char *p = str, *endp = str + nbytes; | |
1533 | unsigned char *to; | |
1534 | int chars = 0; | |
1535 | int n; | |
1536 | ||
1537 | while (p < endp && UNIBYTE_STR_AS_MULTIBYTE_P (p, endp - p, n)) | |
1538 | p += n, chars++; | |
1539 | if (nchars) | |
1540 | *nchars = chars; | |
1541 | if (p == endp) | |
1542 | return nbytes; | |
1543 | ||
1544 | to = p; | |
1545 | nbytes = endp - p; | |
1546 | endp = str + len; | |
1547 | safe_bcopy (p, endp - nbytes, nbytes); | |
1548 | p = endp - nbytes; | |
1549 | while (p < endp) | |
1550 | { | |
1551 | if (UNIBYTE_STR_AS_MULTIBYTE_P (p, endp - p, n)) | |
ac4137cc | 1552 | { |
2e344af3 KH |
1553 | while (n--) |
1554 | *to++ = *p++; | |
177c0ea7 | 1555 | } |
ac4137cc KH |
1556 | else |
1557 | { | |
2e344af3 KH |
1558 | *to++ = LEADING_CODE_8_BIT_CONTROL; |
1559 | *to++ = *p++ + 0x20; | |
ac4137cc | 1560 | } |
87b089ad RS |
1561 | chars++; |
1562 | } | |
2e344af3 KH |
1563 | if (nchars) |
1564 | *nchars = chars; | |
1565 | return (to - str); | |
1566 | } | |
87b089ad | 1567 | |
740f080d KH |
1568 | /* Parse unibyte string at STR of LEN bytes, and return the number of |
1569 | bytes it may ocupy when converted to multibyte string by | |
1570 | `str_to_multibyte'. */ | |
1571 | ||
1572 | int | |
1573 | parse_str_to_multibyte (str, len) | |
1574 | unsigned char *str; | |
1575 | int len; | |
1576 | { | |
1577 | unsigned char *endp = str + len; | |
1578 | int bytes; | |
1579 | ||
1580 | for (bytes = 0; str < endp; str++) | |
1581 | bytes += (*str < 0x80 || *str >= 0xA0) ? 1 : 2; | |
1582 | return bytes; | |
1583 | } | |
1584 | ||
d8e4f486 | 1585 | /* Convert unibyte text at STR of NBYTES bytes to multibyte text |
2e344af3 KH |
1586 | that contains the same single-byte characters. It actually |
1587 | converts all 8-bit characters to multibyte forms. It is assured | |
1588 | that we can use LEN bytes at STR as a work area and that is | |
1589 | enough. */ | |
1590 | ||
1591 | int | |
1592 | str_to_multibyte (str, len, bytes) | |
1593 | unsigned char *str; | |
1594 | int len, bytes; | |
1595 | { | |
1596 | unsigned char *p = str, *endp = str + bytes; | |
1597 | unsigned char *to; | |
2e344af3 KH |
1598 | |
1599 | while (p < endp && (*p < 0x80 || *p >= 0xA0)) p++; | |
1600 | if (p == endp) | |
1601 | return bytes; | |
1602 | to = p; | |
1603 | bytes = endp - p; | |
1604 | endp = str + len; | |
1605 | safe_bcopy (p, endp - bytes, bytes); | |
1606 | p = endp - bytes; | |
177c0ea7 | 1607 | while (p < endp) |
2e344af3 KH |
1608 | { |
1609 | if (*p < 0x80 || *p >= 0xA0) | |
1610 | *to++ = *p++; | |
1611 | else | |
1612 | *to++ = LEADING_CODE_8_BIT_CONTROL, *to++ = *p++ + 0x20; | |
1613 | } | |
1614 | return (to - str); | |
87b089ad RS |
1615 | } |
1616 | ||
2e344af3 KH |
1617 | /* Arrange multibyte text at STR of LEN bytes as a unibyte text. It |
1618 | actually converts only 8-bit characters in the range 0x80..0x9F to | |
1619 | unibyte forms. */ | |
1620 | ||
1621 | int | |
1622 | str_as_unibyte (str, bytes) | |
1623 | unsigned char *str; | |
1624 | int bytes; | |
1625 | { | |
1626 | unsigned char *p = str, *endp = str + bytes; | |
1627 | unsigned char *to = str; | |
1628 | ||
1629 | while (p < endp && *p != LEADING_CODE_8_BIT_CONTROL) p++; | |
1630 | to = p; | |
177c0ea7 | 1631 | while (p < endp) |
2e344af3 KH |
1632 | { |
1633 | if (*p == LEADING_CODE_8_BIT_CONTROL) | |
1634 | *to++ = *(p + 1) - 0x20, p += 2; | |
1635 | else | |
1636 | *to++ = *p++; | |
1637 | } | |
1638 | return (to - str); | |
1639 | } | |
1640 | ||
1641 | \f | |
4bc26a6c | 1642 | DEFUN ("string", Fstring, Sstring, 0, MANY, 0, |
5f5d497e MB |
1643 | doc: /* Concatenate all the argument characters and make the result a string. |
1644 | usage: (string &rest CHARACTERS) */) | |
fdb82f93 | 1645 | (n, args) |
53316e55 | 1646 | int n; |
4ed46869 KH |
1647 | Lisp_Object *args; |
1648 | { | |
4894eddd KS |
1649 | int i, bufsize; |
1650 | unsigned char *buf, *p; | |
2e344af3 | 1651 | int c; |
5729c92f | 1652 | int multibyte = 0; |
4894eddd KS |
1653 | Lisp_Object ret; |
1654 | USE_SAFE_ALLOCA; | |
1655 | ||
1656 | bufsize = MAX_MULTIBYTE_LENGTH * n; | |
1657 | SAFE_ALLOCA (buf, unsigned char *, bufsize); | |
1658 | p = buf; | |
4ed46869 KH |
1659 | |
1660 | for (i = 0; i < n; i++) | |
1661 | { | |
b7826503 | 1662 | CHECK_NUMBER (args[i]); |
5729c92f KH |
1663 | if (!multibyte && !SINGLE_BYTE_CHAR_P (XFASTINT (args[i]))) |
1664 | multibyte = 1; | |
1665 | } | |
1666 | ||
1667 | for (i = 0; i < n; i++) | |
1668 | { | |
4ed46869 | 1669 | c = XINT (args[i]); |
5729c92f KH |
1670 | if (multibyte) |
1671 | p += CHAR_STRING (c, p); | |
1672 | else | |
555e35d2 | 1673 | *p++ = c; |
4ed46869 KH |
1674 | } |
1675 | ||
4894eddd | 1676 | ret = make_string_from_bytes (buf, n, p - buf); |
233f3db6 | 1677 | SAFE_FREE (); |
4894eddd KS |
1678 | |
1679 | return ret; | |
4ed46869 KH |
1680 | } |
1681 | ||
1682 | #endif /* emacs */ | |
1683 | \f | |
dfcf069d | 1684 | int |
4ed46869 KH |
1685 | charset_id_internal (charset_name) |
1686 | char *charset_name; | |
1687 | { | |
76d7b829 | 1688 | Lisp_Object val; |
4ed46869 | 1689 | |
76d7b829 | 1690 | val= Fget (intern (charset_name), Qcharset); |
4ed46869 KH |
1691 | if (!VECTORP (val)) |
1692 | error ("Charset %s is not defined", charset_name); | |
1693 | ||
1694 | return (XINT (XVECTOR (val)->contents[0])); | |
1695 | } | |
1696 | ||
1697 | DEFUN ("setup-special-charsets", Fsetup_special_charsets, | |
fdb82f93 PJ |
1698 | Ssetup_special_charsets, 0, 0, 0, doc: /* Internal use only. */) |
1699 | () | |
4ed46869 KH |
1700 | { |
1701 | charset_latin_iso8859_1 = charset_id_internal ("latin-iso8859-1"); | |
1702 | charset_jisx0208_1978 = charset_id_internal ("japanese-jisx0208-1978"); | |
1703 | charset_jisx0208 = charset_id_internal ("japanese-jisx0208"); | |
1704 | charset_katakana_jisx0201 = charset_id_internal ("katakana-jisx0201"); | |
1705 | charset_latin_jisx0201 = charset_id_internal ("latin-jisx0201"); | |
1706 | charset_big5_1 = charset_id_internal ("chinese-big5-1"); | |
1707 | charset_big5_2 = charset_id_internal ("chinese-big5-2"); | |
c64582be KH |
1708 | charset_mule_unicode_0100_24ff |
1709 | = charset_id_internal ("mule-unicode-0100-24ff"); | |
1710 | charset_mule_unicode_2500_33ff | |
1711 | = charset_id_internal ("mule-unicode-2500-33ff"); | |
1712 | charset_mule_unicode_e000_ffff | |
1713 | = charset_id_internal ("mule-unicode-e000-ffff"); | |
4ed46869 KH |
1714 | return Qnil; |
1715 | } | |
1716 | ||
dfcf069d | 1717 | void |
4ed46869 KH |
1718 | init_charset_once () |
1719 | { | |
1720 | int i, j, k; | |
1721 | ||
1722 | staticpro (&Vcharset_table); | |
1723 | staticpro (&Vcharset_symbol_table); | |
8a73a704 | 1724 | staticpro (&Vgeneric_character_list); |
4ed46869 KH |
1725 | |
1726 | /* This has to be done here, before we call Fmake_char_table. */ | |
1727 | Qcharset_table = intern ("charset-table"); | |
1728 | staticpro (&Qcharset_table); | |
1729 | ||
1730 | /* Intern this now in case it isn't already done. | |
1731 | Setting this variable twice is harmless. | |
1732 | But don't staticpro it here--that is done in alloc.c. */ | |
1733 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); | |
1734 | ||
1735 | /* Now we are ready to set up this property, so we can | |
1736 | create the charset table. */ | |
1737 | Fput (Qcharset_table, Qchar_table_extra_slots, make_number (0)); | |
1738 | Vcharset_table = Fmake_char_table (Qcharset_table, Qnil); | |
1739 | ||
0282eb69 KH |
1740 | Qunknown = intern ("unknown"); |
1741 | staticpro (&Qunknown); | |
1742 | Vcharset_symbol_table = Fmake_vector (make_number (MAX_CHARSET + 1), | |
1743 | Qunknown); | |
4ed46869 KH |
1744 | |
1745 | /* Setup tables. */ | |
1746 | for (i = 0; i < 2; i++) | |
1747 | for (j = 0; j < 2; j++) | |
1748 | for (k = 0; k < 128; k++) | |
1749 | iso_charset_table [i][j][k] = -1; | |
1750 | ||
60383934 | 1751 | for (i = 0; i < 256; i++) |
2e344af3 | 1752 | bytes_by_char_head[i] = 1; |
2e344af3 KH |
1753 | bytes_by_char_head[LEADING_CODE_PRIVATE_11] = 3; |
1754 | bytes_by_char_head[LEADING_CODE_PRIVATE_12] = 3; | |
1755 | bytes_by_char_head[LEADING_CODE_PRIVATE_21] = 4; | |
1756 | bytes_by_char_head[LEADING_CODE_PRIVATE_22] = 4; | |
4ed46869 KH |
1757 | |
1758 | for (i = 0; i < 128; i++) | |
2e344af3 | 1759 | width_by_char_head[i] = 1; |
4ed46869 | 1760 | for (; i < 256; i++) |
2e344af3 KH |
1761 | width_by_char_head[i] = 4; |
1762 | width_by_char_head[LEADING_CODE_PRIVATE_11] = 1; | |
1763 | width_by_char_head[LEADING_CODE_PRIVATE_12] = 2; | |
1764 | width_by_char_head[LEADING_CODE_PRIVATE_21] = 1; | |
1765 | width_by_char_head[LEADING_CODE_PRIVATE_22] = 2; | |
8a73a704 KH |
1766 | |
1767 | { | |
76d7b829 | 1768 | Lisp_Object val; |
8a73a704 | 1769 | |
76d7b829 | 1770 | val = Qnil; |
8a73a704 KH |
1771 | for (i = 0x81; i < 0x90; i++) |
1772 | val = Fcons (make_number ((i - 0x70) << 7), val); | |
1773 | for (; i < 0x9A; i++) | |
1774 | val = Fcons (make_number ((i - 0x8F) << 14), val); | |
1775 | for (i = 0xA0; i < 0xF0; i++) | |
1776 | val = Fcons (make_number ((i - 0x70) << 7), val); | |
1777 | for (; i < 0xFF; i++) | |
1778 | val = Fcons (make_number ((i - 0xE0) << 14), val); | |
8a73a704 KH |
1779 | Vgeneric_character_list = Fnreverse (val); |
1780 | } | |
bbf12bb3 KH |
1781 | |
1782 | nonascii_insert_offset = 0; | |
1783 | Vnonascii_translation_table = Qnil; | |
4ed46869 KH |
1784 | } |
1785 | ||
1786 | #ifdef emacs | |
1787 | ||
dfcf069d | 1788 | void |
4ed46869 KH |
1789 | syms_of_charset () |
1790 | { | |
2e344af3 KH |
1791 | Qcharset = intern ("charset"); |
1792 | staticpro (&Qcharset); | |
1793 | ||
4ed46869 KH |
1794 | Qascii = intern ("ascii"); |
1795 | staticpro (&Qascii); | |
1796 | ||
2e344af3 KH |
1797 | Qeight_bit_control = intern ("eight-bit-control"); |
1798 | staticpro (&Qeight_bit_control); | |
1799 | ||
1800 | Qeight_bit_graphic = intern ("eight-bit-graphic"); | |
1801 | staticpro (&Qeight_bit_graphic); | |
4ed46869 | 1802 | |
2e344af3 KH |
1803 | /* Define special charsets ascii, eight-bit-control, and |
1804 | eight-bit-graphic. */ | |
4ed46869 KH |
1805 | update_charset_table (make_number (CHARSET_ASCII), |
1806 | make_number (1), make_number (94), | |
1807 | make_number (1), | |
1808 | make_number (0), | |
1809 | make_number ('B'), | |
1810 | make_number (0), | |
1811 | build_string ("ASCII"), | |
d78bc582 | 1812 | Qnil, /* same as above */ |
4ed46869 KH |
1813 | build_string ("ASCII (ISO646 IRV)")); |
1814 | CHARSET_SYMBOL (CHARSET_ASCII) = Qascii; | |
1815 | Fput (Qascii, Qcharset, CHARSET_TABLE_ENTRY (CHARSET_ASCII)); | |
1816 | ||
2e344af3 KH |
1817 | update_charset_table (make_number (CHARSET_8_BIT_CONTROL), |
1818 | make_number (1), make_number (96), | |
797a084a | 1819 | make_number (4), |
2e344af3 KH |
1820 | make_number (0), |
1821 | make_number (-1), | |
1822 | make_number (-1), | |
1823 | build_string ("8-bit control code (0x80..0x9F)"), | |
d78bc582 KH |
1824 | Qnil, /* same as above */ |
1825 | Qnil); /* same as above */ | |
2e344af3 KH |
1826 | CHARSET_SYMBOL (CHARSET_8_BIT_CONTROL) = Qeight_bit_control; |
1827 | Fput (Qeight_bit_control, Qcharset, | |
1828 | CHARSET_TABLE_ENTRY (CHARSET_8_BIT_CONTROL)); | |
1829 | ||
1830 | update_charset_table (make_number (CHARSET_8_BIT_GRAPHIC), | |
1831 | make_number (1), make_number (96), | |
797a084a | 1832 | make_number (4), |
2e344af3 KH |
1833 | make_number (0), |
1834 | make_number (-1), | |
1835 | make_number (-1), | |
2e344af3 | 1836 | build_string ("8-bit graphic char (0xA0..0xFF)"), |
d78bc582 KH |
1837 | Qnil, /* same as above */ |
1838 | Qnil); /* same as above */ | |
2e344af3 KH |
1839 | CHARSET_SYMBOL (CHARSET_8_BIT_GRAPHIC) = Qeight_bit_graphic; |
1840 | Fput (Qeight_bit_graphic, Qcharset, | |
1841 | CHARSET_TABLE_ENTRY (CHARSET_8_BIT_GRAPHIC)); | |
1842 | ||
c1a08b4c KH |
1843 | Qauto_fill_chars = intern ("auto-fill-chars"); |
1844 | staticpro (&Qauto_fill_chars); | |
1845 | Fput (Qauto_fill_chars, Qchar_table_extra_slots, make_number (0)); | |
1846 | ||
4ed46869 | 1847 | defsubr (&Sdefine_charset); |
8a73a704 | 1848 | defsubr (&Sgeneric_character_list); |
3fac5a51 | 1849 | defsubr (&Sget_unused_iso_final_char); |
4ed46869 KH |
1850 | defsubr (&Sdeclare_equiv_charset); |
1851 | defsubr (&Sfind_charset_region); | |
1852 | defsubr (&Sfind_charset_string); | |
1853 | defsubr (&Smake_char_internal); | |
1854 | defsubr (&Ssplit_char); | |
1855 | defsubr (&Schar_charset); | |
90d7b74e | 1856 | defsubr (&Scharset_after); |
4ed46869 | 1857 | defsubr (&Siso_charset); |
9d3d8cba | 1858 | defsubr (&Schar_valid_p); |
d2665018 | 1859 | defsubr (&Sunibyte_char_to_multibyte); |
1bcc1567 | 1860 | defsubr (&Smultibyte_char_to_unibyte); |
4ed46869 KH |
1861 | defsubr (&Schar_bytes); |
1862 | defsubr (&Schar_width); | |
1863 | defsubr (&Sstring_width); | |
1864 | defsubr (&Schar_direction); | |
87b089ad | 1865 | defsubr (&Sstring); |
4ed46869 KH |
1866 | defsubr (&Ssetup_special_charsets); |
1867 | ||
1868 | DEFVAR_LISP ("charset-list", &Vcharset_list, | |
fdb82f93 | 1869 | doc: /* List of charsets ever defined. */); |
2e344af3 KH |
1870 | Vcharset_list = Fcons (Qascii, Fcons (Qeight_bit_control, |
1871 | Fcons (Qeight_bit_graphic, Qnil))); | |
4ed46869 | 1872 | |
537efd8d | 1873 | DEFVAR_LISP ("translation-table-vector", &Vtranslation_table_vector, |
fdb82f93 PJ |
1874 | doc: /* Vector of cons cell of a symbol and translation table ever defined. |
1875 | An ID of a translation table is an index of this vector. */); | |
537efd8d | 1876 | Vtranslation_table_vector = Fmake_vector (make_number (16), Qnil); |
b0e3cf2b | 1877 | |
4ed46869 | 1878 | DEFVAR_INT ("leading-code-private-11", &leading_code_private_11, |
fdb82f93 | 1879 | doc: /* Leading-code of private TYPE9N charset of column-width 1. */); |
4ed46869 KH |
1880 | leading_code_private_11 = LEADING_CODE_PRIVATE_11; |
1881 | ||
1882 | DEFVAR_INT ("leading-code-private-12", &leading_code_private_12, | |
fdb82f93 | 1883 | doc: /* Leading-code of private TYPE9N charset of column-width 2. */); |
4ed46869 KH |
1884 | leading_code_private_12 = LEADING_CODE_PRIVATE_12; |
1885 | ||
1886 | DEFVAR_INT ("leading-code-private-21", &leading_code_private_21, | |
fdb82f93 | 1887 | doc: /* Leading-code of private TYPE9Nx9N charset of column-width 1. */); |
4ed46869 KH |
1888 | leading_code_private_21 = LEADING_CODE_PRIVATE_21; |
1889 | ||
1890 | DEFVAR_INT ("leading-code-private-22", &leading_code_private_22, | |
fdb82f93 | 1891 | doc: /* Leading-code of private TYPE9Nx9N charset of column-width 2. */); |
4ed46869 | 1892 | leading_code_private_22 = LEADING_CODE_PRIVATE_22; |
35e623fb RS |
1893 | |
1894 | DEFVAR_INT ("nonascii-insert-offset", &nonascii_insert_offset, | |
fdb82f93 PJ |
1895 | doc: /* Offset for converting non-ASCII unibyte codes 0240...0377 to multibyte. |
1896 | This is used for converting unibyte text to multibyte, | |
1897 | and for inserting character codes specified by number. | |
1898 | ||
1899 | This serves to convert a Latin-1 or similar 8-bit character code | |
1900 | to the corresponding Emacs multibyte character code. | |
1901 | Typically the value should be (- (make-char CHARSET 0) 128), | |
1902 | for your choice of character set. | |
1903 | If `nonascii-translation-table' is non-nil, it overrides this variable. */); | |
35e623fb | 1904 | nonascii_insert_offset = 0; |
b0e3cf2b | 1905 | |
b4e9dd77 | 1906 | DEFVAR_LISP ("nonascii-translation-table", &Vnonascii_translation_table, |
fdb82f93 PJ |
1907 | doc: /* Translation table to convert non-ASCII unibyte codes to multibyte. |
1908 | This is used for converting unibyte text to multibyte, | |
1909 | and for inserting character codes specified by number. | |
1910 | ||
1911 | Conversion is performed only when multibyte characters are enabled, | |
1912 | and it serves to convert a Latin-1 or similar 8-bit character code | |
1913 | to the corresponding Emacs character code. | |
1914 | ||
1915 | If this is nil, `nonascii-insert-offset' is used instead. | |
1916 | See also the docstring of `make-translation-table'. */); | |
b4e9dd77 | 1917 | Vnonascii_translation_table = Qnil; |
4cf9710d | 1918 | |
c1a08b4c | 1919 | DEFVAR_LISP ("auto-fill-chars", &Vauto_fill_chars, |
fdb82f93 PJ |
1920 | doc: /* A char-table for characters which invoke auto-filling. |
1921 | Such characters have value t in this table. */); | |
c1a08b4c | 1922 | Vauto_fill_chars = Fmake_char_table (Qauto_fill_chars, Qnil); |
60022cb7 AS |
1923 | CHAR_TABLE_SET (Vauto_fill_chars, make_number (' '), Qt); |
1924 | CHAR_TABLE_SET (Vauto_fill_chars, make_number ('\n'), Qt); | |
4ed46869 KH |
1925 | } |
1926 | ||
1927 | #endif /* emacs */ | |
ab5796a9 MB |
1928 | |
1929 | /* arch-tag: 66a89b8d-4c28-47d3-9ca1-56f78440d69f | |
1930 | (do not change this comment) */ |