| 1 | /* Basic multilingual character support. |
| 2 | Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN. |
| 3 | Licensed to the Free Software Foundation. |
| 4 | |
| 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. |
| 11 | |
| 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. |
| 16 | |
| 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. */ |
| 21 | |
| 22 | /* At first, see the document in `charset.h' to understand the code in |
| 23 | this file. */ |
| 24 | |
| 25 | #include <stdio.h> |
| 26 | |
| 27 | #ifdef emacs |
| 28 | |
| 29 | #include <sys/types.h> |
| 30 | #include <config.h> |
| 31 | #include "lisp.h" |
| 32 | #include "buffer.h" |
| 33 | #include "charset.h" |
| 34 | #include "coding.h" |
| 35 | #include "disptab.h" |
| 36 | |
| 37 | #else /* not emacs */ |
| 38 | |
| 39 | #include "mulelib.h" |
| 40 | |
| 41 | #endif /* emacs */ |
| 42 | |
| 43 | Lisp_Object Qcharset, Qascii, Qcomposition; |
| 44 | Lisp_Object Qunknown; |
| 45 | |
| 46 | /* Declaration of special leading-codes. */ |
| 47 | int leading_code_composition; /* for composite characters */ |
| 48 | int leading_code_private_11; /* for private DIMENSION1 of 1-column */ |
| 49 | int leading_code_private_12; /* for private DIMENSION1 of 2-column */ |
| 50 | int leading_code_private_21; /* for private DIMENSION2 of 1-column */ |
| 51 | int leading_code_private_22; /* for private DIMENSION2 of 2-column */ |
| 52 | |
| 53 | /* Declaration of special charsets. */ |
| 54 | int charset_ascii; /* ASCII */ |
| 55 | int charset_composition; /* for a composite character */ |
| 56 | int charset_latin_iso8859_1; /* ISO8859-1 (Latin-1) */ |
| 57 | int charset_jisx0208_1978; /* JISX0208.1978 (Japanese Kanji old set) */ |
| 58 | int charset_jisx0208; /* JISX0208.1983 (Japanese Kanji) */ |
| 59 | int charset_katakana_jisx0201; /* JISX0201.Kana (Japanese Katakana) */ |
| 60 | int charset_latin_jisx0201; /* JISX0201.Roman (Japanese Roman) */ |
| 61 | int charset_big5_1; /* Big5 Level 1 (Chinese Traditional) */ |
| 62 | int charset_big5_2; /* Big5 Level 2 (Chinese Traditional) */ |
| 63 | |
| 64 | int min_composite_char; |
| 65 | |
| 66 | Lisp_Object Qcharset_table; |
| 67 | |
| 68 | /* A char-table containing information of each character set. */ |
| 69 | Lisp_Object Vcharset_table; |
| 70 | |
| 71 | /* A vector of charset symbol indexed by charset-id. This is used |
| 72 | only for returning charset symbol from C functions. */ |
| 73 | Lisp_Object Vcharset_symbol_table; |
| 74 | |
| 75 | /* A list of charset symbols ever defined. */ |
| 76 | Lisp_Object Vcharset_list; |
| 77 | |
| 78 | /* Vector of translation table ever defined. |
| 79 | ID of a translation table is used to index this vector. */ |
| 80 | Lisp_Object Vtranslation_table_vector; |
| 81 | |
| 82 | /* A char-table for characters which may invoke auto-filling. */ |
| 83 | Lisp_Object Vauto_fill_chars; |
| 84 | |
| 85 | Lisp_Object Qauto_fill_chars; |
| 86 | |
| 87 | /* Tables used by macros BYTES_BY_CHAR_HEAD and WIDTH_BY_CHAR_HEAD. */ |
| 88 | int bytes_by_char_head[256]; |
| 89 | int width_by_char_head[256]; |
| 90 | |
| 91 | /* Mapping table from ISO2022's charset (specified by DIMENSION, |
| 92 | CHARS, and FINAL-CHAR) to Emacs' charset. */ |
| 93 | int iso_charset_table[2][2][128]; |
| 94 | |
| 95 | /* Table of pointers to the structure `cmpchar_info' indexed by |
| 96 | CMPCHAR-ID. */ |
| 97 | struct cmpchar_info **cmpchar_table; |
| 98 | /* The current size of `cmpchar_table'. */ |
| 99 | static int cmpchar_table_size; |
| 100 | /* Number of the current composite characters. */ |
| 101 | int n_cmpchars; |
| 102 | |
| 103 | /* Variables used locally in the macro FETCH_MULTIBYTE_CHAR. */ |
| 104 | unsigned char *_fetch_multibyte_char_p; |
| 105 | int _fetch_multibyte_char_len; |
| 106 | |
| 107 | /* Offset to add to a non-ASCII value when inserting it. */ |
| 108 | int nonascii_insert_offset; |
| 109 | |
| 110 | /* Translation table for converting non-ASCII unibyte characters |
| 111 | to multibyte codes, or nil. */ |
| 112 | Lisp_Object Vnonascii_translation_table; |
| 113 | |
| 114 | /* List of all possible generic characters. */ |
| 115 | Lisp_Object Vgeneric_character_list; |
| 116 | |
| 117 | #define min(X, Y) ((X) < (Y) ? (X) : (Y)) |
| 118 | #define max(X, Y) ((X) > (Y) ? (X) : (Y)) |
| 119 | \f |
| 120 | void |
| 121 | invalid_character (c) |
| 122 | int c; |
| 123 | { |
| 124 | error ("Invalid character: 0%o, %d, 0x%x", c, c, c); |
| 125 | } |
| 126 | |
| 127 | |
| 128 | /* Set STR a pointer to the multi-byte form of the character C. If C |
| 129 | is not a composite character, the multi-byte form is set in WORKBUF |
| 130 | and STR points WORKBUF. The caller should allocate at least 4-byte |
| 131 | area at WORKBUF in advance. Returns the length of the multi-byte |
| 132 | form. If C is an invalid character to have a multi-byte form, |
| 133 | signal an error. |
| 134 | |
| 135 | Use macro `CHAR_STRING (C, WORKBUF, STR)' instead of calling this |
| 136 | function directly if C can be an ASCII character. */ |
| 137 | |
| 138 | int |
| 139 | non_ascii_char_to_string (c, workbuf, str) |
| 140 | int c; |
| 141 | unsigned char *workbuf, **str; |
| 142 | { |
| 143 | int charset, c1, c2; |
| 144 | |
| 145 | if (c & ~GLYPH_MASK_CHAR) /* This includes the case C is negative. */ |
| 146 | { |
| 147 | if (c & CHAR_META) |
| 148 | /* Move the meta bit to the right place for a string. */ |
| 149 | c |= 0x80; |
| 150 | if (c & CHAR_CTL) |
| 151 | c &= 0x9F; |
| 152 | else if (c & CHAR_SHIFT && (c & 0x7F) >= 'a' && (c & 0x7F) <= 'z') |
| 153 | c -= 'a' - 'A'; |
| 154 | *str = workbuf; |
| 155 | *workbuf = c; |
| 156 | return 1; |
| 157 | } |
| 158 | |
| 159 | if (c < 0) |
| 160 | invalid_character (c); |
| 161 | |
| 162 | if (COMPOSITE_CHAR_P (c)) |
| 163 | { |
| 164 | int cmpchar_id = COMPOSITE_CHAR_ID (c); |
| 165 | |
| 166 | if (cmpchar_id < n_cmpchars) |
| 167 | { |
| 168 | *str = cmpchar_table[cmpchar_id]->data; |
| 169 | return cmpchar_table[cmpchar_id]->len; |
| 170 | } |
| 171 | else |
| 172 | { |
| 173 | invalid_character (c); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); |
| 178 | if (!charset |
| 179 | || ! CHARSET_DEFINED_P (charset) |
| 180 | || c1 >= 0 && c1 < 32 |
| 181 | || c2 >= 0 && c2 < 32) |
| 182 | invalid_character (c); |
| 183 | |
| 184 | *str = workbuf; |
| 185 | *workbuf++ = CHARSET_LEADING_CODE_BASE (charset); |
| 186 | if (*workbuf = CHARSET_LEADING_CODE_EXT (charset)) |
| 187 | workbuf++; |
| 188 | *workbuf++ = c1 | 0x80; |
| 189 | if (c2 >= 0) |
| 190 | *workbuf++ = c2 | 0x80; |
| 191 | |
| 192 | return (workbuf - *str); |
| 193 | } |
| 194 | |
| 195 | /* Return a non-ASCII character of which multi-byte form is at STR of |
| 196 | length LEN. If ACTUAL_LEN is not NULL, the actual length of the |
| 197 | multibyte form is set to the address ACTUAL_LEN. |
| 198 | |
| 199 | If exclude_tail_garbage is nonzero, ACTUAL_LEN excludes gabage |
| 200 | bytes following the non-ASCII character. |
| 201 | |
| 202 | Use macro `STRING_CHAR (STR, LEN)' instead of calling this function |
| 203 | directly if STR can hold an ASCII character. */ |
| 204 | |
| 205 | int |
| 206 | string_to_non_ascii_char (str, len, actual_len, exclude_tail_garbage) |
| 207 | const unsigned char *str; |
| 208 | int len, *actual_len, exclude_tail_garbage; |
| 209 | { |
| 210 | int charset; |
| 211 | unsigned char c1, c2; |
| 212 | int c, bytes; |
| 213 | const unsigned char *begp = str; |
| 214 | |
| 215 | c = *str++; |
| 216 | bytes = 1; |
| 217 | |
| 218 | if (BASE_LEADING_CODE_P (c)) |
| 219 | do { |
| 220 | while (bytes < len && ! CHAR_HEAD_P (begp[bytes])) bytes++; |
| 221 | |
| 222 | if (c == LEADING_CODE_COMPOSITION) |
| 223 | { |
| 224 | int cmpchar_id = str_cmpchar_id (begp, bytes); |
| 225 | |
| 226 | if (cmpchar_id >= 0) |
| 227 | { |
| 228 | c = MAKE_COMPOSITE_CHAR (cmpchar_id); |
| 229 | str += cmpchar_table[cmpchar_id]->len - 1; |
| 230 | } |
| 231 | else |
| 232 | str += bytes - 1; |
| 233 | } |
| 234 | else |
| 235 | { |
| 236 | const unsigned char *endp = begp + bytes; |
| 237 | int charset = c, c1, c2 = 0; |
| 238 | |
| 239 | if (str >= endp) break; |
| 240 | if (c >= LEADING_CODE_PRIVATE_11 && c <= LEADING_CODE_PRIVATE_22) |
| 241 | { |
| 242 | charset = *str++; |
| 243 | if (str < endp) |
| 244 | c1 = *str++ & 0x7F; |
| 245 | else |
| 246 | c1 = charset, charset = c; |
| 247 | } |
| 248 | else |
| 249 | c1 = *str++ & 0x7f; |
| 250 | if (CHARSET_DEFINED_P (charset) |
| 251 | && CHARSET_DIMENSION (charset) == 2 |
| 252 | && str < endp) |
| 253 | c2 = *str++ & 0x7F; |
| 254 | c = MAKE_NON_ASCII_CHAR (charset, c1, c2); |
| 255 | } |
| 256 | } while (0); |
| 257 | |
| 258 | if (actual_len) |
| 259 | *actual_len = exclude_tail_garbage ? str - begp : bytes; |
| 260 | return c; |
| 261 | } |
| 262 | |
| 263 | /* Return the length of the multi-byte form at string STR of length LEN. */ |
| 264 | int |
| 265 | multibyte_form_length (str, len) |
| 266 | const unsigned char *str; |
| 267 | int len; |
| 268 | { |
| 269 | int bytes = 1; |
| 270 | |
| 271 | if (BASE_LEADING_CODE_P (*str)) |
| 272 | while (bytes < len && ! CHAR_HEAD_P (str[bytes])) bytes++; |
| 273 | |
| 274 | return bytes; |
| 275 | } |
| 276 | |
| 277 | /* Check if string STR of length LEN contains valid multi-byte form of |
| 278 | a character. If valid, charset and position codes of the character |
| 279 | is set at *CHARSET, *C1, and *C2, and return 0. If not valid, |
| 280 | return -1. This should be used only in the macro SPLIT_STRING |
| 281 | which checks range of STR in advance. */ |
| 282 | |
| 283 | int |
| 284 | split_non_ascii_string (str, len, charset, c1, c2) |
| 285 | register const unsigned char *str; |
| 286 | register unsigned char *c1, *c2; |
| 287 | register int len, *charset; |
| 288 | { |
| 289 | register unsigned int cs = *str++; |
| 290 | |
| 291 | if (cs == LEADING_CODE_COMPOSITION) |
| 292 | { |
| 293 | int cmpchar_id = str_cmpchar_id (str - 1, len); |
| 294 | |
| 295 | if (cmpchar_id < 0) |
| 296 | return -1; |
| 297 | *charset = cs, *c1 = cmpchar_id >> 7, *c2 = cmpchar_id & 0x7F; |
| 298 | } |
| 299 | else if ((cs < LEADING_CODE_PRIVATE_11 || (cs = *str++) >= 0xA0) |
| 300 | && CHARSET_DEFINED_P (cs)) |
| 301 | { |
| 302 | *charset = cs; |
| 303 | if (*str < 0xA0) |
| 304 | return -1; |
| 305 | *c1 = (*str++) & 0x7F; |
| 306 | if (CHARSET_DIMENSION (cs) == 2) |
| 307 | { |
| 308 | if (*str < 0xA0) |
| 309 | return -1; |
| 310 | *c2 = (*str++) & 0x7F; |
| 311 | } |
| 312 | } |
| 313 | else |
| 314 | return -1; |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | /* Translate character C by translation table TABLE. If C |
| 319 | is negative, translate a character specified by CHARSET, C1, and C2 |
| 320 | (C1 and C2 are code points of the character). If no translation is |
| 321 | found in TABLE, return C. */ |
| 322 | int |
| 323 | translate_char (table, c, charset, c1, c2) |
| 324 | Lisp_Object table; |
| 325 | int c, charset, c1, c2; |
| 326 | { |
| 327 | Lisp_Object ch; |
| 328 | int alt_charset, alt_c1, alt_c2, dimension; |
| 329 | |
| 330 | if (c < 0) c = MAKE_CHAR (charset, c1, c2); |
| 331 | if (!CHAR_TABLE_P (table) |
| 332 | || (ch = Faref (table, make_number (c)), !INTEGERP (ch)) |
| 333 | || XINT (ch) < 0) |
| 334 | return c; |
| 335 | |
| 336 | SPLIT_CHAR (XFASTINT (ch), alt_charset, alt_c1, alt_c2); |
| 337 | dimension = CHARSET_DIMENSION (alt_charset); |
| 338 | if (dimension == 1 && alt_c1 > 0 || dimension == 2 && alt_c2 > 0) |
| 339 | /* CH is not a generic character, just return it. */ |
| 340 | return XFASTINT (ch); |
| 341 | |
| 342 | /* Since CH is a generic character, we must return a specific |
| 343 | charater which has the same position codes as C from CH. */ |
| 344 | if (charset < 0) |
| 345 | SPLIT_CHAR (c, charset, c1, c2); |
| 346 | if (dimension != CHARSET_DIMENSION (charset)) |
| 347 | /* We can't make such a character because of dimension mismatch. */ |
| 348 | return c; |
| 349 | return MAKE_CHAR (alt_charset, c1, c2); |
| 350 | } |
| 351 | |
| 352 | /* Convert the unibyte character C to multibyte based on |
| 353 | Vnonascii_translation_table or nonascii_insert_offset. If they can't |
| 354 | convert C to a valid multibyte character, convert it based on |
| 355 | DEFAULT_NONASCII_INSERT_OFFSET which makes C a Latin-1 character. */ |
| 356 | |
| 357 | int |
| 358 | unibyte_char_to_multibyte (c) |
| 359 | int c; |
| 360 | { |
| 361 | if (c < 0400) |
| 362 | { |
| 363 | int c_save = c; |
| 364 | |
| 365 | if (! NILP (Vnonascii_translation_table)) |
| 366 | { |
| 367 | c = XINT (Faref (Vnonascii_translation_table, make_number (c))); |
| 368 | if (c >= 0400 && ! VALID_MULTIBYTE_CHAR_P (c)) |
| 369 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
| 370 | } |
| 371 | else if (c >= 0240 && nonascii_insert_offset > 0) |
| 372 | { |
| 373 | c += nonascii_insert_offset; |
| 374 | if (c < 0400 || ! VALID_MULTIBYTE_CHAR_P (c)) |
| 375 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
| 376 | } |
| 377 | else if (c >= 0240) |
| 378 | c = c_save + DEFAULT_NONASCII_INSERT_OFFSET; |
| 379 | } |
| 380 | return c; |
| 381 | } |
| 382 | |
| 383 | |
| 384 | /* Convert the multibyte character C to unibyte 8-bit character based |
| 385 | on Vnonascii_translation_table or nonascii_insert_offset. If |
| 386 | REV_TBL is non-nil, it should be a reverse table of |
| 387 | Vnonascii_translation_table, i.e. what given by: |
| 388 | Fchar_table_extra_slot (Vnonascii_translation_table, make_number (0)) */ |
| 389 | |
| 390 | int |
| 391 | multibyte_char_to_unibyte (c, rev_tbl) |
| 392 | int c; |
| 393 | Lisp_Object rev_tbl; |
| 394 | { |
| 395 | if (!SINGLE_BYTE_CHAR_P (c)) |
| 396 | { |
| 397 | int c_save = c; |
| 398 | |
| 399 | if (! CHAR_TABLE_P (rev_tbl) |
| 400 | && CHAR_TABLE_P (Vnonascii_translation_table)) |
| 401 | rev_tbl = Fchar_table_extra_slot (Vnonascii_translation_table, |
| 402 | make_number (0)); |
| 403 | if (CHAR_TABLE_P (rev_tbl)) |
| 404 | { |
| 405 | Lisp_Object temp; |
| 406 | temp = Faref (rev_tbl, make_number (c)); |
| 407 | if (INTEGERP (temp)) |
| 408 | c = XINT (temp); |
| 409 | if (c >= 256) |
| 410 | c = (c_save & 0177) + 0200; |
| 411 | } |
| 412 | else |
| 413 | { |
| 414 | if (nonascii_insert_offset > 0) |
| 415 | c -= nonascii_insert_offset; |
| 416 | if (c < 128 || c >= 256) |
| 417 | c = (c_save & 0177) + 0200; |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | return c; |
| 422 | } |
| 423 | |
| 424 | \f |
| 425 | /* Update the table Vcharset_table with the given arguments (see the |
| 426 | document of `define-charset' for the meaning of each argument). |
| 427 | Several other table contents are also updated. The caller should |
| 428 | check the validity of CHARSET-ID and the remaining arguments in |
| 429 | advance. */ |
| 430 | |
| 431 | void |
| 432 | update_charset_table (charset_id, dimension, chars, width, direction, |
| 433 | iso_final_char, iso_graphic_plane, |
| 434 | short_name, long_name, description) |
| 435 | Lisp_Object charset_id, dimension, chars, width, direction; |
| 436 | Lisp_Object iso_final_char, iso_graphic_plane; |
| 437 | Lisp_Object short_name, long_name, description; |
| 438 | { |
| 439 | int charset = XINT (charset_id); |
| 440 | int bytes; |
| 441 | unsigned char leading_code_base, leading_code_ext; |
| 442 | |
| 443 | if (NILP (CHARSET_TABLE_ENTRY (charset))) |
| 444 | CHARSET_TABLE_ENTRY (charset) |
| 445 | = Fmake_vector (make_number (CHARSET_MAX_IDX), Qnil); |
| 446 | |
| 447 | /* Get byte length of multibyte form, base leading-code, and |
| 448 | extended leading-code of the charset. See the comment under the |
| 449 | title "GENERAL NOTE on CHARACTER SET (CHARSET)" in charset.h. */ |
| 450 | bytes = XINT (dimension); |
| 451 | if (charset < MIN_CHARSET_PRIVATE_DIMENSION1) |
| 452 | { |
| 453 | /* Official charset, it doesn't have an extended leading-code. */ |
| 454 | if (charset != CHARSET_ASCII) |
| 455 | bytes += 1; /* For a base leading-code. */ |
| 456 | leading_code_base = charset; |
| 457 | leading_code_ext = 0; |
| 458 | } |
| 459 | else |
| 460 | { |
| 461 | /* Private charset. */ |
| 462 | bytes += 2; /* For base and extended leading-codes. */ |
| 463 | leading_code_base |
| 464 | = (charset < LEADING_CODE_EXT_12 |
| 465 | ? LEADING_CODE_PRIVATE_11 |
| 466 | : (charset < LEADING_CODE_EXT_21 |
| 467 | ? LEADING_CODE_PRIVATE_12 |
| 468 | : (charset < LEADING_CODE_EXT_22 |
| 469 | ? LEADING_CODE_PRIVATE_21 |
| 470 | : LEADING_CODE_PRIVATE_22))); |
| 471 | leading_code_ext = charset; |
| 472 | } |
| 473 | |
| 474 | if (BYTES_BY_CHAR_HEAD (leading_code_base) != bytes) |
| 475 | error ("Invalid dimension for the charset-ID %d", charset); |
| 476 | |
| 477 | CHARSET_TABLE_INFO (charset, CHARSET_ID_IDX) = charset_id; |
| 478 | CHARSET_TABLE_INFO (charset, CHARSET_BYTES_IDX) = make_number (bytes); |
| 479 | CHARSET_TABLE_INFO (charset, CHARSET_DIMENSION_IDX) = dimension; |
| 480 | CHARSET_TABLE_INFO (charset, CHARSET_CHARS_IDX) = chars; |
| 481 | CHARSET_TABLE_INFO (charset, CHARSET_WIDTH_IDX) = width; |
| 482 | CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX) = direction; |
| 483 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_BASE_IDX) |
| 484 | = make_number (leading_code_base); |
| 485 | CHARSET_TABLE_INFO (charset, CHARSET_LEADING_CODE_EXT_IDX) |
| 486 | = make_number (leading_code_ext); |
| 487 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_FINAL_CHAR_IDX) = iso_final_char; |
| 488 | CHARSET_TABLE_INFO (charset, CHARSET_ISO_GRAPHIC_PLANE_IDX) |
| 489 | = iso_graphic_plane; |
| 490 | CHARSET_TABLE_INFO (charset, CHARSET_SHORT_NAME_IDX) = short_name; |
| 491 | CHARSET_TABLE_INFO (charset, CHARSET_LONG_NAME_IDX) = long_name; |
| 492 | CHARSET_TABLE_INFO (charset, CHARSET_DESCRIPTION_IDX) = description; |
| 493 | CHARSET_TABLE_INFO (charset, CHARSET_PLIST_IDX) = Qnil; |
| 494 | |
| 495 | { |
| 496 | /* If we have already defined a charset which has the same |
| 497 | DIMENSION, CHARS and ISO-FINAL-CHAR but the different |
| 498 | DIRECTION, we must update the entry REVERSE-CHARSET of both |
| 499 | charsets. If there's no such charset, the value of the entry |
| 500 | is set to nil. */ |
| 501 | int i; |
| 502 | |
| 503 | for (i = 0; i <= MAX_CHARSET; i++) |
| 504 | if (!NILP (CHARSET_TABLE_ENTRY (i))) |
| 505 | { |
| 506 | if (CHARSET_DIMENSION (i) == XINT (dimension) |
| 507 | && CHARSET_CHARS (i) == XINT (chars) |
| 508 | && CHARSET_ISO_FINAL_CHAR (i) == XINT (iso_final_char) |
| 509 | && CHARSET_DIRECTION (i) != XINT (direction)) |
| 510 | { |
| 511 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) |
| 512 | = make_number (i); |
| 513 | CHARSET_TABLE_INFO (i, CHARSET_REVERSE_CHARSET_IDX) = charset_id; |
| 514 | break; |
| 515 | } |
| 516 | } |
| 517 | if (i > MAX_CHARSET) |
| 518 | /* No such a charset. */ |
| 519 | CHARSET_TABLE_INFO (charset, CHARSET_REVERSE_CHARSET_IDX) |
| 520 | = make_number (-1); |
| 521 | } |
| 522 | |
| 523 | if (charset != CHARSET_ASCII |
| 524 | && charset < MIN_CHARSET_PRIVATE_DIMENSION1) |
| 525 | { |
| 526 | width_by_char_head[leading_code_base] = XINT (width); |
| 527 | |
| 528 | /* Update table emacs_code_class. */ |
| 529 | emacs_code_class[charset] = (bytes == 2 |
| 530 | ? EMACS_leading_code_2 |
| 531 | : (bytes == 3 |
| 532 | ? EMACS_leading_code_3 |
| 533 | : EMACS_leading_code_4)); |
| 534 | } |
| 535 | |
| 536 | /* Update table iso_charset_table. */ |
| 537 | if (ISO_CHARSET_TABLE (dimension, chars, iso_final_char) < 0) |
| 538 | ISO_CHARSET_TABLE (dimension, chars, iso_final_char) = charset; |
| 539 | } |
| 540 | |
| 541 | #ifdef emacs |
| 542 | |
| 543 | /* Return charset id of CHARSET_SYMBOL, or return -1 if CHARSET_SYMBOL |
| 544 | is invalid. */ |
| 545 | int |
| 546 | get_charset_id (charset_symbol) |
| 547 | Lisp_Object charset_symbol; |
| 548 | { |
| 549 | Lisp_Object val; |
| 550 | int charset; |
| 551 | |
| 552 | return ((SYMBOLP (charset_symbol) |
| 553 | && (val = Fget (charset_symbol, Qcharset), VECTORP (val)) |
| 554 | && (charset = XINT (XVECTOR (val)->contents[CHARSET_ID_IDX]), |
| 555 | CHARSET_VALID_P (charset))) |
| 556 | ? charset : -1); |
| 557 | } |
| 558 | |
| 559 | /* Return an identification number for a new private charset of |
| 560 | DIMENSION and WIDTH. If there's no more room for the new charset, |
| 561 | return 0. */ |
| 562 | Lisp_Object |
| 563 | get_new_private_charset_id (dimension, width) |
| 564 | int dimension, width; |
| 565 | { |
| 566 | int charset, from, to; |
| 567 | |
| 568 | if (dimension == 1) |
| 569 | { |
| 570 | if (width == 1) |
| 571 | from = LEADING_CODE_EXT_11, to = LEADING_CODE_EXT_12; |
| 572 | else |
| 573 | from = LEADING_CODE_EXT_12, to = LEADING_CODE_EXT_21; |
| 574 | } |
| 575 | else |
| 576 | { |
| 577 | if (width == 1) |
| 578 | from = LEADING_CODE_EXT_21, to = LEADING_CODE_EXT_22; |
| 579 | else |
| 580 | from = LEADING_CODE_EXT_22, to = LEADING_CODE_EXT_MAX + 1; |
| 581 | } |
| 582 | |
| 583 | for (charset = from; charset < to; charset++) |
| 584 | if (!CHARSET_DEFINED_P (charset)) break; |
| 585 | |
| 586 | return make_number (charset < to ? charset : 0); |
| 587 | } |
| 588 | |
| 589 | DEFUN ("define-charset", Fdefine_charset, Sdefine_charset, 3, 3, 0, |
| 590 | "Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR.\n\ |
| 591 | If CHARSET-ID is nil, it is decided automatically, which means CHARSET is\n\ |
| 592 | treated as a private charset.\n\ |
| 593 | INFO-VECTOR is a vector of the format:\n\ |
| 594 | [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE\n\ |
| 595 | SHORT-NAME LONG-NAME DESCRIPTION]\n\ |
| 596 | The meanings of each elements is as follows:\n\ |
| 597 | DIMENSION (integer) is the number of bytes to represent a character: 1 or 2.\n\ |
| 598 | CHARS (integer) is the number of characters in a dimension: 94 or 96.\n\ |
| 599 | WIDTH (integer) is the number of columns a character in the charset\n\ |
| 600 | occupies on the screen: one of 0, 1, and 2.\n\ |
| 601 | \n\ |
| 602 | DIRECTION (integer) is the rendering direction of characters in the\n\ |
| 603 | charset when rendering. If 0, render from left to right, else\n\ |
| 604 | render from right to left.\n\ |
| 605 | \n\ |
| 606 | ISO-FINAL-CHAR (character) is the final character of the\n\ |
| 607 | corresponding ISO 2022 charset.\n\ |
| 608 | \n\ |
| 609 | ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked\n\ |
| 610 | while encoding to variants of ISO 2022 coding system, one of the\n\ |
| 611 | following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).\n\ |
| 612 | \n\ |
| 613 | SHORT-NAME (string) is the short name to refer to the charset.\n\ |
| 614 | \n\ |
| 615 | LONG-NAME (string) is the long name to refer to the charset.\n\ |
| 616 | \n\ |
| 617 | DESCRIPTION (string) is the description string of the charset.") |
| 618 | (charset_id, charset_symbol, info_vector) |
| 619 | Lisp_Object charset_id, charset_symbol, info_vector; |
| 620 | { |
| 621 | Lisp_Object *vec; |
| 622 | |
| 623 | if (!NILP (charset_id)) |
| 624 | CHECK_NUMBER (charset_id, 0); |
| 625 | CHECK_SYMBOL (charset_symbol, 1); |
| 626 | CHECK_VECTOR (info_vector, 2); |
| 627 | |
| 628 | if (! NILP (charset_id)) |
| 629 | { |
| 630 | if (! CHARSET_VALID_P (XINT (charset_id))) |
| 631 | error ("Invalid CHARSET: %d", XINT (charset_id)); |
| 632 | else if (CHARSET_DEFINED_P (XINT (charset_id))) |
| 633 | error ("Already defined charset: %d", XINT (charset_id)); |
| 634 | } |
| 635 | |
| 636 | vec = XVECTOR (info_vector)->contents; |
| 637 | if (XVECTOR (info_vector)->size != 9 |
| 638 | || !INTEGERP (vec[0]) || !(XINT (vec[0]) == 1 || XINT (vec[0]) == 2) |
| 639 | || !INTEGERP (vec[1]) || !(XINT (vec[1]) == 94 || XINT (vec[1]) == 96) |
| 640 | || !INTEGERP (vec[2]) || !(XINT (vec[2]) == 1 || XINT (vec[2]) == 2) |
| 641 | || !INTEGERP (vec[3]) || !(XINT (vec[3]) == 0 || XINT (vec[3]) == 1) |
| 642 | || !INTEGERP (vec[4]) || !(XINT (vec[4]) >= '0' && XINT (vec[4]) <= '~') |
| 643 | || !INTEGERP (vec[5]) || !(XINT (vec[5]) == 0 || XINT (vec[5]) == 1) |
| 644 | || !STRINGP (vec[6]) |
| 645 | || !STRINGP (vec[7]) |
| 646 | || !STRINGP (vec[8])) |
| 647 | error ("Invalid info-vector argument for defining charset %s", |
| 648 | XSYMBOL (charset_symbol)->name->data); |
| 649 | |
| 650 | if (NILP (charset_id)) |
| 651 | { |
| 652 | charset_id = get_new_private_charset_id (XINT (vec[0]), XINT (vec[2])); |
| 653 | if (XINT (charset_id) == 0) |
| 654 | error ("There's no room for a new private charset %s", |
| 655 | XSYMBOL (charset_symbol)->name->data); |
| 656 | } |
| 657 | |
| 658 | update_charset_table (charset_id, vec[0], vec[1], vec[2], vec[3], |
| 659 | vec[4], vec[5], vec[6], vec[7], vec[8]); |
| 660 | Fput (charset_symbol, Qcharset, CHARSET_TABLE_ENTRY (XINT (charset_id))); |
| 661 | CHARSET_SYMBOL (XINT (charset_id)) = charset_symbol; |
| 662 | Vcharset_list = Fcons (charset_symbol, Vcharset_list); |
| 663 | return Qnil; |
| 664 | } |
| 665 | |
| 666 | DEFUN ("generic-character-list", Fgeneric_character_list, |
| 667 | Sgeneric_character_list, 0, 0, 0, |
| 668 | "Return a list of all possible generic characters.\n\ |
| 669 | It includes a generic character for a charset not yet defined.") |
| 670 | () |
| 671 | { |
| 672 | return Vgeneric_character_list; |
| 673 | } |
| 674 | |
| 675 | DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char, |
| 676 | Sget_unused_iso_final_char, 2, 2, 0, |
| 677 | "Return an unsed ISO's final char for a charset of DIMENISION and CHARS.\n\ |
| 678 | DIMENSION is the number of bytes to represent a character: 1 or 2.\n\ |
| 679 | CHARS is the number of characters in a dimension: 94 or 96.\n\ |
| 680 | \n\ |
| 681 | This final char is for private use, thus the range is `0' (48) .. `?' (63).\n\ |
| 682 | If there's no unused final char for the specified kind of charset,\n\ |
| 683 | return nil.") |
| 684 | (dimension, chars) |
| 685 | Lisp_Object dimension, chars; |
| 686 | { |
| 687 | int final_char; |
| 688 | |
| 689 | CHECK_NUMBER (dimension, 0); |
| 690 | CHECK_NUMBER (chars, 1); |
| 691 | if (XINT (dimension) != 1 && XINT (dimension) != 2) |
| 692 | error ("Invalid charset dimension %d, it should be 1 or 2", |
| 693 | XINT (dimension)); |
| 694 | if (XINT (chars) != 94 && XINT (chars) != 96) |
| 695 | error ("Invalid charset chars %d, it should be 94 or 96", |
| 696 | XINT (chars)); |
| 697 | for (final_char = '0'; final_char <= '?'; final_char++) |
| 698 | { |
| 699 | if (ISO_CHARSET_TABLE (dimension, chars, make_number (final_char)) < 0) |
| 700 | break; |
| 701 | } |
| 702 | return (final_char <= '?' ? make_number (final_char) : Qnil); |
| 703 | } |
| 704 | |
| 705 | DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset, Sdeclare_equiv_charset, |
| 706 | 4, 4, 0, |
| 707 | "Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.\n\ |
| 708 | CHARSET should be defined by `defined-charset' in advance.") |
| 709 | (dimension, chars, final_char, charset_symbol) |
| 710 | Lisp_Object dimension, chars, final_char, charset_symbol; |
| 711 | { |
| 712 | int charset; |
| 713 | |
| 714 | CHECK_NUMBER (dimension, 0); |
| 715 | CHECK_NUMBER (chars, 1); |
| 716 | CHECK_NUMBER (final_char, 2); |
| 717 | CHECK_SYMBOL (charset_symbol, 3); |
| 718 | |
| 719 | if (XINT (dimension) != 1 && XINT (dimension) != 2) |
| 720 | error ("Invalid DIMENSION %d, it should be 1 or 2", XINT (dimension)); |
| 721 | if (XINT (chars) != 94 && XINT (chars) != 96) |
| 722 | error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars)); |
| 723 | if (XINT (final_char) < '0' || XFASTINT (final_char) > '~') |
| 724 | error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars)); |
| 725 | if ((charset = get_charset_id (charset_symbol)) < 0) |
| 726 | error ("Invalid charset %s", XSYMBOL (charset_symbol)->name->data); |
| 727 | |
| 728 | ISO_CHARSET_TABLE (dimension, chars, final_char) = charset; |
| 729 | return Qnil; |
| 730 | } |
| 731 | |
| 732 | /* Return number of different charsets in STR of length LEN. In |
| 733 | addition, for each found charset N, CHARSETS[N] is set 1. The |
| 734 | caller should allocate CHARSETS (MAX_CHARSET + 1 elements) in advance. |
| 735 | It may lookup a translation table TABLE if supplied. |
| 736 | |
| 737 | If CMPCHARP is nonzero and some composite character is found, |
| 738 | CHARSETS[128] is also set 1 and the returned number is incremented |
| 739 | by 1. |
| 740 | |
| 741 | If MULTIBYTE is zero, do not check multibyte characters, i.e. if |
| 742 | any ASCII codes (7-bit) are found, CHARSET[0] is set to 1, if any |
| 743 | 8-bit codes are found CHARSET[1] is set to 1. */ |
| 744 | |
| 745 | int |
| 746 | find_charset_in_str (str, len, charsets, table, cmpcharp, multibyte) |
| 747 | unsigned char *str; |
| 748 | int len, *charsets; |
| 749 | Lisp_Object table; |
| 750 | int cmpcharp; |
| 751 | int multibyte; |
| 752 | { |
| 753 | register int num = 0, c; |
| 754 | |
| 755 | if (! multibyte) |
| 756 | { |
| 757 | unsigned char *endp = str + len; |
| 758 | int maskbits = 0; |
| 759 | |
| 760 | while (str < endp && maskbits != 3) |
| 761 | maskbits |= (*str++ < 0x80 ? 1 : 2); |
| 762 | if (maskbits & 1) |
| 763 | { |
| 764 | charsets[0] = 1; |
| 765 | num++; |
| 766 | } |
| 767 | if (maskbits & 2) |
| 768 | { |
| 769 | charsets[1] = 1; |
| 770 | num++; |
| 771 | } |
| 772 | return num; |
| 773 | } |
| 774 | |
| 775 | if (! CHAR_TABLE_P (table)) |
| 776 | table = Qnil; |
| 777 | |
| 778 | while (len > 0) |
| 779 | { |
| 780 | int bytes, charset; |
| 781 | c = *str; |
| 782 | |
| 783 | if (c == LEADING_CODE_COMPOSITION) |
| 784 | { |
| 785 | int cmpchar_id = str_cmpchar_id (str, len); |
| 786 | GLYPH *glyph; |
| 787 | |
| 788 | if (cmpchar_id >= 0) |
| 789 | { |
| 790 | struct cmpchar_info *cmp_p = cmpchar_table[cmpchar_id]; |
| 791 | int i; |
| 792 | |
| 793 | for (i = 0; i < cmp_p->glyph_len; i++) |
| 794 | { |
| 795 | c = cmp_p->glyph[i]; |
| 796 | if (!NILP (table)) |
| 797 | { |
| 798 | if ((c = translate_char (table, c, 0, 0, 0)) < 0) |
| 799 | c = cmp_p->glyph[i]; |
| 800 | } |
| 801 | if ((charset = CHAR_CHARSET (c)) < 0) |
| 802 | charset = CHARSET_ASCII; |
| 803 | if (!charsets[charset]) |
| 804 | { |
| 805 | charsets[charset] = 1; |
| 806 | num += 1; |
| 807 | } |
| 808 | } |
| 809 | str += cmp_p->len; |
| 810 | len -= cmp_p->len; |
| 811 | if (cmpcharp && !charsets[CHARSET_COMPOSITION]) |
| 812 | { |
| 813 | charsets[CHARSET_COMPOSITION] = 1; |
| 814 | num += 1; |
| 815 | } |
| 816 | continue; |
| 817 | } |
| 818 | |
| 819 | charset = 1; /* This leads to `unknown' charset. */ |
| 820 | bytes = 1; |
| 821 | } |
| 822 | else |
| 823 | { |
| 824 | c = STRING_CHAR_AND_LENGTH (str, len, bytes); |
| 825 | if (! NILP (table)) |
| 826 | { |
| 827 | int c1 = translate_char (table, c, 0, 0, 0); |
| 828 | if (c1 >= 0) |
| 829 | c = c1; |
| 830 | } |
| 831 | charset = CHAR_CHARSET (c); |
| 832 | } |
| 833 | |
| 834 | if (!charsets[charset]) |
| 835 | { |
| 836 | charsets[charset] = 1; |
| 837 | num += 1; |
| 838 | } |
| 839 | str += bytes; |
| 840 | len -= bytes; |
| 841 | } |
| 842 | return num; |
| 843 | } |
| 844 | |
| 845 | DEFUN ("find-charset-region", Ffind_charset_region, Sfind_charset_region, |
| 846 | 2, 3, 0, |
| 847 | "Return a list of charsets in the region between BEG and END.\n\ |
| 848 | BEG and END are buffer positions.\n\ |
| 849 | If the region contains any composite character,\n\ |
| 850 | `composition' is included in the returned list.\n\ |
| 851 | Optional arg TABLE if non-nil is a translation table to look up.\n\ |
| 852 | \n\ |
| 853 | If the region contains invalid multiybte characters,\n\ |
| 854 | `unknown' is included in the returned list. |
| 855 | \n\ |
| 856 | If the current buffer is unibyte, the returned list contains\n\ |
| 857 | `ascii' if any 7-bit characters are found,\n\ |
| 858 | and `unknown' if any 8-bit characters are found.") |
| 859 | (beg, end, table) |
| 860 | Lisp_Object beg, end, table; |
| 861 | { |
| 862 | int charsets[MAX_CHARSET + 1]; |
| 863 | int from, from_byte, to, stop, stop_byte, i; |
| 864 | Lisp_Object val; |
| 865 | int undefined; |
| 866 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
| 867 | |
| 868 | validate_region (&beg, &end); |
| 869 | from = XFASTINT (beg); |
| 870 | stop = to = XFASTINT (end); |
| 871 | |
| 872 | if (from < GPT && GPT < to) |
| 873 | { |
| 874 | stop = GPT; |
| 875 | stop_byte = GPT_BYTE; |
| 876 | } |
| 877 | else |
| 878 | stop_byte = CHAR_TO_BYTE (stop); |
| 879 | |
| 880 | from_byte = CHAR_TO_BYTE (from); |
| 881 | |
| 882 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
| 883 | while (1) |
| 884 | { |
| 885 | find_charset_in_str (BYTE_POS_ADDR (from_byte), stop_byte - from_byte, |
| 886 | charsets, table, 1, multibyte); |
| 887 | if (stop < to) |
| 888 | { |
| 889 | from = stop, from_byte = stop_byte; |
| 890 | stop = to, stop_byte = CHAR_TO_BYTE (stop); |
| 891 | } |
| 892 | else |
| 893 | break; |
| 894 | } |
| 895 | |
| 896 | val = Qnil; |
| 897 | undefined = 0; |
| 898 | for (i = (multibyte ? MAX_CHARSET : 1); i >= 0; i--) |
| 899 | if (charsets[i]) |
| 900 | { |
| 901 | if (CHARSET_DEFINED_P (i) || i == CHARSET_COMPOSITION) |
| 902 | val = Fcons (CHARSET_SYMBOL (i), val); |
| 903 | else |
| 904 | undefined = 1; |
| 905 | } |
| 906 | if (undefined) |
| 907 | val = Fcons (Qunknown, val); |
| 908 | return val; |
| 909 | } |
| 910 | |
| 911 | DEFUN ("find-charset-string", Ffind_charset_string, Sfind_charset_string, |
| 912 | 1, 2, 0, |
| 913 | "Return a list of charsets in STR.\n\ |
| 914 | If the string contains any composite characters,\n\ |
| 915 | `composition' is included in the returned list.\n\ |
| 916 | Optional arg TABLE if non-nil is a translation table to look up.\n\ |
| 917 | \n\ |
| 918 | If the region contains invalid multiybte characters,\n\ |
| 919 | `unknown' is included in the returned list.\n\ |
| 920 | \n\ |
| 921 | If STR is unibyte, the returned list contains\n\ |
| 922 | `ascii' if any 7-bit characters are found,\n\ |
| 923 | and `unknown' if any 8-bit characters are found.") |
| 924 | (str, table) |
| 925 | Lisp_Object str, table; |
| 926 | { |
| 927 | int charsets[MAX_CHARSET + 1]; |
| 928 | int i; |
| 929 | Lisp_Object val; |
| 930 | int undefined; |
| 931 | int multibyte; |
| 932 | |
| 933 | CHECK_STRING (str, 0); |
| 934 | multibyte = STRING_MULTIBYTE (str); |
| 935 | |
| 936 | bzero (charsets, (MAX_CHARSET + 1) * sizeof (int)); |
| 937 | find_charset_in_str (XSTRING (str)->data, STRING_BYTES (XSTRING (str)), |
| 938 | charsets, table, 1, multibyte); |
| 939 | val = Qnil; |
| 940 | undefined = 0; |
| 941 | for (i = (multibyte ? MAX_CHARSET : 1); i >= 0; i--) |
| 942 | if (charsets[i]) |
| 943 | { |
| 944 | if (CHARSET_DEFINED_P (i) || i == CHARSET_COMPOSITION) |
| 945 | val = Fcons (CHARSET_SYMBOL (i), val); |
| 946 | else |
| 947 | undefined = 1; |
| 948 | } |
| 949 | if (undefined) |
| 950 | val = Fcons (Qunknown, val); |
| 951 | return val; |
| 952 | } |
| 953 | \f |
| 954 | DEFUN ("make-char-internal", Fmake_char_internal, Smake_char_internal, 1, 3, 0, |
| 955 | "") |
| 956 | (charset, code1, code2) |
| 957 | Lisp_Object charset, code1, code2; |
| 958 | { |
| 959 | CHECK_NUMBER (charset, 0); |
| 960 | |
| 961 | if (NILP (code1)) |
| 962 | XSETFASTINT (code1, 0); |
| 963 | else |
| 964 | CHECK_NUMBER (code1, 1); |
| 965 | if (NILP (code2)) |
| 966 | XSETFASTINT (code2, 0); |
| 967 | else |
| 968 | CHECK_NUMBER (code2, 2); |
| 969 | |
| 970 | if (!CHARSET_DEFINED_P (XINT (charset))) |
| 971 | error ("Invalid charset: %d", XINT (charset)); |
| 972 | |
| 973 | return make_number (MAKE_CHAR (XINT (charset), XINT (code1), XINT (code2))); |
| 974 | } |
| 975 | |
| 976 | DEFUN ("split-char", Fsplit_char, Ssplit_char, 1, 1, 0, |
| 977 | "Return list of charset and one or two position-codes of CHAR.\n\ |
| 978 | If CHAR is invalid as a character code,\n\ |
| 979 | return a list of symbol `unknown' and CHAR.") |
| 980 | (ch) |
| 981 | Lisp_Object ch; |
| 982 | { |
| 983 | Lisp_Object val; |
| 984 | int c, charset, c1, c2; |
| 985 | |
| 986 | CHECK_NUMBER (ch, 0); |
| 987 | c = XFASTINT (ch); |
| 988 | if (!CHAR_VALID_P (c, 1)) |
| 989 | return Fcons (Qunknown, Fcons (ch, Qnil)); |
| 990 | SPLIT_CHAR (XFASTINT (ch), charset, c1, c2); |
| 991 | return (c2 >= 0 |
| 992 | ? Fcons (CHARSET_SYMBOL (charset), |
| 993 | Fcons (make_number (c1), Fcons (make_number (c2), Qnil))) |
| 994 | : Fcons (CHARSET_SYMBOL (charset), Fcons (make_number (c1), Qnil))); |
| 995 | } |
| 996 | |
| 997 | DEFUN ("char-charset", Fchar_charset, Schar_charset, 1, 1, 0, |
| 998 | "Return charset of CHAR.") |
| 999 | (ch) |
| 1000 | Lisp_Object ch; |
| 1001 | { |
| 1002 | CHECK_NUMBER (ch, 0); |
| 1003 | |
| 1004 | return CHARSET_SYMBOL (CHAR_CHARSET (XINT (ch))); |
| 1005 | } |
| 1006 | |
| 1007 | DEFUN ("charset-after", Fcharset_after, Scharset_after, 0, 1, 0, |
| 1008 | "Return charset of a character in current buffer at position POS.\n\ |
| 1009 | If POS is nil, it defauls to the current point.") |
| 1010 | (pos) |
| 1011 | Lisp_Object pos; |
| 1012 | { |
| 1013 | register int pos_byte, c, charset; |
| 1014 | register unsigned char *p; |
| 1015 | |
| 1016 | if (NILP (pos)) |
| 1017 | pos_byte = PT_BYTE; |
| 1018 | else if (MARKERP (pos)) |
| 1019 | pos_byte = marker_byte_position (pos); |
| 1020 | else |
| 1021 | { |
| 1022 | CHECK_NUMBER (pos, 0); |
| 1023 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
| 1024 | } |
| 1025 | p = BYTE_POS_ADDR (pos_byte); |
| 1026 | c = STRING_CHAR (p, Z_BYTE - pos_byte); |
| 1027 | charset = CHAR_CHARSET (c); |
| 1028 | return CHARSET_SYMBOL (charset); |
| 1029 | } |
| 1030 | |
| 1031 | DEFUN ("iso-charset", Fiso_charset, Siso_charset, 3, 3, 0, |
| 1032 | "Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.\n\ |
| 1033 | \n\ |
| 1034 | ISO 2022's designation sequence (escape sequence) distinguishes charsets\n\ |
| 1035 | by their DIMENSION, CHARS, and FINAL-CHAR,\n\ |
| 1036 | where as Emacs distinguishes them by charset symbol.\n\ |
| 1037 | See the documentation of the function `charset-info' for the meanings of\n\ |
| 1038 | DIMENSION, CHARS, and FINAL-CHAR.") |
| 1039 | (dimension, chars, final_char) |
| 1040 | Lisp_Object dimension, chars, final_char; |
| 1041 | { |
| 1042 | int charset; |
| 1043 | |
| 1044 | CHECK_NUMBER (dimension, 0); |
| 1045 | CHECK_NUMBER (chars, 1); |
| 1046 | CHECK_NUMBER (final_char, 2); |
| 1047 | |
| 1048 | if ((charset = ISO_CHARSET_TABLE (dimension, chars, final_char)) < 0) |
| 1049 | return Qnil; |
| 1050 | return CHARSET_SYMBOL (charset); |
| 1051 | } |
| 1052 | |
| 1053 | /* If GENERICP is nonzero, return nonzero iff C is a valid normal or |
| 1054 | generic character. If GENERICP is zero, return nonzero iff C is a |
| 1055 | valid normal character. Do not call this function directly, |
| 1056 | instead use macro CHAR_VALID_P. */ |
| 1057 | int |
| 1058 | char_valid_p (c, genericp) |
| 1059 | int c, genericp; |
| 1060 | { |
| 1061 | int charset, c1, c2; |
| 1062 | |
| 1063 | if (c < 0) |
| 1064 | return 0; |
| 1065 | if (SINGLE_BYTE_CHAR_P (c)) |
| 1066 | return 1; |
| 1067 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); |
| 1068 | if (charset != CHARSET_COMPOSITION && !CHARSET_DEFINED_P (charset)) |
| 1069 | return 0; |
| 1070 | return (c < MIN_CHAR_COMPOSITION |
| 1071 | ? ((c & CHAR_FIELD1_MASK) /* i.e. dimension of C is two. */ |
| 1072 | ? (genericp && c1 == 0 && c2 == 0 |
| 1073 | || c1 >= 32 && c2 >= 32) |
| 1074 | : (genericp && c1 == 0 |
| 1075 | || c1 >= 32)) |
| 1076 | : c < MIN_CHAR_COMPOSITION + n_cmpchars); |
| 1077 | } |
| 1078 | |
| 1079 | DEFUN ("char-valid-p", Fchar_valid_p, Schar_valid_p, 1, 2, 0, |
| 1080 | "Return t if OBJECT is a valid normal character.\n\ |
| 1081 | If optional arg GENERICP is non-nil, also return t if OBJECT is\n\ |
| 1082 | a valid generic character.") |
| 1083 | (object, genericp) |
| 1084 | Lisp_Object object, genericp; |
| 1085 | { |
| 1086 | if (! NATNUMP (object)) |
| 1087 | return Qnil; |
| 1088 | return (CHAR_VALID_P (XFASTINT (object), !NILP (genericp)) ? Qt : Qnil); |
| 1089 | } |
| 1090 | |
| 1091 | DEFUN ("unibyte-char-to-multibyte", Funibyte_char_to_multibyte, |
| 1092 | Sunibyte_char_to_multibyte, 1, 1, 0, |
| 1093 | "Convert the unibyte character CH to multibyte character.\n\ |
| 1094 | The conversion is done based on `nonascii-translation-table' (which see)\n\ |
| 1095 | or `nonascii-insert-offset' (which see).") |
| 1096 | (ch) |
| 1097 | Lisp_Object ch; |
| 1098 | { |
| 1099 | int c; |
| 1100 | |
| 1101 | CHECK_NUMBER (ch, 0); |
| 1102 | c = XINT (ch); |
| 1103 | if (c < 0 || c >= 0400) |
| 1104 | error ("Invalid unibyte character: %d", c); |
| 1105 | c = unibyte_char_to_multibyte (c); |
| 1106 | if (c < 0) |
| 1107 | error ("Can't convert to multibyte character: %d", XINT (ch)); |
| 1108 | return make_number (c); |
| 1109 | } |
| 1110 | |
| 1111 | DEFUN ("multibyte-char-to-unibyte", Fmultibyte_char_to_unibyte, |
| 1112 | Smultibyte_char_to_unibyte, 1, 1, 0, |
| 1113 | "Convert the multibyte character CH to unibyte character.\n\ |
| 1114 | The conversion is done based on `nonascii-translation-table' (which see)\n\ |
| 1115 | or `nonascii-insert-offset' (which see).") |
| 1116 | (ch) |
| 1117 | Lisp_Object ch; |
| 1118 | { |
| 1119 | int c; |
| 1120 | |
| 1121 | CHECK_NUMBER (ch, 0); |
| 1122 | c = XINT (ch); |
| 1123 | if (c < 0) |
| 1124 | error ("Invalid multibyte character: %d", c); |
| 1125 | c = multibyte_char_to_unibyte (c, Qnil); |
| 1126 | if (c < 0) |
| 1127 | error ("Can't convert to unibyte character: %d", XINT (ch)); |
| 1128 | return make_number (c); |
| 1129 | } |
| 1130 | |
| 1131 | DEFUN ("char-bytes", Fchar_bytes, Schar_bytes, 1, 1, 0, |
| 1132 | "Return 1 regardless of the argument CHAR.\n\ |
| 1133 | This is now an obsolete function. We keep it just for backward compatibility.") |
| 1134 | (ch) |
| 1135 | Lisp_Object ch; |
| 1136 | { |
| 1137 | Lisp_Object val; |
| 1138 | |
| 1139 | CHECK_NUMBER (ch, 0); |
| 1140 | return make_number (1); |
| 1141 | } |
| 1142 | |
| 1143 | /* Return how many bytes C will occupy in a multibyte buffer. |
| 1144 | Don't call this function directly, instead use macro CHAR_BYTES. */ |
| 1145 | int |
| 1146 | char_bytes (c) |
| 1147 | int c; |
| 1148 | { |
| 1149 | int bytes; |
| 1150 | |
| 1151 | if (SINGLE_BYTE_CHAR_P (c) || (c & ~GLYPH_MASK_CHAR)) |
| 1152 | return 1; |
| 1153 | |
| 1154 | if (COMPOSITE_CHAR_P (c)) |
| 1155 | { |
| 1156 | unsigned int id = COMPOSITE_CHAR_ID (c); |
| 1157 | |
| 1158 | bytes = (id < n_cmpchars ? cmpchar_table[id]->len : 1); |
| 1159 | } |
| 1160 | else |
| 1161 | { |
| 1162 | int charset = CHAR_CHARSET (c); |
| 1163 | |
| 1164 | bytes = CHARSET_DEFINED_P (charset) ? CHARSET_BYTES (charset) : 1; |
| 1165 | } |
| 1166 | |
| 1167 | return bytes; |
| 1168 | } |
| 1169 | |
| 1170 | /* Return the width of character of which multi-byte form starts with |
| 1171 | C. The width is measured by how many columns occupied on the |
| 1172 | screen when displayed in the current buffer. */ |
| 1173 | |
| 1174 | #define ONE_BYTE_CHAR_WIDTH(c) \ |
| 1175 | (c < 0x20 \ |
| 1176 | ? (c == '\t' \ |
| 1177 | ? XFASTINT (current_buffer->tab_width) \ |
| 1178 | : (c == '\n' ? 0 : (NILP (current_buffer->ctl_arrow) ? 4 : 2))) \ |
| 1179 | : (c < 0x7f \ |
| 1180 | ? 1 \ |
| 1181 | : (c == 0x7F \ |
| 1182 | ? (NILP (current_buffer->ctl_arrow) ? 4 : 2) \ |
| 1183 | : ((! NILP (current_buffer->enable_multibyte_characters) \ |
| 1184 | && BASE_LEADING_CODE_P (c)) \ |
| 1185 | ? WIDTH_BY_CHAR_HEAD (c) \ |
| 1186 | : 4)))) |
| 1187 | |
| 1188 | DEFUN ("char-width", Fchar_width, Schar_width, 1, 1, 0, |
| 1189 | "Return width of CHAR when displayed in the current buffer.\n\ |
| 1190 | The width is measured by how many columns it occupies on the screen.") |
| 1191 | (ch) |
| 1192 | Lisp_Object ch; |
| 1193 | { |
| 1194 | Lisp_Object val, disp; |
| 1195 | int c; |
| 1196 | struct Lisp_Char_Table *dp = buffer_display_table (); |
| 1197 | |
| 1198 | CHECK_NUMBER (ch, 0); |
| 1199 | |
| 1200 | c = XINT (ch); |
| 1201 | |
| 1202 | /* Get the way the display table would display it. */ |
| 1203 | disp = dp ? DISP_CHAR_VECTOR (dp, c) : Qnil; |
| 1204 | |
| 1205 | if (VECTORP (disp)) |
| 1206 | XSETINT (val, XVECTOR (disp)->size); |
| 1207 | else if (SINGLE_BYTE_CHAR_P (c)) |
| 1208 | XSETINT (val, ONE_BYTE_CHAR_WIDTH (c)); |
| 1209 | else if (COMPOSITE_CHAR_P (c)) |
| 1210 | { |
| 1211 | int id = COMPOSITE_CHAR_ID (XFASTINT (ch)); |
| 1212 | XSETFASTINT (val, (id < n_cmpchars ? cmpchar_table[id]->width : 1)); |
| 1213 | } |
| 1214 | else |
| 1215 | { |
| 1216 | int charset = CHAR_CHARSET (c); |
| 1217 | |
| 1218 | XSETFASTINT (val, CHARSET_WIDTH (charset)); |
| 1219 | } |
| 1220 | return val; |
| 1221 | } |
| 1222 | |
| 1223 | /* Return width of string STR of length LEN when displayed in the |
| 1224 | current buffer. The width is measured by how many columns it |
| 1225 | occupies on the screen. */ |
| 1226 | |
| 1227 | int |
| 1228 | strwidth (str, len) |
| 1229 | unsigned char *str; |
| 1230 | int len; |
| 1231 | { |
| 1232 | unsigned char *endp = str + len; |
| 1233 | int width = 0; |
| 1234 | struct Lisp_Char_Table *dp = buffer_display_table (); |
| 1235 | |
| 1236 | while (str < endp) |
| 1237 | { |
| 1238 | if (*str == LEADING_CODE_COMPOSITION) |
| 1239 | { |
| 1240 | int id = str_cmpchar_id (str, endp - str); |
| 1241 | |
| 1242 | if (id < 0) |
| 1243 | { |
| 1244 | width += 4; |
| 1245 | str++; |
| 1246 | } |
| 1247 | else |
| 1248 | { |
| 1249 | width += cmpchar_table[id]->width; |
| 1250 | str += cmpchar_table[id]->len; |
| 1251 | } |
| 1252 | } |
| 1253 | else |
| 1254 | { |
| 1255 | Lisp_Object disp; |
| 1256 | int thislen; |
| 1257 | int c = STRING_CHAR_AND_LENGTH (str, endp - str, thislen); |
| 1258 | |
| 1259 | /* Get the way the display table would display it. */ |
| 1260 | if (dp) |
| 1261 | disp = DISP_CHAR_VECTOR (dp, c); |
| 1262 | else |
| 1263 | disp = Qnil; |
| 1264 | |
| 1265 | if (VECTORP (disp)) |
| 1266 | width += XVECTOR (disp)->size; |
| 1267 | else |
| 1268 | width += ONE_BYTE_CHAR_WIDTH (*str); |
| 1269 | |
| 1270 | str += thislen; |
| 1271 | } |
| 1272 | } |
| 1273 | return width; |
| 1274 | } |
| 1275 | |
| 1276 | DEFUN ("string-width", Fstring_width, Sstring_width, 1, 1, 0, |
| 1277 | "Return width of STRING when displayed in the current buffer.\n\ |
| 1278 | Width is measured by how many columns it occupies on the screen.\n\ |
| 1279 | When calculating width of a multibyte character in STRING,\n\ |
| 1280 | only the base leading-code is considered; the validity of\n\ |
| 1281 | the following bytes is not checked.") |
| 1282 | (str) |
| 1283 | Lisp_Object str; |
| 1284 | { |
| 1285 | Lisp_Object val; |
| 1286 | |
| 1287 | CHECK_STRING (str, 0); |
| 1288 | XSETFASTINT (val, strwidth (XSTRING (str)->data, |
| 1289 | STRING_BYTES (XSTRING (str)))); |
| 1290 | return val; |
| 1291 | } |
| 1292 | |
| 1293 | DEFUN ("char-direction", Fchar_direction, Schar_direction, 1, 1, 0, |
| 1294 | "Return the direction of CHAR.\n\ |
| 1295 | The returned value is 0 for left-to-right and 1 for right-to-left.") |
| 1296 | (ch) |
| 1297 | Lisp_Object ch; |
| 1298 | { |
| 1299 | int charset; |
| 1300 | |
| 1301 | CHECK_NUMBER (ch, 0); |
| 1302 | charset = CHAR_CHARSET (XFASTINT (ch)); |
| 1303 | if (!CHARSET_DEFINED_P (charset)) |
| 1304 | invalid_character (XINT (ch)); |
| 1305 | return CHARSET_TABLE_INFO (charset, CHARSET_DIRECTION_IDX); |
| 1306 | } |
| 1307 | |
| 1308 | DEFUN ("chars-in-region", Fchars_in_region, Schars_in_region, 2, 2, 0, |
| 1309 | "Return number of characters between BEG and END.") |
| 1310 | (beg, end) |
| 1311 | Lisp_Object beg, end; |
| 1312 | { |
| 1313 | int from, to; |
| 1314 | |
| 1315 | CHECK_NUMBER_COERCE_MARKER (beg, 0); |
| 1316 | CHECK_NUMBER_COERCE_MARKER (end, 1); |
| 1317 | |
| 1318 | from = min (XFASTINT (beg), XFASTINT (end)); |
| 1319 | to = max (XFASTINT (beg), XFASTINT (end)); |
| 1320 | |
| 1321 | return make_number (to - from); |
| 1322 | } |
| 1323 | |
| 1324 | /* Return the number of characters in the NBYTES bytes at PTR. |
| 1325 | This works by looking at the contents and checking for multibyte sequences. |
| 1326 | However, if the current buffer has enable-multibyte-characters = nil, |
| 1327 | we treat each byte as a character. */ |
| 1328 | |
| 1329 | int |
| 1330 | chars_in_text (ptr, nbytes) |
| 1331 | unsigned char *ptr; |
| 1332 | int nbytes; |
| 1333 | { |
| 1334 | unsigned char *endp, c; |
| 1335 | int chars; |
| 1336 | |
| 1337 | /* current_buffer is null at early stages of Emacs initialization. */ |
| 1338 | if (current_buffer == 0 |
| 1339 | || NILP (current_buffer->enable_multibyte_characters)) |
| 1340 | return nbytes; |
| 1341 | |
| 1342 | endp = ptr + nbytes; |
| 1343 | chars = 0; |
| 1344 | |
| 1345 | while (ptr < endp) |
| 1346 | { |
| 1347 | c = *ptr++; |
| 1348 | |
| 1349 | if (BASE_LEADING_CODE_P (c)) |
| 1350 | while (ptr < endp && ! CHAR_HEAD_P (*ptr)) ptr++; |
| 1351 | chars++; |
| 1352 | } |
| 1353 | |
| 1354 | return chars; |
| 1355 | } |
| 1356 | |
| 1357 | /* Return the number of characters in the NBYTES bytes at PTR. |
| 1358 | This works by looking at the contents and checking for multibyte sequences. |
| 1359 | It ignores enable-multibyte-characters. */ |
| 1360 | |
| 1361 | int |
| 1362 | multibyte_chars_in_text (ptr, nbytes) |
| 1363 | unsigned char *ptr; |
| 1364 | int nbytes; |
| 1365 | { |
| 1366 | unsigned char *endp, c; |
| 1367 | int chars; |
| 1368 | |
| 1369 | endp = ptr + nbytes; |
| 1370 | chars = 0; |
| 1371 | |
| 1372 | while (ptr < endp) |
| 1373 | { |
| 1374 | c = *ptr++; |
| 1375 | |
| 1376 | if (BASE_LEADING_CODE_P (c)) |
| 1377 | while (ptr < endp && ! CHAR_HEAD_P (*ptr)) ptr++; |
| 1378 | chars++; |
| 1379 | } |
| 1380 | |
| 1381 | return chars; |
| 1382 | } |
| 1383 | |
| 1384 | DEFUN ("string", Fstring, Sstring, 1, MANY, 0, |
| 1385 | "Concatenate all the argument characters and make the result a string.") |
| 1386 | (n, args) |
| 1387 | int n; |
| 1388 | Lisp_Object *args; |
| 1389 | { |
| 1390 | int i; |
| 1391 | unsigned char *buf |
| 1392 | = (unsigned char *) alloca (MAX_LENGTH_OF_MULTI_BYTE_FORM * n); |
| 1393 | unsigned char *p = buf; |
| 1394 | Lisp_Object val; |
| 1395 | |
| 1396 | for (i = 0; i < n; i++) |
| 1397 | { |
| 1398 | int c, len; |
| 1399 | unsigned char *str; |
| 1400 | |
| 1401 | if (!INTEGERP (args[i])) |
| 1402 | CHECK_NUMBER (args[i], 0); |
| 1403 | c = XINT (args[i]); |
| 1404 | len = CHAR_STRING (c, p, str); |
| 1405 | if (p != str) |
| 1406 | /* C is a composite character. */ |
| 1407 | bcopy (str, p, len); |
| 1408 | p += len; |
| 1409 | } |
| 1410 | |
| 1411 | /* Here, we can't use make_string_from_bytes because of byte |
| 1412 | combining problem. */ |
| 1413 | val = make_string (buf, p - buf); |
| 1414 | return val; |
| 1415 | } |
| 1416 | |
| 1417 | #endif /* emacs */ |
| 1418 | \f |
| 1419 | /*** Composite characters staffs ***/ |
| 1420 | |
| 1421 | /* Each composite character is identified by CMPCHAR-ID which is |
| 1422 | assigned when Emacs needs the character code of the composite |
| 1423 | character (e.g. when displaying it on the screen). See the |
| 1424 | document "GENERAL NOTE on COMPOSITE CHARACTER" in `charset.h' how a |
| 1425 | composite character is represented in Emacs. */ |
| 1426 | |
| 1427 | /* If `static' is defined, it means that it is defined to null string. */ |
| 1428 | #ifndef static |
| 1429 | /* The following function is copied from lread.c. */ |
| 1430 | static int |
| 1431 | hash_string (ptr, len) |
| 1432 | unsigned char *ptr; |
| 1433 | int len; |
| 1434 | { |
| 1435 | register unsigned char *p = ptr; |
| 1436 | register unsigned char *end = p + len; |
| 1437 | register unsigned char c; |
| 1438 | register int hash = 0; |
| 1439 | |
| 1440 | while (p != end) |
| 1441 | { |
| 1442 | c = *p++; |
| 1443 | if (c >= 0140) c -= 40; |
| 1444 | hash = ((hash<<3) + (hash>>28) + c); |
| 1445 | } |
| 1446 | return hash & 07777777777; |
| 1447 | } |
| 1448 | #endif |
| 1449 | |
| 1450 | #define CMPCHAR_HASH_TABLE_SIZE 0xFFF |
| 1451 | |
| 1452 | static int *cmpchar_hash_table[CMPCHAR_HASH_TABLE_SIZE]; |
| 1453 | |
| 1454 | /* Each element of `cmpchar_hash_table' is a pointer to an array of |
| 1455 | integer, where the 1st element is the size of the array, the 2nd |
| 1456 | element is how many elements are actually used in the array, and |
| 1457 | the remaining elements are CMPCHAR-IDs of composite characters of |
| 1458 | the same hash value. */ |
| 1459 | #define CMPCHAR_HASH_SIZE(table) table[0] |
| 1460 | #define CMPCHAR_HASH_USED(table) table[1] |
| 1461 | #define CMPCHAR_HASH_CMPCHAR_ID(table, i) table[i] |
| 1462 | |
| 1463 | /* Return CMPCHAR-ID of the composite character in STR of the length |
| 1464 | LEN. If the composite character has not yet been registered, |
| 1465 | register it in `cmpchar_table' and assign new CMPCHAR-ID. This |
| 1466 | is the sole function for assigning CMPCHAR-ID. */ |
| 1467 | int |
| 1468 | str_cmpchar_id (str, len) |
| 1469 | const unsigned char *str; |
| 1470 | int len; |
| 1471 | { |
| 1472 | int hash_idx, *hashp; |
| 1473 | unsigned char *buf; |
| 1474 | int embedded_rule; /* 1 if composition rule is embedded. */ |
| 1475 | int chars; /* number of components. */ |
| 1476 | int i; |
| 1477 | struct cmpchar_info *cmpcharp; |
| 1478 | |
| 1479 | /* The second byte 0xFF means compostion rule is embedded. */ |
| 1480 | embedded_rule = (str[1] == 0xFF); |
| 1481 | |
| 1482 | /* At first, get the actual length of the composite character. */ |
| 1483 | { |
| 1484 | const unsigned char *p, *endp = str + 1, *lastp = str + len; |
| 1485 | int bytes; |
| 1486 | |
| 1487 | while (endp < lastp && ! CHAR_HEAD_P (*endp)) endp++; |
| 1488 | if (endp - str < 5) |
| 1489 | /* Any composite char have at least 5-byte length. */ |
| 1490 | return -1; |
| 1491 | |
| 1492 | chars = 0; |
| 1493 | p = str + 1; |
| 1494 | while (p < endp) |
| 1495 | { |
| 1496 | if (embedded_rule) |
| 1497 | { |
| 1498 | p++; |
| 1499 | if (p >= endp) |
| 1500 | return -1; |
| 1501 | } |
| 1502 | /* No need of checking if *P is 0xA0 because |
| 1503 | BYTES_BY_CHAR_HEAD (0x80) surely returns 2. */ |
| 1504 | p += BYTES_BY_CHAR_HEAD (*p - 0x20); |
| 1505 | chars++; |
| 1506 | } |
| 1507 | if (p > endp || chars < 2 || chars > MAX_COMPONENT_COUNT) |
| 1508 | /* Invalid components. */ |
| 1509 | return -1; |
| 1510 | len = p - str; |
| 1511 | } |
| 1512 | hash_idx = hash_string (str, len) % CMPCHAR_HASH_TABLE_SIZE; |
| 1513 | hashp = cmpchar_hash_table[hash_idx]; |
| 1514 | |
| 1515 | /* Then, look into the hash table. */ |
| 1516 | if (hashp != NULL) |
| 1517 | /* Find the correct one among composite characters of the same |
| 1518 | hash value. */ |
| 1519 | for (i = 2; i < CMPCHAR_HASH_USED (hashp); i++) |
| 1520 | { |
| 1521 | cmpcharp = cmpchar_table[CMPCHAR_HASH_CMPCHAR_ID (hashp, i)]; |
| 1522 | if (len == cmpcharp->len |
| 1523 | && ! bcmp (str, cmpcharp->data, len)) |
| 1524 | return CMPCHAR_HASH_CMPCHAR_ID (hashp, i); |
| 1525 | } |
| 1526 | |
| 1527 | /* We have to register the composite character in cmpchar_table. */ |
| 1528 | if (n_cmpchars >= (CHAR_FIELD2_MASK | CHAR_FIELD3_MASK)) |
| 1529 | /* No, we have no more room for a new composite character. */ |
| 1530 | return -1; |
| 1531 | |
| 1532 | /* Make the entry in hash table. */ |
| 1533 | if (hashp == NULL) |
| 1534 | { |
| 1535 | /* Make a table for 8 composite characters initially. */ |
| 1536 | hashp = (cmpchar_hash_table[hash_idx] |
| 1537 | = (int *) xmalloc (sizeof (int) * (2 + 8))); |
| 1538 | CMPCHAR_HASH_SIZE (hashp) = 10; |
| 1539 | CMPCHAR_HASH_USED (hashp) = 2; |
| 1540 | } |
| 1541 | else if (CMPCHAR_HASH_USED (hashp) >= CMPCHAR_HASH_SIZE (hashp)) |
| 1542 | { |
| 1543 | CMPCHAR_HASH_SIZE (hashp) += 8; |
| 1544 | hashp = (cmpchar_hash_table[hash_idx] |
| 1545 | = (int *) xrealloc (hashp, |
| 1546 | sizeof (int) * CMPCHAR_HASH_SIZE (hashp))); |
| 1547 | } |
| 1548 | CMPCHAR_HASH_CMPCHAR_ID (hashp, CMPCHAR_HASH_USED (hashp)) = n_cmpchars; |
| 1549 | CMPCHAR_HASH_USED (hashp)++; |
| 1550 | |
| 1551 | /* Set information of the composite character in cmpchar_table. */ |
| 1552 | if (cmpchar_table_size == 0) |
| 1553 | { |
| 1554 | /* This is the first composite character to be registered. */ |
| 1555 | cmpchar_table_size = 256; |
| 1556 | cmpchar_table |
| 1557 | = (struct cmpchar_info **) xmalloc (sizeof (cmpchar_table[0]) |
| 1558 | * cmpchar_table_size); |
| 1559 | } |
| 1560 | else if (cmpchar_table_size <= n_cmpchars) |
| 1561 | { |
| 1562 | cmpchar_table_size += 256; |
| 1563 | cmpchar_table |
| 1564 | = (struct cmpchar_info **) xrealloc (cmpchar_table, |
| 1565 | sizeof (cmpchar_table[0]) |
| 1566 | * cmpchar_table_size); |
| 1567 | } |
| 1568 | |
| 1569 | cmpcharp = (struct cmpchar_info *) xmalloc (sizeof (struct cmpchar_info)); |
| 1570 | |
| 1571 | cmpcharp->len = len; |
| 1572 | cmpcharp->data = (unsigned char *) xmalloc (len + 1); |
| 1573 | bcopy (str, cmpcharp->data, len); |
| 1574 | cmpcharp->data[len] = 0; |
| 1575 | cmpcharp->glyph_len = chars; |
| 1576 | cmpcharp->glyph = (GLYPH *) xmalloc (sizeof (GLYPH) * chars); |
| 1577 | if (embedded_rule) |
| 1578 | { |
| 1579 | cmpcharp->cmp_rule = (unsigned char *) xmalloc (chars); |
| 1580 | cmpcharp->col_offset = (float *) xmalloc (sizeof (float) * chars); |
| 1581 | } |
| 1582 | else |
| 1583 | { |
| 1584 | cmpcharp->cmp_rule = NULL; |
| 1585 | cmpcharp->col_offset = NULL; |
| 1586 | } |
| 1587 | |
| 1588 | /* Setup GLYPH data and composition rules (if any) so as not to make |
| 1589 | them every time on displaying. */ |
| 1590 | { |
| 1591 | unsigned char *bufp; |
| 1592 | int width; |
| 1593 | float leftmost = 0.0, rightmost = 1.0; |
| 1594 | |
| 1595 | if (embedded_rule) |
| 1596 | /* At first, col_offset[N] is set to relative to col_offset[0]. */ |
| 1597 | cmpcharp->col_offset[0] = 0; |
| 1598 | |
| 1599 | for (i = 0, bufp = cmpcharp->data + 1; i < chars; i++) |
| 1600 | { |
| 1601 | if (embedded_rule) |
| 1602 | cmpcharp->cmp_rule[i] = *bufp++; |
| 1603 | |
| 1604 | if (*bufp == 0xA0) /* This is an ASCII character. */ |
| 1605 | { |
| 1606 | cmpcharp->glyph[i] = FAST_MAKE_GLYPH ((*++bufp & 0x7F), 0); |
| 1607 | width = 1; |
| 1608 | bufp++; |
| 1609 | } |
| 1610 | else /* Multibyte character. */ |
| 1611 | { |
| 1612 | /* Make `bufp' point normal multi-byte form temporally. */ |
| 1613 | *bufp -= 0x20; |
| 1614 | cmpcharp->glyph[i] |
| 1615 | = FAST_MAKE_GLYPH (string_to_non_ascii_char (bufp, 4, 0, 0), 0); |
| 1616 | width = WIDTH_BY_CHAR_HEAD (*bufp); |
| 1617 | *bufp += 0x20; |
| 1618 | bufp += BYTES_BY_CHAR_HEAD (*bufp - 0x20); |
| 1619 | } |
| 1620 | |
| 1621 | if (embedded_rule && i > 0) |
| 1622 | { |
| 1623 | /* Reference points (global_ref and new_ref) are |
| 1624 | encoded as below: |
| 1625 | |
| 1626 | 0--1--2 -- ascent |
| 1627 | | | |
| 1628 | | | |
| 1629 | | 4 -+--- center |
| 1630 | -- 3 5 -- baseline |
| 1631 | | | |
| 1632 | 6--7--8 -- descent |
| 1633 | |
| 1634 | Now, we calculate the column offset of the new glyph |
| 1635 | from the left edge of the first glyph. This can avoid |
| 1636 | the same calculation everytime displaying this |
| 1637 | composite character. */ |
| 1638 | |
| 1639 | /* Reference points of global glyph and new glyph. */ |
| 1640 | int global_ref = (cmpcharp->cmp_rule[i] - 0xA0) / 9; |
| 1641 | int new_ref = (cmpcharp->cmp_rule[i] - 0xA0) % 9; |
| 1642 | /* Column offset relative to the first glyph. */ |
| 1643 | float left = (leftmost |
| 1644 | + (global_ref % 3) * (rightmost - leftmost) / 2.0 |
| 1645 | - (new_ref % 3) * width / 2.0); |
| 1646 | |
| 1647 | cmpcharp->col_offset[i] = left; |
| 1648 | if (left < leftmost) |
| 1649 | leftmost = left; |
| 1650 | if (left + width > rightmost) |
| 1651 | rightmost = left + width; |
| 1652 | } |
| 1653 | else |
| 1654 | { |
| 1655 | if (width > rightmost) |
| 1656 | rightmost = width; |
| 1657 | } |
| 1658 | } |
| 1659 | if (embedded_rule) |
| 1660 | { |
| 1661 | /* Now col_offset[N] are relative to the left edge of the |
| 1662 | first component. Make them relative to the left edge of |
| 1663 | overall glyph. */ |
| 1664 | for (i = 0; i < chars; i++) |
| 1665 | cmpcharp->col_offset[i] -= leftmost; |
| 1666 | /* Make rightmost holds width of overall glyph. */ |
| 1667 | rightmost -= leftmost; |
| 1668 | } |
| 1669 | |
| 1670 | cmpcharp->width = rightmost; |
| 1671 | if (cmpcharp->width < rightmost) |
| 1672 | /* To get a ceiling integer value. */ |
| 1673 | cmpcharp->width++; |
| 1674 | } |
| 1675 | |
| 1676 | cmpchar_table[n_cmpchars] = cmpcharp; |
| 1677 | |
| 1678 | return n_cmpchars++; |
| 1679 | } |
| 1680 | |
| 1681 | /* Return the Nth element of the composite character C. If NOERROR is |
| 1682 | nonzero, return 0 on error condition (C is an invalid composite |
| 1683 | charcter, or N is out of range). */ |
| 1684 | int |
| 1685 | cmpchar_component (c, n, noerror) |
| 1686 | int c, n, noerror; |
| 1687 | { |
| 1688 | int id = COMPOSITE_CHAR_ID (c); |
| 1689 | |
| 1690 | if (id < 0 || id >= n_cmpchars) |
| 1691 | { |
| 1692 | /* C is not a valid composite character. */ |
| 1693 | if (noerror) return 0; |
| 1694 | error ("Invalid composite character: %d", c) ; |
| 1695 | } |
| 1696 | if (n >= cmpchar_table[id]->glyph_len) |
| 1697 | { |
| 1698 | /* No such component. */ |
| 1699 | if (noerror) return 0; |
| 1700 | args_out_of_range (make_number (c), make_number (n)); |
| 1701 | } |
| 1702 | /* No face data is stored in glyph code. */ |
| 1703 | return ((int) (cmpchar_table[id]->glyph[n])); |
| 1704 | } |
| 1705 | |
| 1706 | DEFUN ("cmpcharp", Fcmpcharp, Scmpcharp, 1, 1, 0, |
| 1707 | "T if CHAR is a composite character.") |
| 1708 | (ch) |
| 1709 | Lisp_Object ch; |
| 1710 | { |
| 1711 | CHECK_NUMBER (ch, 0); |
| 1712 | return (COMPOSITE_CHAR_P (XINT (ch)) ? Qt : Qnil); |
| 1713 | } |
| 1714 | |
| 1715 | DEFUN ("composite-char-component", Fcmpchar_component, Scmpchar_component, |
| 1716 | 2, 2, 0, |
| 1717 | "Return the Nth component character of composite character CHARACTER.") |
| 1718 | (character, n) |
| 1719 | Lisp_Object character, n; |
| 1720 | { |
| 1721 | int id; |
| 1722 | |
| 1723 | CHECK_NUMBER (character, 0); |
| 1724 | CHECK_NUMBER (n, 1); |
| 1725 | |
| 1726 | return (make_number (cmpchar_component (XINT (character), XINT (n), 0))); |
| 1727 | } |
| 1728 | |
| 1729 | DEFUN ("composite-char-composition-rule", Fcmpchar_cmp_rule, Scmpchar_cmp_rule, |
| 1730 | 2, 2, 0, |
| 1731 | "Return the Nth composition rule of composite character CHARACTER.\n\ |
| 1732 | The returned rule is for composing the Nth component\n\ |
| 1733 | on the (N-1)th component.\n\ |
| 1734 | If CHARACTER should be composed relatively or N is 0, return 255.") |
| 1735 | (character, n) |
| 1736 | Lisp_Object character, n; |
| 1737 | { |
| 1738 | int id; |
| 1739 | |
| 1740 | CHECK_NUMBER (character, 0); |
| 1741 | CHECK_NUMBER (n, 1); |
| 1742 | |
| 1743 | id = COMPOSITE_CHAR_ID (XINT (character)); |
| 1744 | if (id < 0 || id >= n_cmpchars) |
| 1745 | error ("Invalid composite character: %d", XINT (character)); |
| 1746 | if (XINT (n) < 0 || XINT (n) >= cmpchar_table[id]->glyph_len) |
| 1747 | args_out_of_range (character, n); |
| 1748 | |
| 1749 | return make_number (cmpchar_table[id]->cmp_rule |
| 1750 | ? cmpchar_table[id]->cmp_rule[XINT (n)] |
| 1751 | : 255); |
| 1752 | } |
| 1753 | |
| 1754 | DEFUN ("composite-char-composition-rule-p", Fcmpchar_cmp_rule_p, |
| 1755 | Scmpchar_cmp_rule_p, 1, 1, 0, |
| 1756 | "Return non-nil if composite character CHARACTER contains a embedded rule.") |
| 1757 | (character) |
| 1758 | Lisp_Object character; |
| 1759 | { |
| 1760 | int id; |
| 1761 | |
| 1762 | CHECK_NUMBER (character, 0); |
| 1763 | id = COMPOSITE_CHAR_ID (XINT (character)); |
| 1764 | if (id < 0 || id >= n_cmpchars) |
| 1765 | error ("Invalid composite character: %d", XINT (character)); |
| 1766 | |
| 1767 | return (cmpchar_table[id]->cmp_rule ? Qt : Qnil); |
| 1768 | } |
| 1769 | |
| 1770 | DEFUN ("composite-char-component-count", Fcmpchar_cmp_count, |
| 1771 | Scmpchar_cmp_count, 1, 1, 0, |
| 1772 | "Return number of compoents of composite character CHARACTER.") |
| 1773 | (character) |
| 1774 | Lisp_Object character; |
| 1775 | { |
| 1776 | int id; |
| 1777 | |
| 1778 | CHECK_NUMBER (character, 0); |
| 1779 | id = COMPOSITE_CHAR_ID (XINT (character)); |
| 1780 | if (id < 0 || id >= n_cmpchars) |
| 1781 | error ("Invalid composite character: %d", XINT (character)); |
| 1782 | |
| 1783 | return (make_number (cmpchar_table[id]->glyph_len)); |
| 1784 | } |
| 1785 | |
| 1786 | DEFUN ("compose-string", Fcompose_string, Scompose_string, |
| 1787 | 1, 1, 0, |
| 1788 | "Return one char string composed from all characters in STRING.") |
| 1789 | (str) |
| 1790 | Lisp_Object str; |
| 1791 | { |
| 1792 | unsigned char buf[MAX_LENGTH_OF_MULTI_BYTE_FORM], *p, *pend, *ptemp; |
| 1793 | int len, i; |
| 1794 | |
| 1795 | CHECK_STRING (str, 0); |
| 1796 | |
| 1797 | buf[0] = LEADING_CODE_COMPOSITION; |
| 1798 | p = XSTRING (str)->data; |
| 1799 | pend = p + STRING_BYTES (XSTRING (str)); |
| 1800 | i = 1; |
| 1801 | while (p < pend) |
| 1802 | { |
| 1803 | if (*p < 0x20) /* control code */ |
| 1804 | error ("Invalid component character: %d", *p); |
| 1805 | else if (*p < 0x80) /* ASCII */ |
| 1806 | { |
| 1807 | if (i + 2 >= MAX_LENGTH_OF_MULTI_BYTE_FORM) |
| 1808 | error ("Too long string to be composed: %s", XSTRING (str)->data); |
| 1809 | /* Prepend an ASCII charset indicator 0xA0, set MSB of the |
| 1810 | code itself. */ |
| 1811 | buf[i++] = 0xA0; |
| 1812 | buf[i++] = *p++ + 0x80; |
| 1813 | } |
| 1814 | else if (*p == LEADING_CODE_COMPOSITION) /* composite char */ |
| 1815 | { |
| 1816 | /* Already composed. Eliminate the heading |
| 1817 | LEADING_CODE_COMPOSITION, keep the remaining bytes |
| 1818 | unchanged. */ |
| 1819 | p++; |
| 1820 | if (*p == 255) |
| 1821 | error ("Can't compose a rule-based composition character"); |
| 1822 | ptemp = p; |
| 1823 | while (! CHAR_HEAD_P (*p)) p++; |
| 1824 | if (str_cmpchar_id (ptemp - 1, p - ptemp + 1) < 0) |
| 1825 | error ("Can't compose an invalid composition character"); |
| 1826 | if (i + (p - ptemp) >= MAX_LENGTH_OF_MULTI_BYTE_FORM) |
| 1827 | error ("Too long string to be composed: %s", XSTRING (str)->data); |
| 1828 | bcopy (ptemp, buf + i, p - ptemp); |
| 1829 | i += p - ptemp; |
| 1830 | } |
| 1831 | else /* multibyte char */ |
| 1832 | { |
| 1833 | /* Add 0x20 to the base leading-code, keep the remaining |
| 1834 | bytes unchanged. */ |
| 1835 | int c = STRING_CHAR_AND_CHAR_LENGTH (p, pend - p, len); |
| 1836 | |
| 1837 | if (len <= 1 || ! CHAR_VALID_P (c, 0)) |
| 1838 | error ("Can't compose an invalid character"); |
| 1839 | if (i + len >= MAX_LENGTH_OF_MULTI_BYTE_FORM) |
| 1840 | error ("Too long string to be composed: %s", XSTRING (str)->data); |
| 1841 | bcopy (p, buf + i, len); |
| 1842 | buf[i] += 0x20; |
| 1843 | p += len, i += len; |
| 1844 | } |
| 1845 | } |
| 1846 | |
| 1847 | if (i < 5) |
| 1848 | /* STR contains only one character, which can't be composed. */ |
| 1849 | error ("Too short string to be composed: %s", XSTRING (str)->data); |
| 1850 | |
| 1851 | return make_string_from_bytes (buf, 1, i); |
| 1852 | } |
| 1853 | |
| 1854 | \f |
| 1855 | int |
| 1856 | charset_id_internal (charset_name) |
| 1857 | char *charset_name; |
| 1858 | { |
| 1859 | Lisp_Object val; |
| 1860 | |
| 1861 | val= Fget (intern (charset_name), Qcharset); |
| 1862 | if (!VECTORP (val)) |
| 1863 | error ("Charset %s is not defined", charset_name); |
| 1864 | |
| 1865 | return (XINT (XVECTOR (val)->contents[0])); |
| 1866 | } |
| 1867 | |
| 1868 | DEFUN ("setup-special-charsets", Fsetup_special_charsets, |
| 1869 | Ssetup_special_charsets, 0, 0, 0, "Internal use only.") |
| 1870 | () |
| 1871 | { |
| 1872 | charset_latin_iso8859_1 = charset_id_internal ("latin-iso8859-1"); |
| 1873 | charset_jisx0208_1978 = charset_id_internal ("japanese-jisx0208-1978"); |
| 1874 | charset_jisx0208 = charset_id_internal ("japanese-jisx0208"); |
| 1875 | charset_katakana_jisx0201 = charset_id_internal ("katakana-jisx0201"); |
| 1876 | charset_latin_jisx0201 = charset_id_internal ("latin-jisx0201"); |
| 1877 | charset_big5_1 = charset_id_internal ("chinese-big5-1"); |
| 1878 | charset_big5_2 = charset_id_internal ("chinese-big5-2"); |
| 1879 | return Qnil; |
| 1880 | } |
| 1881 | |
| 1882 | void |
| 1883 | init_charset_once () |
| 1884 | { |
| 1885 | int i, j, k; |
| 1886 | |
| 1887 | staticpro (&Vcharset_table); |
| 1888 | staticpro (&Vcharset_symbol_table); |
| 1889 | staticpro (&Vgeneric_character_list); |
| 1890 | |
| 1891 | /* This has to be done here, before we call Fmake_char_table. */ |
| 1892 | Qcharset_table = intern ("charset-table"); |
| 1893 | staticpro (&Qcharset_table); |
| 1894 | |
| 1895 | /* Intern this now in case it isn't already done. |
| 1896 | Setting this variable twice is harmless. |
| 1897 | But don't staticpro it here--that is done in alloc.c. */ |
| 1898 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); |
| 1899 | |
| 1900 | /* Now we are ready to set up this property, so we can |
| 1901 | create the charset table. */ |
| 1902 | Fput (Qcharset_table, Qchar_table_extra_slots, make_number (0)); |
| 1903 | Vcharset_table = Fmake_char_table (Qcharset_table, Qnil); |
| 1904 | |
| 1905 | Qunknown = intern ("unknown"); |
| 1906 | staticpro (&Qunknown); |
| 1907 | Vcharset_symbol_table = Fmake_vector (make_number (MAX_CHARSET + 1), |
| 1908 | Qunknown); |
| 1909 | |
| 1910 | /* Setup tables. */ |
| 1911 | for (i = 0; i < 2; i++) |
| 1912 | for (j = 0; j < 2; j++) |
| 1913 | for (k = 0; k < 128; k++) |
| 1914 | iso_charset_table [i][j][k] = -1; |
| 1915 | |
| 1916 | bzero (cmpchar_hash_table, sizeof cmpchar_hash_table); |
| 1917 | cmpchar_table_size = n_cmpchars = 0; |
| 1918 | |
| 1919 | for (i = 0; i < 256; i++) |
| 1920 | BYTES_BY_CHAR_HEAD (i) = 1; |
| 1921 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; |
| 1922 | i <= MAX_CHARSET_OFFICIAL_DIMENSION1; i++) |
| 1923 | BYTES_BY_CHAR_HEAD (i) = 2; |
| 1924 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION2; |
| 1925 | i <= MAX_CHARSET_OFFICIAL_DIMENSION2; i++) |
| 1926 | BYTES_BY_CHAR_HEAD (i) = 3; |
| 1927 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 3; |
| 1928 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 3; |
| 1929 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 4; |
| 1930 | BYTES_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 4; |
| 1931 | /* The followings don't reflect the actual bytes, but just to tell |
| 1932 | that it is a start of a multibyte character. */ |
| 1933 | BYTES_BY_CHAR_HEAD (LEADING_CODE_COMPOSITION) = 2; |
| 1934 | BYTES_BY_CHAR_HEAD (0x9E) = 2; |
| 1935 | BYTES_BY_CHAR_HEAD (0x9F) = 2; |
| 1936 | |
| 1937 | for (i = 0; i < 128; i++) |
| 1938 | WIDTH_BY_CHAR_HEAD (i) = 1; |
| 1939 | for (; i < 256; i++) |
| 1940 | WIDTH_BY_CHAR_HEAD (i) = 4; |
| 1941 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_11) = 1; |
| 1942 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_12) = 2; |
| 1943 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_21) = 1; |
| 1944 | WIDTH_BY_CHAR_HEAD (LEADING_CODE_PRIVATE_22) = 2; |
| 1945 | |
| 1946 | { |
| 1947 | Lisp_Object val; |
| 1948 | |
| 1949 | val = Qnil; |
| 1950 | for (i = 0x81; i < 0x90; i++) |
| 1951 | val = Fcons (make_number ((i - 0x70) << 7), val); |
| 1952 | for (; i < 0x9A; i++) |
| 1953 | val = Fcons (make_number ((i - 0x8F) << 14), val); |
| 1954 | for (i = 0xA0; i < 0xF0; i++) |
| 1955 | val = Fcons (make_number ((i - 0x70) << 7), val); |
| 1956 | for (; i < 0xFF; i++) |
| 1957 | val = Fcons (make_number ((i - 0xE0) << 14), val); |
| 1958 | val = Fcons (make_number (GENERIC_COMPOSITION_CHAR), val); |
| 1959 | Vgeneric_character_list = Fnreverse (val); |
| 1960 | } |
| 1961 | |
| 1962 | nonascii_insert_offset = 0; |
| 1963 | Vnonascii_translation_table = Qnil; |
| 1964 | } |
| 1965 | |
| 1966 | #ifdef emacs |
| 1967 | |
| 1968 | void |
| 1969 | syms_of_charset () |
| 1970 | { |
| 1971 | Qascii = intern ("ascii"); |
| 1972 | staticpro (&Qascii); |
| 1973 | |
| 1974 | Qcharset = intern ("charset"); |
| 1975 | staticpro (&Qcharset); |
| 1976 | |
| 1977 | /* Define ASCII charset now. */ |
| 1978 | update_charset_table (make_number (CHARSET_ASCII), |
| 1979 | make_number (1), make_number (94), |
| 1980 | make_number (1), |
| 1981 | make_number (0), |
| 1982 | make_number ('B'), |
| 1983 | make_number (0), |
| 1984 | build_string ("ASCII"), |
| 1985 | build_string ("ASCII"), |
| 1986 | build_string ("ASCII (ISO646 IRV)")); |
| 1987 | CHARSET_SYMBOL (CHARSET_ASCII) = Qascii; |
| 1988 | Fput (Qascii, Qcharset, CHARSET_TABLE_ENTRY (CHARSET_ASCII)); |
| 1989 | |
| 1990 | Qcomposition = intern ("composition"); |
| 1991 | staticpro (&Qcomposition); |
| 1992 | CHARSET_SYMBOL (CHARSET_COMPOSITION) = Qcomposition; |
| 1993 | |
| 1994 | Qauto_fill_chars = intern ("auto-fill-chars"); |
| 1995 | staticpro (&Qauto_fill_chars); |
| 1996 | Fput (Qauto_fill_chars, Qchar_table_extra_slots, make_number (0)); |
| 1997 | |
| 1998 | defsubr (&Sdefine_charset); |
| 1999 | defsubr (&Sgeneric_character_list); |
| 2000 | defsubr (&Sget_unused_iso_final_char); |
| 2001 | defsubr (&Sdeclare_equiv_charset); |
| 2002 | defsubr (&Sfind_charset_region); |
| 2003 | defsubr (&Sfind_charset_string); |
| 2004 | defsubr (&Smake_char_internal); |
| 2005 | defsubr (&Ssplit_char); |
| 2006 | defsubr (&Schar_charset); |
| 2007 | defsubr (&Scharset_after); |
| 2008 | defsubr (&Siso_charset); |
| 2009 | defsubr (&Schar_valid_p); |
| 2010 | defsubr (&Sunibyte_char_to_multibyte); |
| 2011 | defsubr (&Smultibyte_char_to_unibyte); |
| 2012 | defsubr (&Schar_bytes); |
| 2013 | defsubr (&Schar_width); |
| 2014 | defsubr (&Sstring_width); |
| 2015 | defsubr (&Schar_direction); |
| 2016 | defsubr (&Schars_in_region); |
| 2017 | defsubr (&Sstring); |
| 2018 | defsubr (&Scmpcharp); |
| 2019 | defsubr (&Scmpchar_component); |
| 2020 | defsubr (&Scmpchar_cmp_rule); |
| 2021 | defsubr (&Scmpchar_cmp_rule_p); |
| 2022 | defsubr (&Scmpchar_cmp_count); |
| 2023 | defsubr (&Scompose_string); |
| 2024 | defsubr (&Ssetup_special_charsets); |
| 2025 | |
| 2026 | DEFVAR_LISP ("charset-list", &Vcharset_list, |
| 2027 | "List of charsets ever defined."); |
| 2028 | Vcharset_list = Fcons (Qascii, Qnil); |
| 2029 | |
| 2030 | DEFVAR_LISP ("translation-table-vector", &Vtranslation_table_vector, |
| 2031 | "Vector of cons cell of a symbol and translation table ever defined.\n\ |
| 2032 | An ID of a translation table is an index of this vector."); |
| 2033 | Vtranslation_table_vector = Fmake_vector (make_number (16), Qnil); |
| 2034 | |
| 2035 | DEFVAR_INT ("leading-code-composition", &leading_code_composition, |
| 2036 | "Leading-code of composite characters."); |
| 2037 | leading_code_composition = LEADING_CODE_COMPOSITION; |
| 2038 | |
| 2039 | DEFVAR_INT ("leading-code-private-11", &leading_code_private_11, |
| 2040 | "Leading-code of private TYPE9N charset of column-width 1."); |
| 2041 | leading_code_private_11 = LEADING_CODE_PRIVATE_11; |
| 2042 | |
| 2043 | DEFVAR_INT ("leading-code-private-12", &leading_code_private_12, |
| 2044 | "Leading-code of private TYPE9N charset of column-width 2."); |
| 2045 | leading_code_private_12 = LEADING_CODE_PRIVATE_12; |
| 2046 | |
| 2047 | DEFVAR_INT ("leading-code-private-21", &leading_code_private_21, |
| 2048 | "Leading-code of private TYPE9Nx9N charset of column-width 1."); |
| 2049 | leading_code_private_21 = LEADING_CODE_PRIVATE_21; |
| 2050 | |
| 2051 | DEFVAR_INT ("leading-code-private-22", &leading_code_private_22, |
| 2052 | "Leading-code of private TYPE9Nx9N charset of column-width 2."); |
| 2053 | leading_code_private_22 = LEADING_CODE_PRIVATE_22; |
| 2054 | |
| 2055 | DEFVAR_INT ("nonascii-insert-offset", &nonascii_insert_offset, |
| 2056 | "Offset for converting non-ASCII unibyte codes 0240...0377 to multibyte.\n\ |
| 2057 | This is used for converting unibyte text to multibyte,\n\ |
| 2058 | and for inserting character codes specified by number.\n\n\ |
| 2059 | This serves to convert a Latin-1 or similar 8-bit character code\n\ |
| 2060 | to the corresponding Emacs multibyte character code.\n\ |
| 2061 | Typically the value should be (- (make-char CHARSET 0) 128),\n\ |
| 2062 | for your choice of character set.\n\ |
| 2063 | If `nonascii-translation-table' is non-nil, it overrides this variable."); |
| 2064 | nonascii_insert_offset = 0; |
| 2065 | |
| 2066 | DEFVAR_LISP ("nonascii-translation-table", &Vnonascii_translation_table, |
| 2067 | "Translation table to convert non-ASCII unibyte codes to multibyte.\n\ |
| 2068 | This is used for converting unibyte text to multibyte,\n\ |
| 2069 | and for inserting character codes specified by number.\n\n\ |
| 2070 | Conversion is performed only when multibyte characters are enabled,\n\ |
| 2071 | and it serves to convert a Latin-1 or similar 8-bit character code\n\ |
| 2072 | to the corresponding Emacs character code.\n\n\ |
| 2073 | If this is nil, `nonascii-insert-offset' is used instead.\n\ |
| 2074 | See also the docstring of `make-translation-table'."); |
| 2075 | Vnonascii_translation_table = Qnil; |
| 2076 | |
| 2077 | DEFVAR_INT ("min-composite-char", &min_composite_char, |
| 2078 | "Minimum character code of a composite character."); |
| 2079 | min_composite_char = MIN_CHAR_COMPOSITION; |
| 2080 | |
| 2081 | DEFVAR_LISP ("auto-fill-chars", &Vauto_fill_chars, |
| 2082 | "A char-table for characters which invoke auto-filling.\n\ |
| 2083 | Such characters has value t in this table."); |
| 2084 | Vauto_fill_chars = Fmake_char_table (Qauto_fill_chars, Qnil); |
| 2085 | CHAR_TABLE_SET (Vauto_fill_chars, make_number (' '), Qt); |
| 2086 | CHAR_TABLE_SET (Vauto_fill_chars, make_number ('\n'), Qt); |
| 2087 | } |
| 2088 | |
| 2089 | #endif /* emacs */ |