1 /* Header for UCS-4 character representation.
2 Copyright (C) 1999 Electrotechnical Laboratory, JAPAN.
3 Licensed to the Free Software Foundation.
5 This file is part of XEmacs.
7 XEmacs is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with XEmacs; 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. */
22 /* Rewritten by MORIOKA Tomohiko <tomo@m17n.org>. */
24 #ifndef _XEMACS_CHARACTER_H
25 #define _XEMACS_CHARACTER_H
27 /************************************************************************/
28 /* Definition of leading bytes */
29 /************************************************************************/
31 #define MIN_LEADING_BYTE 0x80
32 /* These need special treatment in a string and/or character */
33 #define LEADING_BYTE_ASCII 0x8E /* Omitted in a buffer */
34 #ifdef ENABLE_COMPOSITE_CHARS
36 #define LEADING_BYTE_COMPOSITE 0x80 /* for a composite character */
37 #define LEADING_BYTE_CONTROL_1 0x8F /* represent normal 80-9F */
39 /** The following are for 1-byte characters in an official charset. **/
41 #define LEADING_BYTE_LATIN_ISO8859_1 0x81 /* Right half of ISO 8859-1 */
42 #define LEADING_BYTE_LATIN_ISO8859_2 0x82 /* Right half of ISO 8859-2 */
43 #define LEADING_BYTE_LATIN_ISO8859_3 0x83 /* Right half of ISO 8859-3 */
44 #define LEADING_BYTE_LATIN_ISO8859_4 0x84 /* Right half of ISO 8859-4 */
45 #define LEADING_BYTE_THAI_TIS620 0x85 /* TIS620-2533 */
46 #define LEADING_BYTE_GREEK_ISO8859_7 0x86 /* Right half of ISO 8859-7 */
47 #define LEADING_BYTE_ARABIC_ISO8859_6 0x87 /* Right half of ISO 8859-6 */
48 #define LEADING_BYTE_HEBREW_ISO8859_8 0x88 /* Right half of ISO 8859-8 */
49 #define LEADING_BYTE_KATAKANA_JISX0201 0x89 /* Right half of JIS X0201-1976 */
50 #define LEADING_BYTE_LATIN_JISX0201 0x8A /* Left half of JIS X0201-1976 */
51 #define LEADING_BYTE_CYRILLIC_ISO8859_5 0x8C /* Right half of ISO 8859-5 */
52 #define LEADING_BYTE_LATIN_ISO8859_9 0x8D /* Right half of ISO 8859-9 */
54 #define MIN_LEADING_BYTE_OFFICIAL_1 LEADING_BYTE_LATIN_ISO8859_1
55 #define MAX_LEADING_BYTE_OFFICIAL_1 LEADING_BYTE_LATIN_ISO8859_9
57 /** The following are for 2-byte characters in an official charset. **/
59 #define LEADING_BYTE_JAPANESE_JISX0208_1978 0x90/* Japanese JIS X0208-1978 */
60 #define LEADING_BYTE_CHINESE_GB2312 0x91 /* Chinese Hanzi GB2312-1980 */
61 #define LEADING_BYTE_JAPANESE_JISX0208 0x92 /* Japanese JIS X0208-1983 */
62 #define LEADING_BYTE_KOREAN_KSC5601 0x93 /* Hangul KS C5601-1987 */
63 #define LEADING_BYTE_JAPANESE_JISX0212 0x94 /* Japanese JIS X0212-1990 */
64 #define LEADING_BYTE_CHINESE_CCITT_GB 0x95 /* CCITT Extended GB */
65 #define LEADING_BYTE_CHINESE_BIG5_1 0x96 /* Big5 Level 1 */
66 #define LEADING_BYTE_CHINESE_CNS11643_1 0x97 /* Chinese CNS11643 Set 1 */
67 #define LEADING_BYTE_CHINESE_CNS11643_2 0x98 /* Chinese CNS11643 Set 2 */
68 #define LEADING_BYTE_CHINESE_CNS11643_3 0x99 /* Chinese CNS11643 Set 3 */
69 #define LEADING_BYTE_CHINESE_CNS11643_4 0x9A /* Chinese CNS11643 Set 4 */
70 #define LEADING_BYTE_CHINESE_CNS11643_5 0x9B /* Chinese CNS11643 Set 5 */
71 #define LEADING_BYTE_CHINESE_CNS11643_6 0x9C /* Chinese CNS11643 Set 6 */
72 #define LEADING_BYTE_CHINESE_CNS11643_7 0x9D /* Chinese CNS11643 Set 7 */
73 #define LEADING_BYTE_CHINESE_BIG5_2 0x9D /* Big5 Level 2 */
74 #define LEADING_BYTE_KOREAN_KPS9566 0x9E /* DPRK Hangul KPS 9566-1997 */
76 #define MIN_LEADING_BYTE_OFFICIAL_2 LEADING_BYTE_JAPANESE_JISX0208_1978
77 #define MAX_LEADING_BYTE_OFFICIAL_2 LEADING_BYTE_CHINESE_BIG5_2
79 /** The following are for 1- and 2-byte characters in a private charset. **/
81 #define PRE_LEADING_BYTE_PRIVATE_1 0x9E /* 1-byte char-set */
82 #define PRE_LEADING_BYTE_PRIVATE_2 0x9F /* 2-byte char-set */
84 #define MIN_LEADING_BYTE_PRIVATE_1 0xA0
85 #define MAX_LEADING_BYTE_PRIVATE_1 0xEF
86 #define MIN_LEADING_BYTE_PRIVATE_2 0xF0
87 #define MAX_LEADING_BYTE_PRIVATE_2 0xFF
89 #define NUM_LEADING_BYTES 128
92 /************************************************************************/
93 /* Operations on leading bytes */
94 /************************************************************************/
96 /* Is this leading byte for a private charset? */
98 #define LEADING_BYTE_PRIVATE_P(lb) ((lb) >= MIN_LEADING_BYTE_PRIVATE_1)
100 /* Is this a prefix for a private leading byte? */
102 INLINE int LEADING_BYTE_PREFIX_P (unsigned char lb);
104 LEADING_BYTE_PREFIX_P (unsigned char lb)
106 return (lb == PRE_LEADING_BYTE_PRIVATE_1 ||
107 lb == PRE_LEADING_BYTE_PRIVATE_2);
110 /* Given a private leading byte, return the leading byte prefix stored
113 #define PRIVATE_LEADING_BYTE_PREFIX(lb) \
114 ((lb) < MIN_LEADING_BYTE_PRIVATE_2 ? \
115 PRE_LEADING_BYTE_PRIVATE_1 : \
116 PRE_LEADING_BYTE_PRIVATE_2)
119 /************************************************************************/
120 /* Operations on individual bytes */
122 /************************************************************************/
124 /* Argument `c' should be (unsigned int) or (unsigned char). */
125 /* Note that SP and DEL are not included. */
127 #define BYTE_ASCII_P(c) ((c) < 0x80)
128 #define BYTE_C0_P(c) ((c) < 0x20)
129 /* Do some forced casting just to make *sure* things are gotten right. */
130 #define BYTE_C1_P(c) ((unsigned int) ((unsigned int) (c) - 0x80) < 0x20)
133 /************************************************************************/
134 /* Operations on individual bytes */
135 /* in a Mule-formatted string */
136 /************************************************************************/
138 /* Does this byte represent the first byte of a character? */
142 BUFBYTE_FIRST_BYTE_P(Bufbyte c)
144 return (c <= 0x7f) || (0xc0 <= c);
147 #define BUFBYTE_FIRST_BYTE_P(c) ((c) < 0xA0)
150 /* Does this byte represent the first byte of a multi-byte character? */
152 #define BUFBYTE_LEADING_BYTE_P(c) BYTE_C1_P (c)
155 /************************************************************************/
156 /* Information about a particular character set */
157 /************************************************************************/
161 struct lcrecord_header header;
165 Lisp_Object doc_string, registry, short_name, long_name;
167 Lisp_Object reverse_direction_charset;
169 Lisp_Object ccl_program;
171 /* Final byte of this character set in ISO2022 designating escape sequence */
174 /* Number of bytes (1 - 4) required in the internal representation
175 for characters in this character set. This is *not* the
176 same as the dimension of the character set). */
177 unsigned int rep_bytes;
179 /* Number of columns a character in this charset takes up, on TTY
180 devices. Not used for X devices. */
181 unsigned int columns;
183 /* Direction of this character set */
184 unsigned int direction;
186 /* Type of this character set (94, 96, 94x94, 96x96) */
189 /* Number of bytes used in encoding of this character set (1 or 2) */
190 unsigned int dimension;
192 /* Number of chars in each dimension (usually 94 or 96) */
195 /* Which half of font to be used to display this character set */
196 unsigned int graphic;
199 DECLARE_LRECORD (charset, struct Lisp_Charset);
200 #define XCHARSET(x) XRECORD (x, charset, struct Lisp_Charset)
201 #define XSETCHARSET(x, p) XSETRECORD (x, p, charset)
202 #define CHARSETP(x) RECORDP (x, charset)
203 #define GC_CHARSETP(x) GC_RECORDP (x, charset)
204 #define CHECK_CHARSET(x) CHECK_RECORD (x, charset)
205 #define CONCHECK_CHARSET(x) CONCHECK_RECORD (x, charset)
207 #define CHARSET_TYPE_94 0 /* This charset includes 94 characters. */
208 #define CHARSET_TYPE_96 1 /* This charset includes 96 characters. */
209 #define CHARSET_TYPE_94X94 2 /* This charset includes 94x94 characters. */
210 #define CHARSET_TYPE_96X96 3 /* This charset includes 96x96 characters. */
212 #define CHARSET_LEFT_TO_RIGHT 0
213 #define CHARSET_RIGHT_TO_LEFT 1
215 /* Leading byte and id have been regrouped. -- OG */
216 #define CHARSET_ID(cs) ((cs)->id)
217 #define CHARSET_LEADING_BYTE(cs) ((Bufbyte)(CHARSET_ID(cs)))
218 #define CHARSET_NAME(cs) ((cs)->name)
219 #define CHARSET_SHORT_NAME(cs) ((cs)->short_name)
220 #define CHARSET_LONG_NAME(cs) ((cs)->long_name)
221 #define CHARSET_REP_BYTES(cs) ((cs)->rep_bytes)
222 #define CHARSET_COLUMNS(cs) ((cs)->columns)
223 #define CHARSET_GRAPHIC(cs) ((cs)->graphic)
224 #define CHARSET_TYPE(cs) ((cs)->type)
225 #define CHARSET_DIRECTION(cs) ((cs)->direction)
226 #define CHARSET_FINAL(cs) ((cs)->final)
227 #define CHARSET_DOC_STRING(cs) ((cs)->doc_string)
228 #define CHARSET_REGISTRY(cs) ((cs)->registry)
229 #define CHARSET_CCL_PROGRAM(cs) ((cs)->ccl_program)
230 #define CHARSET_DIMENSION(cs) ((cs)->dimension)
231 #define CHARSET_CHARS(cs) ((cs)->chars)
232 #define CHARSET_REVERSE_DIRECTION_CHARSET(cs) ((cs)->reverse_direction_charset)
235 #define CHARSET_PRIVATE_P(cs) LEADING_BYTE_PRIVATE_P (CHARSET_LEADING_BYTE (cs))
237 #define XCHARSET_ID(cs) CHARSET_ID (XCHARSET (cs))
238 #define XCHARSET_NAME(cs) CHARSET_NAME (XCHARSET (cs))
239 #define XCHARSET_SHORT_NAME(cs) CHARSET_SHORT_NAME (XCHARSET (cs))
240 #define XCHARSET_LONG_NAME(cs) CHARSET_LONG_NAME (XCHARSET (cs))
241 #define XCHARSET_REP_BYTES(cs) CHARSET_REP_BYTES (XCHARSET (cs))
242 #define XCHARSET_COLUMNS(cs) CHARSET_COLUMNS (XCHARSET (cs))
243 #define XCHARSET_GRAPHIC(cs) CHARSET_GRAPHIC (XCHARSET (cs))
244 #define XCHARSET_TYPE(cs) CHARSET_TYPE (XCHARSET (cs))
245 #define XCHARSET_DIRECTION(cs) CHARSET_DIRECTION (XCHARSET (cs))
246 #define XCHARSET_FINAL(cs) CHARSET_FINAL (XCHARSET (cs))
247 #define XCHARSET_DOC_STRING(cs) CHARSET_DOC_STRING (XCHARSET (cs))
248 #define XCHARSET_REGISTRY(cs) CHARSET_REGISTRY (XCHARSET (cs))
249 #define XCHARSET_LEADING_BYTE(cs) CHARSET_LEADING_BYTE (XCHARSET (cs))
250 #define XCHARSET_CCL_PROGRAM(cs) CHARSET_CCL_PROGRAM (XCHARSET (cs))
251 #define XCHARSET_DIMENSION(cs) CHARSET_DIMENSION (XCHARSET (cs))
252 #define XCHARSET_CHARS(cs) CHARSET_CHARS (XCHARSET (cs))
253 #define XCHARSET_PRIVATE_P(cs) CHARSET_PRIVATE_P (XCHARSET (cs))
254 #define XCHARSET_REVERSE_DIRECTION_CHARSET(cs) \
255 CHARSET_REVERSE_DIRECTION_CHARSET (XCHARSET (cs))
257 /* Table of charsets indexed by (leading byte - 128). */
258 extern Lisp_Object charset_by_leading_byte[128];
260 /* Table of charsets indexed by type/final-byte/direction. */
261 extern Lisp_Object charset_by_attributes[4][128][2];
263 /* Table of number of bytes in the string representation of a character
264 indexed by the first byte of that representation.
266 This value can be derived other ways -- e.g. something like
268 (BYTE_ASCII_P (first_byte) ? 1 :
269 XCHARSET_REP_BYTES (CHARSET_BY_LEADING_BYTE (first_byte)))
271 but it's faster this way. */
272 extern Bytecount rep_bytes_by_first_byte[0xA0];
274 #ifdef ERROR_CHECK_TYPECHECK
275 /* int not Bufbyte even though that is the actual type of a leading byte.
276 This way, out-ot-range values will get caught rather than automatically
278 INLINE Lisp_Object CHARSET_BY_LEADING_BYTE (int lb);
280 CHARSET_BY_LEADING_BYTE (int lb)
282 assert (lb >= 0x80 && lb <= 0xFF);
283 return charset_by_leading_byte[lb - 128];
288 #define CHARSET_BY_LEADING_BYTE(lb) (charset_by_leading_byte[(lb) - 128])
292 #define CHARSET_BY_ATTRIBUTES(type, final, dir) \
293 (charset_by_attributes[type][final][dir])
296 INLINE int REP_BYTES_BY_FIRST_BYTE (int fb);
298 REP_BYTES_BY_FIRST_BYTE (int fb)
302 else if ( fb >= 0xf8 )
304 else if ( fb >= 0xf0 )
306 else if ( fb >= 0xe0 )
308 else if ( fb >= 0xc0 )
314 #ifdef ERROR_CHECK_TYPECHECK
316 /* Number of bytes in the string representation of a character */
317 INLINE int REP_BYTES_BY_FIRST_BYTE (int fb);
319 REP_BYTES_BY_FIRST_BYTE (int fb)
321 assert (fb >= 0 && fb < 0xA0);
322 return rep_bytes_by_first_byte[fb];
326 #define REP_BYTES_BY_FIRST_BYTE(fb) (rep_bytes_by_first_byte[fb])
328 #endif /* end MULE */
331 /************************************************************************/
332 /* Dealing with characters */
333 /************************************************************************/
335 /* Is this character represented by more than one byte in a string? */
337 #define CHAR_MULTIBYTE_P(c) ((c) >= 0x80)
339 #define CHAR_ASCII_P(c) (!CHAR_MULTIBYTE_P (c))
341 /* The bit fields of character are divided into 3 parts:
342 FIELD1(5bits):FIELD2(7bits):FIELD3(7bits) */
344 #define CHAR_FIELD1_MASK (0x7F << 14)
345 #define CHAR_FIELD2_MASK (0x7F << 7)
346 #define CHAR_FIELD3_MASK 0x7F
348 #define MIN_CHAR_GREEK 0x0370
349 #define MAX_CHAR_GREEK 0x03CF
351 #define MIN_CHAR_CYRILLIC 0x0400
352 #define MAX_CHAR_CYRILLIC 0x045F
354 #define MIN_CHAR_HEBREW 0x0590
355 #define MAX_CHAR_HEBREW 0x05EF
357 #define MIN_CHAR_THAI 0x0E00
358 #define MAX_CHAR_THAI 0x0E5F
360 #define MIN_CHAR_HALFWIDTH_KATAKANA 0xFF60
361 #define MAX_CHAR_HALFWIDTH_KATAKANA 0xFF9F
363 /* Macros to access each field of a character code of C. */
365 #define CHAR_FIELD1(c) (((c) & CHAR_FIELD1_MASK) >> 14)
366 #define CHAR_FIELD2_INTERNAL(c) (((c) & CHAR_FIELD2_MASK) >> 7)
367 #define CHAR_FIELD3_INTERNAL(c) ((c) & CHAR_FIELD3_MASK)
369 /* Field 1, if non-zero, usually holds a leading byte for a
370 dimension-2 charset. Field 2, if non-zero, usually holds a leading
371 byte for a dimension-1 charset. */
373 /* Converting between field values and leading bytes. */
375 #define FIELD2_TO_OFFICIAL_LEADING_BYTE 0x80
376 #define FIELD2_TO_PRIVATE_LEADING_BYTE 0x80
378 #define FIELD1_TO_PRIVATE_LEADING_BYTE 0xc0
379 #define FIELD1_TO_OFFICIAL_LEADING_BYTE 0x50
382 CHAR_FIELD2 (Emchar c)
384 if( (MIN_CHAR_GREEK <= c) && (c <= MAX_CHAR_GREEK) )
385 return LEADING_BYTE_GREEK_ISO8859_7
386 - FIELD2_TO_OFFICIAL_LEADING_BYTE;
387 else if( (MIN_CHAR_CYRILLIC <= c) && (c <= MAX_CHAR_CYRILLIC) )
388 return LEADING_BYTE_CYRILLIC_ISO8859_5
389 - FIELD2_TO_OFFICIAL_LEADING_BYTE;
390 else if( (MIN_CHAR_HEBREW <= c) && (c <= MAX_CHAR_HEBREW) )
391 return LEADING_BYTE_HEBREW_ISO8859_8
392 - FIELD2_TO_OFFICIAL_LEADING_BYTE;
393 else if( (MIN_CHAR_THAI <= c) && (c <= MAX_CHAR_THAI) )
394 return LEADING_BYTE_THAI_TIS620
395 - FIELD2_TO_OFFICIAL_LEADING_BYTE;
396 else if( (MIN_CHAR_HALFWIDTH_KATAKANA <= c)
397 && (c <= MAX_CHAR_HALFWIDTH_KATAKANA) )
398 return LEADING_BYTE_KATAKANA_JISX0201
399 - FIELD2_TO_OFFICIAL_LEADING_BYTE;
401 return CHAR_FIELD2_INTERNAL(c);
405 CHAR_FIELD3 (Emchar c)
407 if( (MIN_CHAR_GREEK <= c) && (c <= MAX_CHAR_GREEK) )
408 return c - MIN_CHAR_GREEK + 0x20;
409 else if( (MIN_CHAR_CYRILLIC <= c) && (c <= MAX_CHAR_CYRILLIC) )
410 return c - MIN_CHAR_CYRILLIC + 0x20;
411 else if( (MIN_CHAR_HEBREW <= c) && (c <= MAX_CHAR_HEBREW) )
412 return c - MIN_CHAR_HEBREW + 0x20;
413 else if( (MIN_CHAR_THAI <= c) && (c <= MAX_CHAR_THAI) )
414 return c - MIN_CHAR_THAI + 0x20;
415 else if( (MIN_CHAR_HALFWIDTH_KATAKANA <= c)
416 && (c <= MAX_CHAR_HALFWIDTH_KATAKANA) )
417 return c - MIN_CHAR_HALFWIDTH_KATAKANA + 0x20;
419 return CHAR_FIELD3_INTERNAL(c);
422 /* Minimum and maximum allowed values for the fields. */
424 #define MIN_CHAR_FIELD2_OFFICIAL \
425 (MIN_LEADING_BYTE_OFFICIAL_1 - FIELD2_TO_OFFICIAL_LEADING_BYTE)
426 #define MAX_CHAR_FIELD2_OFFICIAL \
427 (MAX_LEADING_BYTE_OFFICIAL_1 - FIELD2_TO_OFFICIAL_LEADING_BYTE)
429 #define MIN_CHAR_FIELD1_OFFICIAL \
430 (MIN_LEADING_BYTE_OFFICIAL_2 - FIELD1_TO_OFFICIAL_LEADING_BYTE)
431 #define MAX_CHAR_FIELD1_OFFICIAL \
432 (MAX_LEADING_BYTE_OFFICIAL_2 - FIELD1_TO_OFFICIAL_LEADING_BYTE)
434 #define MIN_CHAR_FIELD2_PRIVATE \
435 (MIN_LEADING_BYTE_PRIVATE_1 - FIELD2_TO_PRIVATE_LEADING_BYTE)
436 #define MAX_CHAR_FIELD2_PRIVATE \
437 (MAX_LEADING_BYTE_PRIVATE_1 - FIELD2_TO_PRIVATE_LEADING_BYTE)
439 #define MIN_CHAR_FIELD1_PRIVATE \
440 (MIN_LEADING_BYTE_PRIVATE_2 - FIELD1_TO_PRIVATE_LEADING_BYTE)
441 #define MAX_CHAR_FIELD1_PRIVATE \
442 (MAX_LEADING_BYTE_PRIVATE_2 - FIELD1_TO_PRIVATE_LEADING_BYTE)
444 /* Minimum character code of each <type> character. */
446 #define MULE_CHAR_PRIVATE_OFFSET (0xe0 << 16)
448 #define MIN_CHAR_OFFICIAL_TYPE9N \
449 (MULE_CHAR_PRIVATE_OFFSET | (MIN_CHAR_FIELD2_OFFICIAL << 7))
450 #define MIN_CHAR_PRIVATE_TYPE9N \
451 (MULE_CHAR_PRIVATE_OFFSET | (MIN_CHAR_FIELD2_PRIVATE << 7))
452 #define MIN_CHAR_PRIVATE_TYPE9NX9N \
453 (MULE_CHAR_PRIVATE_OFFSET | (MIN_CHAR_FIELD1_PRIVATE << 14))
454 #define MIN_CHAR_OFFICIAL_TYPE9NX9N \
455 (MULE_CHAR_PRIVATE_OFFSET | (MIN_CHAR_FIELD1_OFFICIAL << 14))
456 #define MIN_CHAR_COMPOSITION \
457 (MULE_CHAR_PRIVATE_OFFSET | (0x7f << 14))
459 /* Leading byte of a character.
461 NOTE: This takes advantage of the fact that
462 FIELD2_TO_OFFICIAL_LEADING_BYTE and
463 FIELD2_TO_PRIVATE_LEADING_BYTE are the same.
466 INLINE Bufbyte CHAR_LEADING_BYTE (Emchar c);
468 CHAR_LEADING_BYTE (Emchar c)
470 if (CHAR_ASCII_P (c))
471 return LEADING_BYTE_ASCII;
473 return LEADING_BYTE_CONTROL_1;
475 return LEADING_BYTE_LATIN_ISO8859_1;
476 else if (c <= MAX_CHAR_GREEK)
477 return LEADING_BYTE_GREEK_ISO8859_7;
478 else if (c <= MAX_CHAR_CYRILLIC)
479 return LEADING_BYTE_CYRILLIC_ISO8859_5;
480 else if (c <= MAX_CHAR_HEBREW)
481 return LEADING_BYTE_HEBREW_ISO8859_8;
482 else if (c <= MAX_CHAR_THAI)
483 return LEADING_BYTE_THAI_TIS620;
484 else if (c <= MAX_CHAR_HALFWIDTH_KATAKANA)
485 return LEADING_BYTE_KATAKANA_JISX0201;
486 else if (c < MIN_CHAR_PRIVATE_TYPE9NX9N)
487 return CHAR_FIELD2 (c) + FIELD2_TO_OFFICIAL_LEADING_BYTE;
488 else if (c < MIN_CHAR_OFFICIAL_TYPE9NX9N)
489 return CHAR_FIELD1 (c) + FIELD1_TO_PRIVATE_LEADING_BYTE;
490 else if (c < MIN_CHAR_COMPOSITION)
491 return CHAR_FIELD1 (c) + FIELD1_TO_OFFICIAL_LEADING_BYTE;
494 #ifdef ENABLE_COMPOSITE_CHARS
495 return LEADING_BYTE_COMPOSITE;
499 #endif /* ENABLE_COMPOSITE_CHARS */
503 #define CHAR_CHARSET(c) CHARSET_BY_LEADING_BYTE (CHAR_LEADING_BYTE (c))
505 /* Return a character whose charset is CHARSET and position-codes
506 are C1 and C2. TYPE9N character ignores C2.
508 NOTE: This takes advantage of the fact that
509 FIELD2_TO_OFFICIAL_LEADING_BYTE and
510 FIELD2_TO_PRIVATE_LEADING_BYTE are the same.
513 INLINE Emchar MAKE_CHAR (Lisp_Object charset, int c1, int c2);
515 MAKE_CHAR (Lisp_Object charset, int c1, int c2)
517 if (EQ (charset, Vcharset_ascii))
519 else if (EQ (charset, Vcharset_control_1))
521 else if (EQ (charset, Vcharset_latin_iso8859_1))
523 else if (EQ (charset, Vcharset_greek_iso8859_7))
524 return c1 + MIN_CHAR_GREEK - 0x20;
525 else if (EQ (charset, Vcharset_cyrillic_iso8859_5))
526 return c1 + MIN_CHAR_CYRILLIC - 0x20;
527 else if (EQ (charset, Vcharset_hebrew_iso8859_8))
528 return c1 + MIN_CHAR_HEBREW - 0x20;
529 else if (EQ (charset, Vcharset_thai_tis620))
530 return c1 + MIN_CHAR_THAI - 0x20;
531 else if (EQ (charset, Vcharset_katakana_jisx0201))
533 return c1 + MIN_CHAR_HALFWIDTH_KATAKANA - 0x20;
536 #ifdef ENABLE_COMPOSITE_CHARS
537 else if (EQ (charset, Vcharset_composite))
538 return (0x1F << 14) | ((c1) << 7) | (c2);
540 else if (XCHARSET_DIMENSION (charset) == 1)
541 return MULE_CHAR_PRIVATE_OFFSET
542 | ((XCHARSET_LEADING_BYTE (charset) -
543 FIELD2_TO_OFFICIAL_LEADING_BYTE) << 7) | (c1);
544 else if (!XCHARSET_PRIVATE_P (charset))
545 return MULE_CHAR_PRIVATE_OFFSET
546 | ((XCHARSET_LEADING_BYTE (charset) -
547 FIELD1_TO_OFFICIAL_LEADING_BYTE) << 14) | ((c1) << 7) | (c2);
549 return MULE_CHAR_PRIVATE_OFFSET
550 | ((XCHARSET_LEADING_BYTE (charset) -
551 FIELD1_TO_PRIVATE_LEADING_BYTE) << 14) | ((c1) << 7) | (c2);
554 /* The charset of character C is set to CHARSET, and the
555 position-codes of C are set to C1 and C2. C2 of TYPE9N character
558 /* BREAKUP_CHAR_1_UNSAFE assumes that the charset has already been
559 calculated, and just computes c1 and c2.
561 BREAKUP_CHAR also computes and stores the charset. */
563 #define BREAKUP_CHAR_1_UNSAFE(c, charset, c1, c2) \
564 XCHARSET_DIMENSION (charset) == 1 \
565 ? ((c1) = CHAR_FIELD3 (c), (c2) = 0) \
566 : ((c1) = CHAR_FIELD2 (c), \
567 (c2) = CHAR_FIELD3 (c))
569 INLINE void breakup_char_1 (Emchar c, Lisp_Object *charset, int *c1, int *c2);
571 breakup_char_1 (Emchar c, Lisp_Object *charset, int *c1, int *c2)
573 *charset = CHAR_CHARSET (c);
574 BREAKUP_CHAR_1_UNSAFE (c, *charset, *c1, *c2);
577 #define BREAKUP_CHAR(c, charset, c1, c2) \
578 breakup_char_1 (c, &(charset), &(c1), &(c2))
582 #ifdef ENABLE_COMPOSITE_CHARS
583 /************************************************************************/
584 /* Composite characters */
585 /************************************************************************/
587 Emchar lookup_composite_char (Bufbyte *str, int len);
588 Lisp_Object composite_char_string (Emchar ch);
589 #endif /* ENABLE_COMPOSITE_CHARS */
592 /************************************************************************/
593 /* Exported functions */
594 /************************************************************************/
596 EXFUN (Ffind_charset, 1);
597 EXFUN (Fget_charset, 1);
599 extern Lisp_Object Vcharset_chinese_big5_1;
600 extern Lisp_Object Vcharset_chinese_big5_2;
601 extern Lisp_Object Vcharset_japanese_jisx0208;
603 Emchar Lstream_get_emchar_1 (Lstream *stream, int first_char);
604 int Lstream_fput_emchar (Lstream *stream, Emchar ch);
605 void Lstream_funget_emchar (Lstream *stream, Emchar ch);
607 int copy_internal_to_external (CONST Bufbyte *internal, Bytecount len,
608 unsigned char *external);
609 Bytecount copy_external_to_internal (CONST unsigned char *external,
610 int len, Bufbyte *internal);
612 #endif /* _XEMACS_CHARACTER_H */