1 /* Basic character set support.
2 Copyright (C) 1995, 97, 98, 2000, 2001 Electrotechnical Laboratory, JAPAN.
3 Licensed to the Free Software Foundation.
4 Copyright (C) 2001 Free Software Foundation, Inc.
6 National Institute of Advanced Industrial Science and Technology (AIST)
7 Registration Number H13PRO009
9 This file is part of GNU Emacs.
11 GNU Emacs is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2, or (at your option)
16 GNU Emacs is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with GNU Emacs; see the file COPYING. If not, write to
23 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
31 #include <sys/types.h>
33 #include "character.h"
39 /*** GENERAL NOTES on CODED CHARACTER SETS (CHARSETS) ***
41 A coded character set ("charset" hereafter) is a meaningful
42 collection (i.e. language, culture, functionality, etc.) of
43 characters. Emacs handles multiple charsets at once. In Emacs Lisp
44 code, a charset is represented by a symbol. In C code, a charset is
45 represented by its ID number or by a pointer to a struct charset.
47 The actual information about each charset is stored in two places.
48 Lispy information is stored in the hash table Vcharset_hash_table as
49 a vector (charset attributes). The other information is stored in
50 charset_table as a struct charset.
54 /* List of all charsets. This variable is used only from Emacs
56 Lisp_Object Vcharset_list
;
58 /* Hash table that contains attributes of each charset. Keys are
59 charset symbols, and values are vectors of charset attributes. */
60 Lisp_Object Vcharset_hash_table
;
62 /* Table of struct charset. */
63 struct charset
*charset_table
;
65 static int charset_table_size
;
66 static int charset_table_used
;
68 Lisp_Object Qcharsetp
;
70 /* Special charset symbols. */
72 Lisp_Object Qeight_bit
;
73 Lisp_Object Qiso_8859_1
;
76 /* The corresponding charsets. */
78 int charset_eight_bit
;
79 int charset_iso_8859_1
;
82 /* The other special charsets. */
83 int charset_jisx0201_roman
;
84 int charset_jisx0208_1978
;
87 /* Value of charset attribute `charset-iso-plane'. */
90 /* Charset of unibyte characters. */
93 /* List of charsets ordered by the priority. */
94 Lisp_Object Vcharset_ordered_list
;
96 /* Incremented everytime we change Vcharset_ordered_list. This is
97 unsigned short so that it fits in Lisp_Int and never matches
99 unsigned short charset_ordered_list_tick
;
101 /* List of iso-2022 charsets. */
102 Lisp_Object Viso_2022_charset_list
;
104 /* List of emacs-mule charsets. */
105 Lisp_Object Vemacs_mule_charset_list
;
107 struct charset
*emacs_mule_charset
[256];
109 /* Mapping table from ISO2022's charset (specified by DIMENSION,
110 CHARS, and FINAL-CHAR) to Emacs' charset. */
111 int iso_charset_table
[ISO_MAX_DIMENSION
][ISO_MAX_CHARS
][ISO_MAX_FINAL
];
113 Lisp_Object Vcharset_map_directory
;
115 Lisp_Object Vchar_unified_charset_table
;
117 /* Defined in chartab.c */
119 map_char_table_for_charset
P_ ((void (*c_function
) (Lisp_Object
, Lisp_Object
),
120 Lisp_Object function
, Lisp_Object table
,
121 Lisp_Object arg
, struct charset
*charset
,
122 unsigned from
, unsigned to
));
124 #define CODE_POINT_TO_INDEX(charset, code) \
125 ((charset)->code_linear_p \
126 ? (code) - (charset)->min_code \
127 : (((charset)->code_space_mask[(code) >> 24] & 0x8) \
128 && ((charset)->code_space_mask[((code) >> 16) & 0xFF] & 0x4) \
129 && ((charset)->code_space_mask[((code) >> 8) & 0xFF] & 0x2) \
130 && ((charset)->code_space_mask[(code) & 0xFF] & 0x1)) \
131 ? (((((code) >> 24) - (charset)->code_space[12]) \
132 * (charset)->code_space[11]) \
133 + (((((code) >> 16) & 0xFF) - (charset)->code_space[8]) \
134 * (charset)->code_space[7]) \
135 + (((((code) >> 8) & 0xFF) - (charset)->code_space[4]) \
136 * (charset)->code_space[3]) \
137 + (((code) & 0xFF) - (charset)->code_space[0]) \
138 - ((charset)->char_index_offset)) \
142 /* Convert the character index IDX to code-point CODE for CHARSET.
143 It is assumed that IDX is in a valid range. */
145 #define INDEX_TO_CODE_POINT(charset, idx) \
146 ((charset)->code_linear_p \
147 ? (idx) + (charset)->min_code \
148 : (idx += (charset)->char_index_offset, \
149 (((charset)->code_space[0] + (idx) % (charset)->code_space[2]) \
150 | (((charset)->code_space[4] \
151 + ((idx) / (charset)->code_space[3] % (charset)->code_space[6])) \
153 | (((charset)->code_space[8] \
154 + ((idx) / (charset)->code_space[7] % (charset)->code_space[10])) \
156 | (((charset)->code_space[12] + ((idx) / (charset)->code_space[11])) \
162 /* Set to 1 to warn that a charset map is loaded and thus a buffer
163 text and a string data may be relocated. */
164 int charset_map_loaded
;
166 struct charset_map_entries
172 struct charset_map_entries
*next
;
175 /* Load the mapping information for CHARSET from ENTRIES.
177 If CONTROL_FLAG is 0, setup CHARSET->min_char and CHARSET->max_char.
179 If CONTROL_FLAG is 1, setup CHARSET->min_char, CHARSET->max_char,
180 CHARSET->decoder, and CHARSET->encoder.
182 If CONTROL_FLAG is 2, setup CHARSET->deunifier and
183 Vchar_unify_table. If Vchar_unified_charset_table is non-nil,
187 load_charset_map (charset
, entries
, n_entries
, control_flag
)
188 struct charset
*charset
;
189 struct charset_map_entries
*entries
;
193 Lisp_Object vec
, table
;
194 unsigned max_code
= CHARSET_MAX_CODE (charset
);
195 int ascii_compatible_p
= charset
->ascii_compatible_p
;
196 int min_char
, max_char
, nonascii_min_char
;
198 unsigned char *fast_map
= charset
->fast_map
;
203 if (control_flag
> 0)
205 int n
= CODE_POINT_TO_INDEX (charset
, max_code
) + 1;
207 table
= Fmake_char_table (Qnil
, Qnil
);
208 if (control_flag
== 1)
209 vec
= Fmake_vector (make_number (n
), make_number (-1));
210 else if (! CHAR_TABLE_P (Vchar_unify_table
))
211 Vchar_unify_table
= Fmake_char_table (Qnil
, Qnil
);
213 charset_map_loaded
= 1;
216 min_char
= max_char
= entries
->entry
[0].c
;
217 nonascii_min_char
= MAX_CHAR
;
218 for (i
= 0; i
< n_entries
; i
++)
221 int from_index
, to_index
;
223 int idx
= i
% 0x10000;
225 if (i
> 0 && idx
== 0)
226 entries
= entries
->next
;
227 from
= entries
->entry
[idx
].from
;
228 to
= entries
->entry
[idx
].to
;
229 from_c
= entries
->entry
[idx
].c
;
230 from_index
= CODE_POINT_TO_INDEX (charset
, from
);
233 to_index
= from_index
;
238 to_index
= CODE_POINT_TO_INDEX (charset
, to
);
239 to_c
= from_c
+ (to_index
- from_index
);
241 if (from_index
< 0 || to_index
< 0)
244 if (control_flag
< 2)
250 else if (from_c
< min_char
)
252 if (ascii_compatible_p
)
254 if (! ASCII_BYTE_P (from_c
))
256 if (from_c
< nonascii_min_char
)
257 nonascii_min_char
= from_c
;
259 else if (! ASCII_BYTE_P (to_c
))
261 nonascii_min_char
= 0x80;
265 for (c
= from_c
; c
<= to_c
; c
++)
266 CHARSET_FAST_MAP_SET (c
, fast_map
);
268 if (control_flag
== 1)
270 unsigned code
= from
;
272 if (CHARSET_COMPACT_CODES_P (charset
))
275 ASET (vec
, from_index
, make_number (from_c
));
276 if (NILP (CHAR_TABLE_REF (table
, from_c
)))
277 CHAR_TABLE_SET (table
, from_c
, make_number (code
));
278 if (from_index
== to_index
)
280 from_index
++, from_c
++;
281 code
= INDEX_TO_CODE_POINT (charset
, from_index
);
284 for (; from_index
<= to_index
; from_index
++, from_c
++)
286 ASET (vec
, from_index
, make_number (from_c
));
287 if (NILP (CHAR_TABLE_REF (table
, from_c
)))
288 CHAR_TABLE_SET (table
, from_c
, make_number (from_index
));
294 unsigned code
= from
;
298 int c1
= DECODE_CHAR (charset
, code
);
302 CHAR_TABLE_SET (table
, from_c
, make_number (c1
));
303 CHAR_TABLE_SET (Vchar_unify_table
, c1
, make_number (from_c
));
304 if (CHAR_TABLE_P (Vchar_unified_charset_table
))
305 CHAR_TABLE_SET (Vchar_unified_charset_table
, c1
,
306 CHARSET_NAME (charset
));
308 if (from_index
== to_index
)
310 from_index
++, from_c
++;
311 code
= INDEX_TO_CODE_POINT (charset
, from_index
);
316 if (control_flag
< 2)
318 CHARSET_MIN_CHAR (charset
) = (ascii_compatible_p
319 ? nonascii_min_char
: min_char
);
320 CHARSET_MAX_CHAR (charset
) = max_char
;
321 if (control_flag
== 1)
323 CHARSET_DECODER (charset
) = vec
;
324 CHARSET_ENCODER (charset
) = table
;
328 CHARSET_DEUNIFIER (charset
) = table
;
332 /* Read a hexadecimal number (preceded by "0x") from the file FP while
333 paying attention to comment charcter '#'. */
335 static INLINE
unsigned
343 while ((c
= getc (fp
)) != EOF
)
347 while ((c
= getc (fp
)) != EOF
&& c
!= '\n');
351 if ((c
= getc (fp
)) == EOF
|| c
== 'x')
363 while ((c
= getc (fp
)) != EOF
&& isxdigit (c
))
365 | (c
<= '9' ? c
- '0' : c
<= 'F' ? c
- 'A' + 10 : c
- 'a' + 10));
367 while ((c
= getc (fp
)) != EOF
&& isdigit (c
))
368 n
= (n
* 10) + c
- '0';
375 /* Return a mapping vector for CHARSET loaded from MAPFILE.
376 Each line of MAPFILE has this form
378 where 0xAAAA is a code-point and 0xCCCC is the corresponding
379 character code, or this form
381 where 0xAAAA and 0xBBBB are code-points specifying a range, and
382 0xCCCC is the first character code of the range.
384 The returned vector has this form:
385 [ CODE1 CHAR1 CODE2 CHAR2 .... ]
386 where CODE1 is a code-point or a cons of code-points specifying a
389 extern void add_to_log
P_ ((char *, Lisp_Object
, Lisp_Object
));
392 load_charset_map_from_file (charset
, mapfile
, control_flag
)
393 struct charset
*charset
;
397 unsigned min_code
= CHARSET_MIN_CODE (charset
);
398 unsigned max_code
= CHARSET_MAX_CODE (charset
);
402 Lisp_Object suffixes
;
403 struct charset_map_entries
*head
, *entries
;
406 suffixes
= Fcons (build_string (".map"),
407 Fcons (build_string (".TXT"), Qnil
));
409 fd
= openp (Fcons (Vcharset_map_directory
, Qnil
), mapfile
, suffixes
,
412 || ! (fp
= fdopen (fd
, "r")))
414 add_to_log ("Failure in loading charset map: %S", mapfile
, Qnil
);
418 head
= entries
= ((struct charset_map_entries
*)
419 alloca (sizeof (struct charset_map_entries
)));
428 from
= read_hex (fp
, &eof
);
431 if (getc (fp
) == '-')
432 to
= read_hex (fp
, &eof
);
435 c
= (int) read_hex (fp
, &eof
);
437 if (from
< min_code
|| to
> max_code
|| from
> to
|| c
> MAX_CHAR
)
440 if (n_entries
> 0 && (n_entries
% 0x10000) == 0)
442 entries
->next
= ((struct charset_map_entries
*)
443 alloca (sizeof (struct charset_map_entries
)));
444 entries
= entries
->next
;
446 idx
= n_entries
% 0x10000;
447 entries
->entry
[idx
].from
= from
;
448 entries
->entry
[idx
].to
= to
;
449 entries
->entry
[idx
].c
= c
;
455 load_charset_map (charset
, head
, n_entries
, control_flag
);
459 load_charset_map_from_vector (charset
, vec
, control_flag
)
460 struct charset
*charset
;
464 unsigned min_code
= CHARSET_MIN_CODE (charset
);
465 unsigned max_code
= CHARSET_MAX_CODE (charset
);
466 struct charset_map_entries
*head
, *entries
;
468 int len
= ASIZE (vec
);
473 add_to_log ("Failure in loading charset map: %V", vec
, Qnil
);
477 head
= entries
= ((struct charset_map_entries
*)
478 alloca (sizeof (struct charset_map_entries
)));
480 for (i
= 0; i
< len
; i
+= 2)
482 Lisp_Object val
, val2
;
494 from
= XFASTINT (val
);
495 to
= XFASTINT (val2
);
500 from
= to
= XFASTINT (val
);
502 val
= AREF (vec
, i
+ 1);
506 if (from
< min_code
|| to
> max_code
|| from
> to
|| c
> MAX_CHAR
)
509 if ((n_entries
% 0x10000) == 0)
511 entries
->next
= ((struct charset_map_entries
*)
512 alloca (sizeof (struct charset_map_entries
)));
513 entries
= entries
->next
;
515 idx
= n_entries
% 0x10000;
516 entries
->entry
[idx
].from
= from
;
517 entries
->entry
[idx
].to
= to
;
518 entries
->entry
[idx
].c
= c
;
522 load_charset_map (charset
, head
, n_entries
, control_flag
);
526 load_charset (charset
)
527 struct charset
*charset
;
529 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP_DEFERRED
)
533 map
= CHARSET_MAP (charset
);
535 load_charset_map_from_file (charset
, map
, 1);
537 load_charset_map_from_vector (charset
, map
, 1);
538 CHARSET_METHOD (charset
) = CHARSET_METHOD_MAP
;
543 DEFUN ("charsetp", Fcharsetp
, Scharsetp
, 1, 1, 0,
544 doc
: /* Return non-nil if and only if OBJECT is a charset.*/)
548 return (CHARSETP (object
) ? Qt
: Qnil
);
553 map_charset_chars (c_function
, function
, arg
,
555 void (*c_function
) P_ ((Lisp_Object
, Lisp_Object
));
556 Lisp_Object function
, arg
;
557 struct charset
*charset
;
563 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP_DEFERRED
)
564 load_charset (charset
);
566 partial
= (from
> CHARSET_MIN_CODE (charset
)
567 || to
< CHARSET_MAX_CODE (charset
));
569 if (CHARSET_UNIFIED_P (charset
)
570 && CHAR_TABLE_P (CHARSET_DEUNIFIER (charset
)))
572 map_char_table_for_charset (c_function
, function
,
573 CHARSET_DEUNIFIER (charset
), arg
,
574 partial
? charset
: NULL
, from
, to
);
577 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_OFFSET
)
579 int from_idx
= CODE_POINT_TO_INDEX (charset
, from
);
580 int to_idx
= CODE_POINT_TO_INDEX (charset
, to
);
581 int from_c
= from_idx
+ CHARSET_CODE_OFFSET (charset
);
582 int to_c
= to_idx
+ CHARSET_CODE_OFFSET (charset
);
584 range
= Fcons (make_number (from_c
), make_number (to_c
));
586 (*c_function
) (arg
, range
);
588 call2 (function
, range
, arg
);
590 else if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP
)
592 if (! CHAR_TABLE_P (CHARSET_ENCODER (charset
)))
594 if (CHARSET_ASCII_COMPATIBLE_P (charset
) && from
<= 127)
596 range
= Fcons (make_number (from
), make_number (to
));
598 XSETCAR (range
, make_number (127));
601 (*c_function
) (arg
, range
);
603 call2 (function
, range
, arg
);
605 map_char_table_for_charset (c_function
, function
,
606 CHARSET_ENCODER (charset
), arg
,
607 partial
? charset
: NULL
, from
, to
);
609 else if (CHARSET_METHOD (charset
) == CHARSET_METHOD_SUBSET
)
611 Lisp_Object subset_info
;
614 subset_info
= CHARSET_SUBSET (charset
);
615 charset
= CHARSET_FROM_ID (XFASTINT (AREF (subset_info
, 0)));
616 offset
= XINT (AREF (subset_info
, 3));
618 if (from
< XFASTINT (AREF (subset_info
, 1)))
619 from
= XFASTINT (AREF (subset_info
, 1));
621 if (to
> XFASTINT (AREF (subset_info
, 2)))
622 to
= XFASTINT (AREF (subset_info
, 2));
623 map_charset_chars (c_function
, function
, arg
, charset
, from
, to
);
625 else /* i.e. CHARSET_METHOD_SUPERSET */
629 for (parents
= CHARSET_SUPERSET (charset
); CONSP (parents
);
630 parents
= XCDR (parents
))
633 unsigned this_from
, this_to
;
635 charset
= CHARSET_FROM_ID (XFASTINT (XCAR (XCAR (parents
))));
636 offset
= XINT (XCDR (XCAR (parents
)));
637 this_from
= from
- offset
;
638 this_to
= to
- offset
;
639 if (this_from
< CHARSET_MIN_CODE (charset
))
640 this_from
= CHARSET_MIN_CODE (charset
);
641 if (this_to
> CHARSET_MAX_CODE (charset
))
642 this_to
= CHARSET_MAX_CODE (charset
);
643 map_charset_chars (c_function
, function
, arg
, charset
, from
, to
);
648 DEFUN ("map-charset-chars", Fmap_charset_chars
, Smap_charset_chars
, 2, 5, 0,
649 doc
: /* Call FUNCTION for all characters in CHARSET.
650 FUNCTION is called with an argument RANGE and the optional 3rd
653 RANGE is a cons (FROM . TO), where FROM and TO indicate a range of
654 characters contained in CHARSET.
656 The optional 4th and 5th arguments FROM-CODE and TO-CODE specify the
657 range of code points of target characters. */)
658 (function
, charset
, arg
, from_code
, to_code
)
659 Lisp_Object function
, charset
, arg
, from_code
, to_code
;
664 CHECK_CHARSET_GET_CHARSET (charset
, cs
);
665 if (NILP (from_code
))
666 from
= CHARSET_MIN_CODE (cs
);
669 CHECK_NATNUM (from_code
);
670 from
= XINT (from_code
);
671 if (from
< CHARSET_MIN_CODE (cs
))
672 from
= CHARSET_MIN_CODE (cs
);
675 to
= CHARSET_MAX_CODE (cs
);
678 CHECK_NATNUM (to_code
);
680 if (to
> CHARSET_MAX_CODE (cs
))
681 to
= CHARSET_MAX_CODE (cs
);
683 map_charset_chars (NULL
, function
, arg
, cs
, from
, to
);
688 /* Define a charset according to the arguments. The Nth argument is
689 the Nth attribute of the charset (the last attribute `charset-id'
690 is not included). See the docstring of `define-charset' for the
693 DEFUN ("define-charset-internal", Fdefine_charset_internal
,
694 Sdefine_charset_internal
, charset_arg_max
, MANY
, 0,
695 doc
: /* For internal use only.
696 usage: (define-charset-internal ...) */)
701 /* Charset attr vector. */
705 struct Lisp_Hash_Table
*hash_table
= XHASH_TABLE (Vcharset_hash_table
);
707 struct charset charset
;
710 int new_definition_p
;
713 if (nargs
!= charset_arg_max
)
714 return Fsignal (Qwrong_number_of_arguments
,
715 Fcons (intern ("define-charset-internal"),
716 make_number (nargs
)));
718 attrs
= Fmake_vector (make_number (charset_attr_max
), Qnil
);
720 CHECK_SYMBOL (args
[charset_arg_name
]);
721 ASET (attrs
, charset_name
, args
[charset_arg_name
]);
723 val
= args
[charset_arg_code_space
];
724 for (i
= 0, dimension
= 0, nchars
= 1; i
< 4; i
++)
726 int min_byte
, max_byte
;
728 min_byte
= XINT (Faref (val
, make_number (i
* 2)));
729 max_byte
= XINT (Faref (val
, make_number (i
* 2 + 1)));
730 if (min_byte
< 0 || min_byte
> max_byte
|| max_byte
>= 256)
731 error ("Invalid :code-space value");
732 charset
.code_space
[i
* 4] = min_byte
;
733 charset
.code_space
[i
* 4 + 1] = max_byte
;
734 charset
.code_space
[i
* 4 + 2] = max_byte
- min_byte
+ 1;
735 nchars
*= charset
.code_space
[i
* 4 + 2];
736 charset
.code_space
[i
* 4 + 3] = nchars
;
741 val
= args
[charset_arg_dimension
];
743 charset
.dimension
= dimension
;
747 charset
.dimension
= XINT (val
);
748 if (charset
.dimension
< 1 || charset
.dimension
> 4)
749 args_out_of_range_3 (val
, make_number (1), make_number (4));
752 charset
.code_linear_p
753 = (charset
.dimension
== 1
754 || (charset
.code_space
[2] == 256
755 && (charset
.dimension
== 2
756 || (charset
.code_space
[6] == 256
757 && (charset
.dimension
== 3
758 || charset
.code_space
[10] == 256)))));
760 if (! charset
.code_linear_p
)
762 charset
.code_space_mask
= (unsigned char *) xmalloc (256);
763 bzero (charset
.code_space_mask
, 256);
764 for (i
= 0; i
< 4; i
++)
765 for (j
= charset
.code_space
[i
* 4]; j
<= charset
.code_space
[i
* 4 + 1];
767 charset
.code_space_mask
[j
] |= (1 << i
);
770 charset
.iso_chars_96
= charset
.code_space
[2] == 96;
772 charset
.min_code
= (charset
.code_space
[0]
773 | (charset
.code_space
[4] << 8)
774 | (charset
.code_space
[8] << 16)
775 | (charset
.code_space
[12] << 24));
776 charset
.max_code
= (charset
.code_space
[1]
777 | (charset
.code_space
[5] << 8)
778 | (charset
.code_space
[9] << 16)
779 | (charset
.code_space
[13] << 24));
780 charset
.char_index_offset
= 0;
782 val
= args
[charset_arg_min_code
];
792 CHECK_NUMBER_CAR (val
);
793 CHECK_NUMBER_CDR (val
);
794 code
= (XINT (XCAR (val
)) << 16) | (XINT (XCDR (val
)));
796 if (code
< charset
.min_code
797 || code
> charset
.max_code
)
798 args_out_of_range_3 (make_number (charset
.min_code
),
799 make_number (charset
.max_code
), val
);
800 charset
.char_index_offset
= CODE_POINT_TO_INDEX (&charset
, code
);
801 charset
.min_code
= code
;
804 val
= args
[charset_arg_max_code
];
814 CHECK_NUMBER_CAR (val
);
815 CHECK_NUMBER_CDR (val
);
816 code
= (XINT (XCAR (val
)) << 16) | (XINT (XCDR (val
)));
818 if (code
< charset
.min_code
819 || code
> charset
.max_code
)
820 args_out_of_range_3 (make_number (charset
.min_code
),
821 make_number (charset
.max_code
), val
);
822 charset
.max_code
= code
;
825 charset
.compact_codes_p
= charset
.max_code
< 0x1000000;
827 val
= args
[charset_arg_invalid_code
];
830 if (charset
.min_code
> 0)
831 charset
.invalid_code
= 0;
834 XSETINT (val
, charset
.max_code
+ 1);
835 if (XINT (val
) == charset
.max_code
+ 1)
836 charset
.invalid_code
= charset
.max_code
+ 1;
838 error ("Attribute :invalid-code must be specified");
844 charset
.invalid_code
= XFASTINT (val
);
847 val
= args
[charset_arg_iso_final
];
849 charset
.iso_final
= -1;
853 if (XINT (val
) < '0' || XINT (val
) > 127)
854 error ("Invalid iso-final-char: %d", XINT (val
));
855 charset
.iso_final
= XINT (val
);
858 val
= args
[charset_arg_iso_revision
];
860 charset
.iso_revision
= -1;
865 args_out_of_range (make_number (63), val
);
866 charset
.iso_revision
= XINT (val
);
869 val
= args
[charset_arg_emacs_mule_id
];
871 charset
.emacs_mule_id
= -1;
875 if ((XINT (val
) > 0 && XINT (val
) <= 128) || XINT (val
) >= 256)
876 error ("Invalid emacs-mule-id: %d", XINT (val
));
877 charset
.emacs_mule_id
= XINT (val
);
880 charset
.ascii_compatible_p
= ! NILP (args
[charset_arg_ascii_compatible_p
]);
882 charset
.supplementary_p
= ! NILP (args
[charset_arg_supplementary_p
]);
884 charset
.unified_p
= 0;
886 bzero (charset
.fast_map
, sizeof (charset
.fast_map
));
888 if (! NILP (args
[charset_arg_code_offset
]))
890 val
= args
[charset_arg_code_offset
];
893 charset
.method
= CHARSET_METHOD_OFFSET
;
894 charset
.code_offset
= XINT (val
);
896 i
= CODE_POINT_TO_INDEX (&charset
, charset
.min_code
);
897 charset
.min_char
= i
+ charset
.code_offset
;
898 i
= CODE_POINT_TO_INDEX (&charset
, charset
.max_code
);
899 charset
.max_char
= i
+ charset
.code_offset
;
900 if (charset
.max_char
> MAX_CHAR
)
901 error ("Unsupported max char: %d", charset
.max_char
);
903 i
= (charset
.min_char
>> 7) << 7;
904 for (; i
< 0x10000 && i
<= charset
.max_char
; i
+= 128)
905 CHARSET_FAST_MAP_SET (i
, charset
.fast_map
);
907 for (; i
<= charset
.max_char
; i
+= 0x1000)
908 CHARSET_FAST_MAP_SET (i
, charset
.fast_map
);
910 else if (! NILP (args
[charset_arg_map
]))
912 val
= args
[charset_arg_map
];
913 ASET (attrs
, charset_map
, val
);
915 load_charset_map_from_file (&charset
, val
, 0);
917 load_charset_map_from_vector (&charset
, val
, 0);
918 charset
.method
= CHARSET_METHOD_MAP_DEFERRED
;
920 else if (! NILP (args
[charset_arg_subset
]))
923 Lisp_Object parent_min_code
, parent_max_code
, parent_code_offset
;
924 struct charset
*parent_charset
;
926 val
= args
[charset_arg_subset
];
928 CHECK_CHARSET_GET_CHARSET (parent
, parent_charset
);
929 parent_min_code
= Fnth (make_number (1), val
);
930 CHECK_NATNUM (parent_min_code
);
931 parent_max_code
= Fnth (make_number (2), val
);
932 CHECK_NATNUM (parent_max_code
);
933 parent_code_offset
= Fnth (make_number (3), val
);
934 CHECK_NUMBER (parent_code_offset
);
935 val
= Fmake_vector (make_number (4), Qnil
);
936 ASET (val
, 0, make_number (parent_charset
->id
));
937 ASET (val
, 1, parent_min_code
);
938 ASET (val
, 2, parent_max_code
);
939 ASET (val
, 3, parent_code_offset
);
940 ASET (attrs
, charset_subset
, val
);
942 charset
.method
= CHARSET_METHOD_SUBSET
;
943 /* Here, we just copy the parent's fast_map. It's not accurate,
944 but at least it works for quickly detecting which character
945 DOESN'T belong to this charset. */
946 for (i
= 0; i
< 190; i
++)
947 charset
.fast_map
[i
] = parent_charset
->fast_map
[i
];
949 /* We also copy these for parents. */
950 charset
.min_char
= parent_charset
->min_char
;
951 charset
.max_char
= parent_charset
->max_char
;
953 else if (! NILP (args
[charset_arg_superset
]))
955 val
= args
[charset_arg_superset
];
956 charset
.method
= CHARSET_METHOD_SUPERSET
;
957 val
= Fcopy_sequence (val
);
958 ASET (attrs
, charset_superset
, val
);
960 charset
.min_char
= MAX_CHAR
;
961 charset
.max_char
= 0;
962 for (; ! NILP (val
); val
= Fcdr (val
))
964 Lisp_Object elt
, car_part
, cdr_part
;
966 struct charset
*this_charset
;
971 car_part
= XCAR (elt
);
972 cdr_part
= XCDR (elt
);
973 CHECK_CHARSET_GET_ID (car_part
, this_id
);
974 CHECK_NUMBER (cdr_part
);
975 offset
= XINT (cdr_part
);
979 CHECK_CHARSET_GET_ID (elt
, this_id
);
982 XSETCAR (val
, Fcons (make_number (this_id
), make_number (offset
)));
984 this_charset
= CHARSET_FROM_ID (this_id
);
985 if (charset
.min_char
> this_charset
->min_char
)
986 charset
.min_char
= this_charset
->min_char
;
987 if (charset
.max_char
< this_charset
->max_char
)
988 charset
.max_char
= this_charset
->max_char
;
989 for (i
= 0; i
< 190; i
++)
990 charset
.fast_map
[i
] |= this_charset
->fast_map
[i
];
994 error ("None of :code-offset, :map, :parents are specified");
996 val
= args
[charset_arg_unify_map
];
997 if (! NILP (val
) && !STRINGP (val
))
999 ASET (attrs
, charset_unify_map
, val
);
1001 CHECK_LIST (args
[charset_arg_plist
]);
1002 ASET (attrs
, charset_plist
, args
[charset_arg_plist
]);
1004 charset
.hash_index
= hash_lookup (hash_table
, args
[charset_arg_name
],
1006 if (charset
.hash_index
>= 0)
1008 new_definition_p
= 0;
1009 id
= XFASTINT (CHARSET_SYMBOL_ID (args
[charset_arg_name
]));
1010 HASH_VALUE (hash_table
, charset
.hash_index
) = attrs
;
1014 charset
.hash_index
= hash_put (hash_table
, args
[charset_arg_name
], attrs
,
1016 if (charset_table_used
== charset_table_size
)
1018 struct charset
*new_table
1019 = (struct charset
*) xmalloc (sizeof (struct charset
)
1020 * (charset_table_size
+ 16));
1021 bcopy (charset_table
, new_table
,
1022 sizeof (struct charset
) * charset_table_size
);
1023 charset_table_size
+= 16;
1024 charset_table
= new_table
;
1026 id
= charset_table_used
++;
1027 new_definition_p
= 1;
1030 ASET (attrs
, charset_id
, make_number (id
));
1032 charset_table
[id
] = charset
;
1034 if (charset
.iso_final
>= 0)
1036 ISO_CHARSET_TABLE (charset
.dimension
, charset
.iso_chars_96
,
1037 charset
.iso_final
) = id
;
1038 if (new_definition_p
)
1039 Viso_2022_charset_list
= nconc2 (Viso_2022_charset_list
,
1040 Fcons (make_number (id
), Qnil
));
1041 if (ISO_CHARSET_TABLE (1, 0, 'J') == id
)
1042 charset_jisx0201_roman
= id
;
1043 else if (ISO_CHARSET_TABLE (2, 0, '@') == id
)
1044 charset_jisx0208_1978
= id
;
1045 else if (ISO_CHARSET_TABLE (2, 0, 'B') == id
)
1046 charset_jisx0208
= id
;
1049 if (charset
.emacs_mule_id
>= 0)
1051 emacs_mule_charset
[charset
.emacs_mule_id
] = CHARSET_FROM_ID (id
);
1052 if (charset
.emacs_mule_id
< 0xA0)
1053 emacs_mule_bytes
[charset
.emacs_mule_id
] = charset
.dimension
+ 1;
1054 if (new_definition_p
)
1055 Vemacs_mule_charset_list
= nconc2 (Vemacs_mule_charset_list
,
1056 Fcons (make_number (id
), Qnil
));
1059 if (new_definition_p
)
1061 Vcharset_list
= Fcons (args
[charset_arg_name
], Vcharset_list
);
1062 Vcharset_ordered_list
= nconc2 (Vcharset_ordered_list
,
1063 Fcons (make_number (id
), Qnil
));
1064 charset_ordered_list_tick
++;
1071 /* Same as Fdefine_charset_internal but arguments are more convenient
1072 to call from C (typically in syms_of_charset). This can define a
1073 charset of `offset' method only. Return the ID of the new
1077 define_charset_internal (name
, dimension
, code_space
, min_code
, max_code
,
1078 iso_final
, iso_revision
, emacs_mule_id
,
1079 ascii_compatible
, supplementary
,
1083 unsigned char *code_space
;
1084 unsigned min_code
, max_code
;
1085 int iso_final
, iso_revision
, emacs_mule_id
;
1086 int ascii_compatible
, supplementary
;
1089 Lisp_Object args
[charset_arg_max
];
1090 Lisp_Object plist
[14];
1094 args
[charset_arg_name
] = name
;
1095 args
[charset_arg_dimension
] = make_number (dimension
);
1096 val
= Fmake_vector (make_number (8), make_number (0));
1097 for (i
= 0; i
< 8; i
++)
1098 ASET (val
, i
, make_number (code_space
[i
]));
1099 args
[charset_arg_code_space
] = val
;
1100 args
[charset_arg_min_code
] = make_number (min_code
);
1101 args
[charset_arg_max_code
] = make_number (max_code
);
1102 args
[charset_arg_iso_final
]
1103 = (iso_final
< 0 ? Qnil
: make_number (iso_final
));
1104 args
[charset_arg_iso_revision
] = make_number (iso_revision
);
1105 args
[charset_arg_emacs_mule_id
]
1106 = (emacs_mule_id
< 0 ? Qnil
: make_number (emacs_mule_id
));
1107 args
[charset_arg_ascii_compatible_p
] = ascii_compatible
? Qt
: Qnil
;
1108 args
[charset_arg_supplementary_p
] = supplementary
? Qt
: Qnil
;
1109 args
[charset_arg_invalid_code
] = Qnil
;
1110 args
[charset_arg_code_offset
] = make_number (code_offset
);
1111 args
[charset_arg_map
] = Qnil
;
1112 args
[charset_arg_subset
] = Qnil
;
1113 args
[charset_arg_superset
] = Qnil
;
1114 args
[charset_arg_unify_map
] = Qnil
;
1116 plist
[0] = intern (":name");
1117 plist
[1] = args
[charset_arg_name
];
1118 plist
[2] = intern (":dimension");
1119 plist
[3] = args
[charset_arg_dimension
];
1120 plist
[4] = intern (":code-space");
1121 plist
[5] = args
[charset_arg_code_space
];
1122 plist
[6] = intern (":iso-final-char");
1123 plist
[7] = args
[charset_arg_iso_final
];
1124 plist
[8] = intern (":emacs-mule-id");
1125 plist
[9] = args
[charset_arg_emacs_mule_id
];
1126 plist
[10] = intern (":ascii-compatible-p");
1127 plist
[11] = args
[charset_arg_ascii_compatible_p
];
1128 plist
[12] = intern (":code-offset");
1129 plist
[13] = args
[charset_arg_code_offset
];
1131 args
[charset_arg_plist
] = Flist (14, plist
);
1132 Fdefine_charset_internal (charset_arg_max
, args
);
1134 return XINT (CHARSET_SYMBOL_ID (name
));
1138 DEFUN ("define-charset-alias", Fdefine_charset_alias
,
1139 Sdefine_charset_alias
, 2, 2, 0,
1140 doc
: /* Define ALIAS as an alias for charset CHARSET. */)
1142 Lisp_Object alias
, charset
;
1146 CHECK_CHARSET_GET_ATTR (charset
, attr
);
1147 Fputhash (alias
, attr
, Vcharset_hash_table
);
1148 Vcharset_list
= Fcons (alias
, Vcharset_list
);
1153 DEFUN ("unibyte-charset", Funibyte_charset
, Sunibyte_charset
, 0, 0, 0,
1154 doc
: /* Return the unibyte charset (set by `set-unibyte-charset'). */)
1157 return CHARSET_NAME (CHARSET_FROM_ID (charset_unibyte
));
1161 DEFUN ("set-unibyte-charset", Fset_unibyte_charset
, Sset_unibyte_charset
,
1163 doc
: /* Set the unibyte charset to CHARSET.
1164 This determines how unibyte/multibyte conversion is done. See also
1165 function `unibyte-charset'. */)
1167 Lisp_Object charset
;
1172 CHECK_CHARSET_GET_CHARSET (charset
, cs
);
1173 if (! cs
->ascii_compatible_p
1174 || cs
->dimension
!= 1)
1175 error ("Inappropriate unibyte charset: %s", SDATA (SYMBOL_NAME (charset
)));
1176 charset_unibyte
= cs
->id
;
1177 for (i
= 128; i
< 256; i
++)
1179 c
= DECODE_CHAR (cs
, i
);
1180 unibyte_to_multibyte_table
[i
] = (c
< 0 ? BYTE8_TO_CHAR (i
) : c
);
1187 DEFUN ("charset-plist", Fcharset_plist
, Scharset_plist
, 1, 1, 0,
1188 doc
: /* Return the property list of CHARSET. */)
1190 Lisp_Object charset
;
1194 CHECK_CHARSET_GET_ATTR (charset
, attrs
);
1195 return CHARSET_ATTR_PLIST (attrs
);
1199 DEFUN ("set-charset-plist", Fset_charset_plist
, Sset_charset_plist
, 2, 2, 0,
1200 doc
: /* Set CHARSET's property list to PLIST. */)
1202 Lisp_Object charset
, plist
;
1206 CHECK_CHARSET_GET_ATTR (charset
, attrs
);
1207 CHARSET_ATTR_PLIST (attrs
) = plist
;
1212 DEFUN ("unify-charset", Funify_charset
, Sunify_charset
, 1, 3, 0,
1213 doc
: /* Unify characters of CHARSET with Unicode.
1214 This means reading the relevant file and installing the table defined
1215 by CHARSET's `:unify-map' property.
1217 Optional second arg UNIFY-MAP is a file name string or a vector. It has
1218 the same meaning as the `:unify-map' attribute in the function
1219 `define-charset' (which see).
1221 Optional third argument DEUNIFY, if non-nil, means to de-unify CHARSET. */)
1222 (charset
, unify_map
, deunify
)
1223 Lisp_Object charset
, unify_map
, deunify
;
1228 CHECK_CHARSET_GET_ID (charset
, id
);
1229 cs
= CHARSET_FROM_ID (id
);
1230 if (CHARSET_METHOD (cs
) == CHARSET_METHOD_MAP_DEFERRED
)
1233 ? CHARSET_UNIFIED_P (cs
) && ! NILP (CHARSET_DEUNIFIER (cs
))
1234 : ! CHARSET_UNIFIED_P (cs
))
1237 CHARSET_UNIFIED_P (cs
) = 0;
1240 if (CHARSET_METHOD (cs
) != CHARSET_METHOD_OFFSET
)
1241 error ("Can't unify charset: %s", SDATA (SYMBOL_NAME (charset
)));
1242 if (NILP (unify_map
))
1243 unify_map
= CHARSET_UNIFY_MAP (cs
);
1244 if (STRINGP (unify_map
))
1245 load_charset_map_from_file (cs
, unify_map
, 2);
1246 else if (VECTORP (unify_map
))
1247 load_charset_map_from_vector (cs
, unify_map
, 2);
1248 else if (NILP (unify_map
))
1249 error ("No unify-map for charset");
1251 error ("Bad unify-map arg");
1252 CHARSET_UNIFIED_P (cs
) = 1;
1254 else if (CHAR_TABLE_P (Vchar_unify_table
))
1256 int min_code
= CHARSET_MIN_CODE (cs
);
1257 int max_code
= CHARSET_MAX_CODE (cs
);
1258 int min_char
= DECODE_CHAR (cs
, min_code
);
1259 int max_char
= DECODE_CHAR (cs
, max_code
);
1261 char_table_set_range (Vchar_unify_table
, min_char
, max_char
, Qnil
);
1267 DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char
,
1268 Sget_unused_iso_final_char
, 2, 2, 0,
1270 Return an unsed ISO final char for a charset of DIMENISION and CHARS.
1271 DIMENSION is the number of bytes to represent a character: 1 or 2.
1272 CHARS is the number of characters in a dimension: 94 or 96.
1274 This final char is for private use, thus the range is `0' (48) .. `?' (63).
1275 If there's no unused final char for the specified kind of charset,
1278 Lisp_Object dimension
, chars
;
1282 CHECK_NUMBER (dimension
);
1283 CHECK_NUMBER (chars
);
1284 if (XINT (dimension
) != 1 && XINT (dimension
) != 2 && XINT (dimension
) != 3)
1285 args_out_of_range_3 (dimension
, make_number (1), make_number (3));
1286 if (XINT (chars
) != 94 && XINT (chars
) != 96)
1287 args_out_of_range_3 (chars
, make_number (94), make_number (96));
1288 for (final_char
= '0'; final_char
<= '?'; final_char
++)
1289 if (ISO_CHARSET_TABLE (XINT (dimension
), XINT (chars
), final_char
) < 0)
1291 return (final_char
<= '?' ? make_number (final_char
) : Qnil
);
1295 check_iso_charset_parameter (dimension
, chars
, final_char
)
1296 Lisp_Object dimension
, chars
, final_char
;
1298 CHECK_NATNUM (dimension
);
1299 CHECK_NATNUM (chars
);
1300 CHECK_NATNUM (final_char
);
1302 if (XINT (dimension
) > 3)
1303 error ("Invalid DIMENSION %d, it should be 1, 2, or 3", XINT (dimension
));
1304 if (XINT (chars
) != 94 && XINT (chars
) != 96)
1305 error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars
));
1306 if (XINT (final_char
) < '0' || XINT (final_char
) > '~')
1307 error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars
));
1311 DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset
, Sdeclare_equiv_charset
,
1314 Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.
1315 CHARSET should be defined by `define-charset' in advance. */)
1316 (dimension
, chars
, final_char
, charset
)
1317 Lisp_Object dimension
, chars
, final_char
, charset
;
1321 CHECK_CHARSET_GET_ID (charset
, id
);
1322 check_iso_charset_parameter (dimension
, chars
, final_char
);
1324 ISO_CHARSET_TABLE (XINT (dimension
), XINT (chars
), XINT (final_char
)) = id
;
1329 /* Return information about charsets in the text at PTR of NBYTES
1330 bytes, which are NCHARS characters. The value is:
1332 0: Each character is represented by one byte. This is always
1333 true for a unibyte string. For a multibyte string, true if
1334 it contains only ASCII characters.
1336 1: No charsets other than ascii, control-1, and latin-1 are
1343 string_xstring_p (string
)
1346 const unsigned char *p
= SDATA (string
);
1347 const unsigned char *endp
= p
+ SBYTES (string
);
1349 if (SCHARS (string
) == SBYTES (string
))
1354 int c
= STRING_CHAR_ADVANCE (p
);
1363 /* Find charsets in the string at PTR of NCHARS and NBYTES.
1365 CHARSETS is a vector. If Nth element is non-nil, it means the
1366 charset whose id is N is already found.
1368 It may lookup a translation table TABLE if supplied. */
1371 find_charsets_in_text (ptr
, nchars
, nbytes
, charsets
, table
, multibyte
)
1372 const unsigned char *ptr
;
1373 EMACS_INT nchars
, nbytes
;
1374 Lisp_Object charsets
, table
;
1377 const unsigned char *pend
= ptr
+ nbytes
;
1379 if (nchars
== nbytes
)
1382 ASET (charsets
, charset_ascii
, Qt
);
1389 c
= translate_char (table
, c
);
1390 if (ASCII_BYTE_P (c
))
1391 ASET (charsets
, charset_ascii
, Qt
);
1393 ASET (charsets
, charset_eight_bit
, Qt
);
1400 int c
= STRING_CHAR_ADVANCE (ptr
);
1401 struct charset
*charset
;
1404 c
= translate_char (table
, c
);
1405 charset
= CHAR_CHARSET (c
);
1406 ASET (charsets
, CHARSET_ID (charset
), Qt
);
1411 DEFUN ("find-charset-region", Ffind_charset_region
, Sfind_charset_region
,
1413 doc
: /* Return a list of charsets in the region between BEG and END.
1414 BEG and END are buffer positions.
1415 Optional arg TABLE if non-nil is a translation table to look up.
1417 If the current buffer is unibyte, the returned list may contain
1418 only `ascii', `eight-bit-control', and `eight-bit-graphic'. */)
1420 Lisp_Object beg
, end
, table
;
1422 Lisp_Object charsets
;
1423 EMACS_INT from
, from_byte
, to
, stop
, stop_byte
;
1426 int multibyte
= ! NILP (current_buffer
->enable_multibyte_characters
);
1428 validate_region (&beg
, &end
);
1429 from
= XFASTINT (beg
);
1430 stop
= to
= XFASTINT (end
);
1432 if (from
< GPT
&& GPT
< to
)
1435 stop_byte
= GPT_BYTE
;
1438 stop_byte
= CHAR_TO_BYTE (stop
);
1440 from_byte
= CHAR_TO_BYTE (from
);
1442 charsets
= Fmake_vector (make_number (charset_table_used
), Qnil
);
1445 find_charsets_in_text (BYTE_POS_ADDR (from_byte
), stop
- from
,
1446 stop_byte
- from_byte
, charsets
, table
,
1450 from
= stop
, from_byte
= stop_byte
;
1451 stop
= to
, stop_byte
= CHAR_TO_BYTE (stop
);
1458 for (i
= charset_table_used
- 1; i
>= 0; i
--)
1459 if (!NILP (AREF (charsets
, i
)))
1460 val
= Fcons (CHARSET_NAME (charset_table
+ i
), val
);
1464 DEFUN ("find-charset-string", Ffind_charset_string
, Sfind_charset_string
,
1466 doc
: /* Return a list of charsets in STR.
1467 Optional arg TABLE if non-nil is a translation table to look up.
1469 If STR is unibyte, the returned list may contain
1470 only `ascii', `eight-bit-control', and `eight-bit-graphic'. */)
1472 Lisp_Object str
, table
;
1474 Lisp_Object charsets
;
1480 charsets
= Fmake_vector (make_number (charset_table_used
), Qnil
);
1481 find_charsets_in_text (SDATA (str
), SCHARS (str
), SBYTES (str
),
1483 STRING_MULTIBYTE (str
));
1485 for (i
= charset_table_used
- 1; i
>= 0; i
--)
1486 if (!NILP (AREF (charsets
, i
)))
1487 val
= Fcons (CHARSET_NAME (charset_table
+ i
), val
);
1493 /* Return a character correponding to the code-point CODE of
1497 decode_char (charset
, code
)
1498 struct charset
*charset
;
1502 enum charset_method method
= CHARSET_METHOD (charset
);
1504 if (code
< CHARSET_MIN_CODE (charset
) || code
> CHARSET_MAX_CODE (charset
))
1507 if (method
== CHARSET_METHOD_MAP_DEFERRED
)
1509 load_charset (charset
);
1510 method
= CHARSET_METHOD (charset
);
1513 if (method
== CHARSET_METHOD_SUBSET
)
1515 Lisp_Object subset_info
;
1517 subset_info
= CHARSET_SUBSET (charset
);
1518 charset
= CHARSET_FROM_ID (XFASTINT (AREF (subset_info
, 0)));
1519 code
-= XINT (AREF (subset_info
, 3));
1520 if (code
< XFASTINT (AREF (subset_info
, 1))
1521 || code
> XFASTINT (AREF (subset_info
, 2)))
1524 c
= DECODE_CHAR (charset
, code
);
1526 else if (method
== CHARSET_METHOD_SUPERSET
)
1528 Lisp_Object parents
;
1530 parents
= CHARSET_SUPERSET (charset
);
1532 for (; CONSP (parents
); parents
= XCDR (parents
))
1534 int id
= XINT (XCAR (XCAR (parents
)));
1535 int code_offset
= XINT (XCDR (XCAR (parents
)));
1536 unsigned this_code
= code
- code_offset
;
1538 charset
= CHARSET_FROM_ID (id
);
1539 if ((c
= DECODE_CHAR (charset
, this_code
)) >= 0)
1545 char_index
= CODE_POINT_TO_INDEX (charset
, code
);
1549 if (method
== CHARSET_METHOD_MAP
)
1551 Lisp_Object decoder
;
1553 decoder
= CHARSET_DECODER (charset
);
1554 if (! VECTORP (decoder
))
1556 c
= XINT (AREF (decoder
, char_index
));
1560 c
= char_index
+ CHARSET_CODE_OFFSET (charset
);
1564 if (CHARSET_UNIFIED_P (charset
)
1567 MAYBE_UNIFY_CHAR (c
);
1573 /* Variable used temporarily by the macro ENCODE_CHAR. */
1574 Lisp_Object charset_work
;
1576 /* Return a code-point of CHAR in CHARSET. If CHAR doesn't belong to
1577 CHARSET, return CHARSET_INVALID_CODE (CHARSET). If STRICT is true,
1578 use CHARSET's strict_max_char instead of max_char. */
1581 encode_char (charset
, c
)
1582 struct charset
*charset
;
1586 enum charset_method method
= CHARSET_METHOD (charset
);
1588 if (CHARSET_UNIFIED_P (charset
))
1590 Lisp_Object deunifier
, deunified
;
1592 deunifier
= CHARSET_DEUNIFIER (charset
);
1593 if (! CHAR_TABLE_P (deunifier
))
1595 Funify_charset (CHARSET_NAME (charset
), Qnil
, Qnil
);
1596 deunifier
= CHARSET_DEUNIFIER (charset
);
1598 deunified
= CHAR_TABLE_REF (deunifier
, c
);
1599 if (! NILP (deunified
))
1600 c
= XINT (deunified
);
1603 if (method
== CHARSET_METHOD_SUBSET
)
1605 Lisp_Object subset_info
;
1606 struct charset
*this_charset
;
1608 subset_info
= CHARSET_SUBSET (charset
);
1609 this_charset
= CHARSET_FROM_ID (XFASTINT (AREF (subset_info
, 0)));
1610 code
= ENCODE_CHAR (this_charset
, c
);
1611 if (code
== CHARSET_INVALID_CODE (this_charset
)
1612 || code
< XFASTINT (AREF (subset_info
, 1))
1613 || code
> XFASTINT (AREF (subset_info
, 2)))
1614 return CHARSET_INVALID_CODE (charset
);
1615 code
+= XINT (AREF (subset_info
, 3));
1619 if (method
== CHARSET_METHOD_SUPERSET
)
1621 Lisp_Object parents
;
1623 parents
= CHARSET_SUPERSET (charset
);
1624 for (; CONSP (parents
); parents
= XCDR (parents
))
1626 int id
= XINT (XCAR (XCAR (parents
)));
1627 int code_offset
= XINT (XCDR (XCAR (parents
)));
1628 struct charset
*this_charset
= CHARSET_FROM_ID (id
);
1630 code
= ENCODE_CHAR (this_charset
, c
);
1631 if (code
!= CHARSET_INVALID_CODE (this_charset
))
1632 return code
+ code_offset
;
1634 return CHARSET_INVALID_CODE (charset
);
1637 if (! CHARSET_FAST_MAP_REF ((c
), charset
->fast_map
)
1638 || c
< CHARSET_MIN_CHAR (charset
) || c
> CHARSET_MAX_CHAR (charset
))
1639 return CHARSET_INVALID_CODE (charset
);
1641 if (method
== CHARSET_METHOD_MAP_DEFERRED
)
1643 load_charset (charset
);
1644 method
= CHARSET_METHOD (charset
);
1647 if (method
== CHARSET_METHOD_MAP
)
1649 Lisp_Object encoder
;
1652 encoder
= CHARSET_ENCODER (charset
);
1653 if (! CHAR_TABLE_P (CHARSET_ENCODER (charset
)))
1654 return CHARSET_INVALID_CODE (charset
);
1655 val
= CHAR_TABLE_REF (encoder
, c
);
1657 return CHARSET_INVALID_CODE (charset
);
1659 if (! CHARSET_COMPACT_CODES_P (charset
))
1660 code
= INDEX_TO_CODE_POINT (charset
, code
);
1662 else /* method == CHARSET_METHOD_OFFSET */
1664 code
= c
- CHARSET_CODE_OFFSET (charset
);
1665 code
= INDEX_TO_CODE_POINT (charset
, code
);
1672 DEFUN ("decode-char", Fdecode_char
, Sdecode_char
, 2, 3, 0,
1673 doc
: /* Decode the pair of CHARSET and CODE-POINT into a character.
1674 Return nil if CODE-POINT is not valid in CHARSET.
1676 CODE-POINT may be a cons (HIGHER-16-BIT-VALUE . LOWER-16-BIT-VALUE).
1678 Optional argument RESTRICTION specifies a way to map the pair of CCS
1679 and CODE-POINT to a chracter. Currently not supported and just ignored. */)
1680 (charset
, code_point
, restriction
)
1681 Lisp_Object charset
, code_point
, restriction
;
1685 struct charset
*charsetp
;
1687 CHECK_CHARSET_GET_ID (charset
, id
);
1688 if (CONSP (code_point
))
1690 CHECK_NATNUM_CAR (code_point
);
1691 CHECK_NATNUM_CDR (code_point
);
1692 code
= (XINT (XCAR (code_point
)) << 16) | (XINT (XCDR (code_point
)));
1696 CHECK_NATNUM (code_point
);
1697 code
= XINT (code_point
);
1699 charsetp
= CHARSET_FROM_ID (id
);
1700 c
= DECODE_CHAR (charsetp
, code
);
1701 return (c
>= 0 ? make_number (c
) : Qnil
);
1705 DEFUN ("encode-char", Fencode_char
, Sencode_char
, 2, 3, 0,
1706 doc
: /* Encode the character CH into a code-point of CHARSET.
1707 Return nil if CHARSET doesn't include CH.
1709 Optional argument RESTRICTION specifies a way to map CHAR to a
1710 code-point in CCS. Currently not supported and just ignored. */)
1711 (ch
, charset
, restriction
)
1712 Lisp_Object ch
, charset
, restriction
;
1716 struct charset
*charsetp
;
1718 CHECK_CHARSET_GET_ID (charset
, id
);
1720 charsetp
= CHARSET_FROM_ID (id
);
1721 code
= ENCODE_CHAR (charsetp
, XINT (ch
));
1722 if (code
== CHARSET_INVALID_CODE (charsetp
))
1724 if (code
> 0x7FFFFFF)
1725 return Fcons (make_number (code
>> 16), make_number (code
& 0xFFFF));
1726 return make_number (code
);
1730 DEFUN ("make-char", Fmake_char
, Smake_char
, 1, 5, 0,
1732 /* Return a character of CHARSET whose position codes are CODEn.
1734 CODE1 through CODE4 are optional, but if you don't supply sufficient
1735 position codes, it is assumed that the minimum code in each dimension
1737 (charset
, code1
, code2
, code3
, code4
)
1738 Lisp_Object charset
, code1
, code2
, code3
, code4
;
1741 struct charset
*charsetp
;
1745 CHECK_CHARSET_GET_ID (charset
, id
);
1746 charsetp
= CHARSET_FROM_ID (id
);
1748 dimension
= CHARSET_DIMENSION (charsetp
);
1750 code
= (CHARSET_ASCII_COMPATIBLE_P (charsetp
)
1751 ? 0 : CHARSET_MIN_CODE (charsetp
));
1754 CHECK_NATNUM (code1
);
1755 if (XFASTINT (code1
) >= 0x100)
1756 args_out_of_range (make_number (0xFF), code1
);
1757 code
= XFASTINT (code1
);
1763 code
|= charsetp
->code_space
[(dimension
- 2) * 4];
1766 CHECK_NATNUM (code2
);
1767 if (XFASTINT (code2
) >= 0x100)
1768 args_out_of_range (make_number (0xFF), code2
);
1769 code
|= XFASTINT (code2
);
1776 code
|= charsetp
->code_space
[(dimension
- 3) * 4];
1779 CHECK_NATNUM (code3
);
1780 if (XFASTINT (code3
) >= 0x100)
1781 args_out_of_range (make_number (0xFF), code3
);
1782 code
|= XFASTINT (code3
);
1789 code
|= charsetp
->code_space
[0];
1792 CHECK_NATNUM (code4
);
1793 if (XFASTINT (code4
) >= 0x100)
1794 args_out_of_range (make_number (0xFF), code4
);
1795 code
|= XFASTINT (code4
);
1802 if (CHARSET_ISO_FINAL (charsetp
) >= 0)
1804 c
= DECODE_CHAR (charsetp
, code
);
1806 error ("Invalid code(s)");
1807 return make_number (c
);
1811 /* Return the first charset in CHARSET_LIST that contains C.
1812 CHARSET_LIST is a list of charset IDs. If it is nil, use
1813 Vcharset_ordered_list. */
1816 char_charset (c
, charset_list
, code_return
)
1818 Lisp_Object charset_list
;
1819 unsigned *code_return
;
1821 if (NILP (charset_list
))
1822 charset_list
= Vcharset_ordered_list
;
1824 while (CONSP (charset_list
))
1826 struct charset
*charset
= CHARSET_FROM_ID (XINT (XCAR (charset_list
)));
1827 unsigned code
= ENCODE_CHAR (charset
, c
);
1829 if (code
!= CHARSET_INVALID_CODE (charset
))
1832 *code_return
= code
;
1835 charset_list
= XCDR (charset_list
);
1841 DEFUN ("split-char", Fsplit_char
, Ssplit_char
, 1, 1, 0,
1843 /*Return list of charset and one to four position-codes of CHAR.
1844 The charset is decided by the current priority order of charsets.
1845 A position-code is a byte value of each dimension of the code-point of
1846 CHAR in the charset. */)
1850 struct charset
*charset
;
1855 CHECK_CHARACTER (ch
);
1857 charset
= CHAR_CHARSET (c
);
1860 code
= ENCODE_CHAR (charset
, c
);
1861 if (code
== CHARSET_INVALID_CODE (charset
))
1863 dimension
= CHARSET_DIMENSION (charset
);
1864 for (val
= Qnil
; dimension
> 0; dimension
--)
1866 val
= Fcons (make_number (code
& 0xFF), val
);
1869 return Fcons (CHARSET_NAME (charset
), val
);
1873 DEFUN ("char-charset", Fchar_charset
, Schar_charset
, 1, 1, 0,
1874 doc
: /* Return the charset of highest priority that contains CHAR. */)
1878 struct charset
*charset
;
1880 CHECK_CHARACTER (ch
);
1881 charset
= CHAR_CHARSET (XINT (ch
));
1882 return (CHARSET_NAME (charset
));
1886 DEFUN ("charset-after", Fcharset_after
, Scharset_after
, 0, 1, 0,
1888 Return charset of a character in the current buffer at position POS.
1889 If POS is nil, it defauls to the current point.
1890 If POS is out of range, the value is nil. */)
1895 struct charset
*charset
;
1897 ch
= Fchar_after (pos
);
1898 if (! INTEGERP (ch
))
1900 charset
= CHAR_CHARSET (XINT (ch
));
1901 return (CHARSET_NAME (charset
));
1905 DEFUN ("iso-charset", Fiso_charset
, Siso_charset
, 3, 3, 0,
1907 Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.
1909 ISO 2022's designation sequence (escape sequence) distinguishes charsets
1910 by their DIMENSION, CHARS, and FINAL-CHAR,
1911 where as Emacs distinguishes them by charset symbol.
1912 See the documentation of the function `charset-info' for the meanings of
1913 DIMENSION, CHARS, and FINAL-CHAR. */)
1914 (dimension
, chars
, final_char
)
1915 Lisp_Object dimension
, chars
, final_char
;
1919 check_iso_charset_parameter (dimension
, chars
, final_char
);
1920 id
= ISO_CHARSET_TABLE (XFASTINT (dimension
), XFASTINT (chars
),
1921 XFASTINT (final_char
));
1922 return (id
>= 0 ? CHARSET_NAME (CHARSET_FROM_ID (id
)) : Qnil
);
1926 DEFUN ("clear-charset-maps", Fclear_charset_maps
, Sclear_charset_maps
,
1929 Clear encoder and decoder of charsets that are loaded from mapfiles. */)
1933 struct charset
*charset
;
1936 for (i
= 0; i
< charset_table_used
; i
++)
1938 charset
= CHARSET_FROM_ID (i
);
1939 attrs
= CHARSET_ATTRIBUTES (charset
);
1941 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP
)
1943 CHARSET_ATTR_DECODER (attrs
) = Qnil
;
1944 CHARSET_ATTR_ENCODER (attrs
) = Qnil
;
1945 CHARSET_METHOD (charset
) = CHARSET_METHOD_MAP_DEFERRED
;
1948 if (CHARSET_UNIFIED_P (charset
))
1949 CHARSET_ATTR_DEUNIFIER (attrs
) = Qnil
;
1952 if (CHAR_TABLE_P (Vchar_unified_charset_table
))
1954 Foptimize_char_table (Vchar_unified_charset_table
);
1955 Vchar_unify_table
= Vchar_unified_charset_table
;
1956 Vchar_unified_charset_table
= Qnil
;
1962 DEFUN ("charset-priority-list", Fcharset_priority_list
,
1963 Scharset_priority_list
, 0, 1, 0,
1964 doc
: /* Return the list of charsets ordered by priority.
1965 HIGHESTP non-nil means just return the highest priority one. */)
1967 Lisp_Object highestp
;
1969 Lisp_Object val
= Qnil
, list
= Vcharset_ordered_list
;
1971 if (!NILP (highestp
))
1972 return CHARSET_NAME (CHARSET_FROM_ID (XINT (Fcar (list
))));
1974 while (!NILP (list
))
1976 val
= Fcons (CHARSET_NAME (CHARSET_FROM_ID (XINT (XCAR (list
)))), val
);
1979 return Fnreverse (val
);
1982 DEFUN ("set-charset-priority", Fset_charset_priority
, Sset_charset_priority
,
1984 doc
: /* Assign higher priority to the charsets given as arguments.
1985 usage: (set-charset-priority &rest charsets) */)
1990 Lisp_Object new_head
, old_list
, arglist
[2];
1991 Lisp_Object list_2022
, list_emacs_mule
;
1994 old_list
= Fcopy_sequence (Vcharset_ordered_list
);
1996 for (i
= 0; i
< nargs
; i
++)
1998 CHECK_CHARSET_GET_ID (args
[i
], id
);
1999 if (! NILP (Fmemq (make_number (id
), old_list
)))
2001 old_list
= Fdelq (make_number (id
), old_list
);
2002 new_head
= Fcons (make_number (id
), new_head
);
2005 arglist
[0] = Fnreverse (new_head
);
2006 arglist
[1] = old_list
;
2007 Vcharset_ordered_list
= Fnconc (2, arglist
);
2008 charset_ordered_list_tick
++;
2010 for (old_list
= Vcharset_ordered_list
, list_2022
= list_emacs_mule
= Qnil
;
2011 CONSP (old_list
); old_list
= XCDR (old_list
))
2013 if (! NILP (Fmemq (XCAR (old_list
), Viso_2022_charset_list
)))
2014 list_2022
= Fcons (XCAR (old_list
), list_2022
);
2015 if (! NILP (Fmemq (XCAR (old_list
), Vemacs_mule_charset_list
)))
2016 list_emacs_mule
= Fcons (XCAR (old_list
), list_emacs_mule
);
2018 Viso_2022_charset_list
= Fnreverse (list_2022
);
2019 Vemacs_mule_charset_list
= Fnreverse (list_emacs_mule
);
2024 DEFUN ("charset-id-internal", Fcharset_id_internal
, Scharset_id_internal
,
2026 doc
: /* Internal use only.
2027 Return charset identification number of CHARSET. */)
2029 Lisp_Object charset
;
2033 CHECK_CHARSET_GET_ID (charset
, id
);
2034 return make_number (id
);
2046 init_charset_once ()
2050 for (i
= 0; i
< ISO_MAX_DIMENSION
; i
++)
2051 for (j
= 0; j
< ISO_MAX_CHARS
; j
++)
2052 for (k
= 0; k
< ISO_MAX_FINAL
; k
++)
2053 iso_charset_table
[i
][j
][k
] = -1;
2055 for (i
= 0; i
< 256; i
++)
2056 emacs_mule_charset
[i
] = NULL
;
2058 charset_jisx0201_roman
= -1;
2059 charset_jisx0208_1978
= -1;
2060 charset_jisx0208
= -1;
2062 for (i
= 0; i
< 128; i
++)
2063 unibyte_to_multibyte_table
[i
] = i
;
2064 for (; i
< 256; i
++)
2065 unibyte_to_multibyte_table
[i
] = BYTE8_TO_CHAR (i
);
2073 DEFSYM (Qcharsetp
, "charsetp");
2075 DEFSYM (Qascii
, "ascii");
2076 DEFSYM (Qunicode
, "unicode");
2077 DEFSYM (Qeight_bit
, "eight-bit");
2078 DEFSYM (Qiso_8859_1
, "iso-8859-1");
2083 staticpro (&Vcharset_ordered_list
);
2084 Vcharset_ordered_list
= Qnil
;
2086 staticpro (&Viso_2022_charset_list
);
2087 Viso_2022_charset_list
= Qnil
;
2089 staticpro (&Vemacs_mule_charset_list
);
2090 Vemacs_mule_charset_list
= Qnil
;
2092 staticpro (&Vcharset_hash_table
);
2094 Lisp_Object args
[2];
2097 Vcharset_hash_table
= Fmake_hash_table (2, args
);
2100 charset_table_size
= 128;
2101 charset_table
= ((struct charset
*)
2102 xmalloc (sizeof (struct charset
) * charset_table_size
));
2103 charset_table_used
= 0;
2105 staticpro (&Vchar_unified_charset_table
);
2106 Vchar_unified_charset_table
= Fmake_char_table (Qnil
, make_number (-1));
2108 defsubr (&Scharsetp
);
2109 defsubr (&Smap_charset_chars
);
2110 defsubr (&Sdefine_charset_internal
);
2111 defsubr (&Sdefine_charset_alias
);
2112 defsubr (&Sunibyte_charset
);
2113 defsubr (&Sset_unibyte_charset
);
2114 defsubr (&Scharset_plist
);
2115 defsubr (&Sset_charset_plist
);
2116 defsubr (&Sunify_charset
);
2117 defsubr (&Sget_unused_iso_final_char
);
2118 defsubr (&Sdeclare_equiv_charset
);
2119 defsubr (&Sfind_charset_region
);
2120 defsubr (&Sfind_charset_string
);
2121 defsubr (&Sdecode_char
);
2122 defsubr (&Sencode_char
);
2123 defsubr (&Ssplit_char
);
2124 defsubr (&Smake_char
);
2125 defsubr (&Schar_charset
);
2126 defsubr (&Scharset_after
);
2127 defsubr (&Siso_charset
);
2128 defsubr (&Sclear_charset_maps
);
2129 defsubr (&Scharset_priority_list
);
2130 defsubr (&Sset_charset_priority
);
2131 defsubr (&Scharset_id_internal
);
2133 DEFVAR_LISP ("charset-map-directory", &Vcharset_map_directory
,
2134 doc
: /* Directory of charset map files that come with GNU Emacs.
2135 The default value is sub-directory "charsets" of `data-directory'. */);
2136 Vcharset_map_directory
= Fexpand_file_name (build_string ("charsets"),
2139 DEFVAR_LISP ("charset-list", &Vcharset_list
,
2140 doc
: /* List of all charsets ever defined. */);
2141 Vcharset_list
= Qnil
;
2144 = define_charset_internal (Qascii
, 1, "\x00\x7F\x00\x00\x00\x00",
2145 0, 127, 'B', -1, 0, 1, 0, 0);
2147 = define_charset_internal (Qiso_8859_1
, 1, "\x00\xFF\x00\x00\x00\x00",
2148 0, 255, -1, -1, -1, 1, 0, 0);
2150 = define_charset_internal (Qunicode
, 3, "\x00\xFF\x00\xFF\x00\x10",
2151 0, MAX_UNICODE_CHAR
, -1, 0, -1, 1, 0, 0);
2153 = define_charset_internal (Qeight_bit
, 1, "\x80\xFF\x00\x00\x00\x00",
2154 128, 255, -1, 0, -1, 0, 0,
2155 MAX_5_BYTE_CHAR
+ 1);