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.
5 Copyright (C) 2001, 2002
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 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 /* The primary charset. It is a 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 CHAR_TABLE_SET (table
, from_c
, make_number (code
));
277 if (from_index
== to_index
)
279 from_index
++, from_c
++;
280 code
= INDEX_TO_CODE_POINT (charset
, from_index
);
283 for (; from_index
<= to_index
; from_index
++, from_c
++)
285 ASET (vec
, from_index
, make_number (from_c
));
286 CHAR_TABLE_SET (table
, from_c
, make_number (from_index
));
292 unsigned code
= from
;
296 int c1
= DECODE_CHAR (charset
, code
);
300 CHAR_TABLE_SET (table
, from_c
, make_number (c1
));
301 CHAR_TABLE_SET (Vchar_unify_table
, c1
, make_number (from_c
));
302 if (CHAR_TABLE_P (Vchar_unified_charset_table
))
303 CHAR_TABLE_SET (Vchar_unified_charset_table
, c1
,
304 CHARSET_NAME (charset
));
306 if (from_index
== to_index
)
308 from_index
++, from_c
++;
309 code
= INDEX_TO_CODE_POINT (charset
, from_index
);
314 if (control_flag
< 2)
316 CHARSET_MIN_CHAR (charset
) = (ascii_compatible_p
317 ? nonascii_min_char
: min_char
);
318 CHARSET_MAX_CHAR (charset
) = max_char
;
319 if (control_flag
== 1)
321 CHARSET_DECODER (charset
) = vec
;
322 CHARSET_ENCODER (charset
) = table
;
326 CHARSET_DEUNIFIER (charset
) = table
;
330 /* Read a hexadecimal number (preceded by "0x") from the file FP while
331 paying attention to comment charcter '#'. */
333 static INLINE
unsigned
341 while ((c
= getc (fp
)) != EOF
)
345 while ((c
= getc (fp
)) != EOF
&& c
!= '\n');
349 if ((c
= getc (fp
)) == EOF
|| c
== 'x')
361 while ((c
= getc (fp
)) != EOF
&& isxdigit (c
))
363 | (c
<= '9' ? c
- '0' : c
<= 'F' ? c
- 'A' + 10 : c
- 'a' + 10));
365 while ((c
= getc (fp
)) != EOF
&& isdigit (c
))
366 n
= (n
* 10) + c
- '0';
373 /* Return a mapping vector for CHARSET loaded from MAPFILE.
374 Each line of MAPFILE has this form
376 where 0xAAAA is a code-point and 0xCCCC is the corresponding
377 character code, or this form
379 where 0xAAAA and 0xBBBB are code-points specifying a range, and
380 0xCCCC is the first character code of the range.
382 The returned vector has this form:
383 [ CODE1 CHAR1 CODE2 CHAR2 .... ]
384 where CODE1 is a code-point or a cons of code-points specifying a
387 extern void add_to_log
P_ ((char *, Lisp_Object
, Lisp_Object
));
390 load_charset_map_from_file (charset
, mapfile
, control_flag
)
391 struct charset
*charset
;
395 unsigned min_code
= CHARSET_MIN_CODE (charset
);
396 unsigned max_code
= CHARSET_MAX_CODE (charset
);
400 Lisp_Object suffixes
;
401 struct charset_map_entries
*head
, *entries
;
404 suffixes
= Fcons (build_string (".map"),
405 Fcons (build_string (".TXT"), Qnil
));
407 fd
= openp (Fcons (Vcharset_map_directory
, Qnil
), mapfile
, suffixes
,
410 || ! (fp
= fdopen (fd
, "r")))
412 add_to_log ("Failure in loading charset map: %S", mapfile
, Qnil
);
416 head
= entries
= ((struct charset_map_entries
*)
417 alloca (sizeof (struct charset_map_entries
)));
426 from
= read_hex (fp
, &eof
);
429 if (getc (fp
) == '-')
430 to
= read_hex (fp
, &eof
);
433 c
= (int) read_hex (fp
, &eof
);
435 if (from
< min_code
|| to
> max_code
|| from
> to
|| c
> MAX_CHAR
)
438 if (n_entries
> 0 && (n_entries
% 0x10000) == 0)
440 entries
->next
= ((struct charset_map_entries
*)
441 alloca (sizeof (struct charset_map_entries
)));
442 entries
= entries
->next
;
444 idx
= n_entries
% 0x10000;
445 entries
->entry
[idx
].from
= from
;
446 entries
->entry
[idx
].to
= to
;
447 entries
->entry
[idx
].c
= c
;
453 load_charset_map (charset
, head
, n_entries
, control_flag
);
457 load_charset_map_from_vector (charset
, vec
, control_flag
)
458 struct charset
*charset
;
462 unsigned min_code
= CHARSET_MIN_CODE (charset
);
463 unsigned max_code
= CHARSET_MAX_CODE (charset
);
464 struct charset_map_entries
*head
, *entries
;
466 int len
= ASIZE (vec
);
471 add_to_log ("Failure in loading charset map: %V", vec
, Qnil
);
475 head
= entries
= ((struct charset_map_entries
*)
476 alloca (sizeof (struct charset_map_entries
)));
478 for (i
= 0; i
< len
; i
+= 2)
480 Lisp_Object val
, val2
;
492 from
= XFASTINT (val
);
493 to
= XFASTINT (val2
);
498 from
= to
= XFASTINT (val
);
500 val
= AREF (vec
, i
+ 1);
504 if (from
< min_code
|| to
> max_code
|| from
> to
|| c
> MAX_CHAR
)
507 if ((n_entries
% 0x10000) == 0)
509 entries
->next
= ((struct charset_map_entries
*)
510 alloca (sizeof (struct charset_map_entries
)));
511 entries
= entries
->next
;
513 idx
= n_entries
% 0x10000;
514 entries
->entry
[idx
].from
= from
;
515 entries
->entry
[idx
].to
= to
;
516 entries
->entry
[idx
].c
= c
;
520 load_charset_map (charset
, head
, n_entries
, control_flag
);
524 load_charset (charset
)
525 struct charset
*charset
;
527 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP_DEFERRED
)
531 map
= CHARSET_MAP (charset
);
533 load_charset_map_from_file (charset
, map
, 1);
535 load_charset_map_from_vector (charset
, map
, 1);
536 CHARSET_METHOD (charset
) = CHARSET_METHOD_MAP
;
541 DEFUN ("charsetp", Fcharsetp
, Scharsetp
, 1, 1, 0,
542 doc
: /* Return non-nil if and only if OBJECT is a charset.*/)
546 return (CHARSETP (object
) ? Qt
: Qnil
);
551 map_charset_chars (c_function
, function
, arg
,
553 void (*c_function
) P_ ((Lisp_Object
, Lisp_Object
));
554 Lisp_Object function
, arg
;
555 struct charset
*charset
;
562 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP_DEFERRED
)
563 load_charset (charset
);
565 partial
= (from
> CHARSET_MIN_CODE (charset
)
566 || to
< CHARSET_MAX_CODE (charset
));
568 if (CHARSET_UNIFIED_P (charset
)
569 && CHAR_TABLE_P (CHARSET_DEUNIFIER (charset
)))
571 map_char_table_for_charset (c_function
, function
,
572 CHARSET_DEUNIFIER (charset
), arg
,
573 partial
? charset
: NULL
, from
, to
);
576 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_OFFSET
)
578 int from_idx
= CODE_POINT_TO_INDEX (charset
, from
);
579 int to_idx
= CODE_POINT_TO_INDEX (charset
, to
);
580 int from_c
= from_idx
+ CHARSET_CODE_OFFSET (charset
);
581 int to_c
= to_idx
+ CHARSET_CODE_OFFSET (charset
);
583 range
= Fcons (make_number (from_c
), make_number (to_c
));
585 (*c_function
) (range
, arg
);
587 call2 (function
, range
, arg
);
589 else if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP
)
591 if (! CHAR_TABLE_P (CHARSET_ENCODER (charset
)))
593 if (CHARSET_ASCII_COMPATIBLE_P (charset
) && from
<= 127)
595 range
= Fcons (make_number (from
), make_number (to
));
597 XSETCAR (range
, make_number (127));
600 (*c_function
) (range
, arg
);
602 call2 (function
, range
, arg
);
604 map_char_table_for_charset (c_function
, function
,
605 CHARSET_ENCODER (charset
), arg
,
606 partial
? charset
: NULL
, from
, to
);
608 else if (CHARSET_METHOD (charset
) == CHARSET_METHOD_SUBSET
)
610 Lisp_Object subset_info
;
613 subset_info
= CHARSET_SUBSET (charset
);
614 charset
= CHARSET_FROM_ID (XFASTINT (AREF (subset_info
, 0)));
615 offset
= XINT (AREF (subset_info
, 3));
617 if (from
< XFASTINT (AREF (subset_info
, 1)))
618 from
= XFASTINT (AREF (subset_info
, 1));
620 if (to
> XFASTINT (AREF (subset_info
, 2)))
621 to
= XFASTINT (AREF (subset_info
, 2));
622 map_charset_chars (c_function
, function
, arg
, charset
, from
, to
);
624 else /* i.e. CHARSET_METHOD_SUPERSET */
628 for (parents
= CHARSET_SUPERSET (charset
); CONSP (parents
);
629 parents
= XCDR (parents
))
632 unsigned this_from
, this_to
;
634 charset
= CHARSET_FROM_ID (XFASTINT (XCAR (XCAR (parents
))));
635 offset
= XINT (XCDR (XCAR (parents
)));
636 this_from
= from
- offset
;
637 this_to
= to
- offset
;
638 if (this_from
< CHARSET_MIN_CODE (charset
))
639 this_from
= CHARSET_MIN_CODE (charset
);
640 if (this_to
> CHARSET_MAX_CODE (charset
))
641 this_to
= CHARSET_MAX_CODE (charset
);
642 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 targer 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 (XCAR (val
));
793 CHECK_NUMBER (XCDR (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 (XCAR (val
));
815 CHECK_NUMBER (XCDR (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 for (i
= charset
.min_char
; i
< 0x10000 && i
<= charset
.max_char
;
905 CHARSET_FAST_MAP_SET (i
, charset
.fast_map
);
906 for (; i
<= charset
.max_char
; i
+= 0x1000)
907 CHARSET_FAST_MAP_SET (i
, charset
.fast_map
);
909 else if (! NILP (args
[charset_arg_map
]))
911 val
= args
[charset_arg_map
];
912 ASET (attrs
, charset_map
, val
);
914 load_charset_map_from_file (&charset
, val
, 0);
916 load_charset_map_from_vector (&charset
, val
, 0);
917 charset
.method
= CHARSET_METHOD_MAP_DEFERRED
;
919 else if (! NILP (args
[charset_arg_subset
]))
922 Lisp_Object parent_min_code
, parent_max_code
, parent_code_offset
;
923 struct charset
*parent_charset
;
925 val
= args
[charset_arg_subset
];
927 CHECK_CHARSET_GET_CHARSET (parent
, parent_charset
);
928 parent_min_code
= Fnth (make_number (1), val
);
929 CHECK_NATNUM (parent_min_code
);
930 parent_max_code
= Fnth (make_number (2), val
);
931 CHECK_NATNUM (parent_max_code
);
932 parent_code_offset
= Fnth (make_number (3), val
);
933 CHECK_NUMBER (parent_code_offset
);
934 val
= Fmake_vector (make_number (4), Qnil
);
935 ASET (val
, 0, make_number (parent_charset
->id
));
936 ASET (val
, 1, parent_min_code
);
937 ASET (val
, 2, parent_max_code
);
938 ASET (val
, 3, parent_code_offset
);
939 ASET (attrs
, charset_subset
, val
);
941 charset
.method
= CHARSET_METHOD_SUBSET
;
942 /* Here, we just copy the parent's fast_map. It's not accurate,
943 but at least it works for quickly detecting which character
944 DOESN'T belong to this charset. */
945 for (i
= 0; i
< 190; i
++)
946 charset
.fast_map
[i
] = parent_charset
->fast_map
[i
];
948 /* We also copy these for parents. */
949 charset
.min_char
= parent_charset
->min_char
;
950 charset
.max_char
= parent_charset
->max_char
;
952 else if (! NILP (args
[charset_arg_superset
]))
954 val
= args
[charset_arg_superset
];
955 charset
.method
= CHARSET_METHOD_SUPERSET
;
956 val
= Fcopy_sequence (val
);
957 ASET (attrs
, charset_superset
, val
);
959 charset
.min_char
= MAX_CHAR
;
960 charset
.max_char
= 0;
961 for (; ! NILP (val
); val
= Fcdr (val
))
963 Lisp_Object elt
, car_part
, cdr_part
;
965 struct charset
*this_charset
;
970 car_part
= XCAR (elt
);
971 cdr_part
= XCDR (elt
);
972 CHECK_CHARSET_GET_ID (car_part
, this_id
);
973 CHECK_NUMBER (cdr_part
);
974 offset
= XINT (cdr_part
);
978 CHECK_CHARSET_GET_ID (elt
, this_id
);
981 XSETCAR (val
, Fcons (make_number (this_id
), make_number (offset
)));
983 this_charset
= CHARSET_FROM_ID (this_id
);
984 if (charset
.min_char
> this_charset
->min_char
)
985 charset
.min_char
= this_charset
->min_char
;
986 if (charset
.max_char
< this_charset
->max_char
)
987 charset
.max_char
= this_charset
->max_char
;
988 for (i
= 0; i
< 190; i
++)
989 charset
.fast_map
[i
] |= this_charset
->fast_map
[i
];
993 error ("None of :code-offset, :map, :parents are specified");
995 val
= args
[charset_arg_unify_map
];
996 if (! NILP (val
) && !STRINGP (val
))
998 ASET (attrs
, charset_unify_map
, val
);
1000 CHECK_LIST (args
[charset_arg_plist
]);
1001 ASET (attrs
, charset_plist
, args
[charset_arg_plist
]);
1003 charset
.hash_index
= hash_lookup (hash_table
, args
[charset_arg_name
],
1005 if (charset
.hash_index
>= 0)
1007 new_definition_p
= 0;
1008 id
= XFASTINT (CHARSET_SYMBOL_ID (args
[charset_arg_name
]));
1009 HASH_VALUE (hash_table
, charset
.hash_index
) = attrs
;
1013 charset
.hash_index
= hash_put (hash_table
, args
[charset_arg_name
], attrs
,
1015 if (charset_table_used
== charset_table_size
)
1017 struct charset
*new_table
1018 = (struct charset
*) xmalloc (sizeof (struct charset
)
1019 * (charset_table_size
+ 16));
1020 bcopy (charset_table
, new_table
,
1021 sizeof (struct charset
) * charset_table_size
);
1022 charset_table_size
+= 16;
1023 charset_table
= new_table
;
1025 id
= charset_table_used
++;
1026 new_definition_p
= 1;
1029 ASET (attrs
, charset_id
, make_number (id
));
1031 charset_table
[id
] = charset
;
1033 if (charset
.iso_final
>= 0)
1035 ISO_CHARSET_TABLE (charset
.dimension
, charset
.iso_chars_96
,
1036 charset
.iso_final
) = id
;
1037 if (new_definition_p
)
1038 Viso_2022_charset_list
= nconc2 (Viso_2022_charset_list
,
1039 Fcons (make_number (id
), Qnil
));
1040 if (ISO_CHARSET_TABLE (1, 0, 'J') == id
)
1041 charset_jisx0201_roman
= id
;
1042 else if (ISO_CHARSET_TABLE (2, 0, '@') == id
)
1043 charset_jisx0208_1978
= id
;
1044 else if (ISO_CHARSET_TABLE (2, 0, 'B') == id
)
1045 charset_jisx0208
= id
;
1048 if (charset
.emacs_mule_id
>= 0)
1050 emacs_mule_charset
[charset
.emacs_mule_id
] = CHARSET_FROM_ID (id
);
1051 if (charset
.emacs_mule_id
< 0xA0)
1052 emacs_mule_bytes
[charset
.emacs_mule_id
] = charset
.dimension
+ 1;
1053 if (new_definition_p
)
1054 Vemacs_mule_charset_list
= nconc2 (Vemacs_mule_charset_list
,
1055 Fcons (make_number (id
), Qnil
));
1058 if (new_definition_p
)
1060 Vcharset_list
= Fcons (args
[charset_arg_name
], Vcharset_list
);
1061 Vcharset_ordered_list
= nconc2 (Vcharset_ordered_list
,
1062 Fcons (make_number (id
), Qnil
));
1063 charset_ordered_list_tick
++;
1070 /* Same as Fdefine_charset_internal but arguments are more convenient
1071 to call from C (typically in syms_of_charset). This can define a
1072 charset of `offset' method only. Return the ID of the new
1076 define_charset_internal (name
, dimension
, code_space
, min_code
, max_code
,
1077 iso_final
, iso_revision
, emacs_mule_id
,
1078 ascii_compatible
, supprementary
,
1082 unsigned char *code_space
;
1083 unsigned min_code
, max_code
;
1084 int iso_final
, iso_revision
, emacs_mule_id
;
1085 int ascii_compatible
, supprementary
;
1088 Lisp_Object args
[charset_arg_max
];
1089 Lisp_Object plist
[14];
1093 args
[charset_arg_name
] = name
;
1094 args
[charset_arg_dimension
] = make_number (dimension
);
1095 val
= Fmake_vector (make_number (8), make_number (0));
1096 for (i
= 0; i
< 8; i
++)
1097 ASET (val
, i
, make_number (code_space
[i
]));
1098 args
[charset_arg_code_space
] = val
;
1099 args
[charset_arg_min_code
] = make_number (min_code
);
1100 args
[charset_arg_max_code
] = make_number (max_code
);
1101 args
[charset_arg_iso_final
]
1102 = (iso_final
< 0 ? Qnil
: make_number (iso_final
));
1103 args
[charset_arg_iso_revision
] = make_number (iso_revision
);
1104 args
[charset_arg_emacs_mule_id
]
1105 = (emacs_mule_id
< 0 ? Qnil
: make_number (emacs_mule_id
));
1106 args
[charset_arg_ascii_compatible_p
] = ascii_compatible
? Qt
: Qnil
;
1107 args
[charset_arg_supplementary_p
] = supprementary
? Qt
: Qnil
;
1108 args
[charset_arg_invalid_code
] = Qnil
;
1109 args
[charset_arg_code_offset
] = make_number (code_offset
);
1110 args
[charset_arg_map
] = Qnil
;
1111 args
[charset_arg_subset
] = Qnil
;
1112 args
[charset_arg_superset
] = Qnil
;
1113 args
[charset_arg_unify_map
] = Qnil
;
1115 plist
[0] = intern (":name");
1116 plist
[1] = args
[charset_arg_name
];
1117 plist
[2] = intern (":dimension");
1118 plist
[3] = args
[charset_arg_dimension
];
1119 plist
[4] = intern (":code-space");
1120 plist
[5] = args
[charset_arg_code_space
];
1121 plist
[6] = intern (":iso-final-char");
1122 plist
[7] = args
[charset_arg_iso_final
];
1123 plist
[8] = intern (":emacs-mule-id");
1124 plist
[9] = args
[charset_arg_emacs_mule_id
];
1125 plist
[10] = intern (":ascii-compatible-p");
1126 plist
[11] = args
[charset_arg_ascii_compatible_p
];
1127 plist
[12] = intern (":code-offset");
1128 plist
[13] = args
[charset_arg_code_offset
];
1130 args
[charset_arg_plist
] = Flist (14, plist
);
1131 Fdefine_charset_internal (charset_arg_max
, args
);
1133 return XINT (CHARSET_SYMBOL_ID (name
));
1137 DEFUN ("define-charset-alias", Fdefine_charset_alias
,
1138 Sdefine_charset_alias
, 2, 2, 0,
1139 doc
: /* Define ALIAS as an alias for charset CHARSET. */)
1141 Lisp_Object alias
, charset
;
1145 CHECK_CHARSET_GET_ATTR (charset
, attr
);
1146 Fputhash (alias
, attr
, Vcharset_hash_table
);
1147 Vcharset_list
= Fcons (alias
, Vcharset_list
);
1152 DEFUN ("primary-charset", Fprimary_charset
, Sprimary_charset
, 0, 0, 0,
1153 doc
: /* Return the primary charset (set by `set-primary-charset'). */)
1156 return CHARSET_NAME (CHARSET_FROM_ID (charset_primary
));
1160 DEFUN ("set-primary-charset", Fset_primary_charset
, Sset_primary_charset
,
1162 doc
: /* Set the primary charset to CHARSET.
1163 This determines how unibyte/multibyte conversion is done. See also
1164 function `primary-charset'. */)
1166 Lisp_Object charset
;
1170 CHECK_CHARSET_GET_ID (charset
, id
);
1171 charset_primary
= id
;
1176 DEFUN ("charset-plist", Fcharset_plist
, Scharset_plist
, 1, 1, 0,
1177 doc
: /* Return the property list of CHARSET. */)
1179 Lisp_Object charset
;
1183 CHECK_CHARSET_GET_ATTR (charset
, attrs
);
1184 return CHARSET_ATTR_PLIST (attrs
);
1188 DEFUN ("set-charset-plist", Fset_charset_plist
, Sset_charset_plist
, 2, 2, 0,
1189 doc
: /* Set CHARSET's property list to PLIST. */)
1191 Lisp_Object charset
, plist
;
1195 CHECK_CHARSET_GET_ATTR (charset
, attrs
);
1196 CHARSET_ATTR_PLIST (attrs
) = plist
;
1201 DEFUN ("unify-charset", Funify_charset
, Sunify_charset
, 1, 3, 0,
1202 doc
: /* Unify characters of CHARSET with Unicode.
1203 This means reading the relevant file and installing the table defined
1204 by CHARSET's `:unify-map' property.
1206 Optional second arg UNIFY-MAP is a file name string or a vector. It has
1207 the same meaning as the `:unify-map' attribute in the function
1208 `define-charset' (which see).
1210 Optional third argument DEUNIFY, if non-nil, means to de-unify CHARSET. */)
1211 (charset
, unify_map
, deunify
)
1212 Lisp_Object charset
, unify_map
, deunify
;
1217 CHECK_CHARSET_GET_ID (charset
, id
);
1218 cs
= CHARSET_FROM_ID (id
);
1219 if (CHARSET_METHOD (cs
) == CHARSET_METHOD_MAP_DEFERRED
)
1222 ? CHARSET_UNIFIED_P (cs
) && ! NILP (CHARSET_DEUNIFIER (cs
))
1223 : ! CHARSET_UNIFIED_P (cs
))
1226 CHARSET_UNIFIED_P (cs
) = 0;
1229 if (CHARSET_METHOD (cs
) != CHARSET_METHOD_OFFSET
)
1230 error ("Can't unify charset: %s", XSYMBOL (charset
)->name
->data
);
1231 if (NILP (unify_map
))
1232 unify_map
= CHARSET_UNIFY_MAP (cs
);
1233 if (STRINGP (unify_map
))
1234 load_charset_map_from_file (cs
, unify_map
, 2);
1235 else if (VECTORP (unify_map
))
1236 load_charset_map_from_vector (cs
, unify_map
, 2);
1237 else if (NILP (unify_map
))
1238 error ("No unify-map for charset");
1240 error ("Bad unify-map arg");
1241 CHARSET_UNIFIED_P (cs
) = 1;
1243 else if (CHAR_TABLE_P (Vchar_unify_table
))
1245 int min_code
= CHARSET_MIN_CODE (cs
);
1246 int max_code
= CHARSET_MAX_CODE (cs
);
1247 int min_char
= DECODE_CHAR (cs
, min_code
);
1248 int max_char
= DECODE_CHAR (cs
, max_code
);
1250 char_table_set_range (Vchar_unify_table
, min_char
, max_char
, Qnil
);
1256 DEFUN ("get-unused-iso-final-char", Fget_unused_iso_final_char
,
1257 Sget_unused_iso_final_char
, 2, 2, 0,
1259 Return an unsed ISO final char for a charset of DIMENISION and CHARS.
1260 DIMENSION is the number of bytes to represent a character: 1 or 2.
1261 CHARS is the number of characters in a dimension: 94 or 96.
1263 This final char is for private use, thus the range is `0' (48) .. `?' (63).
1264 If there's no unused final char for the specified kind of charset,
1267 Lisp_Object dimension
, chars
;
1271 CHECK_NUMBER (dimension
);
1272 CHECK_NUMBER (chars
);
1273 if (XINT (dimension
) != 1 && XINT (dimension
) != 2 && XINT (dimension
) != 3)
1274 args_out_of_range_3 (dimension
, make_number (1), make_number (3));
1275 if (XINT (chars
) != 94 && XINT (chars
) != 96)
1276 args_out_of_range_3 (chars
, make_number (94), make_number (96));
1277 for (final_char
= '0'; final_char
<= '?'; final_char
++)
1278 if (ISO_CHARSET_TABLE (XINT (dimension
), XINT (chars
), final_char
) < 0)
1280 return (final_char
<= '?' ? make_number (final_char
) : Qnil
);
1284 check_iso_charset_parameter (dimension
, chars
, final_char
)
1285 Lisp_Object dimension
, chars
, final_char
;
1287 CHECK_NATNUM (dimension
);
1288 CHECK_NATNUM (chars
);
1289 CHECK_NATNUM (final_char
);
1291 if (XINT (dimension
) > 3)
1292 error ("Invalid DIMENSION %d, it should be 1, 2, or 3", XINT (dimension
));
1293 if (XINT (chars
) != 94 && XINT (chars
) != 96)
1294 error ("Invalid CHARS %d, it should be 94 or 96", XINT (chars
));
1295 if (XINT (final_char
) < '0' || XINT (final_char
) > '~')
1296 error ("Invalid FINAL-CHAR %c, it should be `0'..`~'", XINT (chars
));
1300 DEFUN ("declare-equiv-charset", Fdeclare_equiv_charset
, Sdeclare_equiv_charset
,
1303 Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.
1304 CHARSET should be defined by `define-charset' in advance. */)
1305 (dimension
, chars
, final_char
, charset
)
1306 Lisp_Object dimension
, chars
, final_char
, charset
;
1310 CHECK_CHARSET_GET_ID (charset
, id
);
1311 check_iso_charset_parameter (dimension
, chars
, final_char
);
1313 ISO_CHARSET_TABLE (XINT (dimension
), XINT (chars
), XINT (final_char
)) = id
;
1318 /* Return information about charsets in the text at PTR of NBYTES
1319 bytes, which are NCHARS characters. The value is:
1321 0: Each character is represented by one byte. This is always
1322 true for a unibyte string. For a multibyte string, true if
1323 it contains only ASCII characters.
1325 1: No charsets other than ascii, control-1, and latin-1 are
1332 string_xstring_p (string
)
1335 const unsigned char *p
= XSTRING (string
)->data
;
1336 const unsigned char *endp
= p
+ STRING_BYTES (XSTRING (string
));
1337 struct charset
*charset
;
1339 if (XSTRING (string
)->size
== STRING_BYTES (XSTRING (string
)))
1342 charset
= CHARSET_FROM_ID (charset_iso_8859_1
);
1345 int c
= STRING_CHAR_ADVANCE (p
);
1347 /* Fixme: comparison of unsigned expression < 0 is always false */
1348 if (ENCODE_CHAR (charset
, c
) < 0)
1355 /* Find charsets in the string at PTR of NCHARS and NBYTES.
1357 CHARSETS is a vector. Each element is a cons of CHARSET and
1358 FOUND-FLAG. CHARSET is a charset id, and FOUND-FLAG is nil or t.
1359 FOUND-FLAG t (or nil) means that the corresponding charset is
1360 already found (or not yet found).
1362 It may lookup a translation table TABLE if supplied. */
1365 find_charsets_in_text (ptr
, nchars
, nbytes
, charsets
, table
)
1366 const unsigned char *ptr
;
1368 Lisp_Object charsets
, table
;
1370 const unsigned char *pend
= ptr
+ nbytes
;
1371 int ncharsets
= ASIZE (charsets
);
1373 if (nchars
== nbytes
)
1378 int c
= STRING_CHAR_ADVANCE (ptr
);
1384 c
= translate_char (table
, c
);
1385 for (i
= 0; i
< ncharsets
; i
++)
1387 elt
= AREF (charsets
, i
);
1388 if (NILP (XCDR (elt
)))
1390 struct charset
*charset
= CHARSET_FROM_ID (XINT (XCAR (elt
)));
1392 if (ENCODE_CHAR (charset
, c
) != CHARSET_INVALID_CODE (charset
))
1403 /* Fixme: returns nil for unibyte. */
1404 DEFUN ("find-charset-region", Ffind_charset_region
, Sfind_charset_region
,
1406 doc
: /* Return a list of charsets in the region between BEG and END.
1407 BEG and END are buffer positions.
1408 Optional arg TABLE if non-nil is a translation table to look up.
1410 If the current buffer is unibyte, the returned list may contain
1411 only `ascii', `eight-bit-control', and `eight-bit-graphic'. */)
1413 Lisp_Object beg
, end
, table
;
1415 Lisp_Object charsets
;
1416 int from
, from_byte
, to
, stop
, stop_byte
, i
;
1419 validate_region (&beg
, &end
);
1420 from
= XFASTINT (beg
);
1421 stop
= to
= XFASTINT (end
);
1423 if (from
< GPT
&& GPT
< to
)
1426 stop_byte
= GPT_BYTE
;
1429 stop_byte
= CHAR_TO_BYTE (stop
);
1431 from_byte
= CHAR_TO_BYTE (from
);
1433 charsets
= Fmake_vector (make_number (charset_table_used
), Qnil
);
1434 for (i
= 0; i
< charset_table_used
; i
++)
1435 ASET (charsets
, i
, Fcons (make_number (i
), Qnil
));
1439 find_charsets_in_text (BYTE_POS_ADDR (from_byte
), stop
- from
,
1440 stop_byte
- from_byte
, charsets
, table
);
1443 from
= stop
, from_byte
= stop_byte
;
1444 stop
= to
, stop_byte
= CHAR_TO_BYTE (stop
);
1451 for (i
= charset_table_used
- 1; i
>= 0; i
--)
1452 if (!NILP (XCDR (AREF (charsets
, i
))))
1453 val
= Fcons (CHARSET_NAME (charset_table
+ i
), val
);
1457 /* Fixme: returns nil for unibyte. */
1458 DEFUN ("find-charset-string", Ffind_charset_string
, Sfind_charset_string
,
1460 doc
: /* Return a list of charsets in STR.
1461 Optional arg TABLE if non-nil is a translation table to look up.
1463 If STR is unibyte, the returned list may contain
1464 only `ascii', `eight-bit-control', and `eight-bit-graphic'. */)
1466 Lisp_Object str
, table
;
1468 Lisp_Object charsets
;
1474 charsets
= Fmake_vector (make_number (charset_table_used
), Qnil
);
1475 for (i
= 0; i
< charset_table_used
; i
++)
1476 ASET (charsets
, i
, Fcons (make_number (i
), Qnil
));
1477 find_charsets_in_text (XSTRING (str
)->data
, XSTRING (str
)->size
,
1478 STRING_BYTES (XSTRING (str
)), charsets
, table
);
1481 for (i
= charset_table_used
- 1; i
>= 0; i
--)
1482 if (!NILP (XCDR (AREF (charsets
, i
))))
1483 val
= Fcons (CHARSET_NAME (charset_table
+ i
), val
);
1489 /* Return a character correponding to the code-point CODE of
1493 decode_char (charset
, code
)
1494 struct charset
*charset
;
1498 enum charset_method method
= CHARSET_METHOD (charset
);
1500 if (code
< CHARSET_MIN_CODE (charset
) || code
> CHARSET_MAX_CODE (charset
))
1503 if (method
== CHARSET_METHOD_MAP_DEFERRED
)
1505 load_charset (charset
);
1506 method
= CHARSET_METHOD (charset
);
1509 if (method
== CHARSET_METHOD_SUBSET
)
1511 Lisp_Object subset_info
;
1513 subset_info
= CHARSET_SUBSET (charset
);
1514 charset
= CHARSET_FROM_ID (XFASTINT (AREF (subset_info
, 0)));
1515 code
-= XINT (AREF (subset_info
, 3));
1516 if (code
< XFASTINT (AREF (subset_info
, 1))
1517 || code
> XFASTINT (AREF (subset_info
, 2)))
1520 c
= DECODE_CHAR (charset
, code
);
1522 else if (method
== CHARSET_METHOD_SUPERSET
)
1524 Lisp_Object parents
;
1526 parents
= CHARSET_SUPERSET (charset
);
1528 for (; CONSP (parents
); parents
= XCDR (parents
))
1530 int id
= XINT (XCAR (XCAR (parents
)));
1531 int code_offset
= XINT (XCDR (XCAR (parents
)));
1532 unsigned this_code
= code
- code_offset
;
1534 charset
= CHARSET_FROM_ID (id
);
1535 if ((c
= DECODE_CHAR (charset
, this_code
)) >= 0)
1541 char_index
= CODE_POINT_TO_INDEX (charset
, code
);
1545 if (method
== CHARSET_METHOD_MAP
)
1547 Lisp_Object decoder
;
1549 decoder
= CHARSET_DECODER (charset
);
1550 if (! VECTORP (decoder
))
1552 c
= XINT (AREF (decoder
, char_index
));
1556 c
= char_index
+ CHARSET_CODE_OFFSET (charset
);
1560 if (CHARSET_UNIFIED_P (charset
)
1563 MAYBE_UNIFY_CHAR (c
);
1569 /* Variable used temporarily by the macro ENCODE_CHAR. */
1570 Lisp_Object charset_work
;
1572 /* Return a code-point of CHAR in CHARSET. If CHAR doesn't belong to
1573 CHARSET, return CHARSET_INVALID_CODE (CHARSET). If STRICT is true,
1574 use CHARSET's strict_max_char instead of max_char. */
1577 encode_char (charset
, c
)
1578 struct charset
*charset
;
1582 enum charset_method method
= CHARSET_METHOD (charset
);
1584 if (CHARSET_UNIFIED_P (charset
))
1586 Lisp_Object deunifier
, deunified
;
1588 deunifier
= CHARSET_DEUNIFIER (charset
);
1589 if (! CHAR_TABLE_P (deunifier
))
1591 Funify_charset (CHARSET_NAME (charset
), Qnil
, Qnil
);
1592 deunifier
= CHARSET_DEUNIFIER (charset
);
1594 deunified
= CHAR_TABLE_REF (deunifier
, c
);
1595 if (! NILP (deunified
))
1596 c
= XINT (deunified
);
1599 if (! CHARSET_FAST_MAP_REF ((c
), charset
->fast_map
)
1600 || c
< CHARSET_MIN_CHAR (charset
) || c
> CHARSET_MAX_CHAR (charset
))
1601 return CHARSET_INVALID_CODE (charset
);
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 (method
== CHARSET_METHOD_MAP_DEFERRED
)
1639 load_charset (charset
);
1640 method
= CHARSET_METHOD (charset
);
1643 if (method
== CHARSET_METHOD_MAP
)
1645 Lisp_Object encoder
;
1648 encoder
= CHARSET_ENCODER (charset
);
1649 if (! CHAR_TABLE_P (CHARSET_ENCODER (charset
)))
1650 return CHARSET_INVALID_CODE (charset
);
1651 val
= CHAR_TABLE_REF (encoder
, c
);
1653 return CHARSET_INVALID_CODE (charset
);
1655 if (! CHARSET_COMPACT_CODES_P (charset
))
1656 code
= INDEX_TO_CODE_POINT (charset
, code
);
1658 else /* method == CHARSET_METHOD_OFFSET */
1660 code
= c
- CHARSET_CODE_OFFSET (charset
);
1661 code
= INDEX_TO_CODE_POINT (charset
, code
);
1668 DEFUN ("decode-char", Fdecode_char
, Sdecode_char
, 2, 3, 0,
1669 doc
: /* Decode the pair of CHARSET and CODE-POINT into a character.
1670 Return nil if CODE-POINT is not valid in CHARSET.
1672 CODE-POINT may be a cons (HIGHER-16-BIT-VALUE . LOWER-16-BIT-VALUE).
1674 Optional argument RESTRICTION specifies a way to map the pair of CCS
1675 and CODE-POINT to a chracter. Currently not supported and just ignored. */)
1676 (charset
, code_point
, restriction
)
1677 Lisp_Object charset
, code_point
, restriction
;
1681 struct charset
*charsetp
;
1683 CHECK_CHARSET_GET_ID (charset
, id
);
1684 if (CONSP (code_point
))
1686 CHECK_NATNUM (XCAR (code_point
));
1687 CHECK_NATNUM (XCDR (code_point
));
1688 code
= (XINT (XCAR (code_point
)) << 16) | (XINT (XCDR (code_point
)));
1692 CHECK_NATNUM (code_point
);
1693 code
= XINT (code_point
);
1695 charsetp
= CHARSET_FROM_ID (id
);
1696 c
= DECODE_CHAR (charsetp
, code
);
1697 return (c
>= 0 ? make_number (c
) : Qnil
);
1701 DEFUN ("encode-char", Fencode_char
, Sencode_char
, 2, 3, 0,
1702 doc
: /* Encode the character CH into a code-point of CHARSET.
1703 Return nil if CHARSET doesn't include CH.
1705 Optional argument RESTRICTION specifies a way to map CHAR to a
1706 code-point in CCS. Currently not supported and just ignored. */)
1707 (ch
, charset
, restriction
)
1708 Lisp_Object ch
, charset
, restriction
;
1712 struct charset
*charsetp
;
1714 CHECK_CHARSET_GET_ID (charset
, id
);
1716 charsetp
= CHARSET_FROM_ID (id
);
1717 code
= ENCODE_CHAR (charsetp
, XINT (ch
));
1718 if (code
== CHARSET_INVALID_CODE (charsetp
))
1720 if (code
> 0x7FFFFFF)
1721 return Fcons (make_number (code
>> 16), make_number (code
& 0xFFFF));
1722 return make_number (code
);
1726 DEFUN ("make-char", Fmake_char
, Smake_char
, 1, 5, 0,
1728 /* Return a character of CHARSET whose position codes are CODEn.
1730 CODE1 through CODE4 are optional, but if you don't supply sufficient
1731 position codes, it is assumed that the minimum code in each dimension
1733 (charset
, code1
, code2
, code3
, code4
)
1734 Lisp_Object charset
, code1
, code2
, code3
, code4
;
1737 struct charset
*charsetp
;
1741 CHECK_CHARSET_GET_ID (charset
, id
);
1742 charsetp
= CHARSET_FROM_ID (id
);
1744 dimension
= CHARSET_DIMENSION (charsetp
);
1746 code
= (CHARSET_ASCII_COMPATIBLE_P (charsetp
)
1747 ? 0 : CHARSET_MIN_CODE (charsetp
));
1750 CHECK_NATNUM (code1
);
1751 if (XFASTINT (code1
) >= 0x100)
1752 args_out_of_range (make_number (0xFF), code1
);
1753 code
= XFASTINT (code1
);
1759 code
|= charsetp
->code_space
[(dimension
- 2) * 4];
1762 CHECK_NATNUM (code2
);
1763 if (XFASTINT (code2
) >= 0x100)
1764 args_out_of_range (make_number (0xFF), code2
);
1765 code
|= XFASTINT (code2
);
1772 code
|= charsetp
->code_space
[(dimension
- 3) * 4];
1775 CHECK_NATNUM (code3
);
1776 if (XFASTINT (code3
) >= 0x100)
1777 args_out_of_range (make_number (0xFF), code3
);
1778 code
|= XFASTINT (code3
);
1785 code
|= charsetp
->code_space
[0];
1788 CHECK_NATNUM (code4
);
1789 if (XFASTINT (code4
) >= 0x100)
1790 args_out_of_range (make_number (0xFF), code4
);
1791 code
|= XFASTINT (code4
);
1798 if (CHARSET_ISO_FINAL (charsetp
) >= 0)
1800 c
= DECODE_CHAR (charsetp
, code
);
1802 error ("Invalid code(s)");
1803 return make_number (c
);
1807 /* Return the first charset in CHARSET_LIST that contains C.
1808 CHARSET_LIST is a list of charset IDs. If it is nil, use
1809 Vcharset_ordered_list. */
1812 char_charset (c
, charset_list
, code_return
)
1814 Lisp_Object charset_list
;
1815 unsigned *code_return
;
1817 if (NILP (charset_list
))
1818 charset_list
= Vcharset_ordered_list
;
1820 while (CONSP (charset_list
))
1822 struct charset
*charset
= CHARSET_FROM_ID (XINT (XCAR (charset_list
)));
1823 unsigned code
= ENCODE_CHAR (charset
, c
);
1825 if (code
!= CHARSET_INVALID_CODE (charset
))
1828 *code_return
= code
;
1831 charset_list
= XCDR (charset_list
);
1837 /* Fixme: `unknown' can't happen now? */
1838 DEFUN ("split-char", Fsplit_char
, Ssplit_char
, 1, 1, 0,
1839 doc
: /*Return list of charset and one to three position-codes of CHAR.
1840 If CHAR is invalid as a character code, return a list `(unknown CHAR)'. */)
1844 struct charset
*charset
;
1849 CHECK_CHARACTER (ch
);
1851 charset
= CHAR_CHARSET (c
);
1853 return Fcons (intern ("unknown"), Fcons (ch
, Qnil
));
1855 code
= ENCODE_CHAR (charset
, c
);
1856 if (code
== CHARSET_INVALID_CODE (charset
))
1858 dimension
= CHARSET_DIMENSION (charset
);
1859 val
= (dimension
== 1 ? Fcons (make_number (code
), Qnil
)
1860 : dimension
== 2 ? Fcons (make_number (code
>> 8),
1861 Fcons (make_number (code
& 0xFF), Qnil
))
1862 : Fcons (make_number (code
>> 16),
1863 Fcons (make_number ((code
>> 8) & 0xFF),
1864 Fcons (make_number (code
& 0xFF), Qnil
))));
1865 return Fcons (CHARSET_NAME (charset
), val
);
1869 DEFUN ("char-charset", Fchar_charset
, Schar_charset
, 1, 1, 0,
1870 doc
: /* Return the charset of highest priority that contains CHAR. */)
1874 struct charset
*charset
;
1876 CHECK_CHARACTER (ch
);
1877 charset
= CHAR_CHARSET (XINT (ch
));
1878 return (CHARSET_NAME (charset
));
1882 DEFUN ("charset-after", Fcharset_after
, Scharset_after
, 0, 1, 0,
1884 Return charset of a character in the current buffer at position POS.
1885 If POS is nil, it defauls to the current point.
1886 If POS is out of range, the value is nil. */)
1891 struct charset
*charset
;
1893 ch
= Fchar_after (pos
);
1894 if (! INTEGERP (ch
))
1896 charset
= CHAR_CHARSET (XINT (ch
));
1897 return (CHARSET_NAME (charset
));
1901 DEFUN ("iso-charset", Fiso_charset
, Siso_charset
, 3, 3, 0,
1903 Return charset of ISO's specification DIMENSION, CHARS, and FINAL-CHAR.
1905 ISO 2022's designation sequence (escape sequence) distinguishes charsets
1906 by their DIMENSION, CHARS, and FINAL-CHAR,
1907 where as Emacs distinguishes them by charset symbol.
1908 See the documentation of the function `charset-info' for the meanings of
1909 DIMENSION, CHARS, and FINAL-CHAR. */)
1910 (dimension
, chars
, final_char
)
1911 Lisp_Object dimension
, chars
, final_char
;
1915 check_iso_charset_parameter (dimension
, chars
, final_char
);
1916 id
= ISO_CHARSET_TABLE (XFASTINT (dimension
), XFASTINT (chars
),
1917 XFASTINT (final_char
));
1918 return (id
>= 0 ? CHARSET_NAME (CHARSET_FROM_ID (id
)) : Qnil
);
1922 DEFUN ("clear-charset-maps", Fclear_charset_maps
, Sclear_charset_maps
,
1925 Clear encoder and decoder of charsets that are loaded from mapfiles. */)
1929 struct charset
*charset
;
1932 for (i
= 0; i
< charset_table_used
; i
++)
1934 charset
= CHARSET_FROM_ID (i
);
1935 attrs
= CHARSET_ATTRIBUTES (charset
);
1937 if (CHARSET_METHOD (charset
) == CHARSET_METHOD_MAP
)
1939 CHARSET_ATTR_DECODER (attrs
) = Qnil
;
1940 CHARSET_ATTR_ENCODER (attrs
) = Qnil
;
1941 CHARSET_METHOD (charset
) = CHARSET_METHOD_MAP_DEFERRED
;
1944 if (CHARSET_UNIFIED_P (charset
))
1945 CHARSET_ATTR_DEUNIFIER (attrs
) = Qnil
;
1948 if (CHAR_TABLE_P (Vchar_unified_charset_table
))
1950 Foptimize_char_table (Vchar_unified_charset_table
);
1951 Vchar_unify_table
= Vchar_unified_charset_table
;
1952 Vchar_unified_charset_table
= Qnil
;
1958 DEFUN ("charset-priority-list", Fcharset_priority_list
,
1959 Scharset_priority_list
, 0, 1, 0,
1960 doc
: /* Return the list of charsets ordered by priority.
1961 HIGHESTP non-nil means just return the highest priority one. */)
1963 Lisp_Object highestp
;
1965 Lisp_Object val
= Qnil
, list
= Vcharset_ordered_list
;
1967 if (!NILP (highestp
))
1968 return CHARSET_NAME (CHARSET_FROM_ID (XINT (Fcar (list
))));
1970 while (!NILP (list
))
1972 val
= Fcons (CHARSET_NAME (CHARSET_FROM_ID (XINT (XCAR (list
)))), val
);
1975 return Fnreverse (val
);
1978 DEFUN ("set-charset-priority", Fset_charset_priority
, Sset_charset_priority
,
1980 doc
: /* Assign higher priority to the charsets given as arguments.
1981 usage: (set-charset-priority &rest charsets) */)
1986 Lisp_Object new_head
= Qnil
, old_list
, arglist
[2];
1989 old_list
= Fcopy_sequence (Vcharset_ordered_list
);
1990 for (i
= 0; i
< nargs
; i
++)
1992 CHECK_CHARSET_GET_ID (args
[i
], id
);
1993 old_list
= Fdelq (make_number (id
), old_list
);
1994 new_head
= Fcons (make_number (id
), new_head
);
1996 arglist
[0] = Fnreverse (new_head
);
1997 arglist
[1] = old_list
;
1998 Vcharset_ordered_list
= Fnconc (2, arglist
);
1999 charset_ordered_list_tick
++;
2011 init_charset_once ()
2015 for (i
= 0; i
< ISO_MAX_DIMENSION
; i
++)
2016 for (j
= 0; j
< ISO_MAX_CHARS
; j
++)
2017 for (k
= 0; k
< ISO_MAX_FINAL
; k
++)
2018 iso_charset_table
[i
][j
][k
] = -1;
2020 for (i
= 0; i
< 255; i
++)
2021 emacs_mule_charset
[i
] = NULL
;
2023 charset_jisx0201_roman
= -1;
2024 charset_jisx0208_1978
= -1;
2025 charset_jisx0208
= -1;
2028 Vchar_charset_set
= Fmake_char_table (Qnil
, Qnil
);
2029 CHAR_TABLE_SET (Vchar_charset_set
, make_number (97), Qnil
);
2031 DEFSYM (Qcharset_encode_table
, "charset-encode-table");
2033 /* Intern this now in case it isn't already done.
2034 Setting this variable twice is harmless.
2035 But don't staticpro it here--that is done in alloc.c. */
2036 Qchar_table_extra_slots
= intern ("char-table-extra-slots");
2038 /* Now we are ready to set up this property, so we can create syntax
2040 Fput (Qcharset_encode_table
, Qchar_table_extra_slots
, make_number (0));
2051 DEFSYM (Qcharsetp
, "charsetp");
2053 DEFSYM (Qascii
, "ascii");
2054 DEFSYM (Qunicode
, "unicode");
2055 DEFSYM (Qeight_bit
, "eight-bit");
2056 DEFSYM (Qiso_8859_1
, "iso-8859-1");
2061 p
= (char *) xmalloc (30000);
2063 staticpro (&Vcharset_ordered_list
);
2064 Vcharset_ordered_list
= Qnil
;
2066 staticpro (&Viso_2022_charset_list
);
2067 Viso_2022_charset_list
= Qnil
;
2069 staticpro (&Vemacs_mule_charset_list
);
2070 Vemacs_mule_charset_list
= Qnil
;
2072 staticpro (&Vcharset_hash_table
);
2073 Vcharset_hash_table
= Fmakehash (Qeq
);
2075 charset_table_size
= 128;
2076 charset_table
= ((struct charset
*)
2077 xmalloc (sizeof (struct charset
) * charset_table_size
));
2078 charset_table_used
= 0;
2080 staticpro (&Vchar_unified_charset_table
);
2081 Vchar_unified_charset_table
= Fmake_char_table (Qnil
, make_number (-1));
2083 defsubr (&Scharsetp
);
2084 defsubr (&Smap_charset_chars
);
2085 defsubr (&Sdefine_charset_internal
);
2086 defsubr (&Sdefine_charset_alias
);
2087 defsubr (&Sprimary_charset
);
2088 defsubr (&Sset_primary_charset
);
2089 defsubr (&Scharset_plist
);
2090 defsubr (&Sset_charset_plist
);
2091 defsubr (&Sunify_charset
);
2092 defsubr (&Sget_unused_iso_final_char
);
2093 defsubr (&Sdeclare_equiv_charset
);
2094 defsubr (&Sfind_charset_region
);
2095 defsubr (&Sfind_charset_string
);
2096 defsubr (&Sdecode_char
);
2097 defsubr (&Sencode_char
);
2098 defsubr (&Ssplit_char
);
2099 defsubr (&Smake_char
);
2100 defsubr (&Schar_charset
);
2101 defsubr (&Scharset_after
);
2102 defsubr (&Siso_charset
);
2103 defsubr (&Sclear_charset_maps
);
2104 defsubr (&Scharset_priority_list
);
2105 defsubr (&Sset_charset_priority
);
2107 DEFVAR_LISP ("charset-map-directory", &Vcharset_map_directory
,
2108 doc
: /* Directory of charset map files that come with GNU Emacs.
2109 The default value is sub-directory "charsets" of `data-directory'. */);
2110 Vcharset_map_directory
= Fexpand_file_name (build_string ("charsets"),
2113 DEFVAR_LISP ("charset-list", &Vcharset_list
,
2114 doc
: /* List of all charsets ever defined. */);
2115 Vcharset_list
= Qnil
;
2118 = define_charset_internal (Qascii
, 1, "\x00\x7F\x00\x00\x00\x00",
2119 0, 127, 'B', -1, 0, 1, 0, 0);
2121 = define_charset_internal (Qunicode
, 3, "\x00\xFF\x00\xFF\x00\x10",
2122 0, MAX_UNICODE_CHAR
, -1, 0, -1, 1, 0, 0);
2124 = define_charset_internal (Qeight_bit
, 1, "\x80\xFF\x00\x00\x00\x00",
2125 128, 255, -1, 0, -1, 0, 0,
2126 MAX_5_BYTE_CHAR
+ 1);