#include <config.h>
#include <ctype.h>
#include "lisp.h"
#include "buffer.h"
#include "charset.h"
#include "category.h"
static int category_table_version;
Lisp_Object Qcategory_table, Qcategoryp, Qcategorysetp, Qcategory_table_p;
Lisp_Object Vword_combining_categories, Vword_separating_categories;
Lisp_Object _temp_category_set;
DEFUN ("make-category-set", Fmake_category_set, Smake_category_set, 1, 1, 0,
"Return a newly created category-set which contains CATEGORIES.\n\
CATEGORIES is a string of category mnemonics.\n\
The value is a bool-vector which has t at the indices corresponding to\n\
those categories.")
(categories)
Lisp_Object categories;
{
Lisp_Object val;
int len;
CHECK_STRING (categories, 0);
val = MAKE_CATEGORY_SET;
if (STRING_MULTIBYTE (categories))
error ("Multibyte string in make-category-set");
len = XSTRING (categories)->size;
while (--len >= 0)
{
Lisp_Object category;
XSETFASTINT (category, XSTRING (categories)->data[len]);
CHECK_CATEGORY (category, 0);
SET_CATEGORY_SET (val, category, Qt);
}
return val;
}
Lisp_Object check_category_table ();
DEFUN ("define-category", Fdefine_category, Sdefine_category, 2, 3, 0,
"Define CHAR as a category which is described by DOCSTRING.\n\
CHAR should be an ASCII printing character in the range ` ' to `~'.\n\
DOCSTRING is a documentation string of the category.\n\
The category is defined only in category table TABLE, which defaults to\n\
the current buffer's category table.")
(category, docstring, table)
Lisp_Object category, docstring, table;
{
CHECK_CATEGORY (category, 0);
CHECK_STRING (docstring, 1);
table = check_category_table (table);
if (!NILP (CATEGORY_DOCSTRING (table, XFASTINT (category))))
error ("Category `%c' is already defined", XFASTINT (category));
CATEGORY_DOCSTRING (table, XFASTINT (category)) = docstring;
return Qnil;
}
DEFUN ("category-docstring", Fcategory_docstring, Scategory_docstring, 1, 2, 0,
"Return the documentation string of CATEGORY, as defined in CATEGORY-TABLE.")
(category, table)
Lisp_Object category, table;
{
CHECK_CATEGORY (category, 0);
table = check_category_table (table);
return CATEGORY_DOCSTRING (table, XFASTINT (category));
}
DEFUN ("get-unused-category", Fget_unused_category, Sget_unused_category,
0, 1, 0,
"Return a category which is not yet defined in CATEGORY-TABLE.\n\
If no category remains available, return nil.\n\
The optional argument CATEGORY-TABLE specifies which category table\n\
to modify; it defaults to the current buffer's category table.")
(table)
Lisp_Object table;
{
int i;
table = check_category_table (table);
for (i = ' '; i <= '~'; i++)
if (NILP (CATEGORY_DOCSTRING (table, i)))
return make_number (i);
return Qnil;
}
DEFUN ("category-table-p", Fcategory_table_p, Scategory_table_p, 1, 1, 0,
"Return t if ARG is a category table.")
(arg)
Lisp_Object arg;
{
if (CHAR_TABLE_P (arg)
&& EQ (XCHAR_TABLE (arg)->purpose, Qcategory_table))
return Qt;
return Qnil;
}
Lisp_Object
check_category_table (table)
Lisp_Object table;
{
register Lisp_Object tem;
if (NILP (table))
return current_buffer->category_table;
while (tem = Fcategory_table_p (table), NILP (tem))
table = wrong_type_argument (Qcategory_table_p, table);
return table;
}
DEFUN ("category-table", Fcategory_table, Scategory_table, 0, 0, 0,
"Return the current category table.\n\
This is the one specified by the current buffer.")
()
{
return current_buffer->category_table;
}
DEFUN ("standard-category-table", Fstandard_category_table,
Sstandard_category_table, 0, 0, 0,
"Return the standard category table.\n\
This is the one used for new buffers.")
()
{
return Vstandard_category_table;
}
Lisp_Object
copy_category_table (table)
Lisp_Object table;
{
Lisp_Object tmp;
int i, to;
if (!NILP (XCHAR_TABLE (table)->top))
{
table = Fcopy_sequence (table);
for (i = 0; i < CHAR_TABLE_SINGLE_BYTE_SLOTS; i++)
if (!NILP (tmp = XCHAR_TABLE (table)->contents[i]))
XCHAR_TABLE (table)->contents[i] = Fcopy_sequence (tmp);
to = CHAR_TABLE_ORDINARY_SLOTS;
Fset_char_table_extra_slot
(table, make_number (0),
Fcopy_sequence (Fchar_table_extra_slot (table, make_number (0))));
}
else
{
i = 32;
to = SUB_CHAR_TABLE_ORDINARY_SLOTS;
}
if (!NILP (tmp = XCHAR_TABLE (table)->defalt))
XCHAR_TABLE (table)->defalt = Fcopy_sequence (tmp);
for (; i < to; i++)
if (!NILP (tmp = XCHAR_TABLE (table)->contents[i]))
XCHAR_TABLE (table)->contents[i]
= (SUB_CHAR_TABLE_P (tmp)
? copy_category_table (tmp) : Fcopy_sequence (tmp));
return table;
}
DEFUN ("copy-category-table", Fcopy_category_table, Scopy_category_table,
0, 1, 0,
"Construct a new category table and return it.\n\
It is a copy of the TABLE, which defaults to the standard category table.")
(table)
Lisp_Object table;
{
if (!NILP (table))
check_category_table (table);
else
table = Vstandard_category_table;
return copy_category_table (table);
}
DEFUN ("make-category-table", Fmake_category_table, Smake_category_table,
0, 0, 0,
"Construct a new and empty category table and return it.")
()
{
Lisp_Object val;
val = Fmake_char_table (Qcategory_table, Qnil);
XCHAR_TABLE (val)->defalt = MAKE_CATEGORY_SET;
Fset_char_table_extra_slot (val, make_number (0),
Fmake_vector (make_number (95), Qnil));
return val;
}
DEFUN ("set-category-table", Fset_category_table, Sset_category_table, 1, 1, 0,
"Specify TABLE as the category table for the current buffer.")
(table)
Lisp_Object table;
{
int idx;
table = check_category_table (table);
current_buffer->category_table = table;
idx = PER_BUFFER_VAR_IDX (category_table);
SET_PER_BUFFER_VALUE_P (current_buffer, idx, 1);
return table;
}
DEFUN ("char-category-set", Fchar_category_set, Schar_category_set, 1, 1, 0,
"Return the category set of CHAR.")
(ch)
Lisp_Object ch;
{
CHECK_NUMBER (ch, 0);
return CATEGORY_SET (XFASTINT (ch));
}
DEFUN ("category-set-mnemonics", Fcategory_set_mnemonics,
Scategory_set_mnemonics, 1, 1, 0,
"Return a string containing mnemonics of the categories in CATEGORY-SET.\n\
CATEGORY-SET is a bool-vector, and the categories \"in\" it are those\n\
that are indexes where t occurs the bool-vector.\n\
The return value is a string containing those same categories.")
(category_set)
Lisp_Object category_set;
{
int i, j;
char str[96];
CHECK_CATEGORY_SET (category_set, 0);
j = 0;
for (i = 32; i < 127; i++)
if (CATEGORY_MEMBER (i, category_set))
str[j++] = i;
str[j] = '\0';
return build_string (str);
}
void
modify_lower_category_set (table, category, set_value)
Lisp_Object table, category, set_value;
{
Lisp_Object val;
int i;
val = XCHAR_TABLE (table)->defalt;
if (!CATEGORY_SET_P (val))
val = MAKE_CATEGORY_SET;
SET_CATEGORY_SET (val, category, set_value);
XCHAR_TABLE (table)->defalt = val;
for (i = 32; i < SUB_CHAR_TABLE_ORDINARY_SLOTS; i++)
{
val = XCHAR_TABLE (table)->contents[i];
if (CATEGORY_SET_P (val))
SET_CATEGORY_SET (val, category, set_value);
else if (SUB_CHAR_TABLE_P (val))
modify_lower_category_set (val, category, set_value);
}
}
void
set_category_set (category_set, category, val)
Lisp_Object category_set, category, val;
{
do {
int idx = XINT (category) / 8;
unsigned char bits = 1 << (XINT (category) % 8);
if (NILP (val))
XCATEGORY_SET (category_set)->data[idx] &= ~bits;
else
XCATEGORY_SET (category_set)->data[idx] |= bits;
} while (0);
}
DEFUN ("modify-category-entry", Fmodify_category_entry,
Smodify_category_entry, 2, 4, 0,
"Modify the category set of CHARACTER by adding CATEGORY to it.\n\
The category is changed only for table TABLE, which defaults to\n\
the current buffer's category table.\n\
If optional fourth argument RESET is non-nil,\n\
then delete CATEGORY from the category set instead of adding it.")
(character, category, table, reset)
Lisp_Object character, category, table, reset;
{
int c, charset, c1, c2;
Lisp_Object set_value;
Lisp_Object val, category_set;
CHECK_NUMBER (character, 0);
c = XINT (character);
CHECK_CATEGORY (category, 1);
table = check_category_table (table);
if (NILP (CATEGORY_DOCSTRING (table, XFASTINT (category))))
error ("Undefined category: %c", XFASTINT (category));
set_value = NILP (reset) ? Qt : Qnil;
if (c < CHAR_TABLE_SINGLE_BYTE_SLOTS)
{
val = XCHAR_TABLE (table)->contents[c];
if (!CATEGORY_SET_P (val))
XCHAR_TABLE (table)->contents[c] = (val = MAKE_CATEGORY_SET);
SET_CATEGORY_SET (val, category, set_value);
return Qnil;
}
SPLIT_CHAR (c, charset, c1, c2);
val = XCHAR_TABLE (table)->contents[charset + 128];
if (CATEGORY_SET_P (val))
category_set = val;
else if (!SUB_CHAR_TABLE_P (val))
{
category_set = val = MAKE_CATEGORY_SET;
XCHAR_TABLE (table)->contents[charset + 128] = category_set;
}
if (c1 <= 0)
{
if (SUB_CHAR_TABLE_P (val))
modify_lower_category_set (val, category, set_value);
else
SET_CATEGORY_SET (category_set, category, set_value);
return Qnil;
}
if (!SUB_CHAR_TABLE_P (val))
{
val = make_sub_char_table (Qnil);
XCHAR_TABLE (table)->contents[charset + 128] = val;
XCHAR_TABLE (val)->defalt = category_set;
}
table = val;
val = XCHAR_TABLE (table)->contents[c1];
if (CATEGORY_SET_P (val))
category_set = val;
else if (!SUB_CHAR_TABLE_P (val))
{
category_set = val = Fcopy_sequence (XCHAR_TABLE (table)->defalt);
XCHAR_TABLE (table)->contents[c1] = category_set;
}
if (c2 <= 0)
{
if (SUB_CHAR_TABLE_P (val))
modify_lower_category_set (val, category, set_value);
else
SET_CATEGORY_SET (category_set, category, set_value);
return Qnil;
}
if (!SUB_CHAR_TABLE_P (val))
{
val = make_sub_char_table (Qnil);
XCHAR_TABLE (table)->contents[c1] = val;
XCHAR_TABLE (val)->defalt = category_set;
}
table = val;
val = XCHAR_TABLE (table)->contents[c2];
if (CATEGORY_SET_P (val))
category_set = val;
else if (!SUB_CHAR_TABLE_P (val))
{
category_set = Fcopy_sequence (XCHAR_TABLE (table)->defalt);
XCHAR_TABLE (table)->contents[c2] = category_set;
}
else
error ("Invalid category table");
SET_CATEGORY_SET (category_set, category, set_value);
return Qnil;
}
static void
describe_category (value)
Lisp_Object value;
{
Lisp_Object mnemonics;
Findent_to (make_number (16), make_number (1));
if (NILP (value))
{
insert_string ("default\n");
return;
}
if (CHAR_TABLE_P (value))
{
insert_string ("deeper char-table ...\n");
return;
}
if (!CATEGORY_SET_P (value))
{
insert_string ("invalid\n");
return;
}
mnemonics = Fcategory_set_mnemonics (value);
insert_from_string (mnemonics, 0, 0, XSTRING (mnemonics)->size,
STRING_BYTES (XSTRING (mnemonics)), 0);
insert_string ("\n");
return;
}
static Lisp_Object
describe_category_1 (vector)
Lisp_Object vector;
{
struct buffer *old = current_buffer;
set_buffer_internal (XBUFFER (Vstandard_output));
describe_vector (vector, Qnil, describe_category, 0, Qnil, Qnil,
(int *)0, 0);
{
int i;
Lisp_Object docs = XCHAR_TABLE (vector)->extras[0];
Lisp_Object elt;
if (!VECTORP (docs) || XVECTOR (docs)->size != 95)
{
insert_string ("Invalid first extra slot in this char table\n");
return Qnil;
}
insert_string ("Meanings of mnemonice characters are:\n");
for (i = 0; i < 95; i++)
{
elt = XVECTOR (docs)->contents[i];
if (NILP (elt))
continue;
insert_char (i + 32);
insert (": ", 2);
insert_from_string (elt, 0, 0, XSTRING (elt)->size,
STRING_BYTES (XSTRING (elt)), 0);
insert ("\n", 1);
}
}
while (! NILP (XCHAR_TABLE (vector)->parent))
{
vector = XCHAR_TABLE (vector)->parent;
insert_string ("\nThe parent category table is:");
describe_vector (vector, Qnil, describe_category, 0, Qnil, Qnil,
(int *) 0, 0);
}
call0 (intern ("help-mode"));
set_buffer_internal (old);
return Qnil;
}
DEFUN ("describe-categories", Fdescribe_categories, Sdescribe_categories, 0, 0, "",
"Describe the category specifications in the current category table.\n\
The descriptions are inserted in a buffer, which is then displayed.")
()
{
internal_with_output_to_temp_buffer
("*Help*", describe_category_1, current_buffer->category_table);
return Qnil;
}
int
word_boundary_p (c1, c2)
int c1, c2;
{
Lisp_Object category_set1, category_set2;
Lisp_Object tail;
int default_result;
if (CHAR_CHARSET (c1) == CHAR_CHARSET (c2))
{
tail = Vword_separating_categories;
default_result = 0;
}
else
{
tail = Vword_combining_categories;
default_result = 1;
}
category_set1 = CATEGORY_SET (c1);
if (NILP (category_set1))
return default_result;
category_set2 = CATEGORY_SET (c2);
if (NILP (category_set2))
return default_result;
for (; CONSP (tail); tail = XCDR (tail))
{
Lisp_Object elt = XCAR (tail);
if (CONSP (elt)
&& CATEGORYP (XCAR (elt))
&& CATEGORYP (XCDR (elt))
&& CATEGORY_MEMBER (XFASTINT (XCAR (elt)), category_set1)
&& CATEGORY_MEMBER (XFASTINT (XCDR (elt)), category_set2))
return !default_result;
}
return default_result;
}
void
init_category_once ()
{
Qcategory_table = intern ("category-table");
staticpro (&Qcategory_table);
Qchar_table_extra_slots = intern ("char-table-extra-slots");
Fput (Qcategory_table, Qchar_table_extra_slots, make_number (2));
Vstandard_category_table = Fmake_char_table (Qcategory_table, Qnil);
XCHAR_TABLE (Vstandard_category_table)->defalt = MAKE_CATEGORY_SET;
Fset_char_table_extra_slot (Vstandard_category_table, make_number (0),
Fmake_vector (make_number (95), Qnil));
}
void
syms_of_category ()
{
Qcategoryp = intern ("categoryp");
staticpro (&Qcategoryp);
Qcategorysetp = intern ("categorysetp");
staticpro (&Qcategorysetp);
Qcategory_table_p = intern ("category-table-p");
staticpro (&Qcategory_table_p);
DEFVAR_LISP ("word-combining-categories", &Vword_combining_categories,
"List of pair (cons) of categories to determine word boundary.\n\
\n\
Emacs treats a sequence of word constituent characters as a single\n\
word (i.e. finds no word boundary between them) iff they belongs to\n\
the same charset. But, exceptions are allowed in the following cases.\n\
\n\
\(1) The case that characters are in different charsets is controlled\n\
by the variable `word-combining-categories'.\n\
\n\
Emacs finds no word boundary between characters of different charsets\n\
if they have categories matching some element of this list.\n\
\n\
More precisely, if an element of this list is a cons of category CAT1\n\
and CAT2, and a multibyte character C1 which has CAT1 is followed by\n\
C2 which has CAT2, there's no word boundary between C1 and C2.\n\
\n\
For instance, to tell that ASCII characters and Latin-1 characters can\n\
form a single word, the element `(?l . ?l)' should be in this list\n\
because both characters have the category `l' (Latin characters).\n\
\n\
\(2) The case that character are in the same charset is controlled by\n\
the variable `word-separating-categories'.\n\
\n\
Emacs find a word boundary between characters of the same charset\n\
if they have categories matching some element of this list.\n\
\n\
More precisely, if an element of this list is a cons of category CAT1\n\
and CAT2, and a multibyte character C1 which has CAT1 is followed by\n\
C2 which has CAT2, there's a word boundary between C1 and C2.\n\
\n\
For instance, to tell that there's a word boundary between Japanese\n\
Hiragana and Japanese Kanji (both are in the same charset), the\n\
element `(?H . ?C) should be in this list.");
Vword_combining_categories = Qnil;
DEFVAR_LISP ("word-separating-categories", &Vword_separating_categories,
"List of pair (cons) of categories to determine word boundary.\n\
See the documentation of the variable `word-combining-categories'.");
Vword_separating_categories = Qnil;
defsubr (&Smake_category_set);
defsubr (&Sdefine_category);
defsubr (&Scategory_docstring);
defsubr (&Sget_unused_category);
defsubr (&Scategory_table_p);
defsubr (&Scategory_table);
defsubr (&Sstandard_category_table);
defsubr (&Scopy_category_table);
defsubr (&Smake_category_table);
defsubr (&Sset_category_table);
defsubr (&Schar_category_set);
defsubr (&Scategory_set_mnemonics);
defsubr (&Smodify_category_entry);
defsubr (&Sdescribe_categories);
category_table_version = 0;
}