+DEFUN ("get-composite-char", Fget_composite_char, 1, 1, 0, /*
+Return character corresponding with list.
+*/
+ (list))
+{
+ Lisp_Object table = Vcharacter_composition_table;
+ Lisp_Object rest = list;
+
+ while (CONSP (rest))
+ {
+ Lisp_Object v = Fcar (rest);
+ Lisp_Object ret;
+ Emchar c = to_char_id (v, "Invalid value for composition", list);
+
+ ret = get_char_id_table (c, table);
+
+ rest = Fcdr (rest);
+ if (NILP (rest))
+ {
+ if (!CHAR_ID_TABLE_P (ret))
+ return ret;
+ else
+ return Qt;
+ }
+ else if (!CONSP (rest))
+ break;
+ else if (CHAR_ID_TABLE_P (ret))
+ table = ret;
+ else
+ signal_simple_error ("Invalid table is found with", list);
+ }
+ signal_simple_error ("Invalid value for composition", list);
+}
+
+DEFUN ("char-variants", Fchar_variants, 1, 1, 0, /*
+Return variants of CHARACTER.
+*/
+ (character))
+{
+ CHECK_CHAR (character);
+ return Fcopy_list (get_char_id_table (XCHAR (character),
+ Vcharacter_variant_table));
+}
+
+
+/* We store the char-attributes in hash tables with the names as the
+ key and the actual char-id-table object as the value. Occasionally
+ we need to use them in a list format. These routines provide us
+ with that. */
+struct char_attribute_list_closure
+{
+ Lisp_Object *char_attribute_list;
+};
+
+static int
+add_char_attribute_to_list_mapper (Lisp_Object key, Lisp_Object value,
+ void *char_attribute_list_closure)
+{
+ /* This function can GC */
+ struct char_attribute_list_closure *calcl
+ = (struct char_attribute_list_closure*) char_attribute_list_closure;
+ Lisp_Object *char_attribute_list = calcl->char_attribute_list;
+
+ *char_attribute_list = Fcons (key, *char_attribute_list);
+ return 0;
+}
+
+DEFUN ("char-attribute-list", Fchar_attribute_list, 0, 0, 0, /*
+Return the list of all existing character attributes except coded-charsets.
+*/
+ ())
+{
+ Lisp_Object char_attribute_list = Qnil;
+ struct gcpro gcpro1;
+ struct char_attribute_list_closure char_attribute_list_closure;
+
+ GCPRO1 (char_attribute_list);
+ char_attribute_list_closure.char_attribute_list = &char_attribute_list;
+ elisp_maphash (add_char_attribute_to_list_mapper,
+ Vchar_attribute_hash_table,
+ &char_attribute_list_closure);
+ UNGCPRO;
+ return char_attribute_list;
+}
+
+DEFUN ("find-char-attribute-table", Ffind_char_attribute_table, 1, 1, 0, /*
+Return char-id-table corresponding to ATTRIBUTE.
+*/
+ (attribute))
+{
+ return Fgethash (attribute, Vchar_attribute_hash_table, Qnil);
+}
+
+
+/* We store the char-id-tables in hash tables with the attributes as
+ the key and the actual char-id-table object as the value. Each
+ char-id-table stores values of an attribute corresponding with
+ characters. Occasionally we need to get attributes of a character
+ in a association-list format. These routines provide us with
+ that. */
+struct char_attribute_alist_closure
+{
+ Emchar char_id;
+ Lisp_Object *char_attribute_alist;
+};
+
+static int
+add_char_attribute_alist_mapper (Lisp_Object key, Lisp_Object value,
+ void *char_attribute_alist_closure)
+{
+ /* This function can GC */
+ struct char_attribute_alist_closure *caacl =
+ (struct char_attribute_alist_closure*) char_attribute_alist_closure;
+ Lisp_Object ret = get_char_id_table (caacl->char_id, value);
+ if (!UNBOUNDP (ret))
+ {
+ Lisp_Object *char_attribute_alist = caacl->char_attribute_alist;
+ *char_attribute_alist
+ = Fcons (Fcons (key, ret), *char_attribute_alist);
+ }
+ return 0;
+}
+
+DEFUN ("char-attribute-alist", Fchar_attribute_alist, 1, 1, 0, /*
+Return the alist of attributes of CHARACTER.
+*/
+ (character))
+{
+ Lisp_Object alist = Qnil;
+ int i;
+
+ CHECK_CHAR (character);
+ {
+ struct gcpro gcpro1;
+ struct char_attribute_alist_closure char_attribute_alist_closure;
+
+ GCPRO1 (alist);
+ char_attribute_alist_closure.char_id = XCHAR (character);
+ char_attribute_alist_closure.char_attribute_alist = &alist;
+ elisp_maphash (add_char_attribute_alist_mapper,
+ Vchar_attribute_hash_table,
+ &char_attribute_alist_closure);
+ UNGCPRO;
+ }
+
+ for (i = 0; i < countof (chlook->charset_by_leading_byte); i++)
+ {
+ Lisp_Object ccs = chlook->charset_by_leading_byte[i];
+
+ if (!NILP (ccs))
+ {
+ Lisp_Object encoding_table = XCHARSET_ENCODING_TABLE (ccs);
+ Lisp_Object cpos;
+
+ if ( CHAR_ID_TABLE_P (encoding_table)
+ && INTP (cpos = get_char_id_table (XCHAR (character),
+ encoding_table)) )
+ {
+ alist = Fcons (Fcons (ccs, cpos), alist);
+ }
+ }
+ }
+ return alist;
+}
+
+DEFUN ("get-char-attribute", Fget_char_attribute, 2, 2, 0, /*
+Return the value of CHARACTER's ATTRIBUTE.
+*/
+ (character, attribute))
+{
+ Lisp_Object ccs;
+
+ CHECK_CHAR (character);
+ if (!NILP (ccs = Ffind_charset (attribute)))
+ {
+ Lisp_Object encoding_table = XCHARSET_ENCODING_TABLE (ccs);
+
+ if (CHAR_ID_TABLE_P (encoding_table))
+ return get_char_id_table (XCHAR (character), encoding_table);
+ else
+ return Qnil;
+ }
+ else
+ {
+ Lisp_Object table = Fgethash (attribute,
+ Vchar_attribute_hash_table,
+ Qunbound);
+ if (!UNBOUNDP (table))
+ {
+ Lisp_Object ret = get_char_id_table (XCHAR (character), table);
+ if (!UNBOUNDP (ret))
+ return ret;
+ }
+ }
+ return Qnil;
+}
+
+DEFUN ("put-char-attribute", Fput_char_attribute, 3, 3, 0, /*
+Store CHARACTER's ATTRIBUTE with VALUE.
+*/
+ (character, attribute, value))
+{
+ Lisp_Object ccs;
+
+ CHECK_CHAR (character);
+ ccs = Ffind_charset (attribute);
+ if (!NILP (ccs))
+ {
+ return put_char_ccs_code_point (character, ccs, value);
+ }
+ else if (EQ (attribute, Q_decomposition))
+ {
+ Lisp_Object seq;
+
+ if (!CONSP (value))
+ signal_simple_error ("Invalid value for ->decomposition",
+ value);
+
+ if (CONSP (Fcdr (value)))
+ {
+ Lisp_Object rest = value;
+ Lisp_Object table = Vcharacter_composition_table;
+ size_t len;
+ int i = 0;
+
+ GET_EXTERNAL_LIST_LENGTH (rest, len);
+ seq = make_vector (len, Qnil);
+
+ while (CONSP (rest))
+ {
+ Lisp_Object v = Fcar (rest);
+ Lisp_Object ntable;
+ Emchar c
+ = to_char_id (v, "Invalid value for ->decomposition", value);
+
+ if (c < 0)
+ XVECTOR_DATA(seq)[i++] = v;
+ else
+ XVECTOR_DATA(seq)[i++] = make_char (c);
+ rest = Fcdr (rest);
+ if (!CONSP (rest))
+ {
+ put_char_id_table (c, character, table);
+ break;
+ }
+ else
+ {
+ ntable = get_char_id_table (c, table);
+ if (!CHAR_ID_TABLE_P (ntable))
+ {
+ ntable = make_char_id_table (Qnil);
+ put_char_id_table (c, ntable, table);
+ }
+ table = ntable;
+ }
+ }
+ }
+ else
+ {
+ Lisp_Object v = Fcar (value);
+
+ if (INTP (v))
+ {
+ Emchar c = XINT (v);
+ Lisp_Object ret
+ = get_char_id_table (c, Vcharacter_variant_table);