/* Basic string functions */
/************************************************************************/
-/* Copy the character pointed to by PTR into STR, assuming it's
- non-ASCII. Do not call this directly. Use the macro
- charptr_copy_char() instead. */
+/* Copy the character pointed to by SRC into DST. Do not call this
+ directly. Use the macro charptr_copy_char() instead.
+ Return the number of bytes copied. */
Bytecount
-non_ascii_charptr_copy_char (const Bufbyte *ptr, Bufbyte *str)
+non_ascii_charptr_copy_char (const Bufbyte *src, Bufbyte *dst)
{
- Bufbyte *strptr = str;
- *strptr = *ptr++;
- switch (REP_BYTES_BY_FIRST_BYTE (*strptr))
- {
- /* Notice fallthrough. */
- case 4: *++strptr = *ptr++;
- case 3: *++strptr = *ptr++;
- case 2: *++strptr = *ptr;
- break;
- default:
- abort ();
- }
- return strptr + 1 - str;
+ unsigned int bytes = REP_BYTES_BY_FIRST_BYTE (*src);
+ unsigned int i;
+ for (i = bytes; i; i--, dst++, src++)
+ *dst = *src;
+ return bytes;
}
\f
{
Bufbyte str[MAX_EMCHAR_LEN];
Bufbyte *strptr = str;
+ unsigned int bytes;
str[0] = (Bufbyte) ch;
- switch (REP_BYTES_BY_FIRST_BYTE (ch))
+
+ for (bytes = REP_BYTES_BY_FIRST_BYTE (ch) - 1; bytes; bytes--)
{
- /* Notice fallthrough. */
- case 4:
- ch = Lstream_getc (stream);
- assert (ch >= 0);
- *++strptr = (Bufbyte) ch;
- case 3:
- ch = Lstream_getc (stream);
- assert (ch >= 0);
- *++strptr = (Bufbyte) ch;
- case 2:
- ch = Lstream_getc (stream);
- assert (ch >= 0);
- *++strptr = (Bufbyte) ch;
- break;
- default:
- abort ();
+ int c = Lstream_getc (stream);
+ bufpos_checking_assert (c >= 0);
+ *++strptr = (Bufbyte) c;
}
return charptr_emchar (str);
}
DEFINE_LRECORD_IMPLEMENTATION ("charset", charset,
mark_charset, print_charset, 0, 0, 0, charset_description,
Lisp_Charset);
-/* Make a new charset. */
+/* Make a new charset. */
+/* #### SJT Should generic properties be allowed? */
static Lisp_Object
make_charset (int id, Lisp_Object name, unsigned char rep_bytes,
unsigned char type, unsigned char columns, unsigned char graphic,
if (dimension == 1)
{
- if (chlook->next_allocated_1_byte_leading_byte > MAX_LEADING_BYTE_PRIVATE_1)
+ if (chlook->next_allocated_1_byte_leading_byte >
+ MAX_LEADING_BYTE_PRIVATE_1)
lb = 0;
else
lb = chlook->next_allocated_1_byte_leading_byte++;
}
else
{
- if (chlook->next_allocated_2_byte_leading_byte > MAX_LEADING_BYTE_PRIVATE_2)
- lb = 0;
+ /* awfully fragile, but correct */
+#if MAX_LEADING_BYTE_PRIVATE_2 == 255
+ if (chlook->next_allocated_2_byte_leading_byte == 0)
+#else
+ if (chlook->next_allocated_2_byte_leading_byte >
+ MAX_LEADING_BYTE_PRIVATE_2)
+#endif
+ lb = 0;
else
lb = chlook->next_allocated_2_byte_leading_byte++;
}
}
DEFUN ("charset-name", Fcharset_name, 1, 1, 0, /*
-Return the name of the given charset.
+Return the name of charset CHARSET.
*/
(charset))
{
return XCHARSET_NAME (Fget_charset (charset));
}
+/* #### SJT Should generic properties be allowed? */
DEFUN ("make-charset", Fmake_charset, 3, 3, 0, /*
Define a new character set.
This function is for use with Mule support.
short_name = value;
}
- if (EQ (keyword, Qlong_name))
+ else if (EQ (keyword, Qlong_name))
{
CHECK_STRING (value);
long_name = value;
else if (EQ (keyword, Qccl_program))
{
- CHECK_VECTOR (value);
+ struct ccl_program test_ccl;
+
+ if (setup_ccl_program (&test_ccl, value) < 0)
+ signal_simple_error ("Invalid value for 'ccl-program", value);
ccl_program = value;
}
}
DEFUN ("charset-property", Fcharset_property, 2, 2, 0, /*
-Return property PROP of CHARSET.
+Return property PROP of CHARSET, a charset object or symbol naming a charset.
Recognized properties are those listed in `make-charset', as well as
'name and 'doc-string.
*/
if (EQ (prop, Qreverse_direction_charset))
{
Lisp_Object obj = CHARSET_REVERSE_DIRECTION_CHARSET (cs);
- if (NILP (obj))
- return Qnil;
- else
- return XCHARSET_NAME (obj);
+ /* #### Is this translation OK? If so, error checking sufficient? */
+ return CHARSETP (obj) ? XCHARSET_NAME (obj) : obj;
}
signal_simple_error ("Unrecognized charset property name", prop);
return Qnil; /* not reached */
*/
(charset, ccl_program))
{
+ struct ccl_program test_ccl;
+
charset = Fget_charset (charset);
- CHECK_VECTOR (ccl_program);
+ if (setup_ccl_program (&test_ccl, ccl_program) < 0)
+ signal_simple_error ("Invalid ccl-program", ccl_program);
XCHARSET_CCL_PROGRAM (charset) = ccl_program;
return Qnil;
}
}
DEFUN ("char-charset", Fchar_charset, 1, 1, 0, /*
-Return the character set of char CH.
+Return the character set of CHARACTER.
*/
- (ch))
+ (character))
{
- CHECK_CHAR_COERCE_INT (ch);
+ CHECK_CHAR_COERCE_INT (character);
return XCHARSET_NAME (CHARSET_BY_LEADING_BYTE
- (CHAR_LEADING_BYTE (XCHAR (ch))));
+ (CHAR_LEADING_BYTE (XCHAR (character))));
}
DEFUN ("char-octet", Fchar_octet, 1, 2, 0, /*
-Return the octet numbered N (should be 0 or 1) of char CH.
+Return the octet numbered N (should be 0 or 1) of CHARACTER.
N defaults to 0 if omitted.
*/
- (ch, n))
+ (character, n))
{
Lisp_Object charset;
int octet0, octet1;
- CHECK_CHAR_COERCE_INT (ch);
+ CHECK_CHAR_COERCE_INT (character);
- BREAKUP_CHAR (XCHAR (ch), charset, octet0, octet1);
+ BREAKUP_CHAR (XCHAR (character), charset, octet0, octet1);
if (NILP (n) || EQ (n, Qzero))
return make_int (octet0);
}
DEFUN ("split-char", Fsplit_char, 1, 1, 0, /*
-Return list of charset and one or two position-codes of CHAR.
+Return list of charset and one or two position-codes of CHARACTER.
*/
(character))
{
{
int i, j, k;
- chlook = xnew (struct charset_lookup);
- dumpstruct (&chlook, &charset_lookup_description);
+ chlook = xnew_and_zero (struct charset_lookup); /* zero for Purify. */
+ dump_add_root_struct_ptr (&chlook, &charset_lookup_description);
/* Table of charsets indexed by leading byte. */
for (i = 0; i < countof (chlook->charset_by_leading_byte); i++)
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