1 /* $Id: macucs.c,v 1.2 2002/12/04 19:44:57 ben Exp $ */
13 * Mac Unicode-handling routines.
15 * FIXME: currently trivial stub versions assuming all codepages
18 * What we _should_ do is to use the Text Encoding Conversion Manager
19 * when it's available, and have our own routines for converting to
20 * standard Mac OS scripts when it's not. Support for ATSUI might be
25 * Determine whether a byte is the first byte of a double-byte
26 * character in a system character set. Only MI use is by clipme()
27 * when copying direct-to-font text to the clipboard.
29 int is_dbcs_leadbyte(int codepage
, char byte
)
31 return 0; /* we don't do DBCS */
35 * Convert from Unicode to a system character set. MI uses are:
36 * (1) by lpage_send(), whose only MI use is to convert the answerback
37 * string to Unicode, and
38 * (2) by clipme() when copying direct-to-font text to the clipboard.
40 int mb_to_wc(int codepage
, int flags
, char *mbstr
, int mblen
,
41 wchar_t *wcstr
, int wclen
)
44 while (mblen
> 0 && wclen
> 0) {
45 *wcstr
++ = (unsigned char) *mbstr
++;
46 mblen
--, wclen
--, ret
++;
48 return ret
; /* FIXME: check error codes! */
52 * Convert from a system character set to Unicode. Used by luni_send
53 * to convert Unicode into the line character set.
55 int wc_to_mb(int codepage
, int flags
, wchar_t *wcstr
, int wclen
,
56 char *mbstr
, int mblen
, char *defchr
, int *defused
)
61 while (mblen
> 0 && wclen
> 0) {
62 if (*wcstr
>= 0x100) {
70 *mbstr
++ = (unsigned char) *wcstr
;
72 mblen
--, wclen
--, ret
++;
74 return ret
; /* FIXME: check error codes! */
80 /* Find the line control characters. FIXME: this is not right. */
81 for (i
= 0; i
< 256; i
++)
82 if (i
< ' ' || (i
>= 0x7F && i
< 0xA0))
85 unitab_ctrl
[i
] = 0xFF;
87 for (i
= 0; i
< 256; i
++) {
88 unitab_line
[i
] = unitab_scoacs
[i
] = i
;
89 unitab_xterm
[i
] = (i
>= 0x5F && i
< 0x7F) ?
((i
+1) & 0x1F) : i
;