Update for Unicode deglobalisations.
[u/mdw/putty] / mac / macucs.c
1 /* $Id: macucs.c,v 1.4 2003/01/14 19:42:00 ben Exp $ */
2
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <ctype.h>
6
7 #include <time.h>
8 #include "putty.h"
9 #include "terminal.h"
10 #include "misc.h"
11 #include "mac.h"
12
13 /*
14 * Mac Unicode-handling routines.
15 *
16 * FIXME: currently trivial stub versions assuming all codepages
17 * are ISO8859-1.
18 *
19 * What we _should_ do is to use the Text Encoding Conversion Manager
20 * when it's available, and have our own routines for converting to
21 * standard Mac OS scripts when it's not. Support for ATSUI might be
22 * nice, too.
23 */
24
25 /*
26 * Determine whether a byte is the first byte of a double-byte
27 * character in a system character set. Only MI use is by clipme()
28 * when copying direct-to-font text to the clipboard.
29 */
30 int is_dbcs_leadbyte(int codepage, char byte)
31 {
32 return 0; /* we don't do DBCS */
33 }
34
35 /*
36 * Convert from Unicode to a system character set. MI uses are:
37 * (1) by lpage_send(), whose only MI use is to convert the answerback
38 * string to Unicode, and
39 * (2) by clipme() when copying direct-to-font text to the clipboard.
40 */
41 int mb_to_wc(int codepage, int flags, char *mbstr, int mblen,
42 wchar_t *wcstr, int wclen)
43 {
44 int ret = 0;
45 while (mblen > 0 && wclen > 0) {
46 *wcstr++ = (unsigned char) *mbstr++;
47 mblen--, wclen--, ret++;
48 }
49 return ret; /* FIXME: check error codes! */
50 }
51
52 /*
53 * Convert from a system character set to Unicode. Used by luni_send
54 * to convert Unicode into the line character set.
55 */
56 int wc_to_mb(int codepage, int flags, wchar_t *wcstr, int wclen,
57 char *mbstr, int mblen, char *defchr, int *defused,
58 struct unicode_data *ucsdata)
59 {
60 int ret = 0;
61 if (defused)
62 *defused = 0;
63 while (mblen > 0 && wclen > 0) {
64 if (*wcstr >= 0x100) {
65 if (defchr)
66 *mbstr++ = *defchr;
67 else
68 *mbstr++ = '.';
69 if (defused)
70 *defused = 1;
71 } else
72 *mbstr++ = (unsigned char) *wcstr;
73 wcstr++;
74 mblen--, wclen--, ret++;
75 }
76 return ret; /* FIXME: check error codes! */
77 }
78
79 void init_ucs(Session *s)
80 {
81 int i;
82
83 /* Find the line control characters. FIXME: this is not right. */
84 for (i = 0; i < 256; i++)
85 if (i < ' ' || (i >= 0x7F && i < 0xA0))
86 s->ucsdata.unitab_ctrl[i] = i;
87 else
88 s->ucsdata.unitab_ctrl[i] = 0xFF;
89
90 for (i = 0; i < 256; i++) {
91 s->ucsdata.unitab_line[i] = s->ucsdata.unitab_scoacs[i] = i;
92 s->ucsdata.unitab_xterm[i] =
93 (i >= 0x5F && i < 0x7F) ? ((i+1) & 0x1F) : i;
94 }
95 }