1 /* $Id: macucs.c,v 1.7 2003/04/05 22:12:44 ben Exp $ */
14 * Mac Unicode-handling routines.
16 * FIXME: currently trivial stub versions assuming all codepages
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
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.
30 int is_dbcs_leadbyte(int codepage, char byte)
32 return 0; /* we don't do DBCS */
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.
41 int mb_to_wc(int codepage, int flags, char *mbstr, int mblen,
42 wchar_t *wcstr, int wclen)
45 while (mblen > 0 && wclen > 0) {
46 *wcstr++ = (unsigned char) *mbstr++;
47 mblen--, wclen--, ret++;
49 return ret; /* FIXME: check error codes! */
53 * Convert from a system character set to Unicode. Used by luni_send
54 * to convert Unicode into the line character set.
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)
63 while (mblen > 0 && wclen > 0) {
64 if (*wcstr >= 0x100) {
72 *mbstr++ = (unsigned char) *wcstr;
74 mblen--, wclen--, ret++;
76 return ret; /* FIXME: check error codes! */
79 /* Character conversion array,
80 * the xterm one has the four scanlines that have no unicode 2.0
81 * equivalents mapped to their unicode 3.0 locations.
83 static const wchar_t unitab_xterm_std[32] = {
84 0x2666, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,
85 0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba,
86 0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c,
87 0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x0020
90 void init_ucs(Session *s)
94 /* Find the line control characters. FIXME: this is not right. */
95 for (i = 0; i < 256; i++)
96 if (i < ' ' || (i >= 0x7F && i < 0xA0))
97 s->ucsdata.unitab_ctrl[i] = i;
99 s->ucsdata.unitab_ctrl[i] = 0xFF;
101 for (i = 0; i < 256; i++)
102 s->ucsdata.unitab_line[i] = s->ucsdata.unitab_scoacs[i] = i;
104 /* VT100 graphics - NB: Broken for non-ascii CP's */
105 memcpy(s->ucsdata.unitab_xterm, s->ucsdata.unitab_line,
106 sizeof(s->ucsdata.unitab_xterm));
107 memcpy(s->ucsdata.unitab_xterm + '`', unitab_xterm_std,
108 sizeof(unitab_xterm_std));
109 s->ucsdata.unitab_xterm['_'] = ' ';
113 int decode_codepage(char *cp_name)
119 char const *cp_enumerate (int index)
122 if (index == 0) return "ISO/IEC 8859-1";
126 char const *cp_name(int codepage)
129 return "ISO/IEC 8859-1";