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32 ** The routines setcchar() and getcchar().
36 #include <curses.priv.h>
38 MODULE_ID("$Id: lib_cchar.c,v 1.8 2003/05/25 00:07:41 tom Exp $")
41 * The SuSv2 description leaves some room for interpretation. We'll assume wch
42 * is L'\0' terminated, contains at most one character with strictly positive
43 * width, which must be the first, and contains no characters of negative
47 setcchar(cchar_t * wcval, const wchar_t * wch, const attr_t attrs,
48 short color_pair, const void *opts)
54 TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,%ld,%d,%p)"),
55 wcval, _nc_viswbuf(wch), attrs, color_pair, opts));
57 if (opts != NULL || (len = wcslen(wch)) > CCHARW_MAX
58 || (len > 1 && wcwidth(wch[0]) < 0)) {
63 * If we have a following spacing-character, stop at that point. We
64 * are only interested in adding non-spacing characters.
66 for (i = 1; i < len; ++i) {
67 if (wcwidth(wch[i]) != 0) {
73 memset(wcval, 0, sizeof(*wcval));
76 SetAttr(*wcval, attrs | color_pair);
77 memcpy(&wcval->chars, wch, len * sizeof(wchar_t));
78 TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len,
79 _tracecchar_t(wcval)));
83 TR(TRACE_CCALLS, (T_RETURN("%d"), code));
88 getcchar(const cchar_t * wcval, wchar_t * wch, attr_t * attrs,
89 short *color_pair, void *opts)
95 TR(TRACE_CCALLS, (T_CALLED("getcchar(%p,%p,%p,%p,%p)"),
96 wcval, wch, attrs, color_pair, opts));
99 len = (wp = wmemchr(wcval->chars, L'\0', CCHARW_MAX))
105 } else if (attrs == 0 || color_pair == 0) {
107 } else if (len >= 0) {
108 *attrs = AttrOf(*wcval);
109 *color_pair = AttrOf(*wcval) & A_COLOR;
110 wmemcpy(wch, wcval->chars, (unsigned) len);
116 TR(TRACE_CCALLS, (T_RETURN("%d"), code));