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32 ** The routines setcchar() and getcchar().
36 #include <curses.priv.h>
38 MODULE_ID("$Id: lib_cchar.c,v 1.12 2007/05/12 19:03:06 tom Exp $")
41 * The SuSv2 description leaves some room for interpretation. We'll assume wch
42 * points to a string which is L'\0' terminated, contains at least one
43 * character with strictly positive width, which must be the first, and
44 * contains no characters of negative width.
47 setcchar(cchar_t *wcval,
57 TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,%lu,%d,%p)"),
58 wcval, _nc_viswbuf(wch),
59 (unsigned long) attrs, color_pair, opts));
63 || (len > 1 && wcwidth(wch[0]) < 0)) {
70 * If we have a following spacing-character, stop at that point. We
71 * are only interested in adding non-spacing characters.
73 for (i = 1; i < len; ++i) {
74 if (wcwidth(wch[i]) != 0) {
80 memset(wcval, 0, sizeof(*wcval));
83 SetAttr(*wcval, attrs | COLOR_PAIR(color_pair));
84 SetPair(CHDEREF(wcval), color_pair);
85 memcpy(&wcval->chars, wch, len * sizeof(wchar_t));
86 TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len,
87 _tracecchar_t(wcval)));
91 TR(TRACE_CCALLS, (T_RETURN("%d"), code));
96 getcchar(const cchar_t *wcval,
106 TR(TRACE_CCALLS, (T_CALLED("getcchar(%p,%p,%p,%p,%p)"),
107 wcval, wch, attrs, color_pair, opts));
110 len = (wp = wmemchr(wcval->chars, L'\0', CCHARW_MAX))
116 } else if (attrs == 0 || color_pair == 0) {
118 } else if (len >= 0) {
119 *attrs = AttrOf(*wcval) & A_ATTRIBUTES;
120 *color_pair = GetPair(*wcval);
121 wmemcpy(wch, wcval->chars, (unsigned) len);
127 TR(TRACE_CCALLS, (T_RETURN("%d"), code));