+MODULE_ID("$Id: lib_slkset.c,v 1.24 2012/12/08 23:09:25 tom Exp $")
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(slk_set) (NCURSES_SP_DCLx int i, const char *astr, int format)
+{
+ SLK *slk;
+ int offset = 0;
+ int numchrs;
+ int numcols;
+ int limit;
+ const char *str = astr;
+ const char *p;
+
+ T((T_CALLED("slk_set(%p, %d, \"%s\", %d)"), (void *) SP_PARM, i, str, format));
+
+ if (SP_PARM == 0
+ || (slk = SP_PARM->_slk) == 0
+ || i < 1
+ || i > slk->labcnt
+ || format < 0
+ || format > 2)
+ returnCode(ERR);
+ if (str == 0)
+ str = "";
+ --i; /* Adjust numbering of labels */
+
+ limit = MAX_SKEY_LEN(SP_PARM->slk_format);
+ while (isspace(UChar(*str)))
+ str++; /* skip over leading spaces */
+ p = str;
+
+#if USE_WIDEC_SUPPORT
+ numcols = 0;
+ while (*p != 0) {
+ mbstate_t state;
+ wchar_t wc;
+ size_t need;
+
+ init_mb(state);
+ need = mbrtowc(0, p, strlen(p), &state);
+ if (need == (size_t) -1)
+ break;
+ mbrtowc(&wc, p, need, &state);
+ if (!iswprint((wint_t) wc))
+ break;
+ if (wcwidth(wc) + numcols > limit)
+ break;
+ numcols += wcwidth(wc);
+ p += need;
+ }
+ numchrs = (int) (p - str);
+#else
+ while (isprint(UChar(*p)))
+ p++; /* The first non-print stops */
+
+ numcols = (int) (p - str);
+ if (numcols > limit)
+ numcols = limit;
+ numchrs = numcols;
+#endif
+
+ FreeIfNeeded(slk->ent[i].ent_text);
+ if ((slk->ent[i].ent_text = strdup(str)) == 0)
+ returnCode(ERR);
+ slk->ent[i].ent_text[numchrs] = '\0';
+
+ if ((slk->ent[i].form_text = (char *) _nc_doalloc(slk->ent[i].form_text,
+ (size_t) (limit +
+ numchrs + 1))
+ ) == 0)
+ returnCode(ERR);
+
+ switch (format) {
+ case 0: /* left-justified */
+ offset = 0;
+ break;
+ case 1: /* centered */
+ offset = (limit - numcols) / 2;
+ break;
+ case 2: /* right-justified */
+ offset = limit - numcols;
+ break;
+ }
+ if (offset <= 0)
+ offset = 0;
+ else
+ memset(slk->ent[i].form_text, ' ', (size_t) offset);
+
+ memcpy(slk->ent[i].form_text + offset,
+ slk->ent[i].ent_text,
+ (size_t) numchrs);
+
+ if (offset < limit) {
+ memset(slk->ent[i].form_text + offset + numchrs,
+ ' ',
+ (size_t) (limit - (offset + numcols)));
+ }
+
+ slk->ent[i].form_text[numchrs - numcols + limit] = 0;
+ slk->ent[i].dirty = TRUE;
+ returnCode(OK);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)