1 /* $OpenBSD: lib_in_wchnstr.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */
2 
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30 
31 /****************************************************************************
32  * Author: Thomas Dickey                                                    *
33  ****************************************************************************/
34 
35 /*
36 **	lib_in_wchnstr.c
37 **
38 **	The routine win_wchnstr().
39 **
40 */
41 
42 #include <curses.priv.h>
43 
44 MODULE_ID("$Id: lib_in_wchnstr.c,v 1.1 2010/09/06 17:26:17 nicm Exp $")
45 
46 NCURSES_EXPORT(int)
47 win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
48 {
49     int code = OK;
50 
51     T((T_CALLED("win_wchnstr(%p,%p,%d)"), win, wchstr, n));
52     if (win != 0
53 	&& wchstr != 0) {
54 	NCURSES_CH_T *src;
55 	int row, col;
56 	int j, k, limit;
57 
58 	getyx(win, row, col);
59 	limit = getmaxx(win) - col;
60 	src = &(win->_line[row].text[col]);
61 
62 	if (n < 0) {
63 	    n = limit;
64 	} else if (n > limit) {
65 	    n = limit;
66 	}
67 	for (j = k = 0; j < n; ++j) {
68 	    if (j == 0 || !WidecExt(src[j]) || isWidecBase(src[j])) {
69 		wchstr[k++] = src[j];
70 	    }
71 	}
72 	memset(&(wchstr[k]), 0, sizeof(*wchstr));
73 	T(("result = %s", _nc_viscbuf(wchstr, n)));
74     } else {
75 	code = ERR;
76     }
77     returnCode(code);
78 }
79