1 /****************************************************************************
2  * Copyright 2020 Thomas E. Dickey                                          *
3  * Copyright 2002-2007,2009 Free Software Foundation, Inc.                  *
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29 
30 /****************************************************************************
31  * Author: Thomas Dickey                                                    *
32  ****************************************************************************/
33 
34 /*
35 **	lib_in_wchnstr.c
36 **
37 **	The routine win_wchnstr().
38 **
39 */
40 
41 #include <curses.priv.h>
42 
43 MODULE_ID("$Id: lib_in_wchnstr.c,v 1.9 2020/02/02 23:34:34 tom Exp $")
44 
45 NCURSES_EXPORT(int)
46 win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
47 {
48     int code = OK;
49 
50     T((T_CALLED("win_wchnstr(%p,%p,%d)"), (void *) win, (void *) wchstr, n));
51     if (win != 0
52 	&& wchstr != 0) {
53 	NCURSES_CH_T *src;
54 	int row, col;
55 	int j, k, limit;
56 
57 	getyx(win, row, col);
58 	limit = getmaxx(win) - col;
59 	src = &(win->_line[row].text[col]);
60 
61 	if (n < 0) {
62 	    n = limit;
63 	} else if (n > limit) {
64 	    n = limit;
65 	}
66 	for (j = k = 0; j < n; ++j) {
67 	    if (j == 0 || !WidecExt(src[j]) || isWidecBase(src[j])) {
68 		wchstr[k++] = src[j];
69 	    }
70 	}
71 	memset(&(wchstr[k]), 0, sizeof(*wchstr));
72 	T(("result = %s", _nc_viscbuf(wchstr, n)));
73     } else {
74 	code = ERR;
75     }
76     returnCode(code);
77 }
78