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28
29/****************************************************************************
30 * Author: Thomas Dickey                                                    *
31 ****************************************************************************/
32
33/*
34**	lib_in_wchnstr.c
35**
36**	The routine win_wchnstr().
37**
38*/
39
40#include <curses.priv.h>
41
42MODULE_ID("$Id: lib_in_wchnstr.c,v 1.7 2007/02/11 01:00:00 tom Exp $")
43
44NCURSES_EXPORT(int)
45win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
46{
47    int code = OK;
48
49    T((T_CALLED("win_wchnstr(%p,%p,%d)"), win, wchstr, n));
50    if (win != 0
51	&& wchstr != 0) {
52	NCURSES_CH_T *src;
53	int row, col;
54	int j, k, limit;
55
56	getyx(win, row, col);
57	limit = getmaxx(win) - col;
58	src = &(win->_line[row].text[col]);
59
60	if (n < 0) {
61	    n = limit;
62	} else if (n > limit) {
63	    n = limit;
64	}
65	for (j = k = 0; j < n; ++j) {
66	    if (j == 0 || !WidecExt(src[j]) || isWidecBase(src[j])) {
67		wchstr[k++] = src[j];
68	    }
69	}
70	memset(&(wchstr[k]), 0, sizeof(*wchstr));
71	T(("result = %s", _nc_viscbuf(wchstr, n)));
72    } else {
73	code = ERR;
74    }
75    returnCode(code);
76}
77