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28 
29 /****************************************************************************
30  * Author: Thomas Dickey                                                    *
31  ****************************************************************************/
32 
33 /*
34 **	lib_inwstr.c
35 **
36 **	The routines winnwstr() and winwstr().
37 **
38 */
39 
40 #include <curses.priv.h>
41 
42 MODULE_ID("$Id: lib_inwstr.c,v 1.5 2009/10/24 22:37:29 tom Exp $")
43 
44 NCURSES_EXPORT(int)
45 winnwstr(WINDOW *win, wchar_t *wstr, int n)
46 {
47     int row, col, inx;
48     int count = 0;
49     int last = 0;
50     cchar_t *text;
51     wchar_t wch;
52 
53     T((T_CALLED("winnwstr(%p,%p,%d)"), (void *) win, (void *) wstr, n));
54     if (wstr != 0) {
55 	if (win) {
56 	    getyx(win, row, col);
57 
58 	    text = win->_line[row].text;
59 	    while (count < n && count != ERR) {
60 		if (!isWidecExt(text[col])) {
61 		    for (inx = 0; (inx < CCHARW_MAX)
62 			 && ((wch = text[col].chars[inx]) != 0);
63 			 ++inx) {
64 			if (count + 1 > n) {
65 			    if ((count = last) == 0) {
66 				count = ERR;	/* error if we store nothing */
67 			    }
68 			    break;
69 			}
70 			wstr[count++] = wch;
71 		    }
72 		}
73 		last = count;
74 		if (++col > win->_maxx) {
75 		    break;
76 		}
77 	    }
78 	}
79 	if (count > 0) {
80 	    wstr[count] = '\0';
81 	    T(("winnwstr returns %s", _nc_viswbuf(wstr)));
82 	}
83     }
84     returnCode(count);
85 }
86 
87 /*
88  * X/Open says winwstr() returns OK if not ERR.  If that is not a blunder, it
89  * must have a null termination on the string (see above).  Unlike winnstr(),
90  * it does not define what happens for a negative count with winnwstr().
91  */
92 NCURSES_EXPORT(int)
93 winwstr(WINDOW *win, wchar_t *wstr)
94 {
95     int result = OK;
96     T((T_CALLED("winwstr(%p,%p)"), (void *) win, (void *) wstr));
97     if (winnwstr(win, wstr, CCHARW_MAX * (win->_maxx - win->_curx + 1)) == ERR)
98 	result = ERR;
99     returnCode(result);
100 }
101