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28 
29 /****************************************************************************
30  *  Author: Thomas Dickey 2002                                              *
31  ****************************************************************************/
32 
33 /*
34 **	lib_ins_wch.c
35 **
36 **	The routine wins_wch().
37 **
38 */
39 
40 #include <curses.priv.h>
41 
42 MODULE_ID("$Id: lib_ins_wch.c,v 1.8 2005/12/03 20:24:19 tom Exp $")
43 
44 /*
45  * Insert the given character, updating the current location to simplify
46  * inserting a string.
47  */
48 static int
49 _nc_insert_wch(WINDOW *win, const cchar_t *wch)
50 {
51     int cells = wcwidth(CharOf(CHDEREF(wch)));
52     int cell;
53 
54     if (cells <= 0)
55 	cells = 1;
56 
57     if (win->_curx <= win->_maxx) {
58 	struct ldat *line = &(win->_line[win->_cury]);
59 	NCURSES_CH_T *end = &(line->text[win->_curx]);
60 	NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
61 	NCURSES_CH_T *temp2 = temp1 - cells;
62 
63 	CHANGED_TO_EOL(line, win->_curx, win->_maxx);
64 	while (temp1 > end)
65 	    *temp1-- = *temp2--;
66 
67 	*temp1 = _nc_render(win, *wch);
68 	for (cell = 1; cell < cells; ++cell) {
69 	    SetWidecExt(temp1[cell], cell);
70 	}
71 
72 	win->_curx++;
73     }
74     return OK;
75 }
76 
77 NCURSES_EXPORT(int)
78 wins_wch(WINDOW *win, const cchar_t *wch)
79 {
80     NCURSES_SIZE_T oy;
81     NCURSES_SIZE_T ox;
82     int code = ERR;
83 
84     T((T_CALLED("wins_wch(%p, %s)"), win, _tracecchar_t(wch)));
85 
86     if (win != 0) {
87 	oy = win->_cury;
88 	ox = win->_curx;
89 
90 	code = _nc_insert_wch(win, wch);
91 
92 	win->_curx = ox;
93 	win->_cury = oy;
94 	_nc_synchook(win);
95     }
96     returnCode(code);
97 }
98 
99 NCURSES_EXPORT(int)
100 wins_nwstr(WINDOW *win, const wchar_t *wstr, int n)
101 {
102     int code = ERR;
103     NCURSES_SIZE_T oy;
104     NCURSES_SIZE_T ox;
105     const wchar_t *cp;
106 
107     T((T_CALLED("wins_nwstr(%p,%s,%d)"), win, _nc_viswbufn(wstr, n), n));
108 
109     if (win != 0
110 	&& wstr != 0) {
111 	if (n < 1)
112 	    n = wcslen(wstr);
113 	code = OK;
114 	if (n > 0) {
115 	    oy = win->_cury;
116 	    ox = win->_curx;
117 	    for (cp = wstr; *cp && ((cp - wstr) < n); cp++) {
118 		int len = wcwidth(*cp);
119 
120 		if (len != 1 || !is8bits(*cp)) {
121 		    cchar_t tmp_cchar;
122 		    wchar_t tmp_wchar = *cp;
123 		    memset(&tmp_cchar, 0, sizeof(tmp_cchar));
124 		    (void) setcchar(&tmp_cchar,
125 				    &tmp_wchar,
126 				    WA_NORMAL,
127 				    0,
128 				    (void *) 0);
129 		    code = _nc_insert_wch(win, &tmp_cchar);
130 		} else {
131 		    /* tabs, other ASCII stuff */
132 		    code = _nc_insert_ch(win, (chtype) (*cp));
133 		}
134 		if (code != OK)
135 		    break;
136 	    }
137 
138 	    win->_curx = ox;
139 	    win->_cury = oy;
140 	    _nc_synchook(win);
141 	}
142     }
143     returnCode(code);
144 }
145