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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 1.16 2010/12/19 01:34:04 tom Exp $")
43 
44 /*
45  * Insert the given character, updating the current location to simplify
46  * inserting a string.
47  */
48 NCURSES_EXPORT(int)
49 _nc_insert_wch(WINDOW *win, const cchar_t *wch)
50 {
51     int cells = wcwidth(CharOf(CHDEREF(wch)));
52     int cell;
53     int code = OK;
54 
55     if (cells < 0) {
56 	code = winsch(win, (chtype) CharOf(CHDEREF(wch)));
57     } else {
58 	if (cells == 0)
59 	    cells = 1;
60 
61 	if (win->_curx <= win->_maxx) {
62 	    struct ldat *line = &(win->_line[win->_cury]);
63 	    NCURSES_CH_T *end = &(line->text[win->_curx]);
64 	    NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
65 	    NCURSES_CH_T *temp2 = temp1 - cells;
66 
67 	    CHANGED_TO_EOL(line, win->_curx, win->_maxx);
68 	    while (temp1 > end)
69 		*temp1-- = *temp2--;
70 
71 	    *temp1 = _nc_render(win, *wch);
72 	    for (cell = 1; cell < cells; ++cell) {
73 		SetWidecExt(temp1[cell], cell);
74 	    }
75 
76 	    win->_curx++;
77 	}
78     }
79     return code;
80 }
81 
82 NCURSES_EXPORT(int)
83 wins_wch(WINDOW *win, const cchar_t *wch)
84 {
85     NCURSES_SIZE_T oy;
86     NCURSES_SIZE_T ox;
87     int code = ERR;
88 
89     T((T_CALLED("wins_wch(%p, %s)"), (void *) win, _tracecchar_t(wch)));
90 
91     if (win != 0) {
92 	oy = win->_cury;
93 	ox = win->_curx;
94 
95 	code = _nc_insert_wch(win, wch);
96 
97 	win->_curx = ox;
98 	win->_cury = oy;
99 	_nc_synchook(win);
100     }
101     returnCode(code);
102 }
103 
104 NCURSES_EXPORT(int)
105 wins_nwstr(WINDOW *win, const wchar_t *wstr, int n)
106 {
107     int code = ERR;
108     NCURSES_SIZE_T oy;
109     NCURSES_SIZE_T ox;
110     const wchar_t *cp;
111 
112     T((T_CALLED("wins_nwstr(%p,%s,%d)"),
113        (void *) win, _nc_viswbufn(wstr, n), n));
114 
115     if (win != 0
116 	&& wstr != 0) {
117 	if (n < 1)
118 	    n = (int) wcslen(wstr);
119 	code = OK;
120 	if (n > 0) {
121 	    SCREEN *sp = _nc_screen_of(win);
122 
123 	    oy = win->_cury;
124 	    ox = win->_curx;
125 	    for (cp = wstr; *cp && ((cp - wstr) < n); cp++) {
126 		int len = wcwidth(*cp);
127 
128 		if ((len >= 0 && len != 1) || !is7bits(*cp)) {
129 		    cchar_t tmp_cchar;
130 		    wchar_t tmp_wchar = *cp;
131 		    memset(&tmp_cchar, 0, sizeof(tmp_cchar));
132 		    (void) setcchar(&tmp_cchar,
133 				    &tmp_wchar,
134 				    WA_NORMAL,
135 				    0,
136 				    (void *) 0);
137 		    code = _nc_insert_wch(win, &tmp_cchar);
138 		} else {
139 		    /* tabs, other ASCII stuff */
140 		    code = _nc_insert_ch(sp, win, (chtype) (*cp));
141 		}
142 		if (code != OK)
143 		    break;
144 	    }
145 
146 	    win->_curx = ox;
147 	    win->_cury = oy;
148 	    _nc_synchook(win);
149 	}
150     }
151     returnCode(code);
152 }
153