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29 /****************************************************************************
30 * Author: Thomas E. Dickey *
31 ****************************************************************************/
36 ** The routine wgetn_wstr().
40 #include <curses.priv.h>
42 MODULE_ID("$Id: lib_get_wstr.c,v 1.15 2018/09/01 20:13:00 tom Exp $")
45 wadd_wint(WINDOW *win, wint_t *src)
50 wch[0] = (wchar_t) (*src);
52 setcchar(&tmp, wch, A_NORMAL, (short) 0, NULL);
53 return wadd_wch(win, &tmp);
57 * This wipes out the last character, no matter whether it was a tab, control
58 * or other character, and handles reverse wraparound.
61 WipeOut(WINDOW *win, int y, int x, wint_t *first, wint_t *last, int echoed)
71 for (n = 0; first[n] != 0; ++n) {
72 wadd_wint(win, first + n);
75 while (win->_cury < y1
76 || (win->_cury == y1 && win->_curx < x1))
77 waddch(win, (chtype) ' ');
86 wgetn_wstr(WINDOW *win, wint_t *str, int maxlen)
88 SCREEN *sp = _nc_screen_of(win);
90 bool oldnl, oldecho, oldraw, oldcbreak;
98 T((T_CALLED("wgetn_wstr(%p,%p, %d)"), (void *) win, (void *) str, maxlen));
103 maxlen = _nc_getstr_limit(maxlen);
105 _nc_get_tty_mode(&buf);
110 oldcbreak = sp->_cbreak;
116 erasec = (wint_t) erasechar();
117 killc = (wint_t) killchar();
121 if (is_wintouched(win) || (win->_flags & _HASMOVED))
124 while ((code = wget_wch(win, &ch)) != ERR) {
126 * Map special characters into key-codes.
144 if (code == KEY_CODE_YES) {
146 * Some terminals (the Wyse-50 is the most common) generate a \n
147 * from the down-arrow key. With this logic, it's the user's
148 * choice whether to set kcud=\n for wget_wch(); terminating
149 * *getn_wstr() with \n should work either way.
151 if (ch == KEY_DOWN || ch == KEY_ENTER) {
153 && win->_cury == win->_maxy
155 wechochar(win, (chtype) '\n');
158 if (ch == KEY_LEFT || ch == KEY_BACKSPACE) {
159 if (tmpstr > oldstr) {
160 tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
162 } else if (ch == KEY_EOL) {
163 while (tmpstr > oldstr) {
164 tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
169 } else if (tmpstr - oldstr >= maxlen) {
174 if (oldecho == TRUE) {
175 int oldy = win->_cury;
177 if (wadd_wint(win, tmpstr - 1) == ERR) {
179 * We can't really use the lower-right corner for input,
180 * since it'll mess up bookkeeping for erases.
182 win->_flags &= ~_WRAPPED;
183 waddch(win, (chtype) ' ');
184 tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
186 } else if (win->_flags & _WRAPPED) {
188 * If the last waddch forced a wrap & scroll, adjust our
189 * reference point for erasures.
192 && oldy == win->_maxy
193 && win->_cury == win->_maxy) {
198 win->_flags &= ~_WRAPPED;
206 win->_flags &= ~_WRAPPED;
207 if (win->_cury < win->_maxy)
211 /* Restore with a single I/O call, to fix minor asymmetry between
217 sp->_cbreak = oldcbreak;
219 (void) _nc_set_tty_mode(&buf);
223 if (tmpstr == oldstr) {
230 T(("wgetn_wstr returns %s", _nc_viswibuf(oldstr)));