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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
37 ** The routine wgetstr().
41 #include <curses.priv.h>
44 MODULE_ID("$Id: lib_getstr.c,v 1.23 2000/12/10 02:43:27 tom Exp $")
47 * This wipes out the last character, no matter whether it was a tab, control
48 * or other character, and handles reverse wraparound.
51 WipeOut(WINDOW *win, int y, int x, char *first, char *last, bool echoed)
62 while (win->_cury < y1
63 || (win->_cury == y1 && win->_curx < x1))
64 waddch(win, (chtype) ' ');
73 wgetnstr(WINDOW *win, char *str, int maxlen)
76 bool oldnl, oldecho, oldraw, oldcbreak;
83 T((T_CALLED("wgetnstr(%p,%p, %d)"), win, str, maxlen));
88 _nc_get_tty_mode(&buf);
93 oldcbreak = SP->_cbreak;
105 if (is_wintouched(win) || (win->_flags & _HASMOVED))
108 while ((ch = wgetch(win)) != ERR) {
110 * Some terminals (the Wyse-50 is the most common) generate
111 * a \n from the down-arrow key. With this logic, it's the
112 * user's choice whether to set kcud=\n for wgetch();
113 * terminating *getstr() with \n should work either way.
118 || ch == KEY_ENTER) {
120 && win->_cury == win->_maxy
122 wechochar(win, (chtype) '\n');
125 if (ch == erasec || ch == KEY_LEFT || ch == KEY_BACKSPACE) {
127 str = WipeOut(win, y, x, oldstr, str, oldecho);
129 } else if (ch == killc) {
130 while (str > oldstr) {
131 str = WipeOut(win, y, x, oldstr, str, oldecho);
133 } else if (ch >= KEY_MIN
134 || (maxlen >= 0 && str - oldstr >= maxlen)) {
138 if (oldecho == TRUE) {
139 int oldy = win->_cury;
140 if (waddch(win, (chtype) ch) == ERR) {
142 * We can't really use the lower-right
143 * corner for input, since it'll mess
144 * up bookkeeping for erases.
146 win->_flags &= ~_WRAPPED;
147 waddch(win, (chtype) ' ');
148 str = WipeOut(win, y, x, oldstr, str, oldecho);
150 } else if (win->_flags & _WRAPPED) {
152 * If the last waddch forced a wrap &
153 * scroll, adjust our reference point
157 && oldy == win->_maxy
158 && win->_cury == win->_maxy) {
163 win->_flags &= ~_WRAPPED;
171 win->_flags &= ~_WRAPPED;
172 if (win->_cury < win->_maxy)
176 /* Restore with a single I/O call, to fix minor asymmetry between
182 SP->_cbreak = oldcbreak;
184 _nc_set_tty_mode(&buf);
190 T(("wgetnstr returns %s", _nc_visbuf(oldstr)));