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2 * Copyright (c) 1998-2009,2011 Free Software Foundation, Inc. *
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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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>
43 MODULE_ID("$Id: lib_getstr.c,v 1.30 2011/10/22 16:31:35 tom Exp $")
46 * This wipes out the last character, no matter whether it was a tab, control
47 * or other character, and handles reverse wraparound.
50 WipeOut(WINDOW *win, int y, int x, char *first, char *last, int echoed)
61 while (win->_cury < y1
62 || (win->_cury == y1 && win->_curx < x1))
63 waddch(win, (chtype) ' ');
72 wgetnstr_events(WINDOW *win,
75 EVENTLIST_1st(_nc_eventlist * evl))
77 SCREEN *sp = _nc_screen_of(win);
79 bool oldnl, oldecho, oldraw, oldcbreak;
86 T((T_CALLED("wgetnstr(%p,%p,%d)"), (void *) win, (void *) str, maxlen));
91 NCURSES_SP_NAME(_nc_get_tty_mode) (NCURSES_SP_ARGx &buf);
96 oldcbreak = sp->_cbreak;
97 NCURSES_SP_NAME(nl) (NCURSES_SP_ARG);
98 NCURSES_SP_NAME(noecho) (NCURSES_SP_ARG);
99 NCURSES_SP_NAME(noraw) (NCURSES_SP_ARG);
100 NCURSES_SP_NAME(cbreak) (NCURSES_SP_ARG);
102 erasec = NCURSES_SP_NAME(erasechar) (NCURSES_SP_ARG);
103 killc = NCURSES_SP_NAME(killchar) (NCURSES_SP_ARG);
108 if (is_wintouched(win) || (win->_flags & _HASMOVED))
111 while ((ch = wgetch_events(win, evl)) != ERR) {
113 * Some terminals (the Wyse-50 is the most common) generate
114 * a \n from the down-arrow key. With this logic, it's the
115 * user's choice whether to set kcud=\n for wgetch();
116 * terminating *getstr() with \n should work either way.
121 || ch == KEY_ENTER) {
123 && win->_cury == win->_maxy
125 wechochar(win, (chtype) '\n');
133 if (ch == KEY_RESIZE)
136 if (ch == erasec || ch == KEY_LEFT || ch == KEY_BACKSPACE) {
138 str = WipeOut(win, y, x, oldstr, str, oldecho);
140 } else if (ch == killc) {
141 while (str > oldstr) {
142 str = WipeOut(win, y, x, oldstr, str, oldecho);
144 } else if (ch >= KEY_MIN
145 || (maxlen >= 0 && str - oldstr >= maxlen)) {
146 NCURSES_SP_NAME(beep) (NCURSES_SP_ARG);
149 if (oldecho == TRUE) {
150 int oldy = win->_cury;
151 if (waddch(win, (chtype) ch) == ERR) {
153 * We can't really use the lower-right
154 * corner for input, since it'll mess
155 * up bookkeeping for erases.
157 win->_flags &= ~_WRAPPED;
158 waddch(win, (chtype) ' ');
159 str = WipeOut(win, y, x, oldstr, str, oldecho);
161 } else if (win->_flags & _WRAPPED) {
163 * If the last waddch forced a wrap &
164 * scroll, adjust our reference point
168 && oldy == win->_maxy
169 && win->_cury == win->_maxy) {
174 win->_flags &= ~_WRAPPED;
182 win->_flags &= ~_WRAPPED;
183 if (win->_cury < win->_maxy)
187 /* Restore with a single I/O call, to fix minor asymmetry between
193 sp->_cbreak = oldcbreak;
195 NCURSES_SP_NAME(_nc_set_tty_mode) (NCURSES_SP_ARGx &buf);
201 T(("wgetnstr returns %s", _nc_visbuf(oldstr)));
208 if (ch == KEY_RESIZE)
215 #ifdef NCURSES_WGETCH_EVENTS
217 wgetnstr(WINDOW *win, char *str, int maxlen)
219 returnCode(wgetnstr_events(win,
222 EVENTLIST_1st((_nc_eventlist *) 0)));