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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 1.27 2008/08/16 19:20:04 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_events(WINDOW *win,
76 EVENTLIST_1st(_nc_eventlist * evl))
78 SCREEN *sp = _nc_screen_of(win);
80 bool oldnl, oldecho, oldraw, oldcbreak;
87 T((T_CALLED("wgetnstr(%p,%p, %d)"), win, str, maxlen));
92 _nc_get_tty_mode(&buf);
97 oldcbreak = sp->_cbreak;
103 erasec = erasechar();
109 if (is_wintouched(win) || (win->_flags & _HASMOVED))
112 while ((ch = wgetch_events(win, evl)) != ERR) {
114 * Some terminals (the Wyse-50 is the most common) generate
115 * a \n from the down-arrow key. With this logic, it's the
116 * user's choice whether to set kcud=\n for wgetch();
117 * terminating *getstr() with \n should work either way.
122 || ch == KEY_ENTER) {
124 && win->_cury == win->_maxy
126 wechochar(win, (chtype) '\n');
134 if (ch == KEY_RESIZE)
137 if (ch == erasec || ch == KEY_LEFT || ch == KEY_BACKSPACE) {
139 str = WipeOut(win, y, x, oldstr, str, oldecho);
141 } else if (ch == killc) {
142 while (str > oldstr) {
143 str = WipeOut(win, y, x, oldstr, str, oldecho);
145 } else if (ch >= KEY_MIN
146 || (maxlen >= 0 && str - oldstr >= maxlen)) {
150 if (oldecho == TRUE) {
151 int oldy = win->_cury;
152 if (waddch(win, (chtype) ch) == ERR) {
154 * We can't really use the lower-right
155 * corner for input, since it'll mess
156 * up bookkeeping for erases.
158 win->_flags &= ~_WRAPPED;
159 waddch(win, (chtype) ' ');
160 str = WipeOut(win, y, x, oldstr, str, oldecho);
162 } else if (win->_flags & _WRAPPED) {
164 * If the last waddch forced a wrap &
165 * scroll, adjust our reference point
169 && oldy == win->_maxy
170 && win->_cury == win->_maxy) {
175 win->_flags &= ~_WRAPPED;
183 win->_flags &= ~_WRAPPED;
184 if (win->_cury < win->_maxy)
188 /* Restore with a single I/O call, to fix minor asymmetry between
194 sp->_cbreak = oldcbreak;
196 _nc_set_tty_mode(&buf);
202 T(("wgetnstr returns %s", _nc_visbuf(oldstr)));
209 if (ch == KEY_RESIZE)
216 #ifdef NCURSES_WGETCH_EVENTS
218 wgetnstr(WINDOW *win, char *str, int maxlen)
220 returnCode(wgetnstr_events(win,
223 EVENTLIST_1st((_nc_eventlist *) 0)));