usr/src/usr.lib/libcurses/getch.c

/*
 * Copyright (c) 1981 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)getch.c     5.5 (Berkeley) 6/30/88";
#endif /* not lint */

# include       "curses.ext"

/*
 *      This routine reads in a character from the window.
 *
 */
wgetch(win)
reg WINDOW      *win; {

        reg bool        weset = FALSE;
        reg char        inp;

        if (!win->_scroll && (win->_flags&_FULLWIN)
            && win->_curx == win->_maxx - 1 && win->_cury == win->_maxy - 1)
                return ERR;
# ifdef DEBUG
        fprintf(outf, "WGETCH: _echoit = %c, _rawmode = %c\n", _echoit ? 'T' : 'F', _rawmode ? 'T' : 'F');
# endif
        if (_echoit && !_rawmode) {
                cbreak();
                weset++;
        }
        inp = getchar();
# ifdef DEBUG
        fprintf(outf,"WGETCH got '%s'\n",unctrl(inp));
# endif
        if (_echoit) {
                mvwaddch(curscr, win->_cury + win->_begy,
                        win->_curx + win->_begx, inp);
                waddch(win, inp);
        }
        if (weset)
                nocbreak();
        return inp;
}