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added copyright headers
changes to loadfilename & co. to make savesystem transparent to
 assertions and ~~

    1: /* Input driver header
    2: 
    3:   Copyright (C) 1995 Free Software Foundation, Inc.
    4: 
    5:   This file is part of Gforth.
    6: 
    7:   Gforth is free software; you can redistribute it and/or
    8:   modify it under the terms of the GNU General Public License
    9:   as published by the Free Software Foundation; either version 2
   10:   of the License, or (at your option) any later version.
   11: 
   12:   This program is distributed in the hope that it will be useful,
   13:   but WITHOUT ANY WARRANTY; without even the implied warranty of
   14:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15:   GNU General Public License for more details.
   16: 
   17:   You should have received a copy of the GNU General Public License
   18:   along with this program; if not, write to the Free Software
   19:   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   20: */
   21: 
   22: #include <setjmp.h>
   23: 
   24: extern jmp_buf throw_jmp_buf;
   25: 
   26: #ifdef MSDOS
   27: #  define prep_terminal()
   28: #  define deprep_terminal()
   29: #  define install_signal_handlers()
   30: 
   31: #  include <conio.h>
   32: 
   33: #  define key()		getch()
   34: #  define key_query       FLAG(kbhit())
   35: #else
   36: unsigned char getkey(FILE *);
   37: long key_avail(FILE *);
   38: void prep_terminal();
   39: void deprep_terminal();
   40: void install_signal_handlers(void);
   41: 
   42: #  define key()		getkey(stdin)
   43: #  define key_query	-(!!key_avail(stdin)) /* !! FLAG(...)? - anton */
   44:          		/* flag was originally wrong -- lennart */
   45: #endif