gforth: gforth/kernel/saccept.fs

1 :	anton	1.1	\ a very simple accept approach
2 :
3 :	anton	1.3	\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
4 :	anton	1.1
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 :	pazsan	1.2	: accept ( adr len -- len )
22 :	anton	1.1	over + over ( start end pnt )
23 :			BEGIN
24 :	pazsan	1.2	key dup #del = IF drop #bs THEN
25 :	anton	1.1	dup bl u<
26 :	pazsan	1.2	IF dup #cr = over #lf = or IF space drop nip swap - EXIT THEN
27 :			#bs = IF 3 pick over <>
28 :			IF 1 chars - #bs emit bl emit #bs emit ELSE bell THEN THEN
29 :			ELSE >r 2dup <> IF r> dup emit over c! char+ ELSE r> drop bell THEN
30 :	anton	1.1	THEN
31 :			AGAIN ;
32 :