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Annotation of gforth/kernel/saccept.fs, revision 1.3

1.1       anton       1: \ a very simple accept approach
                      2: 
1.3     ! anton       3: \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
1.1       anton       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: 
1.2       pazsan     21: : accept ( adr len -- len )
1.1       anton      22:   over + over ( start end pnt )
                     23:   BEGIN
1.2       pazsan     24:    key dup #del = IF drop #bs THEN
1.1       anton      25:    dup bl u<
1.2       pazsan     26:    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
1.1       anton      30:    THEN 
                     31:   AGAIN ;
                     32: