\ vt100 key interpreter 17oct94py
\ Copyright (C) 1995,1996,1998 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Create translate $100 allot
translate $100 erase
Create transcode $100 allot
transcode $100 erase
: trans: ( char 'index' -- ) char translate + c! ;
: tcode ( char index -- ) transcode + c! ;
: vt100-decode ( max span addr pos1 -- max span addr pos2 flag )
key '[ = IF 0 base @ >r &10 base !
BEGIN key dup digit? WHILE nip swap &10 * + REPEAT
r> base !
dup '~ = IF drop transcode ELSE nip translate THEN
+ c@ dup IF decode THEN
ELSE 0 THEN ;
ctrl B trans: D
ctrl F trans: C
ctrl P trans: A
ctrl N trans: B
ctrl A 1 tcode
ctrl X 3 tcode
ctrl E 4 tcode
' vt100-decode ctrlkeys $1B cells + !