\ VT100.STR VT100 excape sequences 20may93jaw
\ Copyright (C) 1995,1999,2000,2003,2007,2012 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 3
\ 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, see http://www.gnu.org/licenses/.
decimal
: pn base @ swap decimal 0 u.r base ! ;
: ;pn [char] ; emit pn ;
: ESC[ 27 emit [char] [ emit ;
Defer at-xy
Defer page
: vt100-at-xy ( u1 u2 -- ) \ facility at-x-y
\G Position the cursor so that subsequent text output will take
\G place at column @var{u1}, row @var{u2} of the display. (column 0,
\G row 0 is the top left-hand corner of the display).
1+ swap 1+ swap ESC[ pn ;pn [char] H emit ;
: vt100-page ( -- ) \ facility
\G Clear the display and set the cursor to the top left-hand
\G corner.
ESC[ ." 2J" 0 0 at-xy ;
' vt100-at-xy IS at-xy
' vt100-page IS page
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