File:  [gforth] / gforth / kernel / accept.fs
Revision 1.2: download - view: text, annotated - select for diffs
Tue Dec 8 22:03:08 1998 UTC (23 years, 10 months ago) by anton
Branches: MAIN
CVS tags: v0-4-0, HEAD
updated dates in copyright messages
inserted copyright messages in most files that did not have them
removed outdated files engine/32bit.h engine/strsig.c

    1: \ Input                                                13feb93py
    2: 
    3: \ Copyright (C) 1995,1996,1997 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: : (ins) ( max span addr pos1 key -- max span addr pos2 )
   22:     >r 2dup + r@ swap c! r> emit 1+ rot 1+ -rot ;
   23: : (bs) ( max span addr pos1 -- max span addr pos2 flag )
   24:     dup IF
   25: 	#bs emit bl emit #bs emit 1- rot 1- -rot
   26:     THEN false ;
   27: : (ret)  true bl emit ;
   28: 
   29: Create ctrlkeys
   30:   ] false false false false  false false false false
   31:     (bs)  false (ret) false  false (ret) false false
   32:     false false false false  false false false false
   33:     false false false false  false false false false [
   34: 
   35: defer insert-char
   36: ' (ins) IS insert-char
   37: defer everychar
   38: ' noop IS everychar
   39: 
   40: : decode ( max span addr pos1 key -- max span addr pos2 flag )
   41:   everychar
   42:   dup #del = IF  drop #bs  THEN  \ del is rubout
   43:   dup bl <   IF  cells ctrlkeys + perform  EXIT  THEN
   44:   >r 2over = IF  rdrop bell 0 EXIT  THEN
   45:   r> insert-char 0 ;
   46: 
   47: : accept   ( addr len -- len ) \ core
   48:   dup 0< IF    abs over dup 1 chars - c@ tuck type 
   49: \ this allows to edit given strings
   50:   ELSE  0  THEN rot over
   51:   BEGIN  key decode  UNTIL
   52:   2drop nip ;
   53: 

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