File:  [gforth] / gforth / termsize.fs
Revision 1.1: download - view: text, annotated - select for diffs
Sun Jan 7 17:22:16 1996 UTC (25 years ago) by anton
Branches: MAIN
CVS tags: HEAD
added more.fs for people with old terminals.
WORDS and SEE now now respect the terminal size.
a lot of reordering in the Makefile, approaching the GNU standards.
factored NAME>STRING out of many words.
use AC_DECL_SYS_SIGLIST test in configure.in.
removed emitcounter (it was not used anyway).
SYSTEM now unpreps and repreps the terminal.
fixed byg in prims2x.fs.
added NEEDS, ?CSP, !CSP.
rewrote ALIAS?.

    1: \ terminal size stuff
    2: 
    3: \ Copyright (C) 1996 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: 
   22: \ Currently we get the size from the environment. If the variables
   23: \ LINES and COLUMNS are not set or wrong, do an "eval `resize`" before
   24: \ starting Gforth. If you change the window size after starting
   25: \ Gforth, you are out of luck.
   26: 
   27: \ To do: An implementation that uses termcap and/or ioctl TIOCGWINSZ.
   28: 
   29: \ # rows and columns that the terminal has.
   30: \ these words are also present in PFE.
   31: &80 Value cols
   32: &24 Value rows
   33: 
   34: : getenv-unum ( udefault c-addr ucount -- u )
   35:     getenv over
   36:     IF
   37: 	0. 2swap >number 0=
   38: 	IF ( udefault d c-addr2 )
   39: 	    drop drop nip
   40: 	ELSE ( udefault djunk c-addr2 )
   41: 	    drop 2drop
   42: 	ENDIF
   43:     ELSE ( udefault c-addr ucount )
   44: 	2drop
   45:     ENDIF ;
   46: 
   47: :noname ( -- )
   48:     defers 'cold
   49:     cols s" COLUMNS" getenv-unum TO cols
   50:     rows s" LINES" getenv-unum TO rows ;
   51: IS 'cold

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