Annotation of gforth/ansi.fs, revision 1.10

1.6       crook       1: \ ansi.fs      Define terminal attributes              20may93jaw
1.1       pazsan      2: 
1.10    ! anton       3: \ Copyright (C) 1995,1996,1997,1998,2001,2003,2007 Free Software Foundation, Inc.
1.2       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
1.9       anton       9: \ as published by the Free Software Foundation, either version 3
1.2       anton      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
1.9       anton      18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.2       anton      19: 
                     20: 
1.6       crook      21: \ If you want another terminal you can redefine the colours.
1.1       pazsan     22: 
                     23: \ But a better way is it only to redefine SET-ATTR
                     24: \ to have compatible colours.
                     25: 
                     26: \ Attributes description:
1.6       crook      27: \ <A ( -- -1 0 )           Start attributes description
                     28: \ A> ( -1 x .. x -- attr ) Terminate an attributes description and
                     29: \                          return overall attribute; currently only
                     30: \                          12 bits are used.
                     31: \
                     32: \ >BG ( colour -- x )      x is attribute with colour as Background colour
                     33: \ >FG ( colour -- x )      x is attribute with colour as Foreground colour
                     34: \
                     35: \ SET-ATTR ( attr -- )     Send attributes to terminal
                     36: \
                     37: \ BG> ( attr -- colour)    extract colour of Background from attr
                     38: \ FG> ( attr -- colour)    extract colour of Foreground from attr
                     39: \
                     40: \ See colorize.fs for an example of usage.
1.1       pazsan     41: 
1.6       crook      42: \ To do:        Make <A A> State smart and only compile literals!
1.1       pazsan     43: 
1.3       anton      44: needs vt100.fs
1.1       pazsan     45: 
                     46: decimal
                     47: 
                     48: 0 CONSTANT Black
                     49: 1 CONSTANT Red
                     50: 2 CONSTANT Green
                     51: 3 CONSTANT Yellow
                     52: 4 CONSTANT Blue
                     53: 5 CONSTANT Brown
                     54: 6 CONSTANT Cyan
                     55: 7 CONSTANT White
                     56: 
                     57: 1 CONSTANT Bold
                     58: 2 CONSTANT Underline
                     59: 4 CONSTANT Blink
                     60: 8 CONSTANT Invers
                     61: 
                     62: \ For portable programs don't use invers and underline
                     63: 
1.6       crook      64: : >BG    4 lshift ;
                     65: : >FG    >BG >BG ;
1.1       pazsan     66: 
1.6       crook      67: : BG>    4 rshift 15 and ;
                     68: : FG>    8 rshift 15 and ;
1.1       pazsan     69: 
                     70: : <A    -1 0 ;
                     71: : A>    BEGIN over -1 <> WHILE or REPEAT nip ;
                     72: 
                     73: VARIABLE Attr   -1 Attr !
                     74: 
                     75: DEFER Attr!
                     76: 
                     77: : (Attr!)       ( attr -- ) dup Attr @ = IF drop EXIT THEN
                     78:                 dup Attr !
                     79:                 ESC[    0 pn
1.6       crook      80:                         dup FG> ?dup IF 30 + ;pn THEN
                     81:                         dup BG> ?dup IF 40 + ;pn THEN
1.1       pazsan     82:                         dup Bold and IF 1 ;pn THEN
                     83:                         dup Underline and IF 4 ;pn THEN
                     84:                         dup Blink and IF 5 ;pn THEN
                     85:                         Invers and IF 7 ;pn THEN
                     86:                         [char] m emit ;
                     87: 
                     88: ' (Attr!) IS Attr!
                     89: 
1.6       crook      90: : BlackSpace    Attr @ dup BG> Black =
1.1       pazsan     91:                 IF drop space
                     92:                 ELSE 0 attr! space attr! THEN ;
                     93: 

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