factor/library/ansi.factor

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2.6 KiB
Factor

! :folding=indent:collapseFolds=1:
! $Id$
!
! Copyright (C) 2004 Slava Pestov.
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions are met:
!
! 1. Redistributions of source code must retain the above copyright notice,
! this list of conditions and the following disclaimer.
!
! 2. Redistributions in binary form must reproduce the above copyright notice,
! this list of conditions and the following disclaimer in the documentation
! and/or other materials provided with the distribution.
!
! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
IN: ansi
USE: combinators
USE: lists
USE: kernel
USE: format
USE: namespaces
USE: stack
USE: stdio
USE: streams
USE: strings
! Some words for outputting ANSI colors.
: black 0 ; inline
: red 1 ; inline
: green 2 ; inline
: yellow 3 ; inline
: blue 4 ; inline
: magenta 5 ; inline
: cyan 6 ; inline
: white 7 ; inline
: clear ( -- code )
#! Clear screen
"\e[2J\e[H" ; inline
: reset ( -- code )
#! Reset ANSI color codes.
"\e[0m" ; inline
: bold ( -- code )
#! Switch on boldface.
"\e[1m" ; inline
: fg ( color -- code )
#! Set foreground color.
"\e[3" swap "m" cat3 ; inline
: bg ( color -- code )
#! Set foreground color.
"\e[4" swap "m" cat3 ; inline
: ansi-attrs ( style -- )
"bold" over assoc [ bold % ] when
"ansi-fg" over assoc [ fg % ] when*
"ansi-bg" over assoc [ bg % ] when*
drop ;
: ansi-attr-string ( string style -- string )
<% ansi-attrs % reset % %> ;
: <ansi-stream> ( stream -- stream )
#! Wraps the given stream in an ANSI stream. ANSI streams
#! support the following character attributes:
#! bold - if not f, text is boldface.
#! ansi-fg - foreground color
#! ansi-bg - background color
<extend-stream> [
( string style -- )
[ ansi-attr-string write ] "fwrite-attr" set
] extend ;