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-rw-r--r--sys/boot/forth/screen.4th86
1 files changed, 62 insertions, 24 deletions
diff --git a/sys/boot/forth/screen.4th b/sys/boot/forth/screen.4th
index 3ea79e4..e0af82b 100644
--- a/sys/boot/forth/screen.4th
+++ b/sys/boot/forth/screen.4th
@@ -1,36 +1,74 @@
-\ Screen manipulation related words.
+\ Copyright (c) 2003 Scott Long <scottl@FreeBSD.org>
+\ Copyright (c) 2015 Devin Teske <dteske@FreeBSD.org>
+\ All rights reserved.
+\
+\ 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 BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR 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.
+\
\ $FreeBSD$
marker task-screen.4th
-: escc ( -- ) \ emit Esc-[
- 91 27 emit emit
-;
+\ emit Esc-[
+: escc ( -- ) 27 emit [char] [ emit ;
-: ho ( -- ) \ Home cursor
- escc 72 emit \ Esc-[H
-;
+\ Home cursor ( Esc-[H )
+: ho ( -- ) escc [char] H emit ;
-: cld ( -- ) \ Clear from current position to end of display
- escc 74 emit \ Esc-[J
-;
+\ Clear from current position to end of display ( Esc-[J )
+: cld ( -- ) escc [char] J emit ;
-: clear ( -- ) \ clear screen
- ho cld
-;
+\ clear screen
+: clear ( -- ) ho cld ;
-: at-xy ( x y -- ) \ move cursor to x rows, y cols (1-based coords)
- escc .# 59 emit .# 72 emit \ Esc-[%d;%dH
-;
+\ move cursor to x rows, y cols (1-based coords) ( Esc-[%d;%dH )
+: at-xy ( x y -- ) escc .# [char] ; emit .# [char] H emit ;
-: fg ( x -- ) \ Set foreground color
- escc 3 .# .# 109 emit \ Esc-[3%dm
-;
+\ Set foreground color ( Esc-[3%dm )
+: fg ( x -- ) escc 3 .# .# [char] m emit ;
-: bg ( x -- ) \ Set background color
- escc 4 .# .# 109 emit \ Esc-[4%dm
-;
+\ Set background color ( Esc-[4%dm )
+: bg ( x -- ) escc 4 .# .# [char] m emit ;
+
+\ Mode end (clear attributes)
+: me ( -- ) escc [char] m emit ;
+
+\ Enable bold mode ( Esc-[1m )
+: b ( -- ) escc 1 .# [char] m emit ;
+
+\ Disable bold mode ( Esc-[22m )
+: -b ( -- ) escc 22 .# [char] m emit ;
+
+\ Enable inverse foreground/background mode ( Esc-[7m )
+: inv ( -- ) escc 7 .# [char] m emit ;
+
+\ Disable inverse foreground/background mode ( Esc-[27m )
+: -inv ( -- ) escc 27 .# [char] m emit ;
-: me ( -- ) \ Mode end (clear attributes)
- escc 109 emit
+\ Convert all occurrences of given character (c) in string (c-addr/u) to Esc
+: escc! ( c-addr/u c -- c-addr/u )
+ 2 pick 2 pick
+ begin dup 0> while
+ over c@ 3 pick = if over 27 swap c! then
+ 1- swap 1+ swap
+ repeat
+ 2drop drop
;
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