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freebsd/sys/boot/forth/version.4th
2013-08-27 06:09:28 +00:00

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Forth
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\ Copyright (c) 2006-2013 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-version.4th
variable versionX
variable versionY
\ Default $loader_version value if not overridden or using tribute screen
: str_loader_version ( -- C-ADDR/U|-1 ) -1 ;
\ Initialize text placement to defaults
80 versionX ! \ NOTE: this is the ending column (text is right-justified)
24 versionY !
: print_version ( -- )
\ Get the text placement position (if set)
s" loader_version_x" getenv dup -1 <> if
?number drop versionX ! -1
then drop
s" loader_version_y" getenv dup -1 <> if
?number drop versionY ! -1
then drop
\ Default version if none was set
s" loader_version" getenv dup -1 = if
drop
\ Default version if no logo is requested
s" loader_logo" getenv dup -1 = if
drop str_loader_version
else
2dup s" tribute" compare-insensitive 0= if
2drop
s" tribute-logo" sfind if
drop exit \ see beastie tribute-text
else
drop str_loader_version
then
else 2dup s" tributebw" compare-insensitive 0= if
2drop
s" tributebw-logo" sfind if
drop exit \ see beastie tribute-text
else
drop str_loader_version
then
else
2drop str_loader_version
then then
then
then dup -1 = if
drop exit \ default version (above) is disabled
then
\ Right justify the text
dup versionX @ swap - versionY @ at-xy
\ Print the version (optionally in cyan)
loader_color? if
." " type ." "
else
type
then
;