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# License at bottom
old_cmdno=${old_cmdno-0}
old_lines=${old_lines-0}
old_cols=${old_cols-0}
prepare_terminal()
{
stty rows $((LINES - 1))
printf "\n\033[1A"
old_lines=$LINES
old_cols=$COLUMNS
}
get_current_line()
{
local esc=$(printf "\033")
local response
printf "$esc[6n" > /dev/tty
read -s -d R response < /dev/tty
local IFS="[;"
set -- $response
printf "%s\n" "$2"
}
update_status_line()
{
local exit=$?
local getcmdno='\#'
local cmdno=${getcmdno@P}
local esc=$(printf "\033")
local pwd=$PWD
local dots=
[ $LINES -eq $old_lines -a $COLUMNS -eq $old_cols ] || prepare_terminal
local status_esc="$esc[7m$esc[m"
while true; do
local status="$esc[7m$(date +%m-%d/%H:%M)$esc[m $HOSTNAME $dots$pwd"
local status_len=$((${#status} - ${#status_esc}))
[ $status_len -le $COLUMNS ] && break
pwd=${pwd#/}
pwd=/${pwd#*/}
dots='...'
[ "${pwd#/*/}" == "$pwd" ] && break
done
status_len=$((${#status} - ${#status_esc}))
[ $status_len -gt $COLUMNS ] && status=
printf "${esc}7$esc[%s;1H$esc[K%s$esc[1;%sr${esc}8" $((LINES + 1)) "$status" $LINES
if [ $exit -ne 0 -a $cmdno -ne $old_cmdno ] ; then
printf "!%s!\n" $exit
fi
local curln=$(get_current_line)
if [ $curln -gt $LINES ]; then
printf "$esc[%s;1H" $LINES
fi
old_cmdno=$cmdno
}
PROMPT_COMMAND='update_status_line'
# Copyright 2023
# Kaz Kylheku <kaz@kylheku.com>
# Vancouver, Canada
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following condition is 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 need not reproduce any copyright notice.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
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