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#!/bin/bash
# Copyright Matthew Bruenig <matthewbruenig@gmail.com> (packer)
# Moritz Lüdecke <ritze@skweez.net>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
DASH="-"
HASH="#"
BEGINBAR="["
ENDBAR="]"
INFBAR_UPDATE="0.1"
usage() {
echo 'usage: pbar [OPTION] [-t DEVICE] DONE TOTAL [TITLE] [DETAILS]...'
echo
echo ' -i infinite progressbar,'
echo ' -n outputs a new line at the end'
echo ' -t set the tty device'
echo ' -h display this help and exit'
echo
echo 'Examples:'
echo ' pbar -n 3 5 "testing..." 3 of 5 Print the follow line:'
echo 'testing... 3 of 5 [##########--------] 60%'
echo ' pbar -i 0 0 "testing..." Print a infinite working progressbar:'
echo 'testing... [------###---------]'
exit
}
screenwidth() {
tty=$1
width="$(stty -F $tty size)"
echo "${width##* }"
}
removeformat() {
echo "$(expr "$1" | sed -r "s/\\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g")"
}
info() {
width=$1
title=$2
misc=$3
# Get vars for output
beginline=$title
misclen=0
# Remove color code
if [[ $misc != "" ]]; then
misctext=$(removeformat "$misc")
misclen=$((1+${#misctext}))
fi
beginlinetext=$(removeformat "$beginline")
if [[ $width -lt $((${#beginlinetext}+2+$misclen-1)) ]]; then
# Remove color code, cut the text and print it without color code
beginlinetext=${beginlinetext::$((width-$misclen-4))}
beginline=$beginlinetext"..."
beginlinetext=$(removeformat "$beginline")
fi
spaces="$(($width-${#beginlinetext}-1-$misclen))"
# Print output
printf "$beginline %${spaces}s"
[[ $misc != "" ]] && printf " $misc"
}
drawsymbol() {
symbol=$1
num=$2
for ((n=0; n<$num; n++)); do
printf "$symbol"
done
}
# This method is a fork from the packer method aurbar
progbar() {
width=$1
infinite=$2
done=$3
total=$4
# Get vars for output
barchars="$(($width-${#BEGINBAR}-${#ENDBAR}-6))"
hashes="$(($barchars*$done/$total))"
dashes="$(($barchars-$hashes))"
# Print output
printf " ${BEGINBAR}"
if [[ $infinite ]]; then
offset="$(($hashes-2))"
hashes=3
[[ $offset -lt 0 ]] && offset=0 && hashes=2
drawsymbol $DASH $offset
offset="$(($offset+$hashes))"
[[ $offset -gt $barchars ]] && hashes=2
drawsymbol $HASH $hashes
dashes="$(($barchars-$offset))"
drawsymbol $DASH $dashes
printf "%s \r" ${ENDBAR}
else
drawsymbol $HASH $hashes
drawsymbol $DASH $dashes
perc="$(($done*100/$total))"
printf "%s%4s%%\r" ${ENDBAR} ${perc}
fi
}
printline() {
tty=$1
infinite=$2
done=$3
total=$4
title=$5
misc=$6
width=$(screenwidth $tty)
infolen="$(($width*6/10))"
[ $width -lt 50 ] && width=50
progbarlen="$(($width-$infolen))"
if [[ $total -eq 0 ]]; then
total=$(($progbarlen-9))
newdone="$(($done % $total))"
if [[ $(($done % $((2*$total)))) -ge $total ]]; then
newdone="$(($total-$newdone))"
fi
done=$(($newdone+1))
total=$(($total+1))
fi
# Delete line
printf "\033[0G"
info $infolen "$title" "$misc"
progbar $progbarlen "$infinite" $done $total
}
# Argument parsing
[[ $1 ]] || usage
while getopts ":hint:" optname; do
case "$optname" in
"i")
infinite=1
;;
"n")
newline=1
;;
"t")
tty=$OPTARG
;;
"h")
usage
;;
"?")
echo "Unknown option $OPTARG"
usage
;;
":")
echo "No argument value for option $OPTARG"
;;
*)
echo "Unknown error while processing options"
;;
esac
done
done=${@:$OPTIND:1}
total=${@:$OPTIND+1:1}
title="${@:$OPTIND+2:1}"
misc="${@:$OPTIND+3}"
int='^[0-9]+$'
if [[ $tty == "" ]]; then
tty=$(tty)
if [[ $? -ne 0 ]]; then
echo "Can't get tty device!"
usage
fi
fi
if [[ $total -eq "" ]] ||
! [[ $done =~ $int ]] || ! [[ $total =~ $int ]]; then
if [[ $done -ne 0 ]] || [[ $total -ne 0 ]] || [[ $infinite -ne 1 ]]; then
usage
fi
fi
if [[ $done -gt $total ]]; then
done=$total
fi
if [[ $done -eq 0 ]] && [[ $total -eq 0 ]] && [[ $infinite -eq 1 ]]; then
trap "exit=true" SIGINT SIGTERM
i=0
while [ ! $exit ]; do
printline $tty "$infinite" $i 0 "$title" "$misc"
i="$(($i+1))"
sleep $INFBAR_UPDATE
done
# Delete line
printf "\033[0G"
[ $newline ] && printline $tty "" 1 1 "$title" "$misc"
else
printline $tty "$infinite" $done $total "$title" "$misc"
fi
[ $newline ] && echo
exit
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