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## vim:ft=zsh
## progress - draw a simple progress bar
## Usage: progress <current> <max> [left description] [right discription]
typeset -i current=$1
typeset -i max=$2
typeset desc=$3
typeset desc2=$4
typeset output=''
typeset currentper=$(( (current*100)/max ))
typeset c a
function item {
typeset j
for j in {0..$1}; {
(( j > 0 )) && output+=$2
}
}
c=$(( currentper/5 ))
a=$(( 20-c ))
output+="$desc ["
item $c '='
item $a ' '
output+="] $currentper% $desc2"
echo -ne "\r\e[2K"
echo -ne $output
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