47 lines
1.1 KiB
Text
47 lines
1.1 KiB
Text
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#!/usr/bin/env bash
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# <config>
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NUMBER=4
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SYMBOL_CURRENT=" "
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SYMBOL_OTHER=" "
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PIPE=/tmp/workspace
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WRAP=true
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# </config>
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# format_line takes the current workspace number [1..N] and prints a string
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# representing the list of workspaces (e.g. 4 -> "0 0 0 1 0")
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format_line() {
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before=`yes $SYMBOL_OTHER 2>/dev/null | head -n $(($1 - 1))`
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after=`yes $SYMBOL_OTHER 2>/dev/null | head -n $(($NUMBER - $1))`
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echo $before $SYMBOL_CURRENT $after
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}
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# remove an existing pipe and make a new one
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rm -f $PIPE
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mkfifo $PIPE
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# print initial state
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current=1
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format_line $current
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while true
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do
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if read input <$PIPE; then
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if [ $input == "right" ]; then input=$((current + 1)); fi
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if [ $input == "left" ]; then input=$((current - 1)); fi
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if (( $input < 1 )); then
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if [ "$WRAP" == false ]; then continue; fi
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input=$NUMBER
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fi
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if (( $input > $NUMBER )); then
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if [ "$WRAP" == false ]; then continue; fi
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input=1
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fi
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if (( $input == $current )); then continue; fi
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format_line $input
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current=$input
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fi
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done
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