################################
# Calculates a given expression
#
# Dependencies:
# - bc
#
# @param {String} 1: The expression to calculate
# @return {Number}: The result of the expression
################################
calc() {
	echo "$1" | bc
}

################################
# Counts lines in text, accounting for empty values
#
# @param {String} 1: The input text
# @return {Number}: The number of lines
################################
numLines() {
	if [[ "$1" == "" ]]; then
		echo 0
	else
		echo "$1" | wc -l
	fi
}

cacheDir=".cache"
cacheFile="$cacheDir/i3-blocks-contrib-${BLOCK_NAME}"

if [[ -z $cacheDir ]]; then
	mkdir $cacheDir
fi

getCache() {
	cat $cacheFile || echo $1
}

setCache() {
	echo "$1" > $cacheFile
}