Add community scripts for i3blocks

.local/bin/i3scripts/contrib/util.sh

@@ -0,0 +1,41 @@
+################################
+# 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
+}