implement hasElement()

libraries/common

@@ -32,6 +32,20 @@ function die() {
 	exit ${2}
 }
 
+#-------------------------------------------------------------------------------
+# Checks whether a defined variable contain specified element or not
+# Parameters: %variable% %element%
+#-------------------------------------------------------------------------------
+function hasElement() {
+	local NEEDLE=${1}
+	shift
+	local X
+	for X in "${@}"; do
+		[ "${X}" = "${NEEDLE}" ] && return 0
+	done
+	return 1
+}
+
 #-------------------------------------------------------------------------------
 # Checks whether a supplied variable is defined or not
 # Parameters: %variable%