Add information messages and silent mode

cluster/maco.check.update.sh

@@ -12,10 +12,15 @@ readonly PROGNAME=$(basename "${0}")
 readonly PROGDIR=$(readlink -m $(dirname "${0}"))
 readonly ARGS="${*}"
 readonly NBARGS="${#}"
+
 [ -z "${DEBUG}" ] && DEBUG=1
 ## Export DEBUG for sub-script
 export DEBUG
 
+[ -z "${OUTPUT_MESSAGE}" ] && OUTPUT_MESSAGE=0
+## Export OUTPUT_MESSAGE for sub-script
+export OUTPUT_MESSAGE
+
 ## Colors
 readonly PURPLE='\033[1;35m'
 readonly RED='\033[0;31m'
@@ -45,10 +50,21 @@ EXAMPLES :
 # }}}
 debug_message() {                                               # {{{
 
-	local_message="${1}"
+	local_debug_message="${1}"
 
 	## Print message if DEBUG is enable (=0)
-	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_message}"
+	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_debug_message}"
+
+}
+# }}}
+message() {                                               # {{{
+
+	local_message="${1}"
+
+	## Print message if OUTPUT_MESSAGE is enable (=0)
+	[ "${OUTPUT_MESSAGE}" -eq "0" ] && printf '%b' "${local_message}"
+
+	return 0
 
 }
 # }}}
@@ -59,6 +75,7 @@ is_maco_urgent_upgrade_require() {
 	if [ "${URGENT_TIMESTAMP}" -gt "${CURRENT_TIMESTAMP}" ]; then
 		debug_message "is_maco_urgent_upgrade_require − \
 Urgent Maco upgrade is available (from version ${CURRENT_MACO_VERSION} to ${URGENT_MACO_VERSION})."
+		message "Urgent Maco upgrade is available (from version ${CURRENT_MACO_VERSION} to ${URGENT_MACO_VERSION})."
 		return_urgent_upgrade="0"
 	else
 		debug_message "is_maco_urgent_upgrade_require − \
@@ -77,6 +94,7 @@ is_maco_upgrade_require() {                                                # {{{
 	if [ "${LATEST_TIMESTAMP}" -gt "${CURRENT_TIMESTAMP}" ]; then
 		debug_message "is_maco_upgrade_require − \
 Latest Maco upgrade is available (from version ${CURRENT_MACO_VERSION} to ${LATEST_MACO_VERSION})."
+		message "Latest Maco upgrade is available (from version ${CURRENT_MACO_VERSION} to ${LATEST_MACO_VERSION})."
 		return_upgrade="0"
 	else
 		debug_message "is_maco_upgrade_require − \
@@ -95,6 +113,7 @@ is_maco_uptodate() {                                                # {{{
 	if [ "${CURRENT_TIMESTAMP}" = "${LATEST_TIMESTAMP}" ]; then
 		debug_message "is_maco_uptodate − \
 Local Maco (${CURRENT_MACO_VERSION}) is up to date (latest : ${LATEST_MACO_VERSION})."
+		message "Local Maco (${CURRENT_MACO_VERSION}) is up to date (latest : ${LATEST_MACO_VERSION})."
 		return_uptodate="0"
 	else
 		debug_message "is_maco_uptodate − \
@@ -152,6 +171,14 @@ if [ ! "${NBARGS}" -eq "0" ]; then
 			## Re-export new DEBUG value
 			export DEBUG
 			;;
+		-q|--quiet ) ## Silent mode
+			## Avoid to display any message on standard output
+			OUTPUT_MESSAGE=1
+			;;
+		-s|--silent ) ## Silent mode
+			## Avoid to display any message on standard output
+			OUTPUT_MESSAGE=1
+			;;
 		-- )         ## End of options list
 			## End the while loop
 			break