piwigo - fix unbound variable error and adapt to sequencer 16

seqs/piwigo.sh

@@ -4,22 +4,9 @@
 ## Installation and management of piwigo gallery
 
 toolName="piwigo"
-toolVersion="11.3.0"
-
-# Get script working directory
-# (when called from a different directory)
-WDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >>/dev/null 2>&1 && pwd )"
-CONFIG=0
-SCRIPT_NAME=$(basename -- "$0")
-SCRIPT_NAME=${SCRIPT_NAME%%.*}
-CONFIG_FILE_NAME="${SCRIPT_NAME}.cfg"
-CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"
 
 seq_config() {
-  initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
-  if [ $? -eq 0 ] ; then
-    CONFIG=1
-  else
+  if ! initSeqConfig "${seq_configName}" "${seq_configTemplate}" ; then
     dry || return 1
   fi
 }
@@ -31,22 +18,24 @@ step_30() {
 }
 
 step_31_info() { 
-  echoinfoArgs "[daily|monthly(default]"
+  echoinfoArgs "[daily|monthly(default)]"
   echo "Backup ${toolName} database"
 }
 step_31_alias() { echo "backupdb"; }
 step_31() {
-  case "$2" in
+  case "${2:-}" in
     daily|Daily|DAILY)
-      silent || echo " [I] Daily backup..."
-      exep "mysqldump --single-transaction -u root ${PIWI_DB_NAME} | bzip2 -c > \"${PIWI_BU_DIR}/${toolName}_daily.sql.bz2\""
+      info "Daily backup..."
+      exep mysqldump --single-transaction -u root "${PIWI_DB_NAME}" '|' bzip2 -c '>' "${PIWI_BU_DIR}/${toolName}_daily.sql.bz2"
       ;;
     *)
-      silent || echo " [I] Monthly backup..."
-      exep "mysqldump --single-transaction -u root ${PIWI_DB_NAME} | bzip2 -c > \"${PIWI_BU_DIR}/monthly/\`date +%Y%m%d\`_${toolName}.sql.bz2\""
+      info "Monthly backup..."
+      exep mysqldump --single-transaction -u root "${PIWI_DB_NAME}" '|' bzip2 -c '>' "${PIWI_BU_DIR}/monthly/$(date +%Y%m%d)_${toolName}.sql.bz2"
       ;;
   esac
 }
 
+# shellcheck disable=SC2034 # Appears unused
 readonly sqr_minVersion=16
+# shellcheck disable=SC1091 # Don't follow this source
 . /usr/local/bin/sequencer.sh