fix: check for settings file existence or exit

all/dev/backup/dbackup

@@ -17,6 +17,7 @@ root_command() {
   
   local settings=${args[--settings]}
   
+  if [[ $settings ]]; then
   if [[ -f $settings ]]; then
       echo loading settings file $settings
       module_load yaml
@@ -24,7 +25,9 @@ root_command() {
       echo $s_source
       echo $s_target
       echo $s_host
-      
+      else
+      echo settings file $settings does not exist && return 1
+  fi
   fi
   
   if [[ $s_server_host ]]; then
@@ -308,6 +311,30 @@ dbackup_usage() {
   fi
 }
 
+# :command.normalize_input
+normalize_input() {
+  local arg flags
+
+  while [[ $# -gt 0 ]]; do
+    arg="$1"
+    if [[ $arg =~ ^(--[a-zA-Z0-9_\-]+)=(.+)$ ]]; then
+      input+=("${BASH_REMATCH[1]}")
+      input+=("${BASH_REMATCH[2]}")
+    elif [[ $arg =~ ^(-[a-zA-Z0-9])=(.+)$ ]]; then
+      input+=("${BASH_REMATCH[1]}")
+      input+=("${BASH_REMATCH[2]}")
+    elif [[ $arg =~ ^-([a-zA-Z0-9][a-zA-Z0-9]+)$ ]]; then
+      flags="${BASH_REMATCH[1]}"
+      for (( i=0 ; i < ${#flags} ; i++ )); do
+        input+=("-${flags:i:1}")
+      done
+    else
+      input+=("$arg")
+    fi
+
+    shift
+  done
+}
 # :command.inspect_args
 inspect_args() {
   readarray -t sorted_keys < <(printf '%s\n' "${!args[@]}" | sort)
@@ -342,7 +369,7 @@ parse_requirements() {
   --help | -h )
     long_usage=yes
     dbackup_usage
-    exit 1
+    exit
     ;;
   
   esac
@@ -528,6 +555,7 @@ parse_requirements() {
   
     esac
   done
+  # :command.catch_all_filter
   # :command.default_assignments
   # :command.whitelist_filter
 }
@@ -536,7 +564,12 @@ parse_requirements() {
 initialize() {
   version="0.1.0"
   long_usage=''
-  set -e  
+  set -e
+
+  if [[ "${BASH_VERSINFO:-0}" -lt 4 ]]; then
+    printf "bash version 4 or higher is required\n"
+    exit 1
+  fi
 
   # :src/initialize.sh
   # Code here runs inside the initialize() function
@@ -552,7 +585,9 @@ initialize() {
 run() {
   declare -A args
   declare -a other_args
-  parse_requirements "$@"
+  declare -a input
+  normalize_input "$@"
+  parse_requirements "${input[@]}"
 
   if [[ $action == "root" ]]; then
     root_command

all/dev/backup/src/root_command.sh

@@ -10,6 +10,7 @@ module_load path
 
 local settings=${args[--settings]}
 
+if [[ $settings ]]; then
 if [[ -f $settings ]]; then
     echo loading settings file $settings
     module_load yaml
@@ -17,7 +18,9 @@ if [[ -f $settings ]]; then
     echo $s_source
     echo $s_target
     echo $s_host
-    
+    else
+    echo settings file $settings does not exist && return 1
+fi
 fi
 
 if [[ $s_server_host ]]; then