Configuration is serious business

Signed-off-by: fbt <fbt@fleshless.org>

sx-open

@@ -13,13 +13,83 @@ usage() {
 }
 
 act() {
-	(( verbose )) && printf 'CMD: %s\n' "$*" >&2
-	(( dry_run )) || { "$@"; return $?; }
+	cfg verbose && printf 'CMD: %s\n' "$*" >&2
+	cfg dryrun || { "$@"; return $?; }
 
 	return 0
 }
 
+# cfg foo bool = [true|1]
+# cfg foo [string] = 'bar'
+# cfg foo
+cfg() {
+	declare s_name=$1; shift
+	declare -n \
+		_s="cfg[$s_name]" \
+		_s_type="cfg[${s_name}_type]"
+
+	if (( $# )); then
+		while (( $# )); do
+			case $1 in
+				(bool|str) _s_type="$1";;
+
+				(true|false|0|1)
+					_s_type='bool'
+					_s="$1"
+
+					break
+				;;
+
+				(=)
+					[[ $_s_type ]] || _s_type='string'
+
+					[[ $_s_type == 'bool' ]] && {
+						case $2 in
+							(true|false|0|1) true;;
+							(*)
+								error "On line $LINENO, in $FUNCNAME: Invalid value for '$s_name' type 'bool': '$2'"
+								return 11
+							;;
+						esac
+					}
+
+					_s="$2"
+
+					break
+				;;
+
+				(*)
+					error "On line $LINENO, in $FUNCNAME: Syntax error: “cfg $s_name $*”"
+					exit 115
+				;;
+			esac
+			shift
+		done
+	else
+		[[ -n $_s ]] || {
+			error "On line $LINENO, in $FUNCNAME: invalid option: '$s_name'"
+			return 13
+		}
+
+		case $_s_type in
+			(bool)
+				case $_s in
+					(true|1) return 0;;
+					(false|0) return 1;;
+				esac
+			;;
+
+			(*)
+				printf '%s\n' "$_s"
+				return 0
+			;;
+		esac
+	fi
+}
+
 notify() {
+	cfg notify || return 7 # disabled
+
 	[[ $DISPLAY ]] || return 3
 	[[ $notifier ]] || return 5
 
@@ -111,17 +181,26 @@ is_uri() [[ $1 =~ ^[a-zA-Z][a-zA-Z0-9\+\.\-]+:.+ ]]
 main() {
 	declare cmd_result target
 
+	declare -gA cfg
+	cfg verbose bool = false
+	cfg dryrun bool = false
+	cfg notify bool = true
+
 	# Source the config file.
 	cfg_file="$HOME/.config/sx-open.cfg"
 	[[ -f "$cfg_file" ]] && { source "$cfg_file"; }
 
 	while (( $# )); do
 		case $1 in
-			(-d) dry_run=1; verbose=1;;
-			(-v) verbose=1;;
-			(-h) usage; return 0;;
+			(-d)
+				cfg dryrun = true
+				cfg verbose = true
+			;;
 
-			(-n) notify() { true; };; # disable desktop notifications
+			(-v) cfg verbose = true;;
+			(-n) cfg notify = false;; # disable desktop notifications
+
+			(-h) usage; return 0;;
 
 			(--) shift; break;;
 			(*) break;;
@@ -132,7 +211,10 @@ main() {
 
 	target=$1; [[ "$target" ]] || { usage; exit; }
 
-	(( dry_run )) && printf 'Dry run: not actually running the handler\n' >&2
+	cfg dryrun && {
+		printf 'Dry run: not actually running the handler\n' >&2
+		cfg verbose true
+	}
 
 	# Treat file:// as local paths.
 	[[ "$target" =~ ^file:(//)?(/.+) ]] && target=${BASH_REMATCH[2]}

sx-open.cfg

@@ -2,6 +2,15 @@
 # Configuration file for sx-open
 # Note that as sx-open checks the regexes in order, they should be placed in order from specific to less so.
 
+# Disable desktop notifications
+#cfg notify false
+
+# Enable verbose mode
+#cfg verbose true
+
+# Enable dry run mode (implies verbose)
+#cfg dryrun true
+
 # <cmd> macros:
 # %target% — The first argument to this script.
 #            If not found, target is appended to the end of <cmd>