[add] conf-schema exposition

source/conf.ts

@@ -652,8 +652,8 @@ namespace _munin.conf
 	
 	/**
 	 */
-	function schema(
-		version : string
+	export function schema(
+		version : string = "3"
 	) : lib_plankton.conf.type_schema
 	{
 		switch (version) {
@@ -679,7 +679,6 @@ namespace _munin.conf
 				};
 				break;
 			}
-			default:
 			case "2":
 			case "3": {
 				return {

source/main.ts

@@ -176,6 +176,15 @@ namespace _munin
 					"info": "path to configuration file",
 					"name": "conf-path",
 				}),
+				"conf_schema": lib_plankton.args.class_argument.volatile({
+					"indicators_long": ["conf-schema"],
+					"indicators_short": ["s"],
+					"type": lib_plankton.args.enum_type.string,
+					"mode": lib_plankton.args.enum_mode.replace,
+					"default": "",
+					"info": "only print the configuration schema in a specific version (latest version via argument '_')",
+					"name": "conf-schema",
+				}),
 				"conf_expose": lib_plankton.args.class_argument.volatile({
 					"indicators_long": ["conf-expose"],
 					"indicators_short": ["e"],
@@ -187,11 +196,11 @@ namespace _munin
 				}),
 				"single_run": lib_plankton.args.class_argument.volatile({
 					"indicators_long": ["single-run"],
-					"indicators_short": ["s"],
+					"indicators_short": ["x"],
 					"type": lib_plankton.args.enum_type.boolean,
 					"mode": lib_plankton.args.enum_mode.replace,
 					"default": false,
-					"info": "whether to only execute on iteration at run",
+					"info": "whether to only execute one iteration at run",
 					"name": "single-run",
 				}),
 				"verbosity": lib_plankton.args.class_argument.volatile({
@@ -239,6 +248,19 @@ namespace _munin
 				)
 			);
 		}
+		else {
+			if (args.conf_schema !== "") {
+				process.stdout.write(
+					lib_plankton.json.encode(
+						_munin.conf.schema((args.conf_schema === "_") ? undefined : args.conf_schema),
+						{
+							"formatted": true,
+						}
+					)
+					+
+					"\n"
+				);
+			}
 			else {
 				// init
 				const conf : _munin.conf.type_conf = await _munin.conf.load(args.conf_path);
@@ -305,6 +327,7 @@ namespace _munin
 					}
 				}
 			}
+		}
 
 		return Promise.resolve<void>(undefined);
 	}