Modernize invertergui: MQTT write support, HA integration, UI updates

vendor/github.com/jessevdk/go-flags/parser.go

@@ -113,6 +113,10 @@ const (
 	// POSIX processing.
 	PassAfterNonOption
 
+	// AllowBoolValues allows a user to assign true/false to a boolean value
+	// rather than raising an error stating it cannot have an argument.
+	AllowBoolValues
+
 	// Default is a convenient default set of options which should cover
 	// most of the uses of the flags package.
 	Default = HelpFlag | PrintErrors | PassDoubleDash
@@ -252,7 +256,7 @@ func (p *Parser) ParseArgs(args []string) ([]string, error) {
 		}
 
 		if !argumentIsOption(arg) {
-			if (p.Options&PassAfterNonOption) != None && s.lookup.commands[arg] == nil {
+			if ((p.Options&PassAfterNonOption) != None || s.command.PassAfterNonOption) && s.lookup.commands[arg] == nil {
 				// If PassAfterNonOption is set then all remaining arguments
 				// are considered positional
 				if err = s.addArgs(s.arg); err != nil {
@@ -521,11 +525,10 @@ func (p *parseState) estimateCommand() error {
 
 func (p *Parser) parseOption(s *parseState, name string, option *Option, canarg bool, argument *string) (err error) {
 	if !option.canArgument() {
-		if argument != nil {
+		if argument != nil && (p.Options&AllowBoolValues) == None {
 			return newErrorf(ErrNoArgumentForBool, "bool flag `%s' cannot have an argument", option)
 		}
-
-		err = option.set(nil)
+		err = option.Set(argument)
 	} else if argument != nil || (canarg && !s.eof()) {
 		var arg string
 
@@ -546,13 +549,13 @@ func (p *Parser) parseOption(s *parseState, name string, option *Option, canarg
 		}
 
 		if err == nil {
-			err = option.set(&arg)
+			err = option.Set(&arg)
 		}
 	} else if option.OptionalArgument {
 		option.empty()
 
 		for _, v := range option.OptionalValue {
-			err = option.set(&v)
+			err = option.Set(&v)
 
 			if err != nil {
 				break