pass the flags to the go-arg parser

3 files changed, 31 insertions, 3 deletions

diff --git a/interface.go b/interface.go
index 72c1b50..13b2e71 100644
--- a/interface.go
+++ b/interface.go
@@ -17,6 +17,12 @@ type mustParseI interface {
 	MustParse() error
 }
 
+type parseFlagsI interface {
+	// Version returns the version string that will be printed on a line by itself
+	// at the top of the help message.
+	ParseFlags([]string) error
+}
+
 type initGuiI interface {
 	// Version returns the version string that will be printed on a line by itself
 	// at the top of the help message.
@@ -81,6 +87,12 @@ func findAppInfo(tmp interface{}) {
 		panic("you must define in your app the function: func (args) MustParse() error")
 	}
 
+	if tmp, ok := tmp.(parseFlagsI); ok {
+		me.parseFlagsFunc = tmp.ParseFlags
+	} else {
+		parseFlagsHelp()
+	}
+
 	if tmp, ok := tmp.(initGuiI); ok {
 		me.initGuiFunc = tmp.InitGui
 		if err := tmp.InitGui(); err != nil {
@@ -126,3 +138,14 @@ func findAppInfo(tmp interface{}) {
 		// panic("you need to make the function argv.Exit()")
 	}
 }
+
+func parseFlagsHelp() {
+	log.Info("")
+	log.Info("// this function will send the current argv PB to go-args for parsing")
+	log.Info("func (args) ParseFlags(flags []string) error {")
+	log.Info("	arg.ParseFlags(flags)")
+	log.Info("}")
+	log.Info("")
+
+	panic("you must define in your app the function: func (args) ParseFlags([]string) error")
+}
diff --git a/structs.go b/structs.go
index ab7faa5..4ec64cb 100644
--- a/structs.go
+++ b/structs.go
@@ -10,8 +10,8 @@ type AutoArgs struct {
 	Argv                     func([]string)                  // the function for shell autocomplete
 	initArgv                 func() (string, string, string) // this is required. gets APPNAME, BUILDTIME & VERSION
 	initGuiFunc              func() error                    // this is required for 'gui' args to work
-	mustParseFunc            func() error                    // notsure yet
-	parseFlags               func([]string) error            // notsure yet
+	mustParseFunc            func() error                    // calls go-arg.MustParse()
+	parseFlagsFunc           func([]string) error            // notsure yet
 	writeHelp                func()                          // notsure yet
 	writeHelpForSubcommand   func(string)                    // notsure yet
 	writeHelpForAutocomplete func()                          // notsure yet
diff --git a/theMagicOfAutocomplete.go b/theMagicOfAutocomplete.go
index 8030feb..550b63d 100644
--- a/theMagicOfAutocomplete.go
+++ b/theMagicOfAutocomplete.go
@@ -130,10 +130,15 @@ func Autocomplete(dest any) *Argv {
 
 	// use go-args to parse the structs so we can use them here
 	// me.pp, err = arg.ParseFlags(flags, dest)
-	if err := me.parseFlags(flags); err != nil {
+	if me.parseFlagsFunc == nil {
+		panic("argv.parseFlags() is nil")
+	}
+
+	if err := me.parseFlagsFunc(flags); err != nil {
 		log.Info("application parseFlags() err", err)
 		panic("argv.parseFlags() err")
 	}
+
 	if len(flags) == 0 {
 		// error is normal if there are no command line args
 	} else {