gotools/internal/tool/tool.go

type Profile …

type Application …

type SubCommand …

type commandLineError …

func (e commandLineError) Error() string { … }

// CommandLineErrorf is like fmt.Errorf except that it returns a value that
// triggers printing of the command line help.
// In general you should use this when generating command line validation errors.
func CommandLineErrorf(message string, args ...interface{ … }

// Main should be invoked directly by main function.
// It will only return if there was no error.  If an error
// was encountered it is printed to standard error and the
// application exits with an exit code of 2.
func Main(ctx context.Context, app Application, args []string) { … }

// Run is the inner loop for Main; invoked by Main, recursively by
// Run, and by various tests.  It runs the application and returns an
// error.
func Run(ctx context.Context, s *flag.FlagSet, app Application, args []string) (resultErr error) { … }

// addFlags scans fields of structs recursively to find things with flag tags
// and add them to the flag set.
func addFlags(f *flag.FlagSet, field reflect.StructField, value reflect.Value) *Profile { … }

func addFlag(f *flag.FlagSet, value reflect.Value, flagName string, help string) { … }

func resolve(v reflect.Value) reflect.Value { … }