auto-flags: usages & functions

Author: lainio

assert/assert.go

@@ -550,6 +550,18 @@ var mapDefInd = map[string]defInd{
 	"Debug": Debug,
 }
 
+var MapDefIndToString = map[defInd]string{
+	Production:  "Production",
+	Development: "Development",
+	Test:        "Test",
+	TestFull:    "TestFull",
+	Debug:       "Debug",
+}
+
+func AsserterString() string {
+	return MapDefIndToString[def]
+}
+
 func NewDefInd(v string) defInd {
 	ind, found := mapDefInd[v]
 	if !found {

err2_init.go

@@ -19,26 +19,24 @@ var (
 )
 
 func init() {
-	flag.Var(&tracer.Log, "err2-log", "stream for logging")
-	flag.Var(&tracer.Error, "err2-trace", "stream for error tracing")
+	flag.Var(&tracer.Log, "err2-log", "stream for logging: nil -> log pkg")
+	flag.Var(&tracer.Error, "err2-trace", "stream for error tracing: stderr, stdout")
 	flag.Var(&tracer.Panic, "err2-panic-trace", "stream for panic tracing")
 	flag.Var(&asserterFlag, "err2-asserter", "asserter: Production, Development, Debug")
 }
 
-type flagAsserter struct {
-	v string
-}
+type flagAsserter struct{}
 
 // String is part of the flag interfaces
-func (f *flagAsserter) String() string {
-	return f.v
+func (*flagAsserter) String() string {
+	return assert.AsserterString()
 }
 
 // Get is part of the flag interfaces, getter.
 func (*flagAsserter) Get() any { return nil }
 
 // Set is part of the flag.Value interface.
-func (f *flagAsserter) Set(flagAsserter string) error {
-	assert.SetDefault(assert.NewDefInd(flagAsserter))
+func (*flagAsserter) Set(value string) error {
+	assert.SetDefault(assert.NewDefInd(value))
 	return nil
 }

internal/tracer/tracer.go

@@ -42,7 +42,7 @@ func (v *value) SetTracer(w io.Writer) {
 
 // String is part of the flag interfaces
 func (v *value) String() string {
-	return x.Whom(v.Tracer() != nil, "true", "false")
+	return x.Whom(v.Tracer() != nil, "stderr", "nil")
 }
 
 // Get is part of the flag interfaces, getter.
@@ -55,6 +55,8 @@ func (v *value) Set(value string) error {
 		v.SetTracer(os.Stderr)
 	case "stdout":
 		v.SetTracer(os.Stdout)
+	default:
+		v.SetTracer(nil)
 	}
 	return nil
 }