more work on registration of flags

Signed-off-by: Jeff Carr <jcarr@wit.com>

flags.go

@@ -11,24 +11,25 @@ var ERROR bool = true
 var VERBOSE bool = false
 // var SPEW bool = false
 
-var SPEW logFlag
+var SPEW LogFlag
 
-type logFlag struct {
-	b	bool
-	name	string
-	pkg	string
-	desc	string
+type LogFlag struct {
+	B	bool
+	Name	string
+	Subsystem	string
+	Desc	string
 }
 
 var registered map[string][]string
+var flags []*LogFlag
 
 func init() {
 	registered = make(map[string][]string)
 
-	SPEW.b = false
-	SPEW.name = "SPEW"
-	SPEW.pkg = "log"
-	SPEW.desc = "Enable log.Spew()"
+	SPEW.B = false
+	SPEW.Name = "SPEW"
+	SPEW.Subsystem = "log"
+	SPEW.Desc = "Enable log.Spew()"
 
 	// register the default flags used by this log package
 	registered["log"] = []string{"SPEW","INFO", "WARN", "ERROR", "VERBOSE"}
@@ -43,6 +44,11 @@ func All(b bool) {
 }
 
 func ListFlags() map[string][]string {
+	Info("ListFlags() registered =", registered)
+	for _, f := range flags {
+		Info("ListFlags() flag B =", f.B, "Name =", f.Name, "Subsystem =", f.Subsystem, "Description:", f.Desc)
+	}
+
 	return registered
 }
 
@@ -53,7 +59,7 @@ func Set(flag string, b bool) {
 	case "WARN":
 		WARN = b
 	case "SPEW":
-		SPEW.b = b
+		SPEW.B = b
 	case "ERROR":
 		ERROR = b
 	case "VERBOSE":
@@ -70,7 +76,7 @@ func Get(flag string) bool {
 	case "WARN":
 		return WARN
 	case "SPEW":
-		return SPEW.b
+		return SPEW.B
 	case "ERROR":
 		return ERROR
 	case "VERBOSE":
@@ -81,6 +87,12 @@ func Get(flag string) bool {
 	return false
 }
 
+// register a variable name from a subsystem
+func (f *LogFlag) Register() {
+	Info("log.Register() ", f)
+	flags = append(flags,f)
+}
+
 // register a variable name from a subsystem
 // this is used for custom log flags
 func Register(subsystem string, name string, b *bool) {

log.go

@@ -20,12 +20,41 @@ In your package, register NETWARN:
 	log.Register("myNetPkg", "NETWARN", &NETWARN)
 */
 
-func Log(b bool, a ...any) {
-	if ! b { return }
+func Log(x any, a ...any) {
+	if x == nil { return }
+	switch x.(type) {
+	case bool:
+		if ! x.(bool) {
+			return
+		}
 		origlog.Println(a...)
+	case LogFlag:
+		var f LogFlag
+		f = x.(LogFlag)
+		if ! f.B {
+			return
+		}
+		a = append([]any{f.Subsystem}, a...)
+		origlog.Println(a...)
+	default:
+		a = append([]any{x}, a...)
+		origlog.Println(a...)
+	}
 }
 
-func Logf(b bool, s string, a ...any) {
-	if ! b { return }
+func Logf(x any, s string, a ...any) {
+	if x == nil { return }
+	switch x.(type) {
+	case bool:
+		if ! x.(bool) {
+			return
+		}
+	case LogFlag:
+		var f LogFlag
+		f = x.(LogFlag)
+		if ! f.B {
+			return
+		}
+	}
 	origlog.Printf(s, a...)
 }

spew.go

@@ -6,7 +6,7 @@ import 	(
 )
 
 func Spew(b any, a ...any) {
-	if ! SPEW.b { return }
+	if ! SPEW.B { return }
 
 	switch b.(type) {
 	case bool:
@@ -14,10 +14,10 @@ func Spew(b any, a ...any) {
 			return
 		}
 		origlog.Println("SPEW:", spew.Sdump(a...))
-	case logFlag:
-		var f logFlag
-		f = b.(logFlag)
-		if ! f.b {
+	case LogFlag:
+		var f LogFlag
+		f = b.(LogFlag)
+		if ! f.B {
 			return
 		}
 		origlog.Println("SPEW:", spew.Sdump(a...))