package toggledlog import ( "encoding/json" "fmt" "log" "os" ) const ( ProgramName = "gocryptfs" ) func JSONDump(obj interface{}) string { b, err := json.MarshalIndent(obj, "", "\t") if err != nil { return err.Error() } else { return string(b) } } // toggledLogger - a Logger than can be enabled and disabled type toggledLogger struct { // Enable or disable output Enabled bool // Panic after logging a message, useful in regression tests Wpanic bool *log.Logger } func (l *toggledLogger) Printf(format string, v ...interface{}) { if !l.Enabled { return } l.Logger.Printf(format, v...) if l.Wpanic { panic("-wpanic turns warning into panic: " + fmt.Sprintf(format, v...)) } } func (l *toggledLogger) Println(v ...interface{}) { if !l.Enabled { return } l.Logger.Println(v...) if l.Wpanic { panic("-wpanic turns warning into panic: " + fmt.Sprintln(v...)) } } // As defined by http://elinux.org/Debugging_by_printing#Log_Levels // Debug messages var Debug *toggledLogger // Informational message e.g. startup information var Info *toggledLogger // A warning, meaning nothing serious by itself but might indicate problems var Warn *toggledLogger func init() { Debug = &toggledLogger{false, false, log.New(os.Stdout, "", 0)} Info = &toggledLogger{true, false, log.New(os.Stdout, "", 0)} Warn = &toggledLogger{true, false, log.New(os.Stderr, "", 0)} }