restic/internal/ui/progress/printer.go

31 lines
802 B
Go
Raw Normal View History

package progress
// A Printer can can return a new counter or print messages
// at different log levels.
// It must be safe to call its methods from concurrent goroutines.
type Printer interface {
NewCounter(description string) *Counter
E(msg string, args ...interface{})
P(msg string, args ...interface{})
V(msg string, args ...interface{})
VV(msg string, args ...interface{})
}
// NoopPrinter discards all messages
type NoopPrinter struct{}
var _ Printer = (*NoopPrinter)(nil)
func (*NoopPrinter) NewCounter(description string) *Counter {
return nil
}
func (*NoopPrinter) E(msg string, args ...interface{}) {}
func (*NoopPrinter) P(msg string, args ...interface{}) {}
func (*NoopPrinter) V(msg string, args ...interface{}) {}
func (*NoopPrinter) VV(msg string, args ...interface{}) {}