Use new archiver code for backup

internal/ui/message.go

@@ -0,0 +1,45 @@
+package ui
+
+import "github.com/restic/restic/internal/ui/termstatus"
+
+// Message reports progress with messages of different verbosity.
+type Message struct {
+	term *termstatus.Terminal
+	v    uint
+}
+
+// NewMessage returns a message progress reporter with underlying terminal
+// term.
+func NewMessage(term *termstatus.Terminal, verbosity uint) *Message {
+	return &Message{
+		term: term,
+		v:    verbosity,
+	}
+}
+
+// E reports an error
+func (m *Message) E(msg string, args ...interface{}) {
+	m.term.Errorf(msg, args...)
+}
+
+// P prints a message if verbosity >= 1, this is used for normal messages which
+// are not errors.
+func (m *Message) P(msg string, args ...interface{}) {
+	if m.v >= 1 {
+		m.term.Printf(msg, args...)
+	}
+}
+
+// V prints a message if verbosity >= 2, this is used for verbose messages.
+func (m *Message) V(msg string, args ...interface{}) {
+	if m.v >= 2 {
+		m.term.Printf(msg, args...)
+	}
+}
+
+// VV prints a message if verbosity >= 3, this is used for debug messages.
+func (m *Message) VV(msg string, args ...interface{}) {
+	if m.v >= 3 {
+		m.term.Printf(msg, args...)
+	}
+}