Add missing IDLE command and response

Author: emersion

commands/idle.go

@@ -0,0 +1,17 @@
+package commands
+
+import (
+	"github.com/emersion/go-imap"
+)
+
+// An IDLE command.
+// Se RFC 2177 section 3.
+type Idle struct{}
+
+func (cmd *Idle) Command() *imap.Command {
+	return &imap.Command{Name: "IDLE"}
+}
+
+func (cmd *Idle) Parse(fields []interface{}) error {
+	return nil
+}

responses/idle.go

@@ -0,0 +1,38 @@
+package responses
+
+import (
+	"github.com/emersion/go-imap"
+)
+
+// An IDLE response.
+type Idle struct {
+	RepliesCh chan []byte
+	Stop      <-chan struct{}
+
+	gotContinuationReq bool
+}
+
+func (r *Idle) Replies() <-chan []byte {
+	return r.RepliesCh
+}
+
+func (r *Idle) stop() {
+	r.RepliesCh <- []byte("DONE\r\n")
+}
+
+func (r *Idle) Handle(resp imap.Resp) error {
+	// Wait for a continuation request
+	if _, ok := resp.(*imap.ContinuationReq); ok && !r.gotContinuationReq {
+		r.gotContinuationReq = true
+
+		// We got a continuation request, wait for r.Stop to be closed
+		go func() {
+			<-r.Stop
+			r.stop()
+		}()
+
+		return nil
+	}
+
+	return ErrUnhandled
+}