Added files.

imapclient/move.go

@@ -0,0 +1,74 @@
+package imapclient
+
+import (
+	"github.com/emersion/go-imap/v2"
+	"github.com/emersion/go-imap/v2/internal/imapwire"
+)
+
+// Move sends a MOVE command.
+//
+// If the server doesn't support IMAP4rev2 nor the MOVE extension, a fallback
+// with COPY + STORE + EXPUNGE commands is used.
+func (c *Client) Move(numSet imap.NumSet, mailbox string) *MoveCommand {
+	// If the server doesn't support MOVE, fallback to [UID] COPY,
+	// [UID] STORE +FLAGS.SILENT \Deleted and [UID] EXPUNGE
+	cmdName := "MOVE"
+	if !c.Caps().Has(imap.CapMove) {
+		cmdName = "COPY"
+	}
+
+	cmd := &MoveCommand{}
+	enc := c.beginCommand(uidCmdName(cmdName, imapwire.NumSetKind(numSet)), cmd)
+	enc.SP().NumSet(numSet).SP().Mailbox(mailbox)
+	enc.end()
+
+	if cmdName == "COPY" {
+		cmd.store = c.Store(numSet, &imap.StoreFlags{
+			Op:     imap.StoreFlagsAdd,
+			Silent: true,
+			Flags:  []imap.Flag{imap.FlagDeleted},
+		}, nil)
+		if uidSet, ok := numSet.(imap.UIDSet); ok && c.Caps().Has(imap.CapUIDPlus) {
+			cmd.expunge = c.UIDExpunge(uidSet)
+		} else {
+			cmd.expunge = c.Expunge()
+		}
+	}
+
+	return cmd
+}
+
+// MoveCommand is a MOVE command.
+type MoveCommand struct {
+	commandBase
+	data MoveData
+
+	// Fallback
+	store   *FetchCommand
+	expunge *ExpungeCommand
+}
+
+func (cmd *MoveCommand) Wait() (*MoveData, error) {
+	if err := cmd.wait(); err != nil {
+		return nil, err
+	}
+	if cmd.store != nil {
+		if err := cmd.store.Close(); err != nil {
+			return nil, err
+		}
+	}
+	if cmd.expunge != nil {
+		if err := cmd.expunge.Close(); err != nil {
+			return nil, err
+		}
+	}
+	return &cmd.data, nil
+}
+
+// MoveData contains the data returned by a MOVE command.
+type MoveData struct {
+	// requires UIDPLUS or IMAP4rev2
+	UIDValidity uint32
+	SourceUIDs  imap.NumSet
+	DestUIDs    imap.NumSet
+}