Forked the emersion/go-imap v1 project.

imapserver/copy.go

@@ -0,0 +1,55 @@
+package imapserver
+
+import (
+	"github.com/emersion/go-imap/v2"
+	"github.com/emersion/go-imap/v2/internal/imapwire"
+)
+
+func (c *Conn) handleCopy(tag string, dec *imapwire.Decoder, numKind NumKind) error {
+	numSet, dest, err := readCopy(numKind, dec)
+	if err != nil {
+		return err
+	}
+	if err := c.checkState(imap.ConnStateSelected); err != nil {
+		return err
+	}
+	data, err := c.session.Copy(numSet, dest)
+	if err != nil {
+		return err
+	}
+
+	cmdName := "COPY"
+	if numKind == NumKindUID {
+		cmdName = "UID COPY"
+	}
+	if err := c.poll(cmdName); err != nil {
+		return err
+	}
+
+	return c.writeCopyOK(tag, data)
+}
+
+func (c *Conn) writeCopyOK(tag string, data *imap.CopyData) error {
+	enc := newResponseEncoder(c)
+	defer enc.end()
+
+	if tag == "" {
+		tag = "*"
+	}
+
+	enc.Atom(tag).SP().Atom("OK").SP()
+	if data != nil {
+		enc.Special('[')
+		enc.Atom("COPYUID").SP().Number(data.UIDValidity).SP().NumSet(data.SourceUIDs).SP().NumSet(data.DestUIDs)
+		enc.Special(']').SP()
+	}
+	enc.Text("COPY completed")
+	return enc.CRLF()
+}
+
+func readCopy(numKind NumKind, dec *imapwire.Decoder) (numSet imap.NumSet, dest string, err error) {
+	if !dec.ExpectSP() || !dec.ExpectNumSet(numKind.wire(), &numSet) || !dec.ExpectSP() || !dec.ExpectMailbox(&dest) || !dec.ExpectCRLF() {
+		return nil, "", dec.Err()
+	}
+	return numSet, dest, nil
+}