commands/eml: open and view eml files

Open and view eml data from a file. Call the eml command and use the
completion feature to select an eml file from disk. The eml data will be
opened in the message viewer.

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 63 insertions, 0 deletions

diff --git a/commands/eml.go b/commands/eml.go
new file mode 100644
index 00000000..a88a13b3
--- /dev/null
+++ b/commands/eml.go
@@ -0,0 +1,63 @@
+package commands
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+
+	"git.sr.ht/~rjarry/aerc/lib"
+	"git.sr.ht/~rjarry/aerc/widgets"
+)
+
+type Eml struct{}
+
+func init() {
+	register(Eml{})
+}
+
+func (Eml) Aliases() []string {
+	return []string{"eml"}
+}
+
+func (Eml) Complete(aerc *widgets.Aerc, args []string) []string {
+	return CompletePath(strings.Join(args, " "))
+}
+
+func (Eml) Execute(aerc *widgets.Aerc, args []string) error {
+	acct := aerc.SelectedAccount()
+	if acct == nil {
+		return fmt.Errorf("no account selected")
+	}
+
+	showEml := func(r io.Reader) {
+		data, err := io.ReadAll(r)
+		if err != nil {
+			aerc.PushError(err.Error())
+			return
+		}
+		lib.NewEmlMessageView(data, aerc.Crypto, aerc.DecryptKeys,
+			func(view lib.MessageView, err error) {
+				if err != nil {
+					aerc.PushError(err.Error())
+					return
+				}
+				msgView := widgets.NewMessageViewer(acct,
+					aerc.Config(), view)
+				aerc.NewTab(msgView,
+					view.MessageInfo().Envelope.Subject)
+			})
+	}
+
+	path := strings.Join(args[1:], " ")
+	if _, err := os.Stat(path); err != nil {
+		return err
+	}
+	f, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	showEml(f)
+	return nil
+}