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maildir: watch for external changes 

When a maildir is synchronized by an external process while aerc is
running (e.g. mbsync), some emails may be moved out of "new" to "cur" or
completely deleted.

These deletions are ignored and aerc may assume these messages are still
here, leading to errors.

Take file deletions into account. Also, add "cur" to the watched
folders since these can be modified as well.

Signed-off-by: Robin Jarry <robin@jarry.cc>
This commit is contained in:
Robin Jarry 2021-12-06 20:42:07 +01:00
parent f776fb8246
commit f4d3c8fc77
1 changed files with 12 additions and 4 deletions
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16
worker/maildir/worker.go
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@ -71,8 +71,8 @@ func (w *Worker) handleAction(action types.WorkerMessage) {
}
func (w *Worker) handleFSEvent(ev fsnotify.Event) {
// we only care about files being created
if ev.Op != fsnotify.Create {
// we only care about files being created or removed
if ev.Op != fsnotify.Create && ev.Op != fsnotify.Remove {
return
}
// if there's not a selected directory to rescan, ignore
@ -275,22 +275,30 @@ func (w *Worker) handleOpenDirectory(msg *types.OpenDirectory) error {
return err
}
// remove existing watch path
// remove existing watch paths
if w.selected != nil {
prevDir := filepath.Join(string(*w.selected), "new")
if err := w.watcher.Remove(prevDir); err != nil {
return fmt.Errorf("could not unwatch previous directory: %v", err)
}
prevDir = filepath.Join(string(*w.selected), "cur")
if err := w.watcher.Remove(prevDir); err != nil {
return fmt.Errorf("could not unwatch previous directory: %v", err)
}
}
w.selected = &dir
w.selectedName = msg.Directory
// add watch path
// add watch paths
newDir := filepath.Join(string(*w.selected), "new")
if err := w.watcher.Add(newDir); err != nil {
return fmt.Errorf("could not add watch to directory: %v", err)
}
newDir = filepath.Join(string(*w.selected), "cur")
if err := w.watcher.Add(newDir); err != nil {
return fmt.Errorf("could not add watch to directory: %v", err)
}
if err := dir.Clean(); err != nil {
return fmt.Errorf("could not clean directory: %v", err)