func (command ImplyCommand) addImplication(store *storage.Storage, tagName, impliedTagName string) error {
tag, err := store.Db.TagByName(tagName)
if err != nil {
return fmt.Errorf("could not retrieve tag '%v': %v", tagName, err)
}
if tag == nil {
return fmt.Errorf("no such tag '%v'.", tagName)
}
impliedTag, err := store.Db.TagByName(impliedTagName)
if err != nil {
return fmt.Errorf("could not retrieve tag '%v': %v", impliedTagName, err)
}
if impliedTag == nil {
return fmt.Errorf("no such tag '%v'.", impliedTagName)
}
if command.verbose {
log.Infof("adding tag implication of '%v' to '%v'.", tagName, impliedTagName)
}
if err = store.AddImplication(tag.Id, impliedTag.Id); err != nil {
return fmt.Errorf("could not add tag implication of '%v' to '%v': %v", tagName, impliedTagName, err)
}
return nil
}