func saveMain(g *gocui.Gui, v *gocui.View) error {
f, err := ioutil.TempFile("", "gocui_demo_")
if err != nil {
return err
}
defer f.Close()
p := make([]byte, 5)
v.Rewind()
for {
n, err := v.Read(p)
if n > 0 {
if _, err := f.Write(p[:n]); err != nil {
return err
}
}
if err == io.EOF {
break
}
if err != nil {
return err
}
}
return nil
}