func newEvalerAndStore() (*eval.Evaler, *store.Store) {
dataDir, err := store.EnsureDataDir()
if err != nil {
fmt.Fprintln(os.Stderr, "Warning: cannot create data dir ~/.elvish")
}
var st *store.Store
if err == nil {
st, err = store.NewStore(dataDir)
if err != nil {
fmt.Fprintln(os.Stderr, "Warning: cannot connect to store:", err)
}
}
return eval.NewEvaler(st, dataDir), st
}
// TODO(xiaq): Currently only the editor deals with signals.
func interact() {
ev, st := newEvalerAndStore()
datadir, err := store.EnsureDataDir()
printError(err)
if err == nil {
// XXX
vs, err := ev.Source(datadir + "/rc.elv")
if err != nil && !os.IsNotExist(err) {
printError(err)
}
eval.PrintExituses(vs)
}
cmdNum := 0
username := "******"
user, err := user.Current()
if err == nil {
username = user.Username
}
hostname, err := os.Hostname()
if err != nil {
hostname = "???"
}
rpromptStr := username + "@" + hostname
sigch := make(chan os.Signal, sigchSize)
signal.Notify(sigch)
defer signal.Stop(sigch)
ed := edit.NewEditor(os.Stdin, sigch, st)
for {
cmdNum++
name := fmt.Sprintf("<tty %d>", cmdNum)
prompt := func() string {
return sysutil.Getwd() + "> "
}
rprompt := func() string {
return rpromptStr
}
lr := ed.ReadLine(prompt, rprompt)
if lr.EOF {
break
} else if lr.Err != nil {
fmt.Println("Editor error:", lr.Err)
fmt.Println("My pid is", os.Getpid())
}
n, err := parse.Parse(name, lr.Line)
printError(err)
if err == nil {
vs, err := ev.Eval(name, lr.Line, ".", n)
printError(err)
eval.PrintExituses(vs)
}
}
}