// TODO(xiaq): Currently only the editor deals with signals.
func interact() {
ev, st := newEvalerAndStore()
datadir, err := store.EnsureDataDir()
printError(err)
if err == nil {
// XXX
err := ev.Source(datadir + "/rc.elv")
if err != nil && !os.IsNotExist(err) {
printError(err)
}
}
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)
ed := edit.NewEditor(os.Stdin, sigch, ev, st)
for {
cmdNum++
name := fmt.Sprintf("<tty %d>", cmdNum)
prompt := func() string {
return osutil.Getwd() + "> "
}
rprompt := func() string {
return rpromptStr
}
lr := ed.ReadLine(prompt, rprompt)
// signal.Stop(sigch)
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 {
err := ev.Eval(name, lr.Line, n)
printError(err)
}
}
}
func interact(ev *eval.Evaler, st *store.Store) {
// Build Editor.
sigch := make(chan os.Signal)
signal.Notify(sigch)
ed := edit.NewEditor(os.Stdin, sigch, ev, st)
// Source rc.elv.
datadir, err := store.EnsureDataDir()
if err != nil {
fmt.Fprintln(os.Stderr, err)
} else {
source(ev, datadir+"/rc.elv", true)
}
// Build readLine function.
readLine := func() (string, error) {
return ed.ReadLine()
}
cooldown := time.Second
usingBasic := false
cmdNum := 0
for {
cmdNum++
// name := fmt.Sprintf("<tty %d>", cmdNum)
line, err := readLine()
if err == io.EOF {
break
} else if err != nil {
fmt.Println("Editor error:", err)
if !usingBasic {
fmt.Println("Falling back to basic line editor")
readLine = basicReadLine
usingBasic = true
} else {
fmt.Println("Don't know what to do, pid is", os.Getpid())
fmt.Println("Restarting editor in", cooldown)
time.Sleep(cooldown)
if cooldown < time.Minute {
cooldown *= 2
}
}
continue
}
// No error; reset cooldown.
cooldown = time.Second
n, err := parse.Parse(line)
printError(err, "<interact>", "parse error", line)
if err == nil {
err := ev.EvalInteractive(line, n)
printError(err, "<interact>", "eval error", line)
}
}
}
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), st
}
// TODO(xiaq): Currently only the editor deals with signals.
func interact() {
ev, st := newEvalerAndStore()
sigch := make(chan os.Signal, sigchSize)
signal.Notify(sigch)
ed := edit.NewEditor(os.Stdin, sigch, ev, st)
datadir, err := store.EnsureDataDir()
printError(err)
if err == nil {
// XXX
err := ev.Source(datadir + "/rc.elv")
if err != nil && !os.IsNotExist(err) {
printError(err)
}
}
cmdNum := 0
username := "******"
user, err := user.Current()
if err == nil {
username = user.Username
}
hostname, err := os.Hostname()
if err != nil {
hostname = "???"
}
rpromptStr := username + "@" + hostname
prompt := func() string {
return osutil.Getwd() + "> "
}
rprompt := func() string {
return rpromptStr
}
readLine := func() edit.LineRead {
return ed.ReadLine(prompt, rprompt)
}
usingBasic := false
if !sys.IsATTY(0) {
readLine = basicReadLine
usingBasic = true
}
for {
cmdNum++
// name := fmt.Sprintf("<tty %d>", cmdNum)
lr := readLine()
// signal.Stop(sigch)
if lr.EOF {
break
} else if lr.Err != nil {
fmt.Println("Editor error:", lr.Err)
if !usingBasic {
fmt.Println("Falling back to basic line editor")
readLine = basicReadLine
usingBasic = true
}
continue
}
n, err := parse.Parse(lr.Line)
printError(err)
if err == nil {
err := ev.EvalInteractive(lr.Line, n)
printError(err)
}
}
}