func record() {
C.ttySave()
defer C.ttyRestore()
C.ttyRaw()
master, slave, err := pty.Open()
if err != nil {
log.Fatalln("open:", err)
}
C.ttyFixWinsz(C.int(slave.Fd()))
script, err := os.OpenFile("ttyrecord", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
log.Fatalln(err)
}
sh := os.Getenv("SHELL")
if sh == "" {
sh = "/bin/sh"
}
attr := &syscall.SysProcAttr{
Setsid: true,
Setctty: true,
Ctty: int(slave.Fd()),
}
shell := &exec.Cmd{
Path: sh,
SysProcAttr: attr,
Stdin: slave,
Stdout: slave,
Stderr: slave,
}
go io.Copy(master, os.Stdin)
go io.Copy(io.MultiWriter(newGobWriter(script), os.Stdout), master)
shell.Run()
}
func replay() {
C.ttySave()
defer C.ttyRestore()
C.ttyRaw()
script, err := os.Open("ttyrecord")
if err != nil {
log.Fatalln(err)
}
var last time.Time
dec := gob.NewDecoder(script)
msg := &message{}
for {
if err := dec.Decode(msg); err != nil {
break
}
if !last.IsZero() {
wait := msg.T.Sub(last)
<-time.After(wait)
}
last = msg.T
os.Stdout.Write(msg.P)
}
}