// Main is the entry point of elvish.
func Main() {
defer rescue()
flag.Usage = usage
flag.Parse()
args := flag.Args()
if len(args) > 1 {
usage()
os.Exit(2)
}
if *help {
usage()
os.Exit(0)
}
if *log != "" {
err := util.SetOutputFile(*log)
if err != nil {
fmt.Println(err)
}
}
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
Logger.Fatal(err)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
handleHupAndQuit()
logSignals()
ev, st := newEvalerAndStore()
defer func() {
err := st.Close()
if err != nil {
fmt.Println("failed to close database:", err)
}
}()
if len(args) == 1 {
if *cmd {
evalText(ev, "code from -c", args[0])
} else {
script(ev, args[0])
}
} else if !sys.IsATTY(0) {
script(ev, "/dev/stdin")
} else {
interact(ev, st)
}
}
func _log(ec *EvalCtx, fname string) {
maybeThrow(util.SetOutputFile(fname))
}