func main() {
if len(os.Args) < 2 {
showHelp()
os.Exit(1)
}
if !someutils.Exists(os.Args[1]) {
showHelp()
os.Exit(1)
}
err := someutils.Call(os.Args[1], os.Args[1:])
if err != nil {
fmt.Printf("Error: %v\n", err)
os.Exit(1)
}
}
func main() {
some.Init() //ensure the utils are registered.
if len(os.Args) < 2 {
showHelp(" No command specified.")
os.Exit(1)
}
if !someutils.Exists(os.Args[1]) {
showHelp(" Command does not exist.")
os.Exit(1)
}
err, code := someutils.Call(os.Args[1], os.Args[1:])
if err != nil {
if code != 0 {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(code)
}
}
}
// ParseFlags parses flags from a commandline []string
func (xargs *SomeXargs) ParseFlags(call []string, errPipe io.Writer) (error, int) {
flagSet := uggo.NewFlagSetDefault("xargs", "[options] [args...]", someutils.VERSION)
flagSet.SetOutput(errPipe)
// TODO multiple processes at once ?
flagSet.AliasedIntVar(&xargs.maxProcesses, []string{"P", "max-procs"}, 1, "Maximum processes")
err, code := flagSet.ParsePlus(call[1:])
if err != nil {
return err, code
}
args := flagSet.Args()
if len(args) < 1 {
return errors.New("No command specified"), 1
}
if !someutils.Exists(args[0]) {
return errors.New("Command does not exist."), 1
}
xargs.utilFactory = someutils.GetCliPipableFactory(args[0])
xargs.utilArgs = args
return nil, 0
}