func (cli *DockerCli) Subcmd(name, signature, description string) *flag.FlagSet {
flags := flag.NewFlagSet(name, flag.ContinueOnError)
flags.Usage = func() {
options := ""
if flags.FlagCountUndeprecated() > 0 {
options = "[OPTIONS] "
}
fmt.Fprintf(cli.err, "\nUsage: docker %s %s%s\n\n%s\n\n", name, options, signature, description)
flags.PrintDefaults()
os.Exit(2)
}
return flags
}
func (cli *DockerCli) Subcmd(name, signature, description string, exitOnError bool) *flag.FlagSet {
var errorHandling flag.ErrorHandling
if exitOnError {
errorHandling = flag.ExitOnError
} else {
errorHandling = flag.ContinueOnError
}
flags := flag.NewFlagSet(name, errorHandling)
flags.Usage = func() {
options := ""
if signature != "" {
signature = " " + signature
}
if flags.FlagCountUndeprecated() > 0 {
options = " [OPTIONS]"
}
fmt.Fprintf(cli.out, "\nUsage: docker %s%s%s\n\n%s\n\n", name, options, signature, description)
flags.SetOutput(cli.out)
flags.PrintDefaults()
os.Exit(0)
}
return flags
}
func parseRun(args []string) (*Config, *HostConfig, *flag.FlagSet, error) {
cmd := flag.NewFlagSet("run", flag.ContinueOnError)
cmd.SetOutput(ioutil.Discard)
cmd.Usage = nil
return Parse(cmd, args)
}