| package client |
| |
| import ( |
| "fmt" |
| |
| flag "github.com/docker/docker/pkg/mflag" |
| ) |
| |
| // CmdHelp displays information on a Docker command. |
| // |
| // If more than one command is specified, information is only shown for the first command. |
| // |
| // Usage: docker help COMMAND or docker COMMAND --help |
| func (cli *DockerCli) CmdHelp(args ...string) error { |
| if len(args) > 1 { |
| method, exists := cli.getMethod(args[:2]...) |
| if exists { |
| method("--help") |
| return nil |
| } |
| } |
| if len(args) > 0 { |
| method, exists := cli.getMethod(args[0]) |
| if !exists { |
| return fmt.Errorf("docker: '%s' is not a docker command. See 'docker --help'.", args[0]) |
| } |
| method("--help") |
| return nil |
| } |
| |
| flag.Usage() |
| |
| return nil |
| } |