func ExampleContext_RegisterCommand() {
context := cmd.NewContext(
"A tree where we can register commands",
`This is the root of the command tree and is where
we put all commands and subgroups`)
sampleCmd := &cmd.Command{
Brief: "A command",
Body: func(*cmd.Context, *cmd.Command, []string) error {
return nil
},
}
context.RegisterCommand([]string{"init"}, sampleCmd)
}
var flagRoot string
var flagLevel int
var brief = "Utility for managing a stable of MySQL servers"
var description = `Easy creation and distribution of MySQL
servers. The utility support running different versions of servers at
the same time.
To create a new stable, use 'init'.
To add a distribution, use 'distribution add'.
To get help on a command, use the 'help <command>'.`
var context *cmd.Context = cmd.NewContext(brief, description)
func main() {
flag.Parse()
if args := flag.Args(); len(args) == 0 {
flag.Usage()
os.Exit(2)
} else {
prog := filepath.Base(os.Args[0])
context.RootDir = flagRoot
log.SetPriority(log.Priority(flagLevel))
if err := context.RunCommand(args); err != nil {
fmt.Fprintf(os.Stderr, "%s: %s\n", prog, err)
os.Exit(2)