You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
808 B
47 lines
808 B
package cli
|
|
|
|
import "os"
|
|
import "text/tabwriter"
|
|
import "text/template"
|
|
|
|
type HelpData struct {
|
|
Name string
|
|
Usage string
|
|
Commands []Command
|
|
Version string
|
|
}
|
|
|
|
var HelpCommand = Command{
|
|
Name: "help",
|
|
ShortName: "h",
|
|
Usage: "View help topics",
|
|
Action: ShowHelp,
|
|
}
|
|
|
|
var ShowHelp = func(name string) {
|
|
helpTemplate := `NAME:
|
|
{{.Name}} - {{.Usage}}
|
|
|
|
USAGE:
|
|
{{.Name}} [global options] command [command options] [arguments...]
|
|
|
|
VERSION:
|
|
{{.Version}}
|
|
|
|
COMMANDS:
|
|
{{range .Commands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
|
|
{{end}}
|
|
`
|
|
data := HelpData{
|
|
Name,
|
|
Usage,
|
|
Commands,
|
|
Version,
|
|
}
|
|
|
|
w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
|
|
t := template.Must(template.New("help").Parse(helpTemplate))
|
|
t.Execute(w, data)
|
|
w.Flush()
|
|
}
|