Alec Thomas
37 lines
689 B
Go
37 lines
689 B
Go
package kong
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import (
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"text/template"
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)
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const defaultHelp = `{{- with .Application -}}
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usage: {{.Name}}
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{{.Help}}
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{{range .Context.Flags}}
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--{{.Name}}
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{{end}}
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{{- end -}}
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`
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var defaultHelpTemplate = template.Must(template.New("help").Parse(defaultHelp))
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// Help returns a Hook that will display help and exit.
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func Help(tmpl *template.Template, tmplctx map[string]interface{}) HookFunction {
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return func(app *Kong, ctx *Context, trace *Trace) error {
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merged := map[string]interface{}{
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"Application": app.Model,
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}
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for k, v := range tmplctx {
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merged[k] = v
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}
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err := tmpl.Execute(app.Stdout, merged)
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if err != nil {
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return err
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}
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app.Exit(0)
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return nil
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}
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}
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