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package main
import "github.com/integrii/flaggy"
// The custom help message template.
// For rendering text/template will be used: https://godoc.org/text/template
// Object propperties can be looked up here: https://github.com/integrii/flaggy/blob/master/helpValues.go
const helpTemplate = `{{.CommandName}}{{if .Description}} - {{.Description}}{{end}}{{if .PrependMessage}}
{{.PrependMessage}}{{end}}
{{if .UsageString}}
Usage:
{{.UsageString}}{{end}}{{if .Positionals}}
Positional Variables: {{range .Positionals}}
{{.Name}} {{.Spacer}}{{if .Description}} {{.Description}}{{end}}{{if .DefaultValue}} (default: {{.DefaultValue}}){{else}}{{if .Required}} (Required){{end}}{{end}}{{end}}{{end}}{{if .Subcommands}}
Subcommands: {{range .Subcommands}}
{{.LongName}}{{if .ShortName}} ({{.ShortName}}){{end}}{{if .Position}}{{if gt .Position 1}} (position {{.Position}}){{end}}{{end}}{{if .Description}} {{.Spacer}}{{.Description}}{{end}}{{end}}
{{end}}{{if (gt (len .Flags) 0)}}
Flags: {{if .Flags}}{{range .Flags}}
{{if .ShortName}}-{{.ShortName}} {{else}} {{end}}{{if .LongName}}--{{.LongName}}{{end}}{{if .Description}} {{.Spacer}}{{.Description}}{{if .DefaultValue}} (default: {{.DefaultValue}}){{end}}{{end}}{{end}}{{end}}
{{end}}{{if .AppendMessage}}{{.AppendMessage}}
{{end}}{{if .Message}}
{{.Message}}{{end}}
`
func main() {
// Declare variables and their defaults
var stringFlag = "defaultValue"
// Add a flag
flaggy.String(&stringFlag, "f", "flag", "A test string flag")
// Set the help template
flaggy.DefaultParser.SetHelpTemplate(helpTemplate)
// Parse the flag
flaggy.Parse()
}
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