func()

in pkg/genericclioptions/jsonpath_flags.go [62:116]

• 44 lines of code
• 15 McCabe index (conditional complexity)

func (f *JSONPathPrintFlags) ToPrinter(templateFormat string) (printers.ResourcePrinter, error) {
	if (f.TemplateArgument == nil || len(*f.TemplateArgument) == 0) && len(templateFormat) == 0 {
		return nil, NoCompatiblePrinterError{Options: f, OutputFormat: &templateFormat}
	}

	templateValue := ""

	if f.TemplateArgument == nil || len(*f.TemplateArgument) == 0 {
		for format := range jsonFormats {
			format = format + "="
			if strings.HasPrefix(templateFormat, format) {
				templateValue = templateFormat[len(format):]
				templateFormat = format[:len(format)-1]
				break
			}
		}
	} else {
		templateValue = *f.TemplateArgument
	}

	if _, supportedFormat := jsonFormats[templateFormat]; !supportedFormat {
		return nil, NoCompatiblePrinterError{OutputFormat: &templateFormat, AllowedFormats: f.AllowedFormats()}
	}

	if len(templateValue) == 0 {
		return nil, fmt.Errorf("template format specified but no template given")
	}

	if templateFormat == "jsonpath-file" {
		data, err := ioutil.ReadFile(templateValue)
		if err != nil {
			return nil, fmt.Errorf("error reading --template %s, %v", templateValue, err)
		}

		templateValue = string(data)
	}

	p, err := printers.NewJSONPathPrinter(templateValue)
	if err != nil {
		return nil, fmt.Errorf("error parsing jsonpath %s, %v", templateValue, err)
	}

	allowMissingKeys := true
	if f.AllowMissingKeys != nil {
		allowMissingKeys = *f.AllowMissingKeys
	}

	p.AllowMissingKeys(allowMissingKeys)

	if templateFormat == "jsonpath-as-json" {
		p.EnableJSONOutput(true)
	}

	return p, nil
}