"github.com/google/pprof/internal/report"
)

var (
	htmlTemplates    *template.Template // Lazily loaded templates
	htmlTemplateInit sync.Once
)

// getHTMLTemplates returns the set of HTML templates used by pprof,
// initializing them if necessary.
func getHTMLTemplates() *template.Template {
	htmlTemplateInit.Do(func() {
		htmlTemplates = template.New("templategroup")
		addTemplates(htmlTemplates)

	profile := getFromLegend(legend, "Type: ", "unknown")
	data.Title = file + " " + profile
	data.Errors = errList
	data.Total = rpt.Total()
	data.Legend = legend
	return getHTMLTemplates().ExecuteTemplate(dst, tmpl, data)
}

// render responds with html generated by passing data to the named template.
func (ui *webInterface) render(w http.ResponseWriter, req *http.Request, tmpl string,