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package templ
import (
"embed"
"html/template"
"sync"
)
//go:embed *.tpl
var fs embed.FS
var templates = make(map[string]*template.Template)
var muTpl sync.RWMutex
var baseTpl *template.Template
func init() {
baseTpl = template.Must(template.ParseFS(fs, "base.tpl"))
}
func Lookup(name string) *template.Template {
muTpl.RLock()
tpl := templates[name]
muTpl.RUnlock()
if tpl == nil {
return parse(name)
}
return tpl
}
func parse(name string) *template.Template {
muTpl.Lock()
defer muTpl.Unlock()
if tpl := templates[name]; tpl != nil {
// might've been created by another goroutine
return tpl
}
b := template.Must(baseTpl.Clone())
t := template.Must(b.ParseFS(fs, name+".tpl"))
templates[name] = t
return t
}
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